[5/9] panfrost: Bail out early when doing a wallpaper blit

Submitted by Boris Brezillon on Aug. 2, 2019, 10:12 a.m.

Details

Message ID 20190802101257.10495-6-boris.brezillon@collabora.com
State New
Headers show
Series "panfrost: Allocate the polygon lists on-demand" ( rev: 1 ) in Mesa

Commit Message

Boris Brezillon Aug. 2, 2019, 10:12 a.m.
The wallpaper blit is a bit special in that the operation is targetting
the current FB, but the u_blitter logic creates a new surface for it
which makes util_framebuffer_state_equal() return false. In that case
we don't want a new FB descriptor to be emitted/attached, so let's just
copy the new state into ctx->pipe_framebuffer and exit the function.

Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
---
 src/gallium/drivers/panfrost/pan_context.c | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

Patch hide | download patch | download mbox

diff --git a/src/gallium/drivers/panfrost/pan_context.c b/src/gallium/drivers/panfrost/pan_context.c
index d442ae1f2433..1091caeb1148 100644
--- a/src/gallium/drivers/panfrost/pan_context.c
+++ b/src/gallium/drivers/panfrost/pan_context.c
@@ -2369,10 +2369,22 @@  panfrost_set_framebuffer_state(struct pipe_context *pctx,
         if (util_framebuffer_state_equal(&ctx->pipe_framebuffer, fb))
                 return;
 
-        if (!ctx->wallpaper_batch && (!is_scanout || has_draws)) {
-                panfrost_flush(pctx, NULL, PIPE_FLUSH_END_OF_FRAME);
+        /* The wallpaper logic sets a new FB state before doing the blit and
+         * restore the old one when it's done. Those FB states are reported to
+         * be different because the surface they are pointing to are different,
+         * but those surfaces actually point to the same cbufs/zbufs. In that
+         * case we definitely don't want new FB descs to be emitted/attached
+         * since the job is expected to be flushed just after the blit is done,
+         * so let's just copy the new state and return here.
+         */
+        if (ctx->wallpaper_batch) {
+                util_copy_framebuffer_state(&ctx->pipe_framebuffer, fb);
+                return;
         }
 
+        if (!is_scanout || has_draws)
+                panfrost_flush(pctx, NULL, PIPE_FLUSH_END_OF_FRAME);
+
         util_copy_framebuffer_state(&ctx->pipe_framebuffer, fb);
 
         /* Given that we're rendering, we'd love to have compression */

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