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i965/brw: Fix emit_depthbuffer() when packed depth/stencil texture is attached

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If either depth or stencil buffer has packed depth/stencil format, then do
not use separate stencil.

Before this commit, emit_depthbuffer() incorrectly assumed that the
texture's stencil renderbuffer wrapper was a *separate* stencil buffer,
because the depth and stencil renderbuffer wrappers are distinct for
depth/stencil textures (that is, depth_irb != stencil_irb).

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=38134
Signed-off-by: Chad Versace <chad@chad-versace.us>
This commit is contained in:
Chad Versace
2011-06-10 10:27:54 -07:00
parent eca3e910ed
commit 97d230b0bc
1 changed files with 5 additions and 11 deletions
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src/mesa/drivers/dri/i965/brw_misc_state.c
+5 -11
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@@ -220,19 +220,13 @@ static void emit_depthbuffer(struct brw_context *brw)
unsigned int len;
/*
* If depth and stencil buffers are identical, then don't use separate
* stencil.
* If either depth or stencil buffer has packed depth/stencil format,
* then don't use separate stencil. Emit only a depth buffer.
*/
if (depth_irb && depth_irb == stencil_irb) {
if (depth_irb && depth_irb->Base.Format == MESA_FORMAT_S8_Z24) {
stencil_irb = NULL;
}
/*
* If stencil buffer uses combined depth/stencil format, but no depth buffer
* is attached, then use stencil buffer as depth buffer.
*/
if (!depth_irb && stencil_irb
&& stencil_irb->Base.Format == MESA_FORMAT_S8_Z24) {
} else if (!depth_irb && stencil_irb
&& stencil_irb->Base.Format == MESA_FORMAT_S8_Z24) {
depth_irb = stencil_irb;
stencil_irb = NULL;
}