libxtrans libXdmcp libxcb mesa xserver git update 13 jan 2012

4 files changed, 248 insertions, 248 deletions

diff --git a/mesalib/src/mesa/swrast/s_aalinetemp.h b/mesalib/src/mesa/swrast/s_aalinetemp.h
index 7c535669b..376ef32d0 100644
--- a/mesalib/src/mesa/swrast/s_aalinetemp.h
+++ b/mesalib/src/mesa/swrast/s_aalinetemp.h
@@ -1,242 +1,242 @@
-/*

- * Mesa 3-D graphics library

- * Version:  7.1

- *

- * Copyright (C) 1999-2007  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.

- */

-

-

-/*

- * Antialiased line template.

- */

-

-

-/*

- * Function to render each fragment in the AA line.

- * \param ix  - integer fragment window X coordiante

- * \param iy  - integer fragment window Y coordiante

- */

-static void

-NAME(plot)(struct gl_context *ctx, struct LineInfo *line, int ix, int iy)

-{

-   const SWcontext *swrast = SWRAST_CONTEXT(ctx);

-   const GLfloat fx = (GLfloat) ix;

-   const GLfloat fy = (GLfloat) iy;

-   const GLfloat coverage = compute_coveragef(line, ix, iy);

-   const GLuint i = line->span.end;

-

-   (void) swrast;

-

-   if (coverage == 0.0)

-      return;

-

-   line->span.end++;

-   line->span.array->coverage[i] = coverage;

-   line->span.array->x[i] = ix;

-   line->span.array->y[i] = iy;

-

-   /*

-    * Compute Z, color, texture coords, fog for the fragment by

-    * solving the plane equations at (ix,iy).

-    */

-#ifdef DO_Z

-   line->span.array->z[i] = (GLuint) solve_plane(fx, fy, line->zPlane);

-#endif

-   line->span.array->rgba[i][RCOMP] = solve_plane_chan(fx, fy, line->rPlane);

-   line->span.array->rgba[i][GCOMP] = solve_plane_chan(fx, fy, line->gPlane);

-   line->span.array->rgba[i][BCOMP] = solve_plane_chan(fx, fy, line->bPlane);

-   line->span.array->rgba[i][ACOMP] = solve_plane_chan(fx, fy, line->aPlane);

-#if defined(DO_ATTRIBS)

-   ATTRIB_LOOP_BEGIN

-      GLfloat (*attribArray)[4] = line->span.array->attribs[attr];

-      if (attr >= FRAG_ATTRIB_TEX0 && attr < FRAG_ATTRIB_VAR0

-          && !ctx->FragmentProgram._Current) {

-         /* texcoord w/ divide by Q */

-         const GLuint unit = attr - FRAG_ATTRIB_TEX0;

-         const GLfloat invQ = solve_plane_recip(fx, fy, line->attrPlane[attr][3]);

-         GLuint c;

-         for (c = 0; c < 3; c++) {

-            attribArray[i][c] = solve_plane(fx, fy, line->attrPlane[attr][c]) * invQ;

-         }

-         line->span.array->lambda[unit][i]

-            = compute_lambda(line->attrPlane[attr][0],

-                             line->attrPlane[attr][1], invQ,

-                             line->texWidth[attr], line->texHeight[attr]);

-      }

-      else {

-         /* non-texture attrib */

-         const GLfloat invW = solve_plane_recip(fx, fy, line->wPlane);

-         GLuint c;

-         for (c = 0; c < 4; c++) {

-            attribArray[i][c] = solve_plane(fx, fy, line->attrPlane[attr][c]) * invW;

-         }

-      }

-   ATTRIB_LOOP_END

-#endif

-

-   if (line->span.end == MAX_WIDTH) {

-      _swrast_write_rgba_span(ctx, &(line->span));

-      line->span.end = 0; /* reset counter */

-   }

-}

-

-

-

-/*

- * Line setup

- */

-static void

-NAME(line)(struct gl_context *ctx, const SWvertex *v0, const SWvertex *v1)

