enable.c

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         break;
      case GL_LINE_SMOOTH:
         if (ctx->Line.SmoothFlag == state)
            return;
         FLUSH_VERTICES(ctx, _NEW_LINE);
         ctx->Line.SmoothFlag = state;
         ctx->_TriangleCaps ^= DD_LINE_SMOOTH;
         break;
      case GL_LINE_STIPPLE:
         if (ctx->Line.StippleFlag == state)
            return;
         FLUSH_VERTICES(ctx, _NEW_LINE);
         ctx->Line.StippleFlag = state;
         ctx->_TriangleCaps ^= DD_LINE_STIPPLE;
         break;
      case GL_INDEX_LOGIC_OP:
         if (ctx->Color.IndexLogicOpEnabled == state)
            return;
         FLUSH_VERTICES(ctx, _NEW_COLOR);
         ctx->Color.IndexLogicOpEnabled = state;
         break;
      case GL_COLOR_LOGIC_OP:
         if (ctx->Color.ColorLogicOpEnabled == state)
            return;
         FLUSH_VERTICES(ctx, _NEW_COLOR);
         ctx->Color.ColorLogicOpEnabled = state;
         /* This is needed to support 1.1's RGB logic ops AND
          * 1.0's blending logicops.
          */
         ctx->Color._LogicOpEnabled =
            (state || (ctx->Color.BlendEnabled &&
                       ctx->Color.BlendEquationRGB == GL_LOGIC_OP));
         break;
      case GL_MAP1_COLOR_4:
         if (ctx->Eval.Map1Color4 == state)
            return;
         FLUSH_VERTICES(ctx, _NEW_EVAL);
         ctx->Eval.Map1Color4 = state;
         break;
      case GL_MAP1_INDEX:
         if (ctx->Eval.Map1Index == state)
            return;
         FLUSH_VERTICES(ctx, _NEW_EVAL);
         ctx->Eval.Map1Index = state;
         break;
      case GL_MAP1_NORMAL:
         if (ctx->Eval.Map1Normal == state)
            return;
         FLUSH_VERTICES(ctx, _NEW_EVAL);
         ctx->Eval.Map1Normal = state;
         break;
      case GL_MAP1_TEXTURE_COORD_1:
         if (ctx->Eval.Map1TextureCoord1 == state)
            return;
         FLUSH_VERTICES(ctx, _NEW_EVAL);
         ctx->Eval.Map1TextureCoord1 = state;
         break;
      case GL_MAP1_TEXTURE_COORD_2:
         if (ctx->Eval.Map1TextureCoord2 == state)
            return;
         FLUSH_VERTICES(ctx, _NEW_EVAL);
         ctx->Eval.Map1TextureCoord2 = state;
         break;
      case GL_MAP1_TEXTURE_COORD_3:
         if (ctx->Eval.Map1TextureCoord3 == state)
            return;
         FLUSH_VERTICES(ctx, _NEW_EVAL);
         ctx->Eval.Map1TextureCoord3 = state;
         break;
      case GL_MAP1_TEXTURE_COORD_4:
         if (ctx->Eval.Map1TextureCoord4 == state)
            return;
         FLUSH_VERTICES(ctx, _NEW_EVAL);
         ctx->Eval.Map1TextureCoord4 = state;
         break;
      case GL_MAP1_VERTEX_3:
         if (ctx->Eval.Map1Vertex3 == state)
            return;
         FLUSH_VERTICES(ctx, _NEW_EVAL);
         ctx->Eval.Map1Vertex3 = state;
         break;
      case GL_MAP1_VERTEX_4:
         if (ctx->Eval.Map1Vertex4 == state)
            return;
         FLUSH_VERTICES(ctx, _NEW_EVAL);
         ctx->Eval.Map1Vertex4 = state;
         break;
      case GL_MAP2_COLOR_4:
         if (ctx->Eval.Map2Color4 == state)
            return;
         FLUSH_VERTICES(ctx, _NEW_EVAL);
