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-rw-r--r--src/mesa/swrast/s_readpix.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/mesa/swrast/s_readpix.c b/src/mesa/swrast/s_readpix.c
index 5604c2e937e..a201a631c90 100644
--- a/src/mesa/swrast/s_readpix.c
+++ b/src/mesa/swrast/s_readpix.c
@@ -195,6 +195,9 @@ fast_read_rgba_pixels( struct gl_context *ctx,
rb->_BaseFormat == GL_RGB ||
rb->_BaseFormat == GL_RG ||
rb->_BaseFormat == GL_RED ||
+ rb->_BaseFormat == GL_LUMINANCE ||
+ rb->_BaseFormat == GL_INTENSITY ||
+ rb->_BaseFormat == GL_LUMINANCE_ALPHA ||
rb->_BaseFormat == GL_ALPHA);
/* clipping should have already been done */