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-rw-r--r--src/mesa/main/readpix.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/src/mesa/main/readpix.c b/src/mesa/main/readpix.c
index df46f8361b9..9166a50c22e 100644
--- a/src/mesa/main/readpix.c
+++ b/src/mesa/main/readpix.c
@@ -54,7 +54,10 @@ need_rgb_to_luminance_conversion(mesa_format texFormat, GLenum format)
return (baseTexFormat == GL_RG ||
baseTexFormat == GL_RGB ||
baseTexFormat == GL_RGBA) &&
- (format == GL_LUMINANCE || format == GL_LUMINANCE_ALPHA);
+ (format == GL_LUMINANCE ||
+ format == GL_LUMINANCE_ALPHA ||
+ format == GL_LUMINANCE_INTEGER_EXT ||
+ format == GL_LUMINANCE_ALPHA_INTEGER_EXT);
}