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authorChad Versace <chad.versace@linux.intel.com>2012-07-12 13:01:26 -0700
committerChad Versace <chad.versace@linux.intel.com>2012-08-07 09:30:33 -0700
commit61fd6847827048ce9b01b1d164111472ad8bf593 (patch)
tree9bc0c425a7c6d924c7db3e42b93639bb7bb30b0f /src/mesa/drivers/dri
parente88cfbb95f631ca1275a5cef4ccc5aaffb70aaba (diff)
intel: Downsample on DRI2 flush
Reviewed-by: Eric Anholt <eric@anholt.net> Reviewed-by: Paul Berry <stereotype441@gmail.com> Signed-off-by: Chad Versace <chad.versace@linux.intel.com>
Diffstat (limited to 'src/mesa/drivers/dri')
-rw-r--r--src/mesa/drivers/dri/intel/intel_screen.c31
1 files changed, 31 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/intel/intel_screen.c b/src/mesa/drivers/dri/intel/intel_screen.c
index 9aca4639d2..a3c0140542 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)