| Bug ID | 98761 |
|---|---|
| Summary | [regression][radeonsi][polaris]"radeonsi: set IF_THRESHOLD to 3" breaks Wither2's ground |
| Product | Mesa |
| Version | git |
| Hardware | Other |
| OS | All |
| Status | NEW |
| Severity | normal |
| Priority | medium |
| Component | Drivers/Gallium/radeonsi |
| Assignee | dri-devel@lists.freedesktop.org |
| Reporter | arek.rusi@gmail.com |
| QA Contact | dri-devel@lists.freedesktop.org |
Created attachment 128044 [details] ground looks weird mesa/llvm git/trunk kernel 4.8.x & drm-next-4.10-wip this is happend on polaris(rx470) verde works corectly (for radeon drv, amdgpu not tested yet) bisected: 74e39de9324d2d2333cda6adca50ae2a3fc36de2 is the first bad commit commit 74e39de9324d2d2333cda6adca50ae2a3fc36de2 Author: Marek Olšák <marek.olsak@amd.com> Date: Fri Oct 28 23:08:50 2016 +0200 radeonsi: set IF_THRESHOLD to 3 Piglit regressions (radeonsi or LLVM bugs, they pass on softpipe): - glsl-1.10/execution/variable-indexing/vs-output-array-vec3-index-wr - glsl-1.10/execution/variable-indexing/vs-output-array-vec4-index-wr - glsl-110/execution/variable-indexing/vs-temp-array-mat2-index-col-row-wr - glsl-110/execution/variable-indexing/vs-temp-array-mat2-index-row-wr Totals: SGPRS: 1132185 -> 1168801 (3.23 %) VGPRS: 907856 -> 906204 (-0.18 %) Spilled SGPRs: 2011 -> 2425 (20.59 %) Spilled VGPRs: 368 -> 96 (-73.91 %) Scratch VGPRs: 1344 -> 1060 (-21.13 %) dwords per thread Code Size: 35916164 -> 35705372 (-0.59 %) bytes LDS: 767 -> 767 (0.00 %) blocks Max Waves: 194010 -> 194921 (0.47 %) Wait states: 0 -> 0 (0.00 %) Before: VGPR SPILLING APPS Shaders SpillVGPR ScratchVGPR alien_isolation 2938 38 40 bioshock-infinite 1769 245 732 dirt-showdown 548 85 72 f1-2015 776 0 320 ue4_lightroom_inter.. 74 0 180 After: VGPR SPILLING APPS Shaders SpillVGPR ScratchVGPR alien_isolation 2938 38 40 bioshock-infinite 1769 0 480 dirt-showdown 548 58 40 f1-2015 776 0 320 ue4_lightroom_inter.. 74 0 180 Bioshock and DiRT benefit. If I set IF_THRESHOLD=4, tesseract starts spilling VGPRs Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com> :040000 040000 2c773601e2956578e8da4a6031cb02837255b953 7d5f7c3faebe4a11631e70bde258d78fa7357008 M src
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