-{

-   SWcontext *swrast = SWRAST_CONTEXT(ctx);

-   GLfloat tStart, tEnd;   /* segment start, end along line length */

-   GLboolean inSegment;

-   GLint iLen, i;

-

-   /* Init the LineInfo struct */

-   struct LineInfo line;

-   line.x0 = v0->attrib[FRAG_ATTRIB_WPOS][0];

-   line.y0 = v0->attrib[FRAG_ATTRIB_WPOS][1];

-   line.x1 = v1->attrib[FRAG_ATTRIB_WPOS][0];

-   line.y1 = v1->attrib[FRAG_ATTRIB_WPOS][1];

-   line.dx = line.x1 - line.x0;

-   line.dy = line.y1 - line.y0;

-   line.len = SQRTF(line.dx * line.dx + line.dy * line.dy);

-   line.halfWidth = 0.5F * CLAMP(ctx->Line.Width,

-                                 ctx->Const.MinLineWidthAA,

-                                 ctx->Const.MaxLineWidthAA);

-

-   if (line.len == 0.0 || IS_INF_OR_NAN(line.len))

-      return;

-

-   INIT_SPAN(line.span, GL_LINE);

-   line.span.arrayMask = SPAN_XY | SPAN_COVERAGE;

-   line.span.facing = swrast->PointLineFacing;

-   line.xAdj = line.dx / line.len * line.halfWidth;

-   line.yAdj = line.dy / line.len * line.halfWidth;

-

-#ifdef DO_Z

-   line.span.arrayMask |= SPAN_Z;

-   compute_plane(line.x0, line.y0, line.x1, line.y1,

-                 v0->attrib[FRAG_ATTRIB_WPOS][2], v1->attrib[FRAG_ATTRIB_WPOS][2], line.zPlane);

-#endif

-   line.span.arrayMask |= SPAN_RGBA;

-   if (ctx->Light.ShadeModel == GL_SMOOTH) {

-      compute_plane(line.x0, line.y0, line.x1, line.y1,

-                    v0->color[RCOMP], v1->color[RCOMP], line.rPlane);

-      compute_plane(line.x0, line.y0, line.x1, line.y1,

-                    v0->color[GCOMP], v1->color[GCOMP], line.gPlane);

-      compute_plane(line.x0, line.y0, line.x1, line.y1,

-                    v0->color[BCOMP], v1->color[BCOMP], line.bPlane);

-      compute_plane(line.x0, line.y0, line.x1, line.y1,

-                    v0->color[ACOMP], v1->color[ACOMP], line.aPlane);

-   }

-   else {

-      constant_plane(v1->color[RCOMP], line.rPlane);

-      constant_plane(v1->color[GCOMP], line.gPlane);

-      constant_plane(v1->color[BCOMP], line.bPlane);

-      constant_plane(v1->color[ACOMP], line.aPlane);

-   }

-#if defined(DO_ATTRIBS)

-   {

-      const GLfloat invW0 = v0->attrib[FRAG_ATTRIB_WPOS][3];

-      const GLfloat invW1 = v1->attrib[FRAG_ATTRIB_WPOS][3];

-      line.span.arrayMask |= SPAN_LAMBDA;

-      compute_plane(line.x0, line.y0, line.x1, line.y1, invW0, invW1, line.wPlane);

-      ATTRIB_LOOP_BEGIN

-         GLuint c;

-         if (swrast->_InterpMode[attr] == GL_FLAT) {

-            for (c = 0; c < 4; c++) {

-               constant_plane(v1->attrib[attr][c], line.attrPlane[attr][c]);

-            }

-         }

-         else {

-            for (c = 0; c < 4; c++) {

-               const GLfloat a0 = v0->attrib[attr][c] * invW0;

-               const GLfloat a1 = v1->attrib[attr][c] * invW1;