         ctx->Eval.Map2Color4 = state;
         break;
      case GL_MAP2_INDEX:
         if (ctx->Eval.Map2Index == state)
            return;
         FLUSH_VERTICES(ctx, _NEW_EVAL);
         ctx->Eval.Map2Index = state;
         break;
      case GL_MAP2_NORMAL:
         if (ctx->Eval.Map2Normal == state)
            return;
         FLUSH_VERTICES(ctx, _NEW_EVAL);
         ctx->Eval.Map2Normal = state;
         break;
      case GL_MAP2_TEXTURE_COORD_1:
         if (ctx->Eval.Map2TextureCoord1 == state)
            return;
         FLUSH_VERTICES(ctx, _NEW_EVAL);
         ctx->Eval.Map2TextureCoord1 = state;
         break;
      case GL_MAP2_TEXTURE_COORD_2:
         if (ctx->Eval.Map2TextureCoord2 == state)
            return;
         FLUSH_VERTICES(ctx, _NEW_EVAL);
         ctx->Eval.Map2TextureCoord2 = state;
         break;
      case GL_MAP2_TEXTURE_COORD_3:
         if (ctx->Eval.Map2TextureCoord3 == state)
            return;
         FLUSH_VERTICES(ctx, _NEW_EVAL);
         ctx->Eval.Map2TextureCoord3 = state;
         break;
      case GL_MAP2_TEXTURE_COORD_4:
         if (ctx->Eval.Map2TextureCoord4 == state)
            return;
         FLUSH_VERTICES(ctx, _NEW_EVAL);
         ctx->Eval.Map2TextureCoord4 = state;
         break;
      case GL_MAP2_VERTEX_3:
         if (ctx->Eval.Map2Vertex3 == state)
            return;
         FLUSH_VERTICES(ctx, _NEW_EVAL);
         ctx->Eval.Map2Vertex3 = state;
         break;
      case GL_MAP2_VERTEX_4:
         if (ctx->Eval.Map2Vertex4 == state)
            return;
         FLUSH_VERTICES(ctx, _NEW_EVAL);
         ctx->Eval.Map2Vertex4 = state;
         break;
      case GL_MINMAX:
         if (ctx->Pixel.MinMaxEnabled == state)
            return;
         FLUSH_VERTICES(ctx, _NEW_PIXEL);
         ctx->Pixel.MinMaxEnabled = state;
         break;
      case GL_NORMALIZE:
         if (ctx->Transform.Normalize == state)
            return;
         FLUSH_VERTICES(ctx, _NEW_TRANSFORM);
         ctx->Transform.Normalize = state;
         break;
      case GL_POINT_SMOOTH:
         if (ctx->Point.SmoothFlag==state)
            return;
         FLUSH_VERTICES(ctx, _NEW_POINT);
         ctx->Point.SmoothFlag = state;
         ctx->_TriangleCaps ^= DD_POINT_SMOOTH;
         break;
      case GL_POLYGON_SMOOTH:
         if (ctx->Polygon.SmoothFlag==state)
            return;
         FLUSH_VERTICES(ctx, _NEW_POLYGON);
         ctx->Polygon.SmoothFlag = state;
         ctx->_TriangleCaps ^= DD_TRI_SMOOTH;
         break;
      case GL_POLYGON_STIPPLE:
         if (ctx->Polygon.StippleFlag==state)
            return;
         FLUSH_VERTICES(ctx, _NEW_POLYGON);
         ctx->Polygon.StippleFlag = state;
         ctx->_TriangleCaps ^= DD_TRI_STIPPLE;
         break;
      case GL_POLYGON_OFFSET_POINT:
         if (ctx->Polygon.OffsetPoint==state)
            return;
         FLUSH_VERTICES(ctx, _NEW_POLYGON);
         ctx->Polygon.OffsetPoint = state;
         break;
      case GL_POLYGON_OFFSET_LINE:
         if (ctx->Polygon.OffsetLine==state)
            return;
         FLUSH_VERTICES(ctx, _NEW_POLYGON);
         ctx->Polygon.OffsetLine = state;
         break;
