evas/gl - fix to render grayscale with transparency format in gl backened.

In case of png, grayscale with transparency format (transparency doesn't mean the png has alpha channel)
gl doesn't prepare that format render.
In this case, set it argb8888 to convert the data in the png loader.

@fix

Conflicts:

	src/modules/evas/engines/gl_common/evas_gl_image.c

1 files changed, 7 insertions, 0 deletions

diff --git a/src/modules/evas/engines/gl_common/evas_gl_image.c b/src/modules/evas/engines/gl_common/evas_gl_image.c
index 248eb309ee..d579adab90 100644
--- a/src/modules/evas/engines/gl_common/evas_gl_image.c
+++ b/src/modules/evas/engines/gl_common/evas_gl_image.c
@@ -218,6 +218,13 @@ _evas_gl_common_image(Evas_Engine_GL_Context *gc, RGBA_Image *im_im, Evas_Image_
           }
 
         cspace = im_im->cache_entry.cspaces[i];
+
+        /* Current GL doesn't support grayscale with transparency
+           let it convert to argb8888 in loader */
+        if ((cspace == EVAS_COLORSPACE_GRY8) &&
+            im_im->cache_entry.flags.alpha)
+          cspace = EVAS_COLORSPACE_ARGB8888;
+
         im_im->cache_entry.space = cspace;
      }