Added MesaLib-7.6

1 files changed, 1102 insertions, 0 deletions

diff --git a/mesalib/src/mesa/main/colortab.c b/mesalib/src/mesa/main/colortab.c
new file mode 100644
index 000000000..5a7de5f20
--- /dev/null
+++ b/mesalib/src/mesa/main/colortab.c
@@ -0,0 +1,1102 @@
+/*
+ * 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.
+ */
+
+
+#include "glheader.h"
+#include "bufferobj.h"
+#include "colortab.h"
+#include "context.h"
+#include "image.h"
+#include "macros.h"
+#include "state.h"
+#include "teximage.h"
+
+
+/**
+ * Given an internalFormat token passed to glColorTable,
+ * return the corresponding base format.
+ * Return -1 if invalid token.
+ */
+static GLint
+base_colortab_format( GLenum format )
+{
+   switch (format) {
+      case GL_ALPHA:
+      case GL_ALPHA4:
+      case GL_ALPHA8:
+      case GL_ALPHA12:
+      case GL_ALPHA16:
+         return GL_ALPHA;
+      case GL_LUMINANCE:
+      case GL_LUMINANCE4:
+      case GL_LUMINANCE8:
+      case GL_LUMINANCE12:
+      case GL_LUMINANCE16:
+         return GL_LUMINANCE;
+      case GL_LUMINANCE_ALPHA:
+      case GL_LUMINANCE4_ALPHA4:
+      case GL_LUMINANCE6_ALPHA2:
+      case GL_LUMINANCE8_ALPHA8:
+      case GL_LUMINANCE12_ALPHA4:
+      case GL_LUMINANCE12_ALPHA12:
+      case GL_LUMINANCE16_ALPHA16:
+         return GL_LUMINANCE_ALPHA;
+      case GL_INTENSITY:
+      case GL_INTENSITY4:
+      case GL_INTENSITY8:
+      case GL_INTENSITY12:
+      case GL_INTENSITY16:
+         return GL_INTENSITY;
+      case GL_RGB:
+      case GL_R3_G3_B2:
+      case GL_RGB4:
+      case GL_RGB5:
+      case GL_RGB8:
+      case GL_RGB10:
+      case GL_RGB12:
+      case GL_RGB16:
+         return GL_RGB;
+      case GL_RGBA:
+      case GL_RGBA2:
+      case GL_RGBA4:
+      case GL_RGB5_A1:
+      case GL_RGBA8:
+      case GL_RGB10_A2:
+      case GL_RGBA12:
+      case GL_RGBA16:
+         return GL_RGBA;
+      default:
+         return -1;  /* error */
+   }
+}
+
+
+
+/**
+ * Examine table's format and set the component sizes accordingly.
+ */
+static void
+set_component_sizes( struct gl_color_table *table )
+{
+   /* assuming the ubyte table */
+   const GLubyte sz = 8;
+
+   switch (table->_BaseFormat) {
+      case GL_ALPHA:
+         table->RedSize = 0;
+         table->GreenSize = 0;
+         table->BlueSize = 0;
+         table->AlphaSize = sz;
+         table->IntensitySize = 0;
+         table->LuminanceSize = 0;
+         break;
+      case GL_LUMINANCE:
+         table->RedSize = 0;
+         table->GreenSize = 0;
+         table->BlueSize = 0;
+         table->AlphaSize = 0;
+         table->IntensitySize = 0;
+         table->LuminanceSize = sz;
+         break;
+      case GL_LUMINANCE_ALPHA:
+         table->RedSize = 0;
+         table->GreenSize = 0;
+         table->BlueSize = 0;
+         table->AlphaSize = sz;
+         table->IntensitySize = 0;
+         table->LuminanceSize = sz;
+         break;
+      case GL_INTENSITY:
+         table->RedSize = 0;
+         table->GreenSize = 0;
+         table->BlueSize = 0;
+         table->AlphaSize = 0;
+         table->IntensitySize = sz;
+         table->LuminanceSize = 0;
+         break;
+      case GL_RGB:
+         table->RedSize = sz;
+         table->GreenSize = sz;
+         table->BlueSize = sz;
+         table->AlphaSize = 0;
+         table->IntensitySize = 0;
+         table->LuminanceSize = 0;
+         break;
+      case GL_RGBA:
+         table->RedSize = sz;
+         table->GreenSize = sz;
+         table->BlueSize = sz;
+         table->AlphaSize = sz;
+         table->IntensitySize = 0;
+         table->LuminanceSize = 0;
+         break;
+      default:
+         _mesa_problem(NULL, "unexpected format in set_component_sizes");
+   }
+}
+
+
+
+/**
+ * Update/replace all or part of a color table.  Helper function
+ * used by _mesa_ColorTable() and _mesa_ColorSubTable().
