xserver mesa git update 17 nov 2011

15 files changed, 2975 insertions, 2638 deletions

diff --git a/mesalib/src/mesa/main/ffvertex_prog.c b/mesalib/src/mesa/main/ffvertex_prog.c
index 846907842..2c937386a 100644
--- a/mesalib/src/mesa/main/ffvertex_prog.c
+++ b/mesalib/src/mesa/main/ffvertex_prog.c
@@ -949,7 +949,7 @@ static struct ureg calculate_light_attenuation( struct tnl_program *p,
 {
    struct ureg attenuation = register_param3(p, STATE_LIGHT, i,
 					     STATE_ATTENUATION);
-   struct ureg att = get_temp(p);
+   struct ureg att = undef;
 
    /* Calculate spot attenuation:
     */
@@ -959,6 +959,8 @@ static struct ureg calculate_light_attenuation( struct tnl_program *p,
       struct ureg spot = get_temp(p);
       struct ureg slt = get_temp(p);
 
+      att = get_temp(p);
+
       emit_op2(p, OPCODE_DP3, spot, 0, negate(VPpli), spot_dir_norm);
       emit_op2(p, OPCODE_SLT, slt, 0, swizzle1(spot_dir_norm,W), spot);
       emit_op2(p, OPCODE_POW, spot, 0, spot, swizzle1(attenuation, W));
@@ -968,9 +970,13 @@ static struct ureg calculate_light_attenuation( struct tnl_program *p,
       release_temp(p, slt);
    }
 
-   /* Calculate distance attenuation:
+   /* Calculate distance attenuation(See formula (2.4) at glspec 2.1 page 62):
+    *
+    * Skip the calucation when _dist_ is undefined(light_eyepos3_is_zero)
     */
-   if (p->state->unit[i].light_attenuated) {
+   if (p->state->unit[i].light_attenuated && !is_undef(dist)) {
+      if (is_undef(att))
+         att = get_temp(p);
       /* 1/d,d,d,1/d */
       emit_op1(p, OPCODE_RCP, dist, WRITEMASK_YZ, dist);
       /* 1,d,d*d,1/d */
@@ -1113,73 +1119,54 @@ static void build_lighting( struct tnl_program *p )
       if (p->state->unit[i].light_enabled) {
 	 struct ureg half = undef;
 	 struct ureg att = undef, VPpli = undef;
+	 struct ureg dist = undef;
 
 	 count++;
+         if (p->state->unit[i].light_eyepos3_is_zero) {
+             VPpli = register_param3(p, STATE_INTERNAL,
+                                     STATE_LIGHT_POSITION_NORMALIZED, i);
+         } else {
+            struct ureg Ppli = register_param3(p, STATE_INTERNAL,
+                                               STATE_LIGHT_POSITION, i);
+            struct ureg V = get_eye_position(p);
+
+            VPpli = get_temp(p);
+            dist = get_temp(p);
+
+            /* Calculate VPpli vector
+             */
+            emit_op2(p, OPCODE_SUB, VPpli, 0, Ppli, V);
 
-	 if (p->state->unit[i].light_eyepos3_is_zero) {
-	    /* Can used precomputed constants in this case.
-	     * Attenuation never applies to infinite lights.
-	     */
-	    VPpli = register_param3(p, STATE_INTERNAL,
-				    STATE_LIGHT_POSITION_NORMALIZED, i);
-
-            if (!p->state->material_shininess_is_zero) {
-               if (p->state->light_local_viewer) {
-                  struct ureg eye_hat = get_eye_position_normalized(p);
-                  half = get_temp(p);
-                  emit_op2(p, OPCODE_SUB, half, 0, VPpli, eye_hat);
-                  emit_normalize_vec3(p, half, half);
-               }
-               else {
-                  half = register_param3(p, STATE_INTERNAL,
-                                         STATE_LIGHT_HALF_VECTOR, i);
-               }
-            }
-	 }
-	 else {
-	    struct ureg Ppli = register_param3(p, STATE_INTERNAL,
-					       STATE_LIGHT_POSITION, i);
-	    struct ureg V = get_eye_position(p);
-	    struct ureg dist = get_temp(p);
-
-	    VPpli = get_temp(p);
-
-	    /* Calculate VPpli vector
-	     */
-	    emit_op2(p, OPCODE_SUB, VPpli, 0, Ppli, V);
-
-	    /* Normalize VPpli.  The dist value also used in
-	     * attenuation below.
-	     */
-	    emit_op2(p, OPCODE_DP3, dist, 0, VPpli, VPpli);
-	    emit_op1(p, OPCODE_RSQ, dist, 0, dist);
-	    emit_op2(p, OPCODE_MUL, VPpli, 0, VPpli, dist);
-
-	    /* Calculate attenuation:
-	     */
-	    if (!p->state->unit[i].light_spotcutoff_is_180 ||
-		p->state->unit[i].light_attenuated) {
-	       att = calculate_light_attenuation(p, i, VPpli, dist);
-	    }
-
-	    /* Calculate viewer direction, or use infinite viewer:
-	     */
-            if (!p->state->material_shininess_is_zero) {
-               half = get_temp(p);
+            /* Normalize VPpli.  The dist value also used in
+             * attenuation below.
+             */
+            emit_op2(p, OPCODE_DP3, dist, 0, VPpli, VPpli);
+            emit_op1(p, OPCODE_RSQ, dist, 0, dist);
+            emit_op2(p, OPCODE_MUL, VPpli, 0, VPpli, dist);
+         }
 
-               if (p->state->light_local_viewer) {
-                  struct ureg eye_hat = get_eye_position_normalized(p);
-                  emit_op2(p, OPCODE_SUB, half, 0, VPpli, eye_hat);
-               }
-               else {
-                  struct ureg z_dir = swizzle(get_identity_param(p),X,Y,W,Z);
-                  emit_op2(p, OPCODE_ADD, half, 0, VPpli, z_dir);
-               }
+         /* Calculate attenuation:
+          */
+         att = calculate_light_attenuation(p, i, VPpli, dist);
+         release_temp(p, dist);
 
+	 /* Calculate viewer direction, or use infinite viewer:
+	  */
+         if (!p->state->material_shininess_is_zero) {
+            if (p->state->light_local_viewer) {
+               struct ureg eye_hat = get_eye_position_normalized(p);
+               half = get_temp(p);
+               emit_op2(p, OPCODE_SUB, half, 0, VPpli, eye_hat);
+               emit_normalize_vec3(p, half, half);
+            } else if (p->state->unit[i].light_eyepos3_is_zero) {
+               half = register_param3(p, STATE_INTERNAL,
+                                      STATE_LIGHT_HALF_VECTOR, i);
+            } else {
+               struct ureg z_dir = swizzle(get_identity_param(p),X,Y,W,Z);
+               half = get_temp(p);
+               emit_op2(p, OPCODE_ADD, half, 0, VPpli, z_dir);
                emit_normalize_vec3(p, half, half);
             }
-
-	    release_temp(p, dist);
 	 }
 
 	 /* Calculate dot products:
diff --git a/mesalib/src/mesa/main/format_unpack.c b/mesalib/src/mesa/main/format_unpack.c
index 525bbcb1c..6e2ce7a05 100644
--- a/mesalib/src/mesa/main/format_unpack.c
+++ b/mesalib/src/mesa/main/format_unpack.c
@@ -57,1049 +57,1335 @@ nonlinear_to_linear(GLubyte cs8)
 }
 
 
-typedef void (*unpack_rgba_func)(const void *src, GLfloat dst[4]);
+typedef void (*unpack_rgba_func)(const void *src, GLfloat dst[][4], GLuint n);
 
 
 static void
-unpack_RGBA8888(const void *src, GLfloat dst[4])
+unpack_RGBA8888(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLuint s = *((const GLuint *) src);
-   dst[RCOMP] = UBYTE_TO_FLOAT( (s >> 24)        );
-   dst[GCOMP] = UBYTE_TO_FLOAT( (s >> 16) & 0xff );
-   dst[BCOMP] = UBYTE_TO_FLOAT( (s >>  8) & 0xff );
-   dst[ACOMP] = UBYTE_TO_FLOAT( (s      ) & 0xff );
+   const GLuint *s = ((const GLuint *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = UBYTE_TO_FLOAT( (s[i] >> 24)        );
+      dst[i][GCOMP] = UBYTE_TO_FLOAT( (s[i] >> 16) & 0xff );
+      dst[i][BCOMP] = UBYTE_TO_FLOAT( (s[i] >>  8) & 0xff );
+      dst[i][ACOMP] = UBYTE_TO_FLOAT( (s[i]      ) & 0xff );
+   }
 }
 
 static void
-unpack_RGBA8888_REV(const void *src, GLfloat dst[4])
+unpack_RGBA8888_REV(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLuint s = *((const GLuint *) src);
-   dst[RCOMP] = UBYTE_TO_FLOAT( (s      ) & 0xff );
-   dst[GCOMP] = UBYTE_TO_FLOAT( (s >>  8) & 0xff );
-   dst[BCOMP] = UBYTE_TO_FLOAT( (s >> 16) & 0xff );
-   dst[ACOMP] = UBYTE_TO_FLOAT( (s >> 24)        );
+   const GLuint *s = ((const GLuint *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = UBYTE_TO_FLOAT( (s[i]      ) & 0xff );
+      dst[i][GCOMP] = UBYTE_TO_FLOAT( (s[i] >>  8) & 0xff );
+      dst[i][BCOMP] = UBYTE_TO_FLOAT( (s[i] >> 16) & 0xff );
+      dst[i][ACOMP] = UBYTE_TO_FLOAT( (s[i] >> 24)        );
+   }
 }
 
 static void
-unpack_ARGB8888(const void *src, GLfloat dst[4])
+unpack_ARGB8888(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLuint s = *((const GLuint *) src);
-   dst[RCOMP] = UBYTE_TO_FLOAT( (s >> 16) & 0xff );
-   dst[GCOMP] = UBYTE_TO_FLOAT( (s >>  8) & 0xff );
-   dst[BCOMP] = UBYTE_TO_FLOAT( (s      ) & 0xff );
-   dst[ACOMP] = UBYTE_TO_FLOAT( (s >> 24)        );
+   const GLuint *s = ((const GLuint *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = UBYTE_TO_FLOAT( (s[i] >> 16) & 0xff );
+      dst[i][GCOMP] = UBYTE_TO_FLOAT( (s[i] >>  8) & 0xff );
+      dst[i][BCOMP] = UBYTE_TO_FLOAT( (s[i]      ) & 0xff );
+      dst[i][ACOMP] = UBYTE_TO_FLOAT( (s[i] >> 24)        );
+   }
 }
 
 static void
-unpack_ARGB8888_REV(const void *src, GLfloat dst[4])
+unpack_ARGB8888_REV(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLuint s = *((const GLuint *) src);
-   dst[RCOMP] = UBYTE_TO_FLOAT( (s >>  8) & 0xff );
-   dst[GCOMP] = UBYTE_TO_FLOAT( (s >> 16) & 0xff );
-   dst[BCOMP] = UBYTE_TO_FLOAT( (s >> 24)        );
-   dst[ACOMP] = UBYTE_TO_FLOAT( (s      ) & 0xff );
+   const GLuint *s = ((const GLuint *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = UBYTE_TO_FLOAT( (s[i] >>  8) & 0xff );
+      dst[i][GCOMP] = UBYTE_TO_FLOAT( (s[i] >> 16) & 0xff );
+      dst[i][BCOMP] = UBYTE_TO_FLOAT( (s[i] >> 24)        );
+      dst[i][ACOMP] = UBYTE_TO_FLOAT( (s[i]      ) & 0xff );
+   }
 }
 
 static void
-unpack_XRGB8888(const void *src, GLfloat dst[4])
+unpack_XRGB8888(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLuint s = *((const GLuint *) src);
-   dst[RCOMP] = UBYTE_TO_FLOAT( (s >> 16) & 0xff );
-   dst[GCOMP] = UBYTE_TO_FLOAT( (s >>  8) & 0xff );
-   dst[BCOMP] = UBYTE_TO_FLOAT( (s      ) & 0xff );
-   dst[ACOMP] = 1.0f;
+   const GLuint *s = ((const GLuint *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = UBYTE_TO_FLOAT( (s[i] >> 16) & 0xff );
+      dst[i][GCOMP] = UBYTE_TO_FLOAT( (s[i] >>  8) & 0xff );
+      dst[i][BCOMP] = UBYTE_TO_FLOAT( (s[i]      ) & 0xff );
+      dst[i][ACOMP] = 1.0f;
+   }
 }
 
 static void
-unpack_XRGB8888_REV(const void *src, GLfloat dst[4])
+unpack_XRGB8888_REV(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLuint s = *((const GLuint *) src);
-   dst[RCOMP] = UBYTE_TO_FLOAT( (s >>  8) & 0xff );
-   dst[GCOMP] = UBYTE_TO_FLOAT( (s >> 16) & 0xff );
-   dst[BCOMP] = UBYTE_TO_FLOAT( (s >> 24)        );
-   dst[ACOMP] = 1.0f;
+   const GLuint *s = ((const GLuint *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = UBYTE_TO_FLOAT( (s[i] >>  8) & 0xff );
+      dst[i][GCOMP] = UBYTE_TO_FLOAT( (s[i] >> 16) & 0xff );
+      dst[i][BCOMP] = UBYTE_TO_FLOAT( (s[i] >> 24)        );
+      dst[i][ACOMP] = 1.0f;
+   }
 }
 
 static void
-unpack_RGB888(const void *src, GLfloat dst[4])
+unpack_RGB888(const void *src, GLfloat dst[][4], GLuint n)
 {
    const GLubyte *s = (const GLubyte *) src;
-   dst[RCOMP] = UBYTE_TO_FLOAT( s[2] );
-   dst[GCOMP] = UBYTE_TO_FLOAT( s[1] );
-   dst[BCOMP] = UBYTE_TO_FLOAT( s[0] );
-   dst[ACOMP] = 1.0F;
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = UBYTE_TO_FLOAT( s[i*3+2] );
+      dst[i][GCOMP] = UBYTE_TO_FLOAT( s[i*3+1] );
+      dst[i][BCOMP] = UBYTE_TO_FLOAT( s[i*3+0] );
+      dst[i][ACOMP] = 1.0F;
+   }
 }
 
 static void
-unpack_BGR888(const void *src, GLfloat dst[4])
+unpack_BGR888(const void *src, GLfloat dst[][4], GLuint n)
 {
    const GLubyte *s = (const GLubyte *) src;
-   dst[RCOMP] = UBYTE_TO_FLOAT( s[0] );
-   dst[GCOMP] = UBYTE_TO_FLOAT( s[1] );
-   dst[BCOMP] = UBYTE_TO_FLOAT( s[2] );
-   dst[ACOMP] = 1.0F;
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = UBYTE_TO_FLOAT( s[i*3+0] );
+      dst[i][GCOMP] = UBYTE_TO_FLOAT( s[i*3+1] );
+      dst[i][BCOMP] = UBYTE_TO_FLOAT( s[i*3+2] );
+      dst[i][ACOMP] = 1.0F;
+   }
 }
 
 static void
-unpack_RGB565(const void *src, GLfloat dst[4])
+unpack_RGB565(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLushort s = *((const GLushort *) src);
-   dst[RCOMP] = ((s >> 11) & 0x1f) * (1.0F / 31.0F);
-   dst[GCOMP] = ((s >> 5 ) & 0x3f) * (1.0F / 63.0F);
-   dst[BCOMP] = ((s      ) & 0x1f) * (1.0F / 31.0F);
-   dst[ACOMP] = 1.0F;
+   const GLushort *s = ((const GLushort *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = ((s[i] >> 11) & 0x1f) * (1.0F / 31.0F);
+      dst[i][GCOMP] = ((s[i] >> 5 ) & 0x3f) * (1.0F / 63.0F);
+      dst[i][BCOMP] = ((s[i]      ) & 0x1f) * (1.0F / 31.0F);
+      dst[i][ACOMP] = 1.0F;
+   }
 }
 
 static void
-unpack_RGB565_REV(const void *src, GLfloat dst[4])
+unpack_RGB565_REV(const void *src, GLfloat dst[][4], GLuint n)
 {
-   GLushort s = *((const GLushort *) src);
-   s = (s >> 8) | (s << 8); /* byte swap */
-   dst[RCOMP] = UBYTE_TO_FLOAT( ((s >> 8) & 0xf8) | ((s >> 13) & 0x7) );
-   dst[GCOMP] = UBYTE_TO_FLOAT( ((s >> 3) & 0xfc) | ((s >>  9) & 0x3) );
-   dst[BCOMP] = UBYTE_TO_FLOAT( ((s << 3) & 0xf8) | ((s >>  2) & 0x7) );
-   dst[ACOMP] = 1.0F;
+   const GLushort *s = ((const GLushort *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      GLuint t = (s[i] >> 8) | (s[i] << 8); /* byte swap */
+      dst[i][RCOMP] = UBYTE_TO_FLOAT( ((t >> 8) & 0xf8) | ((t >> 13) & 0x7) );
+      dst[i][GCOMP] = UBYTE_TO_FLOAT( ((t >> 3) & 0xfc) | ((t >>  9) & 0x3) );
+      dst[i][BCOMP] = UBYTE_TO_FLOAT( ((t << 3) & 0xf8) | ((t >>  2) & 0x7) );
+      dst[i][ACOMP] = 1.0F;
+   }
 }
 
 static void
-unpack_ARGB4444(const void *src, GLfloat dst[4])
+unpack_ARGB4444(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLushort s = *((const GLushort *) src);
-   dst[RCOMP] = ((s >>  8) & 0xf) * (1.0F / 15.0F);
-   dst[GCOMP] = ((s >>  4) & 0xf) * (1.0F / 15.0F);
-   dst[BCOMP] = ((s      ) & 0xf) * (1.0F / 15.0F);
-   dst[ACOMP] = ((s >> 12) & 0xf) * (1.0F / 15.0F);
+   const GLushort *s = ((const GLushort *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = ((s[i] >>  8) & 0xf) * (1.0F / 15.0F);
+      dst[i][GCOMP] = ((s[i] >>  4) & 0xf) * (1.0F / 15.0F);
+      dst[i][BCOMP] = ((s[i]      ) & 0xf) * (1.0F / 15.0F);
+      dst[i][ACOMP] = ((s[i] >> 12) & 0xf) * (1.0F / 15.0F);
+   }
 }
 
 static void
-unpack_ARGB4444_REV(const void *src, GLfloat dst[4])
+unpack_ARGB4444_REV(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLushort s = *((const GLushort *) src);
-   dst[RCOMP] = ((s      ) & 0xf) * (1.0F / 15.0F);
-   dst[GCOMP] = ((s >> 12) & 0xf) * (1.0F / 15.0F);
-   dst[BCOMP] = ((s >>  8) & 0xf) * (1.0F / 15.0F);
-   dst[ACOMP] = ((s >>  4) & 0xf) * (1.0F / 15.0F);
+   const GLushort *s = ((const GLushort *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = ((s[i]      ) & 0xf) * (1.0F / 15.0F);
+      dst[i][GCOMP] = ((s[i] >> 12) & 0xf) * (1.0F / 15.0F);
+      dst[i][BCOMP] = ((s[i] >>  8) & 0xf) * (1.0F / 15.0F);
+      dst[i][ACOMP] = ((s[i] >>  4) & 0xf) * (1.0F / 15.0F);
+   }
 }
 
 static void
-unpack_RGBA5551(const void *src, GLfloat dst[4])
+unpack_RGBA5551(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLushort s = *((const GLushort *) src);
-   dst[RCOMP] = ((s >> 11) & 0x1f) * (1.0F / 31.0F);
-   dst[GCOMP] = ((s >>  6) & 0x1f) * (1.0F / 31.0F);
-   dst[BCOMP] = ((s >>  1) & 0x1f) * (1.0F / 31.0F);
-   dst[ACOMP] = ((s      ) & 0x01) * 1.0F;
+   const GLushort *s = ((const GLushort *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = ((s[i] >> 11) & 0x1f) * (1.0F / 31.0F);
+      dst[i][GCOMP] = ((s[i] >>  6) & 0x1f) * (1.0F / 31.0F);
+      dst[i][BCOMP] = ((s[i] >>  1) & 0x1f) * (1.0F / 31.0F);
+      dst[i][ACOMP] = ((s[i]      ) & 0x01) * 1.0F;
+   }
 }
 
 static void
-unpack_ARGB1555(const void *src, GLfloat dst[4])
+unpack_ARGB1555(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLushort s = *((const GLushort *) src);
-   dst[RCOMP] = ((s >> 10) & 0x1f) * (1.0F / 31.0F);
-   dst[GCOMP] = ((s >>  5) & 0x1f) * (1.0F / 31.0F);
-   dst[BCOMP] = ((s >>  0) & 0x1f) * (1.0F / 31.0F);
-   dst[ACOMP] = ((s >> 15) & 0x01) * 1.0F;
+   const GLushort *s = ((const GLushort *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = ((s[i] >> 10) & 0x1f) * (1.0F / 31.0F);
+      dst[i][GCOMP] = ((s[i] >>  5) & 0x1f) * (1.0F / 31.0F);
+      dst[i][BCOMP] = ((s[i] >>  0) & 0x1f) * (1.0F / 31.0F);
+      dst[i][ACOMP] = ((s[i] >> 15) & 0x01) * 1.0F;
+   }
 }
 
 static void
-unpack_ARGB1555_REV(const void *src, GLfloat dst[4])
+unpack_ARGB1555_REV(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLushort s = *((const GLushort *) src);
-   dst[RCOMP] = UBYTE_TO_FLOAT( ((s >>  7) & 0xf8) | ((s >> 12) & 0x7) );
-   dst[GCOMP] = UBYTE_TO_FLOAT( ((s >>  2) & 0xf8) | ((s >>  7) & 0x7) );
-   dst[BCOMP] = UBYTE_TO_FLOAT( ((s <<  3) & 0xf8) | ((s >>  2) & 0x7) );
-   dst[ACOMP] = UBYTE_TO_FLOAT( ((s >> 15) & 0x01) * 255 );
+   const GLushort *s = ((const GLushort *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = UBYTE_TO_FLOAT( ((s[i] >>  7) & 0xf8) | ((s[i] >> 12) & 0x7) );
+      dst[i][GCOMP] = UBYTE_TO_FLOAT( ((s[i] >>  2) & 0xf8) | ((s[i] >>  7) & 0x7) );
+      dst[i][BCOMP] = UBYTE_TO_FLOAT( ((s[i] <<  3) & 0xf8) | ((s[i] >>  2) & 0x7) );
+      dst[i][ACOMP] = UBYTE_TO_FLOAT( ((s[i] >> 15) & 0x01) * 255 );
+   }
 }
 
 static void
-unpack_AL44(const void *src, GLfloat dst[4])
+unpack_AL44(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLubyte s = *((const GLubyte *) src);
-   dst[RCOMP] =
-   dst[GCOMP] =
-   dst[BCOMP] = (s & 0xf) * (1.0F / 15.0F);
-   dst[ACOMP] = ((s >> 4) & 0xf) * (1.0F / 15.0F);
+   const GLubyte *s = ((const GLubyte *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] =
+      dst[i][GCOMP] =
+      dst[i][BCOMP] = (s[i] & 0xf) * (1.0F / 15.0F);
+      dst[i][ACOMP] = ((s[i] >> 4) & 0xf) * (1.0F / 15.0F);
+   }
 }
 
 static void
-unpack_AL88(const void *src, GLfloat dst[4])
+unpack_AL88(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLushort s = *((const GLushort *) src);
-   dst[RCOMP] = 
-   dst[GCOMP] = 
-   dst[BCOMP] = UBYTE_TO_FLOAT( s & 0xff );
-   dst[ACOMP] = UBYTE_TO_FLOAT( s >> 8 );
+   const GLushort *s = ((const GLushort *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = 
+      dst[i][GCOMP] = 
+      dst[i][BCOMP] = UBYTE_TO_FLOAT( s[i] & 0xff );
+      dst[i][ACOMP] = UBYTE_TO_FLOAT( s[i] >> 8 );
+   }
 }
 
 static void
-unpack_AL88_REV(const void *src, GLfloat dst[4])
+unpack_AL88_REV(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLushort s = *((const GLushort *) src);
-   dst[RCOMP] = 
-   dst[GCOMP] = 
-   dst[BCOMP] = UBYTE_TO_FLOAT( s >> 8 );
-   dst[ACOMP] = UBYTE_TO_FLOAT( s & 0xff );
+   const GLushort *s = ((const GLushort *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = 
+      dst[i][GCOMP] = 
+      dst[i][BCOMP] = UBYTE_TO_FLOAT( s[i] >> 8 );
+      dst[i][ACOMP] = UBYTE_TO_FLOAT( s[i] & 0xff );
+   }
 }
 
 static void
-unpack_AL1616(const void *src, GLfloat dst[4])
+unpack_AL1616(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLuint s = *((const GLuint *) src);
-   dst[RCOMP] =
-   dst[GCOMP] =
-   dst[BCOMP] = USHORT_TO_FLOAT( s & 0xffff );
-   dst[ACOMP] = USHORT_TO_FLOAT( s >> 16 );
+   const GLuint *s = ((const GLuint *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] =
+      dst[i][GCOMP] =
+      dst[i][BCOMP] = USHORT_TO_FLOAT( s[i] & 0xffff );
+      dst[i][ACOMP] = USHORT_TO_FLOAT( s[i] >> 16 );
+   }
 }
 
 static void
-unpack_AL1616_REV(const void *src, GLfloat dst[4])
+unpack_AL1616_REV(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLuint s = *((const GLuint *) src);
-   dst[RCOMP] =
-   dst[GCOMP] =
-   dst[BCOMP] = USHORT_TO_FLOAT( s >> 16 );
-   dst[ACOMP] = USHORT_TO_FLOAT( s & 0xffff );
+   const GLuint *s = ((const GLuint *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] =
+      dst[i][GCOMP] =
+      dst[i][BCOMP] = USHORT_TO_FLOAT( s[i] >> 16 );
+      dst[i][ACOMP] = USHORT_TO_FLOAT( s[i] & 0xffff );
+   }
 }
 
 static void
-unpack_RGB332(const void *src, GLfloat dst[4])
+unpack_RGB332(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLubyte s = *((const GLubyte *) src);
-   dst[RCOMP] = ((s >> 5) & 0x7) * (1.0F / 7.0F);
-   dst[GCOMP] = ((s >> 2) & 0x7) * (1.0F / 7.0F);
-   dst[BCOMP] = ((s     ) & 0x3) * (1.0F / 3.0F);
-   dst[ACOMP] = 1.0F;
+   const GLubyte *s = ((const GLubyte *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = ((s[i] >> 5) & 0x7) * (1.0F / 7.0F);
+      dst[i][GCOMP] = ((s[i] >> 2) & 0x7) * (1.0F / 7.0F);
+      dst[i][BCOMP] = ((s[i]     ) & 0x3) * (1.0F / 3.0F);
+      dst[i][ACOMP] = 1.0F;
+   }
 }
 
 
 static void
-unpack_A8(const void *src, GLfloat dst[4])
+unpack_A8(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLubyte s = *((const GLubyte *) src);
-   dst[RCOMP] =
-   dst[GCOMP] =
-   dst[BCOMP] = 0.0F;
-   dst[ACOMP] = UBYTE_TO_FLOAT(s);
+   const GLubyte *s = ((const GLubyte *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] =
+      dst[i][GCOMP] =
+      dst[i][BCOMP] = 0.0F;
+      dst[i][ACOMP] = UBYTE_TO_FLOAT(s[i]);
+   }
 }
 
 static void
-unpack_A16(const void *src, GLfloat dst[4])
+unpack_A16(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLushort s = *((const GLushort *) src);
-   dst[RCOMP] =
-   dst[GCOMP] =
-   dst[BCOMP] = 0.0F;
-   dst[ACOMP] = USHORT_TO_FLOAT(s);
+   const GLushort *s = ((const GLushort *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] =
+      dst[i][GCOMP] =
+      dst[i][BCOMP] = 0.0F;
+      dst[i][ACOMP] = USHORT_TO_FLOAT(s[i]);
+   }
 }
 
 static void
-unpack_L8(const void *src, GLfloat dst[4])
+unpack_L8(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLubyte s = *((const GLubyte *) src);
-   dst[RCOMP] =
-   dst[GCOMP] =
-   dst[BCOMP] = UBYTE_TO_FLOAT(s);
-   dst[ACOMP] = 1.0F;
+   const GLubyte *s = ((const GLubyte *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] =
+      dst[i][GCOMP] =
+      dst[i][BCOMP] = UBYTE_TO_FLOAT(s[i]);
+      dst[i][ACOMP] = 1.0F;
+   }
 }
 
 static void
-unpack_L16(const void *src, GLfloat dst[4])
+unpack_L16(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLushort s = *((const GLushort *) src);
-   dst[RCOMP] =
-   dst[GCOMP] =
-   dst[BCOMP] = USHORT_TO_FLOAT(s);
-   dst[ACOMP] = 1.0F;
+   const GLushort *s = ((const GLushort *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] =
+      dst[i][GCOMP] =
+      dst[i][BCOMP] = USHORT_TO_FLOAT(s[i]);
+      dst[i][ACOMP] = 1.0F;
+   }
 }
 
 static void
-unpack_I8(const void *src, GLfloat dst[4])
+unpack_I8(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLubyte s = *((const GLubyte *) src);
-   dst[RCOMP] =
-   dst[GCOMP] =
-   dst[BCOMP] =
-   dst[ACOMP] = UBYTE_TO_FLOAT(s);
+   const GLubyte *s = ((const GLubyte *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] =
+      dst[i][GCOMP] =
+      dst[i][BCOMP] =
+      dst[i][ACOMP] = UBYTE_TO_FLOAT(s[i]);
+   }
 }
 
 static void
-unpack_I16(const void *src, GLfloat dst[4])
+unpack_I16(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLushort s = *((const GLushort *) src);
-   dst[RCOMP] =
-   dst[GCOMP] =
-   dst[BCOMP] =
-   dst[ACOMP] = USHORT_TO_FLOAT(s);
+   const GLushort *s = ((const GLushort *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] =
+      dst[i][GCOMP] =
+      dst[i][BCOMP] =
+      dst[i][ACOMP] = USHORT_TO_FLOAT(s[i]);
+   }
 }
 
 static void
-unpack_YCBCR(const void *src, GLfloat dst[4])
+unpack_YCBCR(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLuint i = 0;
-   const GLushort *src0 = (const GLushort *) src;
-   const GLushort *src1 = src0 + 1;                               /* odd */
-   const GLubyte y0 = (*src0 >> 8) & 0xff;  /* luminance */
-   const GLubyte cb = *src0 & 0xff;         /* chroma U */
-   const GLubyte y1 = (*src1 >> 8) & 0xff;  /* luminance */
-   const GLubyte cr = *src1 & 0xff;         /* chroma V */
-   const GLubyte y = (i & 1) ? y1 : y0;     /* choose even/odd luminance */
-   GLfloat r = 1.164F * (y - 16) + 1.596F * (cr - 128);
-   GLfloat g = 1.164F * (y - 16) - 0.813F * (cr - 128) - 0.391F * (cb - 128);
-   GLfloat b = 1.164F * (y - 16) + 2.018F * (cb - 128);
-   r *= (1.0F / 255.0F);
-   g *= (1.0F / 255.0F);
-   b *= (1.0F / 255.0F);
-   dst[RCOMP] = CLAMP(r, 0.0F, 1.0F);
-   dst[GCOMP] = CLAMP(g, 0.0F, 1.0F);
-   dst[BCOMP] = CLAMP(b, 0.0F, 1.0F);
-   dst[ACOMP] = 1.0F;
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      const GLushort *src0 = ((const GLushort *) src) + i * 2; /* even */
+      const GLushort *src1 = src0 + 1;         /* odd */
+      const GLubyte y0 = (*src0 >> 8) & 0xff;  /* luminance */
+      const GLubyte cb = *src0 & 0xff;         /* chroma U */
+      const GLubyte y1 = (*src1 >> 8) & 0xff;  /* luminance */
+      const GLubyte cr = *src1 & 0xff;         /* chroma V */
+      const GLubyte y = (i & 1) ? y1 : y0;     /* choose even/odd luminance */
+      GLfloat r = 1.164F * (y - 16) + 1.596F * (cr - 128);
+      GLfloat g = 1.164F * (y - 16) - 0.813F * (cr - 128) - 0.391F * (cb - 128);
+      GLfloat b = 1.164F * (y - 16) + 2.018F * (cb - 128);
+      r *= (1.0F / 255.0F);
+      g *= (1.0F / 255.0F);
+      b *= (1.0F / 255.0F);
+      dst[i][RCOMP] = CLAMP(r, 0.0F, 1.0F);
+      dst[i][GCOMP] = CLAMP(g, 0.0F, 1.0F);
+      dst[i][BCOMP] = CLAMP(b, 0.0F, 1.0F);
+      dst[i][ACOMP] = 1.0F;
+   }
 }
 
