From: Brian Paul <brian.paul@tungstengraphics.com>
Date: Tue, 21 Jan 2003 21:47:45 +0000 (+0000)
Subject: GL_SGI_texture_color_table extension (Eric Plante)
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=418ac00e7583bf3136816a43b3357e0d0b0c776d;p=mesa.git

GL_SGI_texture_color_table extension (Eric Plante)
---

diff --git a/src/mesa/main/colortab.c b/src/mesa/main/colortab.c
index fb5c94259dd..04625c6c826 100644
--- a/src/mesa/main/colortab.c
+++ b/src/mesa/main/colortab.c
@@ -1,10 +1,10 @@
-/* $Id: colortab.c,v 1.46 2002/10/24 23:57:19 brianp Exp $ */
+/* $Id: colortab.c,v 1.47 2003/01/21 21:47:45 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
- * Version:  4.1
+ * Version:  5.1
  *
- * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.
+ * 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"),
@@ -257,6 +257,30 @@ _mesa_ColorTable( GLenum target, GLenum internalFormat,
          table = &ctx->ProxyColorTable;
          proxy = GL_TRUE;
          break;
+      case GL_TEXTURE_COLOR_TABLE_SGI:
+         if (!ctx->Extensions.SGI_texture_color_table) {
+            _mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(target)");
+            return;
+         }
+         table = &ctx->TextureColorTable;
+         floatTable = GL_TRUE;
+         rScale = ctx->Texture.ColorTableScale[0];
+         gScale = ctx->Texture.ColorTableScale[1];
+         bScale = ctx->Texture.ColorTableScale[2];
+         aScale = ctx->Texture.ColorTableScale[3];
+         rBias = ctx->Texture.ColorTableBias[0];
+         gBias = ctx->Texture.ColorTableBias[1];
+         bBias = ctx->Texture.ColorTableBias[2];
+         aBias = ctx->Texture.ColorTableBias[3];
+         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 = &ctx->ProxyTextureColorTable;
+         proxy = GL_TRUE;
+         break;
       case GL_POST_CONVOLUTION_COLOR_TABLE:
          table = &ctx->PostConvolutionColorTable;
          floatTable = GL_TRUE;
@@ -486,6 +510,21 @@ _mesa_ColorSubTable( GLenum target, GLsizei start,
          bBias = ctx->Pixel.ColorTableBias[2];
          aBias = ctx->Pixel.ColorTableBias[3];
          break;
+      case GL_TEXTURE_COLOR_TABLE_SGI:
+         if (!ctx->Extensions.SGI_texture_color_table) {
+            _mesa_error(ctx, GL_INVALID_ENUM, "glColorSubTable(target)");
+            return;
+         }
+         table = &ctx->TextureColorTable;
+         rScale = ctx->Texture.ColorTableScale[0];
+         gScale = ctx->Texture.ColorTableScale[1];
+         bScale = ctx->Texture.ColorTableScale[2];
+         aScale = ctx->Texture.ColorTableScale[3];
+         rBias = ctx->Texture.ColorTableBias[0];
+         gBias = ctx->Texture.ColorTableBias[1];
+         bBias = ctx->Texture.ColorTableBias[2];
+         aBias = ctx->Texture.ColorTableBias[3];
+         break;
       case GL_POST_CONVOLUTION_COLOR_TABLE:
          table = &ctx->PostConvolutionColorTable;
          rScale = ctx->Pixel.PCCTscale[0];
@@ -683,6 +722,13 @@ _mesa_GetColorTable( GLenum target, GLenum format,
       case GL_COLOR_TABLE:
          table = &ctx->ColorTable;
          break;
+      case GL_TEXTURE_COLOR_TABLE_SGI:
+         if (!ctx->Extensions.SGI_texture_color_table) {
+            _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTable(target)");
+            return;
+         }
+         table = &ctx->TextureColorTable;
+         break;
       case GL_POST_CONVOLUTION_COLOR_TABLE:
          table = &ctx->PostConvolutionColorTable;
          break;
@@ -865,6 +911,28 @@ _mesa_ColorTableParameterfv(GLenum target, GLenum pname, const GLfloat *params)
             return;
          }
          break;
+      case GL_TEXTURE_COLOR_TABLE_SGI:
+         if (!ctx->Extensions.SGI_texture_color_table) {
+            _mesa_error(ctx, GL_INVALID_ENUM, "glColorTableParameter(target)");
+            return;
+         }
+         if (pname == GL_COLOR_TABLE_SCALE_SGI) {
+            ctx->Texture.ColorTableScale[0] = params[0];
+            ctx->Texture.ColorTableScale[1] = params[1];
+            ctx->Texture.ColorTableScale[2] = params[2];
+            ctx->Texture.ColorTableScale[3] = params[3];
+         }
+         else if (pname == GL_COLOR_TABLE_BIAS_SGI) {
+            ctx->Texture.ColorTableBias[0] = params[0];
+            ctx->Texture.ColorTableBias[1] = params[1];
+            ctx->Texture.ColorTableBias[2] = params[2];
+            ctx->Texture.ColorTableBias[3] = params[3];
+         }
+         else {
+            _mesa_error(ctx, GL_INVALID_ENUM, "glColorTableParameterfv(pname)");
+            return;
+         }
+         break;
       case GL_POST_CONVOLUTION_COLOR_TABLE_SGI:
          if (pname == GL_COLOR_TABLE_SCALE_SGI) {
             ctx->Pixel.PCCTscale[0] = params[0];
