| Summary: | [r200] piglit glean/blendFunc test fails | ||
|---|---|---|---|
| Product: | Mesa | Reporter: | Barto <mister.freeman> |
| Component: | Drivers/DRI/r200 | Assignee: | Default DRI bug account <dri-devel> |
| Status: | RESOLVED WONTFIX | QA Contact: | |
| Severity: | normal | ||
| Priority: | medium | ||
| Version: | 8.0 | ||
| Hardware: | x86 (IA32) | ||
| OS: | Linux (All) | ||
| Whiteboard: | |||
| i915 platform: | i915 features: | ||
IIRC radeon alpha blend units before r300 (maybe even later) had some precision issues, they just don't quite fulfill the requirements. So getting these errors is expected (it is just one bit of error after all), and it is unfixable. |
Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.
System configuration : - radeon 9000 AGP ( M9, rv250 ) - laptop pentium 4 2.4 Ghz 1.25 Gb ram - archlinux 32 bits Step to reproduce the bug - mesa 8.0.4 release ( but the bug occurs also with the git version ) - a graphic card who uses the r200 driver - install piglit ( git version ) - run the glean test "blendFunc" in piglit : ./piglit-run.py -t "glean/blendFunc" tests/quick.tests results/quick the glean/blendFunc will fail with these error messages : First failing pixel is at row 11 column 24 Actual values are (0, 0, 0, 0.54902) Expected values are (0, 0, 0, 0.557007) Errors are (0, 0, 0, 0.00798696) Source values are (0.462745, 0.756863, 0.662745, 0.546639) Destination values are (0.819608, 0.0980392, 0.615686, 0.0509804) blendFunc: FAIL rgba8, db, z24, s8, win+pmap, id 33 source factor RGB = GL_ZERO, source factor A = GL_ONE_MINUS_DST_COLOR dest factor RGB = GL_ZERO, dest factor A = GL_CONSTANT_COLOR equation RGB = GL_FUNC_ADD, equation A = GL_FUNC_ADD const color = { 0.25, 0, 1, 0.75 } Readback had 0 bits in error; blending had 1.03186 bits in error. First failing pixel is at row 7 column 27 Actual values are (0.682353, 0.682353, 0.92549, 0.756863) Expected values are (0.682353, 0.682353, 0.92549, 0.765417) Errors are (0, 0, 0, 0.0085544) Source values are (0.682353, 0.968627, 0.243137, 0.761929) Destination values are (0.682353, 0.682353, 0.92549, 0.0156863) blendFunc: FAIL rgba8, db, z24, s8, win+pmap, id 33 source factor RGB = GL_ZERO, source factor A = GL_ONE_MINUS_DST_COLOR dest factor RGB = GL_ONE, dest factor A = GL_ONE_MINUS_DST_ALPHA equation RGB = GL_FUNC_ADD, equation A = GL_FUNC_ADD const color = { 0.25, 0, 1, 0.75 } Readback had 0 bits in error; blending had 1.13088 bits in error. First failing pixel is at row 1 column 16 Actual values are (0.0705882, 0.298039, 0.243137, 0.74902) Expected values are (0.0693272, 0.296286, 0.245752, 0.756865) Errors are (0.00126106, 0.00175321, 0.00261439, 0.00784552) Source values are (0.909804, 0.694118, 0.0784314, 0.804654) Destination values are (0.768627, 0.968627, 0.266667, 0.0784314) blendFunc: FAIL rgba8, db, z24, s8, win+pmap, id 33 source factor RGB = GL_ZERO, source factor A = GL_ONE_MINUS_DST_COLOR dest factor RGB = GL_ONE_MINUS_SRC_COLOR, dest factor A = GL_ONE_MINUS_SRC_ALPHA equation RGB = GL_FUNC_ADD, equation A = GL_FUNC_ADD const color = { 0.25, 0, 1, 0.75 } Readback had 0 bits in error; blending had 1.00608 bits in error.