- _mesa_unpack_float_color_span(ctx, width, GL_RGBA,
- &ctx->Separable2D.Filter[colStart],
- format, type, column, &ctx->Unpack,
- 0, GL_FALSE);
-
- /* apply scale and bias */
- {
- const GLfloat *scale = ctx->Pixel.ConvolutionFilterScale[2];
- const GLfloat *bias = ctx->Pixel.ConvolutionFilterBias[2];
- GLint i;
- for (i = 0; i < width; i++) {
- GLfloat r = ctx->Separable2D.Filter[i * 4 + 0 + colStart];
- GLfloat g = ctx->Separable2D.Filter[i * 4 + 1 + colStart];
- GLfloat b = ctx->Separable2D.Filter[i * 4 + 2 + colStart];
- GLfloat a = ctx->Separable2D.Filter[i * 4 + 3 + colStart];
- r = r * scale[0] + bias[0];
- g = g * scale[1] + bias[1];
- b = b * scale[2] + bias[2];
- a = a * scale[3] + bias[3];
- ctx->Separable2D.Filter[i * 4 + 0 + colStart] = r;
- ctx->Separable2D.Filter[i * 4 + 1 + colStart] = g;
- ctx->Separable2D.Filter[i * 4 + 2 + colStart] = b;
- ctx->Separable2D.Filter[i * 4 + 3 + colStart] = a;
- }
+ column = _mesa_map_validate_pbo_source(ctx, 1, &ctx->Unpack,
+ height, 1, 1,
+ format, type, column,
+ "glSeparableFilter2D");
+ if (column) {
+ _mesa_unpack_color_span_float(ctx, height, GL_RGBA,
+ &ctx->Separable2D.Filter[colStart],
+ format, type, column, &ctx->Unpack,
+ 0); /* transferOps */
+
+ _mesa_scale_and_bias_rgba(height,
+ (GLfloat (*)[4]) (ctx->Separable2D.Filter + colStart),
+ ctx->Pixel.ConvolutionFilterScale[2][0],
+ ctx->Pixel.ConvolutionFilterScale[2][1],
+ ctx->Pixel.ConvolutionFilterScale[2][2],
+ ctx->Pixel.ConvolutionFilterScale[2][3],
+ ctx->Pixel.ConvolutionFilterBias[2][0],
+ ctx->Pixel.ConvolutionFilterBias[2][1],
+ ctx->Pixel.ConvolutionFilterBias[2][2],
+ ctx->Pixel.ConvolutionFilterBias[2][3]);
+ _mesa_unmap_pbo_source(ctx, &ctx->Unpack);
+ }
+
+ if (_mesa_is_bufferobj(ctx->Unpack.BufferObj)) {
+ ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
+ ctx->Unpack.BufferObj);