示例#1
0
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 = _mesa_get_current_tex_unit(ctx);
   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;
}
示例#2
0
void GLAPIENTRY
_mesa_ColorTable( GLenum target, GLenum internalFormat,
                  GLsizei width, GLenum format, GLenum type,
                  const GLvoid *data )
{
    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;
    GLfloat rScale = 1.0, gScale = 1.0, bScale = 1.0, aScale = 1.0;
    GLfloat rBias  = 0.0, gBias  = 0.0, bBias  = 0.0, aBias  = 0.0;
    GLenum tableType = CHAN_TYPE;
    GLint comps;
    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); /* too complex */

    switch (target) {
    case GL_TEXTURE_1D:
        texObj = texUnit->Current1D;
        table = &texObj->Palette;
        break;
    case GL_TEXTURE_2D:
        texObj = texUnit->Current2D;
        table = &texObj->Palette;
        break;
    case GL_TEXTURE_3D:
        texObj = texUnit->Current3D;
        table = &texObj->Palette;
        break;
    case GL_TEXTURE_CUBE_MAP_ARB:
        if (!ctx->Extensions.ARB_texture_cube_map) {
            _mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(target)");
            return;
        }
        texObj = texUnit->CurrentCubeMap;
        table = &texObj->Palette;
        break;
    case GL_PROXY_TEXTURE_1D:
        texObj = ctx->Texture.Proxy1D;
        table = &texObj->Palette;
        proxy = GL_TRUE;
        break;
    case GL_PROXY_TEXTURE_2D:
        texObj = ctx->Texture.Proxy2D;
        table = &texObj->Palette;
        proxy = GL_TRUE;
        break;
    case GL_PROXY_TEXTURE_3D:
        texObj = ctx->Texture.Proxy3D;
        table = &texObj->Palette;
        proxy = GL_TRUE;
        break;
    case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
        if (!ctx->Extensions.ARB_texture_cube_map) {
            _mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(target)");
            return;
        }
        texObj = ctx->Texture.ProxyCubeMap;
        table = &texObj->Palette;
        break;
    case GL_SHARED_TEXTURE_PALETTE_EXT:
        table = &ctx->Texture.Palette;
        break;
    case GL_COLOR_TABLE:
        table = &ctx->ColorTable;
        tableType = GL_FLOAT;
        rScale = ctx->Pixel.ColorTableScale[0];
        gScale = ctx->Pixel.ColorTableScale[1];
        bScale = ctx->Pixel.ColorTableScale[2];
        aScale = ctx->Pixel.ColorTableScale[3];
        rBias = ctx->Pixel.ColorTableBias[0];
        gBias = ctx->Pixel.ColorTableBias[1];
        bBias = ctx->Pixel.ColorTableBias[2];
        aBias = ctx->Pixel.ColorTableBias[3];
        break;
    case GL_PROXY_COLOR_TABLE:
        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 = &(texUnit->ColorTable);
        tableType = GL_FLOAT;
        rScale = ctx->Pixel.TextureColorTableScale[0];
        gScale = ctx->Pixel.TextureColorTableScale[1];
        bScale = ctx->Pixel.TextureColorTableScale[2];
        aScale = ctx->Pixel.TextureColorTableScale[3];
        rBias = ctx->Pixel.TextureColorTableBias[0];
        gBias = ctx->Pixel.TextureColorTableBias[1];
        bBias = ctx->Pixel.TextureColorTableBias[2];
        aBias = ctx->Pixel.TextureColorTableBias[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 = &(texUnit->ProxyColorTable);
        proxy = GL_TRUE;
        break;
    case GL_POST_CONVOLUTION_COLOR_TABLE:
        table = &ctx->PostConvolutionColorTable;
        tableType = GL_FLOAT;
        rScale = ctx->Pixel.PCCTscale[0];
        gScale = ctx->Pixel.PCCTscale[1];
        bScale = ctx->Pixel.PCCTscale[2];
        aScale = ctx->Pixel.PCCTscale[3];
        rBias = ctx->Pixel.PCCTbias[0];
        gBias = ctx->Pixel.PCCTbias[1];
        bBias = ctx->Pixel.PCCTbias[2];
        aBias = ctx->Pixel.PCCTbias[3];
        break;
    case GL_PROXY_POST_CONVOLUTION_COLOR_TABLE:
        table = &ctx->ProxyPostConvolutionColorTable;
        proxy = GL_TRUE;
        break;
    case GL_POST_COLOR_MATRIX_COLOR_TABLE:
        table = &ctx->PostColorMatrixColorTable;
        tableType = GL_FLOAT;
        rScale = ctx->Pixel.PCMCTscale[0];
        gScale = ctx->Pixel.PCMCTscale[1];
        bScale = ctx->Pixel.PCMCTscale[2];
        aScale = ctx->Pixel.PCMCTscale[3];
        rBias = ctx->Pixel.PCMCTbias[0];
        gBias = ctx->Pixel.PCMCTbias[1];
        bBias = ctx->Pixel.PCMCTbias[2];
        aBias = ctx->Pixel.PCMCTbias[3];
        break;
    case GL_PROXY_POST_COLOR_MATRIX_COLOR_TABLE:
        table = &ctx->ProxyPostColorMatrixColorTable;
        proxy = GL_TRUE;
        break;
    default:
        _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 || baseFormat == GL_COLOR_INDEX) {
        _mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(internalFormat)");
        return;
    }

    if (width < 0 || (width != 0 && _mesa_bitcount(width) != 1)) {
        /* error */
        if (proxy) {
            table->Size = 0;
            table->IntFormat = (GLenum) 0;
            table->Format = (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->IntFormat = (GLenum) 0;
            table->Format = (GLenum) 0;
        }
        else {
            _mesa_error(ctx, GL_TABLE_TOO_LARGE, "glColorTable(width)");
        }
        return;
    }

    table->Size = width;
    table->IntFormat = internalFormat;
    table->Format = (GLenum) baseFormat;
    set_component_sizes(table);

    comps = _mesa_components_in_format(table->Format);
    assert(comps > 0);  /* error should have been caught sooner */

    if (!proxy) {
        /* free old table, if any */
        if (table->Table) {
            FREE(table->Table);
            table->Table = NULL;
        }

        if (width > 0) {
            if (tableType == GL_FLOAT) {
                table->Type = GL_FLOAT;
                table->Table = MALLOC(comps * width * sizeof(GLfloat));
            }
            else {
                table->Type = CHAN_TYPE;
                table->Table = MALLOC(comps * width * sizeof(GLchan));
            }

            if (!table->Table) {
                _mesa_error(ctx, GL_OUT_OF_MEMORY, "glColorTable");
                return;
            }

            store_colortable_entries(ctx, table,
                                     0, width,  /* start, count */
                                     format, type, data,
                                     rScale, rBias,
                                     gScale, gBias,
                                     bScale, bBias,
                                     aScale, aBias);
        }
    } /* proxy */

    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;
}