radeonsi: don't invoke decompression inside internal launch_grid

Decompress resources properly but don't do it inside launch_grid
to prevent recursion.

Reviewed-by: Pierre-Eric Pelloux-Prayer <[email protected]>
Cc: 19.3 <[email protected]>

3 files changed, 22 insertions, 4 deletions

diff --git a/src/gallium/drivers/radeonsi/si_blit.c b/src/gallium/drivers/radeonsi/si_blit.c
index 5ac68406f7f..e662de16127 100644
--- a/src/gallium/drivers/radeonsi/si_blit.c
+++ b/src/gallium/drivers/radeonsi/si_blit.c
@@ -825,10 +825,10 @@ void si_decompress_textures(struct si_context *sctx, unsigned shader_mask)
  * blitting if any decompression is needed.
  * The driver doesn't decompress resources automatically while u_blitter is
  * rendering. */
-static void si_decompress_subresource(struct pipe_context *ctx,
-				      struct pipe_resource *tex,
-				      unsigned planes, unsigned level,
-				      unsigned first_layer, unsigned last_layer)
+void si_decompress_subresource(struct pipe_context *ctx,
+			       struct pipe_resource *tex,
+			       unsigned planes, unsigned level,
+			       unsigned first_layer, unsigned last_layer)
 {
 	struct si_context *sctx = (struct si_context *)ctx;
 	struct si_texture *stex = (struct si_texture*)tex;
diff --git a/src/gallium/drivers/radeonsi/si_compute_blit.c b/src/gallium/drivers/radeonsi/si_compute_blit.c
index ce25c3e4d8f..3e544d68500 100644
--- a/src/gallium/drivers/radeonsi/si_compute_blit.c
+++ b/src/gallium/drivers/radeonsi/si_compute_blit.c
@@ -66,6 +66,8 @@ static void si_launch_grid_internal(struct si_context *sctx,
 	sctx->flags &= ~SI_CONTEXT_START_PIPELINE_STATS;
 	sctx->flags |= SI_CONTEXT_STOP_PIPELINE_STATS;
 	sctx->render_cond_force_off = true;
+	/* Skip decompression to prevent infinite recursion. */
+	sctx->blitter->running = true;
 
 	/* Dispatch compute. */
 	sctx->b.launch_grid(&sctx->b, info);
@@ -74,6 +76,7 @@ static void si_launch_grid_internal(struct si_context *sctx,
 	sctx->flags &= ~SI_CONTEXT_STOP_PIPELINE_STATS;
 	sctx->flags |= SI_CONTEXT_START_PIPELINE_STATS;
 	sctx->render_cond_force_off = false;
+	sctx->blitter->running = false;
 }
 
 static void si_compute_clear_12bytes_buffer(struct si_context *sctx,
@@ -398,6 +401,12 @@ void si_compute_copy_image(struct si_context *sctx,
 	sctx->flags |= SI_CONTEXT_CS_PARTIAL_FLUSH |
 		       si_get_flush_flags(sctx, SI_COHERENCY_SHADER, L2_STREAM);
 
+	/* The driver doesn't decompress resources automatically here. */
+	si_decompress_subresource(ctx, dst, PIPE_MASK_RGBAZS, dst_level,
+				  dstz, dstz + src_box->depth - 1);
+	si_decompress_subresource(ctx, src, PIPE_MASK_RGBAZS, src_level,
+				  src_box->z, src_box->z + src_box->depth - 1);
+
 	/* src and dst have the same number of samples. */
 	si_make_CB_shader_coherent(sctx, src->nr_samples, true,
 				   /* Only src can have DCC.*/
@@ -676,6 +685,11 @@ void si_compute_clear_render_target(struct pipe_context *ctx,
 	if (width == 0 || height == 0)
 		return;
 
+	/* The driver doesn't decompress resources automatically here. */
+	si_decompress_subresource(ctx, dstsurf->texture, PIPE_MASK_RGBA,
+				  dstsurf->u.tex.level, dstsurf->u.tex.first_layer,
+				  dstsurf->u.tex.last_layer);
+
 	if (util_format_is_srgb(dstsurf->format)) {
 		union pipe_color_union color_srgb;
 		for (int i = 0; i < 3; i++)
diff --git a/src/gallium/drivers/radeonsi/si_pipe.h b/src/gallium/drivers/radeonsi/si_pipe.h
index c75b131f8c6..563a201ec33 100644
--- a/src/gallium/drivers/radeonsi/si_pipe.h
+++ b/src/gallium/drivers/radeonsi/si_pipe.h
@@ -1257,6 +1257,10 @@ void si_blitter_begin(struct si_context *sctx, enum si_blitter_op op);
 void si_blitter_end(struct si_context *sctx);
 void si_init_blit_functions(struct si_context *sctx);
 void si_decompress_textures(struct si_context *sctx, unsigned shader_mask);
+void si_decompress_subresource(struct pipe_context *ctx,
+			       struct pipe_resource *tex,
+			       unsigned planes, unsigned level,
+			       unsigned first_layer, unsigned last_layer);
 void si_resource_copy_region(struct pipe_context *ctx,
 			     struct pipe_resource *dst,
 			     unsigned dst_level,