mesa: remove GL_SGI_texture_color_table support

It was only implemented in the swrast driver and probably not used by
any applications.  A modern app would use a dependent/chained texture
lookup in the fragment shader.

10 files changed, 3 insertions, 154 deletions

diff --git a/docs/relnotes-7.11.html b/docs/relnotes-7.11.html
index 4b1730b17e..277339bc4c 100644
--- a/docs/relnotes-7.11.html
+++ b/docs/relnotes-7.11.html
@@ -53,6 +53,8 @@ tbd
 <ul>
 <li>The Windows MSVC project files have been removed.  They haven't been maintained
 in quite a while.  Building with SCons is an alterantive.
+<li>Removed GL_SGI_texture_color_table support from swrast driver - the only
+driver that implemented it.
 </ul>
 
 
diff --git a/src/mesa/main/attrib.c b/src/mesa/main/attrib.c
index 7fd1287368..ae7f633b8d 100644
--- a/src/mesa/main/attrib.c
+++ b/src/mesa/main/attrib.c
@@ -125,9 +125,6 @@ struct gl_enable_attrib
    GLbitfield Texture[MAX_TEXTURE_UNITS];
    GLbitfield TexGen[MAX_TEXTURE_UNITS];
 
-   /* SGI_texture_color_table */
-   GLboolean TextureColorTable[MAX_TEXTURE_UNITS];
-
    /* GL_ARB_vertex_program / GL_NV_vertex_program */
    GLboolean VertexProgram;
    GLboolean VertexProgramPointSize;
@@ -311,7 +308,6 @@ _mesa_PushAttrib(GLbitfield mask)
       for (i = 0; i < ctx->Const.MaxTextureUnits; i++) {
          attr->Texture[i] = ctx->Texture.Unit[i].Enabled;
          attr->TexGen[i] = ctx->Texture.Unit[i].TexGenEnabled;
-         attr->TextureColorTable[i] = ctx->Texture.Unit[i].ColorTableEnabled;
       }
       /* GL_NV_vertex_program */
       attr->VertexProgram = ctx->VertexProgram.Enabled;
@@ -657,9 +653,6 @@ pop_enable_group(struct gl_context *ctx, const struct gl_enable_attrib *enable)
          _mesa_set_enable(ctx, GL_TEXTURE_GEN_Q,
                           (genEnabled & Q_BIT) ? GL_TRUE : GL_FALSE);
       }
-
-      /* GL_SGI_texture_color_table */
-      ctx->Texture.Unit[i].ColorTableEnabled = enable->TextureColorTable[i];
    }
 
    _mesa_ActiveTextureARB(GL_TEXTURE0 + curTexUnitSave);
@@ -702,10 +695,6 @@ pop_texture_group(struct gl_context *ctx, struct texture_state *texstate)
                  (unit->Enabled & TEXTURE_2D_ARRAY_BIT) ? GL_TRUE : GL_FALSE);
       }
 