-               compute_plane(line.x0, line.y0, line.x1, line.y1, a0, a1,

-                             line.attrPlane[attr][c]);

-            }

-         }

-         line.span.arrayAttribs |= (1 << attr);

-         if (attr >= FRAG_ATTRIB_TEX0 && attr < FRAG_ATTRIB_VAR0) {

-            const GLuint u = attr - FRAG_ATTRIB_TEX0;

-            const struct gl_texture_object *obj = ctx->Texture.Unit[u]._Current;

-            const struct gl_texture_image *texImage = obj->Image[0][obj->BaseLevel];

-            line.texWidth[attr]  = (GLfloat) texImage->Width;

-            line.texHeight[attr] = (GLfloat) texImage->Height;

-         }

-      ATTRIB_LOOP_END

-   }

-#endif

-

-   tStart = tEnd = 0.0;

-   inSegment = GL_FALSE;

-   iLen = (GLint) line.len;

-

-   if (ctx->Line.StippleFlag) {

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

-         const GLuint bit = (swrast->StippleCounter / ctx->Line.StippleFactor) & 0xf;

-         if ((1 << bit) & ctx->Line.StipplePattern) {

-            /* stipple bit is on */

-            const GLfloat t = (GLfloat) i / (GLfloat) line.len;

-            if (!inSegment) {

-               /* start new segment */

-               inSegment = GL_TRUE;

-               tStart = t;

-            }

-            else {

-               /* still in the segment, extend it */

-               tEnd = t;

-            }

-         }

-         else {

-            /* stipple bit is off */

-            if (inSegment && (tEnd > tStart)) {

-               /* draw the segment */

-               segment(ctx, &line, NAME(plot), tStart, tEnd);

-               inSegment = GL_FALSE;

-            }

-            else {

-               /* still between segments, do nothing */

-            }

-         }

-         swrast->StippleCounter++;

-      }

-

-      if (inSegment) {

-         /* draw the final segment of the line */

-         segment(ctx, &line, NAME(plot), tStart, 1.0F);

-      }

-   }

-   else {

-      /* non-stippled */

-      segment(ctx, &line, NAME(plot), 0.0, 1.0);

-   }

-

-   _swrast_write_rgba_span(ctx, &(line.span));

