[Mesa-dev] [PATCH 07/14] mesa: Set green, blue channels to zero only for formats with these components

[Anuj Phogat]

Signed-off-by: Anuj Phogat <anuj.phogat at gmail.com>
---
 src/mesa/drivers/common/meta.c | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/src/mesa/drivers/common/meta.c b/src/mesa/drivers/common/meta.c
index 214a68a..fceb25d 100644
--- a/src/mesa/drivers/common/meta.c
+++ b/src/mesa/drivers/common/meta.c
@@ -3132,9 +3132,16 @@ decompress_texture_image(struct gl_context *ctx,
        * returned as red and two-channel texture values are returned as
        * red/alpha.
        */
-      if ((baseTexFormat == GL_LUMINANCE ||
-           baseTexFormat == GL_LUMINANCE_ALPHA ||
-           baseTexFormat == GL_INTENSITY) ||
+      if (((baseTexFormat == GL_LUMINANCE ||
+            baseTexFormat == GL_LUMINANCE_ALPHA ||
+            baseTexFormat == GL_INTENSITY) &&
+           (destBaseFormat == GL_RGBA ||
+            destBaseFormat == GL_RGB ||
+            destBaseFormat == GL_RG ||
+            destBaseFormat == GL_GREEN ||
+            destBaseFormat == GL_BLUE ||
+            destBaseFormat == GL_BGRA ||
+            destBaseFormat == GL_BGR)) ||
           /* If we're reading back an RGB(A) texture (using glGetTexImage) as
 	   * luminance then we need to return L=tex(R).
 	   */
-- 
1.9.3