broadcom/vc4: Add support for YUV textures using unaccelerated blits.

[mesa.git] / src / gallium / drivers / vc4 / vc4_blit.c

diff --git a/src/gallium/drivers/vc4/vc4_blit.c b/src/gallium/drivers/vc4/vc4_blit.c
index 7f4c76968e775920a1f37d2ed59693fd11d1be77..f23f74c8f16987c1ff733d8ea17bcd53738070dd 100644 (file)
--- a/src/gallium/drivers/vc4/vc4_blit.c
+++ b/src/gallium/drivers/vc4/vc4_blit.c
@@ -183,6 +183,32 @@ vc4_blitter_save(struct vc4_context *vc4)
                         vc4->fragtex.num_textures, vc4->fragtex.textures);
 }
 
+static bool
+vc4_yuv_blit(struct pipe_context *pctx, const struct pipe_blit_info *info)
+{
+        struct vc4_resource *src = vc4_resource(info->src.resource);
+        struct vc4_resource *dst = vc4_resource(info->dst.resource);
+        bool ok;
+
+        if (src->tiled)
+                return false;
+        if (src->base.format != PIPE_FORMAT_R8_UNORM &&
+            src->base.format != PIPE_FORMAT_R8G8_UNORM)
+                return false;
+
+        /* YUV blits always turn raster-order to tiled */
+        assert(dst->base.format == src->base.format);
+        assert(dst->tiled);
+
+        /* Do an immediate SW fallback, since the render blit path
+         * would just recurse.
+         */
+        ok = util_try_blit_via_copy_region(pctx, info);
+        assert(ok); (void)ok;
+
+        return true;
+}
+
 static bool
 vc4_render_blit(struct pipe_context *ctx, struct pipe_blit_info *info)
 {
@@ -218,6 +244,9 @@ vc4_blit(struct pipe_context *pctx, const struct pipe_blit_info *blit_info)
 {
         struct pipe_blit_info info = *blit_info;
 
+        if (vc4_yuv_blit(pctx, blit_info))
+                return;
+
         if (vc4_tile_blit(pctx, blit_info))
                 return;