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authorNicolai Haehnle <nhaehnle@gmail.com>2009-02-15 13:34:43 +0100
committerNicolai Haehnle <nhaehnle@gmail.com>2009-02-18 21:52:51 +0100
commitbe3813d58adc0060c9f7a13ac7865217b96ea477 (patch)
treef98c36e2c18e564fed61e37773dc5778c64df204 /src/mesa/swrast
parent621c999d823eed077aee9ac0779077ba2f0c5e5a (diff)
swrast: Set vp_override flag during DrawPixels
Obviously, the color of fragments produced by DrawPixels is not constant, even if the current vertex array / vertex program state indicates that the color for normal rendering will be constant. Therefore, we need to override certain optimisations that have been added to texenvprogram.c Signed-off-by: Nicolai Haehnle <nhaehnle@gmail.com>
Diffstat (limited to 'src/mesa/swrast')
-rw-r--r--src/mesa/swrast/s_drawpix.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/src/mesa/swrast/s_drawpix.c b/src/mesa/swrast/s_drawpix.c
index 700f76d4bc..a9ef8e685f 100644
--- a/src/mesa/swrast/s_drawpix.c
+++ b/src/mesa/swrast/s_drawpix.c
@@ -829,6 +829,15 @@ _swrast_DrawPixels( GLcontext *ctx,
const GLvoid *pixels )
{
SWcontext *swrast = SWRAST_CONTEXT(ctx);
+ GLboolean save_vp_override = ctx->VertexProgram._Overriden;
+
+ /* We are creating fragments directly, without going through vertex programs.
+ *
+ * This override flag tells the fragment processing code that its input comes
+ * from a non-standard source, and it may therefore not rely on optimizations
+ * that assume e.g. constant color if there is no color vertex array.
+ */
+ _mesa_set_vp_override(ctx, GL_TRUE);
swrast_render_start(ctx);
@@ -841,6 +850,7 @@ _swrast_DrawPixels( GLcontext *ctx,
pixels = _mesa_map_drawpix_pbo(ctx, unpack, pixels);
if (!pixels) {
swrast_render_finish(ctx);
+ _mesa_set_vp_override(ctx, save_vp_override);
return;
}
@@ -880,6 +890,7 @@ _swrast_DrawPixels( GLcontext *ctx,
}
swrast_render_finish(ctx);
+ _mesa_set_vp_override(ctx, save_vp_override);
_mesa_unmap_drawpix_pbo(ctx, unpack);
}