dav1dplay: support on-GPU film grain synthesis

Annoying minor differences in this struct layout mean we can't just
memcpy the entire thing. Oh well.

Note: technically, PL_API_VER 33 added this API, but PL_API_VER 63 is
the minimum version of libplacebo that doesn't have glaring bugs when
generating chroma grain, so we require that as a minimum instead.

(I tested this version on some 4:2:2 and 4:2:0, 8-bit and 10-bit grain
samples I had lying around and made sure the output was identical up to
differences in rounding / dithering.)

1 files changed, 3 insertions, 0 deletions

diff --git a/examples/dp_renderer.h b/examples/dp_renderer.h
index c3b2378..4c6f295 100644
--- a/examples/dp_renderer.h
+++ b/examples/dp_renderer.h
@@ -60,6 +60,7 @@ typedef struct {
     int highquality;
     int untimed;
     int zerocopy;
+    int gpugrain;
 } Dav1dPlaySettings;
 
 #define WINDOW_WIDTH  910
@@ -89,6 +90,8 @@ typedef struct rdr_info
     // Callback for alloc/release pictures (optional)
     int (*alloc_pic)(Dav1dPicture *pic, void *cookie);
     void (*release_pic)(Dav1dPicture *pic, void *cookie);
+    // Whether or not this renderer can apply on-GPU film grain synthesis
+    int supports_gpu_grain;
 } Dav1dPlayRenderInfo;
 
 extern const Dav1dPlayRenderInfo rdr_placebo_vk;