@@ -916,6 +984,7 @@ _mesa_ColorTableParameteriv(GLenum target, GLenum pname, const GLint *params)
 {
    GLfloat fparams[4];
    if (pname == GL_COLOR_TABLE_SGI ||
+       pname == GL_TEXTURE_COLOR_TABLE_SGI ||
        pname == GL_POST_CONVOLUTION_COLOR_TABLE_SGI ||
        pname == GL_POST_COLOR_MATRIX_COLOR_TABLE_SGI) {
       /* four values */
@@ -999,6 +1068,34 @@ _mesa_GetColorTableParameterfv( GLenum target, GLenum pname, GLfloat *params )
       case GL_PROXY_COLOR_TABLE:
          table = &ctx->ProxyColorTable;
          break;
+      case GL_TEXTURE_COLOR_TABLE_SGI:
+         if (!ctx->Extensions.SGI_texture_color_table) {
+            _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameter(target)");
+            return;
+         }
+         table = &ctx->TextureColorTable;
+         if (pname == GL_COLOR_TABLE_SCALE_SGI) {
+            params[0] = ctx->Texture.ColorTableScale[0];
+            params[1] = ctx->Texture.ColorTableScale[1];
+            params[2] = ctx->Texture.ColorTableScale[2];
+            params[3] = ctx->Texture.ColorTableScale[3];
+            return;
+         }
+         else if (pname == GL_COLOR_TABLE_BIAS_SGI) {
+            params[0] = ctx->Texture.ColorTableBias[0];
+            params[1] = ctx->Texture.ColorTableBias[1];
+            params[2] = ctx->Texture.ColorTableBias[2];
+            params[3] = ctx->Texture.ColorTableBias[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 = &ctx->ProxyTextureColorTable;
+         break;
       case GL_POST_CONVOLUTION_COLOR_TABLE:
          table = &ctx->PostConvolutionColorTable;
          if (pname == GL_COLOR_TABLE_SCALE_SGI) {
@@ -1054,22 +1151,22 @@ _mesa_GetColorTableParameterfv( GLenum target, GLenum pname, GLfloat *params )
          *params = (GLfloat) table->Size;
          break;
       case GL_COLOR_TABLE_RED_SIZE:
-         *params = table->RedSize;
+         *params = (GLfloat) table->RedSize;
          break;
       case GL_COLOR_TABLE_GREEN_SIZE:
-         *params = table->GreenSize;
+         *params = (GLfloat) table->GreenSize;
          break;
       case GL_COLOR_TABLE_BLUE_SIZE:
-         *params = table->BlueSize;
+         *params = (GLfloat) table->BlueSize;
          break;
       case GL_COLOR_TABLE_ALPHA_SIZE:
-         *params = table->AlphaSize;
+         *params = (GLfloat) table->AlphaSize;
          break;
       case GL_COLOR_TABLE_LUMINANCE_SIZE:
-         *params = table->LuminanceSize;
+         *params = (GLfloat) table->LuminanceSize;
          break;
       case GL_COLOR_TABLE_INTENSITY_SIZE:
-         *params = table->IntensitySize;
+         *params = (GLfloat) table->IntensitySize;
          break;
       default:
          _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameterfv(pname)" );
@@ -1145,6 +1242,34 @@ _mesa_GetColorTableParameteriv( GLenum target, GLenum pname, GLint *params )
       case GL_PROXY_COLOR_TABLE:
          table = &ctx->ProxyColorTable;
          break;
+      case GL_TEXTURE_COLOR_TABLE_SGI:
+         if (!ctx->Extensions.SGI_texture_color_table) {
+            _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameter(target)");
+            return;
+         }
+         table = &ctx->TextureColorTable;
+         if (pname == GL_COLOR_TABLE_SCALE_SGI) {
+            params[0] = (GLint) ctx->Texture.ColorTableScale[0];
+            params[1] = (GLint) ctx->Texture.ColorTableScale[1];
+            params[2] = (GLint) ctx->Texture.ColorTableScale[2];
+            params[3] = (GLint) ctx->Texture.ColorTableScale[3];
+            return;
+         }
+         else if (pname == GL_COLOR_TABLE_BIAS_SGI) {
+            params[0] = (GLint) ctx->Texture.ColorTableBias[0];
+            params[1] = (GLint) ctx->Texture.ColorTableBias[1];
+            params[2] = (GLint) ctx->Texture.ColorTableBias[2];
+            params[3] = (GLint) ctx->Texture.ColorTableBias[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 = &ctx->ProxyTextureColorTable;
+         break;
       case GL_POST_CONVOLUTION_COLOR_TABLE:
          table = &ctx->PostConvolutionColorTable;
          if (pname == GL_COLOR_TABLE_SCALE_SGI) {
diff --git a/src/mesa/main/context.c b/src/mesa/main/context.c
index 2d43652c8a7..9dac955c8a7 100644
--- a/src/mesa/main/context.c
+++ b/src/mesa/main/context.c
@@ -1,4 +1,4 @@
-/* $Id: context.c,v 1.191 2003/01/14 04:55:45 brianp Exp $ */
+/* $Id: context.c,v 1.192 2003/01/21 21:47:45 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -1323,6 +1323,9 @@ init_attrib_groups( GLcontext *ctx )
       init_texture_unit( ctx, i );
    ctx->Texture.SharedPalette = GL_FALSE;
    _mesa_init_colortable(&ctx->Texture.Palette);
+   ASSIGN_4V(ctx->Texture.ColorTableScale, 1.0, 1.0, 1.0, 1.0);
+   ASSIGN_4V(ctx->Texture.ColorTableBias, 0.0, 0.0, 0.0, 0.0);
+   ctx->Texture.ColorTableEnabled = GL_FALSE;
 