 static void
-unpack_YCBCR_REV(const void *src, GLfloat dst[4])
+unpack_YCBCR_REV(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLuint i = 0;
-   const GLushort *src0 = (const GLushort *) src;
-   const GLushort *src1 = src0 + 1;                               /* odd */
-   const GLubyte y0 = *src0 & 0xff;         /* luminance */
-   const GLubyte cr = (*src0 >> 8) & 0xff;  /* chroma V */
-   const GLubyte y1 = *src1 & 0xff;         /* luminance */
-   const GLubyte cb = (*src1 >> 8) & 0xff;  /* chroma U */
-   const GLubyte y = (i & 1) ? y1 : y0;     /* choose even/odd luminance */
-   GLfloat r = 1.164F * (y - 16) + 1.596F * (cr - 128);
-   GLfloat g = 1.164F * (y - 16) - 0.813F * (cr - 128) - 0.391F * (cb - 128);
-   GLfloat b = 1.164F * (y - 16) + 2.018F * (cb - 128);
-   r *= (1.0F / 255.0F);
-   g *= (1.0F / 255.0F);
-   b *= (1.0F / 255.0F);
-   dst[RCOMP] = CLAMP(r, 0.0F, 1.0F);
-   dst[GCOMP] = CLAMP(g, 0.0F, 1.0F);
-   dst[BCOMP] = CLAMP(b, 0.0F, 1.0F);
-   dst[ACOMP] = 1.0F;
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      const GLushort *src0 = ((const GLushort *) src) + i * 2; /* even */
+      const GLushort *src1 = src0 + 1;         /* odd */
+      const GLubyte y0 = *src0 & 0xff;         /* luminance */
+      const GLubyte cr = (*src0 >> 8) & 0xff;  /* chroma V */
+      const GLubyte y1 = *src1 & 0xff;         /* luminance */
+      const GLubyte cb = (*src1 >> 8) & 0xff;  /* chroma U */
+      const GLubyte y = (i & 1) ? y1 : y0;     /* choose even/odd luminance */
+      GLfloat r = 1.164F * (y - 16) + 1.596F * (cr - 128);
+      GLfloat g = 1.164F * (y - 16) - 0.813F * (cr - 128) - 0.391F * (cb - 128);
+      GLfloat b = 1.164F * (y - 16) + 2.018F * (cb - 128);
+      r *= (1.0F / 255.0F);
+      g *= (1.0F / 255.0F);
+      b *= (1.0F / 255.0F);
+      dst[i][RCOMP] = CLAMP(r, 0.0F, 1.0F);
+      dst[i][GCOMP] = CLAMP(g, 0.0F, 1.0F);
+      dst[i][BCOMP] = CLAMP(b, 0.0F, 1.0F);
+      dst[i][ACOMP] = 1.0F;
+   }
 }
 
 static void
-unpack_R8(const void *src, GLfloat dst[4])
+unpack_R8(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLubyte s = *((const GLubyte *) src);
-   dst[0] = UBYTE_TO_FLOAT(s);
-   dst[1] = dst[2] = 0.0F;
-   dst[3] = 1.0F;
+   const GLubyte *s = ((const GLubyte *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][0] = UBYTE_TO_FLOAT(s[i]);
+      dst[i][1] =
+      dst[i][2] = 0.0F;
+      dst[i][3] = 1.0F;
+   }
 }
 
 static void
-unpack_RG88(const void *src, GLfloat dst[4])
+unpack_RG88(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLushort s = *((const GLushort *) src);
-   dst[RCOMP] = UBYTE_TO_FLOAT( s & 0xff );
-   dst[GCOMP] = UBYTE_TO_FLOAT( s >> 8 );
-   dst[BCOMP] = 0.0;
-   dst[ACOMP] = 1.0;
+   const GLushort *s = ((const GLushort *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = UBYTE_TO_FLOAT( s[i] & 0xff );
+      dst[i][GCOMP] = UBYTE_TO_FLOAT( s[i] >> 8 );
+      dst[i][BCOMP] = 0.0;
+      dst[i][ACOMP] = 1.0;
+   }
 }
 
 static void
-unpack_RG88_REV(const void *src, GLfloat dst[4])
+unpack_RG88_REV(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLushort s = *((const GLushort *) src);
-   dst[RCOMP] = UBYTE_TO_FLOAT( s & 0xff );
-   dst[GCOMP] = UBYTE_TO_FLOAT( s >> 8 );
-   dst[BCOMP] = 0.0;
-   dst[ACOMP] = 1.0;
+   const GLushort *s = ((const GLushort *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = UBYTE_TO_FLOAT( s[i] & 0xff );
+      dst[i][GCOMP] = UBYTE_TO_FLOAT( s[i] >> 8 );
+      dst[i][BCOMP] = 0.0;
+      dst[i][ACOMP] = 1.0;
+   }
 }
 
 static void
-unpack_R16(const void *src, GLfloat dst[4])
+unpack_R16(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLushort s = *((const GLushort *) src);
-   dst[RCOMP] = USHORT_TO_FLOAT(s);
-   dst[GCOMP] = 0.0;
-   dst[BCOMP] = 0.0;
-   dst[ACOMP] = 1.0;
+   const GLushort *s = ((const GLushort *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = USHORT_TO_FLOAT(s[i]);
+      dst[i][GCOMP] = 0.0;
+      dst[i][BCOMP] = 0.0;
+      dst[i][ACOMP] = 1.0;
+   }
 }
 
 static void
-unpack_RG1616(const void *src, GLfloat dst[4])
+unpack_RG1616(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLuint s = *((const GLuint *) src);
-   dst[RCOMP] = USHORT_TO_FLOAT( s & 0xffff );
-   dst[GCOMP] = USHORT_TO_FLOAT( s >> 16 );
-   dst[BCOMP] = 0.0;
-   dst[ACOMP] = 1.0;
+   const GLuint *s = ((const GLuint *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = USHORT_TO_FLOAT( s[i] & 0xffff );
+      dst[i][GCOMP] = USHORT_TO_FLOAT( s[i] >> 16 );
+      dst[i][BCOMP] = 0.0;
+      dst[i][ACOMP] = 1.0;
+   }
 }
 
 static void
-unpack_RG1616_REV(const void *src, GLfloat dst[4])
+unpack_RG1616_REV(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLuint s = *((const GLuint *) src);
-   dst[RCOMP] = USHORT_TO_FLOAT( s >> 16 );
-   dst[GCOMP] = USHORT_TO_FLOAT( s & 0xffff );
-   dst[BCOMP] = 0.0;
-   dst[ACOMP] = 1.0;
+   const GLuint *s = ((const GLuint *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = USHORT_TO_FLOAT( s[i] >> 16 );
+      dst[i][GCOMP] = USHORT_TO_FLOAT( s[i] & 0xffff );
+      dst[i][BCOMP] = 0.0;
+      dst[i][ACOMP] = 1.0;
+   }
 }
 
 static void
-unpack_ARGB2101010(const void *src, GLfloat dst[4])
+unpack_ARGB2101010(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLuint s = *((const GLuint *) src);
-   dst[RCOMP] = ((s >> 20) & 0x3ff) * (1.0F / 1023.0F);
-   dst[GCOMP] = ((s >> 10) & 0x3ff) * (1.0F / 1023.0F);
-   dst[BCOMP] = ((s >>  0) & 0x3ff) * (1.0F / 1023.0F);
-   dst[ACOMP] = ((s >> 30) & 0x03) * (1.0F / 3.0F);
+   const GLuint *s = ((const GLuint *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = ((s[i] >> 20) & 0x3ff) * (1.0F / 1023.0F);
+      dst[i][GCOMP] = ((s[i] >> 10) & 0x3ff) * (1.0F / 1023.0F);
+      dst[i][BCOMP] = ((s[i] >>  0) & 0x3ff) * (1.0F / 1023.0F);
+      dst[i][ACOMP] = ((s[i] >> 30) &  0x03) * (1.0F / 3.0F);
+   }
 }
 
 
 static void
-unpack_Z24_S8(const void *src, GLfloat dst[4])
+unpack_Z24_S8(const void *src, GLfloat dst[][4], GLuint n)
 {
    /* only return Z, not stencil data */
-   const GLuint s = *((const GLuint *) src);
+   const GLuint *s = ((const GLuint *) src);
    const GLfloat scale = 1.0F / (GLfloat) 0xffffff;
-   dst[0] = dst[1] = dst[2] = (s >> 8) * scale;
-   dst[3] = 1.0F;
-   ASSERT(dst[0] >= 0.0F);
-   ASSERT(dst[0] <= 1.0F);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][0] =
+      dst[i][1] =
+      dst[i][2] = (s[i] >> 8) * scale;
+      dst[i][3] = 1.0F;
+      ASSERT(dst[i][0] >= 0.0F);
+      ASSERT(dst[i][0] <= 1.0F);
+   }
 }
 
 static void
-unpack_S8_Z24(const void *src, GLfloat dst[4])
+unpack_S8_Z24(const void *src, GLfloat dst[][4], GLuint n)
 {
    /* only return Z, not stencil data */
-   const GLuint s = *((const GLuint *) src);
+   const GLuint *s = ((const GLuint *) src);
    const GLfloat scale = 1.0F / (GLfloat) 0xffffff;
-   dst[0] = dst[1] = dst[2] = (s & 0x00ffffff) * scale;
-   dst[3] = 1.0F;
-   ASSERT(dst[0] >= 0.0F);
-   ASSERT(dst[0] <= 1.0F);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][0] =
+      dst[i][1] =
+      dst[i][2] = (s[i] & 0x00ffffff) * scale;
+      dst[i][3] = 1.0F;
+      ASSERT(dst[i][0] >= 0.0F);
+      ASSERT(dst[i][0] <= 1.0F);
+   }
 }
 
 static void
-unpack_Z16(const void *src, GLfloat dst[4])
+unpack_Z16(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLushort s = *((const GLushort *) src);
-   dst[0] = dst[1] = dst[2] = s * (1.0F / 65535.0F);
-   dst[3] = 1.0F;
+   const GLushort *s = ((const GLushort *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][0] =
+      dst[i][1] =
+      dst[i][2] = s[i] * (1.0F / 65535.0F);
+      dst[i][3] = 1.0F;
+   }
 }
 
 static void
-unpack_X8_Z24(const void *src, GLfloat dst[4])
+unpack_X8_Z24(const void *src, GLfloat dst[][4], GLuint n)
 {
-   unpack_S8_Z24(src, dst);
+   unpack_S8_Z24(src, dst, n);
 }
 
 static void
-unpack_Z24_X8(const void *src, GLfloat dst[4])
+unpack_Z24_X8(const void *src, GLfloat dst[][4], GLuint n)
 {
-   unpack_Z24_S8(src, dst);
+   unpack_Z24_S8(src, dst, n);
 }
 
 static void
-unpack_Z32(const void *src, GLfloat dst[4])
+unpack_Z32(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLuint s = *((const GLuint *) src);
-   dst[0] = dst[1] = dst[2] = s * (1.0F / 0xffffffff);
-   dst[3] = 1.0F;
+   const GLuint *s = ((const GLuint *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][0] =
+      dst[i][1] =
+      dst[i][2] = s[i] * (1.0F / 0xffffffff);
+      dst[i][3] = 1.0F;
+   }
 }
 
 static void
-unpack_Z32_FLOAT(const void *src, GLfloat dst[4])
+unpack_Z32_FLOAT(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLfloat s = *((const GLfloat *) src);
-   dst[0] = dst[1] = dst[2] = s;
-   dst[3] = 1.0F;
+   const GLfloat *s = ((const GLfloat *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][0] =
+      dst[i][1] =
+      dst[i][2] = s[i];
+      dst[i][3] = 1.0F;
+   }
 }
 
 static void
-unpack_Z32_FLOAT_X24S8(const void *src, GLfloat dst[4])
+unpack_Z32_FLOAT_X24S8(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLfloat s = *((const GLfloat *) src);
-   dst[0] = dst[1] = dst[2] = s;
-   dst[3] = 1.0F;
+   const GLfloat *s = ((const GLfloat *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][0] =
+      dst[i][1] =
+      dst[i][2] = s[i];
+      dst[i][3] = 1.0F;
+   }
 }
 
 
 static void
-unpack_S8(const void *src, GLfloat dst[4])
+unpack_S8(const void *src, GLfloat dst[][4], GLuint n)
 {
    /* should never be used */
-   dst[0] = dst[1] = dst[2] = 0.0F;
-   dst[3] = 1.0F;
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][0] =
+      dst[i][1] =
+      dst[i][2] = 0.0F;
+      dst[i][3] = 1.0F;
+   }
 }
 
 
 static void
-unpack_SRGB8(const void *src, GLfloat dst[4])
+unpack_SRGB8(const void *src, GLfloat dst[][4], GLuint n)
 {
    const GLubyte *s = (const GLubyte *) src;
-   dst[RCOMP] = nonlinear_to_linear(s[2]);
-   dst[GCOMP] = nonlinear_to_linear(s[1]);
-   dst[BCOMP] = nonlinear_to_linear(s[0]);
-   dst[ACOMP] = 1.0F;
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = nonlinear_to_linear(s[i*3+2]);
+      dst[i][GCOMP] = nonlinear_to_linear(s[i*3+1]);
+      dst[i][BCOMP] = nonlinear_to_linear(s[i*3+0]);
+      dst[i][ACOMP] = 1.0F;
+   }
 }
 
 static void
-unpack_SRGBA8(const void *src, GLfloat dst[4])
+unpack_SRGBA8(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLuint s = *((const GLuint *) src);
-   dst[RCOMP] = nonlinear_to_linear( (s >> 24) );
-   dst[GCOMP] = nonlinear_to_linear( (s >> 16) & 0xff );
-   dst[BCOMP] = nonlinear_to_linear( (s >>  8) & 0xff );
-   dst[ACOMP] = UBYTE_TO_FLOAT( (s      ) & 0xff ); /* linear! */
+   const GLuint *s = ((const GLuint *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = nonlinear_to_linear( (s[i] >> 24) );
+      dst[i][GCOMP] = nonlinear_to_linear( (s[i] >> 16) & 0xff );
+      dst[i][BCOMP] = nonlinear_to_linear( (s[i] >>  8) & 0xff );
+      dst[i][ACOMP] = UBYTE_TO_FLOAT( s[i] & 0xff ); /* linear! */
+   }
 }
 
 static void
-unpack_SARGB8(const void *src, GLfloat dst[4])
+unpack_SARGB8(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLuint s = *((const GLuint *) src);
-   dst[RCOMP] = nonlinear_to_linear( (s >> 16) & 0xff );
-   dst[GCOMP] = nonlinear_to_linear( (s >>  8) & 0xff );
-   dst[BCOMP] = nonlinear_to_linear( (s      ) & 0xff );
-   dst[ACOMP] = UBYTE_TO_FLOAT( (s >> 24) ); /* linear! */
+   const GLuint *s = ((const GLuint *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = nonlinear_to_linear( (s[i] >> 16) & 0xff );
+      dst[i][GCOMP] = nonlinear_to_linear( (s[i] >>  8) & 0xff );
+      dst[i][BCOMP] = nonlinear_to_linear( (s[i]      ) & 0xff );
+      dst[i][ACOMP] = UBYTE_TO_FLOAT( s[i] >> 24 ); /* linear! */
+   }
 }
 
 static void
-unpack_SL8(const void *src, GLfloat dst[4])
+unpack_SL8(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLubyte s = *((const GLubyte *) src);
-   dst[RCOMP] = 
-   dst[GCOMP] = 
-   dst[BCOMP] = nonlinear_to_linear(s);
-   dst[ACOMP] = 1.0F;
+   const GLubyte *s = ((const GLubyte *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = 
+      dst[i][GCOMP] = 
+      dst[i][BCOMP] = nonlinear_to_linear(s[i]);
+      dst[i][ACOMP] = 1.0F;
+   }
 }
 
 static void
-unpack_SLA8(const void *src, GLfloat dst[4])
+unpack_SLA8(const void *src, GLfloat dst[][4], GLuint n)
 {
    const GLubyte *s = (const GLubyte *) src;
-   dst[RCOMP] =
-   dst[GCOMP] =
-   dst[BCOMP] = nonlinear_to_linear(s[0]);
-   dst[ACOMP] = UBYTE_TO_FLOAT(s[1]); /* linear */
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] =
+      dst[i][GCOMP] =
+      dst[i][BCOMP] = nonlinear_to_linear(s[i*2+0]);
+      dst[i][ACOMP] = UBYTE_TO_FLOAT(s[i*2+1]); /* linear! */
+   }
 }
 
 static void
-unpack_SRGB_DXT1(const void *src, GLfloat dst[4])
+unpack_SRGB_DXT1(const void *src, GLfloat dst[][4], GLuint n)
 {
 }
 
 static void
-unpack_SRGBA_DXT1(const void *src, GLfloat dst[4])
+unpack_SRGBA_DXT1(const void *src, GLfloat dst[][4], GLuint n)
 {
 }
 
 static void
-unpack_SRGBA_DXT3(const void *src, GLfloat dst[4])
+unpack_SRGBA_DXT3(const void *src, GLfloat dst[][4], GLuint n)
 {
 }
 
 static void
-unpack_SRGBA_DXT5(const void *src, GLfloat dst[4])
+unpack_SRGBA_DXT5(const void *src, GLfloat dst[][4], GLuint n)
 {
 }
 
 static void
-unpack_RGB_FXT1(const void *src, GLfloat dst[4])
+unpack_RGB_FXT1(const void *src, GLfloat dst[][4], GLuint n)
 {
 }
 
 static void
-unpack_RGBA_FXT1(const void *src, GLfloat dst[4])
+unpack_RGBA_FXT1(const void *src, GLfloat dst[][4], GLuint n)
 {
 }
 
 static void
-unpack_RGB_DXT1(const void *src, GLfloat dst[4])
+unpack_RGB_DXT1(const void *src, GLfloat dst[][4], GLuint n)
 {
 }
 
 static void
-unpack_RGBA_DXT1(const void *src, GLfloat dst[4])
+unpack_RGBA_DXT1(const void *src, GLfloat dst[][4], GLuint n)
 {
 }
 
 static void
-unpack_RGBA_DXT3(const void *src, GLfloat dst[4])
+unpack_RGBA_DXT3(const void *src, GLfloat dst[][4], GLuint n)
 {
 }
 
 static void
-unpack_RGBA_DXT5(const void *src, GLfloat dst[4])
+unpack_RGBA_DXT5(const void *src, GLfloat dst[][4], GLuint n)
 {
 }
 
 
 static void
-unpack_RGBA_FLOAT32(const void *src, GLfloat dst[4])
+unpack_RGBA_FLOAT32(const void *src, GLfloat dst[][4], GLuint n)
 {
    const GLfloat *s = (const GLfloat *) src;
-   dst[RCOMP] = s[0];
-   dst[GCOMP] = s[1];
-   dst[BCOMP] = s[2];
-   dst[ACOMP] = s[3];
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = s[i*4+0];
+      dst[i][GCOMP] = s[i*4+1];
+      dst[i][BCOMP] = s[i*4+2];
+      dst[i][ACOMP] = s[i*4+3];
+   }
 }
 
 static void
-unpack_RGBA_FLOAT16(const void *src, GLfloat dst[4])
+unpack_RGBA_FLOAT16(const void *src, GLfloat dst[][4], GLuint n)
 {
    const GLhalfARB *s = (const GLhalfARB *) src;
-   dst[RCOMP] = _mesa_half_to_float(s[0]);
-   dst[GCOMP] = _mesa_half_to_float(s[1]);
-   dst[BCOMP] = _mesa_half_to_float(s[2]);
-   dst[ACOMP] = _mesa_half_to_float(s[3]);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = _mesa_half_to_float(s[i*4+0]);
+      dst[i][GCOMP] = _mesa_half_to_float(s[i*4+1]);
+      dst[i][BCOMP] = _mesa_half_to_float(s[i*4+2]);
+      dst[i][ACOMP] = _mesa_half_to_float(s[i*4+3]);
+   }
 }
 
 static void
-unpack_RGB_FLOAT32(const void *src, GLfloat dst[4])
+unpack_RGB_FLOAT32(const void *src, GLfloat dst[][4], GLuint n)
 {
    const GLfloat *s = (const GLfloat *) src;
-   dst[RCOMP] = s[0];
-   dst[GCOMP] = s[1];
-   dst[BCOMP] = s[2];
-   dst[ACOMP] = 1.0F;
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = s[i*3+0];
+      dst[i][GCOMP] = s[i*3+1];
+      dst[i][BCOMP] = s[i*3+2];
+      dst[i][ACOMP] = 1.0F;
+   }
 }
 
 static void
-unpack_RGB_FLOAT16(const void *src, GLfloat dst[4])
+unpack_RGB_FLOAT16(const void *src, GLfloat dst[][4], GLuint n)
 {
    const GLhalfARB *s = (const GLhalfARB *) src;
-   dst[RCOMP] = _mesa_half_to_float(s[0]);
-   dst[GCOMP] = _mesa_half_to_float(s[1]);
-   dst[BCOMP] = _mesa_half_to_float(s[2]);
-   dst[ACOMP] = 1.0F;
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = _mesa_half_to_float(s[i*3+0]);
+      dst[i][GCOMP] = _mesa_half_to_float(s[i*3+1]);
+      dst[i][BCOMP] = _mesa_half_to_float(s[i*3+2]);
+      dst[i][ACOMP] = 1.0F;
+   }
 }
 
 static void
-unpack_ALPHA_FLOAT32(const void *src, GLfloat dst[4])
+unpack_ALPHA_FLOAT32(const void *src, GLfloat dst[][4], GLuint n)
 {
    const GLfloat *s = (const GLfloat *) src;
-   dst[RCOMP] =
-   dst[GCOMP] =
-   dst[BCOMP] = 0.0F;
-   dst[ACOMP] = s[0];
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] =
+      dst[i][GCOMP] =
+      dst[i][BCOMP] = 0.0F;
+      dst[i][ACOMP] = s[i];
+   }
 }
 
 static void
-unpack_ALPHA_FLOAT16(const void *src, GLfloat dst[4])
+unpack_ALPHA_FLOAT16(const void *src, GLfloat dst[][4], GLuint n)
 {
    const GLhalfARB *s = (const GLhalfARB *) src;
-   dst[RCOMP] =
-   dst[GCOMP] =
-   dst[BCOMP] = 0.0F;
-   dst[ACOMP] = _mesa_half_to_float(s[0]);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] =
+      dst[i][GCOMP] =
+      dst[i][BCOMP] = 0.0F;
+      dst[i][ACOMP] = _mesa_half_to_float(s[i]);
+   }
 }
 
 static void
-unpack_LUMINANCE_FLOAT32(const void *src, GLfloat dst[4])
+unpack_LUMINANCE_FLOAT32(const void *src, GLfloat dst[][4], GLuint n)
 {
    const GLfloat *s = (const GLfloat *) src;
-   dst[RCOMP] =
-   dst[GCOMP] =
-   dst[BCOMP] = s[0];
-   dst[ACOMP] = 1.0F;
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] =
+      dst[i][GCOMP] =
+      dst[i][BCOMP] = s[i];
+      dst[i][ACOMP] = 1.0F;
+   }
 }
 
 static void
-unpack_LUMINANCE_FLOAT16(const void *src, GLfloat dst[4])
+unpack_LUMINANCE_FLOAT16(const void *src, GLfloat dst[][4], GLuint n)
 {
    const GLhalfARB *s = (const GLhalfARB *) src;
-   dst[RCOMP] =
-   dst[GCOMP] =
-   dst[BCOMP] = _mesa_half_to_float(s[0]);
-   dst[ACOMP] = 1.0F;
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] =
+      dst[i][GCOMP] =
+      dst[i][BCOMP] = _mesa_half_to_float(s[i]);
+      dst[i][ACOMP] = 1.0F;
+   }
 }
 
 static void
-unpack_LUMINANCE_ALPHA_FLOAT32(const void *src, GLfloat dst[4])
+unpack_LUMINANCE_ALPHA_FLOAT32(const void *src, GLfloat dst[][4], GLuint n)
 {
    const GLfloat *s = (const GLfloat *) src;
-   dst[RCOMP] =
-   dst[GCOMP] =
-   dst[BCOMP] = s[0];
-   dst[ACOMP] = s[1];
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] =
+      dst[i][GCOMP] =
+      dst[i][BCOMP] = s[i*2+0];
+      dst[i][ACOMP] = s[i*2+1];
+   }
 }
 
 static void
-unpack_LUMINANCE_ALPHA_FLOAT16(const void *src, GLfloat dst[4])
+unpack_LUMINANCE_ALPHA_FLOAT16(const void *src, GLfloat dst[][4], GLuint n)
 {
    const GLhalfARB *s = (const GLhalfARB *) src;
-   dst[RCOMP] =
-   dst[GCOMP] =
-   dst[BCOMP] = _mesa_half_to_float(s[0]);
-   dst[ACOMP] = _mesa_half_to_float(s[1]);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] =
+      dst[i][GCOMP] =
+      dst[i][BCOMP] = _mesa_half_to_float(s[i*2+0]);
+      dst[i][ACOMP] = _mesa_half_to_float(s[i*2+1]);
+   }
 }
 
 static void
-unpack_INTENSITY_FLOAT32(const void *src, GLfloat dst[4])
+unpack_INTENSITY_FLOAT32(const void *src, GLfloat dst[][4], GLuint n)
 {
    const GLfloat *s = (const GLfloat *) src;
-   dst[RCOMP] =
-   dst[GCOMP] =
-   dst[BCOMP] =
-   dst[ACOMP] = s[0];
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] =
+      dst[i][GCOMP] =
+      dst[i][BCOMP] =
+      dst[i][ACOMP] = s[i];
+   }
 }
 
 static void
-unpack_INTENSITY_FLOAT16(const void *src, GLfloat dst[4])
+unpack_INTENSITY_FLOAT16(const void *src, GLfloat dst[][4], GLuint n)
 {
    const GLhalfARB *s = (const GLhalfARB *) src;
-   dst[RCOMP] =
-   dst[GCOMP] =
-   dst[BCOMP] =
-   dst[ACOMP] = s[0];
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] =
+      dst[i][GCOMP] =
+      dst[i][BCOMP] =
+      dst[i][ACOMP] = s[i];
+   }
 }
 
 static void
-unpack_R_FLOAT32(const void *src, GLfloat dst[4])
+unpack_R_FLOAT32(const void *src, GLfloat dst[][4], GLuint n)
 {
    const GLfloat *s = (const GLfloat *) src;
-   dst[RCOMP] = s[0];
-   dst[GCOMP] = 0.0F;
-   dst[BCOMP] = 0.0F;
-   dst[ACOMP] = 1.0F;
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = s[i];
+      dst[i][GCOMP] = 0.0F;
+      dst[i][BCOMP] = 0.0F;
+      dst[i][ACOMP] = 1.0F;
+   }
 }
 
 static void
-unpack_R_FLOAT16(const void *src, GLfloat dst[4])
+unpack_R_FLOAT16(const void *src, GLfloat dst[][4], GLuint n)
 {
    const GLhalfARB *s = (const GLhalfARB *) src;
-   dst[RCOMP] = _mesa_half_to_float(s[0]);
-   dst[GCOMP] = 0.0F;
-   dst[BCOMP] = 0.0F;
-   dst[ACOMP] = 1.0F;
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = _mesa_half_to_float(s[i]);
+      dst[i][GCOMP] = 0.0F;
+      dst[i][BCOMP] = 0.0F;
+      dst[i][ACOMP] = 1.0F;
+   }
 }
 
 static void
-unpack_RG_FLOAT32(const void *src, GLfloat dst[4])
+unpack_RG_FLOAT32(const void *src, GLfloat dst[][4], GLuint n)
 {
    const GLfloat *s = (const GLfloat *) src;
-   dst[RCOMP] = s[0];
-   dst[GCOMP] = s[1];
-   dst[BCOMP] = 0.0F;
-   dst[ACOMP] = 1.0F;
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = s[i*2+0];
+      dst[i][GCOMP] = s[i*2+1];
+      dst[i][BCOMP] = 0.0F;
+      dst[i][ACOMP] = 1.0F;
+   }
 }
 
 static void
-unpack_RG_FLOAT16(const void *src, GLfloat dst[4])
+unpack_RG_FLOAT16(const void *src, GLfloat dst[][4], GLuint n)
 {
    const GLhalfARB *s = (const GLhalfARB *) src;
-   dst[RCOMP] = _mesa_half_to_float(s[0]);
-   dst[GCOMP] = _mesa_half_to_float(s[1]);
-   dst[BCOMP] = 0.0F;
-   dst[ACOMP] = 1.0F;
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = _mesa_half_to_float(s[i*2+0]);
+      dst[i][GCOMP] = _mesa_half_to_float(s[i*2+1]);
+      dst[i][BCOMP] = 0.0F;
+      dst[i][ACOMP] = 1.0F;
+   }
 }
 
 
 static void
-unpack_RGBA_INT8(const void *src, GLfloat dst[4])
+unpack_RGBA_INT8(const void *src, GLfloat dst[][4], GLuint n)
 {
    const GLbyte *s = (const GLbyte *) src;
-   dst[RCOMP] = (GLfloat) s[0];
-   dst[GCOMP] = (GLfloat) s[1];
-   dst[BCOMP] = (GLfloat) s[2];
-   dst[ACOMP] = (GLfloat) s[3];
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = (GLfloat) s[i*4+0];
+      dst[i][GCOMP] = (GLfloat) s[i*4+1];
+      dst[i][BCOMP] = (GLfloat) s[i*4+2];
+      dst[i][ACOMP] = (GLfloat) s[i*4+3];
+   }
 }
 
 static void
-unpack_RGBA_INT16(const void *src, GLfloat dst[4])
+unpack_RGBA_INT16(const void *src, GLfloat dst[][4], GLuint n)
 {
    const GLshort *s = (const GLshort *) src;
-   dst[RCOMP] = (GLfloat) s[0];
-   dst[GCOMP] = (GLfloat) s[1];
-   dst[BCOMP] = (GLfloat) s[2];
-   dst[ACOMP] = (GLfloat) s[3];
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = (GLfloat) s[i*4+0];
+      dst[i][GCOMP] = (GLfloat) s[i*4+1];
+      dst[i][BCOMP] = (GLfloat) s[i*4+2];
+      dst[i][ACOMP] = (GLfloat) s[i*4+3];
+   }
 }
 
 static void
-unpack_RGBA_INT32(const void *src, GLfloat dst[4])
+unpack_RGBA_INT32(const void *src, GLfloat dst[][4], GLuint n)
 {
    const GLint *s = (const GLint *) src;
-   dst[RCOMP] = (GLfloat) s[0];
-   dst[GCOMP] = (GLfloat) s[1];
-   dst[BCOMP] = (GLfloat) s[2];
-   dst[ACOMP] = (GLfloat) s[3];
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = (GLfloat) s[i*4+0];
+      dst[i][GCOMP] = (GLfloat) s[i*4+1];
+      dst[i][BCOMP] = (GLfloat) s[i*4+2];
+      dst[i][ACOMP] = (GLfloat) s[i*4+3];
+   }
 }
 
 static void
-unpack_RGBA_UINT8(const void *src, GLfloat dst[4])
+unpack_RGBA_UINT8(const void *src, GLfloat dst[][4], GLuint n)
 {
    const GLubyte *s = (const GLubyte *) src;
-   dst[RCOMP] = (GLfloat) s[0];
-   dst[GCOMP] = (GLfloat) s[1];
-   dst[BCOMP] = (GLfloat) s[2];
-   dst[ACOMP] = (GLfloat) s[3];
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = (GLfloat) s[i*4+0];
+      dst[i][GCOMP] = (GLfloat) s[i*4+1];
+      dst[i][BCOMP] = (GLfloat) s[i*4+2];
+      dst[i][ACOMP] = (GLfloat) s[i*4+3];
+   }
 }
 
 static void
-unpack_RGBA_UINT16(const void *src, GLfloat dst[4])
+unpack_RGBA_UINT16(const void *src, GLfloat dst[][4], GLuint n)
 {
    const GLushort *s = (const GLushort *) src;
-   dst[RCOMP] = (GLfloat) s[0];
-   dst[GCOMP] = (GLfloat) s[1];
-   dst[BCOMP] = (GLfloat) s[2];
-   dst[ACOMP] = (GLfloat) s[3];
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = (GLfloat) s[i*4+0];
+      dst[i][GCOMP] = (GLfloat) s[i*4+1];
+      dst[i][BCOMP] = (GLfloat) s[i*4+2];
+      dst[i][ACOMP] = (GLfloat) s[i*4+3];
+   }
 }
 
 static void
-unpack_RGBA_UINT32(const void *src, GLfloat dst[4])
+unpack_RGBA_UINT32(const void *src, GLfloat dst[][4], GLuint n)
 {
    const GLuint *s = (const GLuint *) src;
-   dst[RCOMP] = (GLfloat) s[0];
-   dst[GCOMP] = (GLfloat) s[1];
-   dst[BCOMP] = (GLfloat) s[2];
-   dst[ACOMP] = (GLfloat) s[3];
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = (GLfloat) s[i*4+0];
+      dst[i][GCOMP] = (GLfloat) s[i*4+1];
+      dst[i][BCOMP] = (GLfloat) s[i*4+2];
+      dst[i][ACOMP] = (GLfloat) s[i*4+3];
+   }
 }
 
 static void
-unpack_DUDV8(const void *src, GLfloat dst[4])
+unpack_DUDV8(const void *src, GLfloat dst[][4], GLuint n)
 {
    const GLbyte *s = (const GLbyte *) src;
-   dst[RCOMP] = BYTE_TO_FLOAT(s[0]);
-   dst[GCOMP] = BYTE_TO_FLOAT(s[1]);
-   dst[BCOMP] = 0;
-   dst[ACOMP] = 0;
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = BYTE_TO_FLOAT(s[i*2+0]);
+      dst[i][GCOMP] = BYTE_TO_FLOAT(s[i*2+1]);
+      dst[i][BCOMP] = 0;
+      dst[i][ACOMP] = 0;
+   }
 }
 
