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-rw-r--r--src/mesa/main/texstore.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/src/mesa/main/texstore.c b/src/mesa/main/texstore.c
index e4c3f6651d..d46b23c803 100644
--- a/src/mesa/main/texstore.c
+++ b/src/mesa/main/texstore.c
@@ -1079,6 +1079,12 @@ _mesa_texstore_rgba8888(STORE_PARAMS)
srcType == GL_UNSIGNED_BYTE &&
dstFormat == &_mesa_texformat_rgba8888 &&
littleEndian &&
+ /* Three texture formats involved: srcFormat,
+ * baseInternalFormat and destFormat (GL_RGBA). Only two
+ * may differ. _mesa_swizzle_ubyte_image can't handle two
+ * propagations at once correctly. */
+ (srcFormat == baseInternalFormat ||
+ baseInternalFormat == GL_RGBA) &&
can_swizzle(srcFormat)) {
GLubyte dstmap[4];
@@ -1252,6 +1258,12 @@ _mesa_texstore_argb8888(STORE_PARAMS)
dstFormat == &_mesa_texformat_argb8888 &&
srcType == GL_UNSIGNED_BYTE &&
littleEndian &&
+ /* Three texture formats involved: srcFormat,
+ * baseInternalFormat and destFormat (GL_RGBA). Only two
+ * may differ. _mesa_swizzle_ubyte_image can't handle two
+ * propagations at once correctly. */
+ (srcFormat == baseInternalFormat ||
+ baseInternalFormat == GL_RGBA) &&
can_swizzle(srcFormat)) {
GLubyte dstmap[4];