    /* Transformation group */
    ctx->Transform.MatrixMode = GL_MODELVIEW;
@@ -1462,6 +1465,8 @@ init_attrib_groups( GLcontext *ctx )
    _mesa_init_colortable(&ctx->ProxyPostConvolutionColorTable);
    _mesa_init_colortable(&ctx->PostColorMatrixColorTable);
    _mesa_init_colortable(&ctx->ProxyPostColorMatrixColorTable);
+   _mesa_init_colortable(&ctx->TextureColorTable);
+   _mesa_init_colortable(&ctx->ProxyTextureColorTable);
 
    /* Vertex/fragment programs */
    ctx->Program.ErrorPos = -1;
@@ -2035,6 +2040,7 @@ _mesa_free_context_data( GLcontext *ctx )
    _mesa_free_colortable_data( &ctx->PostConvolutionColorTable );
    _mesa_free_colortable_data( &ctx->PostColorMatrixColorTable );
    _mesa_free_colortable_data( &ctx->Texture.Palette );
+   _mesa_free_colortable_data( &ctx->TextureColorTable );
 
    _math_matrix_dtr(&ctx->Viewport._WindowMap);
 
diff --git a/src/mesa/main/dlist.c b/src/mesa/main/dlist.c
index 2fcfb4a7034..f04bedc68e8 100644
--- a/src/mesa/main/dlist.c
+++ b/src/mesa/main/dlist.c
@@ -1,4 +1,4 @@
-/* $Id: dlist.c,v 1.101 2003/01/14 04:55:45 brianp Exp $ */
+/* $Id: dlist.c,v 1.102 2003/01/21 21:47:48 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -1141,7 +1141,8 @@ save_ColorTableParameterfv(GLenum target, GLenum pname, const GLfloat *params)
       n[3].f = params[0];
       if (pname == GL_COLOR_TABLE_SGI ||
           pname == GL_POST_CONVOLUTION_COLOR_TABLE_SGI ||
-          pname == GL_POST_COLOR_MATRIX_COLOR_TABLE_SGI) {
+          pname == GL_POST_COLOR_MATRIX_COLOR_TABLE_SGI ||
+          pname == GL_TEXTURE_COLOR_TABLE_SGI) {
          n[4].f = params[1];
          n[5].f = params[2];
          n[6].f = params[3];
@@ -1169,7 +1170,8 @@ save_ColorTableParameteriv(GLenum target, GLenum pname, const GLint *params)
       n[3].i = params[0];
       if (pname == GL_COLOR_TABLE_SGI ||
           pname == GL_POST_CONVOLUTION_COLOR_TABLE_SGI ||
-          pname == GL_POST_COLOR_MATRIX_COLOR_TABLE_SGI) {
+          pname == GL_POST_COLOR_MATRIX_COLOR_TABLE_SGI ||
+          pname == GL_TEXTURE_COLOR_TABLE_SGI) {
          n[4].i = params[1];
          n[5].i = params[2];
          n[6].i = params[3];
diff --git a/src/mesa/main/enable.c b/src/mesa/main/enable.c
index 84d03112160..44c1e14015f 100644
--- a/src/mesa/main/enable.c
+++ b/src/mesa/main/enable.c
@@ -1,4 +1,4 @@
-/* $Id: enable.c,v 1.72 2003/01/14 04:55:45 brianp Exp $ */
+/* $Id: enable.c,v 1.73 2003/01/21 21:47:49 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -691,6 +691,13 @@ void _mesa_set_enable( GLcontext *ctx, GLenum cap, GLboolean state )
          FLUSH_VERTICES(ctx, _NEW_PIXEL);
          ctx->Pixel.PostColorMatrixColorTableEnabled = state;
          break;
+      case GL_TEXTURE_COLOR_TABLE_SGI:
+         CHECK_EXTENSION(SGI_texture_color_table, cap);
+         if (ctx->Texture.ColorTableEnabled == state)
+            return;
+         FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+         ctx->Texture.ColorTableEnabled = state;
+         break;
 
