Bug 91834

Summary: [HSW] ES31-CTS.layout_binding.image2D_layout_binding_imageLoad_FragmentShader fails
Product: Mesa Reporter: Tapani Pälli <lemody>
Component: Drivers/DRI/i965Assignee: Ian Romanick <idr>
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:
Bug Depends on:    
Bug Blocks: 92778    

Description Tapani Pälli 2015-09-01 09:28:00 UTC 
When running

ES31-CTS.layout_binding.image2D_layout_binding_imageLoad_FragmentShader

with current Mesa (git-568594d) on Haswell (GT2) it fails like:

--- 8< ---
Maximum 133 registers live at once.
Mesa 11.1.0-devel implementation error: Failed to compile fragment shader: FS compile failed: no register to spill:
Comment 1 Ian Romanick 2015-11-02 17:33:03 UTC 
Are you still able to reproduce this?
Comment 2 Tapani Pälli 2015-11-03 08:54:50 UTC 
This got fixed by

commit 0a5a738252afdd64b778024bcd130473b9a6224e
Author: Kristian Høgsberg Kristensen <krh@bitplanet.net>
Date:   Tue Oct 20 23:31:49 2015 -0700

    i965/fs: Avoid scalar destinations in emit_uniformize()
    
    The scalar destination registers break copy propagation. Instead compute
    the results to a regular register and then reference a component when we
    later use the result as a source.
    
    Reviewed-by: Francisco Jerez <currojerez@riseup.net>
    Signed-off-by: Kristian Høgsberg Kristensen <krh@bitplanet.net>

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