https://bugs.freedesktop.org/show_bug.cgi?id=65448
Priority: medium
Bug ID: 65448
Assignee: dri-devel at lists.freedesktop.org
Summary: Driver fails to compile complex shaders
Severity: normal
Classification: Unclassified
OS: Linux (All)
Reporter: greg at chown.ath.cx
Hardware: x86-64 (AMD64)
Status: NEW
Version: git
Component: Drivers/Gallium/r600
Product: Mesa
The r600 driver fails to translate TGSI to bytecode for complex shaders.
https://www.shadertoy.com/view/MdX3Rr is an example for this. The fragment
shader compiles into a pretty big TGSI program (about 6500 instructions). r600
takes a long time (tens of seconds) trying to transform it into bytecode, but
in then end it fails:
EE ../../../../../mesa/src/gallium/drivers/r600/r600_shader.c:158
r600_pipe_shader_create - translation from TGSI failed !
EE ../../../../../mesa/src/gallium/drivers/r600/r600_state_common.c:753
r600_shader_select - Failed to build shader variant (type=1) -1
This happens with many of the shaders from shadertoy.com.
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