-}

-

-

-

-

-#undef DO_Z

-#undef DO_ATTRIBS

-#undef NAME

+/*
+ * Mesa 3-D graphics library
+ * Version:  7.1
+ *
+ * Copyright (C) 1999-2007  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.
+ */
+
+
+/*
+ * Antialiased line template.
+ */
+
+
+/*
+ * Function to render each fragment in the AA line.
+ * \param ix  - integer fragment window X coordiante
+ * \param iy  - integer fragment window Y coordiante
+ */
+static void
+NAME(plot)(struct gl_context *ctx, struct LineInfo *line, int ix, int iy)
+{
+   const SWcontext *swrast = SWRAST_CONTEXT(ctx);
+   const GLfloat fx = (GLfloat) ix;
+   const GLfloat fy = (GLfloat) iy;
+   const GLfloat coverage = compute_coveragef(line, ix, iy);
+   const GLuint i = line->span.end;
+
+   (void) swrast;
+
+   if (coverage == 0.0)
+      return;
+
+   line->span.end++;
+   line->span.array->coverage[i] = coverage;
+   line->span.array->x[i] = ix;
+   line->span.array->y[i] = iy;
+
+   /*
+    * Compute Z, color, texture coords, fog for the fragment by
+    * solving the plane equations at (ix,iy).
+    */
+#ifdef DO_Z
+   line->span.array->z[i] = (GLuint) solve_plane(fx, fy, line->zPlane);
+#endif
+   line->span.array->rgba[i][RCOMP] = solve_plane_chan(fx, fy, line->rPlane);
+   line->span.array->rgba[i][GCOMP] = solve_plane_chan(fx, fy, line->gPlane);
+   line->span.array->rgba[i][BCOMP] = solve_plane_chan(fx, fy, line->bPlane);
+   line->span.array->rgba[i][ACOMP] = solve_plane_chan(fx, fy, line->aPlane);
+#if defined(DO_ATTRIBS)
+   ATTRIB_LOOP_BEGIN
+      GLfloat (*attribArray)[4] = line->span.array->attribs[attr];
+      if (attr >= FRAG_ATTRIB_TEX0 && attr < FRAG_ATTRIB_VAR0
+          && !ctx->FragmentProgram._Current) {
+         /* texcoord w/ divide by Q */
+         const GLuint unit = attr - FRAG_ATTRIB_TEX0;
+         const GLfloat invQ = solve_plane_recip(fx, fy, line->attrPlane[attr][3]);
+         GLuint c;
+         for (c = 0; c < 3; c++) {
+            attribArray[i][c] = solve_plane(fx, fy, line->attrPlane[attr][c]) * invQ;
+         }
+         line->span.array->lambda[unit][i]
+            = compute_lambda(line->attrPlane[attr][0],
+                             line->attrPlane[attr][1], invQ,
+                             line->texWidth[attr], line->texHeight[attr]);
+      }
+      else {
+         /* non-texture attrib */
+         const GLfloat invW = solve_plane_recip(fx, fy, line->wPlane);
+         GLuint c;
+         for (c = 0; c < 4; c++) {
+            attribArray[i][c] = solve_plane(fx, fy, line->attrPlane[attr][c]) * invW;
+         }
+      }
+   ATTRIB_LOOP_END
+#endif
+
+   if (line->span.end == MAX_WIDTH) {
+      _swrast_write_rgba_span(ctx, &(line->span));
+      line->span.end = 0; /* reset counter */
+   }
+}
+
+
+
+/*
+ * Line setup
+ */
+static void
+NAME(line)(struct gl_context *ctx, const SWvertex *v0, const SWvertex *v1)
+{
+   SWcontext *swrast = SWRAST_CONTEXT(ctx);
+   GLfloat tStart, tEnd;   /* segment start, end along line length */
+   GLboolean inSegment;
+   GLint iLen, i;
+
+   /* Init the LineInfo struct */
+   struct LineInfo line;
+   line.x0 = v0->attrib[FRAG_ATTRIB_WPOS][0];
+   line.y0 = v0->attrib[FRAG_ATTRIB_WPOS][1];
+   line.x1 = v1->attrib[FRAG_ATTRIB_WPOS][0];
+   line.y1 = v1->attrib[FRAG_ATTRIB_WPOS][1];
+   line.dx = line.x1 - line.x0;
+   line.dy = line.y1 - line.y0;
+   line.len = SQRTF(line.dx * line.dx + line.dy * line.dy);
+   line.halfWidth = 0.5F * CLAMP(ctx->Line.Width,
+                                 ctx->Const.MinLineWidthAA,
+                                 ctx->Const.MaxLineWidthAA);
+
+   if (line.len == 0.0 || IS_INF_OR_NAN(line.len))
+      return;
+
+   INIT_SPAN(line.span, GL_LINE);
+   line.span.arrayMask = SPAN_XY | SPAN_COVERAGE;
+   line.span.facing = swrast->PointLineFacing;
+   line.xAdj = line.dx / line.len * line.halfWidth;
+   line.yAdj = line.dy / line.len * line.halfWidth;
+
+#ifdef DO_Z
+   line.span.arrayMask |= SPAN_Z;
+   compute_plane(line.x0, line.y0, line.x1, line.y1,
+                 v0->attrib[FRAG_ATTRIB_WPOS][2], v1->attrib[FRAG_ATTRIB_WPOS][2], line.zPlane);
+#endif
+   line.span.arrayMask |= SPAN_RGBA;
+   if (ctx->Light.ShadeModel == GL_SMOOTH) {
+      compute_plane(line.x0, line.y0, line.x1, line.y1,
+                    v0->color[RCOMP], v1->color[RCOMP], line.rPlane);
+      compute_plane(line.x0, line.y0, line.x1, line.y1,
