1 files changed, 55 insertions, 0 deletions
diff --git a/src/gallium/drivers/r600/r600_state.c b/src/gallium/drivers/r600/r600_state.c
index be07f5feff8..e329317b3ab 100644
--- a/src/gallium/drivers/r600/r600_state.c
+++ b/src/gallium/drivers/r600/r600_state.c
@@ -46,6 +46,61 @@
 #include "r600_pipe.h"
 #include "r600_state_inlines.h"
 
+boolean r600_is_format_supported(struct pipe_screen *screen,
+				 enum pipe_format format,
+				 enum pipe_texture_target target,
+				 unsigned sample_count,
+				 unsigned usage)
+{
+	unsigned retval = 0;
+
+	if (target >= PIPE_MAX_TEXTURE_TYPES) {
+		R600_ERR("r600: unsupported texture type %d\n", target);
+		return FALSE;
+	}
+
+	if (!util_format_is_supported(format, usage))
+		return FALSE;
+
+	/* Multisample */
+	if (sample_count > 1)
+		return FALSE;
+
+	if ((usage & PIPE_BIND_SAMPLER_VIEW) &&
+	    r600_is_sampler_format_supported(screen, format)) {
+		retval |= PIPE_BIND_SAMPLER_VIEW;
+	}
+
+	if ((usage & (PIPE_BIND_RENDER_TARGET |
+		      PIPE_BIND_DISPLAY_TARGET |
+		      PIPE_BIND_SCANOUT |
+		      PIPE_BIND_SHARED)) &&
+	    r600_is_colorbuffer_format_supported(format)) {
+		retval |= usage &
+			  (PIPE_BIND_RENDER_TARGET |
+			   PIPE_BIND_DISPLAY_TARGET |
+			   PIPE_BIND_SCANOUT |
+			   PIPE_BIND_SHARED);
+	}
+
+	if ((usage & PIPE_BIND_DEPTH_STENCIL) &&
+	    r600_is_zs_format_supported(format)) {
+		retval |= PIPE_BIND_DEPTH_STENCIL;
+	}
+
+	if ((usage & PIPE_BIND_VERTEX_BUFFER) &&
+	    r600_is_vertex_format_supported(format)) {
+		retval |= PIPE_BIND_VERTEX_BUFFER;
+	}
+
+	if (usage & PIPE_BIND_TRANSFER_READ)
+		retval |= PIPE_BIND_TRANSFER_READ;
+	if (usage & PIPE_BIND_TRANSFER_WRITE)
+		retval |= PIPE_BIND_TRANSFER_WRITE;
+
+	return retval == usage;
+}
+
 void r600_polygon_offset_update(struct r600_pipe_context *rctx)
 {
 	struct r600_pipe_state state;