       /* GL_EXT_convolution */
       case GL_CONVOLUTION_1D:
diff --git a/src/mesa/main/extensions.c b/src/mesa/main/extensions.c
index 296308c4370..7e1f2038723 100644
--- a/src/mesa/main/extensions.c
+++ b/src/mesa/main/extensions.c
@@ -1,4 +1,4 @@
-/* $Id: extensions.c,v 1.87 2003/01/21 15:49:14 brianp Exp $ */
+/* $Id: extensions.c,v 1.88 2003/01/21 21:47:49 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -122,6 +122,7 @@ static struct {
    { OFF, "GL_NV_vertex_program1_1",           F(NV_vertex_program1_1) },
    { OFF, "GL_SGI_color_matrix",               F(SGI_color_matrix) },
    { OFF, "GL_SGI_color_table",                F(SGI_color_table) },
+   { OFF, "GL_SGI_texture_color_table",        F(SGI_texture_color_table) },
    { OFF, "GL_SGIS_generate_mipmap",           F(SGIS_generate_mipmap) },
    { OFF, "GL_SGIS_pixel_texture",             F(SGIS_pixel_texture) },
    { OFF, "GL_SGIS_texture_border_clamp",      F(ARB_texture_border_clamp) },
@@ -199,6 +200,7 @@ _mesa_enable_sw_extensions(GLcontext *ctx)
 #endif
       "GL_SGI_color_matrix",
       "GL_SGI_color_table",
+      "GL_SGI_texture_color_table",
       "GL_SGIS_generate_mipmap",
       "GL_SGIS_pixel_texture",
       "GL_SGIS_texture_edge_clamp",
diff --git a/src/mesa/main/get.c b/src/mesa/main/get.c
index 8eac97fb5d5..9541ab00fc8 100644
--- a/src/mesa/main/get.c
+++ b/src/mesa/main/get.c
@@ -1,4 +1,4 @@
-/* $Id: get.c,v 1.102 2003/01/21 15:45:39 brianp Exp $ */
+/* $Id: get.c,v 1.103 2003/01/21 21:47:50 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -1229,6 +1229,12 @@ _mesa_GetBooleanv( GLenum pname, GLboolean *params )
          *params = ctx->Pixel.PostColorMatrixColorTableEnabled;
          break;
 
+      /* GL_SGI_texture_color_table */
+      case GL_TEXTURE_COLOR_TABLE_SGI:
+         CHECK_EXTENSION_B(SGI_texture_color_table, pname);
+         *params = ctx->Texture.ColorTableEnabled;
+         break;
+
       /* GL_EXT_secondary_color */
       case GL_COLOR_SUM_EXT:
          CHECK_EXTENSION_B(EXT_secondary_color, pname);
@@ -2621,6 +2627,12 @@ _mesa_GetDoublev( GLenum pname, GLdouble *params )
          *params = (GLdouble) ctx->Pixel.PostColorMatrixColorTableEnabled;
          break;
 
+      /* GL_SGI_texture_color_table */
+      case GL_TEXTURE_COLOR_TABLE_SGI:
+         CHECK_EXTENSION_D(SGI_texture_color_table, pname);
+         *params = (GLdouble) ctx->Texture.ColorTableEnabled;
+         break;
+
       /* GL_EXT_secondary_color */
       case GL_COLOR_SUM_EXT:
          CHECK_EXTENSION_D(EXT_secondary_color, pname);
@@ -3987,6 +3999,12 @@ _mesa_GetFloatv( GLenum pname, GLfloat *params )
          *params = (GLfloat) ctx->Pixel.PostColorMatrixColorTableEnabled;
          break;
 
+      /* GL_SGI_texture_color_table */
+      case GL_TEXTURE_COLOR_TABLE_SGI:
+         CHECK_EXTENSION_F(SGI_texture_color_table, pname);
+         *params = (GLfloat) ctx->Texture.ColorTableEnabled;
+         break;
+
       /* GL_EXT_secondary_color */
       case GL_COLOR_SUM_EXT:
          CHECK_EXTENSION_F(EXT_secondary_color, pname);
@@ -5391,6 +5409,11 @@ _mesa_GetIntegerv( GLenum pname, GLint *params )
          *params = (GLint) ctx->Pixel.PostColorMatrixColorTableEnabled;
          break;
 
+      /* GL_SGI_texture_color_table */
+      case GL_TEXTURE_COLOR_TABLE_SGI:
+         CHECK_EXTENSION_I(SGI_texture_color_table, pname);
+         *params = (GLint) ctx->Texture.ColorTableEnabled;
+         break;
 