 static void
-unpack_SIGNED_R8(const void *src, GLfloat dst[4])
+unpack_SIGNED_R8(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLbyte s = *((const GLbyte *) src);
-   dst[RCOMP] = BYTE_TO_FLOAT_TEX( s );
-   dst[GCOMP] = 0.0F;
-   dst[BCOMP] = 0.0F;
-   dst[ACOMP] = 1.0F;
+   const GLbyte *s = ((const GLbyte *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = BYTE_TO_FLOAT_TEX( s[i] );
+      dst[i][GCOMP] = 0.0F;
+      dst[i][BCOMP] = 0.0F;
+      dst[i][ACOMP] = 1.0F;
+   }
 }
 
 static void
-unpack_SIGNED_RG88_REV(const void *src, GLfloat dst[4])
+unpack_SIGNED_RG88_REV(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLushort s = *((const GLushort *) src);
-   dst[RCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s & 0xff) );
-   dst[GCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >> 8) );
-   dst[BCOMP] = 0.0F;
-   dst[ACOMP] = 1.0F;
+   const GLushort *s = ((const GLushort *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s[i] & 0xff) );
+      dst[i][GCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s[i] >> 8) );
+      dst[i][BCOMP] = 0.0F;
+      dst[i][ACOMP] = 1.0F;
+   }
 }
 
 static void
-unpack_SIGNED_RGBX8888(const void *src, GLfloat dst[4])
+unpack_SIGNED_RGBX8888(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLuint s = *((const GLuint *) src);
-   dst[RCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >> 24) );
-   dst[GCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >> 16) );
-   dst[BCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >>  8) );
-   dst[ACOMP] = 1.0f;
+   const GLuint *s = ((const GLuint *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s[i] >> 24) );
+      dst[i][GCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s[i] >> 16) );
+      dst[i][BCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s[i] >>  8) );
+      dst[i][ACOMP] = 1.0f;
+   }
 }
 
 static void
-unpack_SIGNED_RGBA8888(const void *src, GLfloat dst[4])
+unpack_SIGNED_RGBA8888(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLuint s = *((const GLuint *) src);
-   dst[RCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >> 24) );
-   dst[GCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >> 16) );
-   dst[BCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >>  8) );
-   dst[ACOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s      ) );
+   const GLuint *s = ((const GLuint *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s[i] >> 24) );
+      dst[i][GCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s[i] >> 16) );
+      dst[i][BCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s[i] >>  8) );
+      dst[i][ACOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s[i]      ) );
+   }
 }
 
 static void
-unpack_SIGNED_RGBA8888_REV(const void *src, GLfloat dst[4])
+unpack_SIGNED_RGBA8888_REV(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLuint s = *((const GLuint *) src);
-   dst[RCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s      ) );
-   dst[GCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >>  8) );
-   dst[BCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >> 16) );
-   dst[ACOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >> 24) );
+   const GLuint *s = ((const GLuint *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s[i]      ) );
+      dst[i][GCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s[i] >>  8) );
+      dst[i][BCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s[i] >> 16) );
+      dst[i][ACOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s[i] >> 24) );
+   }
 }
 
 static void
-unpack_SIGNED_R16(const void *src, GLfloat dst[4])
+unpack_SIGNED_R16(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLshort s = *((const GLshort *) src);
-   dst[RCOMP] = SHORT_TO_FLOAT_TEX( s );
-   dst[GCOMP] = 0.0F;
-   dst[BCOMP] = 0.0F;
-   dst[ACOMP] = 1.0F;
+   const GLshort *s = ((const GLshort *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = SHORT_TO_FLOAT_TEX( s[i] );
+      dst[i][GCOMP] = 0.0F;
+      dst[i][BCOMP] = 0.0F;
+      dst[i][ACOMP] = 1.0F;
+   }
 }
 
 static void
-unpack_SIGNED_GR1616(const void *src, GLfloat dst[4])
+unpack_SIGNED_GR1616(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLuint s = *((const GLuint *) src);
-   dst[RCOMP] = SHORT_TO_FLOAT_TEX( s & 0xffff );
-   dst[GCOMP] = SHORT_TO_FLOAT_TEX( s >> 16 );
-   dst[BCOMP] = 0.0F;
-   dst[ACOMP] = 1.0F;
+   const GLuint *s = ((const GLuint *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = SHORT_TO_FLOAT_TEX( s[i] & 0xffff );
+      dst[i][GCOMP] = SHORT_TO_FLOAT_TEX( s[i] >> 16 );
+      dst[i][BCOMP] = 0.0F;
+      dst[i][ACOMP] = 1.0F;
+   }
 }
 
 static void
-unpack_SIGNED_RGB_16(const void *src, GLfloat dst[4])
+unpack_SIGNED_RGB_16(const void *src, GLfloat dst[][4], GLuint n)
 {
    const GLshort *s = (const GLshort *) src;
-   dst[RCOMP] = SHORT_TO_FLOAT_TEX( s[0] );
-   dst[GCOMP] = SHORT_TO_FLOAT_TEX( s[1] );
-   dst[BCOMP] = SHORT_TO_FLOAT_TEX( s[2] );
-   dst[ACOMP] = 1.0F;
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = SHORT_TO_FLOAT_TEX( s[i*3+0] );
+      dst[i][GCOMP] = SHORT_TO_FLOAT_TEX( s[i*3+1] );
+      dst[i][BCOMP] = SHORT_TO_FLOAT_TEX( s[i*3+2] );
+      dst[i][ACOMP] = 1.0F;
+   }
 }
 
 static void
-unpack_SIGNED_RGBA_16(const void *src, GLfloat dst[4])
+unpack_SIGNED_RGBA_16(const void *src, GLfloat dst[][4], GLuint n)
 {
    const GLshort *s = (const GLshort *) src;
-   dst[RCOMP] = SHORT_TO_FLOAT_TEX( s[0] );
-   dst[GCOMP] = SHORT_TO_FLOAT_TEX( s[1] );
-   dst[BCOMP] = SHORT_TO_FLOAT_TEX( s[2] );
-   dst[ACOMP] = SHORT_TO_FLOAT_TEX( s[3] );
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = SHORT_TO_FLOAT_TEX( s[i*4+0] );
+      dst[i][GCOMP] = SHORT_TO_FLOAT_TEX( s[i*4+1] );
+      dst[i][BCOMP] = SHORT_TO_FLOAT_TEX( s[i*4+2] );
+      dst[i][ACOMP] = SHORT_TO_FLOAT_TEX( s[i*4+3] );
+   }
 }
 
 static void
-unpack_RGBA_16(const void *src, GLfloat dst[4])
+unpack_RGBA_16(const void *src, GLfloat dst[][4], GLuint n)
 {
    const GLushort *s = (const GLushort *) src;
-   dst[RCOMP] = USHORT_TO_FLOAT( s[0] );
-   dst[GCOMP] = USHORT_TO_FLOAT( s[1] );
-   dst[BCOMP] = USHORT_TO_FLOAT( s[2] );
-   dst[ACOMP] = USHORT_TO_FLOAT( s[3] );
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = USHORT_TO_FLOAT( s[i*4+0] );
+      dst[i][GCOMP] = USHORT_TO_FLOAT( s[i*4+1] );
+      dst[i][BCOMP] = USHORT_TO_FLOAT( s[i*4+2] );
+      dst[i][ACOMP] = USHORT_TO_FLOAT( s[i*4+3] );
+   }
 }
 
 static void
-unpack_RED_RGTC1(const void *src, GLfloat dst[4])
+unpack_RED_RGTC1(const void *src, GLfloat dst[][4], GLuint n)
 {
    /* XXX to do */
 }
 
 static void
-unpack_SIGNED_RED_RGTC1(const void *src, GLfloat dst[4])
+unpack_SIGNED_RED_RGTC1(const void *src, GLfloat dst[][4], GLuint n)
 {
    /* XXX to do */
 }
 
 static void
-unpack_RG_RGTC2(const void *src, GLfloat dst[4])
+unpack_RG_RGTC2(const void *src, GLfloat dst[][4], GLuint n)
 {
    /* XXX to do */
 }
 
 static void
-unpack_SIGNED_RG_RGTC2(const void *src, GLfloat dst[4])
+unpack_SIGNED_RG_RGTC2(const void *src, GLfloat dst[][4], GLuint n)
 {
    /* XXX to do */
 }
 
 static void
-unpack_L_LATC1(const void *src, GLfloat dst[4])
+unpack_L_LATC1(const void *src, GLfloat dst[][4], GLuint n)
 {
    /* XXX to do */
 }
 
 static void
-unpack_SIGNED_L_LATC1(const void *src, GLfloat dst[4])
+unpack_SIGNED_L_LATC1(const void *src, GLfloat dst[][4], GLuint n)
 {
    /* XXX to do */
 }
 
 static void
-unpack_LA_LATC2(const void *src, GLfloat dst[4])
+unpack_LA_LATC2(const void *src, GLfloat dst[][4], GLuint n)
 {
    /* XXX to do */
 }
 
 static void
-unpack_SIGNED_LA_LATC2(const void *src, GLfloat dst[4])
+unpack_SIGNED_LA_LATC2(const void *src, GLfloat dst[][4], GLuint n)
 {
    /* XXX to do */
 }
 
 static void
-unpack_SIGNED_A8(const void *src, GLfloat dst[4])
+unpack_SIGNED_A8(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLbyte s = *((const GLbyte *) src);
-   dst[RCOMP] = 0.0F;
-   dst[GCOMP] = 0.0F;
-   dst[BCOMP] = 0.0F;
-   dst[ACOMP] = BYTE_TO_FLOAT_TEX( s );
+   const GLbyte *s = ((const GLbyte *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = 0.0F;
+      dst[i][GCOMP] = 0.0F;
+      dst[i][BCOMP] = 0.0F;
+      dst[i][ACOMP] = BYTE_TO_FLOAT_TEX( s[i] );
+   }
 }
 
 static void
-unpack_SIGNED_L8(const void *src, GLfloat dst[4])
+unpack_SIGNED_L8(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLbyte s = *((const GLbyte *) src);
-   dst[RCOMP] =
-   dst[GCOMP] =
-   dst[BCOMP] = BYTE_TO_FLOAT_TEX( s );
-   dst[ACOMP] = 1.0F;
+   const GLbyte *s = ((const GLbyte *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] =
+      dst[i][GCOMP] =
+      dst[i][BCOMP] = BYTE_TO_FLOAT_TEX( s[i] );
+      dst[i][ACOMP] = 1.0F;
+   }
 }
 
 static void
-unpack_SIGNED_AL88(const void *src, GLfloat dst[4])
+unpack_SIGNED_AL88(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLushort s = *((const GLshort *) src);
-   dst[RCOMP] =
-   dst[GCOMP] =
-   dst[BCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s & 0xff) );
-   dst[ACOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s >> 8) );
+   const GLshort *s = ((const GLshort *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] =
+      dst[i][GCOMP] =
+      dst[i][BCOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s[i] & 0xff) );
+      dst[i][ACOMP] = BYTE_TO_FLOAT_TEX( (GLbyte) (s[i] >> 8) );
+   }
 }
 
 static void
-unpack_SIGNED_I8(const void *src, GLfloat dst[4])
+unpack_SIGNED_I8(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLbyte s = *((const GLbyte *) src);
-   dst[RCOMP] =
-   dst[GCOMP] =
-   dst[BCOMP] =
-   dst[ACOMP] = BYTE_TO_FLOAT_TEX( s );
+   const GLbyte *s = ((const GLbyte *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] =
+      dst[i][GCOMP] =
+      dst[i][BCOMP] =
+      dst[i][ACOMP] = BYTE_TO_FLOAT_TEX( s[i] );
+   }
 }
 
 static void
-unpack_SIGNED_A16(const void *src, GLfloat dst[4])
+unpack_SIGNED_A16(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLshort s = *((const GLshort *) src);
-   dst[RCOMP] = 0.0F;
-   dst[GCOMP] = 0.0F;
-   dst[BCOMP] = 0.0F;
-   dst[ACOMP] = SHORT_TO_FLOAT_TEX( s );
+   const GLshort *s = ((const GLshort *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] = 0.0F;
+      dst[i][GCOMP] = 0.0F;
+      dst[i][BCOMP] = 0.0F;
+      dst[i][ACOMP] = SHORT_TO_FLOAT_TEX( s[i] );
+   }
 }
 
 static void
-unpack_SIGNED_L16(const void *src, GLfloat dst[4])
+unpack_SIGNED_L16(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLshort s = *((const GLshort *) src);
-   dst[RCOMP] =
-   dst[GCOMP] =
-   dst[BCOMP] = SHORT_TO_FLOAT_TEX( s );
-   dst[ACOMP] = 1.0F;
+   const GLshort *s = ((const GLshort *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] =
+      dst[i][GCOMP] =
+      dst[i][BCOMP] = SHORT_TO_FLOAT_TEX( s[i] );
+      dst[i][ACOMP] = 1.0F;
+   }
 }
 
 static void
-unpack_SIGNED_AL1616(const void *src, GLfloat dst[4])
+unpack_SIGNED_AL1616(const void *src, GLfloat dst[][4], GLuint n)
 {
    const GLshort *s = (const GLshort *) src;
-   dst[RCOMP] =
-   dst[GCOMP] =
-   dst[BCOMP] = SHORT_TO_FLOAT_TEX( s[0] );
-   dst[ACOMP] = SHORT_TO_FLOAT_TEX( s[1] );
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] =
+      dst[i][GCOMP] =
+      dst[i][BCOMP] = SHORT_TO_FLOAT_TEX( s[i*2+0] );
+      dst[i][ACOMP] = SHORT_TO_FLOAT_TEX( s[i*2+1] );
+   }
 }
 
 static void
-unpack_SIGNED_I16(const void *src, GLfloat dst[4])
+unpack_SIGNED_I16(const void *src, GLfloat dst[][4], GLuint n)
 {
-   const GLshort s = *((const GLshort *) src);
-   dst[RCOMP] =
-   dst[GCOMP] =
-   dst[BCOMP] =
-   dst[ACOMP] = SHORT_TO_FLOAT_TEX( s );
+   const GLshort *s = ((const GLshort *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i][RCOMP] =
+      dst[i][GCOMP] =
+      dst[i][BCOMP] =
+      dst[i][ACOMP] = SHORT_TO_FLOAT_TEX( s[i] );
+   }
 }
 
 static void
-unpack_RGB9_E5_FLOAT(const void *src, GLfloat dst[4])
+unpack_RGB9_E5_FLOAT(const void *src, GLfloat dst[][4], GLuint n)
 {
    const GLuint *s = (const GLuint *) src;
-   rgb9e5_to_float3(*s, dst);
-   dst[ACOMP] = 1.0F;
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      rgb9e5_to_float3(s[i], dst[i]);
+      dst[i][ACOMP] = 1.0F;
+   }
 }
 
 static void
-unpack_R11_G11_B10_FLOAT(const void *src, GLfloat dst[4])
+unpack_R11_G11_B10_FLOAT(const void *src, GLfloat dst[][4], GLuint n)
 {
    const GLuint *s = (const GLuint *) src;
-   r11g11b10f_to_float3(*s, dst);
-   dst[ACOMP] = 1.0F;
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      r11g11b10f_to_float3(s[i], dst[i]);
+      dst[i][ACOMP] = 1.0F;
+   }
 }
 
 
@@ -1248,14 +1534,7 @@ _mesa_unpack_rgba_row(gl_format format, GLuint n,
                       const void *src, GLfloat dst[][4])
 {
    unpack_rgba_func unpack = get_unpack_rgba_function(format);
-   GLuint srcStride = _mesa_get_format_bytes(format);
-   const GLubyte *srcPtr = (GLubyte *) src;
-   GLuint i;
-
-   for (i = 0; i < n; i++) {
-      unpack(srcPtr, dst[i]);
-      srcPtr += srcStride;
-   }
+   unpack(src, dst, n);
 }
 
 static void
@@ -1401,10 +1680,9 @@ _mesa_unpack_rgba_block(gl_format format,
    unpack_rgba_func unpack = get_unpack_rgba_function(format);
    const GLuint srcPixStride = _mesa_get_format_bytes(format);
    const GLuint dstPixStride = 4 * sizeof(GLfloat);
-   const GLubyte *srcRow, *srcPix;
+   const GLubyte *srcRow;
    GLubyte *dstRow;
-   GLfloat *dstPix;
-   GLuint i, j;
+   GLuint i;
 
    /* XXX needs to be fixed for compressed formats */
 
@@ -1412,14 +1690,7 @@ _mesa_unpack_rgba_block(gl_format format,
    dstRow = ((GLubyte *) dst) + dstRowStride * y + dstPixStride * x;
 
    for (i = 0; i < height; i++) {
-      srcPix = srcRow;
-      dstPix = (GLfloat *) dstRow;
-
-      for (j = 0; j < width; j++) {
-         unpack(srcPix, dstPix);
-         srcPix += srcPixStride;
-         dstPix += dstPixStride;
-      }
+      unpack(srcRow, (GLfloat (*)[4]) dstRow, width);
 
       dstRow += dstRowStride;
       srcRow += srcRowStride;
@@ -1429,60 +1700,64 @@ _mesa_unpack_rgba_block(gl_format format,
 
 
 
-typedef void (*unpack_float_z_func)(const void *src, GLfloat *dst);
+typedef void (*unpack_float_z_func)(GLuint n, const void *src, GLfloat *dst);
 
 static void
-unpack_float_z_Z24_S8(const void *src, GLfloat *dst)
+unpack_float_z_Z24_X8(GLuint n, const void *src, GLfloat *dst)
 {
    /* only return Z, not stencil data */
-   const GLuint s = *((const GLuint *) src);
+   const GLuint *s = ((const GLuint *) src);
    const GLfloat scale = 1.0F / (GLfloat) 0xffffff;
-   *dst = (s >> 8) * scale;
-   ASSERT(*dst >= 0.0F);
-   ASSERT(*dst <= 1.0F);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i] = (s[i] >> 8) * scale;
+      ASSERT(dst[i] >= 0.0F);
+      ASSERT(dst[i] <= 1.0F);
+   }
 }
 
 static void
-unpack_float_z_S8_Z24(const void *src, GLfloat *dst)
+unpack_float_z_X8_Z24(GLuint n, const void *src, GLfloat *dst)
 {
    /* only return Z, not stencil data */
-   const GLuint s = *((const GLuint *) src);
+   const GLuint *s = ((const GLuint *) src);
    const GLfloat scale = 1.0F / (GLfloat) 0xffffff;
-   *dst = (s & 0x00ffffff) * scale;
-   ASSERT(*dst >= 0.0F);
-   ASSERT(*dst <= 1.0F);
-}
-
-static void
-unpack_float_z_Z16(const void *src, GLfloat *dst)
-{
-   const GLushort s = *((const GLushort *) src);
-   *dst = s * (1.0F / 65535.0F);
-}
-
-static void
-unpack_float_z_X8_Z24(const void *src, GLfloat *dst)
-{
-   unpack_float_z_S8_Z24(src, dst);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i] = (s[i] & 0x00ffffff) * scale;
+      ASSERT(dst[i] >= 0.0F);
+      ASSERT(dst[i] <= 1.0F);
+   }
 }
 
 static void
-unpack_float_z_Z24_X8(const void *src, GLfloat *dst)
+unpack_float_z_Z16(GLuint n, const void *src, GLfloat *dst)
 {
-   unpack_float_z_Z24_S8(src, dst);
+   const GLushort *s = ((const GLushort *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i] = s[i] * (1.0F / 65535.0F);
+   }
 }
 
 static void
-unpack_float_z_Z32(const void *src, GLfloat *dst)
+unpack_float_z_Z32(GLuint n, const void *src, GLfloat *dst)
 {
-   const GLuint s = *((const GLuint *) src);
-   *dst = s * (1.0F / 0xffffffff);
+   const GLuint *s = ((const GLuint *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i] = s[i] * (1.0F / 0xffffffff);
+   }
 }
 
 static void
-unpack_float_z_Z32X24S8(const void *src, GLfloat *dst)
+unpack_float_z_Z32X24S8(GLuint n, const void *src, GLfloat *dst)
 {
-   *dst = *((const GLfloat *) src);
+   const GLfloat *s = ((const GLfloat *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i] = s[i * 2];
+   }
 }
 
 
@@ -1492,25 +1767,18 @@ _mesa_unpack_float_z_row(gl_format format, GLuint n,
                          const void *src, GLfloat *dst)
 {
    unpack_float_z_func unpack;
-   GLuint srcStride = _mesa_get_format_bytes(format);
-   const GLubyte *srcPtr = (GLubyte *) src;
-   GLuint i;
 
    switch (format) {
    case MESA_FORMAT_Z24_S8:
-      unpack = unpack_float_z_Z24_S8;
+   case MESA_FORMAT_Z24_X8:
+      unpack = unpack_float_z_Z24_X8;
       break;
    case MESA_FORMAT_S8_Z24:
-      unpack = unpack_float_z_S8_Z24;
-      break;
-   case MESA_FORMAT_Z16:
-      unpack = unpack_float_z_Z16;
-      break;
    case MESA_FORMAT_X8_Z24:
       unpack = unpack_float_z_X8_Z24;
       break;
-   case MESA_FORMAT_Z24_X8:
-      unpack = unpack_float_z_Z24_X8;
+   case MESA_FORMAT_Z16:
+      unpack = unpack_float_z_Z16;
       break;
    case MESA_FORMAT_Z32:
       unpack = unpack_float_z_Z32;
@@ -1524,43 +1792,49 @@ _mesa_unpack_float_z_row(gl_format format, GLuint n,
       return;
    }
 
-   for (i = 0; i < n; i++) {
-      unpack(srcPtr, &dst[i]);
-      srcPtr += srcStride;
-   }
+   unpack(n, src, dst);
 }
 
 
 
-typedef void (*unpack_uint_z_func)(const void *src, GLuint *dst);
+typedef void (*unpack_uint_z_func)(const void *src, GLuint *dst, GLuint n);
 
 static void
-unpack_uint_z_Z24_X8(const void *src, GLuint *dst)
+unpack_uint_z_Z24_X8(const void *src, GLuint *dst, GLuint n)
 {
    /* only return Z, not stencil data */
-   const GLuint s = *((const GLuint *) src);
-   *dst = (s & 0xffffff00) | (s >> 24);
+   const GLuint *s = ((const GLuint *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i] = (s[i] & 0xffffff00) | (s[i] >> 24);
+   }
 }
 
 static void
-unpack_uint_z_X8_Z24(const void *src, GLuint *dst)
+unpack_uint_z_X8_Z24(const void *src, GLuint *dst, GLuint n)
 {
    /* only return Z, not stencil data */
-   const GLuint s = *((const GLuint *) src);
-   *dst = (s << 8) | ((s >> 16) & 0xff);
+   const GLuint *s = ((const GLuint *) src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i] = (s[i] << 8) | ((s[i] >> 16) & 0xff);
+   }
 }
 
 static void
-unpack_uint_z_Z16(const void *src, GLuint *dst)
+unpack_uint_z_Z16(const void *src, GLuint *dst, GLuint n)
 {
-   const GLushort s = *((const GLushort *)src);
-   *dst = (s << 16) | s;
+   const GLushort *s = ((const GLushort *)src);
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      dst[i] = (s[i] << 16) | s[i];
+   }
 }
 
 static void
-unpack_uint_z_Z32(const void *src, GLuint *dst)
+unpack_uint_z_Z32(const void *src, GLuint *dst, GLuint n)
 {
-   *dst = *((const GLuint *) src);
+   memcpy(dst, src, n * sizeof(GLuint));
 }
 
 
@@ -1569,9 +1843,7 @@ _mesa_unpack_uint_z_row(gl_format format, GLuint n,
                         const void *src, GLuint *dst)
 {
    unpack_uint_z_func unpack;
-   GLuint srcStride = _mesa_get_format_bytes(format);
    const GLubyte *srcPtr = (GLubyte *) src;
-   GLuint i;
 
    switch (format) {
    case MESA_FORMAT_Z24_S8:
@@ -1594,12 +1866,10 @@ _mesa_unpack_uint_z_row(gl_format format, GLuint n,
       return;
    }
 
-   for (i = 0; i < n; i++) {
-      unpack(srcPtr, &dst[i]);
-      srcPtr += srcStride;
-   }
+   unpack(srcPtr, dst, n);
 }
 
+
 static void
 unpack_ubyte_s_S8(const void *src, GLubyte *dst, GLuint n)
 {
diff --git a/mesalib/src/mesa/main/image.c b/mesalib/src/mesa/main/image.c
index 7d95dd6be..914a99923 100644
--- a/mesalib/src/mesa/main/image.c
+++ b/mesalib/src/mesa/main/image.c
@@ -39,25 +39,6 @@
 #include "mtypes.h"
 
 
-/**
- * NOTE:
- * Normally, BYTE_TO_FLOAT(0) returns 0.00392  That causes problems when
- * we later convert the float to a packed integer value (such as for
- * GL_RGB5_A1) because we'll wind up with a non-zero value.
- *
- * We redefine the macros here so zero is handled correctly.
- */
-#undef BYTE_TO_FLOAT
-#define BYTE_TO_FLOAT(B)    ((B) == 0 ? 0.0F : ((2.0F * (B) + 1.0F) * (1.0F/255.0F)))
-
-#undef SHORT_TO_FLOAT
-#define SHORT_TO_FLOAT(S)   ((S) == 0 ? 0.0F : ((2.0F * (S) + 1.0F) * (1.0F/65535.0F)))
-
-
-
-/** Compute ceiling of integer quotient of A divided by B. */
-#define CEILING( A, B )  ( (A) % (B) == 0 ? (A)/(B) : (A)/(B)+1 )
-
 
 /**
  * \return GL_TRUE if type is packed pixel type, GL_FALSE otherwise.
@@ -195,38 +176,24 @@ _mesa_sizeof_packed_type( GLenum type )
       case GL_FLOAT:
 	 return sizeof(GLfloat);
       case GL_UNSIGNED_BYTE_3_3_2:
-         return sizeof(GLubyte);
       case GL_UNSIGNED_BYTE_2_3_3_REV:
-         return sizeof(GLubyte);
       case MESA_UNSIGNED_BYTE_4_4:
          return sizeof(GLubyte);
       case GL_UNSIGNED_SHORT_5_6_5:
-         return sizeof(GLushort);
       case GL_UNSIGNED_SHORT_5_6_5_REV:
-         return sizeof(GLushort);
       case GL_UNSIGNED_SHORT_4_4_4_4:
-         return sizeof(GLushort);
       case GL_UNSIGNED_SHORT_4_4_4_4_REV:
-         return sizeof(GLushort);
       case GL_UNSIGNED_SHORT_5_5_5_1:
-         return sizeof(GLushort);
       case GL_UNSIGNED_SHORT_1_5_5_5_REV:
+      case GL_UNSIGNED_SHORT_8_8_MESA:
+      case GL_UNSIGNED_SHORT_8_8_REV_MESA:
          return sizeof(GLushort);
       case GL_UNSIGNED_INT_8_8_8_8:
-         return sizeof(GLuint);
       case GL_UNSIGNED_INT_8_8_8_8_REV:
-         return sizeof(GLuint);
       case GL_UNSIGNED_INT_10_10_10_2:
-         return sizeof(GLuint);
       case GL_UNSIGNED_INT_2_10_10_10_REV:
-         return sizeof(GLuint);
-      case GL_UNSIGNED_SHORT_8_8_MESA:
-      case GL_UNSIGNED_SHORT_8_8_REV_MESA:
-         return sizeof(GLushort);      
       case GL_UNSIGNED_INT_24_8_EXT:
-         return sizeof(GLuint);
       case GL_UNSIGNED_INT_5_9_9_9_REV:
-         return sizeof(GLuint);
       case GL_UNSIGNED_INT_10F_11F_11F_REV:
          return sizeof(GLuint);
       case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
@@ -263,29 +230,27 @@ _mesa_components_in_format( GLenum format )
       case GL_LUMINANCE_INTEGER_EXT:
       case GL_INTENSITY:
          return 1;
+
       case GL_LUMINANCE_ALPHA:
       case GL_LUMINANCE_ALPHA_INTEGER_EXT:
       case GL_RG:
+      case GL_YCBCR_MESA:
+      case GL_DEPTH_STENCIL_EXT:
+      case GL_DUDV_ATI:
+      case GL_DU8DV8_ATI:
 	 return 2;
+
       case GL_RGB:
+      case GL_BGR:
       case GL_RGB_INTEGER_EXT:
 	 return 3;
+
       case GL_RGBA:
-      case GL_RGBA_INTEGER_EXT:
-	 return 4;
-      case GL_BGR:
-	 return 3;
       case GL_BGRA:
-	 return 4;
       case GL_ABGR_EXT:
+      case GL_RGBA_INTEGER_EXT:
          return 4;
-      case GL_YCBCR_MESA:
-         return 2;
-      case GL_DEPTH_STENCIL_EXT:
-         return 2;
-      case GL_DUDV_ATI:
-      case GL_DU8DV8_ATI:
-         return 2;
+
       default:
          return -1;
    }
@@ -987,36 +952,48 @@ _mesa_is_integer_format(GLenum format)
    /* specific integer formats */
    case GL_RGBA32UI_EXT:
    case GL_RGB32UI_EXT:
+   case GL_RG32UI:
+   case GL_R32UI:
    case GL_ALPHA32UI_EXT:
    case GL_INTENSITY32UI_EXT:
    case GL_LUMINANCE32UI_EXT:
    case GL_LUMINANCE_ALPHA32UI_EXT:
    case GL_RGBA16UI_EXT:
    case GL_RGB16UI_EXT:
+   case GL_RG16UI:
+   case GL_R16UI:
    case GL_ALPHA16UI_EXT:
    case GL_INTENSITY16UI_EXT:
    case GL_LUMINANCE16UI_EXT:
    case GL_LUMINANCE_ALPHA16UI_EXT:
    case GL_RGBA8UI_EXT:
    case GL_RGB8UI_EXT:
+   case GL_RG8UI:
+   case GL_R8UI:
    case GL_ALPHA8UI_EXT:
    case GL_INTENSITY8UI_EXT:
    case GL_LUMINANCE8UI_EXT:
    case GL_LUMINANCE_ALPHA8UI_EXT:
    case GL_RGBA32I_EXT:
    case GL_RGB32I_EXT:
+   case GL_RG32I:
+   case GL_R32I:
    case GL_ALPHA32I_EXT:
    case GL_INTENSITY32I_EXT:
    case GL_LUMINANCE32I_EXT:
    case GL_LUMINANCE_ALPHA32I_EXT:
    case GL_RGBA16I_EXT:
    case GL_RGB16I_EXT:
+   case GL_RG16I:
+   case GL_R16I:
    case GL_ALPHA16I_EXT:
    case GL_INTENSITY16I_EXT:
    case GL_LUMINANCE16I_EXT:
    case GL_LUMINANCE_ALPHA16I_EXT:
    case GL_RGBA8I_EXT:
    case GL_RGB8I_EXT:
+   case GL_RG8I:
+   case GL_R8I:
    case GL_ALPHA8I_EXT:
    case GL_INTENSITY8I_EXT:
    case GL_LUMINANCE8I_EXT:
diff --git a/mesalib/src/mesa/main/light.c b/mesalib/src/mesa/main/light.c
index 888e5622e..60daa89a3 100644
--- a/mesalib/src/mesa/main/light.c
+++ b/mesalib/src/mesa/main/light.c
@@ -1,1430 +1,1433 @@
-/*

- * Mesa 3-D graphics library

- * Version:  7.5

- *

- * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.

- * Copyright (C) 2009  VMware, Inc.  All Rights Reserved.

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- *

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-

-#include "glheader.h"

-#include "imports.h"

-#include "context.h"

-#include "enums.h"

-#include "light.h"

-#include "macros.h"

-#include "simple_list.h"

-#include "mtypes.h"

-#include "math/m_matrix.h"

-

-

-void GLAPIENTRY

-_mesa_ShadeModel( GLenum mode )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   if (MESA_VERBOSE & VERBOSE_API)

-      _mesa_debug(ctx, "glShadeModel %s\n", _mesa_lookup_enum_by_nr(mode));

-

-   if (mode != GL_FLAT && mode != GL_SMOOTH) {

-      _mesa_error(ctx, GL_INVALID_ENUM, "glShadeModel");

-      return;

-   }

-

-   if (ctx->Light.ShadeModel == mode)

-      return;

-

-   FLUSH_VERTICES(ctx, _NEW_LIGHT);

-   ctx->Light.ShadeModel = mode;

-   if (mode == GL_FLAT)

-      ctx->_TriangleCaps |= DD_FLATSHADE;

-   else

-      ctx->_TriangleCaps &= ~DD_FLATSHADE;

-

-   if (ctx->Driver.ShadeModel)

-      ctx->Driver.ShadeModel( ctx, mode );

-}

-

-

-/**

- * Set the provoking vertex (the vertex which specifies the prim's

- * color when flat shading) to either the first or last vertex of the

- * triangle or line.