+ * The table->Table buffer should already be allocated.
+ * \param start first entry to update
+ * \param count number of entries to update
+ * \param format format of user-provided table data
+ * \param type datatype of user-provided table data
+ * \param data user-provided table data
+ * \param [rgba]Scale - RGBA scale factors
+ * \param [rgba]Bias - RGBA bias factors
+ */
+static void
+store_colortable_entries(GLcontext *ctx, struct gl_color_table *table,
+			 GLsizei start, GLsizei count,
+			 GLenum format, GLenum type, const GLvoid *data,
+			 GLfloat rScale, GLfloat rBias,
+			 GLfloat gScale, GLfloat gBias,
+			 GLfloat bScale, GLfloat bBias,
+			 GLfloat aScale, GLfloat aBias)
+{
+   data = _mesa_map_validate_pbo_source(ctx, 
+                                        1, &ctx->Unpack, count, 1, 1,
+                                        format, type, data,
+                                        "glColor[Sub]Table");
+   if (!data)
+      return;
+
+   {
+      /* convert user-provided data to GLfloat values */
+      GLfloat tempTab[MAX_COLOR_TABLE_SIZE * 4];
+      GLfloat *tableF;
+      GLint i;
+
+      _mesa_unpack_color_span_float(ctx,
+                                    count,         /* number of pixels */
+                                    table->_BaseFormat, /* dest format */
+                                    tempTab,       /* dest address */
+                                    format, type,  /* src format/type */
+                                    data,          /* src data */
+                                    &ctx->Unpack,
+                                    IMAGE_CLAMP_BIT); /* transfer ops */
+
+      /* the destination */
+      tableF = table->TableF;
+
+      /* Apply scale & bias & clamp now */
+      switch (table->_BaseFormat) {
+         case GL_INTENSITY:
+            for (i = 0; i < count; i++) {
+               GLuint j = start + i;
+               tableF[j] = CLAMP(tempTab[i] * rScale + rBias, 0.0F, 1.0F);
+            }
+            break;
+         case GL_LUMINANCE:
+            for (i = 0; i < count; i++) {
+               GLuint j = start + i;
+               tableF[j] = CLAMP(tempTab[i] * rScale + rBias, 0.0F, 1.0F);
+            }
+            break;
+         case GL_ALPHA:
+            for (i = 0; i < count; i++) {
+               GLuint j = start + i;
+               tableF[j] = CLAMP(tempTab[i] * aScale + aBias, 0.0F, 1.0F);
+            }
+            break;
+         case GL_LUMINANCE_ALPHA:
+            for (i = 0; i < count; i++) {
+               GLuint j = start + i;
+               tableF[j*2+0] = CLAMP(tempTab[i*2+0] * rScale + rBias, 0.0F, 1.0F);
+               tableF[j*2+1] = CLAMP(tempTab[i*2+1] * aScale + aBias, 0.0F, 1.0F);
+            }
+            break;
+         case GL_RGB:
+            for (i = 0; i < count; i++) {
+               GLuint j = start + i;
+               tableF[j*3+0] = CLAMP(tempTab[i*3+0] * rScale + rBias, 0.0F, 1.0F);
+               tableF[j*3+1] = CLAMP(tempTab[i*3+1] * gScale + gBias, 0.0F, 1.0F);
+               tableF[j*3+2] = CLAMP(tempTab[i*3+2] * bScale + bBias, 0.0F, 1.0F);
+            }
+            break;
+         case GL_RGBA:
+            for (i = 0; i < count; i++) {
+               GLuint j = start + i;
+               tableF[j*4+0] = CLAMP(tempTab[i*4+0] * rScale + rBias, 0.0F, 1.0F);
+               tableF[j*4+1] = CLAMP(tempTab[i*4+1] * gScale + gBias, 0.0F, 1.0F);
+               tableF[j*4+2] = CLAMP(tempTab[i*4+2] * bScale + bBias, 0.0F, 1.0F);
+               tableF[j*4+3] = CLAMP(tempTab[i*4+3] * aScale + aBias, 0.0F, 1.0F);
+            }
+            break;
+         default:
+            _mesa_problem(ctx, "Bad format in store_colortable_entries");
+            return;
+         }
+   }
+
+   /* update the ubyte table */
+   {
+      const GLint comps = _mesa_components_in_format(table->_BaseFormat);
+      const GLfloat *tableF = table->TableF + start * comps;
