Added MesaLib-7.6

1 files changed, 824 insertions, 0 deletions

diff --git a/mesalib/src/mesa/tnl/t_vb_lighttmp.h b/mesalib/src/mesa/tnl/t_vb_lighttmp.h
new file mode 100644
index 000000000..124ca3c74
--- /dev/null
+++ b/mesalib/src/mesa/tnl/t_vb_lighttmp.h
@@ -0,0 +1,824 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  5.1
+ *
+ * Copyright (C) 1999-2003  Brian Paul   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.
+ *
+ *
+ * Authors:
+ *    Brian Paul
+ *    Keith Whitwell <keith@tungstengraphics.com>
+ */
+
+
+#if IDX & LIGHT_TWOSIDE
+#  define NR_SIDES 2
+#else
+#  define NR_SIDES 1
+#endif
+
+
+/* define TRACE to trace lighting code */
+/* #define TRACE 1 */
+
+/*
+ * ctx is the current context
+ * VB is the vertex buffer
+ * stage is the lighting stage-private data
+ * input is the vector of eye or object-space vertex coordinates
+ */
+static void TAG(light_rgba_spec)( GLcontext *ctx,
+				  struct vertex_buffer *VB,
+				  struct tnl_pipeline_stage *stage,
+				  GLvector4f *input )
+{
+   struct light_stage_data *store = LIGHT_STAGE_DATA(stage);
+   GLfloat (*base)[3] = ctx->Light._BaseColor;
+   GLfloat sumA[2];
+   GLuint j;
+
+   const GLuint vstride = input->stride;
+   const GLfloat *vertex = (GLfloat *)input->data;
+   const GLuint nstride = VB->AttribPtr[_TNL_ATTRIB_NORMAL]->stride;
+   const GLfloat *normal = (GLfloat *)VB->AttribPtr[_TNL_ATTRIB_NORMAL]->data;
+
+   GLfloat (*Fcolor)[4] = (GLfloat (*)[4]) store->LitColor[0].data;
+   GLfloat (*Fspec)[4] = (GLfloat (*)[4]) store->LitSecondary[0].data;
+#if IDX & LIGHT_TWOSIDE
+   GLfloat (*Bcolor)[4] = (GLfloat (*)[4]) store->LitColor[1].data;
+   GLfloat (*Bspec)[4] = (GLfloat (*)[4]) store->LitSecondary[1].data;
+#endif
+
+   const GLuint nr = VB->Count;
+
+#ifdef TRACE
+   fprintf(stderr, "%s\n", __FUNCTION__ );
+#endif
+
+   VB->ColorPtr[0] = &store->LitColor[0];
+   VB->SecondaryColorPtr[0] = &store->LitSecondary[0];
+   sumA[0] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE][3];
+
+#if IDX & LIGHT_TWOSIDE
+   VB->ColorPtr[1] = &store->LitColor[1];
+   VB->SecondaryColorPtr[1] = &store->LitSecondary[1];
+   sumA[1] = ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_DIFFUSE][3];
+#endif
+
+
+   store->LitColor[0].stride = 16;
+   store->LitColor[1].stride = 16;
+
+   for (j = 0; j < nr; j++,STRIDE_F(vertex,vstride),STRIDE_F(normal,nstride)) {
+      GLfloat sum[2][3], spec[2][3];
+      struct gl_light *light;
+
+#if IDX & LIGHT_MATERIAL
+      update_materials( ctx, store );
+      sumA[0] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE][3];
+#if IDX & LIGHT_TWOSIDE
+      sumA[1] = ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_DIFFUSE][3];
+#endif
+#endif
+
+      COPY_3V(sum[0], base[0]);
+      ZERO_3V(spec[0]);
+
+#if IDX & LIGHT_TWOSIDE
+      COPY_3V(sum[1], base[1]);
