swrast: Remove support for rendering triangles into a color-index buffer

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>

2 files changed, 4 insertions, 75 deletions

diff --git a/src/mesa/swrast/s_triangle.c b/src/mesa/swrast/s_triangle.c
index 11184b72ce..812dddf15c 100644
--- a/src/mesa/swrast/s_triangle.c
+++ b/src/mesa/swrast/s_triangle.c
@@ -70,18 +70,6 @@ _swrast_culltriangle( GLcontext *ctx,
 
 
 /*
- * Render a smooth or flat-shaded color index triangle.
- */
-#define NAME ci_triangle
-#define INTERP_Z 1
-#define INTERP_ATTRIBS 1  /* just for fog */
-#define INTERP_INDEX 1
-#define RENDER_SPAN( span )  _swrast_write_index_span(ctx, &span);
-#include "s_tritemp.h"
-
-
-
-/*
  * Render a flat-shaded RGBA triangle.
  */
 #define NAME flat_rgba_triangle
@@ -1007,7 +995,6 @@ void
 _swrast_choose_triangle( GLcontext *ctx )
 {
    SWcontext *swrast = SWRAST_CONTEXT(ctx);
-   const GLboolean rgbmode = ctx->Visual.rgbMode;
 
    if (ctx->Polygon.CullFlag &&
        ctx->Polygon.CullFaceMode == GL_FRONT_AND_BACK) {
@@ -1029,23 +1016,15 @@ _swrast_choose_triangle( GLcontext *ctx )
           ctx->Depth.Mask == GL_FALSE &&
           ctx->Depth.Func == GL_LESS &&
           !ctx->Stencil._Enabled) {
-         if ((rgbmode &&
-              ctx->Color.ColorMask[0][0] == 0 &&
-              ctx->Color.ColorMask[0][1] == 0 &&
-              ctx->Color.ColorMask[0][2] == 0 &&
-              ctx->Color.ColorMask[0][3] == 0)
-             ||
-             (!rgbmode && ctx->Color.IndexMask == 0)) {
+         if (ctx->Color.ColorMask[0][0] == 0 &&
+	     ctx->Color.ColorMask[0][1] == 0 &&
+	     ctx->Color.ColorMask[0][2] == 0 &&
+	     ctx->Color.ColorMask[0][3] == 0) {
             USE(occlusion_zless_triangle);
             return;
          }
       }
 
-      if (!rgbmode) {
-         USE(ci_triangle);
-         return;
-      }
-
       /*
        * XXX should examine swrast->_ActiveAttribMask to determine what
        * needs to be interpolated.
diff --git a/src/mesa/swrast/s_tritemp.h b/src/mesa/swrast/s_tritemp.h
index 8e3c5b5eeb..0aa8739f4f 100644
--- a/src/mesa/swrast/s_tritemp.h
+++ b/src/mesa/swrast/s_tritemp.h
@@ -32,7 +32,6 @@
  *    INTERP_Z        - if defined, interpolate integer Z values
  *    INTERP_RGB      - if defined, interpolate integer RGB values
  *    INTERP_ALPHA    - if defined, interpolate integer Alpha values
- *    INTERP_INDEX    - if defined, interpolate color index values
  *    INTERP_INT_TEX  - if defined, interpolate integer ST texcoords
  *                         (fast, simple 2-D texture mapping, without
  *                         perspective correction)
@@ -319,9 +318,6 @@ static void NAME(GLcontext *ctx, const SWvertex *v0,
 
    {
       GLint scan_from_left_to_right;  /* true if scanning left-to-right */
-#ifdef INTERP_INDEX
-      GLfloat didx, didy;
-#endif
 