      case GL_POLYGON_OFFSET_FILL:
         /*case GL_POLYGON_OFFSET_EXT:*/
         if (ctx->Polygon.OffsetFill==state)
            return;
         FLUSH_VERTICES(ctx, _NEW_POLYGON);
         ctx->Polygon.OffsetFill = state;
         break;
      case GL_RESCALE_NORMAL_EXT:
         if (ctx->Transform.RescaleNormals == state)
            return;
         FLUSH_VERTICES(ctx, _NEW_TRANSFORM);
         ctx->Transform.RescaleNormals = state;
         break;
      case GL_SCISSOR_TEST:
         if (ctx->Scissor.Enabled==state)
            return;
         FLUSH_VERTICES(ctx, _NEW_SCISSOR);
         ctx->Scissor.Enabled = state;
         break;
      case GL_SHARED_TEXTURE_PALETTE_EXT:
         if (ctx->Texture.SharedPalette == state)
            return;
         FLUSH_VERTICES(ctx, _NEW_TEXTURE);
         ctx->Texture.SharedPalette = state;
         break;
      case GL_STENCIL_TEST:
         if (state && ctx->DrawBuffer->Visual.stencilBits == 0) {
            _mesa_warning(ctx,
                          "glEnable(GL_STENCIL_TEST) but no stencil buffer");
            return;
         }
         if (ctx->Stencil.Enabled==state)
            return;
         FLUSH_VERTICES(ctx, _NEW_STENCIL);
         ctx->Stencil.Enabled = state;
         break;
      case GL_TEXTURE_1D: {
         const GLuint curr = ctx->Texture.CurrentUnit;
         struct gl_texture_unit *texUnit = &ctx->Texture.Unit[curr];
         GLuint newenabled = texUnit->Enabled & ~TEXTURE_1D_BIT;
         if (state)
            newenabled |= TEXTURE_1D_BIT;
         if (!ctx->DrawBuffer->Visual.rgbMode
             || texUnit->Enabled == newenabled)
            return;
         FLUSH_VERTICES(ctx, _NEW_TEXTURE);
         texUnit->Enabled = newenabled;
         break;
      }
      case GL_TEXTURE_2D: {
         const GLuint curr = ctx->Texture.CurrentUnit;
         struct gl_texture_unit *texUnit = &ctx->Texture.Unit[curr];
         GLuint newenabled = texUnit->Enabled & ~TEXTURE_2D_BIT;
         if (state)
            newenabled |= TEXTURE_2D_BIT;
         if (!ctx->DrawBuffer->Visual.rgbMode
             || texUnit->Enabled == newenabled)
            return;
         FLUSH_VERTICES(ctx, _NEW_TEXTURE);
         texUnit->Enabled = newenabled;
         break;
      }
      case GL_TEXTURE_3D: {
         const GLuint curr = ctx->Texture.CurrentUnit;
         struct gl_texture_unit *texUnit = &ctx->Texture.Unit[curr];
         GLuint newenabled = texUnit->Enabled & ~TEXTURE_3D_BIT;
         if (state)
            newenabled |= TEXTURE_3D_BIT;
         if (!ctx->DrawBuffer->Visual.rgbMode
             || texUnit->Enabled == newenabled)
            return;
         FLUSH_VERTICES(ctx, _NEW_TEXTURE);
         texUnit->Enabled = newenabled;
         break;
      }
      case GL_TEXTURE_GEN_Q: {
         GLuint unit = ctx->Texture.CurrentUnit;
         struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
         GLuint newenabled = texUnit->TexGenEnabled & ~Q_BIT;
         if (state)
            newenabled |= Q_BIT;
         if (texUnit->TexGenEnabled == newenabled)
            return;
         FLUSH_VERTICES(ctx, _NEW_TEXTURE);
         texUnit->TexGenEnabled = newenabled;
