[Bug 109738] Child of Light shows only a black screen

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=109738

            Bug ID: 109738
           Summary: Child of Light shows only a black screen
           Product: Mesa
           Version: git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/Iris
          Assignee: intel-3d-bugs at lists.freedesktop.org
          Reporter: leozinho29_eu at hotmail.com
        QA Contact: intel-3d-bugs at lists.freedesktop.org

Created attachment 143437
  --> https://bugs.freedesktop.org/attachment.cgi?id=143437&action=edit
Apitrace and Steam Play log

In the game Child of Light, played on Steam using Steam Play, it was noticed
the screen is entirely black. The sound effects and the game work correctly,
but the screen is entirely black, being impossible to see the game. Using i965
the game shows its graphics. The Steam logs have relevant messages as:

449855.540:009a:00a4:err:d3d:wined3d_debug_callback 0x22fee20:
"GL_INVALID_FRAMEBUFFER_OPERATION in glDrawArrays(incomplete framebuffer)".
449855.540:009a:00a4:fixme:d3d:context_check_fbo_status FBO status
GL_FRAMEBUFFER_UNSUPPORTED (0x8cdd).
449855.540:009a:00a4:fixme:d3d:context_dump_fbo_attachment    
GL_DEPTH_ATTACHMENT: 2d texture 19, 1280x720, 0 samples, format 0x88f0.
449855.540:009a:00a4:fixme:d3d:context_dump_fbo_attachment    
GL_STENCIL_ATTACHMENT: 2d texture 19, 1280x720, 0 samples, format 0x88f0.
449855.540:009a:00a4:fixme:d3d:context_dump_fbo_attachment    
GL_COLOR_ATTACHMENT0: 2d texture 11, 1280x720, 0 samples, format 0x8c41.
449855.540:009a:00a4:fixme:d3d:context_dump_fbo_attachment    
GL_COLOR_ATTACHMENT1: NONE.
449855.540:009a:00a4:fixme:d3d:context_dump_fbo_attachment    
GL_COLOR_ATTACHMENT2: NONE.
449855.540:009a:00a4:fixme:d3d:context_dump_fbo_attachment    
GL_COLOR_ATTACHMENT3: NONE.
449855.540:009a:00a4:fixme:d3d:context_dump_fbo_attachment    
GL_COLOR_ATTACHMENT4: NONE.
449855.540:009a:00a4:fixme:d3d:context_dump_fbo_attachment    
GL_COLOR_ATTACHMENT5: NONE.
449855.540:009a:00a4:fixme:d3d:context_dump_fbo_attachment    
GL_COLOR_ATTACHMENT6: NONE.
449855.540:009a:00a4:fixme:d3d:context_dump_fbo_attachment    
GL_COLOR_ATTACHMENT7: NONE.

I recorded an Apitrace and its replay is very strange: using default settings,
the replay is perfect, even if the screen is black in-game. If
MESA_LOADER_DRIVER_OVERRIDE=iris is set for apitrace replay, then the replay
screen is entirely black too.

The apitrace and Steam log are attached.

System specifications:

Processor: Intel Core i3-6100U;
Video: Intel HD Graphics 520;
Architecture: amd64;
RAM memory: 8 GB;
Mesa: 19.1.0-devel (git-b21de090d6);
Kernel version: 4.18.0-15-lowlatency;
Distribution: Xubuntu 18.04.1 amd64.

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