| Bug ID | 105256 |
|---|---|
| Summary | Slow performance using glDrawElementsBaseVertex |
| Product | Mesa |
| Version | 17.3 |
| Hardware | Other |
| OS | Linux (All) |
| Status | NEW |
| Severity | normal |
| Priority | medium |
| Component | Drivers/Gallium/r600 |
| Assignee | dri-devel@lists.freedesktop.org |
| Reporter | logan@bacoosta.com |
| QA Contact | dri-devel@lists.freedesktop.org |
Original application bug report here: https://github.com/gonetz/GLideN64/issues/1561 This bug happens using mupen64plus (N64 emulator) and the GLideN64 graphics plugin. The application uses VBO streaming (https://www.khronos.org/opengl/wiki/Buffer_Object_Streaming) using ARB_buffer_storage to upload the VBO data. Multiple users that when using Mesa + r600 driver, the performance was abysmal. It turns out that converting the glDrawElementsBaseVertex calls to glDrawArrays fixed the problem. You can see the commit that fixed the problem here: https://github.com/loganmc10/GLideN64/commit/9bcfa67d9550c7f1cd4ba72f657facd66a4d27e4
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