panfrost: Emit SFBD/MFBD after a batch, instead of before

The size of the scratchpad (as well as some tiler details) depend on the
contents of the batch, so we need to wait to defer filling out the FBD
until after all draws are queued.

Signed-off-by: Alyssa Rosenzweig <[email protected]>

1 files changed, 31 insertions, 0 deletions

diff --git a/src/gallium/drivers/panfrost/pan_sfbd.c b/src/gallium/drivers/panfrost/pan_sfbd.c
index 9bbc875d98a..ccf23253b51 100644
--- a/src/gallium/drivers/panfrost/pan_sfbd.c
+++ b/src/gallium/drivers/panfrost/pan_sfbd.c
@@ -194,6 +194,37 @@ panfrost_sfbd_set_zsbuf(
                 unreachable("Unsupported depth/stencil format.");
 }
 
+
+static struct mali_single_framebuffer
+panfrost_emit_sfbd(struct panfrost_batch *batch, unsigned vertex_count)
+{
+        unsigned width = batch->key.width;
+        unsigned height = batch->key.height;
+
+        struct mali_single_framebuffer framebuffer = {
+                .width = MALI_POSITIVE(width),
+                .height = MALI_POSITIVE(height),
+                .unknown2 = 0x1f,
+                .format = {
+                        .unk3 = 0x3,
+                },
+                .clear_flags = 0x1000,
+                .scratchpad = panfrost_batch_get_scratchpad(batch)->gpu,
+                .tiler = panfrost_emit_midg_tiler(batch, vertex_count),
+        };
+
+        return framebuffer;
+}
+
+void
+panfrost_attach_sfbd(struct panfrost_batch *batch, unsigned vertex_count)
+{
+        struct mali_single_framebuffer sfbd =
+                panfrost_emit_sfbd(batch, vertex_count);
+
+        memcpy(batch->framebuffer.cpu, &sfbd, sizeof(sfbd));
+}
+
 /* Creates an SFBD for the FRAGMENT section of the bound framebuffer */
 
 mali_ptr