- */

-void GLAPIENTRY

-_mesa_ProvokingVertexEXT(GLenum mode)

-{

-   GET_CURRENT_CONTEXT(ctx);

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   if (MESA_VERBOSE&VERBOSE_API)

-      _mesa_debug(ctx, "glProvokingVertexEXT 0x%x\n", mode);

-

-   switch (mode) {

-   case GL_FIRST_VERTEX_CONVENTION_EXT:

-   case GL_LAST_VERTEX_CONVENTION_EXT:

-      break;

-   default:

-      _mesa_error(ctx, GL_INVALID_ENUM, "glProvokingVertexEXT(0x%x)", mode);

-      return;

-   }

-

-   if (ctx->Light.ProvokingVertex == mode)

-      return;

-

-   FLUSH_VERTICES(ctx, _NEW_LIGHT);

-   ctx->Light.ProvokingVertex = mode;

-}

-

-

-/**

- * Helper function called by _mesa_Lightfv and _mesa_PopAttrib to set

- * per-light state.

- * For GL_POSITION and GL_SPOT_DIRECTION the params position/direction

- * will have already been transformed by the modelview matrix!

- * Also, all error checking should have already been done.

- */

-void

-_mesa_light(struct gl_context *ctx, GLuint lnum, GLenum pname, const GLfloat *params)

-{

-   struct gl_light *light;

-

-   ASSERT(lnum < MAX_LIGHTS);

-   light = &ctx->Light.Light[lnum];

-

-   switch (pname) {

-   case GL_AMBIENT:

-      if (TEST_EQ_4V(light->Ambient, params))

-	 return;

-      FLUSH_VERTICES(ctx, _NEW_LIGHT);

-      COPY_4V( light->Ambient, params );

-      break;

-   case GL_DIFFUSE:

-      if (TEST_EQ_4V(light->Diffuse, params))

-	 return;

-      FLUSH_VERTICES(ctx, _NEW_LIGHT);

-      COPY_4V( light->Diffuse, params );

-      break;

-   case GL_SPECULAR:

-      if (TEST_EQ_4V(light->Specular, params))

-	 return;

-      FLUSH_VERTICES(ctx, _NEW_LIGHT);

-      COPY_4V( light->Specular, params );

-      break;

-   case GL_POSITION:

-      /* NOTE: position has already been transformed by ModelView! */

-      if (TEST_EQ_4V(light->EyePosition, params))

-	 return;

-      FLUSH_VERTICES(ctx, _NEW_LIGHT);

-      COPY_4V(light->EyePosition, params);

-      if (light->EyePosition[3] != 0.0F)

-	 light->_Flags |= LIGHT_POSITIONAL;

-      else

-	 light->_Flags &= ~LIGHT_POSITIONAL;

-      break;

-   case GL_SPOT_DIRECTION:

-      /* NOTE: Direction already transformed by inverse ModelView! */

-      if (TEST_EQ_3V(light->SpotDirection, params))

-	 return;

-      FLUSH_VERTICES(ctx, _NEW_LIGHT);

-      COPY_3V(light->SpotDirection, params);

-      break;

-   case GL_SPOT_EXPONENT:

-      ASSERT(params[0] >= 0.0);

-      ASSERT(params[0] <= ctx->Const.MaxSpotExponent);

-      if (light->SpotExponent == params[0])

-	 return;

-      FLUSH_VERTICES(ctx, _NEW_LIGHT);

-      light->SpotExponent = params[0];

-      _mesa_invalidate_spot_exp_table(light);

-      break;

-   case GL_SPOT_CUTOFF:

-      ASSERT(params[0] == 180.0 || (params[0] >= 0.0 && params[0] <= 90.0));

-      if (light->SpotCutoff == params[0])

-         return;

-      FLUSH_VERTICES(ctx, _NEW_LIGHT);

-      light->SpotCutoff = params[0];

-      light->_CosCutoffNeg = (GLfloat) (cos(light->SpotCutoff * DEG2RAD));

-      if (light->_CosCutoffNeg < 0)

-         light->_CosCutoff = 0;

-      else

-         light->_CosCutoff = light->_CosCutoffNeg;

-      if (light->SpotCutoff != 180.0F)

-         light->_Flags |= LIGHT_SPOT;

-      else

-         light->_Flags &= ~LIGHT_SPOT;

-      break;

-   case GL_CONSTANT_ATTENUATION:

-      ASSERT(params[0] >= 0.0);

-      if (light->ConstantAttenuation == params[0])

-	 return;

-      FLUSH_VERTICES(ctx, _NEW_LIGHT);

-      light->ConstantAttenuation = params[0];

-      break;

-   case GL_LINEAR_ATTENUATION:

-      ASSERT(params[0] >= 0.0);

-      if (light->LinearAttenuation == params[0])

-	 return;

-      FLUSH_VERTICES(ctx, _NEW_LIGHT);

-      light->LinearAttenuation = params[0];

-      break;

-   case GL_QUADRATIC_ATTENUATION:

-      ASSERT(params[0] >= 0.0);

-      if (light->QuadraticAttenuation == params[0])

-	 return;

-      FLUSH_VERTICES(ctx, _NEW_LIGHT);

-      light->QuadraticAttenuation = params[0];

-      break;

-   default:

-      _mesa_problem(ctx, "Unexpected pname in _mesa_light()");

-      return;

-   }

-

-   if (ctx->Driver.Lightfv)

-      ctx->Driver.Lightfv( ctx, GL_LIGHT0 + lnum, pname, params );

-}

-

-

-void GLAPIENTRY

-_mesa_Lightf( GLenum light, GLenum pname, GLfloat param )

-{

-   GLfloat fparam[4];

-   fparam[0] = param;

-   fparam[1] = fparam[2] = fparam[3] = 0.0F;

-   _mesa_Lightfv( light, pname, fparam );

-}

-

-

-void GLAPIENTRY

-_mesa_Lightfv( GLenum light, GLenum pname, const GLfloat *params )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   GLint i = (GLint) (light - GL_LIGHT0);

-   GLfloat temp[4];

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   if (i < 0 || i >= (GLint) ctx->Const.MaxLights) {

-      _mesa_error( ctx, GL_INVALID_ENUM, "glLight(light=0x%x)", light );

-      return;

-   }

-

-   /* do particular error checks, transformations */

-   switch (pname) {

-   case GL_AMBIENT:

-   case GL_DIFFUSE:

-   case GL_SPECULAR:

-      /* nothing */

-      break;

-   case GL_POSITION:

-      /* transform position by ModelView matrix */

-      TRANSFORM_POINT(temp, ctx->ModelviewMatrixStack.Top->m, params);

-      params = temp;

-      break;

-   case GL_SPOT_DIRECTION:

-      /* transform direction by inverse modelview */

-      if (_math_matrix_is_dirty(ctx->ModelviewMatrixStack.Top)) {

-	 _math_matrix_analyse(ctx->ModelviewMatrixStack.Top);

-      }

-      TRANSFORM_DIRECTION(temp, params, ctx->ModelviewMatrixStack.Top->m);

-      params = temp;

-      break;

-   case GL_SPOT_EXPONENT:

-      if (params[0] < 0.0 || params[0] > ctx->Const.MaxSpotExponent) {

-	 _mesa_error(ctx, GL_INVALID_VALUE, "glLight");

-	 return;

-      }

-      break;

-   case GL_SPOT_CUTOFF:

-      if ((params[0] < 0.0 || params[0] > 90.0) && params[0] != 180.0) {

-	 _mesa_error(ctx, GL_INVALID_VALUE, "glLight");

-	 return;

-      }

-      break;

-   case GL_CONSTANT_ATTENUATION:

-      if (params[0] < 0.0) {

-	 _mesa_error(ctx, GL_INVALID_VALUE, "glLight");

-	 return;

-      }

-      break;

-   case GL_LINEAR_ATTENUATION:

-      if (params[0] < 0.0) {

-	 _mesa_error(ctx, GL_INVALID_VALUE, "glLight");

-	 return;

-      }

-      break;

-   case GL_QUADRATIC_ATTENUATION:

-      if (params[0] < 0.0) {

-	 _mesa_error(ctx, GL_INVALID_VALUE, "glLight");

-	 return;

-      }

-      break;

-   default:

-      _mesa_error(ctx, GL_INVALID_ENUM, "glLight(pname=0x%x)", pname);

-      return;

-   }

-

-   _mesa_light(ctx, i, pname, params);

-}

-

-

-void GLAPIENTRY

-_mesa_Lighti( GLenum light, GLenum pname, GLint param )

-{

-   GLint iparam[4];

-   iparam[0] = param;

-   iparam[1] = iparam[2] = iparam[3] = 0;

-   _mesa_Lightiv( light, pname, iparam );

-}

-

-

-void GLAPIENTRY

-_mesa_Lightiv( GLenum light, GLenum pname, const GLint *params )

-{

-   GLfloat fparam[4];

-

-   switch (pname) {

-      case GL_AMBIENT:

-      case GL_DIFFUSE:

-      case GL_SPECULAR:

-         fparam[0] = INT_TO_FLOAT( params[0] );

-         fparam[1] = INT_TO_FLOAT( params[1] );

-         fparam[2] = INT_TO_FLOAT( params[2] );

-         fparam[3] = INT_TO_FLOAT( params[3] );

-         break;

-      case GL_POSITION:

-         fparam[0] = (GLfloat) params[0];

-         fparam[1] = (GLfloat) params[1];

-         fparam[2] = (GLfloat) params[2];

-         fparam[3] = (GLfloat) params[3];

-         break;

-      case GL_SPOT_DIRECTION:

-         fparam[0] = (GLfloat) params[0];

-         fparam[1] = (GLfloat) params[1];

-         fparam[2] = (GLfloat) params[2];

-         break;

-      case GL_SPOT_EXPONENT:

-      case GL_SPOT_CUTOFF:

-      case GL_CONSTANT_ATTENUATION:

-      case GL_LINEAR_ATTENUATION:

-      case GL_QUADRATIC_ATTENUATION:

-         fparam[0] = (GLfloat) params[0];

-         break;

-      default:

-         /* error will be caught later in gl_Lightfv */

-         ;

-   }

-

-   _mesa_Lightfv( light, pname, fparam );

-}

-

-

-

-void GLAPIENTRY

-_mesa_GetLightfv( GLenum light, GLenum pname, GLfloat *params )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   GLint l = (GLint) (light - GL_LIGHT0);

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   if (l < 0 || l >= (GLint) ctx->Const.MaxLights) {

-      _mesa_error( ctx, GL_INVALID_ENUM, "glGetLightfv" );

-      return;

-   }

-

-   switch (pname) {

-      case GL_AMBIENT:

-         COPY_4V( params, ctx->Light.Light[l].Ambient );

-         break;

-      case GL_DIFFUSE:

-         COPY_4V( params, ctx->Light.Light[l].Diffuse );

-         break;

-      case GL_SPECULAR:

-         COPY_4V( params, ctx->Light.Light[l].Specular );

-         break;

-      case GL_POSITION:

-         COPY_4V( params, ctx->Light.Light[l].EyePosition );

-         break;

-      case GL_SPOT_DIRECTION:

-         COPY_3V( params, ctx->Light.Light[l].SpotDirection );

-         break;

-      case GL_SPOT_EXPONENT:

-         params[0] = ctx->Light.Light[l].SpotExponent;

-         break;

-      case GL_SPOT_CUTOFF:

-         params[0] = ctx->Light.Light[l].SpotCutoff;

-         break;

-      case GL_CONSTANT_ATTENUATION:

-         params[0] = ctx->Light.Light[l].ConstantAttenuation;

-         break;

-      case GL_LINEAR_ATTENUATION:

-         params[0] = ctx->Light.Light[l].LinearAttenuation;

-         break;

-      case GL_QUADRATIC_ATTENUATION:

-         params[0] = ctx->Light.Light[l].QuadraticAttenuation;

-         break;

-      default:

-         _mesa_error( ctx, GL_INVALID_ENUM, "glGetLightfv" );

-         break;

-   }

-}

-

-

-void GLAPIENTRY

-_mesa_GetLightiv( GLenum light, GLenum pname, GLint *params )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   GLint l = (GLint) (light - GL_LIGHT0);

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   if (l < 0 || l >= (GLint) ctx->Const.MaxLights) {

-      _mesa_error( ctx, GL_INVALID_ENUM, "glGetLightiv" );

-      return;

-   }

-

-   switch (pname) {

-      case GL_AMBIENT:

-         params[0] = FLOAT_TO_INT(ctx->Light.Light[l].Ambient[0]);

-         params[1] = FLOAT_TO_INT(ctx->Light.Light[l].Ambient[1]);

-         params[2] = FLOAT_TO_INT(ctx->Light.Light[l].Ambient[2]);

-         params[3] = FLOAT_TO_INT(ctx->Light.Light[l].Ambient[3]);

-         break;

-      case GL_DIFFUSE:

-         params[0] = FLOAT_TO_INT(ctx->Light.Light[l].Diffuse[0]);

-         params[1] = FLOAT_TO_INT(ctx->Light.Light[l].Diffuse[1]);

-         params[2] = FLOAT_TO_INT(ctx->Light.Light[l].Diffuse[2]);

-         params[3] = FLOAT_TO_INT(ctx->Light.Light[l].Diffuse[3]);

-         break;

-      case GL_SPECULAR:

-         params[0] = FLOAT_TO_INT(ctx->Light.Light[l].Specular[0]);

-         params[1] = FLOAT_TO_INT(ctx->Light.Light[l].Specular[1]);

-         params[2] = FLOAT_TO_INT(ctx->Light.Light[l].Specular[2]);

-         params[3] = FLOAT_TO_INT(ctx->Light.Light[l].Specular[3]);

-         break;

-      case GL_POSITION:

-         params[0] = (GLint) ctx->Light.Light[l].EyePosition[0];

-         params[1] = (GLint) ctx->Light.Light[l].EyePosition[1];

-         params[2] = (GLint) ctx->Light.Light[l].EyePosition[2];

-         params[3] = (GLint) ctx->Light.Light[l].EyePosition[3];

-         break;

-      case GL_SPOT_DIRECTION:

-         params[0] = (GLint) ctx->Light.Light[l].SpotDirection[0];

-         params[1] = (GLint) ctx->Light.Light[l].SpotDirection[1];

-         params[2] = (GLint) ctx->Light.Light[l].SpotDirection[2];

-         break;

-      case GL_SPOT_EXPONENT:

-         params[0] = (GLint) ctx->Light.Light[l].SpotExponent;

-         break;

-      case GL_SPOT_CUTOFF:

-         params[0] = (GLint) ctx->Light.Light[l].SpotCutoff;

-         break;

-      case GL_CONSTANT_ATTENUATION:

-         params[0] = (GLint) ctx->Light.Light[l].ConstantAttenuation;

-         break;

-      case GL_LINEAR_ATTENUATION:

-         params[0] = (GLint) ctx->Light.Light[l].LinearAttenuation;

-         break;

-      case GL_QUADRATIC_ATTENUATION:

-         params[0] = (GLint) ctx->Light.Light[l].QuadraticAttenuation;

-         break;

-      default:

-         _mesa_error( ctx, GL_INVALID_ENUM, "glGetLightiv" );

-         break;

-   }

-}

-

-

-

-/**********************************************************************/

-/***                        Light Model                             ***/

-/**********************************************************************/

-

-

-void GLAPIENTRY

-_mesa_LightModelfv( GLenum pname, const GLfloat *params )

-{

-   GLenum newenum;

-   GLboolean newbool;

-   GET_CURRENT_CONTEXT(ctx);

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   switch (pname) {

-      case GL_LIGHT_MODEL_AMBIENT:

-         if (TEST_EQ_4V( ctx->Light.Model.Ambient, params ))

-	    return;

-	 FLUSH_VERTICES(ctx, _NEW_LIGHT);

-         COPY_4V( ctx->Light.Model.Ambient, params );

-         break;

-      case GL_LIGHT_MODEL_LOCAL_VIEWER:

-         newbool = (params[0]!=0.0);

-	 if (ctx->Light.Model.LocalViewer == newbool)

-	    return;

-	 FLUSH_VERTICES(ctx, _NEW_LIGHT);

-	 ctx->Light.Model.LocalViewer = newbool;

-         break;

-      case GL_LIGHT_MODEL_TWO_SIDE:

-         newbool = (params[0]!=0.0);

-	 if (ctx->Light.Model.TwoSide == newbool)

-	    return;

-	 FLUSH_VERTICES(ctx, _NEW_LIGHT);

-	 ctx->Light.Model.TwoSide = newbool;

-         if (ctx->Light.Enabled && ctx->Light.Model.TwoSide)

-            ctx->_TriangleCaps |= DD_TRI_LIGHT_TWOSIDE;

-         else

-            ctx->_TriangleCaps &= ~DD_TRI_LIGHT_TWOSIDE;

-         break;

-      case GL_LIGHT_MODEL_COLOR_CONTROL:

-         if (params[0] == (GLfloat) GL_SINGLE_COLOR)

-	    newenum = GL_SINGLE_COLOR;

-         else if (params[0] == (GLfloat) GL_SEPARATE_SPECULAR_COLOR)

-	    newenum = GL_SEPARATE_SPECULAR_COLOR;

-	 else {

-            _mesa_error( ctx, GL_INVALID_ENUM, "glLightModel(param=0x0%x)",

-                         (GLint) params[0] );

-	    return;

-         }

-	 if (ctx->Light.Model.ColorControl == newenum)

-	    return;

-	 FLUSH_VERTICES(ctx, _NEW_LIGHT);

-	 ctx->Light.Model.ColorControl = newenum;

-         break;

-      default:

-         _mesa_error( ctx, GL_INVALID_ENUM, "glLightModel(pname=0x%x)", pname );

-         break;

-   }

-

-   if (ctx->Driver.LightModelfv)

-      ctx->Driver.LightModelfv( ctx, pname, params );

-}

-

-

-void GLAPIENTRY

-_mesa_LightModeliv( GLenum pname, const GLint *params )

-{

-   GLfloat fparam[4];

-

-   switch (pname) {

-      case GL_LIGHT_MODEL_AMBIENT:

-         fparam[0] = INT_TO_FLOAT( params[0] );

-         fparam[1] = INT_TO_FLOAT( params[1] );

-         fparam[2] = INT_TO_FLOAT( params[2] );

-         fparam[3] = INT_TO_FLOAT( params[3] );

-         break;

-      case GL_LIGHT_MODEL_LOCAL_VIEWER:

-      case GL_LIGHT_MODEL_TWO_SIDE:

-      case GL_LIGHT_MODEL_COLOR_CONTROL:

-         fparam[0] = (GLfloat) params[0];

-         break;

-      default:

-         /* Error will be caught later in gl_LightModelfv */

-         ASSIGN_4V(fparam, 0.0F, 0.0F, 0.0F, 0.0F);

-   }

-   _mesa_LightModelfv( pname, fparam );

-}

-

-

-void GLAPIENTRY

-_mesa_LightModeli( GLenum pname, GLint param )

-{

-   GLint iparam[4];

-   iparam[0] = param;

-   iparam[1] = iparam[2] = iparam[3] = 0;

-   _mesa_LightModeliv( pname, iparam );

-}

-

-

-void GLAPIENTRY

-_mesa_LightModelf( GLenum pname, GLfloat param )

-{

-   GLfloat fparam[4];

-   fparam[0] = param;

-   fparam[1] = fparam[2] = fparam[3] = 0.0F;

-   _mesa_LightModelfv( pname, fparam );

-}

-

-

-

-/********** MATERIAL **********/

-

-

-/*

- * Given a face and pname value (ala glColorMaterial), compute a bitmask

- * of the targeted material values.

- */

-GLuint

-_mesa_material_bitmask( struct gl_context *ctx, GLenum face, GLenum pname,

-                        GLuint legal, const char *where )

-{

-   GLuint bitmask = 0;

-

-   /* Make a bitmask indicating what material attribute(s) we're updating */

-   switch (pname) {

-      case GL_EMISSION:

-         bitmask |= MAT_BIT_FRONT_EMISSION | MAT_BIT_BACK_EMISSION;

-         break;

-      case GL_AMBIENT:

-         bitmask |= MAT_BIT_FRONT_AMBIENT | MAT_BIT_BACK_AMBIENT;

-         break;

-      case GL_DIFFUSE:

-         bitmask |= MAT_BIT_FRONT_DIFFUSE | MAT_BIT_BACK_DIFFUSE;

-         break;

-      case GL_SPECULAR:

-         bitmask |= MAT_BIT_FRONT_SPECULAR | MAT_BIT_BACK_SPECULAR;

-         break;

-      case GL_SHININESS:

-         bitmask |= MAT_BIT_FRONT_SHININESS | MAT_BIT_BACK_SHININESS;

-         break;

-      case GL_AMBIENT_AND_DIFFUSE:

-         bitmask |= MAT_BIT_FRONT_AMBIENT | MAT_BIT_BACK_AMBIENT;

-         bitmask |= MAT_BIT_FRONT_DIFFUSE | MAT_BIT_BACK_DIFFUSE;

-         break;

-      case GL_COLOR_INDEXES:

-         bitmask |= MAT_BIT_FRONT_INDEXES  | MAT_BIT_BACK_INDEXES;

-         break;

-      default:

-         _mesa_error( ctx, GL_INVALID_ENUM, "%s", where );

-         return 0;

-   }

-

-   if (face==GL_FRONT) {

-      bitmask &= FRONT_MATERIAL_BITS;

-   }

-   else if (face==GL_BACK) {

-      bitmask &= BACK_MATERIAL_BITS;

-   }

-   else if (face != GL_FRONT_AND_BACK) {

-      _mesa_error( ctx, GL_INVALID_ENUM, "%s", where );

-      return 0;

-   }

-

-   if (bitmask & ~legal) {

-      _mesa_error( ctx, GL_INVALID_ENUM, "%s", where );

-      return 0;

-   }

-

-   return bitmask;

-}

-

-

-

-/* Perform a straight copy between materials.

- */

-void

-_mesa_copy_materials( struct gl_material *dst,

-                      const struct gl_material *src,

-                      GLuint bitmask )

-{

-   int i;

-

-   for (i = 0 ; i < MAT_ATTRIB_MAX ; i++) 

-      if (bitmask & (1<<i))

-	 COPY_4FV( dst->Attrib[i], src->Attrib[i] );

-}

-

-

-

-/* Update derived values following a change in ctx->Light.Material

- */

-void

-_mesa_update_material( struct gl_context *ctx, GLuint bitmask )

-{

-   struct gl_light *light, *list = &ctx->Light.EnabledList;

-   GLfloat (*mat)[4] = ctx->Light.Material.Attrib;

-

-   if (MESA_VERBOSE & VERBOSE_MATERIAL) 

-      _mesa_debug(ctx, "_mesa_update_material, mask 0x%x\n", bitmask);

-

-   if (!bitmask)

-      return;

-

-   /* update material ambience */

-   if (bitmask & MAT_BIT_FRONT_AMBIENT) {

-      foreach (light, list) {

-         SCALE_3V( light->_MatAmbient[0], light->Ambient, 

-		   mat[MAT_ATTRIB_FRONT_AMBIENT]);

-      }

-   }

-

-   if (bitmask & MAT_BIT_BACK_AMBIENT) {

-      foreach (light, list) {

-         SCALE_3V( light->_MatAmbient[1], light->Ambient, 

-		   mat[MAT_ATTRIB_BACK_AMBIENT]);

-      }

-   }

-

-   /* update BaseColor = emission + scene's ambience * material's ambience */

-   if (bitmask & (MAT_BIT_FRONT_EMISSION | MAT_BIT_FRONT_AMBIENT)) {

-      COPY_3V( ctx->Light._BaseColor[0], mat[MAT_ATTRIB_FRONT_EMISSION] );

-      ACC_SCALE_3V( ctx->Light._BaseColor[0], mat[MAT_ATTRIB_FRONT_AMBIENT],

-		    ctx->Light.Model.Ambient );

-   }

-

-   if (bitmask & (MAT_BIT_BACK_EMISSION | MAT_BIT_BACK_AMBIENT)) {

-      COPY_3V( ctx->Light._BaseColor[1], mat[MAT_ATTRIB_BACK_EMISSION] );

-      ACC_SCALE_3V( ctx->Light._BaseColor[1], mat[MAT_ATTRIB_BACK_AMBIENT],

-		    ctx->Light.Model.Ambient );

-   }

-

-   /* update material diffuse values */

-   if (bitmask & MAT_BIT_FRONT_DIFFUSE) {

-      foreach (light, list) {

-	 SCALE_3V( light->_MatDiffuse[0], light->Diffuse, 

-		   mat[MAT_ATTRIB_FRONT_DIFFUSE] );

-      }

-   }

-

-   if (bitmask & MAT_BIT_BACK_DIFFUSE) {

-      foreach (light, list) {

-	 SCALE_3V( light->_MatDiffuse[1], light->Diffuse, 

-		   mat[MAT_ATTRIB_BACK_DIFFUSE] );

-      }

-   }

-

-   /* update material specular values */

-   if (bitmask & MAT_BIT_FRONT_SPECULAR) {

-      foreach (light, list) {

-	 SCALE_3V( light->_MatSpecular[0], light->Specular, 

-		   mat[MAT_ATTRIB_FRONT_SPECULAR]);

-      }

-   }

-

-   if (bitmask & MAT_BIT_BACK_SPECULAR) {

-      foreach (light, list) {

-	 SCALE_3V( light->_MatSpecular[1], light->Specular,

-		   mat[MAT_ATTRIB_BACK_SPECULAR]);

-      }

-   }

-

-   if (bitmask & MAT_BIT_FRONT_SHININESS) {

-      _mesa_invalidate_shine_table( ctx, 0 );

-   }

-

-   if (bitmask & MAT_BIT_BACK_SHININESS) {

-      _mesa_invalidate_shine_table( ctx, 1 );

-   }

-}

-

-

-/*

- * Update the current materials from the given rgba color

- * according to the bitmask in ColorMaterialBitmask, which is

- * set by glColorMaterial().

- */

-void

-_mesa_update_color_material( struct gl_context *ctx, const GLfloat color[4] )

-{

-   GLuint bitmask = ctx->Light.ColorMaterialBitmask;

-   struct gl_material *mat = &ctx->Light.Material;

-   int i;

-

-   for (i = 0 ; i < MAT_ATTRIB_MAX ; i++) 

-      if (bitmask & (1<<i))

-	 COPY_4FV( mat->Attrib[i], color );

-

-   _mesa_update_material( ctx, bitmask );

-}

-

-

-void GLAPIENTRY

-_mesa_ColorMaterial( GLenum face, GLenum mode )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   GLuint bitmask;

-   GLuint legal = (MAT_BIT_FRONT_EMISSION | MAT_BIT_BACK_EMISSION |

-		   MAT_BIT_FRONT_SPECULAR | MAT_BIT_BACK_SPECULAR |

-		   MAT_BIT_FRONT_DIFFUSE  | MAT_BIT_BACK_DIFFUSE  |

-		   MAT_BIT_FRONT_AMBIENT  | MAT_BIT_BACK_AMBIENT);

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   if (MESA_VERBOSE&VERBOSE_API)

-      _mesa_debug(ctx, "glColorMaterial %s %s\n",

-                  _mesa_lookup_enum_by_nr(face),

-                  _mesa_lookup_enum_by_nr(mode));

-

-   bitmask = _mesa_material_bitmask(ctx, face, mode, legal, "glColorMaterial");

-

-   if (ctx->Light.ColorMaterialBitmask == bitmask &&

-       ctx->Light.ColorMaterialFace == face &&

-       ctx->Light.ColorMaterialMode == mode)

-      return;

-

-   FLUSH_VERTICES(ctx, _NEW_LIGHT);

-   ctx->Light.ColorMaterialBitmask = bitmask;

-   ctx->Light.ColorMaterialFace = face;

-   ctx->Light.ColorMaterialMode = mode;

-

-   if (ctx->Light.ColorMaterialEnabled) {

-      FLUSH_CURRENT( ctx, 0 );

-      _mesa_update_color_material(ctx,ctx->Current.Attrib[VERT_ATTRIB_COLOR0]);

-   }

-

-   if (ctx->Driver.ColorMaterial)

-      ctx->Driver.ColorMaterial( ctx, face, mode );

-}

-

-

-void GLAPIENTRY

-_mesa_GetMaterialfv( GLenum face, GLenum pname, GLfloat *params )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   GLuint f;

-   GLfloat (*mat)[4] = ctx->Light.Material.Attrib;

-   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); /* update materials */

-

-   FLUSH_CURRENT(ctx, 0); /* update ctx->Light.Material from vertex buffer */

-

-   if (face==GL_FRONT) {

-      f = 0;

-   }

-   else if (face==GL_BACK) {

-      f = 1;

-   }

-   else {

-      _mesa_error( ctx, GL_INVALID_ENUM, "glGetMaterialfv(face)" );

-      return;

-   }

-

-   switch (pname) {

-      case GL_AMBIENT:

-         COPY_4FV( params, mat[MAT_ATTRIB_AMBIENT(f)] );

-         break;

-      case GL_DIFFUSE:

-         COPY_4FV( params, mat[MAT_ATTRIB_DIFFUSE(f)] );

-	 break;

-      case GL_SPECULAR:

-         COPY_4FV( params, mat[MAT_ATTRIB_SPECULAR(f)] );

-	 break;

-      case GL_EMISSION:

-	 COPY_4FV( params, mat[MAT_ATTRIB_EMISSION(f)] );

-	 break;

-      case GL_SHININESS:

-	 *params = mat[MAT_ATTRIB_SHININESS(f)][0];

-	 break;

-      case GL_COLOR_INDEXES:

-	 params[0] = mat[MAT_ATTRIB_INDEXES(f)][0];

-	 params[1] = mat[MAT_ATTRIB_INDEXES(f)][1];

-	 params[2] = mat[MAT_ATTRIB_INDEXES(f)][2];

-	 break;

-      default:

-         _mesa_error( ctx, GL_INVALID_ENUM, "glGetMaterialfv(pname)" );

-   }

-}

-

-

-void GLAPIENTRY

-_mesa_GetMaterialiv( GLenum face, GLenum pname, GLint *params )

-{

-   GET_CURRENT_CONTEXT(ctx);

-   GLuint f;

-   GLfloat (*mat)[4] = ctx->Light.Material.Attrib;

-   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); /* update materials */

-

-   FLUSH_CURRENT(ctx, 0); /* update ctx->Light.Material from vertex buffer */

-

-   if (face==GL_FRONT) {

-      f = 0;

-   }

-   else if (face==GL_BACK) {

-      f = 1;

-   }

-   else {

-      _mesa_error( ctx, GL_INVALID_ENUM, "glGetMaterialiv(face)" );

-      return;

-   }

-   switch (pname) {

-      case GL_AMBIENT:

-         params[0] = FLOAT_TO_INT( mat[MAT_ATTRIB_AMBIENT(f)][0] );

-         params[1] = FLOAT_TO_INT( mat[MAT_ATTRIB_AMBIENT(f)][1] );

-         params[2] = FLOAT_TO_INT( mat[MAT_ATTRIB_AMBIENT(f)][2] );

-         params[3] = FLOAT_TO_INT( mat[MAT_ATTRIB_AMBIENT(f)][3] );

-         break;

-      case GL_DIFFUSE:

-         params[0] = FLOAT_TO_INT( mat[MAT_ATTRIB_DIFFUSE(f)][0] );

-         params[1] = FLOAT_TO_INT( mat[MAT_ATTRIB_DIFFUSE(f)][1] );

-         params[2] = FLOAT_TO_INT( mat[MAT_ATTRIB_DIFFUSE(f)][2] );

-         params[3] = FLOAT_TO_INT( mat[MAT_ATTRIB_DIFFUSE(f)][3] );

-	 break;

-      case GL_SPECULAR:

-         params[0] = FLOAT_TO_INT( mat[MAT_ATTRIB_SPECULAR(f)][0] );

-         params[1] = FLOAT_TO_INT( mat[MAT_ATTRIB_SPECULAR(f)][1] );

-         params[2] = FLOAT_TO_INT( mat[MAT_ATTRIB_SPECULAR(f)][2] );

-         params[3] = FLOAT_TO_INT( mat[MAT_ATTRIB_SPECULAR(f)][3] );

-	 break;

-      case GL_EMISSION:

-         params[0] = FLOAT_TO_INT( mat[MAT_ATTRIB_EMISSION(f)][0] );

-         params[1] = FLOAT_TO_INT( mat[MAT_ATTRIB_EMISSION(f)][1] );

-         params[2] = FLOAT_TO_INT( mat[MAT_ATTRIB_EMISSION(f)][2] );

-         params[3] = FLOAT_TO_INT( mat[MAT_ATTRIB_EMISSION(f)][3] );

-	 break;

-      case GL_SHININESS:

-         *params = IROUND( mat[MAT_ATTRIB_SHININESS(f)][0] );

-	 break;

-      case GL_COLOR_INDEXES:

-	 params[0] = IROUND( mat[MAT_ATTRIB_INDEXES(f)][0] );

-	 params[1] = IROUND( mat[MAT_ATTRIB_INDEXES(f)][1] );

-	 params[2] = IROUND( mat[MAT_ATTRIB_INDEXES(f)][2] );

-	 break;

-      default:

-         _mesa_error( ctx, GL_INVALID_ENUM, "glGetMaterialfv(pname)" );

-   }

-}

-

-

-

-/**********************************************************************/

-/*****                  Lighting computation                      *****/

-/**********************************************************************/

-

-

-/*

- * Notes:

- *   When two-sided lighting is enabled we compute the color (or index)

- *   for both the front and back side of the primitive.  Then, when the

- *   orientation of the facet is later learned, we can determine which

- *   color (or index) to use for rendering.