       /*
        * Execute user-supplied setup code
@@ -398,21 +394,6 @@ static void NAME(GLcontext *ctx, const SWvertex *v0,
 #  endif
       }
 #endif /* INTERP_RGB */
-#ifdef INTERP_INDEX
-      span.interpMask |= SPAN_INDEX;
-      if (ctx->Light.ShadeModel == GL_SMOOTH) {
-         GLfloat eMaj_di = vMax->attrib[FRAG_ATTRIB_CI][0] - vMin->attrib[FRAG_ATTRIB_CI][0];
-         GLfloat eBot_di = vMid->attrib[FRAG_ATTRIB_CI][0] - vMin->attrib[FRAG_ATTRIB_CI][0];
-         didx = oneOverArea * (eMaj_di * eBot.dy - eMaj.dy * eBot_di);
-         didy = oneOverArea * (eMaj.dx * eBot_di - eMaj_di * eBot.dx);
-         span.indexStep = SignedFloatToFixed(didx);
-      }
-      else {
-         span.interpMask |= SPAN_FLAT;
-         didx = didy = 0.0F;
-         span.indexStep = 0;
-      }
-#endif
 #ifdef INTERP_INT_TEX
       {
          GLfloat eMaj_ds = (vMax->attrib[FRAG_ATTRIB_TEX0][0] - vMin->attrib[FRAG_ATTRIB_TEX0][0]) * S_SCALE;
@@ -531,9 +512,6 @@ static void NAME(GLcontext *ctx, const SWvertex *v0,
 #ifdef INTERP_ALPHA
          GLint aLeft = 0, fdaOuter = 0, fdaInner;
 #endif
-#ifdef INTERP_INDEX
-         GLfixed iLeft=0, diOuter=0, diInner;
-#endif
 #ifdef INTERP_INT_TEX
          GLfixed sLeft=0, dsOuter=0, dsInner;
          GLfixed tLeft=0, dtOuter=0, dtInner;
@@ -697,18 +675,6 @@ static void NAME(GLcontext *ctx, const SWvertex *v0,
 #endif /* INTERP_RGB */
 
 
-#ifdef INTERP_INDEX
-               if (ctx->Light.ShadeModel == GL_SMOOTH) {
-                  iLeft = (GLfixed)(vLower->attrib[FRAG_ATTRIB_CI][0] * FIXED_SCALE
-                                 + didx * adjx + didy * adjy) + FIXED_HALF;
-                  diOuter = SignedFloatToFixed(didy + dxOuter * didx);
-               }
-               else {
-                  ASSERT(ctx->Light.ShadeModel == GL_FLAT);
-                  iLeft = FloatToFixed(v2->attrib[FRAG_ATTRIB_CI][0]);
-                  diOuter = 0;
-               }
-#endif
 #ifdef INTERP_INT_TEX
                {
                   GLfloat s0, t0;
@@ -784,9 +750,6 @@ static void NAME(GLcontext *ctx, const SWvertex *v0,
 #ifdef INTERP_ALPHA
             fdaInner = fdaOuter + span.alphaStep;
 #endif
-#ifdef INTERP_INDEX
-            diInner = diOuter + span.indexStep;
-#endif
 #ifdef INTERP_INT_TEX
             dsInner = dsOuter + span.intTexStep[0];
             dtInner = dtOuter + span.intTexStep[1];
@@ -822,9 +785,6 @@ static void NAME(GLcontext *ctx, const SWvertex *v0,
 #ifdef INTERP_ALPHA
                span.alpha = aLeft;
 #endif
-#ifdef INTERP_INDEX
-               span.index = iLeft;
-#endif
 #ifdef INTERP_INT_TEX
                span.intTex[0] = sLeft;
                span.intTex[1] = tLeft;
@@ -855,9 +815,6 @@ static void NAME(GLcontext *ctx, const SWvertex *v0,
 #ifdef INTERP_ALPHA
                   CLAMP_INTERPOLANT(alpha, alphaStep, len);
 #endif
-#ifdef INTERP_INDEX
-                  CLAMP_INTERPOLANT(index, indexStep, len);
-#endif
                   {
                      RENDER_SPAN( span );
                   }
@@ -896,9 +853,6 @@ static void NAME(GLcontext *ctx, const SWvertex *v0,
 #ifdef INTERP_ALPHA
                   aLeft += fdaOuter;
 #endif
-#ifdef INTERP_INDEX
-                  iLeft += diOuter;
-#endif
 #ifdef INTERP_INT_TEX
                   sLeft += dsOuter;
                   tLeft += dtOuter;
@@ -931,9 +885,6 @@ static void NAME(GLcontext *ctx, const SWvertex *v0,
 #ifdef INTERP_ALPHA
                   aLeft += fdaInner;
 #endif
-#ifdef INTERP_INDEX
-                  iLeft += diInner;
-#endif
 #ifdef INTERP_INT_TEX
                   sLeft += dsInner;
                   tLeft += dtInner;
@@ -967,7 +918,6 @@ static void NAME(GLcontext *ctx, const SWvertex *v0,
 #undef INTERP_Z
 #undef INTERP_RGB
 #undef INTERP_ALPHA
-#undef INTERP_INDEX
 #undef INTERP_INT_TEX
 #undef INTERP_ATTRIBS