+      GLubyte *tableUB = table->TableUB + start * comps;
+      GLint i;
+      for (i = 0; i < count * comps; i++) {
+         CLAMPED_FLOAT_TO_UBYTE(tableUB[i], tableF[i]);
+      }
+   }
+
+   _mesa_unmap_pbo_source(ctx, &ctx->Unpack);
+}
+
+
+
+void GLAPIENTRY
+_mesa_ColorTable( GLenum target, GLenum internalFormat,
+                  GLsizei width, GLenum format, GLenum type,
+                  const GLvoid *data )
+{
+   static const GLfloat one[4] = { 1.0, 1.0, 1.0, 1.0 };
+   static const GLfloat zero[4] = { 0.0, 0.0, 0.0, 0.0 };
+   GET_CURRENT_CONTEXT(ctx);
+   struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+   struct gl_texture_object *texObj = NULL;
+   struct gl_color_table *table = NULL;
+   GLboolean proxy = GL_FALSE;
+   GLint baseFormat;
+   const GLfloat *scale = one, *bias = zero;
+   GLint comps;
+
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); /* too complex */
+
+   switch (target) {
+      case GL_SHARED_TEXTURE_PALETTE_EXT:
+         table = &ctx->Texture.Palette;
+         break;
+      case GL_COLOR_TABLE:
+         table = &ctx->ColorTable[COLORTABLE_PRECONVOLUTION];
+         scale = ctx->Pixel.ColorTableScale[COLORTABLE_PRECONVOLUTION];
+         bias = ctx->Pixel.ColorTableBias[COLORTABLE_PRECONVOLUTION];
+         break;
+      case GL_PROXY_COLOR_TABLE:
+         table = &ctx->ProxyColorTable[COLORTABLE_PRECONVOLUTION];
+         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 = &(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;
+      case GL_POST_CONVOLUTION_COLOR_TABLE:
+         table = &ctx->ColorTable[COLORTABLE_POSTCONVOLUTION];
+         scale = ctx->Pixel.ColorTableScale[COLORTABLE_POSTCONVOLUTION];
+         bias = ctx->Pixel.ColorTableBias[COLORTABLE_POSTCONVOLUTION];
+         break;
+      case GL_PROXY_POST_CONVOLUTION_COLOR_TABLE:
+         table = &ctx->ProxyColorTable[COLORTABLE_POSTCONVOLUTION];
+         proxy = GL_TRUE;
+         break;
+      case GL_POST_COLOR_MATRIX_COLOR_TABLE:
+         table = &ctx->ColorTable[COLORTABLE_POSTCOLORMATRIX];
+         scale = ctx->Pixel.ColorTableScale[COLORTABLE_POSTCOLORMATRIX];
+         bias = ctx->Pixel.ColorTableBias[COLORTABLE_POSTCOLORMATRIX];
+         break;
+      case GL_PROXY_POST_COLOR_MATRIX_COLOR_TABLE:
+         table = &ctx->ProxyColorTable[COLORTABLE_POSTCOLORMATRIX];
+         proxy = GL_TRUE;
+         break;
+      default:
+         /* try texture targets */
+         {
+            struct gl_texture_object *texobj
+               = _mesa_select_tex_object(ctx, texUnit, target);
+            if (texobj) {
+               table = &texobj->Palette;
+               proxy = _mesa_is_proxy_texture(target);
+            }
+            else {
+               _mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(target)");
+               return;
+            }
+         }
+   }
+
+   assert(table);
+
+   if (!_mesa_is_legal_format_and_type(ctx, format, type) ||
+       format == GL_INTENSITY) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glColorTable(format or type)");
+      return;
+   }
+
+   baseFormat = base_colortab_format(internalFormat);
+   if (baseFormat < 0) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(internalFormat)");
+      return;
+   }
+
+   if (width < 0 || (width != 0 && !_mesa_is_pow_two(width))) {
+      /* error */
+      if (proxy) {
+         table->Size = 0;
+         table->InternalFormat = (GLenum) 0;
+         table->_BaseFormat = (GLenum) 0;
+      }
+      else {
+         _mesa_error(ctx, GL_INVALID_VALUE, "glColorTable(width=%d)", width);
+      }
+      return;
+   }
+
+   if (width > (GLsizei) ctx->Const.MaxColorTableSize) {
+      if (proxy) {
+         table->Size = 0;
+         table->InternalFormat = (GLenum) 0;
+         table->_BaseFormat = (GLenum) 0;
+      }
+      else {
+         _mesa_error(ctx, GL_TABLE_TOO_LARGE, "glColorTable(width)");
