On 06/16/2014 08:45 PM, Robert Bragg wrote:
This is a regression test for a mesa meta bug fix whereby a swizzle set
via GL_ARB_texture_swizzle was being applied while iteratively
generating a mipmap. This meant the swizzle would be applied twice by
the time the application sampled those generated layers.
The bug was originally noticed with code that used a swizzle to emulate
a component alpha texture via a component red texture. In this case the
texture internally only had one component and applying the swizzle
effectively discarded that component. The test follows a similar
pattern, but swizzles from red to green instead of to alpha.
Reviewed-by: Brian Paul <[email protected]>
---
tests/all.py | 1 +
tests/fbo/CMakeLists.gl.txt | 1 +
tests/fbo/fbo-generatemipmap-swizzle.c | 165 +++++++++++++++++++++++++++++++++
3 files changed, 167 insertions(+)
create mode 100644 tests/fbo/fbo-generatemipmap-swizzle.c
LGTM.
-Brian
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