diff options
| author | Anuj Phogat <[email protected]> | 2012-01-24 20:06:27 -0800 |
|---|---|---|
| committer | Anuj Phogat <[email protected]> | 2012-01-27 13:22:52 -0800 |
| commit | 5665b5cc31da70e833f80e7a17bfa034d2f7ba44 (patch) | |
| tree | ff63d42568ea86f847c7679986ebf3b4ba2805ed /src | |
| parent | 5f65598cc79eccd38bf7f95ab167ed62e575daf2 (diff) | |
mesa: set clamp bit in glGetTexImage for GL_UNSIGNED_NORMALIZED
Color clamping should be enabled in glGetTexImage if texture dataType is
GL_UNSIGNED_NORMALIZED and format is GL_LUMINANCE or GL_LUMINANCE_ALPHA
Fixes 2 Intel oglconform test cases: pxconv-gettex and pxtrans-gettex
https://bugs.freedesktop.org/show_bug.cgi?id=40864
NOTE: This is a candidate for the 8.0 branch
Signed-off-by: Anuj Phogat <[email protected]>
Reviewed-by: Brian Paul <[email protected]>
Diffstat (limited to 'src')
| -rw-r--r-- | src/mesa/main/texgetimage.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/mesa/main/texgetimage.c b/src/mesa/main/texgetimage.c index 818deb8e41e..42495c8c750 100644 --- a/src/mesa/main/texgetimage.c +++ b/src/mesa/main/texgetimage.c @@ -462,6 +462,15 @@ get_tex_rgba(struct gl_context *ctx, GLuint dimensions, transferOps |= IMAGE_CLAMP_BIT; } } + /* This applies to RGB, RGBA textures. if the format is either LUMINANCE + * or LUMINANCE ALPHA, luminance (L) is computed as L=R+G+B .we need to + * clamp the sum to [0,1]. + */ + else if ((format == GL_LUMINANCE || + format == GL_LUMINANCE_ALPHA) && + dataType == GL_UNSIGNED_NORMALIZED) { + transferOps |= IMAGE_CLAMP_BIT; + } if (_mesa_is_format_compressed(texImage->TexFormat)) { get_tex_rgba_compressed(ctx, dimensions, format, type, |