       /* GL_EXT_secondary_color */
       case GL_COLOR_SUM_EXT:
diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index 353dc0d471b..37268c2afc2 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -1,4 +1,4 @@
-/* $Id: mtypes.h,v 1.99 2003/01/21 15:49:15 brianp Exp $ */
+/* $Id: mtypes.h,v 1.100 2003/01/21 21:47:50 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -975,6 +975,10 @@ struct gl_texture_attrib {
    /* GL_EXT_shared_texture_palette */
    GLboolean SharedPalette;
    struct gl_color_table Palette;
+   /* GL_SGI_texture_color_table */
+   GLfloat ColorTableScale[4];
+   GLfloat ColorTableBias[4];
+   GLboolean ColorTableEnabled;
 };
 
 
@@ -1395,6 +1399,7 @@ struct gl_extensions {
    GLboolean NV_vertex_program1_1;
    GLboolean SGI_color_matrix;
    GLboolean SGI_color_table;
+   GLboolean SGI_texture_color_table;
    GLboolean SGIS_generate_mipmap;
    GLboolean SGIS_pixel_texture;
    GLboolean SGIS_texture_edge_clamp;
@@ -1715,6 +1720,8 @@ struct __GLcontextRec {
    struct gl_color_table ProxyPostConvolutionColorTable;
    struct gl_color_table PostColorMatrixColorTable;
    struct gl_color_table ProxyPostColorMatrixColorTable;
+   struct gl_color_table TextureColorTable;
+   struct gl_color_table ProxyTextureColorTable;
 
    struct program_state Program;             /* for vertex or fragment progs */
    struct vertex_program_state VertexProgram;      /* GL_NV_vertex_program */
diff --git a/src/mesa/swrast/s_texture.c b/src/mesa/swrast/s_texture.c
index cd86c76bd3d..bc1e14d9672 100644
--- a/src/mesa/swrast/s_texture.c
+++ b/src/mesa/swrast/s_texture.c
@@ -1,4 +1,4 @@
-/* $Id: s_texture.c,v 1.76 2003/01/21 15:49:19 brianp Exp $ */
+/* $Id: s_texture.c,v 1.77 2003/01/21 21:47:53 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -296,6 +296,198 @@
 #define K1BIT  32
 