- *

- *   KW: We now know orientation in advance and only shade for

- *       the side or sides which are actually required.

- *

- * Variables:

- *   n = normal vector

- *   V = vertex position

- *   P = light source position

- *   Pe = (0,0,0,1)

- *

- * Precomputed:

- *   IF P[3]==0 THEN

- *       // light at infinity

- *       IF local_viewer THEN

- *           _VP_inf_norm = unit vector from V to P      // Precompute

- *       ELSE

- *           // eye at infinity

- *           _h_inf_norm = Normalize( VP + <0,0,1> )     // Precompute

- *       ENDIF

- *   ENDIF

- *

- * Functions:

- *   Normalize( v ) = normalized vector v

- *   Magnitude( v ) = length of vector v

- */

-

-

-

-/*

- * Whenever the spotlight exponent for a light changes we must call

- * this function to recompute the exponent lookup table.

- */

-void

-_mesa_invalidate_spot_exp_table( struct gl_light *l )

-{

-   l->_SpotExpTable[0][0] = -1;

-}

-

-

-static void

-validate_spot_exp_table( struct gl_light *l )

-{

-   GLint i;

-   GLdouble exponent = l->SpotExponent;

-   GLdouble tmp = 0;

-   GLint clamp = 0;

-

-   l->_SpotExpTable[0][0] = 0.0;

-

-   for (i = EXP_TABLE_SIZE - 1; i > 0 ;i--) {

-      if (clamp == 0) {

-	 tmp = pow(i / (GLdouble) (EXP_TABLE_SIZE - 1), exponent);

-	 if (tmp < FLT_MIN * 100.0) {

-	    tmp = 0.0;

-	    clamp = 1;

-	 }

-      }

-      l->_SpotExpTable[i][0] = (GLfloat) tmp;

-   }

-   for (i = 0; i < EXP_TABLE_SIZE - 1; i++) {

-      l->_SpotExpTable[i][1] = (l->_SpotExpTable[i+1][0] -

-				l->_SpotExpTable[i][0]);

-   }

-   l->_SpotExpTable[EXP_TABLE_SIZE-1][1] = 0.0;

-}

-

-

-

-/* Calculate a new shine table.  Doing this here saves a branch in

- * lighting, and the cost of doing it early may be partially offset

- * by keeping a MRU cache of shine tables for various shine values.

- */

-void

-_mesa_invalidate_shine_table( struct gl_context *ctx, GLuint side )

-{

-   ASSERT(side < 2);

-   if (ctx->_ShineTable[side])

-      ctx->_ShineTable[side]->refcount--;

-   ctx->_ShineTable[side] = NULL;

-}

-

-

-static void

-validate_shine_table( struct gl_context *ctx, GLuint side, GLfloat shininess )

-{

-   struct gl_shine_tab *list = ctx->_ShineTabList;

-   struct gl_shine_tab *s;

-

-   ASSERT(side < 2);

-

-   foreach(s, list)

-      if ( s->shininess == shininess )

-	 break;

-

-   if (s == list) {

-      GLint j;

-      GLfloat *m;

-

-      foreach(s, list)

-	 if (s->refcount == 0)

-	    break;

-

-      m = s->tab;

-      m[0] = 0.0;

-      if (shininess == 0.0) {

-	 for (j = 1 ; j <= SHINE_TABLE_SIZE ; j++)

-	    m[j] = 1.0;

-      }

-      else {

-	 for (j = 1 ; j < SHINE_TABLE_SIZE ; j++) {

-            GLdouble t, x = j / (GLfloat) (SHINE_TABLE_SIZE - 1);

-            if (x < 0.005) /* underflow check */

-               x = 0.005;

-            t = pow(x, shininess);

-	    if (t > 1e-20)

-	       m[j] = (GLfloat) t;

-	    else

-	       m[j] = 0.0;

-	 }

-	 m[SHINE_TABLE_SIZE] = 1.0;

-      }

-

-      s->shininess = shininess;

-   }

-

-   if (ctx->_ShineTable[side])

-      ctx->_ShineTable[side]->refcount--;

-

-   ctx->_ShineTable[side] = s;

-   move_to_tail( list, s );

-   s->refcount++;

-}

-

-

-void

-_mesa_validate_all_lighting_tables( struct gl_context *ctx )

-{

-   GLuint i;

-   GLfloat shininess;

-   

-   shininess = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_SHININESS][0];

-   if (!ctx->_ShineTable[0] || ctx->_ShineTable[0]->shininess != shininess)

-      validate_shine_table( ctx, 0, shininess );

-

-   shininess = ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_SHININESS][0];

-   if (!ctx->_ShineTable[1] || ctx->_ShineTable[1]->shininess != shininess)

-      validate_shine_table( ctx, 1, shininess );

-

-   for (i = 0; i < ctx->Const.MaxLights; i++)

-      if (ctx->Light.Light[i]._SpotExpTable[0][0] == -1)

-	 validate_spot_exp_table( &ctx->Light.Light[i] );

-}

-

-

-/**

- * Examine current lighting parameters to determine if the optimized lighting

- * function can be used.

- * Also, precompute some lighting values such as the products of light

- * source and material ambient, diffuse and specular coefficients.

- */

-void

-_mesa_update_lighting( struct gl_context *ctx )

-{

-   struct gl_light *light;

-   ctx->Light._NeedEyeCoords = GL_FALSE;

-   ctx->Light._Flags = 0;

-

-   if (!ctx->Light.Enabled)

-      return;

-

-   foreach(light, &ctx->Light.EnabledList) {

-      ctx->Light._Flags |= light->_Flags;

-   }

-

-   ctx->Light._NeedVertices =

-      ((ctx->Light._Flags & (LIGHT_POSITIONAL|LIGHT_SPOT)) ||

-       ctx->Light.Model.ColorControl == GL_SEPARATE_SPECULAR_COLOR ||

-       ctx->Light.Model.LocalViewer);

-

-   ctx->Light._NeedEyeCoords = ((ctx->Light._Flags & LIGHT_POSITIONAL) ||

-				ctx->Light.Model.LocalViewer);

-

-   /* XXX: This test is overkill & needs to be fixed both for software and

-    * hardware t&l drivers.  The above should be sufficient & should

-    * be tested to verify this.

-    */

-   if (ctx->Light._NeedVertices)

-      ctx->Light._NeedEyeCoords = GL_TRUE;

-

-   /* Precompute some shading values.  Although we reference

-    * Light.Material here, we can get away without flushing

-    * FLUSH_UPDATE_CURRENT, as when any outstanding material changes

-    * are flushed, they will update the derived state at that time.

-    */

-   if (ctx->Light.Model.TwoSide)

-      _mesa_update_material(ctx,

-			    MAT_BIT_FRONT_EMISSION |

-			    MAT_BIT_FRONT_AMBIENT |

-			    MAT_BIT_FRONT_DIFFUSE |

-			    MAT_BIT_FRONT_SPECULAR |

-			    MAT_BIT_BACK_EMISSION |

-			    MAT_BIT_BACK_AMBIENT |

-			    MAT_BIT_BACK_DIFFUSE |

-			    MAT_BIT_BACK_SPECULAR);

-   else

-      _mesa_update_material(ctx,

-			    MAT_BIT_FRONT_EMISSION |

-			    MAT_BIT_FRONT_AMBIENT |

-			    MAT_BIT_FRONT_DIFFUSE |

-			    MAT_BIT_FRONT_SPECULAR);

-}

-

-

-/**

- * Update state derived from light position, spot direction.

- * Called upon:

- *   _NEW_MODELVIEW

- *   _NEW_LIGHT

- *   _TNL_NEW_NEED_EYE_COORDS

- *

- * Update on (_NEW_MODELVIEW | _NEW_LIGHT) when lighting is enabled.

- * Also update on lighting space changes.

- */

-static void

-compute_light_positions( struct gl_context *ctx )

-{

-   struct gl_light *light;

-   static const GLfloat eye_z[3] = { 0, 0, 1 };

-

-   if (!ctx->Light.Enabled)

-      return;

-

-   if (ctx->_NeedEyeCoords) {

-      COPY_3V( ctx->_EyeZDir, eye_z );

-   }

-   else {

-      TRANSFORM_NORMAL( ctx->_EyeZDir, eye_z, ctx->ModelviewMatrixStack.Top->m );

-   }

-

-   foreach (light, &ctx->Light.EnabledList) {

-

-      if (ctx->_NeedEyeCoords) {

-         /* _Position is in eye coordinate space */

-	 COPY_4FV( light->_Position, light->EyePosition );

-      }

-      else {

-         /* _Position is in object coordinate space */

-	 TRANSFORM_POINT( light->_Position, ctx->ModelviewMatrixStack.Top->inv,

-			  light->EyePosition );

-      }

-

-      if (!(light->_Flags & LIGHT_POSITIONAL)) {

-	 /* VP (VP) = Normalize( Position ) */

-	 COPY_3V( light->_VP_inf_norm, light->_Position );

-	 NORMALIZE_3FV( light->_VP_inf_norm );

-

-	 if (!ctx->Light.Model.LocalViewer) {

-	    /* _h_inf_norm = Normalize( V_to_P + <0,0,1> ) */

-	    ADD_3V( light->_h_inf_norm, light->_VP_inf_norm, ctx->_EyeZDir);

-	    NORMALIZE_3FV( light->_h_inf_norm );

-	 }

-	 light->_VP_inf_spot_attenuation = 1.0;

-      }

-      else {

-         /* positional light w/ homogeneous coordinate, divide by W */

-         GLfloat wInv = (GLfloat)1.0 / light->_Position[3];

-         light->_Position[0] *= wInv;

-         light->_Position[1] *= wInv;

-         light->_Position[2] *= wInv;

-      }

-

-      if (light->_Flags & LIGHT_SPOT) {

-         /* Note: we normalize the spot direction now */

-

-	 if (ctx->_NeedEyeCoords) {

-	    COPY_3V( light->_NormSpotDirection, light->SpotDirection );

-            NORMALIZE_3FV( light->_NormSpotDirection );

-	 }

-         else {

-            GLfloat spotDir[3];

-            COPY_3V(spotDir, light->SpotDirection);

-            NORMALIZE_3FV(spotDir);

-	    TRANSFORM_NORMAL( light->_NormSpotDirection,

-			      spotDir,

-			      ctx->ModelviewMatrixStack.Top->m);

-	 }

-

-	 NORMALIZE_3FV( light->_NormSpotDirection );

-

-	 if (!(light->_Flags & LIGHT_POSITIONAL)) {

-	    GLfloat PV_dot_dir = - DOT3(light->_VP_inf_norm,

-					light->_NormSpotDirection);

-

-	    if (PV_dot_dir > light->_CosCutoff) {

-	       double x = PV_dot_dir * (EXP_TABLE_SIZE-1);

-	       int k = (int) x;

-	       light->_VP_inf_spot_attenuation =

-		  (GLfloat) (light->_SpotExpTable[k][0] +

-		   (x-k)*light->_SpotExpTable[k][1]);

-	    }

-	    else {

-	       light->_VP_inf_spot_attenuation = 0;

-            }

-	 }

-      }

-   }

-}

-

-

-

-static void

-update_modelview_scale( struct gl_context *ctx )

-{

-   ctx->_ModelViewInvScale = 1.0F;

-   if (!_math_matrix_is_length_preserving(ctx->ModelviewMatrixStack.Top)) {

-      const GLfloat *m = ctx->ModelviewMatrixStack.Top->inv;

-      GLfloat f = m[2] * m[2] + m[6] * m[6] + m[10] * m[10];

-      if (f < 1e-12) f = 1.0;

-      if (ctx->_NeedEyeCoords)

-	 ctx->_ModelViewInvScale = (GLfloat) INV_SQRTF(f);

-      else

-	 ctx->_ModelViewInvScale = (GLfloat) SQRTF(f);

-   }

-}

-

-

-/**

- * Bring up to date any state that relies on _NeedEyeCoords.

- */

-void

-_mesa_update_tnl_spaces( struct gl_context *ctx, GLuint new_state )

-{

-   const GLuint oldneedeyecoords = ctx->_NeedEyeCoords;

-

-   (void) new_state;

-   ctx->_NeedEyeCoords = GL_FALSE;

-

-   if (ctx->_ForceEyeCoords ||

-       (ctx->Texture._GenFlags & TEXGEN_NEED_EYE_COORD) ||

-       ctx->Point._Attenuated ||

-       ctx->Light._NeedEyeCoords)

-      ctx->_NeedEyeCoords = GL_TRUE;

-

-   if (ctx->Light.Enabled &&

-       !_math_matrix_is_length_preserving(ctx->ModelviewMatrixStack.Top))

-      ctx->_NeedEyeCoords = GL_TRUE;

-

-   /* Check if the truth-value interpretations of the bitfields have

-    * changed:

-    */

-   if (oldneedeyecoords != ctx->_NeedEyeCoords) {

-      /* Recalculate all state that depends on _NeedEyeCoords.

-       */

-      update_modelview_scale(ctx);

-      compute_light_positions( ctx );

-

-      if (ctx->Driver.LightingSpaceChange)

-	 ctx->Driver.LightingSpaceChange( ctx );

-   }

-   else {

-      GLuint new_state2 = ctx->NewState;

-

-      /* Recalculate that same state only if it has been invalidated

-       * by other statechanges.

-       */

-      if (new_state2 & _NEW_MODELVIEW)

-	 update_modelview_scale(ctx);

-

-      if (new_state2 & (_NEW_LIGHT|_NEW_MODELVIEW))

-	 compute_light_positions( ctx );

-   }

-}

-

-

-/**

- * Drivers may need this if the hardware tnl unit doesn't support the

- * light-in-modelspace optimization.  It's also useful for debugging.

- */

-void

-_mesa_allow_light_in_model( struct gl_context *ctx, GLboolean flag )

-{

-   ctx->_ForceEyeCoords = !flag;

-   ctx->NewState |= _NEW_POINT;	/* one of the bits from

-				 * _MESA_NEW_NEED_EYE_COORDS.

-				 */

-}

-

-

-

-/**********************************************************************/

-/*****                      Initialization                        *****/

-/**********************************************************************/

-

-/**

- * Initialize the n-th light data structure.

- *

- * \param l pointer to the gl_light structure to be initialized.

- * \param n number of the light. 

- * \note The defaults for light 0 are different than the other lights.

- */

-static void

-init_light( struct gl_light *l, GLuint n )

-{

-   make_empty_list( l );

-

-   ASSIGN_4V( l->Ambient, 0.0, 0.0, 0.0, 1.0 );

-   if (n==0) {

-      ASSIGN_4V( l->Diffuse, 1.0, 1.0, 1.0, 1.0 );

-      ASSIGN_4V( l->Specular, 1.0, 1.0, 1.0, 1.0 );

-   }

-   else {

-      ASSIGN_4V( l->Diffuse, 0.0, 0.0, 0.0, 1.0 );

-      ASSIGN_4V( l->Specular, 0.0, 0.0, 0.0, 1.0 );

-   }

-   ASSIGN_4V( l->EyePosition, 0.0, 0.0, 1.0, 0.0 );

-   ASSIGN_3V( l->SpotDirection, 0.0, 0.0, -1.0 );

-   l->SpotExponent = 0.0;

-   _mesa_invalidate_spot_exp_table( l );

-   l->SpotCutoff = 180.0;

-   l->_CosCutoffNeg = -1.0f;

-   l->_CosCutoff = 0.0;		/* KW: -ve values not admitted */

-   l->ConstantAttenuation = 1.0;

-   l->LinearAttenuation = 0.0;

-   l->QuadraticAttenuation = 0.0;

-   l->Enabled = GL_FALSE;

-}

-

-

-/**

- * Initialize the light model data structure.

- *

- * \param lm pointer to the gl_lightmodel structure to be initialized.

- */

-static void

-init_lightmodel( struct gl_lightmodel *lm )

-{

-   ASSIGN_4V( lm->Ambient, 0.2F, 0.2F, 0.2F, 1.0F );

-   lm->LocalViewer = GL_FALSE;

-   lm->TwoSide = GL_FALSE;

-   lm->ColorControl = GL_SINGLE_COLOR;

-}

-

-

-/**

- * Initialize the material data structure.

- * 

- * \param m pointer to the gl_material structure to be initialized.

- */

-static void

-init_material( struct gl_material *m )

-{

-   ASSIGN_4V( m->Attrib[MAT_ATTRIB_FRONT_AMBIENT],  0.2F, 0.2F, 0.2F, 1.0F );

-   ASSIGN_4V( m->Attrib[MAT_ATTRIB_FRONT_DIFFUSE],  0.8F, 0.8F, 0.8F, 1.0F );

-   ASSIGN_4V( m->Attrib[MAT_ATTRIB_FRONT_SPECULAR], 0.0F, 0.0F, 0.0F, 1.0F );

-   ASSIGN_4V( m->Attrib[MAT_ATTRIB_FRONT_EMISSION], 0.0F, 0.0F, 0.0F, 1.0F );

-   ASSIGN_4V( m->Attrib[MAT_ATTRIB_FRONT_SHININESS], 0.0F, 0.0F, 0.0F, 0.0F );

-   ASSIGN_4V( m->Attrib[MAT_ATTRIB_FRONT_INDEXES], 0.0F, 1.0F, 1.0F, 0.0F );

- 

-   ASSIGN_4V( m->Attrib[MAT_ATTRIB_BACK_AMBIENT],  0.2F, 0.2F, 0.2F, 1.0F );

-   ASSIGN_4V( m->Attrib[MAT_ATTRIB_BACK_DIFFUSE],  0.8F, 0.8F, 0.8F, 1.0F );

-   ASSIGN_4V( m->Attrib[MAT_ATTRIB_BACK_SPECULAR], 0.0F, 0.0F, 0.0F, 1.0F );

-   ASSIGN_4V( m->Attrib[MAT_ATTRIB_BACK_EMISSION], 0.0F, 0.0F, 0.0F, 1.0F );

-   ASSIGN_4V( m->Attrib[MAT_ATTRIB_BACK_SHININESS], 0.0F, 0.0F, 0.0F, 0.0F );

-   ASSIGN_4V( m->Attrib[MAT_ATTRIB_BACK_INDEXES], 0.0F, 1.0F, 1.0F, 0.0F );

-}

-

-

-/**

- * Initialize all lighting state for the given context.

- */

-void

-_mesa_init_lighting( struct gl_context *ctx )

-{

-   GLuint i;

-

-   /* Lighting group */

-   for (i = 0; i < MAX_LIGHTS; i++) {

-      init_light( &ctx->Light.Light[i], i );

-   }

-   make_empty_list( &ctx->Light.EnabledList );

-

-   init_lightmodel( &ctx->Light.Model );

-   init_material( &ctx->Light.Material );

-   ctx->Light.ShadeModel = GL_SMOOTH;

-   ctx->Light.ProvokingVertex = GL_LAST_VERTEX_CONVENTION_EXT;

-   ctx->Light.Enabled = GL_FALSE;

-   ctx->Light.ColorMaterialFace = GL_FRONT_AND_BACK;

-   ctx->Light.ColorMaterialMode = GL_AMBIENT_AND_DIFFUSE;

-   ctx->Light.ColorMaterialBitmask = _mesa_material_bitmask( ctx,

-                                               GL_FRONT_AND_BACK,

-                                               GL_AMBIENT_AND_DIFFUSE, ~0,

-                                               NULL );

-

-   ctx->Light.ColorMaterialEnabled = GL_FALSE;

-   ctx->Light.ClampVertexColor = GL_TRUE;

-

-   /* Lighting miscellaneous */

-   ctx->_ShineTabList = MALLOC_STRUCT( gl_shine_tab );

-   make_empty_list( ctx->_ShineTabList );

-   /* Allocate 10 (arbitrary) shininess lookup tables */

-   for (i = 0 ; i < 10 ; i++) {

-      struct gl_shine_tab *s = MALLOC_STRUCT( gl_shine_tab );

-      s->shininess = -1;

-      s->refcount = 0;

-      insert_at_tail( ctx->_ShineTabList, s );

-   }

-

-   /* Miscellaneous */

-   ctx->Light._NeedEyeCoords = GL_FALSE;

-   ctx->_NeedEyeCoords = GL_FALSE;

-   ctx->_ForceEyeCoords = GL_FALSE;

-   ctx->_ModelViewInvScale = 1.0;

-}

-

-

-/**

- * Deallocate malloc'd lighting state attached to given context.

- */

-void

-_mesa_free_lighting_data( struct gl_context *ctx )

-{

-   struct gl_shine_tab *s, *tmps;

-

-   /* Free lighting shininess exponentiation table */

-   foreach_s( s, tmps, ctx->_ShineTabList ) {

-      free( s );

-   }

-   free( ctx->_ShineTabList );

