| Bug ID | 88642 |
|---|---|
| Summary | Trilinear sampling on cubemap wrongly sampled at the border of rasterized triangle on HAWAII |
| Product | Mesa |
| Version | 10.4 |
| Hardware | x86-64 (AMD64) |
| OS | Linux (All) |
| Status | NEW |
| Severity | normal |
| Priority | medium |
| Component | Drivers/Gallium/radeonsi |
| Assignee | dri-devel@lists.freedesktop.org |
| Reporter | vljn@ovi.com |
| QA Contact | dri-devel@lists.freedesktop.org |
Created attachment 112566 [details]
Test case
Hi,
on a R290X with a fresh fedora 21 install (Mesa 10.4.1) a fragment shader
sampling a cubemap texture with trilinear filtering is not correctly executed
on the edge of rasterized triangles.
I've included a patch against piglit that display the behaviour. On my system
the test display a small orange diagonal line on top of the color pattern.
(the test doesn't check result atm)
I think it's related to some quad pattern : in my app that has a depth buffer
the line follows the edge of the geometry.
| What | Removed | Added |
|---|---|---|
| Attachment #112567 mime type | text/plain | image/png |
That kind of artifacts is usually due to whole quad mode not b= eing enabled when it should be. The LLVM patch http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-M= on-20150119/254035.html fixes it.
| What | Removed | Added |
|---|---|---|
| CC | smoki00790@gmail.com |
| What | Removed | Added |
|---|---|---|
| Status | NEW | RESOLVED |
| Resolution | --- | FIXED |
Author: daenzer Date: Thu Feb 5 20:51:20 2015 New Revision: 228372 URL: http://llvm.org/viewvc/llvm-project?rev=3D228372&view=3Drev Log: R600/SI: Also enable WQM for image opcodes which calculate LOD v3