enable.c

Mesa is an open-source implementation of the OpenGL specification - a system for rendering interacti

	 return ctx->Eval.AutoNormal;
      case GL_BLEND:
         return ctx->Color.BlendEnabled;
      case GL_CLIP_PLANE0:
      case GL_CLIP_PLANE1:
      case GL_CLIP_PLANE2:
      case GL_CLIP_PLANE3:
      case GL_CLIP_PLANE4:
      case GL_CLIP_PLANE5:
	 return (ctx->Transform.ClipPlanesEnabled >> (cap - GL_CLIP_PLANE0)) & 1;
      case GL_COLOR_MATERIAL:
	 return ctx->Light.ColorMaterialEnabled;
      case GL_CULL_FACE:
         return ctx->Polygon.CullFlag;
      case GL_DEPTH_TEST:
         return ctx->Depth.Test;
      case GL_DITHER:
	 return ctx->Color.DitherFlag;
      case GL_FOG:
	 return ctx->Fog.Enabled;
      case GL_LIGHTING:
         return ctx->Light.Enabled;
      case GL_LIGHT0:
      case GL_LIGHT1:
      case GL_LIGHT2:
      case GL_LIGHT3:
      case GL_LIGHT4:
      case GL_LIGHT5:
      case GL_LIGHT6:
      case GL_LIGHT7:
         return ctx->Light.Light[cap-GL_LIGHT0].Enabled;
      case GL_LINE_SMOOTH:
	 return ctx->Line.SmoothFlag;
      case GL_LINE_STIPPLE:
	 return ctx->Line.StippleFlag;
      case GL_INDEX_LOGIC_OP:
	 return ctx->Color.IndexLogicOpEnabled;
      case GL_COLOR_LOGIC_OP:
	 return ctx->Color.ColorLogicOpEnabled;
      case GL_MAP1_COLOR_4:
	 return ctx->Eval.Map1Color4;
      case GL_MAP1_INDEX:
	 return ctx->Eval.Map1Index;
      case GL_MAP1_NORMAL:
	 return ctx->Eval.Map1Normal;
      case GL_MAP1_TEXTURE_COORD_1:
	 return ctx->Eval.Map1TextureCoord1;
      case GL_MAP1_TEXTURE_COORD_2:
	 return ctx->Eval.Map1TextureCoord2;
      case GL_MAP1_TEXTURE_COORD_3:
	 return ctx->Eval.Map1TextureCoord3;
      case GL_MAP1_TEXTURE_COORD_4:
	 return ctx->Eval.Map1TextureCoord4;
      case GL_MAP1_VERTEX_3:
	 return ctx->Eval.Map1Vertex3;
      case GL_MAP1_VERTEX_4:
	 return ctx->Eval.Map1Vertex4;
      case GL_MAP2_COLOR_4:
	 return ctx->Eval.Map2Color4;
      case GL_MAP2_INDEX:
	 return ctx->Eval.Map2Index;
      case GL_MAP2_NORMAL:
	 return ctx->Eval.Map2Normal;
      case GL_MAP2_TEXTURE_COORD_1:
	 return ctx->Eval.Map2TextureCoord1;
      case GL_MAP2_TEXTURE_COORD_2:
	 return ctx->Eval.Map2TextureCoord2;
      case GL_MAP2_TEXTURE_COORD_3:
	 return ctx->Eval.Map2TextureCoord3;
      case GL_MAP2_TEXTURE_COORD_4:
	 return ctx->Eval.Map2TextureCoord4;
      case GL_MAP2_VERTEX_3:
	 return ctx->Eval.Map2Vertex3;
      case GL_MAP2_VERTEX_4:
	 return ctx->Eval.Map2Vertex4;
      case GL_NORMALIZE:
	 return ctx->Transform.Normalize;
      case GL_POINT_SMOOTH:
	 return ctx->Point.SmoothFlag;
      case GL_POLYGON_SMOOTH:
	 return ctx->Polygon.SmoothFlag;
      case GL_POLYGON_STIPPLE:
	 return ctx->Polygon.StippleFlag;
      case GL_POLYGON_OFFSET_POINT:
	 return ctx->Polygon.OffsetPoint;
      case GL_POLYGON_OFFSET_LINE:
	 return ctx->Polygon.OffsetLine;
      case GL_POLYGON_OFFSET_FILL:
      /*case GL_POLYGON_OFFSET_EXT:*/
	 return ctx->Polygon.OffsetFill;
      case GL_RESCALE_NORMAL_EXT:
         return ctx->Transform.RescaleNormals;
      case GL_SCISSOR_TEST:
	 return ctx->Scissor.Enabled;
      case GL_SHARED_TEXTURE_PALETTE_EXT:
         return ctx->Texture.SharedPalette;
      case GL_STENCIL_TEST:
	 return ctx->Stencil.Enabled;
      case GL_TEXTURE_1D:
         return is_texture_enabled(ctx, TEXTURE_1D_BIT);
      case GL_TEXTURE_2D:
         return is_texture_enabled(ctx, TEXTURE_2D_BIT);
      case GL_TEXTURE_3D:
         return is_texture_enabled(ctx, TEXTURE_3D_BIT);
      case GL_TEXTURE_GEN_Q:
         {
            const struct gl_texture_unit *texUnit;
            texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
            return (texUnit->TexGenEnabled & Q_BIT) ? GL_TRUE : GL_FALSE;
         }
      case GL_TEXTURE_GEN_R:
         {
            const struct gl_texture_unit *texUnit;
            texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
            return (texUnit->TexGenEnabled & R_BIT) ? GL_TRUE : GL_FALSE;
         }
      case GL_TEXTURE_GEN_S:
         {
            const struct gl_texture_unit *texUnit;
            texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
            return (texUnit->TexGenEnabled & S_BIT) ? GL_TRUE : GL_FALSE;
         }
      case GL_TEXTURE_GEN_T:
         {
            const struct gl_texture_unit *texUnit;
            texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
            return (texUnit->TexGenEnabled & T_BIT) ? GL_TRUE : GL_FALSE;
         }