+      ZERO_3V(spec[1]);
+#endif
+
+      /* Add contribution from each enabled light source */
+      foreach (light, &ctx->Light.EnabledList) {
+	 GLfloat n_dot_h;
+	 GLfloat correction;
+	 GLint side;
+	 GLfloat contrib[3];
+	 GLfloat attenuation;
+	 GLfloat VP[3];  /* unit vector from vertex to light */
+	 GLfloat n_dot_VP;       /* n dot VP */
+	 GLfloat *h;
+
+	 /* compute VP and attenuation */
+	 if (!(light->_Flags & LIGHT_POSITIONAL)) {
+	    /* directional light */
+	    COPY_3V(VP, light->_VP_inf_norm);
+	    attenuation = light->_VP_inf_spot_attenuation;
+	 }
+	 else {
+	    GLfloat d;     /* distance from vertex to light */
+
+	    SUB_3V(VP, light->_Position, vertex);
+
+	    d = (GLfloat) LEN_3FV( VP );
+
+	    if (d > 1e-6) {
+	       GLfloat invd = 1.0F / d;
+	       SELF_SCALE_SCALAR_3V(VP, invd);
+	    }
+
+	    attenuation = 1.0F / (light->ConstantAttenuation + d *
+				  (light->LinearAttenuation + d *
+				   light->QuadraticAttenuation));
+
+	    /* spotlight attenuation */
+	    if (light->_Flags & LIGHT_SPOT) {
+	       GLfloat PV_dot_dir = - DOT3(VP, light->_NormSpotDirection);
+
+	       if (PV_dot_dir<light->_CosCutoff) {
+		  continue; /* this light makes no contribution */
+	       }
+	       else {
+		  GLdouble x = PV_dot_dir * (EXP_TABLE_SIZE-1);
+		  GLint k = (GLint) x;
+		  GLfloat spot = (GLfloat) (light->_SpotExpTable[k][0]
+				    + (x-k)*light->_SpotExpTable[k][1]);
+		  attenuation *= spot;
+	       }
+	    }
+	 }
+
+	 if (attenuation < 1e-3)
+	    continue;		/* this light makes no contribution */
+
+	 /* Compute dot product or normal and vector from V to light pos */
+	 n_dot_VP = DOT3( normal, VP );
+
+	 /* Which side gets the diffuse & specular terms? */
+	 if (n_dot_VP < 0.0F) {
+	    ACC_SCALE_SCALAR_3V(sum[0], attenuation, light->_MatAmbient[0]);
+#if IDX & LIGHT_TWOSIDE
+	    side = 1;
+	    correction = -1;
+	    n_dot_VP = -n_dot_VP;
+#else
+            continue;
+#endif
+	 }
+         else {
+#if IDX & LIGHT_TWOSIDE
+            ACC_SCALE_SCALAR_3V( sum[1], attenuation, light->_MatAmbient[1]);
+#endif
+	    side = 0;
+	    correction = 1;
+	 }
+
+	 /* diffuse term */
+	 COPY_3V(contrib, light->_MatAmbient[side]);
+	 ACC_SCALE_SCALAR_3V(contrib, n_dot_VP, light->_MatDiffuse[side]);
+	 ACC_SCALE_SCALAR_3V(sum[side], attenuation, contrib );
+
+	 /* specular term - cannibalize VP... */
+	 if (ctx->Light.Model.LocalViewer) {
+	    GLfloat v[3];
+	    COPY_3V(v, vertex);
+	    NORMALIZE_3FV(v);
+	    SUB_3V(VP, VP, v);                /* h = VP + VPe */
+	    h = VP;
+	    NORMALIZE_3FV(h);
+	 }
+	 else if (light->_Flags & LIGHT_POSITIONAL) {
+	    h = VP;
+	    ACC_3V(h, ctx->_EyeZDir);
+	    NORMALIZE_3FV(h);
+	 }
+         else {
+	    h = light->_h_inf_norm;
+	 }
+
+	 n_dot_h = correction * DOT3(normal, h);
+
+	 if (n_dot_h > 0.0F) {
+	    GLfloat spec_coef;