-}

+/*
+ * Mesa 3-D graphics library
+ * Version:  7.5
+ *
+ * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
+ * Copyright (C) 2009  VMware, Inc.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+#include "glheader.h"
+#include "imports.h"
+#include "context.h"
+#include "enums.h"
+#include "light.h"
+#include "macros.h"
+#include "simple_list.h"
+#include "mtypes.h"
+#include "math/m_matrix.h"
+
+
+void GLAPIENTRY
+_mesa_ShadeModel( GLenum mode )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (MESA_VERBOSE & VERBOSE_API)
+      _mesa_debug(ctx, "glShadeModel %s\n", _mesa_lookup_enum_by_nr(mode));
+
+   if (mode != GL_FLAT && mode != GL_SMOOTH) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glShadeModel");
+      return;
+   }
+
+   if (ctx->Light.ShadeModel == mode)
+      return;
+
+   FLUSH_VERTICES(ctx, _NEW_LIGHT);
+   ctx->Light.ShadeModel = mode;
+   if (mode == GL_FLAT)
+      ctx->_TriangleCaps |= DD_FLATSHADE;
+   else
+      ctx->_TriangleCaps &= ~DD_FLATSHADE;
+
+   if (ctx->Driver.ShadeModel)
+      ctx->Driver.ShadeModel( ctx, mode );
+}
+
+
+/**
+ * Set the provoking vertex (the vertex which specifies the prim's
+ * color when flat shading) to either the first or last vertex of the
+ * triangle or line.
+ */
+void GLAPIENTRY
+_mesa_ProvokingVertexEXT(GLenum mode)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (MESA_VERBOSE&VERBOSE_API)
+      _mesa_debug(ctx, "glProvokingVertexEXT 0x%x\n", mode);
+
+   switch (mode) {
+   case GL_FIRST_VERTEX_CONVENTION_EXT:
+   case GL_LAST_VERTEX_CONVENTION_EXT:
+      break;
+   default:
+      _mesa_error(ctx, GL_INVALID_ENUM, "glProvokingVertexEXT(0x%x)", mode);
+      return;
+   }
+
+   if (ctx->Light.ProvokingVertex == mode)
+      return;
+
+   FLUSH_VERTICES(ctx, _NEW_LIGHT);
+   ctx->Light.ProvokingVertex = mode;
+}
+
+
+/**
+ * Helper function called by _mesa_Lightfv and _mesa_PopAttrib to set
+ * per-light state.
+ * For GL_POSITION and GL_SPOT_DIRECTION the params position/direction
+ * will have already been transformed by the modelview matrix!
+ * Also, all error checking should have already been done.
+ */
+void
+_mesa_light(struct gl_context *ctx, GLuint lnum, GLenum pname, const GLfloat *params)
+{
+   struct gl_light *light;
+
+   ASSERT(lnum < MAX_LIGHTS);
+   light = &ctx->Light.Light[lnum];
+
+   switch (pname) {
+   case GL_AMBIENT:
+      if (TEST_EQ_4V(light->Ambient, params))
+	 return;
+      FLUSH_VERTICES(ctx, _NEW_LIGHT);
+      COPY_4V( light->Ambient, params );
+      break;
+   case GL_DIFFUSE:
+      if (TEST_EQ_4V(light->Diffuse, params))
+	 return;
+      FLUSH_VERTICES(ctx, _NEW_LIGHT);
+      COPY_4V( light->Diffuse, params );
+      break;
+   case GL_SPECULAR:
+      if (TEST_EQ_4V(light->Specular, params))
+	 return;
+      FLUSH_VERTICES(ctx, _NEW_LIGHT);
+      COPY_4V( light->Specular, params );
+      break;
+   case GL_POSITION:
+      /* NOTE: position has already been transformed by ModelView! */
+      if (TEST_EQ_4V(light->EyePosition, params))
+	 return;
+      FLUSH_VERTICES(ctx, _NEW_LIGHT);
+      COPY_4V(light->EyePosition, params);
+      if (light->EyePosition[3] != 0.0F)
+	 light->_Flags |= LIGHT_POSITIONAL;
+      else
+	 light->_Flags &= ~LIGHT_POSITIONAL;
+      break;
+   case GL_SPOT_DIRECTION:
+      /* NOTE: Direction already transformed by inverse ModelView! */
+      if (TEST_EQ_3V(light->SpotDirection, params))
+	 return;
+      FLUSH_VERTICES(ctx, _NEW_LIGHT);
+      COPY_3V(light->SpotDirection, params);
+      break;
+   case GL_SPOT_EXPONENT:
+      ASSERT(params[0] >= 0.0);
+      ASSERT(params[0] <= ctx->Const.MaxSpotExponent);
+      if (light->SpotExponent == params[0])
+	 return;
+      FLUSH_VERTICES(ctx, _NEW_LIGHT);
+      light->SpotExponent = params[0];
+      _mesa_invalidate_spot_exp_table(light);
+      break;
+   case GL_SPOT_CUTOFF:
+      ASSERT(params[0] == 180.0 || (params[0] >= 0.0 && params[0] <= 90.0));
+      if (light->SpotCutoff == params[0])
+         return;
+      FLUSH_VERTICES(ctx, _NEW_LIGHT);
+      light->SpotCutoff = params[0];
+      light->_CosCutoffNeg = (GLfloat) (cos(light->SpotCutoff * DEG2RAD));
+      if (light->_CosCutoffNeg < 0)
+         light->_CosCutoff = 0;
+      else
+         light->_CosCutoff = light->_CosCutoffNeg;
+      if (light->SpotCutoff != 180.0F)
+         light->_Flags |= LIGHT_SPOT;
+      else
+         light->_Flags &= ~LIGHT_SPOT;
+      break;
+   case GL_CONSTANT_ATTENUATION:
+      ASSERT(params[0] >= 0.0);
+      if (light->ConstantAttenuation == params[0])
+	 return;
+      FLUSH_VERTICES(ctx, _NEW_LIGHT);
+      light->ConstantAttenuation = params[0];
+      break;
+   case GL_LINEAR_ATTENUATION:
+      ASSERT(params[0] >= 0.0);
+      if (light->LinearAttenuation == params[0])
+	 return;
+      FLUSH_VERTICES(ctx, _NEW_LIGHT);
+      light->LinearAttenuation = params[0];
+      break;
+   case GL_QUADRATIC_ATTENUATION:
+      ASSERT(params[0] >= 0.0);
+      if (light->QuadraticAttenuation == params[0])
+	 return;
+      FLUSH_VERTICES(ctx, _NEW_LIGHT);
+      light->QuadraticAttenuation = params[0];
+      break;
+   default:
+      _mesa_problem(ctx, "Unexpected pname in _mesa_light()");
+      return;
+   }
+
+   if (ctx->Driver.Lightfv)
+      ctx->Driver.Lightfv( ctx, GL_LIGHT0 + lnum, pname, params );
+}
+
+
+void GLAPIENTRY
+_mesa_Lightf( GLenum light, GLenum pname, GLfloat param )
+{
+   GLfloat fparam[4];
+   fparam[0] = param;
+   fparam[1] = fparam[2] = fparam[3] = 0.0F;
+   _mesa_Lightfv( light, pname, fparam );
+}
+
+
+void GLAPIENTRY
+_mesa_Lightfv( GLenum light, GLenum pname, const GLfloat *params )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   GLint i = (GLint) (light - GL_LIGHT0);
+   GLfloat temp[4];
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (i < 0 || i >= (GLint) ctx->Const.MaxLights) {
+      _mesa_error( ctx, GL_INVALID_ENUM, "glLight(light=0x%x)", light );
+      return;
+   }
+
+   /* do particular error checks, transformations */
+   switch (pname) {
+   case GL_AMBIENT:
+   case GL_DIFFUSE:
+   case GL_SPECULAR:
+      /* nothing */
+      break;
+   case GL_POSITION:
+      /* transform position by ModelView matrix */
+      TRANSFORM_POINT(temp, ctx->ModelviewMatrixStack.Top->m, params);
+      params = temp;
+      break;
+   case GL_SPOT_DIRECTION:
+      /* transform direction by inverse modelview */
+      if (_math_matrix_is_dirty(ctx->ModelviewMatrixStack.Top)) {
+	 _math_matrix_analyse(ctx->ModelviewMatrixStack.Top);
+      }
+      TRANSFORM_DIRECTION(temp, params, ctx->ModelviewMatrixStack.Top->m);
+      params = temp;
+      break;
+   case GL_SPOT_EXPONENT:
+      if (params[0] < 0.0 || params[0] > ctx->Const.MaxSpotExponent) {
+	 _mesa_error(ctx, GL_INVALID_VALUE, "glLight");
+	 return;
+      }
+      break;
+   case GL_SPOT_CUTOFF:
+      if ((params[0] < 0.0 || params[0] > 90.0) && params[0] != 180.0) {
+	 _mesa_error(ctx, GL_INVALID_VALUE, "glLight");
+	 return;
+      }
+      break;
+   case GL_CONSTANT_ATTENUATION:
+      if (params[0] < 0.0) {
+	 _mesa_error(ctx, GL_INVALID_VALUE, "glLight");
+	 return;
+      }
+      break;
+   case GL_LINEAR_ATTENUATION:
+      if (params[0] < 0.0) {
+	 _mesa_error(ctx, GL_INVALID_VALUE, "glLight");
+	 return;
+      }
+      break;
+   case GL_QUADRATIC_ATTENUATION:
+      if (params[0] < 0.0) {
+	 _mesa_error(ctx, GL_INVALID_VALUE, "glLight");
+	 return;
+      }
+      break;
+   default:
+      _mesa_error(ctx, GL_INVALID_ENUM, "glLight(pname=0x%x)", pname);
+      return;
+   }
+
+   _mesa_light(ctx, i, pname, params);
+}
+
+
+void GLAPIENTRY
+_mesa_Lighti( GLenum light, GLenum pname, GLint param )
+{
+   GLint iparam[4];
+   iparam[0] = param;
+   iparam[1] = iparam[2] = iparam[3] = 0;
+   _mesa_Lightiv( light, pname, iparam );
+}
+
+
+void GLAPIENTRY
+_mesa_Lightiv( GLenum light, GLenum pname, const GLint *params )
+{
+   GLfloat fparam[4];
+
+   switch (pname) {
+      case GL_AMBIENT:
+      case GL_DIFFUSE:
+      case GL_SPECULAR:
+         fparam[0] = INT_TO_FLOAT( params[0] );
+         fparam[1] = INT_TO_FLOAT( params[1] );
+         fparam[2] = INT_TO_FLOAT( params[2] );
+         fparam[3] = INT_TO_FLOAT( params[3] );
+         break;
+      case GL_POSITION:
+         fparam[0] = (GLfloat) params[0];
+         fparam[1] = (GLfloat) params[1];
+         fparam[2] = (GLfloat) params[2];
+         fparam[3] = (GLfloat) params[3];
+         break;
+      case GL_SPOT_DIRECTION:
+         fparam[0] = (GLfloat) params[0];
+         fparam[1] = (GLfloat) params[1];
+         fparam[2] = (GLfloat) params[2];
+         break;
+      case GL_SPOT_EXPONENT:
+      case GL_SPOT_CUTOFF:
+      case GL_CONSTANT_ATTENUATION:
+      case GL_LINEAR_ATTENUATION:
+      case GL_QUADRATIC_ATTENUATION:
+         fparam[0] = (GLfloat) params[0];
+         break;
+      default:
+         /* error will be caught later in gl_Lightfv */
+         ;
+   }
+
+   _mesa_Lightfv( light, pname, fparam );
+}
+
+
+
+void GLAPIENTRY
+_mesa_GetLightfv( GLenum light, GLenum pname, GLfloat *params )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   GLint l = (GLint) (light - GL_LIGHT0);
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (l < 0 || l >= (GLint) ctx->Const.MaxLights) {
+      _mesa_error( ctx, GL_INVALID_ENUM, "glGetLightfv" );
+      return;
+   }
+
+   switch (pname) {
+      case GL_AMBIENT:
+         COPY_4V( params, ctx->Light.Light[l].Ambient );
+         break;
+      case GL_DIFFUSE:
+         COPY_4V( params, ctx->Light.Light[l].Diffuse );
+         break;
+      case GL_SPECULAR:
+         COPY_4V( params, ctx->Light.Light[l].Specular );
+         break;
+      case GL_POSITION:
+         COPY_4V( params, ctx->Light.Light[l].EyePosition );
+         break;
+      case GL_SPOT_DIRECTION:
+         COPY_3V( params, ctx->Light.Light[l].SpotDirection );
+         break;
+      case GL_SPOT_EXPONENT:
+         params[0] = ctx->Light.Light[l].SpotExponent;
+         break;
+      case GL_SPOT_CUTOFF:
+         params[0] = ctx->Light.Light[l].SpotCutoff;
+         break;
+      case GL_CONSTANT_ATTENUATION:
+         params[0] = ctx->Light.Light[l].ConstantAttenuation;
+         break;
+      case GL_LINEAR_ATTENUATION:
+         params[0] = ctx->Light.Light[l].LinearAttenuation;
+         break;
+      case GL_QUADRATIC_ATTENUATION:
+         params[0] = ctx->Light.Light[l].QuadraticAttenuation;
+         break;
+      default:
+         _mesa_error( ctx, GL_INVALID_ENUM, "glGetLightfv" );
+         break;
+   }
+}
+
+
+void GLAPIENTRY
+_mesa_GetLightiv( GLenum light, GLenum pname, GLint *params )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   GLint l = (GLint) (light - GL_LIGHT0);
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (l < 0 || l >= (GLint) ctx->Const.MaxLights) {
+      _mesa_error( ctx, GL_INVALID_ENUM, "glGetLightiv" );
+      return;
+   }
+
+   switch (pname) {
+      case GL_AMBIENT:
+         params[0] = FLOAT_TO_INT(ctx->Light.Light[l].Ambient[0]);
+         params[1] = FLOAT_TO_INT(ctx->Light.Light[l].Ambient[1]);
+         params[2] = FLOAT_TO_INT(ctx->Light.Light[l].Ambient[2]);
+         params[3] = FLOAT_TO_INT(ctx->Light.Light[l].Ambient[3]);
+         break;
+      case GL_DIFFUSE:
+         params[0] = FLOAT_TO_INT(ctx->Light.Light[l].Diffuse[0]);
+         params[1] = FLOAT_TO_INT(ctx->Light.Light[l].Diffuse[1]);
+         params[2] = FLOAT_TO_INT(ctx->Light.Light[l].Diffuse[2]);
+         params[3] = FLOAT_TO_INT(ctx->Light.Light[l].Diffuse[3]);
+         break;
+      case GL_SPECULAR:
+         params[0] = FLOAT_TO_INT(ctx->Light.Light[l].Specular[0]);
+         params[1] = FLOAT_TO_INT(ctx->Light.Light[l].Specular[1]);
+         params[2] = FLOAT_TO_INT(ctx->Light.Light[l].Specular[2]);
+         params[3] = FLOAT_TO_INT(ctx->Light.Light[l].Specular[3]);
+         break;
+      case GL_POSITION:
+         params[0] = (GLint) ctx->Light.Light[l].EyePosition[0];
+         params[1] = (GLint) ctx->Light.Light[l].EyePosition[1];
+         params[2] = (GLint) ctx->Light.Light[l].EyePosition[2];
+         params[3] = (GLint) ctx->Light.Light[l].EyePosition[3];
+         break;
+      case GL_SPOT_DIRECTION:
+         params[0] = (GLint) ctx->Light.Light[l].SpotDirection[0];
+         params[1] = (GLint) ctx->Light.Light[l].SpotDirection[1];
+         params[2] = (GLint) ctx->Light.Light[l].SpotDirection[2];
+         break;
+      case GL_SPOT_EXPONENT:
+         params[0] = (GLint) ctx->Light.Light[l].SpotExponent;
+         break;
+      case GL_SPOT_CUTOFF:
+         params[0] = (GLint) ctx->Light.Light[l].SpotCutoff;
+         break;
+      case GL_CONSTANT_ATTENUATION:
+         params[0] = (GLint) ctx->Light.Light[l].ConstantAttenuation;
+         break;
+      case GL_LINEAR_ATTENUATION:
+         params[0] = (GLint) ctx->Light.Light[l].LinearAttenuation;
+         break;
+      case GL_QUADRATIC_ATTENUATION:
+         params[0] = (GLint) ctx->Light.Light[l].QuadraticAttenuation;
+         break;
+      default:
+         _mesa_error( ctx, GL_INVALID_ENUM, "glGetLightiv" );
+         break;
+   }
+}
+
+
+
+/**********************************************************************/
+/***                        Light Model                             ***/
+/**********************************************************************/
+
+
+void GLAPIENTRY
+_mesa_LightModelfv( GLenum pname, const GLfloat *params )
+{
+   GLenum newenum;
+   GLboolean newbool;
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   switch (pname) {
+      case GL_LIGHT_MODEL_AMBIENT:
+         if (TEST_EQ_4V( ctx->Light.Model.Ambient, params ))
+	    return;
+	 FLUSH_VERTICES(ctx, _NEW_LIGHT);
+         COPY_4V( ctx->Light.Model.Ambient, params );
+         break;
+      case GL_LIGHT_MODEL_LOCAL_VIEWER:
+         newbool = (params[0]!=0.0);
+	 if (ctx->Light.Model.LocalViewer == newbool)
+	    return;
+	 FLUSH_VERTICES(ctx, _NEW_LIGHT);
+	 ctx->Light.Model.LocalViewer = newbool;
+         break;
+      case GL_LIGHT_MODEL_TWO_SIDE:
+         newbool = (params[0]!=0.0);
+	 if (ctx->Light.Model.TwoSide == newbool)
+	    return;
+	 FLUSH_VERTICES(ctx, _NEW_LIGHT);
+	 ctx->Light.Model.TwoSide = newbool;
+         if (ctx->Light.Enabled && ctx->Light.Model.TwoSide)
+            ctx->_TriangleCaps |= DD_TRI_LIGHT_TWOSIDE;
+         else
+            ctx->_TriangleCaps &= ~DD_TRI_LIGHT_TWOSIDE;
+         break;
+      case GL_LIGHT_MODEL_COLOR_CONTROL:
+         if (params[0] == (GLfloat) GL_SINGLE_COLOR)
+	    newenum = GL_SINGLE_COLOR;
+         else if (params[0] == (GLfloat) GL_SEPARATE_SPECULAR_COLOR)
+	    newenum = GL_SEPARATE_SPECULAR_COLOR;
+	 else {
+            _mesa_error( ctx, GL_INVALID_ENUM, "glLightModel(param=0x0%x)",
+                         (GLint) params[0] );
+	    return;
+         }
+	 if (ctx->Light.Model.ColorControl == newenum)
+	    return;
+	 FLUSH_VERTICES(ctx, _NEW_LIGHT);
+	 ctx->Light.Model.ColorControl = newenum;
+         break;
+      default:
+         _mesa_error( ctx, GL_INVALID_ENUM, "glLightModel(pname=0x%x)", pname );
+         break;
+   }
+
+   if (ctx->Driver.LightModelfv)
+      ctx->Driver.LightModelfv( ctx, pname, params );
+}
+
+
+void GLAPIENTRY
+_mesa_LightModeliv( GLenum pname, const GLint *params )
+{
+   GLfloat fparam[4];
+
+   switch (pname) {
+      case GL_LIGHT_MODEL_AMBIENT:
+         fparam[0] = INT_TO_FLOAT( params[0] );
+         fparam[1] = INT_TO_FLOAT( params[1] );
+         fparam[2] = INT_TO_FLOAT( params[2] );
+         fparam[3] = INT_TO_FLOAT( params[3] );
+         break;
+      case GL_LIGHT_MODEL_LOCAL_VIEWER:
+      case GL_LIGHT_MODEL_TWO_SIDE:
+      case GL_LIGHT_MODEL_COLOR_CONTROL:
+         fparam[0] = (GLfloat) params[0];
+         break;
+      default:
+         /* Error will be caught later in gl_LightModelfv */
+         ASSIGN_4V(fparam, 0.0F, 0.0F, 0.0F, 0.0F);
+   }
+   _mesa_LightModelfv( pname, fparam );
+}
+
+
+void GLAPIENTRY
+_mesa_LightModeli( GLenum pname, GLint param )
+{
+   GLint iparam[4];
+   iparam[0] = param;
+   iparam[1] = iparam[2] = iparam[3] = 0;
+   _mesa_LightModeliv( pname, iparam );
+}
+
+
+void GLAPIENTRY
+_mesa_LightModelf( GLenum pname, GLfloat param )
+{
+   GLfloat fparam[4];
+   fparam[0] = param;
+   fparam[1] = fparam[2] = fparam[3] = 0.0F;
+   _mesa_LightModelfv( pname, fparam );
+}
+
+
+
+/********** MATERIAL **********/
+
+
+/*
+ * Given a face and pname value (ala glColorMaterial), compute a bitmask
+ * of the targeted material values.
+ */
+GLuint
+_mesa_material_bitmask( struct gl_context *ctx, GLenum face, GLenum pname,
+                        GLuint legal, const char *where )
+{
+   GLuint bitmask = 0;
+
+   /* Make a bitmask indicating what material attribute(s) we're updating */
+   switch (pname) {
+      case GL_EMISSION:
+         bitmask |= MAT_BIT_FRONT_EMISSION | MAT_BIT_BACK_EMISSION;
+         break;
+      case GL_AMBIENT:
+         bitmask |= MAT_BIT_FRONT_AMBIENT | MAT_BIT_BACK_AMBIENT;
+         break;
+      case GL_DIFFUSE:
+         bitmask |= MAT_BIT_FRONT_DIFFUSE | MAT_BIT_BACK_DIFFUSE;
+         break;
+      case GL_SPECULAR:
+         bitmask |= MAT_BIT_FRONT_SPECULAR | MAT_BIT_BACK_SPECULAR;
+         break;
+      case GL_SHININESS:
+         bitmask |= MAT_BIT_FRONT_SHININESS | MAT_BIT_BACK_SHININESS;
+         break;
+      case GL_AMBIENT_AND_DIFFUSE:
+         bitmask |= MAT_BIT_FRONT_AMBIENT | MAT_BIT_BACK_AMBIENT;
+         bitmask |= MAT_BIT_FRONT_DIFFUSE | MAT_BIT_BACK_DIFFUSE;
+         break;
+      case GL_COLOR_INDEXES:
+         bitmask |= MAT_BIT_FRONT_INDEXES  | MAT_BIT_BACK_INDEXES;
+         break;
+      default:
+         _mesa_error( ctx, GL_INVALID_ENUM, "%s", where );
+         return 0;
+   }
+
+   if (face==GL_FRONT) {
+      bitmask &= FRONT_MATERIAL_BITS;
+   }
+   else if (face==GL_BACK) {
+      bitmask &= BACK_MATERIAL_BITS;
+   }
+   else if (face != GL_FRONT_AND_BACK) {
+      _mesa_error( ctx, GL_INVALID_ENUM, "%s", where );
+      return 0;
+   }
+
+   if (bitmask & ~legal) {
+      _mesa_error( ctx, GL_INVALID_ENUM, "%s", where );
+      return 0;
+   }
+
+   return bitmask;
+}
+
+
+
+/* Perform a straight copy between materials.
+ */
+void
+_mesa_copy_materials( struct gl_material *dst,
+                      const struct gl_material *src,
+                      GLuint bitmask )
+{
+   int i;
+
+   for (i = 0 ; i < MAT_ATTRIB_MAX ; i++) 
+      if (bitmask & (1<<i))
+	 COPY_4FV( dst->Attrib[i], src->Attrib[i] );
+}
+
+
+
+/* Update derived values following a change in ctx->Light.Material
+ */
+void
+_mesa_update_material( struct gl_context *ctx, GLuint bitmask )
+{
+   struct gl_light *light, *list = &ctx->Light.EnabledList;
+   GLfloat (*mat)[4] = ctx->Light.Material.Attrib;
+
+   if (MESA_VERBOSE & VERBOSE_MATERIAL) 
+      _mesa_debug(ctx, "_mesa_update_material, mask 0x%x\n", bitmask);
+
+   if (!bitmask)
+      return;
+
+   /* update material ambience */
+   if (bitmask & MAT_BIT_FRONT_AMBIENT) {
+      foreach (light, list) {
+         SCALE_3V( light->_MatAmbient[0], light->Ambient, 
+		   mat[MAT_ATTRIB_FRONT_AMBIENT]);
+      }
+   }
+
+   if (bitmask & MAT_BIT_BACK_AMBIENT) {
+      foreach (light, list) {
+         SCALE_3V( light->_MatAmbient[1], light->Ambient, 
+		   mat[MAT_ATTRIB_BACK_AMBIENT]);
+      }
+   }
+
+   /* update BaseColor = emission + scene's ambience * material's ambience */
+   if (bitmask & (MAT_BIT_FRONT_EMISSION | MAT_BIT_FRONT_AMBIENT)) {
+      COPY_3V( ctx->Light._BaseColor[0], mat[MAT_ATTRIB_FRONT_EMISSION] );
+      ACC_SCALE_3V( ctx->Light._BaseColor[0], mat[MAT_ATTRIB_FRONT_AMBIENT],
+		    ctx->Light.Model.Ambient );
+   }
+
+   if (bitmask & (MAT_BIT_BACK_EMISSION | MAT_BIT_BACK_AMBIENT)) {
+      COPY_3V( ctx->Light._BaseColor[1], mat[MAT_ATTRIB_BACK_EMISSION] );
+      ACC_SCALE_3V( ctx->Light._BaseColor[1], mat[MAT_ATTRIB_BACK_AMBIENT],
+		    ctx->Light.Model.Ambient );
+   }
+
+   /* update material diffuse values */
+   if (bitmask & MAT_BIT_FRONT_DIFFUSE) {
+      foreach (light, list) {
+	 SCALE_3V( light->_MatDiffuse[0], light->Diffuse, 
+		   mat[MAT_ATTRIB_FRONT_DIFFUSE] );
+      }
+   }
+
+   if (bitmask & MAT_BIT_BACK_DIFFUSE) {
+      foreach (light, list) {
+	 SCALE_3V( light->_MatDiffuse[1], light->Diffuse, 
+		   mat[MAT_ATTRIB_BACK_DIFFUSE] );
+      }
+   }
+
+   /* update material specular values */
+   if (bitmask & MAT_BIT_FRONT_SPECULAR) {
+      foreach (light, list) {
+	 SCALE_3V( light->_MatSpecular[0], light->Specular, 
+		   mat[MAT_ATTRIB_FRONT_SPECULAR]);
+      }
+   }
+
+   if (bitmask & MAT_BIT_BACK_SPECULAR) {
+      foreach (light, list) {
+	 SCALE_3V( light->_MatSpecular[1], light->Specular,
+		   mat[MAT_ATTRIB_BACK_SPECULAR]);
+      }
+   }
+
+   if (bitmask & MAT_BIT_FRONT_SHININESS) {
+      _mesa_invalidate_shine_table( ctx, 0 );
+   }
+
+   if (bitmask & MAT_BIT_BACK_SHININESS) {
+      _mesa_invalidate_shine_table( ctx, 1 );
+   }
+}
+
+
+/*
+ * Update the current materials from the given rgba color
+ * according to the bitmask in ColorMaterialBitmask, which is
+ * set by glColorMaterial().
+ */
+void
+_mesa_update_color_material( struct gl_context *ctx, const GLfloat color[4] )
+{
+   GLuint bitmask = ctx->Light.ColorMaterialBitmask;
+   struct gl_material *mat = &ctx->Light.Material;
+   int i;
+
+   for (i = 0 ; i < MAT_ATTRIB_MAX ; i++) 
+      if (bitmask & (1<<i))
+	 COPY_4FV( mat->Attrib[i], color );
+
+   _mesa_update_material( ctx, bitmask );
+}
+
+
+void GLAPIENTRY
+_mesa_ColorMaterial( GLenum face, GLenum mode )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   GLuint bitmask;
+   GLuint legal = (MAT_BIT_FRONT_EMISSION | MAT_BIT_BACK_EMISSION |
+		   MAT_BIT_FRONT_SPECULAR | MAT_BIT_BACK_SPECULAR |
+		   MAT_BIT_FRONT_DIFFUSE  | MAT_BIT_BACK_DIFFUSE  |
+		   MAT_BIT_FRONT_AMBIENT  | MAT_BIT_BACK_AMBIENT);
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (MESA_VERBOSE&VERBOSE_API)
+      _mesa_debug(ctx, "glColorMaterial %s %s\n",
+                  _mesa_lookup_enum_by_nr(face),
+                  _mesa_lookup_enum_by_nr(mode));
+
+   bitmask = _mesa_material_bitmask(ctx, face, mode, legal, "glColorMaterial");
+
+   if (ctx->Light.ColorMaterialBitmask == bitmask &&
+       ctx->Light.ColorMaterialFace == face &&
+       ctx->Light.ColorMaterialMode == mode)
+      return;
+
+   FLUSH_VERTICES(ctx, _NEW_LIGHT);
+   ctx->Light.ColorMaterialBitmask = bitmask;
+   ctx->Light.ColorMaterialFace = face;
+   ctx->Light.ColorMaterialMode = mode;
+
+   if (ctx->Light.ColorMaterialEnabled) {
+      FLUSH_CURRENT( ctx, 0 );
+      _mesa_update_color_material(ctx,ctx->Current.Attrib[VERT_ATTRIB_COLOR0]);
+   }
+
+   if (ctx->Driver.ColorMaterial)
+      ctx->Driver.ColorMaterial( ctx, face, mode );
+}
+
+
+void GLAPIENTRY
+_mesa_GetMaterialfv( GLenum face, GLenum pname, GLfloat *params )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   GLuint f;
+   GLfloat (*mat)[4] = ctx->Light.Material.Attrib;
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); /* update materials */
+
+   FLUSH_CURRENT(ctx, 0); /* update ctx->Light.Material from vertex buffer */
+
+   if (face==GL_FRONT) {
+      f = 0;
+   }
+   else if (face==GL_BACK) {
+      f = 1;
+   }
+   else {
+      _mesa_error( ctx, GL_INVALID_ENUM, "glGetMaterialfv(face)" );
+      return;
+   }
+
+   switch (pname) {
+      case GL_AMBIENT:
+         COPY_4FV( params, mat[MAT_ATTRIB_AMBIENT(f)] );
+         break;
+      case GL_DIFFUSE:
+         COPY_4FV( params, mat[MAT_ATTRIB_DIFFUSE(f)] );
+	 break;
+      case GL_SPECULAR:
+         COPY_4FV( params, mat[MAT_ATTRIB_SPECULAR(f)] );
+	 break;
+      case GL_EMISSION:
+	 COPY_4FV( params, mat[MAT_ATTRIB_EMISSION(f)] );
+	 break;
+      case GL_SHININESS:
+	 *params = mat[MAT_ATTRIB_SHININESS(f)][0];
+	 break;
+      case GL_COLOR_INDEXES:
+	 params[0] = mat[MAT_ATTRIB_INDEXES(f)][0];
+	 params[1] = mat[MAT_ATTRIB_INDEXES(f)][1];
+	 params[2] = mat[MAT_ATTRIB_INDEXES(f)][2];
+	 break;
+      default:
+         _mesa_error( ctx, GL_INVALID_ENUM, "glGetMaterialfv(pname)" );
+   }
+}
+
+
+void GLAPIENTRY
+_mesa_GetMaterialiv( GLenum face, GLenum pname, GLint *params )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   GLuint f;
+   GLfloat (*mat)[4] = ctx->Light.Material.Attrib;
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); /* update materials */
+
+   FLUSH_CURRENT(ctx, 0); /* update ctx->Light.Material from vertex buffer */
+
+   if (face==GL_FRONT) {
+      f = 0;
+   }
+   else if (face==GL_BACK) {
+      f = 1;
+   }
+   else {
+      _mesa_error( ctx, GL_INVALID_ENUM, "glGetMaterialiv(face)" );
+      return;
+   }
+   switch (pname) {
+      case GL_AMBIENT:
+         params[0] = FLOAT_TO_INT( mat[MAT_ATTRIB_AMBIENT(f)][0] );
+         params[1] = FLOAT_TO_INT( mat[MAT_ATTRIB_AMBIENT(f)][1] );
+         params[2] = FLOAT_TO_INT( mat[MAT_ATTRIB_AMBIENT(f)][2] );
+         params[3] = FLOAT_TO_INT( mat[MAT_ATTRIB_AMBIENT(f)][3] );
+         break;
+      case GL_DIFFUSE:
+         params[0] = FLOAT_TO_INT( mat[MAT_ATTRIB_DIFFUSE(f)][0] );
+         params[1] = FLOAT_TO_INT( mat[MAT_ATTRIB_DIFFUSE(f)][1] );
+         params[2] = FLOAT_TO_INT( mat[MAT_ATTRIB_DIFFUSE(f)][2] );
+         params[3] = FLOAT_TO_INT( mat[MAT_ATTRIB_DIFFUSE(f)][3] );
+	 break;
+      case GL_SPECULAR:
+         params[0] = FLOAT_TO_INT( mat[MAT_ATTRIB_SPECULAR(f)][0] );
+         params[1] = FLOAT_TO_INT( mat[MAT_ATTRIB_SPECULAR(f)][1] );
+         params[2] = FLOAT_TO_INT( mat[MAT_ATTRIB_SPECULAR(f)][2] );
+         params[3] = FLOAT_TO_INT( mat[MAT_ATTRIB_SPECULAR(f)][3] );
+	 break;
+      case GL_EMISSION:
+         params[0] = FLOAT_TO_INT( mat[MAT_ATTRIB_EMISSION(f)][0] );
+         params[1] = FLOAT_TO_INT( mat[MAT_ATTRIB_EMISSION(f)][1] );
+         params[2] = FLOAT_TO_INT( mat[MAT_ATTRIB_EMISSION(f)][2] );
+         params[3] = FLOAT_TO_INT( mat[MAT_ATTRIB_EMISSION(f)][3] );
+	 break;
+      case GL_SHININESS:
+         *params = IROUND( mat[MAT_ATTRIB_SHININESS(f)][0] );
+	 break;
+      case GL_COLOR_INDEXES:
+	 params[0] = IROUND( mat[MAT_ATTRIB_INDEXES(f)][0] );
+	 params[1] = IROUND( mat[MAT_ATTRIB_INDEXES(f)][1] );
+	 params[2] = IROUND( mat[MAT_ATTRIB_INDEXES(f)][2] );
+	 break;
+      default:
+         _mesa_error( ctx, GL_INVALID_ENUM, "glGetMaterialfv(pname)" );
+   }
+}
+
+
+
+/**********************************************************************/
+/*****                  Lighting computation                      *****/
+/**********************************************************************/
+
+
+/*
+ * Notes:
+ *   When two-sided lighting is enabled we compute the color (or index)
+ *   for both the front and back side of the primitive.  Then, when the
+ *   orientation of the facet is later learned, we can determine which
+ *   color (or index) to use for rendering.
+ *
+ *   KW: We now know orientation in advance and only shade for
+ *       the side or sides which are actually required.
+ *
+ * Variables:
+ *   n = normal vector
+ *   V = vertex position
+ *   P = light source position
+ *   Pe = (0,0,0,1)
+ *
+ * Precomputed:
+ *   IF P[3]==0 THEN
+ *       // light at infinity
+ *       IF local_viewer THEN
+ *           _VP_inf_norm = unit vector from V to P      // Precompute
+ *       ELSE
+ *           // eye at infinity
+ *           _h_inf_norm = Normalize( VP + <0,0,1> )     // Precompute
+ *       ENDIF
+ *   ENDIF
+ *
+ * Functions:
+ *   Normalize( v ) = normalized vector v
+ *   Magnitude( v ) = length of vector v
+ */
+
+
+
+/*
+ * Whenever the spotlight exponent for a light changes we must call
+ * this function to recompute the exponent lookup table.
+ */
+void
+_mesa_invalidate_spot_exp_table( struct gl_light *l )
+{
+   l->_SpotExpTable[0][0] = -1;
+}
+
+
+static void
+validate_spot_exp_table( struct gl_light *l )
+{
+   GLint i;
+   GLdouble exponent = l->SpotExponent;
+   GLdouble tmp = 0;
+   GLint clamp = 0;
+
+   l->_SpotExpTable[0][0] = 0.0;
+
+   for (i = EXP_TABLE_SIZE - 1; i > 0 ;i--) {
+      if (clamp == 0) {
+	 tmp = pow(i / (GLdouble) (EXP_TABLE_SIZE - 1), exponent);
+	 if (tmp < FLT_MIN * 100.0) {
+	    tmp = 0.0;
+	    clamp = 1;
+	 }
+      }
+      l->_SpotExpTable[i][0] = (GLfloat) tmp;
+   }
+   for (i = 0; i < EXP_TABLE_SIZE - 1; i++) {
+      l->_SpotExpTable[i][1] = (l->_SpotExpTable[i+1][0] -
+				l->_SpotExpTable[i][0]);
+   }
+   l->_SpotExpTable[EXP_TABLE_SIZE-1][1] = 0.0;
+}
+
+
+
+/* Calculate a new shine table.  Doing this here saves a branch in
+ * lighting, and the cost of doing it early may be partially offset
+ * by keeping a MRU cache of shine tables for various shine values.
+ */
+void
+_mesa_invalidate_shine_table( struct gl_context *ctx, GLuint side )
+{
+   ASSERT(side < 2);
+   if (ctx->_ShineTable[side])
+      ctx->_ShineTable[side]->refcount--;
+   ctx->_ShineTable[side] = NULL;
+}
+
+
+static void
+validate_shine_table( struct gl_context *ctx, GLuint side, GLfloat shininess )
+{
+   struct gl_shine_tab *list = ctx->_ShineTabList;
+   struct gl_shine_tab *s;
+
+   ASSERT(side < 2);
+
+   foreach(s, list)
+      if ( s->shininess == shininess )
+	 break;
+
+   if (s == list) {
+      GLint j;
+      GLfloat *m;
+
+      foreach(s, list)
+	 if (s->refcount == 0)
+	    break;
+
+      m = s->tab;
+      m[0] = 0.0;
+      if (shininess == 0.0) {
+	 for (j = 1 ; j <= SHINE_TABLE_SIZE ; j++)
+	    m[j] = 1.0;
+      }
+      else {
+	 for (j = 1 ; j < SHINE_TABLE_SIZE ; j++) {
+            GLdouble t, x = j / (GLfloat) (SHINE_TABLE_SIZE - 1);
+            if (x < 0.005) /* underflow check */
+               x = 0.005;
+            t = pow(x, shininess);
+	    if (t > 1e-20)
+	       m[j] = (GLfloat) t;
+	    else
+	       m[j] = 0.0;
+	 }
+	 m[SHINE_TABLE_SIZE] = 1.0;
+      }
+
+      s->shininess = shininess;
+   }
+
+   if (ctx->_ShineTable[side])
+      ctx->_ShineTable[side]->refcount--;
+
+   ctx->_ShineTable[side] = s;
+   move_to_tail( list, s );
+   s->refcount++;
+}
+
+
+void
+_mesa_validate_all_lighting_tables( struct gl_context *ctx )
+{
+   GLuint i;
+   GLfloat shininess;
+   
+   shininess = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_SHININESS][0];
+   if (!ctx->_ShineTable[0] || ctx->_ShineTable[0]->shininess != shininess)
+      validate_shine_table( ctx, 0, shininess );
+
+   shininess = ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_SHININESS][0];
+   if (!ctx->_ShineTable[1] || ctx->_ShineTable[1]->shininess != shininess)
+      validate_shine_table( ctx, 1, shininess );
+
+   for (i = 0; i < ctx->Const.MaxLights; i++)
+      if (ctx->Light.Light[i]._SpotExpTable[0][0] == -1)
+	 validate_spot_exp_table( &ctx->Light.Light[i] );
+}
+
+
+/**
+ * Examine current lighting parameters to determine if the optimized lighting
+ * function can be used.
+ * Also, precompute some lighting values such as the products of light
+ * source and material ambient, diffuse and specular coefficients.
+ */
+void
+_mesa_update_lighting( struct gl_context *ctx )
+{
+   struct gl_light *light;
+   ctx->Light._NeedEyeCoords = GL_FALSE;
+   ctx->Light._Flags = 0;
+
+   if (!ctx->Light.Enabled)
+      return;
+
+   foreach(light, &ctx->Light.EnabledList) {
+      ctx->Light._Flags |= light->_Flags;
+   }
+
+   ctx->Light._NeedVertices =
+      ((ctx->Light._Flags & (LIGHT_POSITIONAL|LIGHT_SPOT)) ||
+       ctx->Light.Model.ColorControl == GL_SEPARATE_SPECULAR_COLOR ||
+       ctx->Light.Model.LocalViewer);
+
+   ctx->Light._NeedEyeCoords = ((ctx->Light._Flags & LIGHT_POSITIONAL) ||
+				ctx->Light.Model.LocalViewer);
+
+   /* XXX: This test is overkill & needs to be fixed both for software and
+    * hardware t&l drivers.  The above should be sufficient & should
+    * be tested to verify this.
+    */
+   if (ctx->Light._NeedVertices)
+      ctx->Light._NeedEyeCoords = GL_TRUE;
+
+   /* Precompute some shading values.  Although we reference
+    * Light.Material here, we can get away without flushing
+    * FLUSH_UPDATE_CURRENT, as when any outstanding material changes
+    * are flushed, they will update the derived state at that time.
+    */
+   if (ctx->Light.Model.TwoSide)
+      _mesa_update_material(ctx,
+			    MAT_BIT_FRONT_EMISSION |
+			    MAT_BIT_FRONT_AMBIENT |
+			    MAT_BIT_FRONT_DIFFUSE |
+			    MAT_BIT_FRONT_SPECULAR |
+			    MAT_BIT_BACK_EMISSION |
+			    MAT_BIT_BACK_AMBIENT |
+			    MAT_BIT_BACK_DIFFUSE |
+			    MAT_BIT_BACK_SPECULAR);
+   else
+      _mesa_update_material(ctx,
+			    MAT_BIT_FRONT_EMISSION |
+			    MAT_BIT_FRONT_AMBIENT |
+			    MAT_BIT_FRONT_DIFFUSE |
+			    MAT_BIT_FRONT_SPECULAR);
+}
+
+
+/**
+ * Update state derived from light position, spot direction.
+ * Called upon:
+ *   _NEW_MODELVIEW
+ *   _NEW_LIGHT
+ *   _TNL_NEW_NEED_EYE_COORDS
+ *
+ * Update on (_NEW_MODELVIEW | _NEW_LIGHT) when lighting is enabled.
+ * Also update on lighting space changes.
+ */
+static void
+compute_light_positions( struct gl_context *ctx )
+{
+   struct gl_light *light;
+   static const GLfloat eye_z[3] = { 0, 0, 1 };
+
+   if (!ctx->Light.Enabled)
+      return;
+
+   if (ctx->_NeedEyeCoords) {
+      COPY_3V( ctx->_EyeZDir, eye_z );
+   }
+   else {
+      TRANSFORM_NORMAL( ctx->_EyeZDir, eye_z, ctx->ModelviewMatrixStack.Top->m );
+   }
+
+   /* Make sure all the light tables are updated before the computation */
+   _mesa_validate_all_lighting_tables(ctx);
+
+   foreach (light, &ctx->Light.EnabledList) {
+
+      if (ctx->_NeedEyeCoords) {
+         /* _Position is in eye coordinate space */
+	 COPY_4FV( light->_Position, light->EyePosition );
+      }
+      else {
+         /* _Position is in object coordinate space */
+	 TRANSFORM_POINT( light->_Position, ctx->ModelviewMatrixStack.Top->inv,
+			  light->EyePosition );
+      }
+
+      if (!(light->_Flags & LIGHT_POSITIONAL)) {
+	 /* VP (VP) = Normalize( Position ) */
+	 COPY_3V( light->_VP_inf_norm, light->_Position );
+	 NORMALIZE_3FV( light->_VP_inf_norm );
+
+	 if (!ctx->Light.Model.LocalViewer) {
+	    /* _h_inf_norm = Normalize( V_to_P + <0,0,1> ) */
+	    ADD_3V( light->_h_inf_norm, light->_VP_inf_norm, ctx->_EyeZDir);
+	    NORMALIZE_3FV( light->_h_inf_norm );
+	 }
+	 light->_VP_inf_spot_attenuation = 1.0;
+      }
+      else {
+         /* positional light w/ homogeneous coordinate, divide by W */
+         GLfloat wInv = (GLfloat)1.0 / light->_Position[3];
+         light->_Position[0] *= wInv;
+         light->_Position[1] *= wInv;
+         light->_Position[2] *= wInv;
+      }
+
+      if (light->_Flags & LIGHT_SPOT) {
+         /* Note: we normalize the spot direction now */
+
+	 if (ctx->_NeedEyeCoords) {
+	    COPY_3V( light->_NormSpotDirection, light->SpotDirection );
+            NORMALIZE_3FV( light->_NormSpotDirection );
+	 }
+         else {
+            GLfloat spotDir[3];
+            COPY_3V(spotDir, light->SpotDirection);
+            NORMALIZE_3FV(spotDir);
+	    TRANSFORM_NORMAL( light->_NormSpotDirection,
+			      spotDir,
+			      ctx->ModelviewMatrixStack.Top->m);
+	 }
+
+	 NORMALIZE_3FV( light->_NormSpotDirection );
+
+	 if (!(light->_Flags & LIGHT_POSITIONAL)) {
+	    GLfloat PV_dot_dir = - DOT3(light->_VP_inf_norm,
+					light->_NormSpotDirection);
+
+	    if (PV_dot_dir > light->_CosCutoff) {
+	       double x = PV_dot_dir * (EXP_TABLE_SIZE-1);
+	       int k = (int) x;
+	       light->_VP_inf_spot_attenuation =
+		  (GLfloat) (light->_SpotExpTable[k][0] +
+		   (x-k)*light->_SpotExpTable[k][1]);
+	    }
+	    else {
+	       light->_VP_inf_spot_attenuation = 0;
+            }
+	 }
+      }
+   }
+}
+
+
+
+static void
+update_modelview_scale( struct gl_context *ctx )
+{
+   ctx->_ModelViewInvScale = 1.0F;
+   if (!_math_matrix_is_length_preserving(ctx->ModelviewMatrixStack.Top)) {
+      const GLfloat *m = ctx->ModelviewMatrixStack.Top->inv;
+      GLfloat f = m[2] * m[2] + m[6] * m[6] + m[10] * m[10];
+      if (f < 1e-12) f = 1.0;
+      if (ctx->_NeedEyeCoords)
+	 ctx->_ModelViewInvScale = (GLfloat) INV_SQRTF(f);
+      else
+	 ctx->_ModelViewInvScale = (GLfloat) SQRTF(f);
+   }
+}
+
+
+/**
+ * Bring up to date any state that relies on _NeedEyeCoords.
+ */
+void
+_mesa_update_tnl_spaces( struct gl_context *ctx, GLuint new_state )
+{
+   const GLuint oldneedeyecoords = ctx->_NeedEyeCoords;
+
+   (void) new_state;
+   ctx->_NeedEyeCoords = GL_FALSE;
+
+   if (ctx->_ForceEyeCoords ||
+       (ctx->Texture._GenFlags & TEXGEN_NEED_EYE_COORD) ||
+       ctx->Point._Attenuated ||
+       ctx->Light._NeedEyeCoords)
+      ctx->_NeedEyeCoords = GL_TRUE;
+
+   if (ctx->Light.Enabled &&
+       !_math_matrix_is_length_preserving(ctx->ModelviewMatrixStack.Top))
+      ctx->_NeedEyeCoords = GL_TRUE;
+
+   /* Check if the truth-value interpretations of the bitfields have
+    * changed:
+    */
+   if (oldneedeyecoords != ctx->_NeedEyeCoords) {
+      /* Recalculate all state that depends on _NeedEyeCoords.
+       */
+      update_modelview_scale(ctx);
+      compute_light_positions( ctx );
+
+      if (ctx->Driver.LightingSpaceChange)
+	 ctx->Driver.LightingSpaceChange( ctx );
+   }
+   else {
+      GLuint new_state2 = ctx->NewState;
+
+      /* Recalculate that same state only if it has been invalidated
+       * by other statechanges.
+       */
+      if (new_state2 & _NEW_MODELVIEW)
+	 update_modelview_scale(ctx);
+
+      if (new_state2 & (_NEW_LIGHT|_NEW_MODELVIEW))
+	 compute_light_positions( ctx );
+   }
+}
+
+
+/**
+ * Drivers may need this if the hardware tnl unit doesn't support the
+ * light-in-modelspace optimization.  It's also useful for debugging.
+ */
+void
+_mesa_allow_light_in_model( struct gl_context *ctx, GLboolean flag )
+{
+   ctx->_ForceEyeCoords = !flag;
+   ctx->NewState |= _NEW_POINT;	/* one of the bits from
+				 * _MESA_NEW_NEED_EYE_COORDS.
+				 */
+}
+
+
+
+/**********************************************************************/
+/*****                      Initialization                        *****/
+/**********************************************************************/
+
+/**
+ * Initialize the n-th light data structure.
+ *
+ * \param l pointer to the gl_light structure to be initialized.
+ * \param n number of the light. 
+ * \note The defaults for light 0 are different than the other lights.
+ */
+static void
+init_light( struct gl_light *l, GLuint n )
+{
+   make_empty_list( l );
+
+   ASSIGN_4V( l->Ambient, 0.0, 0.0, 0.0, 1.0 );
+   if (n==0) {
+      ASSIGN_4V( l->Diffuse, 1.0, 1.0, 1.0, 1.0 );
+      ASSIGN_4V( l->Specular, 1.0, 1.0, 1.0, 1.0 );
+   }
+   else {
+      ASSIGN_4V( l->Diffuse, 0.0, 0.0, 0.0, 1.0 );
+      ASSIGN_4V( l->Specular, 0.0, 0.0, 0.0, 1.0 );
+   }
+   ASSIGN_4V( l->EyePosition, 0.0, 0.0, 1.0, 0.0 );
+   ASSIGN_3V( l->SpotDirection, 0.0, 0.0, -1.0 );
+   l->SpotExponent = 0.0;
+   _mesa_invalidate_spot_exp_table( l );
+   l->SpotCutoff = 180.0;
+   l->_CosCutoffNeg = -1.0f;
+   l->_CosCutoff = 0.0;		/* KW: -ve values not admitted */
+   l->ConstantAttenuation = 1.0;
+   l->LinearAttenuation = 0.0;
+   l->QuadraticAttenuation = 0.0;
+   l->Enabled = GL_FALSE;
+}
+
+
+/**
+ * Initialize the light model data structure.
+ *
+ * \param lm pointer to the gl_lightmodel structure to be initialized.
+ */
+static void
+init_lightmodel( struct gl_lightmodel *lm )
+{
+   ASSIGN_4V( lm->Ambient, 0.2F, 0.2F, 0.2F, 1.0F );
+   lm->LocalViewer = GL_FALSE;
+   lm->TwoSide = GL_FALSE;
+   lm->ColorControl = GL_SINGLE_COLOR;
+}
+
+
+/**
+ * Initialize the material data structure.
+ * 
+ * \param m pointer to the gl_material structure to be initialized.
+ */
+static void
+init_material( struct gl_material *m )
+{
+   ASSIGN_4V( m->Attrib[MAT_ATTRIB_FRONT_AMBIENT],  0.2F, 0.2F, 0.2F, 1.0F );
+   ASSIGN_4V( m->Attrib[MAT_ATTRIB_FRONT_DIFFUSE],  0.8F, 0.8F, 0.8F, 1.0F );
+   ASSIGN_4V( m->Attrib[MAT_ATTRIB_FRONT_SPECULAR], 0.0F, 0.0F, 0.0F, 1.0F );
+   ASSIGN_4V( m->Attrib[MAT_ATTRIB_FRONT_EMISSION], 0.0F, 0.0F, 0.0F, 1.0F );
+   ASSIGN_4V( m->Attrib[MAT_ATTRIB_FRONT_SHININESS], 0.0F, 0.0F, 0.0F, 0.0F );
+   ASSIGN_4V( m->Attrib[MAT_ATTRIB_FRONT_INDEXES], 0.0F, 1.0F, 1.0F, 0.0F );
+ 
+   ASSIGN_4V( m->Attrib[MAT_ATTRIB_BACK_AMBIENT],  0.2F, 0.2F, 0.2F, 1.0F );
+   ASSIGN_4V( m->Attrib[MAT_ATTRIB_BACK_DIFFUSE],  0.8F, 0.8F, 0.8F, 1.0F );
+   ASSIGN_4V( m->Attrib[MAT_ATTRIB_BACK_SPECULAR], 0.0F, 0.0F, 0.0F, 1.0F );
+   ASSIGN_4V( m->Attrib[MAT_ATTRIB_BACK_EMISSION], 0.0F, 0.0F, 0.0F, 1.0F );
+   ASSIGN_4V( m->Attrib[MAT_ATTRIB_BACK_SHININESS], 0.0F, 0.0F, 0.0F, 0.0F );
+   ASSIGN_4V( m->Attrib[MAT_ATTRIB_BACK_INDEXES], 0.0F, 1.0F, 1.0F, 0.0F );
+}
+
+
+/**
+ * Initialize all lighting state for the given context.
+ */
+void
+_mesa_init_lighting( struct gl_context *ctx )
+{
+   GLuint i;
+
+   /* Lighting group */
+   for (i = 0; i < MAX_LIGHTS; i++) {
+      init_light( &ctx->Light.Light[i], i );
+   }
+   make_empty_list( &ctx->Light.EnabledList );
+
+   init_lightmodel( &ctx->Light.Model );
+   init_material( &ctx->Light.Material );
+   ctx->Light.ShadeModel = GL_SMOOTH;
+   ctx->Light.ProvokingVertex = GL_LAST_VERTEX_CONVENTION_EXT;
+   ctx->Light.Enabled = GL_FALSE;
+   ctx->Light.ColorMaterialFace = GL_FRONT_AND_BACK;
+   ctx->Light.ColorMaterialMode = GL_AMBIENT_AND_DIFFUSE;
+   ctx->Light.ColorMaterialBitmask = _mesa_material_bitmask( ctx,
+                                               GL_FRONT_AND_BACK,
+                                               GL_AMBIENT_AND_DIFFUSE, ~0,
+                                               NULL );
+
+   ctx->Light.ColorMaterialEnabled = GL_FALSE;
+   ctx->Light.ClampVertexColor = GL_TRUE;
+
+   /* Lighting miscellaneous */
+   ctx->_ShineTabList = MALLOC_STRUCT( gl_shine_tab );
+   make_empty_list( ctx->_ShineTabList );
+   /* Allocate 10 (arbitrary) shininess lookup tables */
+   for (i = 0 ; i < 10 ; i++) {
+      struct gl_shine_tab *s = MALLOC_STRUCT( gl_shine_tab );
+      s->shininess = -1;
+      s->refcount = 0;
+      insert_at_tail( ctx->_ShineTabList, s );
+   }
+
+   /* Miscellaneous */
+   ctx->Light._NeedEyeCoords = GL_FALSE;
+   ctx->_NeedEyeCoords = GL_FALSE;
+   ctx->_ForceEyeCoords = GL_FALSE;
+   ctx->_ModelViewInvScale = 1.0;
+}
+
+
+/**
+ * Deallocate malloc'd lighting state attached to given context.
+ */
+void
+_mesa_free_lighting_data( struct gl_context *ctx )
+{
+   struct gl_shine_tab *s, *tmps;
+
+   /* Free lighting shininess exponentiation table */
+   foreach_s( s, tmps, ctx->_ShineTabList ) {
+      free( s );
+   }
+   free( ctx->_ShineTabList );
+}
diff --git a/mesalib/src/mesa/main/macros.h b/mesalib/src/mesa/main/macros.h
index 2a849e36a..dbe5b867c 100644
--- a/mesalib/src/mesa/main/macros.h
+++ b/mesalib/src/mesa/main/macros.h
@@ -54,6 +54,10 @@ extern GLfloat _mesa_ubyte_to_float_color_tab[256];
 #define FLOAT_TO_BYTE(X)    ( (((GLint) (255.0F * (X))) - 1) / 2 )
 
