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authormarha <marha@users.sourceforge.net>2011-07-29 09:02:30 +0200
committermarha <marha@users.sourceforge.net>2011-07-29 09:02:30 +0200
commit28257038c4f13ac26127d536c14c922aa036efed (patch)
tree12972a932e1c9f6cd4b3898dbc09cbf43bd16b0d /mesalib/src/mesa/drivers/common/meta.c
parent01dc3700436c1fa006d38434e110b68b5d9702ce (diff)
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libX11 mesa pixman git update 29 jul 2011
Diffstat (limited to 'mesalib/src/mesa/drivers/common/meta.c')
-rw-r--r--mesalib/src/mesa/drivers/common/meta.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/mesalib/src/mesa/drivers/common/meta.c b/mesalib/src/mesa/drivers/common/meta.c
index 26c895196..f9b475598 100644
--- a/mesalib/src/mesa/drivers/common/meta.c
+++ b/mesalib/src/mesa/drivers/common/meta.c
@@ -2869,6 +2869,16 @@ copy_tex_sub_image(struct gl_context *ctx,
/* Choose format/type for temporary image buffer */
format = _mesa_get_format_base_format(texImage->TexFormat);
+ if (format == GL_LUMINANCE ||
+ format == GL_LUMINANCE_ALPHA ||
+ format == GL_INTENSITY) {
+ /* We don't want to use GL_LUMINANCE, GL_INTENSITY, etc. for the
+ * temp image buffer because glReadPixels will do L=R+G+B which is
+ * not what we want (should be L=R).
+ */
+ format = GL_RGBA;
+ }
+
type = get_temp_image_type(ctx, format);
bpp = _mesa_bytes_per_pixel(format, type);
if (bpp <= 0) {