st/dri2: Fake frontbuffer changes

	Front buffer rendering works as it stands but it completely
	wrong. But as it stands fake front buffer rendering is
	completely broken. So we keep it as it is. But lets atleast
	handle it in the get buffers code.

diff --git a/src/gallium/state_trackers/dri2/dri_drawable.c b/src/gallium/state_trackers/dri2/dri_drawable.c
index 8a00c6c..2f6913e 100644 (file)
--- a/src/gallium/state_trackers/dri2/dri_drawable.c
+++ b/src/gallium/state_trackers/dri2/dri_drawable.c
@@ -153,6 +153,10 @@ dri_get_buffers(__DRIdrawablePrivate *dPriv)
             index = ST_SURFACE_FRONT_LEFT;
             format = PIPE_FORMAT_A8R8G8B8_UNORM;
             break;
+         case __DRI_BUFFER_FAKE_FRONT_LEFT:
+            index = ST_SURFACE_FRONT_LEFT;
+            format = PIPE_FORMAT_A8R8G8B8_UNORM;
+            break;
          case __DRI_BUFFER_BACK_LEFT:
             index = ST_SURFACE_BACK_LEFT;
             format = PIPE_FORMAT_A8R8G8B8_UNORM;
@@ -275,7 +279,12 @@ dri_create_buffer(__DRIscreenPrivate *sPriv,
    /* setup dri2 buffers information */
    i = 0;
    drawable->attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
-   drawable->attachments[i++] = __DRI_BUFFER_BACK_LEFT;
+#if 0
+   /* TODO incase of double buffer visual, delay fake creation */
+   drawable->attachments[i++] = __DRI_BUFFER_FAKE_FRONT_LEFT;
+#endif
+   if (visual->doubleBufferMode)
+      drawable->attachments[i++] = __DRI_BUFFER_BACK_LEFT;
    if (visual->depthBits)
       drawable->attachments[i++] = __DRI_BUFFER_DEPTH;
    if (visual->stencilBits)