+                    v0->color[GCOMP], v1->color[GCOMP], line.gPlane);
+      compute_plane(line.x0, line.y0, line.x1, line.y1,
+                    v0->color[BCOMP], v1->color[BCOMP], line.bPlane);
+      compute_plane(line.x0, line.y0, line.x1, line.y1,
+                    v0->color[ACOMP], v1->color[ACOMP], line.aPlane);
+   }
+   else {
+      constant_plane(v1->color[RCOMP], line.rPlane);
+      constant_plane(v1->color[GCOMP], line.gPlane);
+      constant_plane(v1->color[BCOMP], line.bPlane);
+      constant_plane(v1->color[ACOMP], line.aPlane);
+   }
+#if defined(DO_ATTRIBS)
+   {
+      const GLfloat invW0 = v0->attrib[FRAG_ATTRIB_WPOS][3];
+      const GLfloat invW1 = v1->attrib[FRAG_ATTRIB_WPOS][3];
+      line.span.arrayMask |= SPAN_LAMBDA;
+      compute_plane(line.x0, line.y0, line.x1, line.y1, invW0, invW1, line.wPlane);
+      ATTRIB_LOOP_BEGIN
+         GLuint c;
+         if (swrast->_InterpMode[attr] == GL_FLAT) {
+            for (c = 0; c < 4; c++) {
+               constant_plane(v1->attrib[attr][c], line.attrPlane[attr][c]);
+            }
+         }
+         else {
+            for (c = 0; c < 4; c++) {
+               const GLfloat a0 = v0->attrib[attr][c] * invW0;
+               const GLfloat a1 = v1->attrib[attr][c] * invW1;
+               compute_plane(line.x0, line.y0, line.x1, line.y1, a0, a1,
+                             line.attrPlane[attr][c]);
+            }
+         }
+         line.span.arrayAttribs |= BITFIELD64_BIT(attr);
+         if (attr >= FRAG_ATTRIB_TEX0 && attr < FRAG_ATTRIB_VAR0) {
+            const GLuint u = attr - FRAG_ATTRIB_TEX0;
+            const struct gl_texture_object *obj = ctx->Texture.Unit[u]._Current;
+            const struct gl_texture_image *texImage = obj->Image[0][obj->BaseLevel];
+            line.texWidth[attr]  = (GLfloat) texImage->Width;
+            line.texHeight[attr] = (GLfloat) texImage->Height;
+         }
+      ATTRIB_LOOP_END
+   }
+#endif
+
+   tStart = tEnd = 0.0;
+   inSegment = GL_FALSE;
+   iLen = (GLint) line.len;
+
+   if (ctx->Line.StippleFlag) {
+      for (i = 0; i < iLen; i++) {
+         const GLuint bit = (swrast->StippleCounter / ctx->Line.StippleFactor) & 0xf;
+         if ((1 << bit) & ctx->Line.StipplePattern) {
+            /* stipple bit is on */
+            const GLfloat t = (GLfloat) i / (GLfloat) line.len;
+            if (!inSegment) {
+               /* start new segment */
+               inSegment = GL_TRUE;
+               tStart = t;
+            }
+            else {
+               /* still in the segment, extend it */
+               tEnd = t;
+            }
+         }
+         else {
+            /* stipple bit is off */
+            if (inSegment && (tEnd > tStart)) {
+               /* draw the segment */
+               segment(ctx, &line, NAME(plot), tStart, tEnd);
+               inSegment = GL_FALSE;
+            }
+            else {
+               /* still between segments, do nothing */
+            }
+         }
+         swrast->StippleCounter++;
+      }
+
+      if (inSegment) {
+         /* draw the final segment of the line */
+         segment(ctx, &line, NAME(plot), tStart, 1.0F);
+      }
+   }
+   else {
+      /* non-stippled */
+      segment(ctx, &line, NAME(plot), 0.0, 1.0);
+   }
+
+   _swrast_write_rgba_span(ctx, &(line.span));
+}
+
+
+
+
+#undef DO_Z
+#undef DO_ATTRIBS
+#undef NAME
diff --git a/mesalib/src/mesa/swrast/s_context.c b/mesalib/src/mesa/swrast/s_context.c
index 94b7fe34d..06824ea2c 100644
--- a/mesalib/src/mesa/swrast/s_context.c
+++ b/mesalib/src/mesa/swrast/s_context.c
@@ -531,7 +531,7 @@ _swrast_update_active_attribs(struct gl_context *ctx)
    {
       GLuint i, num = 0;
       for (i = 0; i < FRAG_ATTRIB_MAX; i++) {
-         if (attribsMask & (1 << i)) {
+         if (attribsMask & BITFIELD64_BIT(i)) {
             swrast->_ActiveAttribs[num++] = i;
             /* how should this attribute be interpolated? */
             if (i == FRAG_ATTRIB_COL0 || i == FRAG_ATTRIB_COL1)
diff --git a/mesalib/src/mesa/swrast/s_span.c b/mesalib/src/mesa/swrast/s_span.c
index 689fe34ae..e89930353 100644
--- a/mesalib/src/mesa/swrast/s_span.c
+++ b/mesalib/src/mesa/swrast/s_span.c
@@ -175,7 +175,7 @@ interpolate_active_attribs(struct gl_context *ctx, SWspan *span,
    attrMask &= ~span->arrayAttribs;
 