 
+/** Convert GLbyte to GLfloat while preserving zero */
+#define BYTE_TO_FLOATZ(B)   ((B) == 0 ? 0.0F : BYTE_TO_FLOAT(B))
+
+
 /** Convert GLbyte in [-128,127] to GLfloat in [-1.0,1.0], texture/fb data */
 #define BYTE_TO_FLOAT_TEX(B)    ((B) == -128 ? -1.0F : (B) * (1.0F/127.0F))
 
@@ -73,6 +77,9 @@ extern GLfloat _mesa_ubyte_to_float_color_tab[256];
 /** Convert GLfloat in [-1.0,1.0] to GLshort in [-32768,32767] */
 #define FLOAT_TO_SHORT(X)   ( (((GLint) (65535.0F * (X))) - 1) / 2 )
 
+/** Convert GLshort to GLfloat while preserving zero */
+#define SHORT_TO_FLOATZ(S)   ((S) == 0 ? 0.0F : SHORT_TO_FLOAT(S))
+
 
 /** Convert GLshort in [-32768,32767] to GLfloat in [-1.0,1.0], texture/fb data */
 #define SHORT_TO_FLOAT_TEX(S)    ((S) == -32768 ? -1.0F : (S) * (1.0F/32767.0F))
@@ -588,19 +595,6 @@ do {				\
  */
 #define LINTERP(T, OUT, IN) ((OUT) + (T) * ((IN) - (OUT)))
 
-/* Can do better with integer math
- */
-#define INTERP_UB( t, dstub, outub, inub )  \
-do {                        \
-   GLfloat inf = UBYTE_TO_FLOAT( inub );    \
-   GLfloat outf = UBYTE_TO_FLOAT( outub );  \
-   GLfloat dstf = LINTERP( t, outf, inf );  \
-   UNCLAMPED_FLOAT_TO_UBYTE( dstub, dstf ); \
-} while (0)
-
-#define INTERP_UI( t, dstui, outui, inui )  \
-   dstui = (GLuint) (GLint) LINTERP( (t), (GLfloat) (outui), (GLfloat) (inui) )
-
 #define INTERP_F( t, dstf, outf, inf )      \
    dstf = LINTERP( t, outf, inf )
 
@@ -619,16 +613,6 @@ do {                        \
    dst[2] = LINTERP( (t), (out)[2], (in)[2] );  \
 } while (0)
 
-#define INTERP_SZ( t, vec, to, out, in, sz )                \
-do {                                    \
-   switch (sz) {                            \
-   case 4: vec[to][3] = LINTERP( (t), (vec)[out][3], (vec)[in][3] );    \
-   case 3: vec[to][2] = LINTERP( (t), (vec)[out][2], (vec)[in][2] );    \
-   case 2: vec[to][1] = LINTERP( (t), (vec)[out][1], (vec)[in][1] );    \
-   case 1: vec[to][0] = LINTERP( (t), (vec)[out][0], (vec)[in][0] );    \
-   }                                    \
-} while(0)
-
 /*@}*/
 
 
@@ -656,9 +640,6 @@ do {                                    \
 #define DOT4( a, b )  ( (a)[0]*(b)[0] + (a)[1]*(b)[1] + \
             (a)[2]*(b)[2] + (a)[3]*(b)[3] )
 
-/** Dot product of two 4-element vectors */
-#define DOT4V(v,a,b,c,d) (v[0]*(a) + v[1]*(b) + v[2]*(c) + v[3]*(d))
-
 
 /** Cross product of two 3-element vectors */
 #define CROSS3(n, u, v)             \
@@ -688,6 +669,10 @@ do {                        \
 #define LEN_SQUARED_2FV( V ) ((V)[0]*(V)[0]+(V)[1]*(V)[1])
 
 
+/** Compute ceiling of integer quotient of A divided by B. */
+#define CEILING( A, B )  ( (A) % (B) == 0 ? (A)/(B) : (A)/(B)+1 )
+
+
 /** casts to silence warnings with some compilers */
 #define ENUM_TO_INT(E)     ((GLint)(E))
 #define ENUM_TO_FLOAT(E)   ((GLfloat)(GLint)(E))
diff --git a/mesalib/src/mesa/main/mtypes.h b/mesalib/src/mesa/main/mtypes.h
index deab97d3e..285ec0783 100644
--- a/mesalib/src/mesa/main/mtypes.h
+++ b/mesalib/src/mesa/main/mtypes.h
@@ -49,18 +49,6 @@ extern "C" {
 
 
 /**
- * Stencil buffer data type.
- */
-#if STENCIL_BITS==8
-   typedef GLubyte GLstencil;
-#elif STENCIL_BITS==16
-   typedef GLushort GLstencil;
-#else
-#  error "illegal number of stencil bits"
-#endif
-
-
-/**
  * \name 64-bit extension of GLbitfield.
  */
 /*@{*/
@@ -2158,6 +2146,16 @@ struct gl_shader
 
    unsigned Version;       /**< GLSL version used for linking */
 
+   unsigned num_samplers;	/**< Number of samplers used by this shader.
+				 * This field is only set post-linking.
+				 */
+   /**
+    * Number of uniform components used by this shader.
+    *
+    * This field is only set post-linking.
+    */
+   unsigned num_uniform_components;
+
    struct exec_list *ir;
    struct glsl_symbol_table *symbols;
 
diff --git a/mesalib/src/mesa/main/pack.c b/mesalib/src/mesa/main/pack.c
index 539a06c9a..6f48a2e7c 100644
--- a/mesalib/src/mesa/main/pack.c
+++ b/mesalib/src/mesa/main/pack.c
@@ -34,6 +34,7 @@
 #include "enums.h"
 #include "image.h"
 #include "imports.h"
+#include "macros.h"
 #include "mtypes.h"
 #include "pack.h"
 #include "pixeltransfer.h"
@@ -43,26 +44,6 @@
 
 
 /**
- * NOTE:
- * Normally, BYTE_TO_FLOAT(0) returns 0.00392  That causes problems when
- * we later convert the float to a packed integer value (such as for
- * GL_RGB5_A1) because we'll wind up with a non-zero value.
- *
- * We redefine the macros here so zero is handled correctly.
- */
-#undef BYTE_TO_FLOAT
-#define BYTE_TO_FLOAT(B)    ((B) == 0 ? 0.0F : ((2.0F * (B) + 1.0F) * (1.0F/255.0F)))
-
-#undef SHORT_TO_FLOAT
-#define SHORT_TO_FLOAT(S)   ((S) == 0 ? 0.0F : ((2.0F * (S) + 1.0F) * (1.0F/65535.0F)))
-
-
-
-/** Compute ceiling of integer quotient of A divided by B. */
-#define CEILING( A, B )  ( (A) % (B) == 0 ? (A)/(B) : (A)/(B)+1 )
-
-
-/**
  * Flip the 8 bits in each byte of the given array.
  *
  * \param p array.
@@ -2507,10 +2488,10 @@ extract_float_rgba(GLuint n, GLfloat rgba[][4],
          PROCESS(aSrc, ACOMP, 1.0F, 255, GLubyte, UBYTE_TO_FLOAT);
          break;
       case GL_BYTE:
-         PROCESS(rSrc, RCOMP, 0.0F,   0, GLbyte, BYTE_TO_FLOAT);
-         PROCESS(gSrc, GCOMP, 0.0F,   0, GLbyte, BYTE_TO_FLOAT);
-         PROCESS(bSrc, BCOMP, 0.0F,   0, GLbyte, BYTE_TO_FLOAT);
-         PROCESS(aSrc, ACOMP, 1.0F, 127, GLbyte, BYTE_TO_FLOAT);
+         PROCESS(rSrc, RCOMP, 0.0F,   0, GLbyte, BYTE_TO_FLOATZ);
+         PROCESS(gSrc, GCOMP, 0.0F,   0, GLbyte, BYTE_TO_FLOATZ);
+         PROCESS(bSrc, BCOMP, 0.0F,   0, GLbyte, BYTE_TO_FLOATZ);
+         PROCESS(aSrc, ACOMP, 1.0F, 127, GLbyte, BYTE_TO_FLOATZ);
          break;
       case GL_UNSIGNED_SHORT:
          PROCESS(rSrc, RCOMP, 0.0F,      0, GLushort, USHORT_TO_FLOAT);
@@ -2519,10 +2500,10 @@ extract_float_rgba(GLuint n, GLfloat rgba[][4],
          PROCESS(aSrc, ACOMP, 1.0F, 0xffff, GLushort, USHORT_TO_FLOAT);
          break;
       case GL_SHORT:
-         PROCESS(rSrc, RCOMP, 0.0F,     0, GLshort, SHORT_TO_FLOAT);
-         PROCESS(gSrc, GCOMP, 0.0F,     0, GLshort, SHORT_TO_FLOAT);
-         PROCESS(bSrc, BCOMP, 0.0F,     0, GLshort, SHORT_TO_FLOAT);
-         PROCESS(aSrc, ACOMP, 1.0F, 32767, GLshort, SHORT_TO_FLOAT);
+         PROCESS(rSrc, RCOMP, 0.0F,     0, GLshort, SHORT_TO_FLOATZ);
+         PROCESS(gSrc, GCOMP, 0.0F,     0, GLshort, SHORT_TO_FLOATZ);
+         PROCESS(bSrc, BCOMP, 0.0F,     0, GLshort, SHORT_TO_FLOATZ);
+         PROCESS(aSrc, ACOMP, 1.0F, 32767, GLshort, SHORT_TO_FLOATZ);
          break;
       case GL_UNSIGNED_INT:
          PROCESS(rSrc, RCOMP, 0.0F,          0, GLuint, UINT_TO_FLOAT);
@@ -4586,10 +4567,10 @@ _mesa_unpack_stencil_span( struct gl_context *ctx, GLuint n,
 
 void
 _mesa_pack_stencil_span( struct gl_context *ctx, GLuint n,
-                         GLenum dstType, GLvoid *dest, const GLstencil *source,
+                         GLenum dstType, GLvoid *dest, const GLubyte *source,
                          const struct gl_pixelstore_attrib *dstPacking )
 {
-   GLstencil *stencil = (GLstencil *) malloc(n * sizeof(GLstencil));
+   GLubyte *stencil = (GLubyte *) malloc(n * sizeof(GLubyte));
 
    if (!stencil) {
       _mesa_error(ctx, GL_OUT_OF_MEMORY, "stencil packing");
@@ -4599,23 +4580,14 @@ _mesa_pack_stencil_span( struct gl_context *ctx, GLuint n,
    if (ctx->Pixel.IndexShift || ctx->Pixel.IndexOffset ||
        ctx->Pixel.MapStencilFlag) {
       /* make a copy of input */
-      memcpy(stencil, source, n * sizeof(GLstencil));
+      memcpy(stencil, source, n * sizeof(GLubyte));
       _mesa_apply_stencil_transfer_ops(ctx, n, stencil);
       source = stencil;
    }
 
    switch (dstType) {
    case GL_UNSIGNED_BYTE:
-      if (sizeof(GLstencil) == 1) {
-         memcpy( dest, source, n );
-      }
-      else {
-         GLubyte *dst = (GLubyte *) dest;
-         GLuint i;
-         for (i=0;i<n;i++) {
-            dst[i] = (GLubyte) source[i];
-         }
-      }
+      memcpy(dest, source, n);
       break;
    case GL_BYTE:
       {
@@ -4834,14 +4806,14 @@ _mesa_unpack_depth_span( struct gl_context *ctx, GLuint n,
     */
    switch (srcType) {
       case GL_BYTE:
-         DEPTH_VALUES(GLbyte, BYTE_TO_FLOAT);
+         DEPTH_VALUES(GLbyte, BYTE_TO_FLOATZ);
          needClamp = GL_TRUE;
          break;
       case GL_UNSIGNED_BYTE:
          DEPTH_VALUES(GLubyte, UBYTE_TO_FLOAT);
          break;
       case GL_SHORT:
-         DEPTH_VALUES(GLshort, SHORT_TO_FLOAT);
+         DEPTH_VALUES(GLshort, SHORT_TO_FLOATZ);
          needClamp = GL_TRUE;
          break;
       case GL_UNSIGNED_SHORT:
@@ -5120,11 +5092,11 @@ void
 _mesa_pack_depth_stencil_span(struct gl_context *ctx,GLuint n,
                               GLenum dstType, GLuint *dest,
                               const GLfloat *depthVals,
-                              const GLstencil *stencilVals,
+                              const GLubyte *stencilVals,
                               const struct gl_pixelstore_attrib *dstPacking)
 {
    GLfloat *depthCopy = (GLfloat *) malloc(n * sizeof(GLfloat));
-   GLstencil *stencilCopy = (GLstencil *) malloc(n * sizeof(GLstencil));
+   GLubyte *stencilCopy = (GLubyte *) malloc(n * sizeof(GLubyte));
    GLuint i;
 
    if (!depthCopy || !stencilCopy) {
@@ -5143,7 +5115,7 @@ _mesa_pack_depth_stencil_span(struct gl_context *ctx,GLuint n,
    if (ctx->Pixel.IndexShift ||
        ctx->Pixel.IndexOffset ||
        ctx->Pixel.MapStencilFlag) {
-      memcpy(stencilCopy, stencilVals, n * sizeof(GLstencil));
+      memcpy(stencilCopy, stencilVals, n * sizeof(GLubyte));
       _mesa_apply_stencil_transfer_ops(ctx, n, stencilCopy);
       stencilVals = stencilCopy;
    }
diff --git a/mesalib/src/mesa/main/pack.h b/mesalib/src/mesa/main/pack.h
index 7a0089c2f..b1853cd59 100644
--- a/mesalib/src/mesa/main/pack.h
+++ b/mesalib/src/mesa/main/pack.h
@@ -113,7 +113,7 @@ _mesa_unpack_stencil_span(struct gl_context *ctx, GLuint n,
 
 extern void
 _mesa_pack_stencil_span(struct gl_context *ctx, GLuint n,
-                        GLenum dstType, GLvoid *dest, const GLstencil *source,
+                        GLenum dstType, GLvoid *dest, const GLubyte *source,
                         const struct gl_pixelstore_attrib *dstPacking);
 
 
@@ -133,7 +133,7 @@ extern void
 _mesa_pack_depth_stencil_span(struct gl_context *ctx,GLuint n,
                               GLenum dstType, GLuint *dest,
                               const GLfloat *depthVals,
-                              const GLstencil *stencilVals,
+                              const GLubyte *stencilVals,
                               const struct gl_pixelstore_attrib *dstPacking);
 
 
diff --git a/mesalib/src/mesa/main/pixeltransfer.c b/mesalib/src/mesa/main/pixeltransfer.c
index 5e881436a..5c167e0a9 100644
--- a/mesalib/src/mesa/main/pixeltransfer.c
+++ b/mesalib/src/mesa/main/pixeltransfer.c
@@ -273,7 +273,7 @@ _mesa_apply_ci_transfer_ops(const struct gl_context *ctx,
  */
 void
 _mesa_apply_stencil_transfer_ops(const struct gl_context *ctx, GLuint n,
-                                 GLstencil stencil[])
+                                 GLubyte stencil[])
 {
    if (ctx->Pixel.IndexShift != 0 || ctx->Pixel.IndexOffset != 0) {
       const GLint offset = ctx->Pixel.IndexOffset;
@@ -300,7 +300,7 @@ _mesa_apply_stencil_transfer_ops(const struct gl_context *ctx, GLuint n,
       GLuint mask = ctx->PixelMaps.StoS.Size - 1;
       GLuint i;
       for (i = 0; i < n; i++) {
-         stencil[i] = (GLstencil)ctx->PixelMaps.StoS.Map[ stencil[i] & mask ];
+         stencil[i] = (GLubyte) ctx->PixelMaps.StoS.Map[ stencil[i] & mask ];
       }
    }
 }
diff --git a/mesalib/src/mesa/main/pixeltransfer.h b/mesalib/src/mesa/main/pixeltransfer.h
index 8af2e9ee2..a8c14757f 100644
--- a/mesalib/src/mesa/main/pixeltransfer.h
+++ b/mesalib/src/mesa/main/pixeltransfer.h
@@ -75,7 +75,7 @@ _mesa_apply_ci_transfer_ops(const struct gl_context *ctx,
 
 extern void
 _mesa_apply_stencil_transfer_ops(const struct gl_context *ctx, GLuint n,
-                                 GLstencil stencil[]);
+                                 GLubyte stencil[]);
 
 
 #endif
diff --git a/mesalib/src/mesa/main/readpix.c b/mesalib/src/mesa/main/readpix.c
index 84c5b2228..86b87534d 100644
--- a/mesalib/src/mesa/main/readpix.c
+++ b/mesalib/src/mesa/main/readpix.c
@@ -30,13 +30,509 @@
 #include "readpix.h"
 #include "framebuffer.h"
 #include "formats.h"
+#include "format_unpack.h"
 #include "image.h"
 #include "mtypes.h"
+#include "pack.h"
 #include "pbo.h"
 #include "state.h"
 
