nouveau: implement is_{texture,buffer}_referenced properly

3 files changed, 54 insertions, 1 deletions

diff --git a/src/gallium/drivers/nouveau/Makefile b/src/gallium/drivers/nouveau/Makefile
index dbe8a6e7bf5..0cb66041d50 100644
--- a/src/gallium/drivers/nouveau/Makefile
+++ b/src/gallium/drivers/nouveau/Makefile
@@ -3,6 +3,7 @@ include $(TOP)/configs/current
 
 LIBNAME = nouveau
 
-C_SOURCES = nouveau_screen.c
+C_SOURCES = nouveau_screen.c \
+	    nouveau_context.c
 
 include ../../Makefile.template
diff --git a/src/gallium/drivers/nouveau/nouveau_context.c b/src/gallium/drivers/nouveau/nouveau_context.c
new file mode 100644
index 00000000000..23443869e68
--- /dev/null
+++ b/src/gallium/drivers/nouveau/nouveau_context.c
@@ -0,0 +1,41 @@
+#include <pipe/p_defines.h>
+#include <pipe/p_context.h>
+
+#include "nouveau/nouveau_screen.h"
+#include "nouveau/nouveau_context.h"
+
+#include "nouveau/nouveau_bo.h"
+
+static unsigned int
+nouveau_reference_flags(struct nouveau_bo *bo)
+{
+	uint32_t bo_flags;
+	int flags = 0;
+
+	bo_flags = nouveau_bo_pending(bo);
+	if (bo_flags & NOUVEAU_BO_RD)
+		flags |= PIPE_REFERENCED_FOR_READ;
+	if (bo_flags & NOUVEAU_BO_WR)
+		flags |= PIPE_REFERENCED_FOR_WRITE;
+
+	return flags;
+}
+
+unsigned int
+nouveau_is_texture_referenced(struct pipe_context *pipe,
+			      struct pipe_texture *pt,
+			      unsigned face, unsigned level)
+{
+	struct nouveau_miptree *mt = nouveau_miptree(pt);
+
+	return nouveau_reference_flags(mt->bo);
+}
+
+unsigned int
+nouveau_is_buffer_referenced(struct pipe_context *pipe, struct pipe_buffer *pb)
+{
+	struct nouveau_bo *bo = nouveau_bo(pb);
+
+	return nouveau_reference_flags(bo);
+}
+
diff --git a/src/gallium/drivers/nouveau/nouveau_context.h b/src/gallium/drivers/nouveau/nouveau_context.h
new file mode 100644
index 00000000000..6a28d40da7b
--- /dev/null
+++ b/src/gallium/drivers/nouveau/nouveau_context.h
@@ -0,0 +1,11 @@
+#ifndef __NOUVEAU_CONTEXT_H__
+#define __NOUVEAU_CONTEXT_H__
+
+unsigned int
+nouveau_is_texture_referenced(struct pipe_context *, struct pipe_texture *,
+			      unsigned face, unsigned level);
+
+unsigned int
+nouveau_is_buffer_referenced(struct pipe_context *, struct pipe_buffer *);
+
+#endif