| Summary: | Extra line segments in GL_LINE_LOOP | ||
|---|---|---|---|
| Product: | Mesa | Reporter: | Homer Hsing <dongsheng.xing> |
| Component: | Mesa core | Assignee: | mesa-dev |
| Status: | RESOLVED DUPLICATE | QA Contact: | |
| Severity: | normal | ||
| Priority: | low | ||
| Version: | git | ||
| Hardware: | x86-64 (AMD64) | ||
| OS: | All | ||
| Whiteboard: | |||
| i915 platform: | i915 features: | ||
| Attachments: |
code for reproducing the bug
wrong.png correct.png |
||
Created attachment 61422 [details]
wrong.png
Created attachment 61423 [details]
correct.png
I can confirm the same issue with llvmpipe 9.0.1 on Windows 7 / 64. Although it only flickers from time to time, either in the circle's color, or in black. WIP piglit test at anongit://people.freedesktop.org/~anholt/piglit lineloop-many that doesn't reproduce the problem There are pretty obvious bugs to be had in the vbo module with many verts of lineloops overflowing internal buffers using Begin/End. Of course, nobody should be using Begin/End today. |
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Created attachment 61421 [details] code for reproducing the bug Description: If we draw a GL_LINE_LOOP, we will see an extra line on it. See attached "wrong.png". System environment: Ubuntu 12.04 64-bit newest MESA code from git How to reproduce: compile attached "bug.cpp" g++ bug.cpp -lglut -lGL What should be the correct output: See attached "correct.png"