| Summary: |
[radeon-rewrite] ctx->Stencil._Enabled stale when accessed |
| Product: |
Mesa
|
Reporter: |
Owen Taylor <otaylor> |
| Component: |
Drivers/DRI/R100 | Assignee: |
Default DRI bug account <dri-devel> |
| Status: |
RESOLVED
FIXED
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QA Contact: |
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| Severity: |
normal
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| Priority: |
medium
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| Version: |
unspecified | |
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| Hardware: |
Other | |
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| OS: |
All | |
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| Whiteboard: |
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i915 platform:
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i915 features:
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| Attachments: |
Patch as described
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Sequence of events: radeon_clear_tris() - calls _mesa_Enable(GL_STENCIL_TEST); - Changes ctx->Stencil.Enabled - draws - ctx->Stencil._Enabled is updated to 1 - calls _mesa_PopAttrib(); - Restores ctx.Stencil.Enabled (but not _Enabled) - calls _mesa_DrawBuffer() - calls radeon_draw_buffer - accesses ctx->Stencil._Enabled, which is not up-to-date - Enables stenciling on the hardware So the hardware is left with stenciling on, and subsequent drawing vanishes. The patch I'll attach fixes the problem, I'm not sure if it's the best way to handle it.