CC: Eric Anholt <e...@anholt.net>
Reviewed-by: Paul Berry <stereotype...@gmail.com>
Signed-off-by: Chad Versace <chad.vers...@linux.intel.com>
---
src/mesa/drivers/dri/intel/intel_screen.c | 31 +++++++++++++++++++++++++++++++
1 file changed, 31 insertions(+)
diff --git a/src/mesa/drivers/dri/intel/intel_screen.c
b/src/mesa/drivers/dri/intel/intel_screen.c
index 9aca463..a3c0140 100644
--- a/src/mesa/drivers/dri/intel/intel_screen.c
+++ b/src/mesa/drivers/dri/intel/intel_screen.c
@@ -150,6 +150,36 @@ static const __DRItexBufferExtension
intelTexBufferExtension = {
};
static void
+intel_downsample_for_dri2_flush(struct intel_context *intel,
+ __DRIdrawable *drawable)
+{
+ if (intel->gen < 6) {
+ /* MSAA is not supported, so don't waste time checking for
+ * a multisample buffer.
+ */
+ return;
+ }
+
+ struct gl_framebuffer *fb = drawable->driverPrivate;
+ struct intel_renderbuffer *rb;
+
+ /* Usually, only the back buffer will need to be downsampled. However,
+ * the front buffer will also need it if the user has rendered into it.
+ */
+ static const gl_buffer_index buffers[2] = {
+ BUFFER_BACK_LEFT,
+ BUFFER_FRONT_LEFT,
+ };
+
+ for (int i = 0; i < 2; ++i) {
+ rb = intel_get_renderbuffer(fb, buffers[i]);
+ if (rb == NULL || rb->mt == NULL)
+ continue;
+ intel_miptree_downsample(intel, rb->mt);
+ }
+}
+
+static void
intelDRI2Flush(__DRIdrawable *drawable)
{
GET_CURRENT_CONTEXT(ctx);
@@ -160,6 +190,7 @@ intelDRI2Flush(__DRIdrawable *drawable)
if (intel->gen < 4)
INTEL_FIREVERTICES(intel);
+ intel_downsample_for_dri2_flush(intel, drawable);
intel->need_throttle = true;
if (intel->batch.used)
--
1.7.11.4
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