+      }
+      return;
+   }
+
+   table->Size = width;
+   table->InternalFormat = internalFormat;
+   table->_BaseFormat = (GLenum) baseFormat;
+
+   comps = _mesa_components_in_format(table->_BaseFormat);
+   assert(comps > 0);  /* error should have been caught sooner */
+
+   if (!proxy) {
+      _mesa_free_colortable_data(table);
+
+      if (width > 0) {
+         table->TableF = (GLfloat *) _mesa_malloc(comps * width * sizeof(GLfloat));
+         table->TableUB = (GLubyte *) _mesa_malloc(comps * width * sizeof(GLubyte));
+
+	 if (!table->TableF || !table->TableUB) {
+	    _mesa_error(ctx, GL_OUT_OF_MEMORY, "glColorTable");
+	    return;
+	 }
+
+	 store_colortable_entries(ctx, table,
+				  0, width,  /* start, count */
+				  format, type, data,
+				  scale[0], bias[0],
+				  scale[1], bias[1],
+				  scale[2], bias[2],
+				  scale[3], bias[3]);
+      }
+   } /* proxy */
+
+   /* do this after the table's Type and Format are set */
+   set_component_sizes(table);
+
+   if (texObj || target == GL_SHARED_TEXTURE_PALETTE_EXT) {
+      /* texture object palette, texObj==NULL means the shared palette */
+      if (ctx->Driver.UpdateTexturePalette) {
+         (*ctx->Driver.UpdateTexturePalette)( ctx, texObj );
+      }
+   }
+
+   ctx->NewState |= _NEW_PIXEL;
+}
+
+
+
+void GLAPIENTRY
+_mesa_ColorSubTable( GLenum target, GLsizei start,
+                     GLsizei count, GLenum format, GLenum type,
+                     const GLvoid *data )
+{
+   static const GLfloat one[4] = { 1.0, 1.0, 1.0, 1.0 };
+   static const GLfloat zero[4] = { 0.0, 0.0, 0.0, 0.0 };
+   GET_CURRENT_CONTEXT(ctx);
+   struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+   struct gl_texture_object *texObj = NULL;
+   struct gl_color_table *table = NULL;
+   const GLfloat *scale = one, *bias = zero;
+
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+
+   switch (target) {
+      case GL_SHARED_TEXTURE_PALETTE_EXT:
+         table = &ctx->Texture.Palette;
+         break;
+      case GL_COLOR_TABLE:
+         table = &ctx->ColorTable[COLORTABLE_PRECONVOLUTION];
+         scale = ctx->Pixel.ColorTableScale[COLORTABLE_PRECONVOLUTION];
+         bias = ctx->Pixel.ColorTableBias[COLORTABLE_PRECONVOLUTION];
+         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;
+      case GL_POST_CONVOLUTION_COLOR_TABLE:
+         table = &ctx->ColorTable[COLORTABLE_POSTCONVOLUTION];
+         scale = ctx->Pixel.ColorTableScale[COLORTABLE_POSTCONVOLUTION];
+         bias = ctx->Pixel.ColorTableBias[COLORTABLE_POSTCONVOLUTION];
+         break;
+      case GL_POST_COLOR_MATRIX_COLOR_TABLE:
+         table = &ctx->ColorTable[COLORTABLE_POSTCOLORMATRIX];
+         scale = ctx->Pixel.ColorTableScale[COLORTABLE_POSTCOLORMATRIX];
+         bias = ctx->Pixel.ColorTableBias[COLORTABLE_POSTCOLORMATRIX];
+         break;
+      default:
+         /* try texture targets */
+         texObj = _mesa_select_tex_object(ctx, texUnit, target);
+         if (texObj && !_mesa_is_proxy_texture(target)) {
+            table = &texObj->Palette;
+         }
+         else {
+            _mesa_error(ctx, GL_INVALID_ENUM, "glColorSubTable(target)");
+            return;
+         }
+   }
+
+   assert(table);
+
+   if (!_mesa_is_legal_format_and_type(ctx, format, type) ||
+       format == GL_INTENSITY) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glColorSubTable(format or type)");
+      return;
+   }
+
+   if (count < 1) {
+      _mesa_error(ctx, GL_INVALID_VALUE, "glColorSubTable(count)");
+      return;
+   }
+
+   /* error should have been caught sooner */
+   assert(_mesa_components_in_format(table->_BaseFormat) > 0);
+
+   if (start + count > (GLint) table->Size) {
+      _mesa_error(ctx, GL_INVALID_VALUE, "glColorSubTable(count)");
+      return;
+   }
+
+   if (!table->TableF || !table->TableUB) {
+      /* a GL_OUT_OF_MEMORY error would have been recorded previously */
+      return;
+   }
+