      /*
       * CLIENT STATE!!!
       */
      case GL_VERTEX_ARRAY:
         return (ctx->Array.ArrayObj->Vertex.Enabled != 0);
      case GL_NORMAL_ARRAY:
         return (ctx->Array.ArrayObj->Normal.Enabled != 0);
      case GL_COLOR_ARRAY:
         return (ctx->Array.ArrayObj->Color.Enabled != 0);
      case GL_INDEX_ARRAY:
         return (ctx->Array.ArrayObj->Index.Enabled != 0);
      case GL_TEXTURE_COORD_ARRAY:
         return (ctx->Array.ArrayObj->TexCoord[ctx->Array.ActiveTexture].Enabled != 0);
      case GL_EDGE_FLAG_ARRAY:
         return (ctx->Array.ArrayObj->EdgeFlag.Enabled != 0);
      case GL_FOG_COORDINATE_ARRAY_EXT:
         CHECK_EXTENSION(EXT_fog_coord);
         return (ctx->Array.ArrayObj->FogCoord.Enabled != 0);
      case GL_SECONDARY_COLOR_ARRAY_EXT:
         CHECK_EXTENSION(EXT_secondary_color);
         return (ctx->Array.ArrayObj->SecondaryColor.Enabled != 0);

      /* GL_EXT_histogram */
      case GL_HISTOGRAM:
         CHECK_EXTENSION(EXT_histogram);
         return ctx->Pixel.HistogramEnabled;
      case GL_MINMAX:
         CHECK_EXTENSION(EXT_histogram);
         return ctx->Pixel.MinMaxEnabled;

      /* GL_SGI_color_table */
      case GL_COLOR_TABLE_SGI:
         CHECK_EXTENSION(SGI_color_table);
         return ctx->Pixel.ColorTableEnabled[COLORTABLE_PRECONVOLUTION];
      case GL_POST_CONVOLUTION_COLOR_TABLE_SGI:
         CHECK_EXTENSION(SGI_color_table);
         return ctx->Pixel.ColorTableEnabled[COLORTABLE_POSTCONVOLUTION];
      case GL_POST_COLOR_MATRIX_COLOR_TABLE_SGI:
         CHECK_EXTENSION(SGI_color_table);
         return ctx->Pixel.ColorTableEnabled[COLORTABLE_POSTCOLORMATRIX];

      /* GL_SGI_texture_color_table */
      case GL_TEXTURE_COLOR_TABLE_SGI:
         CHECK_EXTENSION(SGI_texture_color_table);
         return ctx->Texture.Unit[ctx->Texture.CurrentUnit].ColorTableEnabled;

      /* GL_EXT_convolution */
      case GL_CONVOLUTION_1D:
         CHECK_EXTENSION(EXT_convolution);
         return ctx->Pixel.Convolution1DEnabled;
      case GL_CONVOLUTION_2D:
         CHECK_EXTENSION(EXT_convolution);
         return ctx->Pixel.Convolution2DEnabled;
      case GL_SEPARABLE_2D:
         CHECK_EXTENSION(EXT_convolution);
         return ctx->Pixel.Separable2DEnabled;

