egl_dri2: allow RGBA masks to be specified for matching
Add rgba_masks to dri2_add_config. When it is non-NULL, the DRI config
is accepted only when the offsets and sizes of the its channels match
rgba_mask.
Reviewed-by: Chad Versace <chad@chad-versace.us>
diff --git a/src/egl/drivers/dri2/egl_dri2.c b/src/egl/drivers/dri2/egl_dri2.c
index f09ae14..ba728a1 100644
--- a/src/egl/drivers/dri2/egl_dri2.c
+++ b/src/egl/drivers/dri2/egl_dri2.c
@@ -111,13 +111,15 @@
struct dri2_egl_config *
dri2_add_config(_EGLDisplay *disp, const __DRIconfig *dri_config, int id,
- int depth, EGLint surface_type, const EGLint *attr_list)
+ int depth, EGLint surface_type, const EGLint *attr_list,
+ const unsigned int *rgba_masks)
{
struct dri2_egl_config *conf;
struct dri2_egl_display *dri2_dpy;
_EGLConfig base;
unsigned int attrib, value, double_buffer;
EGLint key, bind_to_texture_rgb, bind_to_texture_rgba;
+ unsigned int dri_masks[4] = { 0, 0, 0, 0 };
_EGLConfig *matching_config;
EGLint num_configs = 0;
EGLint config_id;
@@ -165,6 +167,22 @@
double_buffer = value;
break;
+ case __DRI_ATTRIB_RED_MASK:
+ dri_masks[0] = value;
+ break;
+
+ case __DRI_ATTRIB_GREEN_MASK:
+ dri_masks[1] = value;
+ break;
+
+ case __DRI_ATTRIB_BLUE_MASK:
+ dri_masks[2] = value;
+ break;
+
+ case __DRI_ATTRIB_ALPHA_MASK:
+ dri_masks[3] = value;
+ break;
+
default:
key = dri2_to_egl_attribute_map[attrib];
if (key != 0)
@@ -180,6 +198,9 @@
if (depth > 0 && depth != base.BufferSize)
return NULL;
+ if (rgba_masks && memcmp(rgba_masks, dri_masks, sizeof(dri_masks)))
+ return NULL;
+
base.NativeRenderable = EGL_TRUE;
base.SurfaceType = surface_type;