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i830: Fix culling with user fbos on gen2

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Flip the cull bits when rendering to a user fbo on gen2. This
was already done on gen3 (since before git history starts)
but was missing from the gen2 code.

Fixes rendering of the driver+kart model in supertuxkart kart
selection screen.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
This commit is contained in:
Ville Syrjälä
2015-03-23 14:47:35 +02:00
committed by Ian Romanick
parent 3e2c7ca773
commit 021f15816e
1 changed files with 2 additions and 0 deletions
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src/mesa/drivers/dri/i915/i830_state.c
+2
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@@ -601,6 +601,8 @@ i830CullFaceFrontFace(struct gl_context * ctx, GLenum unused)
else if (ctx->Polygon.CullFaceMode != GL_FRONT_AND_BACK) {
mode = CULLMODE_CW;
if (ctx->DrawBuffer && _mesa_is_user_fbo(ctx->DrawBuffer))
mode ^= (CULLMODE_CW ^ CULLMODE_CCW);
if (ctx->Polygon.CullFaceMode == GL_FRONT)
mode ^= (CULLMODE_CW ^ CULLMODE_CCW);
if (ctx->Polygon.FrontFace != GL_CCW)