Bug 100582

Summary: [GEN8+] piglit.spec.arb_stencil_texturing.glblitframebuffer corrupts state.gl_texture* assertions
Product: Mesa Reporter: Mark Janes <mark.a.janes>
Component: Drivers/DRI/i965Assignee: Jason Ekstrand <jason>
Status: RESOLVED FIXED QA Contact: Intel 3D Bugs Mailing List <intel-3d-bugs>
Severity: normal    
Priority: medium    
Version: git   
Hardware: Other   
OS: All   
Whiteboard:
i915 platform: i915 features:

Description Mark Janes 2017-04-05 15:03:58 UTC 
several piglit tests assert following mesa f938354362655a378d474c5f79c52cea9852ab91:
Author:     Jason Ekstrand <jason@jlekstrand.net>
i965/blorp: Align vertex buffers to 64B

genX_blorp_exec.c:237: gen8_blorp_exec: Assertion `(USED_BATCH(brw->batch) - saved_used) * 4 + (saved_state_batch_offset - brw->batch.state_batch_offset) < estimated_max_batch_usage' failed.

piglit.spec.arb_framebuffer_object.framebuffer-blit-levels draw stencil
piglit.spec.arb_framebuffer_object.framebuffer-blit-levels read stencil
piglit.spec.arb_stencil_texturing.glblitframebuffer corrupts state.gl_texture_1d
piglit.spec.arb_stencil_texturing.glblitframebuffer corrupts state.gl_texture_1d_array
piglit.spec.arb_stencil_texturing.glblitframebuffer corrupts state.gl_texture_2d
piglit.spec.arb_stencil_texturing.glblitframebuffer corrupts state.gl_texture_2d_array
piglit.spec.arb_stencil_texturing.glblitframebuffer corrupts state.gl_texture_2d_multisample
piglit.spec.arb_stencil_texturing.glblitframebuffer corrupts state.gl_texture_2d_multisample_array
piglit.spec.arb_stencil_texturing.glblitframebuffer corrupts state.gl_texture_cube_map_array
piglit.spec.arb_stencil_texturing.glblitframebuffer corrupts state.gl_texture_rectangle
Comment 1 Jason Ekstrand 2017-04-06 20:33:07 UTC 
Fixed by the following commit in master:

commit c9c39812b91c8104bc0bea16053312547846249c
Author: Jason Ekstrand <jason.ekstrand@intel.com>
Date:   Wed Apr 5 13:41:56 2017 -0700

    i965/blorp: Bump the batch space estimate
    
    Commit f938354362655a378d474c5f79c52cea9852ab91 recently increased the
    alignment on vertex buffer data from 32 to 64.  This caused us to
    consume a bit more batch than we were before and we now go over the
    estimate by a small amount on certain blits on gen8+.  This commit bumps
    then gen8 batch estimate by a bit to compensate.  Haswell and older
    still seems to be well within the limit.
    
    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=100582
    Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
    Acked-by: Kenneth Graunke <kenneth@whitecape.org>
    Cc: "13.0 17.0" <mesa-stable@lists.freedesktop.org>

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