      /* GL_ARB_texture_cube_map */
      case GL_TEXTURE_CUBE_MAP_ARB:
         CHECK_EXTENSION(ARB_texture_cube_map);
         return is_texture_enabled(ctx, TEXTURE_CUBE_BIT);

      /* GL_EXT_secondary_color */
      case GL_COLOR_SUM_EXT:
         CHECK_EXTENSION2(EXT_secondary_color, ARB_vertex_program);
         return ctx->Fog.ColorSumEnabled;

      /* GL_ARB_multisample */
      case GL_MULTISAMPLE_ARB:
         CHECK_EXTENSION(ARB_multisample);
         return ctx->Multisample.Enabled;
      case GL_SAMPLE_ALPHA_TO_COVERAGE_ARB:
         CHECK_EXTENSION(ARB_multisample);
         return ctx->Multisample.SampleAlphaToCoverage;
      case GL_SAMPLE_ALPHA_TO_ONE_ARB:
         CHECK_EXTENSION(ARB_multisample);
         return ctx->Multisample.SampleAlphaToOne;
      case GL_SAMPLE_COVERAGE_ARB:
         CHECK_EXTENSION(ARB_multisample);
         return ctx->Multisample.SampleCoverage;
      case GL_SAMPLE_COVERAGE_INVERT_ARB:
         CHECK_EXTENSION(ARB_multisample);
         return ctx->Multisample.SampleCoverageInvert;

      /* GL_IBM_rasterpos_clip */
      case GL_RASTER_POSITION_UNCLIPPED_IBM:
         CHECK_EXTENSION(IBM_rasterpos_clip);
         return ctx->Transform.RasterPositionUnclipped;

      /* GL_NV_point_sprite */
      case GL_POINT_SPRITE_NV:
         CHECK_EXTENSION2(NV_point_sprite, ARB_point_sprite)
         return ctx->Point.PointSprite;

#if FEATURE_NV_vertex_program || FEATURE_ARB_vertex_program
      case GL_VERTEX_PROGRAM_ARB:
         CHECK_EXTENSION2(ARB_vertex_program, NV_vertex_program);
         return ctx->VertexProgram.Enabled;
      case GL_VERTEX_PROGRAM_POINT_SIZE_ARB:
         CHECK_EXTENSION2(ARB_vertex_program, NV_vertex_program);
         return ctx->VertexProgram.PointSizeEnabled;
      case GL_VERTEX_PROGRAM_TWO_SIDE_ARB:
         CHECK_EXTENSION2(ARB_vertex_program, NV_vertex_program);
         return ctx->VertexProgram.TwoSideEnabled;
#endif
#if FEATURE_NV_vertex_program
      case GL_VERTEX_ATTRIB_ARRAY0_NV:
      case GL_VERTEX_ATTRIB_ARRAY1_NV:
      case GL_VERTEX_ATTRIB_ARRAY2_NV:
      case GL_VERTEX_ATTRIB_ARRAY3_NV:
      case GL_VERTEX_ATTRIB_ARRAY4_NV:
      case GL_VERTEX_ATTRIB_ARRAY5_NV:
      case GL_VERTEX_ATTRIB_ARRAY6_NV:
      case GL_VERTEX_ATTRIB_ARRAY7_NV:
      case GL_VERTEX_ATTRIB_ARRAY8_NV:
      case GL_VERTEX_ATTRIB_ARRAY9_NV:
      case GL_VERTEX_ATTRIB_ARRAY10_NV:
      case GL_VERTEX_ATTRIB_ARRAY11_NV:
      case GL_VERTEX_ATTRIB_ARRAY12_NV:
      case GL_VERTEX_ATTRIB_ARRAY13_NV:
      case GL_VERTEX_ATTRIB_ARRAY14_NV:
      case GL_VERTEX_ATTRIB_ARRAY15_NV:
         CHECK_EXTENSION(NV_vertex_program);
         {
            GLint n = (GLint) cap - GL_VERTEX_ATTRIB_ARRAY0_NV;
            return (ctx->Array.ArrayObj->VertexAttrib[n].Enabled != 0);
         }
      case GL_MAP1_VERTEX_ATTRIB0_4_NV:
      case GL_MAP1_VERTEX_ATTRIB1_4_NV:
      case GL_MAP1_VERTEX_ATTRIB2_4_NV:
      case GL_MAP1_VERTEX_ATTRIB3_4_NV:
      case GL_MAP1_VERTEX_ATTRIB4_4_NV:
      case GL_MAP1_VERTEX_ATTRIB5_4_NV:
      case GL_MAP1_VERTEX_ATTRIB6_4_NV:
      case GL_MAP1_VERTEX_ATTRIB7_4_NV:
      case GL_MAP1_VERTEX_ATTRIB8_4_NV:
      case GL_MAP1_VERTEX_ATTRIB9_4_NV:
      case GL_MAP1_VERTEX_ATTRIB10_4_NV:
      case GL_MAP1_VERTEX_ATTRIB11_4_NV:
      case GL_MAP1_VERTEX_ATTRIB12_4_NV:
      case GL_MAP1_VERTEX_ATTRIB13_4_NV:
      case GL_MAP1_VERTEX_ATTRIB14_4_NV:
      case GL_MAP1_VERTEX_ATTRIB15_4_NV:
         CHECK_EXTENSION(NV_vertex_program);
         {
            const GLuint map = (GLuint) (cap - GL_MAP1_VERTEX_ATTRIB0_4_NV);
            return ctx->Eval.Map1Attrib[map];
         }
      case GL_MAP2_VERTEX_ATTRIB0_4_NV:
      case GL_MAP2_VERTEX_ATTRIB1_4_NV:
      case GL_MAP2_VERTEX_ATTRIB2_4_NV:
      case GL_MAP2_VERTEX_ATTRIB3_4_NV:
      case GL_MAP2_VERTEX_ATTRIB4_4_NV:
      case GL_MAP2_VERTEX_ATTRIB5_4_NV:
      case GL_MAP2_VERTEX_ATTRIB6_4_NV:
      case GL_MAP2_VERTEX_ATTRIB7_4_NV:
      case GL_MAP2_VERTEX_ATTRIB8_4_NV:
      case GL_MAP2_VERTEX_ATTRIB9_4_NV:
      case GL_MAP2_VERTEX_ATTRIB10_4_NV:
      case GL_MAP2_VERTEX_ATTRIB11_4_NV:
      case GL_MAP2_VERTEX_ATTRIB12_4_NV:
      case GL_MAP2_VERTEX_ATTRIB13_4_NV:
      case GL_MAP2_VERTEX_ATTRIB14_4_NV:
      case GL_MAP2_VERTEX_ATTRIB15_4_NV:
         CHECK_EXTENSION(NV_vertex_program);
         {
            const GLuint map = (GLuint) (cap - GL_MAP2_VERTEX_ATTRIB0_4_NV);
            return ctx->Eval.Map2Attrib[map];
         }
#endif /* FEATURE_NV_vertex_program */