         break;
      }
      case GL_TEXTURE_GEN_R: {
         GLuint unit = ctx->Texture.CurrentUnit;
         struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
         GLuint newenabled = texUnit->TexGenEnabled & ~R_BIT;
         if (state)
            newenabled |= R_BIT;
         if (texUnit->TexGenEnabled == newenabled)
            return;
         FLUSH_VERTICES(ctx, _NEW_TEXTURE);
         texUnit->TexGenEnabled = newenabled;
         break;
      }
      case GL_TEXTURE_GEN_S: {
         GLuint unit = ctx->Texture.CurrentUnit;
         struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
         GLuint newenabled = texUnit->TexGenEnabled & ~S_BIT;
         if (state)
            newenabled |= S_BIT;
         if (texUnit->TexGenEnabled == newenabled)
            return;
         FLUSH_VERTICES(ctx, _NEW_TEXTURE);
         texUnit->TexGenEnabled = newenabled;
         break;
      }
      case GL_TEXTURE_GEN_T: {
         GLuint unit = ctx->Texture.CurrentUnit;
         struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
         GLuint newenabled = texUnit->TexGenEnabled & ~T_BIT;
         if (state)
            newenabled |= T_BIT;
         if (texUnit->TexGenEnabled == newenabled)
            return;
         FLUSH_VERTICES(ctx, _NEW_TEXTURE);
         texUnit->TexGenEnabled = newenabled;
         break;
      }

      /*
       * CLIENT STATE!!!
       */
      case GL_VERTEX_ARRAY:
      case GL_NORMAL_ARRAY:
      case GL_COLOR_ARRAY:
      case GL_INDEX_ARRAY:
      case GL_TEXTURE_COORD_ARRAY:
      case GL_EDGE_FLAG_ARRAY:
      case GL_FOG_COORDINATE_ARRAY_EXT:
      case GL_SECONDARY_COLOR_ARRAY_EXT:
         client_state( ctx, cap, state );
         return;

      /* GL_HP_occlusion_test */
      case GL_OCCLUSION_TEST_HP:
         CHECK_EXTENSION(HP_occlusion_test, cap);
         if (ctx->Depth.OcclusionTest == state)
            return;
         FLUSH_VERTICES(ctx, _NEW_DEPTH);
         ctx->Depth.OcclusionTest = state;
         if (state)
            ctx->OcclusionResult = ctx->OcclusionResultSaved;
         else
            ctx->OcclusionResultSaved = ctx->OcclusionResult;
         break;

      /* GL_SGIS_pixel_texture */
      case GL_PIXEL_TEXTURE_SGIS:
         CHECK_EXTENSION(SGIS_pixel_texture, cap);
         if (ctx->Pixel.PixelTextureEnabled == state)
            return;
         FLUSH_VERTICES(ctx, _NEW_PIXEL);
         ctx->Pixel.PixelTextureEnabled = state;
         break;

      /* GL_SGIX_pixel_texture */
      case GL_PIXEL_TEX_GEN_SGIX:
         CHECK_EXTENSION(SGIX_pixel_texture, cap);
         if (ctx->Pixel.PixelTextureEnabled == state)
            return;
         FLUSH_VERTICES(ctx, _NEW_PIXEL);
         ctx->Pixel.PixelTextureEnabled = state;
         break;

      /* GL_SGI_color_table */
      case GL_COLOR_TABLE_SGI:
         CHECK_EXTENSION(SGI_color_table, cap);
         if (ctx->Pixel.ColorTableEnabled == state)
            return;
         FLUSH_VERTICES(ctx, _NEW_PIXEL);
         ctx->Pixel.ColorTableEnabled = state;
         break;
      case GL_POST_CONVOLUTION_COLOR_TABLE_SGI:
         CHECK_EXTENSION(SGI_color_table, cap);