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-rw-r--r--glamor/glamor_render.c25
1 files changed, 17 insertions, 8 deletions
diff --git a/glamor/glamor_render.c b/glamor/glamor_render.c
index 0417df4e6..d5737018f 100644
--- a/glamor/glamor_render.c
+++ b/glamor/glamor_render.c
@@ -766,18 +766,27 @@ glamor_set_normalize_tcoords_generic(PixmapPtr pixmap,
*
* We could support many more formats by using GL_ARB_texture_view to
* parse the same bits as different formats. For now, we only support
- * tweaking whether we sample the alpha bits of an a8r8g8b8, or just
- * force them to 1.
+ * tweaking whether we sample the alpha bits, or just force them to 1.
*/
static Bool
-glamor_render_format_is_supported(PictFormatShort format)
+glamor_render_format_is_supported(PicturePtr picture)
{
- switch (format) {
+ PictFormatShort storage_format;
+
+ /* Source-only pictures should always work */
+ if (!picture->pDrawable)
+ return TRUE;
+
+ storage_format = format_for_depth(picture->pDrawable->depth);
+
+ switch (picture->format) {
case PICT_x2r10g10b10:
+ return storage_format == PICT_x2r10g10b10;
case PICT_a8r8g8b8:
case PICT_x8r8g8b8:
+ return storage_format == PICT_a8r8g8b8 || storage_format == PICT_x8r8g8b8;
case PICT_a8:
- return TRUE;
+ return storage_format == PICT_a8;
default:
return FALSE;
}
@@ -815,7 +824,7 @@ glamor_composite_choose_shader(CARD8 op,
goto fail;
}
- if (!glamor_render_format_is_supported(dest->format)) {
+ if (!glamor_render_format_is_supported(dest)) {
glamor_fallback("Unsupported dest picture format.\n");
goto fail;
}
@@ -978,7 +987,7 @@ glamor_composite_choose_shader(CARD8 op,
goto fail;
}
} else {
- if (source && !glamor_render_format_is_supported(source->format)) {
+ if (source && !glamor_render_format_is_supported(source)) {
glamor_fallback("Unsupported source picture format.\n");
goto fail;
}
@@ -990,7 +999,7 @@ glamor_composite_choose_shader(CARD8 op,
goto fail;
}
} else if (mask) {
- if (!glamor_render_format_is_supported(mask->format)) {
+ if (!glamor_render_format_is_supported(mask)) {
glamor_fallback("Unsupported mask picture format.\n");
goto fail;
}