+	    struct gl_shine_tab *tab = ctx->_ShineTable[side];
+	    GET_SHINE_TAB_ENTRY( tab, n_dot_h, spec_coef );
+
+	    if (spec_coef > 1.0e-10) {
+	       spec_coef *= attenuation;
+	       ACC_SCALE_SCALAR_3V( spec[side], spec_coef,
+				    light->_MatSpecular[side]);
+	    }
+	 }
+      } /*loop over lights*/
+
+      COPY_3V( Fcolor[j], sum[0] );
+      COPY_3V( Fspec[j], spec[0] );
+      Fcolor[j][3] = sumA[0];
+
+#if IDX & LIGHT_TWOSIDE
+      COPY_3V( Bcolor[j], sum[1] );
+      COPY_3V( Bspec[j], spec[1] );
+      Bcolor[j][3] = sumA[1];
+#endif
+   }
+}
+
+
+static void TAG(light_rgba)( GLcontext *ctx,
+			     struct vertex_buffer *VB,
+			     struct tnl_pipeline_stage *stage,
+			     GLvector4f *input )
+{
+   struct light_stage_data *store = LIGHT_STAGE_DATA(stage);
+   GLuint j;
+
+   GLfloat (*base)[3] = ctx->Light._BaseColor;
+   GLfloat sumA[2];
+
+   const GLuint vstride = input->stride;
+   const GLfloat *vertex = (GLfloat *) input->data;
+   const GLuint nstride = VB->AttribPtr[_TNL_ATTRIB_NORMAL]->stride;
+   const GLfloat *normal = (GLfloat *)VB->AttribPtr[_TNL_ATTRIB_NORMAL]->data;
+
+   GLfloat (*Fcolor)[4] = (GLfloat (*)[4]) store->LitColor[0].data;
+#if IDX & LIGHT_TWOSIDE
+   GLfloat (*Bcolor)[4] = (GLfloat (*)[4]) store->LitColor[1].data;
+#endif
+
+   const GLuint nr = VB->Count;
+
+#ifdef TRACE
+   fprintf(stderr, "%s\n", __FUNCTION__ );
+#endif
+
+   VB->ColorPtr[0] = &store->LitColor[0];
+   sumA[0] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE][3];
+
+#if IDX & LIGHT_TWOSIDE
+   VB->ColorPtr[1] = &store->LitColor[1];
+   sumA[1] = ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_DIFFUSE][3];
+#endif
+
+   store->LitColor[0].stride = 16;
+   store->LitColor[1].stride = 16;
+
+   for (j = 0; j < nr; j++,STRIDE_F(vertex,vstride),STRIDE_F(normal,nstride)) {
+      GLfloat sum[2][3];
+      struct gl_light *light;
+
+#if IDX & LIGHT_MATERIAL
+      update_materials( ctx, store );
+      sumA[0] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE][3];
+#if IDX & LIGHT_TWOSIDE
+      sumA[1] = ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_DIFFUSE][3];
+#endif
+#endif
+
+      COPY_3V(sum[0], base[0]);
+
+#if IDX & LIGHT_TWOSIDE
+      COPY_3V(sum[1], base[1]);
+#endif
+
+      /* Add contribution from each enabled light source */
+      foreach (light, &ctx->Light.EnabledList) {
+
+	 GLfloat n_dot_h;
+	 GLfloat correction;
+	 GLint side;
+	 GLfloat contrib[3];
+	 GLfloat attenuation = 1.0;
+	 GLfloat VP[3];          /* unit vector from vertex to light */
+	 GLfloat n_dot_VP;       /* n dot VP */
+	 GLfloat *h;
+
+	 /* compute VP and attenuation */
+	 if (!(light->_Flags & LIGHT_POSITIONAL)) {
+	    /* directional light */
+	    COPY_3V(VP, light->_VP_inf_norm);
+	    attenuation = light->_VP_inf_spot_attenuation;
+	 }
+	 else {