+   store_colortable_entries(ctx, table, start, count,
+			    format, type, data,
+                            scale[0], bias[0],
+                            scale[1], bias[1],
+                            scale[2], bias[2],
+                            scale[3], bias[3]);
+
+   if (texObj || target == GL_SHARED_TEXTURE_PALETTE_EXT) {
+      /* per-texture object palette */
+      if (ctx->Driver.UpdateTexturePalette) {
+         (*ctx->Driver.UpdateTexturePalette)( ctx, texObj );
+      }
+   }
+
+   ctx->NewState |= _NEW_PIXEL;
+}
+
+
+
+void GLAPIENTRY
+_mesa_CopyColorTable(GLenum target, GLenum internalformat,
+                     GLint x, GLint y, GLsizei width)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+
+   /* Select buffer to read from */
+   ctx->Driver.CopyColorTable( ctx, target, internalformat, x, y, width );
+}
+
+
+
+void GLAPIENTRY
+_mesa_CopyColorSubTable(GLenum target, GLsizei start,
+                        GLint x, GLint y, GLsizei width)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+
+   ctx->Driver.CopyColorSubTable( ctx, target, start, x, y, width );
+}
+
+
+
+void GLAPIENTRY
+_mesa_GetColorTable( GLenum target, GLenum format,
+                     GLenum type, GLvoid *data )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+   struct gl_color_table *table = NULL;
+   GLfloat rgba[MAX_COLOR_TABLE_SIZE][4];
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+
+   if (ctx->NewState) {
+      _mesa_update_state(ctx);
+   }
+
+   switch (target) {
+      case GL_SHARED_TEXTURE_PALETTE_EXT:
+         table = &ctx->Texture.Palette;
+         break;
+      case GL_COLOR_TABLE:
+         table = &ctx->ColorTable[COLORTABLE_PRECONVOLUTION];
+         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;
+      case GL_POST_CONVOLUTION_COLOR_TABLE:
+         table = &ctx->ColorTable[COLORTABLE_POSTCONVOLUTION];
+         break;
+      case GL_POST_COLOR_MATRIX_COLOR_TABLE:
+         table = &ctx->ColorTable[COLORTABLE_POSTCOLORMATRIX];
+         break;
+      default:
+         /* try texture targets */
+         {
+            struct gl_texture_object *texobj
+               = _mesa_select_tex_object(ctx, texUnit, target);
+            if (texobj && !_mesa_is_proxy_texture(target)) {
+               table = &texobj->Palette;
+            }
+            else {
+               _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTable(target)");
+               return;
+            }
+         }
+   }
+
+   ASSERT(table);
+
+   if (table->Size <= 0) {
+      return;
+   }
+
+   switch (table->_BaseFormat) {
+   case GL_ALPHA:
+      {
+         GLuint i;
+         for (i = 0; i < table->Size; i++) {
+            rgba[i][RCOMP] = 0;
+            rgba[i][GCOMP] = 0;
+            rgba[i][BCOMP] = 0;
+            rgba[i][ACOMP] = table->TableF[i];
+         }
+      }
+      break;
+   case GL_LUMINANCE:
+      {
+         GLuint i;
+         for (i = 0; i < table->Size; i++) {
+            rgba[i][RCOMP] =
+            rgba[i][GCOMP] =
+            rgba[i][BCOMP] = table->TableF[i];
+            rgba[i][ACOMP] = 1.0F;
+         }
+      }
+      break;
+   case GL_LUMINANCE_ALPHA:
+      {
+         GLuint i;
+         for (i = 0; i < table->Size; i++) {
+            rgba[i][RCOMP] =
+            rgba[i][GCOMP] =
+            rgba[i][BCOMP] = table->TableF[i*2+0];
+            rgba[i][ACOMP] = table->TableF[i*2+1];
+         }
+      }
+      break;
+   case GL_INTENSITY:
+      {
+         GLuint i;
+         for (i = 0; i < table->Size; i++) {
+            rgba[i][RCOMP] =
+            rgba[i][GCOMP] =
+            rgba[i][BCOMP] =
+            rgba[i][ACOMP] = table->TableF[i];
+         }
+      }
+      break;
+   case GL_RGB:
+      {
+         GLuint i;
+         for (i = 0; i < table->Size; i++) {
+            rgba[i][RCOMP] = table->TableF[i*3+0];
+            rgba[i][GCOMP] = table->TableF[i*3+1];