 
+static void texture_table_lookup(const struct gl_color_table *table,
+                                 GLuint n, GLchan rgba[][4])
+{
+   ASSERT(table->FloatTable);
+   if (!table->Table || table->Size == 0)
+      return;
+
+   switch (table->Format) {
+      case GL_INTENSITY:
+         /* replace RGBA with I */
+         if (!table->FloatTable) {
+            const GLint max = table->Size - 1;
+            const GLfloat scale = (GLfloat) max;
+            const GLchan *lut = (const GLchan *) table->Table;
+            GLuint i;
+            for (i = 0; i < n; i++) {
+               GLint j = CHAN_TO_FLOAT(rgba[i][RCOMP])*scale;
+               GLchan c = lut[CLAMP(j, 0, 1)];
+               rgba[i][RCOMP] = rgba[i][GCOMP] =
+                  rgba[i][BCOMP] = rgba[i][ACOMP] = c;
+            }
+
+         }
+         else {
+            const GLint max = table->Size - 1;
+            const GLfloat scale = (GLfloat) max;
+            const GLfloat *lut = (const GLfloat *) table->Table;
+            GLuint i;
+            for (i = 0; i < n; i++) {
+               GLint j = CHAN_TO_FLOAT(rgba[i][RCOMP])*scale;
+               GLchan c;
+               CLAMPED_FLOAT_TO_CHAN(c, lut[j]);
+               rgba[i][RCOMP] = rgba[i][GCOMP] =
+                  rgba[i][BCOMP] = rgba[i][ACOMP] = c;
+            }
+         }
+         break;
+      case GL_LUMINANCE:
+         /* replace RGB with L */
+         if (!table->FloatTable) {
+            const GLint max = table->Size - 1;
+            const GLfloat scale = (GLfloat) max;
+            const GLchan *lut = (const GLchan *) table->Table;
+            GLuint i;
+            for (i = 0; i < n; i++) {
+               GLint j = CHAN_TO_FLOAT(rgba[i][RCOMP])*scale;
+               GLchan c = lut[j];
+               rgba[i][RCOMP] = rgba[i][GCOMP] = rgba[i][BCOMP] = c;
+            }
+         }
+         else {
+            const GLint max = table->Size - 1;
+            const GLfloat scale = (GLfloat) max;
+            const GLfloat *lut = (const GLfloat *) table->Table;
+            GLuint i;
+            for (i = 0; i < n; i++) {
+               GLint j = CHAN_TO_FLOAT(rgba[i][RCOMP])*scale;
+               GLchan c;
+               CLAMPED_FLOAT_TO_CHAN(c, lut[j]);
+               rgba[i][RCOMP] = rgba[i][GCOMP] = rgba[i][BCOMP] = c;
+            }
+         }
+         break;
+      case GL_ALPHA:
+         /* replace A with A */
+         if (!table->FloatTable) {
+            const GLint max = table->Size - 1;
+            const GLfloat scale = (GLfloat) max;
+            const GLchan *lut = (const GLchan *) table->Table;
+            GLuint i;
+            for (i = 0; i < n; i++) {
+               GLint j = CHAN_TO_FLOAT(rgba[i][ACOMP])*scale;
+               rgba[i][ACOMP] = lut[j];
+            }
+         }
+         else  {
+            const GLint max = table->Size - 1;
+            const GLfloat scale = (GLfloat) max;
+            const GLfloat *lut = (const GLfloat *) table->Table;
+            GLuint i;
+            for (i = 0; i < n; i++) {
+               GLint j = CHAN_TO_FLOAT(rgba[i][ACOMP])*scale;
+               CLAMPED_FLOAT_TO_CHAN(rgba[i][ACOMP], lut[j]);
+            }
+         }
+         break;
+      case GL_LUMINANCE_ALPHA:
+         /* replace RGBA with LLLA */
+         if (!table->FloatTable) {
+            const GLint max = table->Size - 1;
+            const GLfloat scale = (GLfloat) max;
+            const GLchan *lut = (const GLchan *) table->Table;
+            GLuint i;
+            for (i = 0; i < n; i++) {
+               GLint jL = CHAN_TO_FLOAT(rgba[i][RCOMP])*scale;
+               GLint jA = CHAN_TO_FLOAT(rgba[i][ACOMP])*scale;
+               GLchan luminance, alpha;
+               luminance = lut[jL * 2 + 0];
+               alpha     = lut[jA * 2 + 1];
+               rgba[i][RCOMP] = rgba[i][GCOMP] = rgba[i][BCOMP] = luminance;
+               rgba[i][ACOMP] = alpha;;
+            }
+         }
+         else {
+            const GLint max = table->Size - 1;
+            const GLfloat scale = (GLfloat) max;
+            const GLfloat *lut = (const GLfloat *) table->Table;
+            GLuint i;
+            for (i = 0; i < n; i++) {
+               GLint jL = CHAN_TO_FLOAT(rgba[i][RCOMP])*scale;
+               GLint jA = CHAN_TO_FLOAT(rgba[i][ACOMP])*scale;
+               GLchan luminance, alpha;
+               CLAMPED_FLOAT_TO_CHAN(luminance, lut[jL * 2 + 0]);
+               CLAMPED_FLOAT_TO_CHAN(alpha, lut[jA * 2 + 1]);
+               rgba[i][RCOMP] = rgba[i][GCOMP] = rgba[i][BCOMP] = luminance;
+               rgba[i][ACOMP] = alpha;;
+            }
+         }
+         break;
+      case GL_RGB:
+         /* replace RGB with RGB */
+         if (!table->FloatTable) {
+            const GLint max = table->Size - 1;
+            const GLfloat scale = (GLfloat) max;
+            const GLchan *lut = (const GLchan *) table->Table;
+            GLuint i;
+            for (i = 0; i < n; i++) {
+               GLint jR = CHAN_TO_FLOAT(rgba[i][RCOMP])*scale;
+               GLint jG = CHAN_TO_FLOAT(rgba[i][GCOMP])*scale;
+               GLint jB = CHAN_TO_FLOAT(rgba[i][BCOMP])*scale;
+               rgba[i][RCOMP] = lut[jR * 3 + 0];
+               rgba[i][GCOMP] = lut[jG * 3 + 1];
+               rgba[i][BCOMP] = lut[jB * 3 + 2];
+            }
+         }
+         else {
+            const GLint max = table->Size - 1;
+            const GLfloat scale = (GLfloat) max;
+            const GLfloat *lut = (const GLfloat *) table->Table;
+            GLuint i;
+            for (i = 0; i < n; i++) {
+               GLint jR = CHAN_TO_FLOAT(rgba[i][RCOMP])*scale;
+               GLint jG = CHAN_TO_FLOAT(rgba[i][GCOMP])*scale;
+               GLint jB = CHAN_TO_FLOAT(rgba[i][BCOMP])*scale;
+               CLAMPED_FLOAT_TO_CHAN(rgba[i][RCOMP], lut[jR * 3 + 0]);
+               CLAMPED_FLOAT_TO_CHAN(rgba[i][GCOMP], lut[jG * 3 + 1]);
+               CLAMPED_FLOAT_TO_CHAN(rgba[i][BCOMP], lut[jB * 3 + 2]);
+            }
+         }
+         break;
+      case GL_RGBA:
+         /* replace RGBA with RGBA */
+         if (!table->FloatTable) {
+            const GLint max = table->Size - 1;
+            const GLfloat scale = (GLfloat) max;
+            const GLchan *lut = (const GLchan *) table->Table;
+            GLuint i;
+            for (i = 0; i < n; i++) {
+               GLint jR = CHAN_TO_FLOAT(rgba[i][RCOMP])*scale;
+               GLint jG = CHAN_TO_FLOAT(rgba[i][GCOMP])*scale;
+               GLint jB = CHAN_TO_FLOAT(rgba[i][BCOMP])*scale;
+               GLint jA = CHAN_TO_FLOAT(rgba[i][ACOMP])*scale;
+               rgba[i][RCOMP] = lut[jR * 4 + 0];
+               rgba[i][GCOMP] = lut[jG * 4 + 1];
+               rgba[i][BCOMP] = lut[jB * 4 + 2];
+               rgba[i][ACOMP] = lut[jA * 4 + 3];
+            }
+         }
+         else {
+            const GLint max = table->Size - 1;
+            const GLfloat scale = (GLfloat) max;
+            const GLfloat *lut = (const GLfloat *) table->Table;
+            GLuint i;
+            for (i = 0; i < n; i++) {
+               GLint jR = CHAN_TO_FLOAT(rgba[i][RCOMP])*scale;
+               GLint jG = CHAN_TO_FLOAT(rgba[i][GCOMP])*scale;
+               GLint jB = CHAN_TO_FLOAT(rgba[i][BCOMP])*scale;
+               GLint jA = CHAN_TO_FLOAT(rgba[i][ACOMP])*scale;
+               CLAMPED_FLOAT_TO_CHAN(rgba[i][RCOMP], lut[jR * 4 + 0]);
+               CLAMPED_FLOAT_TO_CHAN(rgba[i][GCOMP], lut[jG * 4 + 1]);
+               CLAMPED_FLOAT_TO_CHAN(rgba[i][BCOMP], lut[jB * 4 + 2]);
+               CLAMPED_FLOAT_TO_CHAN(rgba[i][ACOMP], lut[jA * 4 + 3]);
+            }
+         }
+         break;
+      default:
+         _mesa_problem(NULL, "Bad format in _mesa_lookup_rgba");
+         return;
+   }
+}
+
+
 