+	    GLfloat d;     /* distance from vertex to light */
+
+
+	    SUB_3V(VP, light->_Position, vertex);
+
+	    d = (GLfloat) LEN_3FV( VP );
+
+	    if ( d > 1e-6) {
+	       GLfloat invd = 1.0F / d;
+	       SELF_SCALE_SCALAR_3V(VP, invd);
+	    }
+
+            attenuation = 1.0F / (light->ConstantAttenuation + d *
+                                  (light->LinearAttenuation + d *
+                                   light->QuadraticAttenuation));
+
+	    /* spotlight attenuation */
+	    if (light->_Flags & LIGHT_SPOT) {
+	       GLfloat PV_dot_dir = - DOT3(VP, light->_NormSpotDirection);
+
+	       if (PV_dot_dir<light->_CosCutoff) {
+		  continue; /* this light makes no contribution */
+	       }
+	       else {
+		  GLdouble x = PV_dot_dir * (EXP_TABLE_SIZE-1);
+		  GLint k = (GLint) x;
+		  GLfloat spot = (GLfloat) (light->_SpotExpTable[k][0]
+				  + (x-k)*light->_SpotExpTable[k][1]);
+		  attenuation *= spot;
+	       }
+	    }
+	 }
+
+	 if (attenuation < 1e-3)
+	    continue;		/* this light makes no contribution */
+
+	 /* Compute dot product or normal and vector from V to light pos */
+	 n_dot_VP = DOT3( normal, VP );
+
+	 /* which side are we lighting? */
+	 if (n_dot_VP < 0.0F) {
+	    ACC_SCALE_SCALAR_3V(sum[0], attenuation, light->_MatAmbient[0]);
+#if IDX & LIGHT_TWOSIDE
+	    side = 1;
+	    correction = -1;
+	    n_dot_VP = -n_dot_VP;
+#else
+            continue;
+#endif
+	 }
+         else {
+#if IDX & LIGHT_TWOSIDE
+            ACC_SCALE_SCALAR_3V( sum[1], attenuation, light->_MatAmbient[1]);
+#endif
+	    side = 0;
+	    correction = 1;
+	 }
+
+	 COPY_3V(contrib, light->_MatAmbient[side]);
+
+	 /* diffuse term */
+	 ACC_SCALE_SCALAR_3V(contrib, n_dot_VP, light->_MatDiffuse[side]);
+
+	 /* specular term - cannibalize VP... */
+	 {
+	    if (ctx->Light.Model.LocalViewer) {
+	       GLfloat v[3];
+	       COPY_3V(v, vertex);
+	       NORMALIZE_3FV(v);
+	       SUB_3V(VP, VP, v);                /* h = VP + VPe */
+	       h = VP;
+	       NORMALIZE_3FV(h);
+	    }
+	    else if (light->_Flags & LIGHT_POSITIONAL) {
+	       h = VP;
+	       ACC_3V(h, ctx->_EyeZDir);
+	       NORMALIZE_3FV(h);
+	    }
+            else {
+	       h = light->_h_inf_norm;
+	    }
+
+	    n_dot_h = correction * DOT3(normal, h);
+
+	    if (n_dot_h > 0.0F)
+	    {
+	       GLfloat spec_coef;
+	       struct gl_shine_tab *tab = ctx->_ShineTable[side];
+
+	       GET_SHINE_TAB_ENTRY( tab, n_dot_h, spec_coef );
+
+	       ACC_SCALE_SCALAR_3V( contrib, spec_coef,
+				    light->_MatSpecular[side]);
+	    }
+	 }
+
+	 ACC_SCALE_SCALAR_3V( sum[side], attenuation, contrib );
+      }
+
+      COPY_3V( Fcolor[j], sum[0] );
+      Fcolor[j][3] = sumA[0];
+
+#if IDX & LIGHT_TWOSIDE
+      COPY_3V( Bcolor[j], sum[1] );
+      Bcolor[j][3] = sumA[1];
+#endif
+   }
+}
+
+
+
+
+/* As below, but with just a single light.
