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swrast: don't try to do depth testing if there's no depth buffer

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Fixes piglit hiz-depth-stencil-test-fbo-d0-s8 crash.
See http://bugs.freedesktop.org/show_bug.cgi?id=37907

NOTE: This is a candidate for the 7.11 branch.
This commit is contained in:
Brian Paul 2011-08-11 08:52:41 -06:00
parent e411cd7b0a
commit 37a64baea8
1 changed files with 2 additions and 1 deletions
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src/mesa/swrast/s_stencil.c
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@ -462,7 +462,8 @@ stencil_and_ztest_span(struct gl_context *ctx, SWspan *span, GLuint face)
* Some fragments passed the stencil test, apply depth test to them
* and apply Zpass and Zfail stencil ops.
*/
if (ctx->Depth.Test == GL_FALSE) {
if (ctx->Depth.Test == GL_FALSE ||
ctx->DrawBuffer->_DepthBuffer == NULL) {
/*
* No depth buffer, just apply zpass stencil function to active pixels.
*/