-      if (ctx->Extensions.SGI_texture_color_table) {
-         _mesa_set_enable(ctx, GL_TEXTURE_COLOR_TABLE_SGI,
-                          unit->ColorTableEnabled);
-      }
       _mesa_TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, unit->EnvMode);
       _mesa_TexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, unit->EnvColor);
       _mesa_TexGeni(GL_S, GL_TEXTURE_GEN_MODE, unit->GenS.Mode);
diff --git a/src/mesa/main/colortab.c b/src/mesa/main/colortab.c
index b0ba31c732..026fa48786 100644
--- a/src/mesa/main/colortab.c
+++ b/src/mesa/main/colortab.c
@@ -300,23 +300,6 @@ _mesa_ColorTable( GLenum target, GLenum internalFormat,
       case GL_SHARED_TEXTURE_PALETTE_EXT:
          table = &ctx->Texture.Palette;
          break;
-      case GL_TEXTURE_COLOR_TABLE_SGI:
-         if (!ctx->Extensions.SGI_texture_color_table) {
-            _mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(target)");
-            return;
-         }
-         table = &(texUnit->ColorTable);
-         scale = ctx->Pixel.TextureColorTableScale;
-         bias = ctx->Pixel.TextureColorTableBias;
-         break;
-      case GL_PROXY_TEXTURE_COLOR_TABLE_SGI:
-         if (!ctx->Extensions.SGI_texture_color_table) {
-            _mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(target)");
-            return;
-         }
-         table = &(texUnit->ProxyColorTable);
-         proxy = GL_TRUE;
-         break;
       default:
          /* try texture targets */
          {
@@ -435,15 +418,6 @@ _mesa_ColorSubTable( GLenum target, GLsizei start,
       case GL_SHARED_TEXTURE_PALETTE_EXT:
          table = &ctx->Texture.Palette;
          break;
-      case GL_TEXTURE_COLOR_TABLE_SGI:
-         if (!ctx->Extensions.SGI_texture_color_table) {
-            _mesa_error(ctx, GL_INVALID_ENUM, "glColorSubTable(target)");
-            return;
-         }
-         table = &(texUnit->ColorTable);
-         scale = ctx->Pixel.TextureColorTableScale;
-         bias = ctx->Pixel.TextureColorTableBias;
-         break;
       default:
          /* try texture targets */
          texObj = _mesa_select_tex_object(ctx, texUnit, target);
@@ -551,13 +525,6 @@ _mesa_GetColorTable( GLenum target, GLenum format,
       case GL_SHARED_TEXTURE_PALETTE_EXT:
          table = &ctx->Texture.Palette;
          break;
-      case GL_TEXTURE_COLOR_TABLE_SGI:
-         if (!ctx->Extensions.SGI_texture_color_table) {
-            _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTable(target)");
-            return;
-         }
-         table = &(texUnit->ColorTable);
-         break;
       default:
          /* try texture targets */
          {
@@ -666,10 +633,6 @@ _mesa_ColorTableParameterfv(GLenum target, GLenum pname, const GLfloat *params)
    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 
    switch (target) {
-   case GL_TEXTURE_COLOR_TABLE_SGI:
-      scale = ctx->Pixel.TextureColorTableScale;
-      bias  = ctx->Pixel.TextureColorTableBias;
-      break;
    default:
       _mesa_error(ctx, GL_INVALID_ENUM, "glColorTableParameter(target)");
       return;
@@ -695,17 +658,7 @@ static void GLAPIENTRY
 _mesa_ColorTableParameteriv(GLenum target, GLenum pname, const GLint *params)
 {
    GLfloat fparams[4];
-   if (pname == GL_TEXTURE_COLOR_TABLE_SGI) {
-      /* four values */
-      fparams[0] = (GLfloat) params[0];
-      fparams[1] = (GLfloat) params[1];
-      fparams[2] = (GLfloat) params[2];
-      fparams[3] = (GLfloat) params[3];
-   }
-   else {
-      /* one values */
-      fparams[0] = (GLfloat) params[0];
-   }
+   fparams[0] = (GLfloat) params[0];
    _mesa_ColorTableParameterfv(target, pname, fparams);
 }
 
@@ -723,28 +676,6 @@ _mesa_GetColorTableParameterfv( GLenum target, GLenum pname, GLfloat *params )
       case GL_SHARED_TEXTURE_PALETTE_EXT:
          table = &ctx->Texture.Palette;
          break;
-      case GL_TEXTURE_COLOR_TABLE_SGI:
-         if (!ctx->Extensions.SGI_texture_color_table) {
-            _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameter(target)");
-            return;
-         }
-         table = &(texUnit->ColorTable);
-         if (pname == GL_COLOR_TABLE_SCALE_SGI) {
-            COPY_4V(params, ctx->Pixel.TextureColorTableScale);
-            return;
-         }
-         else if (pname == GL_COLOR_TABLE_BIAS_SGI) {
-            COPY_4V(params, ctx->Pixel.TextureColorTableBias);
-            return;
-         }
-         break;
-      case GL_PROXY_TEXTURE_COLOR_TABLE_SGI:
-         if (!ctx->Extensions.SGI_texture_color_table) {
-            _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameter(target)");
-            return;
-         }
-         table = &(texUnit->ProxyColorTable);
-         break;
       default:
          /* try texture targets */
          {
@@ -808,34 +739,6 @@ _mesa_GetColorTableParameteriv( GLenum target, GLenum pname, GLint *params )
       case GL_SHARED_TEXTURE_PALETTE_EXT:
          table = &ctx->Texture.Palette;
          break;
-      case GL_TEXTURE_COLOR_TABLE_SGI:
-         if (!ctx->Extensions.SGI_texture_color_table) {
-            _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameter(target)");
-            return;
-         }
-         table = &(texUnit->ColorTable);
-         if (pname == GL_COLOR_TABLE_SCALE_SGI) {
-            params[0] = (GLint) ctx->Pixel.TextureColorTableScale[0];
-            params[1] = (GLint) ctx->Pixel.TextureColorTableScale[1];
-            params[2] = (GLint) ctx->Pixel.TextureColorTableScale[2];
-            params[3] = (GLint) ctx->Pixel.TextureColorTableScale[3];
-            return;
-         }
-         else if (pname == GL_COLOR_TABLE_BIAS_SGI) {
-            params[0] = (GLint) ctx->Pixel.TextureColorTableBias[0];
-            params[1] = (GLint) ctx->Pixel.TextureColorTableBias[1];
-            params[2] = (GLint) ctx->Pixel.TextureColorTableBias[2];
-            params[3] = (GLint) ctx->Pixel.TextureColorTableBias[3];
-            return;
-         }
-         break;
-      case GL_PROXY_TEXTURE_COLOR_TABLE_SGI:
-         if (!ctx->Extensions.SGI_texture_color_table) {
-            _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameter(target)");
-            return;
-         }
-         table = &(texUnit->ProxyColorTable);
-         break;
       default:
          /* Try texture targets */
          {
diff --git a/src/mesa/main/enable.c b/src/mesa/main/enable.c
index ea3b8214c3..f247092410 100644
--- a/src/mesa/main/enable.c
+++ b/src/mesa/main/enable.c
@@ -703,15 +703,6 @@ _mesa_set_enable(struct gl_context *ctx, GLenum cap, GLboolean state)
          client_state( ctx, cap, state );
          return;
 