+            rgba[i][BCOMP] = table->TableF[i*3+2];
+            rgba[i][ACOMP] = 1.0F;
+         }
+      }
+      break;
+   case GL_RGBA:
+      _mesa_memcpy(rgba, table->TableF, 4 * table->Size * sizeof(GLfloat));
+      break;
+   default:
+      _mesa_problem(ctx, "bad table format in glGetColorTable");
+      return;
+   }
+
+   data = _mesa_map_validate_pbo_dest(ctx, 
+                                      1, &ctx->Pack, table->Size, 1, 1,
+                                      format, type, data,
+                                      "glGetColorTable");
+   if (!data)
+      return;
+
+   _mesa_pack_rgba_span_float(ctx, table->Size, rgba,
+                              format, type, data, &ctx->Pack, 0x0);
+
+   _mesa_unmap_pbo_dest(ctx, &ctx->Pack);
+}
+
+
+
+void GLAPIENTRY
+_mesa_ColorTableParameterfv(GLenum target, GLenum pname, const GLfloat *params)
+{
+   GLfloat *scale, *bias;
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+
+   switch (target) {
+   case GL_COLOR_TABLE_SGI:
+      scale = ctx->Pixel.ColorTableScale[COLORTABLE_PRECONVOLUTION];
+      bias  = ctx->Pixel.ColorTableBias[COLORTABLE_PRECONVOLUTION];
+      break;
+   case GL_TEXTURE_COLOR_TABLE_SGI:
+      scale = ctx->Pixel.TextureColorTableScale;
+      bias  = ctx->Pixel.TextureColorTableBias;
+      break;
+   case GL_POST_CONVOLUTION_COLOR_TABLE_SGI:
+      scale = ctx->Pixel.ColorTableScale[COLORTABLE_POSTCONVOLUTION];
+      bias  = ctx->Pixel.ColorTableBias[COLORTABLE_POSTCONVOLUTION];
+      break;
+   case GL_POST_COLOR_MATRIX_COLOR_TABLE_SGI:
+      scale = ctx->Pixel.ColorTableScale[COLORTABLE_POSTCOLORMATRIX];
+      bias  = ctx->Pixel.ColorTableBias[COLORTABLE_POSTCOLORMATRIX];
+      break;
+   default:
+      _mesa_error(ctx, GL_INVALID_ENUM, "glColorTableParameter(target)");
+      return;
+   }
+
+   if (pname == GL_COLOR_TABLE_SCALE_SGI) {
+      COPY_4V(scale, params);
+   }
+   else if (pname == GL_COLOR_TABLE_BIAS_SGI) {
+      COPY_4V(bias, params);
+   }
+   else {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glColorTableParameterfv(pname)");
+      return;
+   }
+
+   ctx->NewState |= _NEW_PIXEL;
+}
+
+
+
+void GLAPIENTRY
+_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 */
+      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];
+   }
+   _mesa_ColorTableParameterfv(target, pname, fparams);
+}
+
+
+
+void GLAPIENTRY
+_mesa_GetColorTableParameterfv( GLenum target, GLenum pname, GLfloat *params )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+   struct gl_color_table *table = NULL;
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   switch (target) {
+      case GL_SHARED_TEXTURE_PALETTE_EXT:
+         table = &ctx->Texture.Palette;
+         break;
+      case GL_COLOR_TABLE:
+         table = &ctx->ColorTable[COLORTABLE_PRECONVOLUTION];
+         if (pname == GL_COLOR_TABLE_SCALE_SGI) {
+            COPY_4V(params, ctx->Pixel.ColorTableScale[COLORTABLE_PRECONVOLUTION]);
+            return;
+         }
+         else if (pname == GL_COLOR_TABLE_BIAS_SGI) {
+            COPY_4V(params, ctx->Pixel.ColorTableBias[COLORTABLE_PRECONVOLUTION]);
+            return;
+         }
+         break;
+      case GL_PROXY_COLOR_TABLE:
+         table = &ctx->ProxyColorTable[COLORTABLE_PRECONVOLUTION];
+         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;
+      case GL_POST_CONVOLUTION_COLOR_TABLE:
+         table = &ctx->ColorTable[COLORTABLE_POSTCONVOLUTION];
+         if (pname == GL_COLOR_TABLE_SCALE_SGI) {
+            COPY_4V(params, ctx->Pixel.ColorTableScale[COLORTABLE_POSTCONVOLUTION]);
+            return;
+         }
+         else if (pname == GL_COLOR_TABLE_BIAS_SGI) {
+            COPY_4V(params, ctx->Pixel.ColorTableBias[COLORTABLE_POSTCONVOLUTION]);
+            return;
+         }
+         break;
+      case GL_PROXY_POST_CONVOLUTION_COLOR_TABLE:
+         table = &ctx->ProxyColorTable[COLORTABLE_POSTCONVOLUTION];
+         break;
