| Summary: | [ILK] Piglit/spec/opengl_1.1/line-aa-width fails | ||
|---|---|---|---|
| Product: | Mesa | Reporter: | Rhys Kidd <rhyskidd> |
| Component: | Drivers/DRI/i965 | Assignee: | marius predut <marius.predut> |
| Status: | RESOLVED WONTFIX | QA Contact: | Intel 3D Bugs Mailing List <intel-3d-bugs> |
| Severity: | normal | ||
| Priority: | medium | CC: | christophe.prigent, huax.lu, rhyskidd |
| Version: | git | ||
| Hardware: | All | ||
| OS: | Linux (All) | ||
| See Also: |
https://bugs.freedesktop.org/show_bug.cgi?id=90367 https://bugs.freedesktop.org/show_bug.cgi?id=28832 |
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| Whiteboard: | |||
| i915 platform: | i915 features: | ||
| Attachments: |
Draw lines with small widths
simple line test ./simple_test image using i965 (ILK) ./simple_test image using llvmpipe |
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Please note this fails with and without Marius Predut's patch to this piglit test (found https://patchwork.freedesktop.org/patch/55901/ as not yet upstream). One patch for mesa and one for piglit are on the mailing list. (In reply to Rhys Kidd from comment #1) > Please note this fails with and without Marius Predut's patch to this piglit > test (found https://patchwork.freedesktop.org/patch/55901/ as not yet > upstream). you need also the mesa patch. Please check mesa mailing list. Your patch [0] on the Mesa mailing list is for i915 driver, so I can't see how that would fix ILK? [0]: https://patchwork.freedesktop.org/patch/61035/ Created attachment 119080 [details]
Draw lines with small widths
(In reply to marius predut from comment #5) > Created attachment 119080 [details] > Draw lines with small widths but, if you use this simple attached application to draw lines , do the line looks ok or it looks interrupted ? what kind of hw is this? (In reply to marius predut from comment #5) > Created attachment 119080 [details] > Draw lines with small widths Sorry, I don't follow. This is a Makefile rather than the actual simple_test.cpp I believe that you intended to attach. The hardware is Ironlake (i965 GEN5). Created attachment 119127 [details]
simple line test
missed file attached
Created attachment 119129 [details]
./simple_test image using i965 (ILK)
Marius' test case when run on i965 (ILK) and Mesa master (cfb67c3).
Demonstrates the "torn" look at narrow line widths.
Created attachment 119130 [details]
./simple_test image using llvmpipe
Marius' test case when run on llvmpipe and Mesa master (cfb67c3).
Does *not* demonstrate any "tearing" at narrow line widths.
This test has failed on ILK for at least a year, since I have been running it. It is possible that ILK does not have hardware support for rendering this test correctly. In this case the defect is fixed, only the pligit test needs more updates. Seems my latest piglit patch is not enough for this kind of kw. |
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System Environment: -------------------------- Software versions: 3.19.0-31-generic OpenGL version string: 2.1 Mesa 11.1.0-devel (git-7182498) GPU hardware: OpenGL renderer string: Mesa DRI Intel(R) Ironlake Mobile 00:02.0 VGA compatible controller [0300]: Intel Corporation Core Processor Integrated Graphics Controller [8086:0046] (rev 02) CPU hardware: x86_64 Intel(R) Core(TM) i5 CPU M 580 @ 2.67GHz Bug detailed description: ----------------------------- a9b04d8a0d96922a49ac7eb1b91b3a376a959f64 series fixed i965 gen6+ platforms, but ILK with the latest mesa master continues to fail this piglit test. Note i915 platforms such as PNV are separately tracked in bug 90367, as the fix will hit a different driver. Output: $ bin/line-aa-width -auto Line from 0,2-30,3 had bad thickness (min < 0.25): min coverage: 0.137255 avg coverage: 0.800302 max coverage: 1.000000 Line from 30,3-60,6 had bad thickness (avg / min > 2.0): min coverage: 0.407843 avg coverage: 0.834389 max coverage: 1.000000 PIGLIT: {"result": "fail" } Reproduce steps: ---------------------------- 1. xinit 2. bin/line-aa-width -auto