| Bug ID | 105934 |
|---|---|
| Summary | Gpu Hang after two compute dispatches on Intel HD 5500 |
| Product | Mesa |
| Version | unspecified |
| Hardware | x86-64 (AMD64) |
| OS | Linux (All) |
| Status | NEW |
| Severity | major |
| Priority | medium |
| Component | Drivers/DRI/i915 |
| Assignee | dri-devel@lists.freedesktop.org |
| Reporter | mankeli@kolumbus.fi |
| QA Contact | dri-devel@lists.freedesktop.org |
Running OpenGL program with two glDispatch() calls, causes gpu hang on HD
Graphics 5500.
Program basically does:
if (1)
{
glUseProgram(computeprogram);
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 1, ssbo_test);
glDispatchCompute(256/4, 256/4, 256/2);
glMemoryBarrier(GL_SHADER_STORAGE_BARRIER_BIT);
}
if (1)
{
glUseProgram(computeprogram);
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 1, ssbo_test);
glDispatchCompute(256/4, 256/4, 256/2);
glMemoryBarrier(GL_SHADER_STORAGE_BARRIER_BIT);
}
.. and then simple one-triangle fullscreen pass to main framebuffer (0) using
that SSBO.
When both of those are enabled, my computer nearly hangs and dmesg reports:
[127049.481163] drm/i915: Resetting chip after gpu hang.
But if only one of those is enabled, everything is ok, compute dispatch takes
13ms and debug output renders on the screen.
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