colortab.c

来自「mesa-6.5-minigui源码」· C语言 代码 · 共 1,446 行 · 第 1/4 页

         }
         table = &ctx->Texture.ProxyCubeMap->Palette;
         break;
      case GL_SHARED_TEXTURE_PALETTE_EXT:
         table = &ctx->Texture.Palette;
         break;
      case GL_COLOR_TABLE:
         table = &ctx->ColorTable;
         if (pname == GL_COLOR_TABLE_SCALE_SGI) {
            params[0] = ctx->Pixel.ColorTableScale[0];
            params[1] = ctx->Pixel.ColorTableScale[1];
            params[2] = ctx->Pixel.ColorTableScale[2];
            params[3] = ctx->Pixel.ColorTableScale[3];
            return;
         }
         else if (pname == GL_COLOR_TABLE_BIAS_SGI) {
            params[0] = ctx->Pixel.ColorTableBias[0];
            params[1] = ctx->Pixel.ColorTableBias[1];
            params[2] = ctx->Pixel.ColorTableBias[2];
            params[3] = ctx->Pixel.ColorTableBias[3];
            return;
         }
         break;
      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 = &(texUnit->ColorTable);
         if (pname == GL_COLOR_TABLE_SCALE_SGI) {
            params[0] = ctx->Pixel.TextureColorTableScale[0];
            params[1] = ctx->Pixel.TextureColorTableScale[1];
            params[2] = ctx->Pixel.TextureColorTableScale[2];
            params[3] = ctx->Pixel.TextureColorTableScale[3];
            return;
         }
         else if (pname == GL_COLOR_TABLE_BIAS_SGI) {
            params[0] = ctx->Pixel.TextureColorTableBias[0];
            params[1] = ctx->Pixel.TextureColorTableBias[1];
            params[2] = ctx->Pixel.TextureColorTableBias[2];
            params[3] = 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->PostConvolutionColorTable;
         if (pname == GL_COLOR_TABLE_SCALE_SGI) {
            params[0] = ctx->Pixel.PCCTscale[0];
            params[1] = ctx->Pixel.PCCTscale[1];
            params[2] = ctx->Pixel.PCCTscale[2];
            params[3] = ctx->Pixel.PCCTscale[3];
            return;
         }
         else if (pname == GL_COLOR_TABLE_BIAS_SGI) {
            params[0] = ctx->Pixel.PCCTbias[0];
            params[1] = ctx->Pixel.PCCTbias[1];
            params[2] = ctx->Pixel.PCCTbias[2];
            params[3] = ctx->Pixel.PCCTbias[3];
            return;
         }
         break;
      case GL_PROXY_POST_CONVOLUTION_COLOR_TABLE:
         table = &ctx->ProxyPostConvolutionColorTable;
         break;
      case GL_POST_COLOR_MATRIX_COLOR_TABLE:
         table = &ctx->PostColorMatrixColorTable;
         if (pname == GL_COLOR_TABLE_SCALE_SGI) {
            params[0] = ctx->Pixel.PCMCTscale[0];
            params[1] = ctx->Pixel.PCMCTscale[1];
            params[2] = ctx->Pixel.PCMCTscale[2];
            params[3] = ctx->Pixel.PCMCTscale[3];
            return;
         }
         else if (pname == GL_COLOR_TABLE_BIAS_SGI) {
            params[0] = ctx->Pixel.PCMCTbias[0];
            params[1] = ctx->Pixel.PCMCTbias[1];
            params[2] = ctx->Pixel.PCMCTbias[2];
            params[3] = ctx->Pixel.PCMCTbias[3];
            return;
         }
         break;
      case GL_PROXY_POST_COLOR_MATRIX_COLOR_TABLE:
         table = &ctx->ProxyPostColorMatrixColorTable;
         break;
      default:
         _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_TEXTURE_1D:
         table = &texUnit->Current1D->Palette;
         break;
      case GL_TEXTURE_2D:
         table = &texUnit->Current2D->Palette;
         break;
      case GL_TEXTURE_3D:
         table = &texUnit->Current3D->Palette;
         break;
      case GL_TEXTURE_CUBE_MAP_ARB:
         if (!ctx->Extensions.ARB_texture_cube_map) {
            _mesa_error(ctx, GL_INVALID_ENUM,
                        "glGetColorTableParameteriv(target)");
            return;
         }
         table = &texUnit->CurrentCubeMap->Palette;
         break;
      case GL_PROXY_TEXTURE_1D:
         table = &ctx->Texture.Proxy1D->Palette;
         break;
      case GL_PROXY_TEXTURE_2D:
         table = &ctx->Texture.Proxy2D->Palette;
         break;
      case GL_PROXY_TEXTURE_3D:
         table = &ctx->Texture.Proxy3D->Palette;
         break;
      case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
         if (!ctx->Extensions.ARB_texture_cube_map) {
            _mesa_error(ctx, GL_INVALID_ENUM,
                        "glGetColorTableParameteriv(target)");
            return;
         }
         table = &ctx->Texture.ProxyCubeMap->Palette;
         break;
      case GL_SHARED_TEXTURE_PALETTE_EXT:
         table = &ctx->Texture.Palette;
         break;
      case GL_COLOR_TABLE:
         table = &ctx->ColorTable;
         if (pname == GL_COLOR_TABLE_SCALE_SGI) {
            params[0] = (GLint) ctx->Pixel.ColorTableScale[0];
            params[1] = (GLint) ctx->Pixel.ColorTableScale[1];
            params[2] = (GLint) ctx->Pixel.ColorTableScale[2];
            params[3] = (GLint) ctx->Pixel.ColorTableScale[3];
            return;
         }
         else if (pname == GL_COLOR_TABLE_BIAS_SGI) {
            params[0] = (GLint) ctx->Pixel.ColorTableBias[0];
            params[1] = (GLint) ctx->Pixel.ColorTableBias[1];
            params[2] = (GLint) ctx->Pixel.ColorTableBias[2];
            params[3] = (GLint) ctx->Pixel.ColorTableBias[3];
            return;
         }
         break;
      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 = &(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->PostConvolutionColorTable;
         if (pname == GL_COLOR_TABLE_SCALE_SGI) {
            params[0] = (GLint) ctx->Pixel.PCCTscale[0];
            params[1] = (GLint) ctx->Pixel.PCCTscale[1];
            params[2] = (GLint) ctx->Pixel.PCCTscale[2];
            params[3] = (GLint) ctx->Pixel.PCCTscale[3];
            return;
         }
         else if (pname == GL_COLOR_TABLE_BIAS_SGI) {
            params[0] = (GLint) ctx->Pixel.PCCTbias[0];
            params[1] = (GLint) ctx->Pixel.PCCTbias[1];
            params[2] = (GLint) ctx->Pixel.PCCTbias[2];
            params[3] = (GLint) ctx->Pixel.PCCTbias[3];
            return;
         }
         break;
      case GL_PROXY_POST_CONVOLUTION_COLOR_TABLE:
         table = &ctx->ProxyPostConvolutionColorTable;
         break;
      case GL_POST_COLOR_MATRIX_COLOR_TABLE:
         table = &ctx->PostColorMatrixColorTable;
         if (pname == GL_COLOR_TABLE_SCALE_SGI) {
            params[0] = (GLint) ctx->Pixel.PCMCTscale[0];
            params[1] = (GLint) ctx->Pixel.PCMCTscale[1];
            params[2] = (GLint) ctx->Pixel.PCMCTscale[2];
            params[3] = (GLint) ctx->Pixel.PCMCTscale[3];
            return;
         }
         else if (pname == GL_COLOR_TABLE_BIAS_SGI) {
            params[0] = (GLint) ctx->Pixel.PCMCTbias[0];
            params[1] = (GLint) ctx->Pixel.PCMCTbias[1];
            params[2] = (GLint) ctx->Pixel.PCMCTbias[2];
            params[3] = (GLint) ctx->Pixel.PCMCTbias[3];
            return;
         }
         break;
      case GL_PROXY_POST_COLOR_MATRIX_COLOR_TABLE:
         table = &ctx->ProxyPostColorMatrixColorTable;
         break;
      default:
         _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->Type = CHAN_TYPE;
   p->Table = NULL;
   p->Size = 0;
   p->InternalFormat = GL_RGBA;
}



