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Diffstat (limited to 'src/mesa/drivers/dri/i915tex/intel_pixel_draw.c')
-rw-r--r--src/mesa/drivers/dri/i915tex/intel_pixel_draw.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/src/mesa/drivers/dri/i915tex/intel_pixel_draw.c b/src/mesa/drivers/dri/i915tex/intel_pixel_draw.c
index 46480da1b1..77c67c821e 100644
--- a/src/mesa/drivers/dri/i915tex/intel_pixel_draw.c
+++ b/src/mesa/drivers/dri/i915tex/intel_pixel_draw.c
@@ -363,9 +363,12 @@ intelDrawPixels(GLcontext * ctx,
if (INTEL_DEBUG & DEBUG_PIXEL)
_mesa_printf("%s: fallback to swrast\n", __FUNCTION__);
- if (ctx->FragmentProgram._Current ==
- ctx->FragmentProgram._TexEnvProgram) {
- /* don't want the i915 texenv program to be applied to DrawPixels */
+ if (ctx->FragmentProgram._Current == ctx->FragmentProgram._TexEnvProgram) {
+ /*
+ * We don't want the i915 texenv program to be applied to DrawPixels.
+ * This is really just a performance optimization (mesa will other-
+ * wise happily run the fragment program on each pixel in the image).
+ */
struct gl_fragment_program *fpSave = ctx->FragmentProgram._Current;
ctx->FragmentProgram._Current = NULL;
_swrast_DrawPixels( ctx, x, y, width, height, format, type,