+ */
+static void TAG(light_fast_rgba_single)( GLcontext *ctx,
+					 struct vertex_buffer *VB,
+					 struct tnl_pipeline_stage *stage,
+					 GLvector4f *input )
+
+{
+   struct light_stage_data *store = LIGHT_STAGE_DATA(stage);
+   const GLuint nstride = VB->AttribPtr[_TNL_ATTRIB_NORMAL]->stride;
+   const GLfloat *normal = (GLfloat *)VB->AttribPtr[_TNL_ATTRIB_NORMAL]->data;
+   GLfloat (*Fcolor)[4] = (GLfloat (*)[4]) store->LitColor[0].data;
+#if IDX & LIGHT_TWOSIDE
+   GLfloat (*Bcolor)[4] = (GLfloat (*)[4]) store->LitColor[1].data;
+#endif
+   const struct gl_light *light = ctx->Light.EnabledList.next;
+   GLuint j = 0;
+   GLfloat base[2][4];
+#if IDX & LIGHT_MATERIAL
+   const GLuint nr = VB->Count;
+#else
+   const GLuint nr = VB->AttribPtr[_TNL_ATTRIB_NORMAL]->count;
+#endif
+
+#ifdef TRACE
+   fprintf(stderr, "%s\n", __FUNCTION__ );
+#endif
+
+   (void) input;		/* doesn't refer to Eye or Obj */
+
+   VB->ColorPtr[0] = &store->LitColor[0];
+#if IDX & LIGHT_TWOSIDE
+   VB->ColorPtr[1] = &store->LitColor[1];
+#endif
+
+   if (nr > 1) {
+      store->LitColor[0].stride = 16;
+      store->LitColor[1].stride = 16;
+   }
+   else {
+      store->LitColor[0].stride = 0;
+      store->LitColor[1].stride = 0;
+   }
+
+   for (j = 0; j < nr; j++, STRIDE_F(normal,nstride)) {
+
+      GLfloat n_dot_VP;
+
+#if IDX & LIGHT_MATERIAL
+      update_materials( ctx, store );
+#endif
+
+      /* No attenuation, so incoporate _MatAmbient into base color.
+       */
+#if !(IDX & LIGHT_MATERIAL)
+      if ( j == 0 )
+#endif
+      {
+	 COPY_3V(base[0], light->_MatAmbient[0]);
+	 ACC_3V(base[0], ctx->Light._BaseColor[0] );
+	 base[0][3] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE][3];
+
+#if IDX & LIGHT_TWOSIDE
+         COPY_3V(base[1], light->_MatAmbient[1]);
+         ACC_3V(base[1], ctx->Light._BaseColor[1]);
+         base[1][3] = ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_DIFFUSE][3];
+#endif
+      }
+
+      n_dot_VP = DOT3(normal, light->_VP_inf_norm);
+
+      if (n_dot_VP < 0.0F) {
+#if IDX & LIGHT_TWOSIDE
+         GLfloat n_dot_h = -DOT3(normal, light->_h_inf_norm);
+         GLfloat sum[3];
+         COPY_3V(sum, base[1]);
+         ACC_SCALE_SCALAR_3V(sum, -n_dot_VP, light->_MatDiffuse[1]);
+         if (n_dot_h > 0.0F) {
+            GLfloat spec;
+            GET_SHINE_TAB_ENTRY( ctx->_ShineTable[1], n_dot_h, spec );
+            ACC_SCALE_SCALAR_3V(sum, spec, light->_MatSpecular[1]);
+         }
+         COPY_3V(Bcolor[j], sum );
+         Bcolor[j][3] = base[1][3];
+#endif
+	 COPY_4FV(Fcolor[j], base[0]);
+      }
+      else {
+	 GLfloat n_dot_h = DOT3(normal, light->_h_inf_norm);
+	 GLfloat sum[3];
+	 COPY_3V(sum, base[0]);
+	 ACC_SCALE_SCALAR_3V(sum, n_dot_VP, light->_MatDiffuse[0]);
+	 if (n_dot_h > 0.0F) {
+	    GLfloat spec;
+	    GET_SHINE_TAB_ENTRY( ctx->_ShineTable[0], n_dot_h, spec );
+	    ACC_SCALE_SCALAR_3V(sum, spec, light->_MatSpecular[0]);
+
+	 }
+	 COPY_3V(Fcolor[j], sum );
+	 Fcolor[j][3] = base[0][3];
+#if IDX & LIGHT_TWOSIDE
+         COPY_4FV(Bcolor[j], base[1]);
+#endif
+      }
+   }
+}
+
+
+/* Light infinite lights