+      case GL_POST_COLOR_MATRIX_COLOR_TABLE:
+         table = &ctx->ColorTable[COLORTABLE_POSTCOLORMATRIX];
+         if (pname == GL_COLOR_TABLE_SCALE_SGI) {
+            COPY_4V(params, ctx->Pixel.ColorTableScale[COLORTABLE_POSTCOLORMATRIX]);
+            return;
+         }
+         else if (pname == GL_COLOR_TABLE_BIAS_SGI) {
+            COPY_4V(params, ctx->Pixel.ColorTableBias[COLORTABLE_POSTCOLORMATRIX]);
+            return;
+         }
+         break;
+      case GL_PROXY_POST_COLOR_MATRIX_COLOR_TABLE:
+         table = &ctx->ProxyColorTable[COLORTABLE_POSTCOLORMATRIX];
+         break;
+      default:
+         /* try texture targets */
+         {
+            struct gl_texture_object *texobj
+               = _mesa_select_tex_object(ctx, texUnit, target);
+            if (texobj) {
+               table = &texobj->Palette;
+            }
+            else {
+               _mesa_error(ctx, GL_INVALID_ENUM,
+                           "glGetColorTableParameterfv(target)");
+               return;
+            }
+         }
+   }
+
+   assert(table);
+
+   switch (pname) {
+      case GL_COLOR_TABLE_FORMAT:
+         *params = (GLfloat) table->InternalFormat;
+         break;
+      case GL_COLOR_TABLE_WIDTH:
+         *params = (GLfloat) table->Size;
+         break;
+      case GL_COLOR_TABLE_RED_SIZE:
+         *params = (GLfloat) table->RedSize;
+         break;
+      case GL_COLOR_TABLE_GREEN_SIZE:
+         *params = (GLfloat) table->GreenSize;
+         break;
+      case GL_COLOR_TABLE_BLUE_SIZE:
+         *params = (GLfloat) table->BlueSize;
+         break;
+      case GL_COLOR_TABLE_ALPHA_SIZE:
+         *params = (GLfloat) table->AlphaSize;
+         break;
+      case GL_COLOR_TABLE_LUMINANCE_SIZE:
+         *params = (GLfloat) table->LuminanceSize;
+         break;
+      case GL_COLOR_TABLE_INTENSITY_SIZE:
+         *params = (GLfloat) table->IntensitySize;
+         break;
+      default:
+         _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameterfv(pname)" );
+         return;
+   }
+}
+
+
+
+void GLAPIENTRY
+_mesa_GetColorTableParameteriv( GLenum target, GLenum pname, GLint *params )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+   struct gl_color_table *table = NULL;
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   switch (target) {
+      case GL_SHARED_TEXTURE_PALETTE_EXT:
+         table = &ctx->Texture.Palette;
+         break;
+      case GL_COLOR_TABLE:
+         table = &ctx->ColorTable[COLORTABLE_PRECONVOLUTION];
+         if (pname == GL_COLOR_TABLE_SCALE_SGI) {
+            GLfloat *scale = ctx->Pixel.ColorTableScale[COLORTABLE_PRECONVOLUTION];
+            params[0] = (GLint) scale[0];
+            params[1] = (GLint) scale[1];
+            params[2] = (GLint) scale[2];
+            params[3] = (GLint) scale[3];
+            return;
+         }
+         else if (pname == GL_COLOR_TABLE_BIAS_SGI) {
+            GLfloat *bias = ctx->Pixel.ColorTableBias[COLORTABLE_PRECONVOLUTION];
+            params[0] = (GLint) bias[0];
+            params[1] = (GLint) bias[1];
+            params[2] = (GLint) bias[2];
+            params[3] = (GLint) bias[3];
+            return;
+         }
+         break;
+      case GL_PROXY_COLOR_TABLE:
+         table = &ctx->ProxyColorTable[COLORTABLE_PRECONVOLUTION];
+         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;
+      case GL_POST_CONVOLUTION_COLOR_TABLE:
+         table = &ctx->ColorTable[COLORTABLE_POSTCONVOLUTION];
+         if (pname == GL_COLOR_TABLE_SCALE_SGI) {
+            GLfloat *scale = ctx->Pixel.ColorTableScale[COLORTABLE_POSTCONVOLUTION];
+            params[0] = (GLint) scale[0];
+            params[1] = (GLint) scale[1];
+            params[2] = (GLint) scale[2];
+            params[3] = (GLint) scale[3];
+            return;
+         }
+         else if (pname == GL_COLOR_TABLE_BIAS_SGI) {
