| Summary: | [PNV bisected] oglc fbo-multisample(basic.drawpixels.msaatosingle.depth) regressed | ||
|---|---|---|---|
| Product: | Mesa | Reporter: | fangxun <xunx.fang> |
| Component: | Drivers/DRI/i915 | Assignee: | Chad Versace <chadversary> |
| Status: | CLOSED WONTFIX | QA Contact: | |
| Severity: | normal | ||
| Priority: | low | CC: | eric |
| Version: | git | ||
| Hardware: | All | ||
| OS: | Linux (All) | ||
| See Also: | https://bugs.freedesktop.org/show_bug.cgi?id=50165 | ||
| Whiteboard: | |||
| i915 platform: | i915 features: | ||
| Bug Depends on: | |||
| Bug Blocks: | 42993 | ||
|
Description
fangxun
2012-02-10 04:15:20 UTC
I just tried the "last known good commit" (7722a54). Did this test ever actually work on i915 platforms? oglconform64: main/texfetch_tmp.h:2317: fetch_texel_2d_f_s8_z24: Assertion `texImage->TexFormat == MESA_FORMAT_S8_Z24' failed. (In reply to comment #1) > I just tried the "last known good commit" (7722a54). Did this test ever > actually work on i915 platforms? The missing sentence there is "and got the following assertion failure." > oglconform64: main/texfetch_tmp.h:2317: fetch_texel_2d_f_s8_z24: Assertion > `texImage->TexFormat == MESA_FORMAT_S8_Z24' failed. Never mind. I was able to bisect this bug to the following commit: commit af9548d3358884b408fb4c3cc69028befc5abe1d Author: Eric Anholt <eric@anholt.net> Date: Tue Jul 12 10:20:53 2011 -0700 i915: Add support for HW rendering with no color draw buffer. This is useful for shadow map generation. Tested with glsl-bug-22603, which rendered the depth textures with fallbacks before. Acked-by: Chad Versace <chad@chad-versace.us> Assigning to self (chad). This bug hasn't been updated in 6 months, and it appears to be low-hanging fruit. Changing importance=medium/minor. This test no longer aborts due to assertion failure. It fails due to unexpected depth values. The test should skip because MSAA is not supported on Pineview. Yet, oglconform runs the test anyway because But I don't know whose fault this is: Mesa's or OGLconform's. Undo last edit. I accidentally hit the Enter key. Oops. Note: this comment may help explain why oglconform is running msaa tests on Pineview (which doesn't support MSAA): https://bugs.freedesktop.org/show_bug.cgi?id=50165#c7 (Briefly, Mesa exposes EXT_framebuffer_multisample even on platforms that don't support multisampling, but it sets GL_MAX_SAMPLES_EXT to 1 to indicate that multisampling isn't actually supported. This is necessary because EXT_framebuffer_multisample is a required subpart of ARB_framebuffer_object, which those platforms do support). Unfortunately, that comment doesn't explain why the oglconform test has regressed. Dropping important to low/normal because this is an oglconform regression on Pineview. Status ASSIGNED -> NEW, because I'm actively working on it. NEW -> RESOLVED/WONTFIX This is an oglconform bug on Pineview. No one's working on it, and I doubt anyone ever will. |
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