-      /* GL_SGI_texture_color_table */
-      case GL_TEXTURE_COLOR_TABLE_SGI:
-         CHECK_EXTENSION(SGI_texture_color_table, cap);
-         if (ctx->Texture.Unit[ctx->Texture.CurrentUnit].ColorTableEnabled == state)
-            return;
-         FLUSH_VERTICES(ctx, _NEW_TEXTURE);
-         ctx->Texture.Unit[ctx->Texture.CurrentUnit].ColorTableEnabled = state;
-         break;
-
       /* GL_ARB_texture_cube_map */
       case GL_TEXTURE_CUBE_MAP_ARB:
          CHECK_EXTENSION(ARB_texture_cube_map, cap);
@@ -1308,11 +1299,6 @@ _mesa_IsEnabled( GLenum cap )
          return (ctx->Array.ArrayObj->PointSize.Enabled != 0);
 #endif
 
-      /* GL_SGI_texture_color_table */
-      case GL_TEXTURE_COLOR_TABLE_SGI:
-         CHECK_EXTENSION(SGI_texture_color_table);
-         return ctx->Texture.Unit[ctx->Texture.CurrentUnit].ColorTableEnabled;
-
       /* GL_ARB_texture_cube_map */
       case GL_TEXTURE_CUBE_MAP_ARB:
          CHECK_EXTENSION(ARB_texture_cube_map);
diff --git a/src/mesa/main/extensions.c b/src/mesa/main/extensions.c
index b8bb2555ac..3840cdc5d3 100644
--- a/src/mesa/main/extensions.c
+++ b/src/mesa/main/extensions.c
@@ -290,7 +290,6 @@ static const struct extension extension_table[] = {
    { "GL_SGIS_texture_border_clamp",               o(ARB_texture_border_clamp),                GL             },
    { "GL_SGIS_texture_edge_clamp",                 o(SGIS_texture_edge_clamp),                 GL             },
    { "GL_SGIS_texture_lod",                        o(SGIS_texture_lod),                        GL             },
-   { "GL_SGI_texture_color_table",                 o(SGI_texture_color_table),                 GL             },
    { "GL_SUN_multi_draw_arrays",                   o(EXT_multi_draw_arrays),                   GL             },
 
    { 0, 0, 0 },
@@ -520,7 +519,6 @@ _mesa_enable_sw_extensions(struct gl_context *ctx)
 #if FEATURE_NV_fragment_program && FEATURE_ARB_fragment_program
    ctx->Extensions.NV_fragment_program_option = GL_TRUE;
 #endif
-   ctx->Extensions.SGI_texture_color_table = GL_TRUE;
    /*ctx->Extensions.SGIS_generate_mipmap = GL_TRUE;*/
    ctx->Extensions.SGIS_texture_edge_clamp = GL_TRUE;
 #if FEATURE_ARB_vertex_program || FEATURE_ARB_fragment_program
diff --git a/src/mesa/main/get.c b/src/mesa/main/get.c
index fa7aa1121a..336304c591 100644
--- a/src/mesa/main/get.c
+++ b/src/mesa/main/get.c
@@ -290,7 +290,6 @@ EXTRA_EXT(NV_fragment_program);
 EXTRA_EXT(NV_texture_rectangle);
 EXTRA_EXT(EXT_stencil_two_side);
 EXTRA_EXT(NV_light_max_exponent);
-EXTRA_EXT(SGI_texture_color_table);
 EXTRA_EXT(EXT_depth_bounds_test);
 EXTRA_EXT(ARB_depth_clamp);
 EXTRA_EXT(ATI_fragment_shader);
@@ -911,11 +910,6 @@ static const struct value_desc values[] = {
      CONTEXT_MATRIX_T(ProjectionMatrixStack.Top), NO_EXTRA },
    { GL_TRANSPOSE_TEXTURE_MATRIX_ARB, CONTEXT_MATRIX_T(TextureMatrixStack), NO_EXTRA },
 