void
_mesa_free_colortable_data( struct gl_color_table *p )
{
   if (p->Table) {
      FREE(p->Table);
      p->Table = NULL;
   }
}


/*
 * Initialize all colortables for a context.
 */
void _mesa_init_colortables( GLcontext * ctx )
{
   /* Color tables */
   _mesa_init_colortable(&ctx->ColorTable);
   _mesa_init_colortable(&ctx->ProxyColorTable);
   _mesa_init_colortable(&ctx->PostConvolutionColorTable);
   _mesa_init_colortable(&ctx->ProxyPostConvolutionColorTable);
   _mesa_init_colortable(&ctx->PostColorMatrixColorTable);
   _mesa_init_colortable(&ctx->ProxyPostColorMatrixColorTable);
}


/*
 * Free all colortable data for a context
 */
void _mesa_free_colortables_data( GLcontext *ctx )
{
   _mesa_free_colortable_data(&ctx->ColorTable);
   _mesa_free_colortable_data(&ctx->ProxyColorTable);
   _mesa_free_colortable_data(&ctx->PostConvolutionColorTable);
   _mesa_free_colortable_data(&ctx->ProxyPostConvolutionColorTable);
   _mesa_free_colortable_data(&ctx->PostColorMatrixColorTable);
   _mesa_free_colortable_data(&ctx->ProxyPostColorMatrixColorTable);
}