#if FEATURE_NV_fragment_program
      case GL_FRAGMENT_PROGRAM_NV:
         CHECK_EXTENSION(NV_fragment_program);
         return ctx->FragmentProgram.Enabled;
#endif /* FEATURE_NV_fragment_program */

      /* GL_NV_texture_rectangle */
      case GL_TEXTURE_RECTANGLE_NV:
         CHECK_EXTENSION(NV_texture_rectangle);
         return is_texture_enabled(ctx, TEXTURE_RECT_BIT);

      /* GL_EXT_stencil_two_side */
      case GL_STENCIL_TEST_TWO_SIDE_EXT:
         CHECK_EXTENSION(EXT_stencil_two_side);
         return ctx->Stencil.TestTwoSide;

#if FEATURE_ARB_fragment_program
      case GL_FRAGMENT_PROGRAM_ARB:
         return ctx->FragmentProgram.Enabled;
#endif /* FEATURE_ARB_fragment_program */

      /* GL_EXT_depth_bounds_test */
      case GL_DEPTH_BOUNDS_TEST_EXT:
         CHECK_EXTENSION(EXT_depth_bounds_test);
         return ctx->Depth.BoundsTest;

      /* GL_MESA_program_debug */
      case GL_FRAGMENT_PROGRAM_CALLBACK_MESA:
         CHECK_EXTENSION(MESA_program_debug);
         return ctx->FragmentProgram.CallbackEnabled;
      case GL_VERTEX_PROGRAM_CALLBACK_MESA:
         CHECK_EXTENSION(MESA_program_debug);
         return ctx->VertexProgram.CallbackEnabled;
#if FEATURE_ATI_fragment_shader
      case GL_FRAGMENT_SHADER_ATI:
	 CHECK_EXTENSION(ATI_fragment_shader);
	 return ctx->ATIFragmentShader.Enabled;
#endif /* FEATURE_ATI_fragment_shader */
      default:
         _mesa_error(ctx, GL_INVALID_ENUM, "glIsEnabled(0x%x)", (int) cap);
	 return GL_FALSE;
   }
}