Compiz

[regression] [GLES] [nvidia] vertex_buffer_object slows frame rate in expo mode

Bug #1029346 reported by Daniel van Vugt
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Compiz
Triaged
Medium
Unassigned

Bug Description

Using nvidia-295.40, I notice rendering performance is lower with vertex_buffer_object enabled.

To reproduce:

1. Enable Benchmark and Expo plugins.
2. Start glxgears
3. Enter expo mode
4. Observe the benchmark frame rate.

With vertex_buffer_object enabled, it's around 30 FPS, sometimes up to 40. But if I disable vertex_buffer_object then it stays around 50 FPS.

Tags: gles
Revision history for this message
Daniel van Vugt (vanvugt) wrote : Re: [GLES] [nvidia] vertex_buffer_object slows frame rate in expo mode

Reduced Importance to Medium.

Further testing shows this slow-down only happens in expo mode, and only with the NVIDIA driver. In all other cases tested so far, vertex_buffer_object is not significantly slower.

summary: - [GLES] [nvidia] vertex_buffer_object slows frame rate
+ [GLES] [nvidia] vertex_buffer_object slows frame rate in expo mode
Changed in compiz:
importance: High → Medium
assignee: Daniel van Vugt (vanvugt) → Compiz Linaro Team (compiz-linaro-team)
Daniel van Vugt (vanvugt)
Changed in compiz:
assignee: Compiz Linaro Team (compiz-linaro-team) → nobody
summary: - [GLES] [nvidia] vertex_buffer_object slows frame rate in expo mode
+ [regression] [GLES] [nvidia] vertex_buffer_object slows frame rate in
+ expo mode
Changed in compiz:
milestone: 0.9.8.0 → none
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