 
 /**
+ * Tries to implement glReadPixels() of GL_DEPTH_COMPONENT using memcpy of the
+ * mapping.
+ */
+static GLboolean
+fast_read_depth_pixels( struct gl_context *ctx,
+			GLint x, GLint y,
+			GLsizei width, GLsizei height,
+			GLenum type, GLvoid *pixels,
+			const struct gl_pixelstore_attrib *packing )
+{
+   struct gl_framebuffer *fb = ctx->ReadBuffer;
+   struct gl_renderbuffer *rb = fb->Attachment[BUFFER_DEPTH].Renderbuffer;
+   GLubyte *map, *dst;
+   int stride, dstStride, j;
+
+   if (ctx->Pixel.DepthScale != 1.0 || ctx->Pixel.DepthBias != 0.0)
+      return GL_FALSE;
+
+   if (packing->SwapBytes)
+      return GL_FALSE;
+
+   if (_mesa_get_format_datatype(rb->Format) != GL_UNSIGNED_INT)
+      return GL_FALSE;
+
+   if (!((type == GL_UNSIGNED_SHORT && rb->Format == MESA_FORMAT_Z16) ||
+	 type == GL_UNSIGNED_INT))
+      return GL_FALSE;
+
+   ctx->Driver.MapRenderbuffer(ctx, rb, x, y, width, height, GL_MAP_READ_BIT,
+			       &map, &stride);
+
+   dstStride = _mesa_image_row_stride(packing, width, GL_DEPTH_COMPONENT, type);
+   dst = (GLubyte *) _mesa_image_address2d(packing, pixels, width, height,
+					   GL_DEPTH_COMPONENT, type, 0, 0);
+
+   for (j = 0; j < height; j++) {
+      if (type == GL_UNSIGNED_INT) {
+	 _mesa_unpack_uint_z_row(rb->Format, width, map, (GLuint *)dst);
+      } else {
+	 ASSERT(type == GL_UNSIGNED_SHORT && rb->Format == MESA_FORMAT_Z16);
+	 memcpy(dst, map, width * 2);
+      }
+
+      map += stride;
+      dst += dstStride;
+   }
+   ctx->Driver.UnmapRenderbuffer(ctx, rb);
+
+   return GL_TRUE;
+}
+
+/**
+ * Read pixels for format=GL_DEPTH_COMPONENT.
+ */
+static void
+read_depth_pixels( struct gl_context *ctx,
+                   GLint x, GLint y,
+                   GLsizei width, GLsizei height,
+                   GLenum type, GLvoid *pixels,
+                   const struct gl_pixelstore_attrib *packing )
+{
+   struct gl_framebuffer *fb = ctx->ReadBuffer;
+   struct gl_renderbuffer *rb = fb->Attachment[BUFFER_DEPTH].Renderbuffer;
+   GLint j;
+   GLubyte *dst, *map;
+   int dstStride, stride;
+
+   if (!rb)
+      return;
+
+   /* clipping should have been done already */
+   ASSERT(x >= 0);
+   ASSERT(y >= 0);
+   ASSERT(x + width <= (GLint) rb->Width);
+   ASSERT(y + height <= (GLint) rb->Height);
+   /* width should never be > MAX_WIDTH since we did clipping earlier */
+   ASSERT(width <= MAX_WIDTH);
+
+   if (fast_read_depth_pixels(ctx, x, y, width, height, type, pixels, packing))
+      return;
+
+   dstStride = _mesa_image_row_stride(packing, width, GL_DEPTH_COMPONENT, type);
+   dst = (GLubyte *) _mesa_image_address2d(packing, pixels, width, height,
+					   GL_DEPTH_COMPONENT, type, 0, 0);
+
+   ctx->Driver.MapRenderbuffer(ctx, rb, x, y, width, height, GL_MAP_READ_BIT,
+			       &map, &stride);
+
+   /* General case (slower) */
+   for (j = 0; j < height; j++, y++) {
+      GLfloat depthValues[MAX_WIDTH];
+      _mesa_unpack_float_z_row(rb->Format, width, map, depthValues);
+      _mesa_pack_depth_span(ctx, width, dst, type, depthValues, packing);
+
+      dst += dstStride;
+      map += stride;
+   }
+
+   ctx->Driver.UnmapRenderbuffer(ctx, rb);
+}
+
+
+/**
+ * Read pixels for format=GL_STENCIL_INDEX.
+ */
+static void
+read_stencil_pixels( struct gl_context *ctx,
+                     GLint x, GLint y,
+                     GLsizei width, GLsizei height,
+                     GLenum type, GLvoid *pixels,
+                     const struct gl_pixelstore_attrib *packing )
+{
+   struct gl_framebuffer *fb = ctx->ReadBuffer;
+   struct gl_renderbuffer *rb = fb->Attachment[BUFFER_STENCIL].Renderbuffer;
+   GLint j;
+   GLubyte *map;
+   GLint stride;
+
+   if (!rb)
+      return;
+
+   /* width should never be > MAX_WIDTH since we did clipping earlier */
+   ASSERT(width <= MAX_WIDTH);
+
+   ctx->Driver.MapRenderbuffer(ctx, rb, x, y, width, height, GL_MAP_READ_BIT,
+			       &map, &stride);
+
+   /* process image row by row */
+   for (j = 0; j < height; j++) {
+      GLvoid *dest;
+      GLubyte stencil[MAX_WIDTH];
+
+      _mesa_unpack_ubyte_stencil_row(rb->Format, width, map, stencil);
+      dest = _mesa_image_address2d(packing, pixels, width, height,
+                                   GL_STENCIL_INDEX, type, j, 0);
+
+      _mesa_pack_stencil_span(ctx, width, type, dest, stencil, packing);
+
+      map += stride;
+   }
+
+   ctx->Driver.UnmapRenderbuffer(ctx, rb);
+}
+
+static GLboolean
+fast_read_rgba_pixels_memcpy( struct gl_context *ctx,
+			      GLint x, GLint y,
+			      GLsizei width, GLsizei height,
+			      GLenum format, GLenum type,
+			      GLvoid *pixels,
+			      const struct gl_pixelstore_attrib *packing,
+			      GLbitfield transferOps )
+{
+   struct gl_renderbuffer *rb = ctx->ReadBuffer->_ColorReadBuffer;
+   GLubyte *dst, *map;
+   int dstStride, stride, j, texelBytes;
+
+   if (!_mesa_format_matches_format_and_type(rb->Format, format, type))
+      return GL_FALSE;
+
+   /* check for things we can't handle here */
+   if (packing->SwapBytes ||
+       packing->LsbFirst) {
+      return GL_FALSE;
+   }
+
+   dstStride = _mesa_image_row_stride(packing, width, format, type);
+   dst = (GLubyte *) _mesa_image_address2d(packing, pixels, width, height,
+					   format, type, 0, 0);
+
+   ctx->Driver.MapRenderbuffer(ctx, rb, x, y, width, height, GL_MAP_READ_BIT,
+			       &map, &stride);
+
+   texelBytes = _mesa_get_format_bytes(rb->Format);
+   for (j = 0; j < height; j++) {
+      memcpy(dst, map, width * texelBytes);
+      dst += dstStride;
+      map += stride;
+   }
+
+   ctx->Driver.UnmapRenderbuffer(ctx, rb);
+
+   return GL_TRUE;
+}
+
+static GLboolean
+slow_read_rgba_pixels( struct gl_context *ctx,
+		       GLint x, GLint y,
+		       GLsizei width, GLsizei height,
+		       GLenum format, GLenum type,
+		       GLvoid *pixels,
+		       const struct gl_pixelstore_attrib *packing,
+		       GLbitfield transferOps )
+{
+   struct gl_renderbuffer *rb = ctx->ReadBuffer->_ColorReadBuffer;
+   const gl_format rbFormat = _mesa_get_srgb_format_linear(rb->Format);
+   union {
+      float f[MAX_WIDTH][4];
+      unsigned int i[MAX_WIDTH][4];
+   } rgba;
+   GLubyte *dst, *map;
+   int dstStride, stride, j;
+
+   dstStride = _mesa_image_row_stride(packing, width, format, type);
+   dst = (GLubyte *) _mesa_image_address2d(packing, pixels, width, height,
+					   format, type, 0, 0);
+
+   ctx->Driver.MapRenderbuffer(ctx, rb, x, y, width, height, GL_MAP_READ_BIT,
+			       &map, &stride);
+
+   for (j = 0; j < height; j++) {
+      if (_mesa_is_integer_format(format)) {
+	 _mesa_unpack_int_rgba_row(rbFormat, width, map, rgba.i);
+	 _mesa_pack_rgba_span_int(ctx, width, rgba.i, format, type, dst);
+      } else {
+	 _mesa_unpack_rgba_row(rbFormat, width, map, rgba.f);
+	 _mesa_pack_rgba_span_float(ctx, width, rgba.f, format, type, dst,
+				    packing, transferOps);
+      }
+      dst += dstStride;
+      map += stride;
+   }
+
+   ctx->Driver.UnmapRenderbuffer(ctx, rb);
+
+   return GL_TRUE;
+}
+
+/*
+ * Read R, G, B, A, RGB, L, or LA pixels.
+ */
+static void
+read_rgba_pixels( struct gl_context *ctx,
+                  GLint x, GLint y,
+                  GLsizei width, GLsizei height,
+                  GLenum format, GLenum type, GLvoid *pixels,
+                  const struct gl_pixelstore_attrib *packing )
+{
+   GLbitfield transferOps = ctx->_ImageTransferState;
+   struct gl_framebuffer *fb = ctx->ReadBuffer;
+   struct gl_renderbuffer *rb = fb->_ColorReadBuffer;
+
+   if (!rb)
+      return;
+
+   if ((ctx->Color._ClampReadColor == GL_TRUE || type != GL_FLOAT) &&
+       !_mesa_is_integer_format(format)) {
+      transferOps |= IMAGE_CLAMP_BIT;
+   }
+
+   if (!transferOps) {
+      /* Try the optimized paths first. */
+      if (fast_read_rgba_pixels_memcpy(ctx, x, y, width, height,
+				       format, type, pixels, packing,
+				       transferOps)) {
+	 return;
+      }
+   }
+
+   slow_read_rgba_pixels(ctx, x, y, width, height,
+			 format, type, pixels, packing, transferOps);
+}
+
+/**
+ * For a packed depth/stencil buffer being read as depth/stencil, just memcpy the
+ * data (possibly swapping 8/24 vs 24/8 as we go).
+ */
+static GLboolean
+fast_read_depth_stencil_pixels(struct gl_context *ctx,
+			       GLint x, GLint y,
+			       GLsizei width, GLsizei height,
+			       GLubyte *dst, int dstStride)
+{
+   struct gl_framebuffer *fb = ctx->ReadBuffer;
+   struct gl_renderbuffer *rb = fb->Attachment[BUFFER_DEPTH].Renderbuffer;
+   struct gl_renderbuffer *stencilRb = fb->Attachment[BUFFER_STENCIL].Renderbuffer;
+   GLubyte *map;
+   int stride, i;
+
+   if (rb != stencilRb)
+      return GL_FALSE;
+
+   if (rb->Format != MESA_FORMAT_Z24_S8 &&
+       rb->Format != MESA_FORMAT_S8_Z24)
+      return GL_FALSE;
+
+   ctx->Driver.MapRenderbuffer(ctx, rb, x, y, width, height, GL_MAP_READ_BIT,
+			       &map, &stride);
+
+   for (i = 0; i < height; i++) {
+      _mesa_unpack_uint_24_8_depth_stencil_row(rb->Format, width,
+					       map, (GLuint *)dst);
+      map += stride;
+      dst += dstStride;
+   }
+
+   ctx->Driver.UnmapRenderbuffer(ctx, rb);
+
+   return GL_TRUE;
+}
+
+
+/**
+ * For non-float-depth and stencil buffers being read as 24/8 depth/stencil,
+ * copy the integer data directly instead of converting depth to float and
+ * re-packing.
+ */
+static GLboolean
+fast_read_depth_stencil_pixels_separate(struct gl_context *ctx,
+					GLint x, GLint y,
+					GLsizei width, GLsizei height,
+					uint32_t *dst, int dstStride)
+{
+   struct gl_framebuffer *fb = ctx->ReadBuffer;
+   struct gl_renderbuffer *depthRb = fb->Attachment[BUFFER_DEPTH].Renderbuffer;
+   struct gl_renderbuffer *stencilRb = fb->Attachment[BUFFER_STENCIL].Renderbuffer;
+   GLubyte *depthMap, *stencilMap;
+   int depthStride, stencilStride, i, j;
+
+   if (_mesa_get_format_datatype(depthRb->Format) != GL_UNSIGNED_INT)
+      return GL_FALSE;
+
+   ctx->Driver.MapRenderbuffer(ctx, depthRb, x, y, width, height,
+			       GL_MAP_READ_BIT, &depthMap, &depthStride);
+   ctx->Driver.MapRenderbuffer(ctx, stencilRb, x, y, width, height,
+			       GL_MAP_READ_BIT, &stencilMap, &stencilStride);
+
+   for (j = 0; j < height; j++) {
+      GLubyte stencilVals[MAX_WIDTH];
+
+      _mesa_unpack_uint_z_row(depthRb->Format, width, depthMap, dst);
+      _mesa_unpack_ubyte_stencil_row(stencilRb->Format, width,
+				     stencilMap, stencilVals);
+
+      for (i = 0; i < width; i++) {
+	 dst[i] = (dst[i] & 0xffffff00) | stencilVals[i];
+      }
+
+      depthMap += depthStride;
+      stencilMap += stencilStride;
+      dst += dstStride / 4;
+   }
+
+   ctx->Driver.UnmapRenderbuffer(ctx, depthRb);
+   ctx->Driver.UnmapRenderbuffer(ctx, stencilRb);
+
+   return GL_TRUE;
+}
+
+static void
+slow_read_depth_stencil_pixels_separate(struct gl_context *ctx,
+					GLint x, GLint y,
+					GLsizei width, GLsizei height,
+					GLenum type,
+					const struct gl_pixelstore_attrib *packing,
+					GLubyte *dst, int dstStride)
+{
+   struct gl_framebuffer *fb = ctx->ReadBuffer;
+   struct gl_renderbuffer *depthRb = fb->Attachment[BUFFER_DEPTH].Renderbuffer;
+   struct gl_renderbuffer *stencilRb = fb->Attachment[BUFFER_STENCIL].Renderbuffer;
+   GLubyte *depthMap, *stencilMap;
+   int depthStride, stencilStride, j;
+
+   /* The depth and stencil buffers might be separate, or a single buffer.
+    * If one buffer, only map it once.
+    */
+   ctx->Driver.MapRenderbuffer(ctx, depthRb, x, y, width, height,
+			       GL_MAP_READ_BIT, &depthMap, &depthStride);
+   if (stencilRb != depthRb) {
+      ctx->Driver.MapRenderbuffer(ctx, stencilRb, x, y, width, height,
+                                  GL_MAP_READ_BIT, &stencilMap,
+                                  &stencilStride);
+   }
+   else {
+      stencilMap = depthMap;
+      stencilStride = depthStride;
+   }
+
+   for (j = 0; j < height; j++) {
+      GLubyte stencilVals[MAX_WIDTH];
+      GLfloat depthVals[MAX_WIDTH];
+
+      _mesa_unpack_float_z_row(depthRb->Format, width, depthMap, depthVals);
+      _mesa_unpack_ubyte_stencil_row(stencilRb->Format, width,
+				     stencilMap, stencilVals);
+
+      _mesa_pack_depth_stencil_span(ctx, width, type, (GLuint *)dst,
+				    depthVals, stencilVals, packing);
+
+      depthMap += depthStride;
+      stencilMap += stencilStride;
+      dst += dstStride;
+   }
+
+   ctx->Driver.UnmapRenderbuffer(ctx, depthRb);
+   if (stencilRb != depthRb) {
+      ctx->Driver.UnmapRenderbuffer(ctx, stencilRb);
+   }
+}
+
+
+/**
+ * Read combined depth/stencil values.
+ * We'll have already done error checking to be sure the expected
+ * depth and stencil buffers really exist.
+ */
+static void
+read_depth_stencil_pixels(struct gl_context *ctx,
+                          GLint x, GLint y,
+                          GLsizei width, GLsizei height,
+                          GLenum type, GLvoid *pixels,
+                          const struct gl_pixelstore_attrib *packing )
+{
+   const GLboolean scaleOrBias
+      = ctx->Pixel.DepthScale != 1.0 || ctx->Pixel.DepthBias != 0.0;
+   const GLboolean stencilTransfer = ctx->Pixel.IndexShift
+      || ctx->Pixel.IndexOffset || ctx->Pixel.MapStencilFlag;
+   GLubyte *dst;
+   int dstStride;
+
+   dst = (GLubyte *) _mesa_image_address2d(packing, pixels,
+					   width, height,
+					   GL_DEPTH_STENCIL_EXT,
+					   type, 0, 0);
+   dstStride = _mesa_image_row_stride(packing, width,
+				      GL_DEPTH_STENCIL_EXT, type);
+
+   /* Fast 24/8 reads. */
+   if (type == GL_UNSIGNED_INT_24_8 &&
+       !scaleOrBias && !stencilTransfer && !packing->SwapBytes) {
+      if (fast_read_depth_stencil_pixels(ctx, x, y, width, height,
+					 dst, dstStride))
+	 return;
+
+      if (fast_read_depth_stencil_pixels_separate(ctx, x, y, width, height,
+						  (uint32_t *)dst, dstStride))
+	 return;
+   }
+
+   slow_read_depth_stencil_pixels_separate(ctx, x, y, width, height,
+					   type, packing,
+					   dst, dstStride);
+}
+
+
+
+/**
+ * Software fallback routine for ctx->Driver.ReadPixels().
+ * By time we get here, all error checking will have been done.
+ */
+void
+_mesa_readpixels(struct gl_context *ctx,
+                 GLint x, GLint y, GLsizei width, GLsizei height,
+                 GLenum format, GLenum type,
+                 const struct gl_pixelstore_attrib *packing,
+                 GLvoid *pixels)
+{
+   struct gl_pixelstore_attrib clippedPacking = *packing;
+
+   if (ctx->NewState)
+      _mesa_update_state(ctx);
+
+   /* Do all needed clipping here, so that we can forget about it later */
+   if (_mesa_clip_readpixels(ctx, &x, &y, &width, &height, &clippedPacking)) {
+
+      pixels = _mesa_map_pbo_dest(ctx, &clippedPacking, pixels);
+
+      if (pixels) {
+         switch (format) {
+         case GL_STENCIL_INDEX:
+            read_stencil_pixels(ctx, x, y, width, height, type, pixels,
+                                &clippedPacking);
+            break;
+         case GL_DEPTH_COMPONENT:
+            read_depth_pixels(ctx, x, y, width, height, type, pixels,
+                              &clippedPacking);
+            break;
+         case GL_DEPTH_STENCIL_EXT:
+            read_depth_stencil_pixels(ctx, x, y, width, height, type, pixels,
+                                      &clippedPacking);
+            break;
+         default:
+            /* all other formats should be color formats */
+            read_rgba_pixels(ctx, x, y, width, height, format, type, pixels,
+                             &clippedPacking);
+         }
+
+         _mesa_unmap_pbo_dest(ctx, &clippedPacking);
+      }
+   }
+}
+
+
+/**
  * Do error checking of the format/type parameters to glReadPixels and
  * glDrawPixels.
  * \param drawing if GL_TRUE do checking for DrawPixels, else do checking
diff --git a/mesalib/src/mesa/main/readpix.h b/mesalib/src/mesa/main/readpix.h
index f6bb3d6e2..6caaf3adc 100644
--- a/mesalib/src/mesa/main/readpix.h
+++ b/mesalib/src/mesa/main/readpix.h
@@ -30,11 +30,20 @@
 #include "glheader.h"
 
 struct gl_context;
+struct gl_pixelstore_attrib;
+
 
 extern GLboolean
 _mesa_error_check_format_type(struct gl_context *ctx, GLenum format, GLenum type,
                               GLboolean drawing);
 
+extern void
+_mesa_readpixels(struct gl_context *ctx,
+                 GLint x, GLint y, GLsizei width, GLsizei height,
+                 GLenum format, GLenum type,
+                 const struct gl_pixelstore_attrib *packing,
+                 GLvoid *pixels);
+
 extern void GLAPIENTRY
 _mesa_ReadPixels( GLint x, GLint y, GLsizei width, GLsizei height,
                   GLenum format, GLenum type, GLvoid *pixels );
diff --git a/mesalib/src/mesa/main/renderbuffer.c b/mesalib/src/mesa/main/renderbuffer.c
index 4415dbd4f..c9a16a989 100644
--- a/mesalib/src/mesa/main/renderbuffer.c
+++ b/mesalib/src/mesa/main/renderbuffer.c
@@ -28,11 +28,6 @@
  * Also, routines for reading/writing software-based renderbuffer data as
  * ubytes, ushorts, uints, etc.
  *
- * The 'alpha8' renderbuffer is interesting.  It's used to add a software-based
- * alpha channel to RGB renderbuffers.  This is done by wrapping the RGB
- * renderbuffer with the alpha renderbuffer.  We can do this because of the
- * OO-nature of renderbuffers.
- *
  * Down the road we'll use this for run-time support of 8, 16 and 32-bit
  * color channels.  For example, Mesa may use 32-bit/float color channels
  * internally (swrast) and use wrapper renderbuffers to convert 32-bit
@@ -1470,18 +1465,6 @@ _mesa_set_renderbuffer_accessors(struct gl_renderbuffer *rb)
       rb->PutMonoValues = put_mono_values_ushort4;
       break;
 
-#if 0
-   case MESA_FORMAT_A8:
-      rb->DataType = GL_UNSIGNED_BYTE;
-      rb->GetValues = get_values_alpha8;
-      rb->PutRow = put_row_alpha8;
-      rb->PutRowRGB = NULL;
-      rb->PutMonoRow = put_mono_row_alpha8;
-      rb->PutValues = put_values_alpha8;
-      rb->PutMonoValues = put_mono_values_alpha8;
-      break;
-#endif
-
    case MESA_FORMAT_S8:
       rb->DataType = GL_UNSIGNED_BYTE;
       rb->GetValues = get_values_ubyte;
@@ -1639,11 +1622,6 @@ _mesa_soft_renderbuffer_storage(struct gl_context *ctx, struct gl_renderbuffer *
       /* for accum buffer */
       rb->Format = MESA_FORMAT_SIGNED_RGBA_16;
       break;
-#if 0
-   case GL_ALPHA8:
-      rb->Format = MESA_FORMAT_A8;
-      break;
-#endif
    case GL_STENCIL_INDEX:
    case GL_STENCIL_INDEX1_EXT:
    case GL_STENCIL_INDEX4_EXT:
@@ -1754,236 +1732,6 @@ _mesa_unmap_soft_renderbuffer(struct gl_context *ctx,
 }
 
 
-/**********************************************************************/
-/**********************************************************************/
-/**********************************************************************/
-
-
-/**
- * Here we utilize the gl_renderbuffer->Wrapper field to put an alpha
- * buffer wrapper around an existing RGB renderbuffer (hw or sw).
- *
- * When PutRow is called (for example), we store the alpha values in
- * this buffer, then pass on the PutRow call to the wrapped RGB
- * buffer.
- */
-
-
-static GLboolean
-alloc_storage_alpha8(struct gl_context *ctx, struct gl_renderbuffer *arb,
-                     GLenum internalFormat, GLuint width, GLuint height)
-{
-   ASSERT(arb != arb->Wrapped);
-   ASSERT(arb->Format == MESA_FORMAT_A8);
-
-   /* first, pass the call to the wrapped RGB buffer */
-   if (!arb->Wrapped->AllocStorage(ctx, arb->Wrapped, internalFormat,
-                                  width, height)) {
-      return GL_FALSE;
-   }
-
-   /* next, resize my alpha buffer */
-   if (arb->Data) {
-      free(arb->Data);
-   }
-
-   arb->Data = malloc(width * height * sizeof(GLubyte));
-   if (arb->Data == NULL) {
-      arb->Width = 0;
-      arb->Height = 0;
-      _mesa_error(ctx, GL_OUT_OF_MEMORY, "software alpha buffer allocation");
-      return GL_FALSE;
-   }
-
-   arb->Width = width;
-   arb->Height = height;
-   arb->RowStride = width;
-
-   return GL_TRUE;
-}
-
-
-/**
- * Delete an alpha_renderbuffer object, as well as the wrapped RGB buffer.
- */
-static void
-delete_renderbuffer_alpha8(struct gl_renderbuffer *arb)
-{
-   if (arb->Data) {
-      free(arb->Data);
-   }
-   ASSERT(arb->Wrapped);
-   ASSERT(arb != arb->Wrapped);
-   arb->Wrapped->Delete(arb->Wrapped);
-   arb->Wrapped = NULL;
-   free(arb);
-}
-
-
-static void *
-get_pointer_alpha8(struct gl_context *ctx, struct gl_renderbuffer *arb,
-                   GLint x, GLint y)
-{
-   return NULL;   /* don't allow direct access! */
-}
-
-
-static void
-get_row_alpha8(struct gl_context *ctx, struct gl_renderbuffer *arb, GLuint count,
-               GLint x, GLint y, void *values)
-{
-   /* NOTE: 'values' is RGBA format! */
-   const GLubyte *src = (const GLubyte *) arb->Data + y * arb->RowStride + x;
-   GLubyte *dst = (GLubyte *) values;
-   GLuint i;
-   ASSERT(arb != arb->Wrapped);
-   ASSERT(arb->DataType == GL_UNSIGNED_BYTE);
-   /* first, pass the call to the wrapped RGB buffer */
-   arb->Wrapped->GetRow(ctx, arb->Wrapped, count, x, y, values);
-   /* second, fill in alpha values from this buffer! */
-   for (i = 0; i < count; i++) {
-      dst[i * 4 + 3] = src[i];
-   }
-}
-
-
-static void
-get_values_alpha8(struct gl_context *ctx, struct gl_renderbuffer *arb, GLuint count,
-                  const GLint x[], const GLint y[], void *values)
-{
-   GLubyte *dst = (GLubyte *) values;
-   GLuint i;
-   ASSERT(arb != arb->Wrapped);
-   ASSERT(arb->DataType == GL_UNSIGNED_BYTE);
-   /* first, pass the call to the wrapped RGB buffer */
-   arb->Wrapped->GetValues(ctx, arb->Wrapped, count, x, y, values);
-   /* second, fill in alpha values from this buffer! */
-   for (i = 0; i < count; i++) {
-      const GLubyte *src = (GLubyte *) arb->Data + y[i] * arb->RowStride + x[i];
-      dst[i * 4 + 3] = *src;
-   }
-}
-
-
-static void
-put_row_alpha8(struct gl_context *ctx, struct gl_renderbuffer *arb, GLuint count,
-               GLint x, GLint y, const void *values, const GLubyte *mask)
-{
-   const GLubyte *src = (const GLubyte *) values;
-   GLubyte *dst = (GLubyte *) arb->Data + y * arb->RowStride + x;
-   GLuint i;
-   ASSERT(arb != arb->Wrapped);
-   ASSERT(arb->DataType == GL_UNSIGNED_BYTE);
-   /* first, pass the call to the wrapped RGB buffer */
-   arb->Wrapped->PutRow(ctx, arb->Wrapped, count, x, y, values, mask);
-   /* second, store alpha in our buffer */
-   for (i = 0; i < count; i++) {
-      if (!mask || mask[i]) {
-         dst[i] = src[i * 4 + 3];
-      }
-   }
-}
-
-
-static void
-put_row_rgb_alpha8(struct gl_context *ctx, struct gl_renderbuffer *arb, GLuint count,
-                   GLint x, GLint y, const void *values, const GLubyte *mask)
-{
-   const GLubyte *src = (const GLubyte *) values;
-   GLubyte *dst = (GLubyte *) arb->Data + y * arb->RowStride + x;
-   GLuint i;
-   ASSERT(arb != arb->Wrapped);
-   ASSERT(arb->DataType == GL_UNSIGNED_BYTE);
-   /* first, pass the call to the wrapped RGB buffer */
-   arb->Wrapped->PutRowRGB(ctx, arb->Wrapped, count, x, y, values, mask);
-   /* second, store alpha in our buffer */
-   for (i = 0; i < count; i++) {
-      if (!mask || mask[i]) {
-         dst[i] = src[i * 4 + 3];
-      }
-   }
-}
-
-
-static void
-put_mono_row_alpha8(struct gl_context *ctx, struct gl_renderbuffer *arb, GLuint count,
-                    GLint x, GLint y, const void *value, const GLubyte *mask)
-{
-   const GLubyte val = ((const GLubyte *) value)[3];
-   GLubyte *dst = (GLubyte *) arb->Data + y * arb->RowStride + x;
-   ASSERT(arb != arb->Wrapped);
-   ASSERT(arb->DataType == GL_UNSIGNED_BYTE);
-   /* first, pass the call to the wrapped RGB buffer */
-   arb->Wrapped->PutMonoRow(ctx, arb->Wrapped, count, x, y, value, mask);
-   /* second, store alpha in our buffer */
-   if (mask) {
-      GLuint i;
-      for (i = 0; i < count; i++) {
-         if (mask[i]) {
-            dst[i] = val;
-         }
-      }
-   }
-   else {
-      memset(dst, val, count);
-   }
-}
-
-
-static void
-put_values_alpha8(struct gl_context *ctx, struct gl_renderbuffer *arb, GLuint count,
-                  const GLint x[], const GLint y[],
-                  const void *values, const GLubyte *mask)
-{
-   const GLubyte *src = (const GLubyte *) values;
-   GLuint i;
-   ASSERT(arb != arb->Wrapped);
-   ASSERT(arb->DataType == GL_UNSIGNED_BYTE);
-   /* first, pass the call to the wrapped RGB buffer */
-   arb->Wrapped->PutValues(ctx, arb->Wrapped, count, x, y, values, mask);
-   /* second, store alpha in our buffer */
-   for (i = 0; i < count; i++) {
-      if (!mask || mask[i]) {
-         GLubyte *dst = (GLubyte *) arb->Data + y[i] * arb->RowStride + x[i];
-         *dst = src[i * 4 + 3];
-      }
-   }
-}
-
-
-static void
-put_mono_values_alpha8(struct gl_context *ctx, struct gl_renderbuffer *arb,
-                       GLuint count, const GLint x[], const GLint y[],
-                       const void *value, const GLubyte *mask)
-{
-   const GLubyte val = ((const GLubyte *) value)[3];
-   GLuint i;
-   ASSERT(arb != arb->Wrapped);
-   ASSERT(arb->DataType == GL_UNSIGNED_BYTE);
-   /* first, pass the call to the wrapped RGB buffer */
-   arb->Wrapped->PutValues(ctx, arb->Wrapped, count, x, y, value, mask);
-   /* second, store alpha in our buffer */
-   for (i = 0; i < count; i++) {
-      if (!mask || mask[i]) {
-         GLubyte *dst = (GLubyte *) arb->Data + y[i] * arb->RowStride + x[i];
-         *dst = val;
-      }
-   }
-}
-
-
-static void
-copy_buffer_alpha8(struct gl_renderbuffer* dst, struct gl_renderbuffer* src)
-{
-   ASSERT(dst->Format == MESA_FORMAT_A8);
-   ASSERT(src->Format == MESA_FORMAT_A8);
-   ASSERT(dst->Width == src->Width);
-   ASSERT(dst->Height == src->Height);
-   ASSERT(dst->RowStride == src->RowStride);
-
-   memcpy(dst->Data, src->Data, dst->RowStride * dst->Height * sizeof(GLubyte));
-}
-
 
 /**********************************************************************/
 /**********************************************************************/
@@ -2148,114 +1896,6 @@ _mesa_add_color_renderbuffers(struct gl_context *ctx, struct gl_framebuffer *fb,
 
 
 /**
- * Add software-based alpha renderbuffers to the given framebuffer.
- * This is a helper routine for device drivers when creating a
- * window system framebuffer (not a user-created render/framebuffer).
- * Once this function is called, you can basically forget about this
- * renderbuffer; core Mesa will handle all the buffer management and
- * rendering!
- */
-GLboolean
-_mesa_add_alpha_renderbuffers(struct gl_context *ctx, struct gl_framebuffer *fb,
-                              GLuint alphaBits,
-                              GLboolean frontLeft, GLboolean backLeft,
-                              GLboolean frontRight, GLboolean backRight)
-{
-   gl_buffer_index b;
-
-   /* for window system framebuffers only! */
-   assert(fb->Name == 0);
-
-   if (alphaBits > 8) {
-      _mesa_problem(ctx,
-                    "Unsupported bit depth in _mesa_add_alpha_renderbuffers");
-      return GL_FALSE;
-   }
-
-   assert(MAX_COLOR_ATTACHMENTS >= 4);
-
-   /* Wrap each of the RGB color buffers with an alpha renderbuffer.
-    */
-   for (b = BUFFER_FRONT_LEFT; b <= BUFFER_BACK_RIGHT; b++) {
-      struct gl_renderbuffer *arb;
-
-      if (b == BUFFER_FRONT_LEFT && !frontLeft)
-         continue;
-      else if (b == BUFFER_BACK_LEFT && !backLeft)
-         continue;
-      else if (b == BUFFER_FRONT_RIGHT && !frontRight)
-         continue;
-      else if (b == BUFFER_BACK_RIGHT && !backRight)
-         continue;
-
-      /* the RGB buffer to wrap must already exist!! */
-      assert(fb->Attachment[b].Renderbuffer);
-
-      /* only GLubyte supported for now */
-      assert(fb->Attachment[b].Renderbuffer->DataType == GL_UNSIGNED_BYTE);
-
-      /* allocate alpha renderbuffer */
-      arb = _mesa_new_renderbuffer(ctx, 0);
-      if (!arb) {
-         _mesa_error(ctx, GL_OUT_OF_MEMORY, "Allocating alpha buffer");
-         return GL_FALSE;
-      }
-
-      /* wrap the alpha renderbuffer around the RGB renderbuffer */
-      arb->Wrapped = fb->Attachment[b].Renderbuffer;
-
-      /* Set up my alphabuffer fields and plug in my functions.
-       * The functions will put/get the alpha values from/to RGBA arrays
-       * and then call the wrapped buffer's functions to handle the RGB
-       * values.
-       */
-      arb->InternalFormat = arb->Wrapped->InternalFormat;
-      arb->Format         = MESA_FORMAT_A8;
-      arb->DataType       = arb->Wrapped->DataType;
-      arb->AllocStorage   = alloc_storage_alpha8;
-      arb->Delete         = delete_renderbuffer_alpha8;
-      arb->GetPointer     = get_pointer_alpha8;
-      arb->GetRow         = get_row_alpha8;
-      arb->GetValues      = get_values_alpha8;
-      arb->PutRow         = put_row_alpha8;
-      arb->PutRowRGB      = put_row_rgb_alpha8;
-      arb->PutMonoRow     = put_mono_row_alpha8;
-      arb->PutValues      = put_values_alpha8;
-      arb->PutMonoValues  = put_mono_values_alpha8;
-
-      /* clear the pointer to avoid assertion/sanity check failure later */
-      fb->Attachment[b].Renderbuffer = NULL;
-
-      /* plug the alpha renderbuffer into the colorbuffer attachment */
-      _mesa_add_renderbuffer(fb, b, arb);
-   }
-
-   return GL_TRUE;
-}
-
-
-/**
- * For framebuffers that use a software alpha channel wrapper
- * created by _mesa_add_alpha_renderbuffer or _mesa_add_soft_renderbuffers,
- * copy the back buffer alpha channel into the front buffer alpha channel.
- */
-void
-_mesa_copy_soft_alpha_renderbuffers(struct gl_context *ctx, struct gl_framebuffer *fb)
-{
-   if (fb->Attachment[BUFFER_FRONT_LEFT].Renderbuffer &&
-       fb->Attachment[BUFFER_BACK_LEFT].Renderbuffer)
-      copy_buffer_alpha8(fb->Attachment[BUFFER_FRONT_LEFT].Renderbuffer,
-                         fb->Attachment[BUFFER_BACK_LEFT].Renderbuffer);
-
-
-   if (fb->Attachment[BUFFER_FRONT_RIGHT].Renderbuffer &&
-       fb->Attachment[BUFFER_BACK_RIGHT].Renderbuffer)
-      copy_buffer_alpha8(fb->Attachment[BUFFER_FRONT_RIGHT].Renderbuffer,
-                         fb->Attachment[BUFFER_BACK_RIGHT].Renderbuffer);
-}
-
-
-/**
  * Add a software-based depth renderbuffer to the given framebuffer.
  * This is a helper routine for device drivers when creating a
  * window system framebuffer (not a user-created render/framebuffer).
@@ -2476,13 +2116,6 @@ _mesa_add_soft_renderbuffers(struct gl_framebuffer *fb,
                                   fb->Visual.numAuxBuffers);
    }
 
-   if (alpha) {
-      assert(fb->Visual.alphaBits > 0);
-      _mesa_add_alpha_renderbuffers(NULL, fb, fb->Visual.alphaBits,
-                                    frontLeft, backLeft,
-                                    frontRight, backRight);
-   }
-
 #if 0
    if (multisample) {
       /* maybe someday */
diff --git a/mesalib/src/mesa/main/renderbuffer.h b/mesalib/src/mesa/main/renderbuffer.h
index cb0d712eb..3194fc3fe 100644
--- a/mesalib/src/mesa/main/renderbuffer.h
+++ b/mesalib/src/mesa/main/renderbuffer.h
@@ -73,15 +73,6 @@ _mesa_add_color_renderbuffers(struct gl_context *ctx, struct gl_framebuffer *fb,
                               GLboolean frontRight, GLboolean backRight);
 
 extern GLboolean
-_mesa_add_alpha_renderbuffers(struct gl_context *ctx, struct gl_framebuffer *fb,
-                              GLuint alphaBits,
-                              GLboolean frontLeft, GLboolean backLeft,
-                              GLboolean frontRight, GLboolean backRight);
-
-extern void
-_mesa_copy_soft_alpha_renderbuffers(struct gl_context *ctx, struct gl_framebuffer *fb);
-
-extern GLboolean
 _mesa_add_depth_renderbuffer(struct gl_context *ctx, struct gl_framebuffer *fb,
                              GLuint depthBits);
 
diff --git a/mesalib/src/mesa/main/uniform_query.cpp b/mesalib/src/mesa/main/uniform_query.cpp
index 5371d6a17..33ba53c2e 100644
--- a/mesalib/src/mesa/main/uniform_query.cpp
+++ b/mesalib/src/mesa/main/uniform_query.cpp
@@ -698,11 +698,27 @@ _mesa_uniform(struct gl_context *ctx, struct gl_shader_program *shProg,
 
 	 prog = shProg->_LinkedShaders[i]->Program;
 
+	 /* If the shader stage doesn't use any samplers, don't bother
+	  * checking if any samplers have changed.
+	  */
+	 if (prog->SamplersUsed == 0)
+	    continue;
+
 	 assert(sizeof(prog->SamplerUnits) == sizeof(shProg->SamplerUnits));
 
-	 if (memcmp(prog->SamplerUnits,
-		    shProg->SamplerUnits,
-		    sizeof(shProg->SamplerUnits)) != 0) {
+	 /* Determine if any of the samplers used by this shader stage have
+	  * been modified.
+	  */
+	 bool changed = false;
+	 for (unsigned j = 0; j < Elements(prog->SamplerUnits); j++) {
+	    if ((prog->SamplersUsed & (1U << j)) != 0
+		&& (prog->SamplerUnits[j] != shProg->SamplerUnits[j])) {
+	       changed = true;
+	       break;
+	    }
+	 }
+
+	 if (changed) {
 	    if (!flushed) {
 	       FLUSH_VERTICES(ctx, _NEW_TEXTURE | _NEW_PROGRAM);
 	       flushed = true;