http://bugs.freedesktop.org/show_bug.cgi?id=14220
Summary: [Mesa core] depth texture mode GL_ALPHA not working
Product: Mesa
Version: unspecified
Platform: Other
OS/Version: Linux (All)
Status: NEW
Severity: normal
Priority: medium
Component: Mesa core
AssignedTo: [email protected]
ReportedBy: [EMAIL PROTECTED]
Created an attachment (id=13893)
--> (http://bugs.freedesktop.org/attachment.cgi?id=13893)
test case
System Environment:
--------------------------
kernel:
2.6.23
drm
commit c6f175cbea1dba3fc26426243acc55b89b8a8064
mesa
commit 02d5ba849197e19843dad164239b51f18fb16faf
xf86_video_intel
commit 633dbd28218fd8a746c1735fd44a14f35bd07faa
Bug detailed description:
--------------------------
for i915, i965 DRI is not working as well.
for 1D texture, specify depth texture's compare mode TO
GL_COMPARE_R_TO_TEXTURE_ARB, and compare func to GL_LEQUAL
texture mode to GL_ALPHA. apply the texture, but get incorrect alpha component.
Reproduce steps:
----------------
1. start X
2. compile and run attached test case
Current result:
----------------
alpha component is not correct.
Expected result:
----------------
alpha component should be correct.
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