+ */
+static void TAG(light_fast_rgba)( GLcontext *ctx,
+				  struct vertex_buffer *VB,
+				  struct tnl_pipeline_stage *stage,
+				  GLvector4f *input )
+{
+   struct light_stage_data *store = LIGHT_STAGE_DATA(stage);
+   GLfloat sumA[2];
+   const GLuint nstride = VB->AttribPtr[_TNL_ATTRIB_NORMAL]->stride;
+   const GLfloat *normal = (GLfloat *)VB->AttribPtr[_TNL_ATTRIB_NORMAL]->data;
+   GLfloat (*Fcolor)[4] = (GLfloat (*)[4]) store->LitColor[0].data;
+#if IDX & LIGHT_TWOSIDE
+   GLfloat (*Bcolor)[4] = (GLfloat (*)[4]) store->LitColor[1].data;
+#endif
+   GLuint j = 0;
+#if IDX & LIGHT_MATERIAL
+   const GLuint nr = VB->Count;
+#else
+   const GLuint nr = VB->AttribPtr[_TNL_ATTRIB_NORMAL]->count;
+#endif
+   const struct gl_light *light;
+
+#ifdef TRACE
+   fprintf(stderr, "%s %d\n", __FUNCTION__, nr );
+#endif
+
+   (void) input;
+
+   sumA[0] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE][3];
+   sumA[1] = ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_DIFFUSE][3];
+
+   VB->ColorPtr[0] = &store->LitColor[0];
+#if IDX & LIGHT_TWOSIDE
+   VB->ColorPtr[1] = &store->LitColor[1];
+#endif
+
+   if (nr > 1) {
+      store->LitColor[0].stride = 16;
+      store->LitColor[1].stride = 16;
+   }
+   else {
+      store->LitColor[0].stride = 0;
+      store->LitColor[1].stride = 0;
+   }
+
+   for (j = 0; j < nr; j++, STRIDE_F(normal,nstride)) {
+
+      GLfloat sum[2][3];
+
+#if IDX & LIGHT_MATERIAL
+      update_materials( ctx, store );
+
+      sumA[0] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE][3];
+#if IDX & LIGHT_TWOSIDE
+      sumA[1] = ctx->Light.Material.Attrib[MAT_ATTRIB_BACK_DIFFUSE][3];
+#endif
+#endif
+
+
+      COPY_3V(sum[0], ctx->Light._BaseColor[0]);
+#if IDX & LIGHT_TWOSIDE
+      COPY_3V(sum[1], ctx->Light._BaseColor[1]);
+#endif
+
+      foreach (light, &ctx->Light.EnabledList) {
+	 GLfloat n_dot_h, n_dot_VP, spec;
+
+	 ACC_3V(sum[0], light->_MatAmbient[0]);
+#if IDX & LIGHT_TWOSIDE
+         ACC_3V(sum[1], light->_MatAmbient[1]);
+#endif
+
+	 n_dot_VP = DOT3(normal, light->_VP_inf_norm);
+
+	 if (n_dot_VP > 0.0F) {
+	    ACC_SCALE_SCALAR_3V(sum[0], n_dot_VP, light->_MatDiffuse[0]);
+	    n_dot_h = DOT3(normal, light->_h_inf_norm);
+	    if (n_dot_h > 0.0F) {
+	       struct gl_shine_tab *tab = ctx->_ShineTable[0];
+	       GET_SHINE_TAB_ENTRY( tab, n_dot_h, spec );
+	       ACC_SCALE_SCALAR_3V( sum[0], spec, light->_MatSpecular[0]);
+	    }
+	 }
+#if IDX & LIGHT_TWOSIDE
+         else {
+	    ACC_SCALE_SCALAR_3V(sum[1], -n_dot_VP, light->_MatDiffuse[1]);
+	    n_dot_h = -DOT3(normal, light->_h_inf_norm);
+	    if (n_dot_h > 0.0F) {
+	       struct gl_shine_tab *tab = ctx->_ShineTable[1];
+	       GET_SHINE_TAB_ENTRY( tab, n_dot_h, spec );
+	       ACC_SCALE_SCALAR_3V( sum[1], spec, light->_MatSpecular[1]);
+	    }
+	 }
+#endif
+      }
+
+      COPY_3V( Fcolor[j], sum[0] );
+      Fcolor[j][3] = sumA[0];
+
+#if IDX & LIGHT_TWOSIDE
+      COPY_3V( Bcolor[j], sum[1] );
+      Bcolor[j][3] = sumA[1];
+#endif
+   }
+}
+
+
+
+
+
+/*
+ * Use current lighting/material settings to compute the color indexes
+ * for an array of vertices.
