https://bugs.freedesktop.org/show_bug.cgi?id=74718

Priority: medium Bug ID: 74718 CC: airlied@freedesktop.org Assignee: dri-devel@lists.freedesktop.org Summary: r600g: graphics artifacts with geometry shaders Severity: normal Classification: Unclassified OS: All Reporter: edwin+mesa@etorok.net Hardware: Other Status: NEW Version: git Component: Drivers/DRI/R600 Product: Mesa

Created attachment 93670 --> https://bugs.freedesktop.org/attachment.cgi?id=93670&action=edit geometry.trace

This application uses a geometry shader, and runs without crashing, but there are graphics artifacts, see geometry.0000001176.png and geometry.0000001644.png:

Source code for the application can be found here: https://bitbucket.org/alfonse/gltut/src/1d1479cc7027f1e32c5adff748f3b296f193... https://bitbucket.org/alfonse/gltut/src/1d1479cc7027f1e32c5adff748f3b296f193... https://bitbucket.org/alfonse/gltut/src/1d1479cc7027f1e32c5adff748f3b296f193... https://bitbucket.org/alfonse/gltut/src/1d1479cc7027f1e32c5adff748f3b296f193...

It doesn't work exactly as is with the upstream source code, due to mismatching layouts between vert/geom/frag shader, but adding this to all shaders makes it run: layout(std140) uniform;

Let me know if a tarball with a working source code would help debugging or if the apitrace suffices.

I did an apitrace, and rerun it using llvmpipe forced to 3.3, and there are no artifacts there, see geometry.0000001176.good.png: $ MESA_GLSL_VERSION_OVERRIDE=330 MESA_GL_VERSION_OVERRIDE=3.3 LIBGL_ALWAYS_SOFTWARE=1 glretrace ./geometry.trace

Kernel is 3.14.0-rc1 + merge of 7c4c62a04a2a80e3feb5d6c97aca1e413b11c790 from drm-fixes: $ uname -a Linux debian 3.14.0-rc1-00015-g7c4c62a #48 SMP PREEMPT Sat Feb 8 17:33:48 EET 2014 x86_64 GNU/Linux

Mesa is from the 10.1 branch: $ glxinfo |grep OpenGL OpenGL vendor string: X.Org OpenGL renderer string: Gallium 0.4 on AMD RV730 OpenGL core profile version string: 3.3 (Core Profile) Mesa 10.1.0-rc1 (git-1e6bba5) OpenGL core profile shading language version string: 3.30 OpenGL core profile context flags: (none) OpenGL core profile profile mask: core profile OpenGL core profile extensions: OpenGL version string: 3.0 Mesa 10.1.0-rc1 (git-1e6bba5) OpenGL shading language version string: 1.30 OpenGL context flags: (none) OpenGL extensions:

Hardware is a Radeon HD 4650: 01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] RV730 PRO [Radeon HD 4650] (prog-if 00 [VGA controller])