 /*
  * Get texture palette entry.
@@ -672,6 +864,10 @@ sample_nearest_1d( GLcontext *ctx, GLuint texUnit,
    for (i=0;i<n;i++) {
       sample_1d_nearest(ctx, tObj, image, texcoords[i], rgba[i]);
    }
+   if (ctx->Texture.ColorTableEnabled) {
+      texture_table_lookup(&ctx->TextureColorTable, n, rgba);
+   }
+   
 }
 
 
@@ -688,6 +884,9 @@ sample_linear_1d( GLcontext *ctx, GLuint texUnit,
    for (i=0;i<n;i++) {
       sample_1d_linear(ctx, tObj, image, texcoords[i], rgba[i]);
    }
+   if (ctx->Texture.ColorTableEnabled) {
+      texture_table_lookup(&ctx->TextureColorTable, n, rgba);
+   }
 }
 
 
@@ -764,6 +963,9 @@ sample_lambda_1d( GLcontext *ctx, GLuint texUnit,
          return;
       }
    }
+   if (ctx->Texture.ColorTableEnabled) {
+      texture_table_lookup(&ctx->TextureColorTable, n, rgba);
+   }
 }
 
 
@@ -1145,6 +1347,9 @@ sample_nearest_2d( GLcontext *ctx, GLuint texUnit,
    for (i=0;i<n;i++) {
       sample_2d_nearest(ctx, tObj, image, texcoords[i], rgba[i]);
    }
+   if (ctx->Texture.ColorTableEnabled) {
+      texture_table_lookup(&ctx->TextureColorTable, n, rgba);
+   }
 }
 
 
@@ -1161,6 +1366,9 @@ sample_linear_2d( GLcontext *ctx, GLuint texUnit,
    for (i=0;i<n;i++) {
       sample_2d_linear(ctx, tObj, image, texcoords[i], rgba[i]);
    }
+   if (ctx->Texture.ColorTableEnabled) {
+      texture_table_lookup(&ctx->TextureColorTable, n, rgba);
+   }
 }
 
 
@@ -1352,6 +1560,9 @@ sample_lambda_2d( GLcontext *ctx, GLuint texUnit,
          _mesa_problem(ctx, "Bad mag filter in sample_lambda_2d");
       }
    }
+   if (ctx->Texture.ColorTableEnabled) {
+      texture_table_lookup(&ctx->TextureColorTable, n, rgba);
+   }
 }
 
 
@@ -1690,6 +1901,9 @@ sample_nearest_3d(GLcontext *ctx, GLuint texUnit,
    for (i=0;i<n;i++) {
       sample_3d_nearest(ctx, tObj, image, texcoords[i], rgba[i]);
    }
+   if (ctx->Texture.ColorTableEnabled) {
+      texture_table_lookup(&ctx->TextureColorTable, n, rgba);
+   }
 }
 