+ * Input:  n - number of vertices to light
+ *         side - 0=use front material, 1=use back material
+ *         vertex - array of [n] vertex position in eye coordinates
+ *         normal - array of [n] surface normal vector
+ * Output:  indexResult - resulting array of [n] color indexes
+ */
+static void TAG(light_ci)( GLcontext *ctx,
+			   struct vertex_buffer *VB,
+			   struct tnl_pipeline_stage *stage,
+			   GLvector4f *input )
+{
+   struct light_stage_data *store = LIGHT_STAGE_DATA(stage);
+   GLuint j;
+   const GLuint vstride = input->stride;
+   const GLfloat *vertex = (GLfloat *) input->data;
+   const GLuint nstride = VB->AttribPtr[_TNL_ATTRIB_NORMAL]->stride;
+   const GLfloat *normal = (GLfloat *)VB->AttribPtr[_TNL_ATTRIB_NORMAL]->data;
+   GLfloat *indexResult[2];
+   const GLuint nr = VB->Count;
+
+#ifdef TRACE
+   fprintf(stderr, "%s\n", __FUNCTION__ );
+#endif
+
+   VB->IndexPtr[0] = &store->LitIndex[0];
+#if IDX & LIGHT_TWOSIDE
+   VB->IndexPtr[1] = &store->LitIndex[1];
+#endif
+
+   indexResult[0] = (GLfloat *)VB->IndexPtr[0]->data;
+#if IDX & LIGHT_TWOSIDE
+   indexResult[1] = (GLfloat *)VB->IndexPtr[1]->data;
+#endif
+
+   /* loop over vertices */
+   for (j=0; j<nr; j++,STRIDE_F(vertex,vstride),STRIDE_F(normal, nstride)) {
+      GLfloat diffuse[2], specular[2];
+      GLuint side = 0;
+      struct gl_light *light;
+
+#if IDX & LIGHT_MATERIAL
+      update_materials( ctx, store );
+#endif
+
+      diffuse[0] = specular[0] = 0.0F;
+
+#if IDX & LIGHT_TWOSIDE
+	 diffuse[1] = specular[1] = 0.0F;
+#endif
+
+      /* Accumulate diffuse and specular from each light source */
+      foreach (light, &ctx->Light.EnabledList) {
+
+	 GLfloat attenuation = 1.0F;
+	 GLfloat VP[3];  /* unit vector from vertex to light */
+	 GLfloat n_dot_VP;  /* dot product of l and n */
+	 GLfloat *h, n_dot_h, correction = 1.0;
+
+	 /* compute l and attenuation */
+	 if (!(light->_Flags & LIGHT_POSITIONAL)) {
+	    /* directional light */
+	    COPY_3V(VP, light->_VP_inf_norm);
+	 }
+	 else {
+	    GLfloat d;     /* distance from vertex to light */
+
+	    SUB_3V(VP, light->_Position, vertex);
+
+	    d = (GLfloat) LEN_3FV( VP );
+	    if ( d > 1e-6) {
+	       GLfloat invd = 1.0F / d;
+	       SELF_SCALE_SCALAR_3V(VP, invd);
+	    }
+
+	    attenuation = 1.0F / (light->ConstantAttenuation + d *
+				  (light->LinearAttenuation + d *
+				   light->QuadraticAttenuation));
+
+	    /* spotlight attenuation */
+	    if (light->_Flags & LIGHT_SPOT) {
+	       GLfloat PV_dot_dir = - DOT3(VP, light->_NormSpotDirection);
+	       if (PV_dot_dir < light->_CosCutoff) {
+		  continue; /* this light makes no contribution */