-   /* GL_SGI_texture_color_table */
-   { GL_TEXTURE_COLOR_TABLE_SGI, LOC_TEXUNIT, TYPE_BOOLEAN,
-     offsetof(struct gl_texture_unit, ColorTableEnabled),
-     extra_SGI_texture_color_table },
-
    /* GL_EXT_secondary_color */
    { GL_COLOR_SUM_EXT, CONTEXT_BOOL(Fog.ColorSumEnabled),
      extra_EXT_secondary_color_ARB_vertex_program },
diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index b237063a6d..fcb06d49e9 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -1031,10 +1031,6 @@ struct gl_pixel_attrib
 
    /** glPixelZoom */
    GLfloat ZoomX, ZoomY;
-
-   /** GL_SGI_texture_color_table */
-   GLfloat TextureColorTableScale[4]; /**< RGBA */
-   GLfloat TextureColorTableBias[4];  /**< RGBA */
 };
 
 
@@ -1435,13 +1431,6 @@ struct gl_texture_unit
 
    /** Points to highest priority, complete and enabled texture object */
    struct gl_texture_object *_Current;
-
-   /** GL_SGI_texture_color_table */
-   /*@{*/
-   struct gl_color_table ColorTable;
-   struct gl_color_table ProxyColorTable;
-   GLboolean ColorTableEnabled;
-   /*@}*/
 };
 
 
@@ -2859,7 +2848,6 @@ struct gl_extensions
    GLboolean NV_vertex_program;
    GLboolean NV_vertex_program1_1;
    GLboolean OES_read_format;
-   GLboolean SGI_texture_color_table;
    GLboolean SGIS_generate_mipmap;
    GLboolean SGIS_texture_edge_clamp;
    GLboolean SGIS_texture_lod;
diff --git a/src/mesa/main/pixel.c b/src/mesa/main/pixel.c
index 0254980b89..08ef8fc844 100644
--- a/src/mesa/main/pixel.c
+++ b/src/mesa/main/pixel.c
@@ -685,9 +685,6 @@ _mesa_init_pixel( struct gl_context *ctx )
    init_pixelmap(&ctx->PixelMaps.GtoG);
    init_pixelmap(&ctx->PixelMaps.BtoB);
    init_pixelmap(&ctx->PixelMaps.AtoA);
-   /* GL_SGI_texture_color_table */
-   ASSIGN_4V(ctx->Pixel.TextureColorTableScale, 1.0, 1.0, 1.0, 1.0);
-   ASSIGN_4V(ctx->Pixel.TextureColorTableBias, 0.0, 0.0, 0.0, 0.0);
 
    if (ctx->Visual.doubleBufferMode) {
       ctx->Pixel.ReadBuffer = GL_BACK;
diff --git a/src/mesa/main/texstate.c b/src/mesa/main/texstate.c
index f4d77189f2..41d531f597 100644
--- a/src/mesa/main/texstate.c
+++ b/src/mesa/main/texstate.c
@@ -818,9 +818,6 @@ _mesa_free_texture_data(struct gl_context *ctx)
    /* Free proxy texture objects */
    for (tgt = 0; tgt < NUM_TEXTURE_TARGETS; tgt++)
       ctx->Driver.DeleteTexture(ctx, ctx->Texture.ProxyTex[tgt]);
-
-   for (u = 0; u < Elements(ctx->Texture.Unit); u++)
-      _mesa_free_colortable_data(&ctx->Texture.Unit[u].ColorTable);
 }
 
 
diff --git a/src/mesa/swrast/s_texcombine.c b/src/mesa/swrast/s_texcombine.c
index 99c44413fb..0c8cc9ff37 100644
--- a/src/mesa/swrast/s_texcombine.c
+++ b/src/mesa/swrast/s_texcombine.c
@@ -713,11 +713,6 @@ _swrast_texture_span( struct gl_context *ctx, SWspan *span )
          swrast->TextureSample[unit]( ctx, texUnit->_Current, span->end,
                                       texcoords, lambda, texels );
 
-         /* GL_SGI_texture_color_table */
-         if (texUnit->ColorTableEnabled) {
-            _mesa_lookup_rgba_float(&texUnit->ColorTable, span->end, texels);
-         }
-
          /* GL_EXT_texture_swizzle */
          if (curObj->_Swizzle != SWIZZLE_NOOP) {
             swizzle_texels(curObj->_Swizzle, span->end, texels);