+            GLfloat *bias = ctx->Pixel.ColorTableBias[COLORTABLE_POSTCONVOLUTION];
+            params[0] = (GLint) bias[0];
+            params[1] = (GLint) bias[1];
+            params[2] = (GLint) bias[2];
+            params[3] = (GLint) bias[3];
+            return;
+         }
+         break;
+      case GL_PROXY_POST_CONVOLUTION_COLOR_TABLE:
+         table = &ctx->ProxyColorTable[COLORTABLE_POSTCONVOLUTION];
+         break;
+      case GL_POST_COLOR_MATRIX_COLOR_TABLE:
+         table = &ctx->ColorTable[COLORTABLE_POSTCOLORMATRIX];
+         if (pname == GL_COLOR_TABLE_SCALE_SGI) {
+            GLfloat *scale = ctx->Pixel.ColorTableScale[COLORTABLE_POSTCOLORMATRIX];
+            params[0] = (GLint) scale[0];
+            params[0] = (GLint) scale[1];
+            params[0] = (GLint) scale[2];
+            params[0] = (GLint) scale[3];
+            return;
+         }
+         else if (pname == GL_COLOR_TABLE_BIAS_SGI) {
+            GLfloat *bias = ctx->Pixel.ColorTableScale[COLORTABLE_POSTCOLORMATRIX];
+            params[0] = (GLint) bias[0];
+            params[1] = (GLint) bias[1];
+            params[2] = (GLint) bias[2];
+            params[3] = (GLint) bias[3];
+            return;
+         }
+         break;
+      case GL_PROXY_POST_COLOR_MATRIX_COLOR_TABLE:
+         table = &ctx->ProxyColorTable[COLORTABLE_POSTCOLORMATRIX];
+         break;
+      default:
+         /* Try texture targets */
+         {
+            struct gl_texture_object *texobj
+               = _mesa_select_tex_object(ctx, texUnit, target);
+            if (texobj) {
+               table = &texobj->Palette;
+            }
+            else {
+               _mesa_error(ctx, GL_INVALID_ENUM,
+                           "glGetColorTableParameteriv(target)");
+               return;
+            }
+         }
+   }
+
+   assert(table);
+
+   switch (pname) {
+      case GL_COLOR_TABLE_FORMAT:
+         *params = table->InternalFormat;
+         break;
+      case GL_COLOR_TABLE_WIDTH:
+         *params = table->Size;
+         break;
+      case GL_COLOR_TABLE_RED_SIZE:
+         *params = table->RedSize;
+         break;
+      case GL_COLOR_TABLE_GREEN_SIZE:
+         *params = table->GreenSize;
+         break;
+      case GL_COLOR_TABLE_BLUE_SIZE:
+         *params = table->BlueSize;
+         break;
+      case GL_COLOR_TABLE_ALPHA_SIZE:
+         *params = table->AlphaSize;
+         break;
+      case GL_COLOR_TABLE_LUMINANCE_SIZE:
+         *params = table->LuminanceSize;
+         break;
+      case GL_COLOR_TABLE_INTENSITY_SIZE:
+         *params = table->IntensitySize;
+         break;
+      default:
+         _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameteriv(pname)" );
+         return;
+   }
+}
+
+/**********************************************************************/
+/*****                      Initialization                        *****/
+/**********************************************************************/
+
+
+void
+_mesa_init_colortable( struct gl_color_table *p )
+{
+   p->TableF = NULL;
+   p->TableUB = NULL;
+   p->Size = 0;
+   p->InternalFormat = GL_RGBA;
+}
+
+
+
+void
+_mesa_free_colortable_data( struct gl_color_table *p )
+{
+   if (p->TableF) {
+      _mesa_free(p->TableF);
+      p->TableF = NULL;
+   }
+   if (p->TableUB) {
+      _mesa_free(p->TableUB);
+      p->TableUB = NULL;
+   }
+}
+
+
+/*
+ * Initialize all colortables for a context.
+ */
+void
+_mesa_init_colortables( GLcontext * ctx )
+{
+   GLuint i;
+   for (i = 0; i < COLORTABLE_MAX; i++) {
+      _mesa_init_colortable(&ctx->ColorTable[i]);
+      _mesa_init_colortable(&ctx->ProxyColorTable[i]);
+   }
+}
+
+
+/*
+ * Free all colortable data for a context
+ */
+void
+_mesa_free_colortables_data( GLcontext *ctx )
+{
+   GLuint i;
+   for (i = 0; i < COLORTABLE_MAX; i++) {
+      _mesa_free_colortable_data(&ctx->ColorTable[i]);
+      _mesa_free_colortable_data(&ctx->ProxyColorTable[i]);
+   }
+}