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authorIan Romanick <idr@freedesktop.org>2009-01-09 15:43:17 -0800
committerIan Romanick <ian.d.romanick@intel.com>2009-01-23 09:49:29 -0800
commitdde7cb962860e72e1bf3175069767358cc5b3f3c (patch)
tree64ca81d4f544ae7f28618c919af58a844f246de9 /src/mesa/swrast
parentaf0e6336e9d7dc19d74950ce13b33e1fa1b2081d (diff)
Track two sets of back-face stencil state
Track separate back-face stencil state for OpenGL 2.0 / GL_ATI_separate_stencil and GL_EXT_stencil_two_side. This allows all three to be enabled in a driver. One set of state is set via the 2.0 or ATI functions and is used when STENCIL_TEST_TWO_SIDE_EXT is disabled. The other is set by StencilFunc and StencilOp when the active stencil face is set to BACK. The GL_EXT_stencil_two_side spec has more details. http://opengl.org/registry/specs/EXT/stencil_two_side.txt
Diffstat (limited to 'src/mesa/swrast')
-rw-r--r--src/mesa/swrast/s_stencil.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/src/mesa/swrast/s_stencil.c b/src/mesa/swrast/s_stencil.c
index c925922463..2e84ddec71 100644
--- a/src/mesa/swrast/s_stencil.c
+++ b/src/mesa/swrast/s_stencil.c
@@ -997,10 +997,12 @@ stencil_and_ztest_pixels( GLcontext *ctx, SWspan *span, GLuint face )
GLboolean
_swrast_stencil_and_ztest_span(GLcontext *ctx, SWspan *span)
{
+ const GLuint face = (span->facing == 0) ? 0 : ctx->Stencil._BackFace;
+
if (span->arrayMask & SPAN_XY)
- return stencil_and_ztest_pixels(ctx, span, span->facing);
+ return stencil_and_ztest_pixels(ctx, span, face);
else
- return stencil_and_ztest_span(ctx, span, span->facing);
+ return stencil_and_ztest_span(ctx, span, face);
}