    ATTRIB_LOOP_BEGIN
-      if (attrMask & (1 << attr)) {
+      if (attrMask & BITFIELD64_BIT(attr)) {
          const GLfloat dwdx = span->attrStepX[FRAG_ATTRIB_WPOS][3];
          GLfloat w = span->attrStart[FRAG_ATTRIB_WPOS][3];
          const GLfloat dv0dx = span->attrStepX[attr][0];
@@ -199,8 +199,8 @@ interpolate_active_attribs(struct gl_context *ctx, SWspan *span,
             v3 += dv3dx;
             w += dwdx;
          }
-         ASSERT((span->arrayAttribs & (1 << attr)) == 0);
-         span->arrayAttribs |= (1 << attr);
+         ASSERT((span->arrayAttribs & BITFIELD64_BIT(attr)) == 0);
+         span->arrayAttribs |= BITFIELD64_BIT(attr);
       }
    ATTRIB_LOOP_END
 }
diff --git a/mesalib/src/mesa/swrast/s_texture.c b/mesalib/src/mesa/swrast/s_texture.c
index ffd78a2b8..337a52f32 100644
--- a/mesalib/src/mesa/swrast/s_texture.c
+++ b/mesalib/src/mesa/swrast/s_texture.c
@@ -285,7 +285,7 @@ _swrast_map_textures(struct gl_context *ctx)
 
    /* loop over enabled texture units */
    while (enabledUnits) {
-      GLuint unit = _mesa_ffs(enabledUnits) - 1;
+      GLuint unit = ffs(enabledUnits) - 1;
       struct gl_texture_object *texObj = ctx->Texture.Unit[unit]._Current;
       
       _swrast_map_texture(ctx, texObj);
@@ -305,7 +305,7 @@ _swrast_unmap_textures(struct gl_context *ctx)
 
    /* loop over enabled texture units */
    while (enabledUnits) {
-      GLuint unit = _mesa_ffs(enabledUnits) - 1;
+      GLuint unit = ffs(enabledUnits) - 1;
       struct gl_texture_object *texObj = ctx->Texture.Unit[unit]._Current;
       
       _swrast_unmap_texture(ctx, texObj);