+	       }
+	       else {
+		  GLdouble x = PV_dot_dir * (EXP_TABLE_SIZE-1);
+		  GLint k = (GLint) x;
+		  GLfloat spot = (GLfloat) (light->_SpotExpTable[k][0]
+				  + (x-k)*light->_SpotExpTable[k][1]);
+		  attenuation *= spot;
+	       }
+	    }
+	 }
+
+	 if (attenuation < 1e-3)
+	    continue;		/* this light makes no contribution */
+
+	 n_dot_VP = DOT3( normal, VP );
+
+	 /* which side are we lighting? */
+	 if (n_dot_VP < 0.0F) {
+#if IDX & LIGHT_TWOSIDE
+	    side = 1;
+	    correction = -1;
+	    n_dot_VP = -n_dot_VP;
+#else
+            continue;
+#endif
+	 }
+
+	 /* accumulate diffuse term */
+	 diffuse[side] += n_dot_VP * light->_dli * attenuation;
+
+	 /* specular term */
+	 if (ctx->Light.Model.LocalViewer) {
+	    GLfloat v[3];
+	    COPY_3V(v, vertex);
+	    NORMALIZE_3FV(v);
+	    SUB_3V(VP, VP, v);                /* h = VP + VPe */
+	    h = VP;
+	    NORMALIZE_3FV(h);
+	 }
+	 else if (light->_Flags & LIGHT_POSITIONAL) {
+	    h = VP;
+            /* Strangely, disabling this addition fixes a conformance
+             * problem.  If this code is enabled, l_sed.c fails.
+             */
+	    /*ACC_3V(h, ctx->_EyeZDir);*/
+	    NORMALIZE_3FV(h);
+	 }
+         else {
+	    h = light->_h_inf_norm;
+	 }
+
+	 n_dot_h = correction * DOT3(normal, h);
+	 if (n_dot_h > 0.0F) {
+	    GLfloat spec_coef;
+	    struct gl_shine_tab *tab = ctx->_ShineTable[side];
+	    GET_SHINE_TAB_ENTRY( tab, n_dot_h, spec_coef);
+	    specular[side] += spec_coef * light->_sli * attenuation;
+	 }
+      } /*loop over lights*/
+
+      /* Now compute final color index */
+      for (side = 0 ; side < NR_SIDES ; side++) {
+	 const GLfloat *ind = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_INDEXES + side];
+	 GLfloat index;
+
+	 if (specular[side] > 1.0F) {
+	    index = ind[MAT_INDEX_SPECULAR];
+	 }
+	 else {
+	    GLfloat d_a = ind[MAT_INDEX_DIFFUSE] - ind[MAT_INDEX_AMBIENT];
+	    GLfloat s_a = ind[MAT_INDEX_SPECULAR] - ind[MAT_INDEX_AMBIENT];
+	    index = (ind[MAT_INDEX_AMBIENT]
+		     + diffuse[side] * (1.0F-specular[side]) * d_a
+		     + specular[side] * s_a);
+	    if (index > ind[MAT_INDEX_SPECULAR]) {
+	       index = ind[MAT_INDEX_SPECULAR];
+	    }
+	 }
+	 indexResult[side][j] = index;
+      }
+   } /*for vertex*/
+}
+
+
+
+static void TAG(init_light_tab)( void )
+{
+   _tnl_light_tab[IDX] = TAG(light_rgba);
+   _tnl_light_fast_tab[IDX] = TAG(light_fast_rgba);
+   _tnl_light_fast_single_tab[IDX] = TAG(light_fast_rgba_single);
+   _tnl_light_spec_tab[IDX] = TAG(light_rgba_spec);
+   _tnl_light_ci_tab[IDX] = TAG(light_ci);
+}
+
+
+#undef TAG
+#undef IDX
+#undef NR_SIDES