https://bugs.freedesktop.org/show_bug.cgi?id=71944
Priority: medium
Bug ID: 71944
Assignee: mesa-dev@lists.freedesktop.org
Summary: vs-temp-array-mat3-index-col-rd test fails with SB
Severity: normal
Classification: Unclassified
OS: Linux (All)
Reporter: g02ma...@gmail.com
Hardware: x86-64 (AMD64)
Status: NEW
Version: git
Component: Drivers/Gallium/r600
Product: Mesa
Created attachment 89688
--> https://bugs.freedesktop.org/attachment.cgi?id=89688&action=edit
Shader dump when test fails
I did a little investigation on why the piglit test:
vs-temp-array-mat3-index-col-rd fails with SB.
If I disable SB with R600_DEBUG=nosb the test passes.
I did a bisect and found this commit:
http://cgit.freedesktop.org/mesa/mesa/commit/?id=7ae9cc71f097af5ae1f83f77f75de2198849faca
If I revert that commit the test passes with SB, but I'm pretty sure that
commit only exposed a bug that weren't hit before.
I looked at the shader dumps and the only thing I found that looked a little
strange was this.
before: 7ae9cc71f097af5ae1f83f77f75de2198849faca
z: SETE T0.z, R[2+AR].y, KC0[2].y
w: SETE T1.w, R[2+AR].z, KC0[2].z
x: SETE T1.x, R[2+AR].x, KC0[2].x
after: 7ae9cc71f097af5ae1f83f77f75de2198849faca
w: SETE_DX10 T0.w, R[2+AR].z, KC0[2].z
z: SETE_DX10 T0.z, R[2+AR].y, KC0[2].y
x: SETE_DX10 T1.x, R[0+AR].x, KC0[2].x
Is R[0+AR].x correct in the last line or should it be R[2+AR].x?
Tested with mesa master: 751e8697f2099a0ceaba09e0d8775e4636f209b1
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