radeonsi: If pixel shader compilation fails, use a dummy shader.

Otherwise we're likely to hang the GPU.

Signed-off-by: Michel Dänzer <[email protected]>
Reviewed-by: Alex Deucher <[email protected]>

1 files changed, 10 insertions, 0 deletions

diff --git a/src/gallium/drivers/radeonsi/radeonsi_pipe.c b/src/gallium/drivers/radeonsi/radeonsi_pipe.c
index 3c5eaf7d61c..9ee96a06200 100644
--- a/src/gallium/drivers/radeonsi/radeonsi_pipe.c
+++ b/src/gallium/drivers/radeonsi/radeonsi_pipe.c
@@ -37,6 +37,7 @@
 #include "util/u_pack_color.h"
 #include "util/u_memory.h"
 #include "util/u_inlines.h"
+#include "util/u_simple_shaders.h"
 #include "util/u_upload_mgr.h"
 #include "vl/vl_decoder.h"
 #include "vl/vl_video_buffer.h"
@@ -171,6 +172,9 @@ static void r600_destroy_context(struct pipe_context *context)
 {
 	struct r600_context *rctx = (struct r600_context *)context;
 
+	if (rctx->dummy_pixel_shader) {
+		rctx->context.delete_fs_state(&rctx->context, rctx->dummy_pixel_shader);
+	}
 	rctx->context.delete_depth_stencil_alpha_state(&rctx->context, rctx->custom_dsa_flush);
 	util_unreference_framebuffer_state(&rctx->framebuffer);
 
@@ -251,6 +255,12 @@ static struct pipe_context *r600_create_context(struct pipe_screen *screen, void
 
 	r600_get_backend_mask(rctx); /* this emits commands and must be last */
 
+	rctx->dummy_pixel_shader =
+		util_make_fragment_cloneinput_shader(&rctx->context, 0,
+						     TGSI_SEMANTIC_GENERIC,
+						     TGSI_INTERPOLATE_CONSTANT);
+	rctx->context.bind_fs_state(&rctx->context, rctx->dummy_pixel_shader);
+
 	return &rctx->context;
 }