 
@@ -1706,6 +1920,9 @@ sample_linear_3d( GLcontext *ctx, GLuint texUnit,
    for (i=0;i<n;i++) {
       sample_3d_linear(ctx, tObj, image, texcoords[i], rgba[i]);
    }
+   if (ctx->Texture.ColorTableEnabled) {
+      texture_table_lookup(&ctx->TextureColorTable, n, rgba);
+   }
 }
 
 
@@ -1781,6 +1998,9 @@ sample_lambda_3d( GLcontext *ctx, GLuint texUnit,
          return;
       }
    }
+   if (ctx->Texture.ColorTableEnabled) {
+      texture_table_lookup(&ctx->TextureColorTable, n, rgba);
+   }
 }
 
 
@@ -1879,6 +2099,9 @@ sample_nearest_cube(GLcontext *ctx, GLuint texUnit,
       sample_2d_nearest(ctx, tObj, images[tObj->BaseLevel],
                         newCoord, rgba[i]);
    }
+   if (ctx->Texture.ColorTableEnabled) {
+      texture_table_lookup(&ctx->TextureColorTable, n, rgba);
+   }
 }
 
 
@@ -1897,6 +2120,9 @@ sample_linear_cube(GLcontext *ctx, GLuint texUnit,
       sample_2d_linear(ctx, tObj, images[tObj->BaseLevel],
                        newCoord, rgba[i]);
    }
+   if (ctx->Texture.ColorTableEnabled) {
+      texture_table_lookup(&ctx->TextureColorTable, n, rgba);
+   }
 }
 
 
@@ -1916,6 +2142,9 @@ sample_cube_nearest_mipmap_nearest(GLcontext *ctx,
       images = choose_cube_face(tObj, texcoord[i], newCoord);
       sample_2d_nearest(ctx, tObj, images[level], newCoord, rgba[i]);
    }
+   if (ctx->Texture.ColorTableEnabled) {
+      texture_table_lookup(&ctx->TextureColorTable, n, rgba);
+   }
 }
 
 
@@ -1935,6 +2164,9 @@ sample_cube_linear_mipmap_nearest(GLcontext *ctx,
       images = choose_cube_face(tObj, texcoord[i], newCoord);
       sample_2d_linear(ctx, tObj, images[level], newCoord, rgba[i]);
    }
+   if (ctx->Texture.ColorTableEnabled) {
+      texture_table_lookup(&ctx->TextureColorTable, n, rgba);
+   }
 }
 
 
@@ -1967,6 +2199,9 @@ sample_cube_nearest_mipmap_linear(GLcontext *ctx,
          rgba[i][ACOMP] = CHAN_CAST ((1.0F-f) * t0[ACOMP] + f * t1[ACOMP]);
       }
    }
+   if (ctx->Texture.ColorTableEnabled) {
+      texture_table_lookup(&ctx->TextureColorTable, n, rgba);
+   }
 }
 
 
@@ -1999,6 +2234,9 @@ sample_cube_linear_mipmap_linear(GLcontext *ctx,
          rgba[i][ACOMP] = CHAN_CAST ((1.0F-f) * t0[ACOMP] + f * t1[ACOMP]);
       }
    }
+   if (ctx->Texture.ColorTableEnabled) {
+      texture_table_lookup(&ctx->TextureColorTable, n, rgba);
+   }
 }
 
 
@@ -2064,6 +2302,9 @@ sample_lambda_cube( GLcontext *ctx, GLuint texUnit,
          _mesa_problem(ctx, "Bad mag filter in sample_lambda_cube");
       }
    }
+   if (ctx->Texture.ColorTableEnabled) {
+      texture_table_lookup(&ctx->TextureColorTable, n, rgba);
+   }
 }
 
 
@@ -2123,6 +2364,9 @@ sample_nearest_rect(GLcontext *ctx, GLuint texUnit,
 
       (*img->FetchTexel)(img, col, row, 0, (GLvoid *) rgba[i]);
    }
+   if (ctx->Texture.ColorTableEnabled) {
+      texture_table_lookup(&ctx->TextureColorTable, n, rgba);
+   }
 }
 
 
@@ -2211,6 +2455,9 @@ sample_linear_rect(GLcontext *ctx, GLuint texUnit,
       rgba[i][3] = 
 	  (GLchan) (w00 * t00[3] + w10 * t10[3] + w01 * t01[3] + w11 * t11[3]);
    }
+   if (ctx->Texture.ColorTableEnabled) {
+      texture_table_lookup(&ctx->TextureColorTable, n, rgba);
+   }
 }
 
 
@@ -2248,6 +2495,9 @@ sample_lambda_rect( GLcontext *ctx, GLuint texUnit,
                              texcoords + magStart, NULL, rgba + magStart);
       }
    }
+   if (ctx->Texture.ColorTableEnabled) {
+      texture_table_lookup(&ctx->TextureColorTable, n, rgba);
+   }
 }