1 files changed, 123 insertions, 0 deletions
diff --git a/src/gallium/drivers/nv50/nv50_surface.c b/src/gallium/drivers/nv50/nv50_surface.c
new file mode 100644
index 0000000000..5bf97d3a6b
--- /dev/null
+++ b/src/gallium/drivers/nv50/nv50_surface.c
@@ -0,0 +1,123 @@
+/*
+ * Copyright 2008 Ben Skeggs
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
+ * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include "nv50_context.h"
+#include "pipe/p_defines.h"
+#include "pipe/p_winsys.h"
+#include "pipe/p_inlines.h"
+
+#include "util/u_tile.h"
+
+static void
+nv50_surface_copy(struct pipe_context *pipe, boolean flip,
+		  struct pipe_surface *dest, unsigned destx, unsigned desty,
+		  struct pipe_surface *src, unsigned srcx, unsigned srcy,
+		  unsigned width, unsigned height)
+{
+	struct nv50_context *nv50 = (struct nv50_context *)pipe;
+	struct nouveau_winsys *nvws = nv50->screen->nvws;
+
+	if (flip) {
+		desty += height;
+		while (height--) {
+			nvws->surface_copy(nvws, dest, destx, desty--, src,
+					   srcx, srcy++, width, 1);
+		}
+	} else {
+		nvws->surface_copy(nvws, dest, destx, desty, src, srcx, srcy,
+				   width, height);
+	}
+}
+
+static void
+nv50_surface_fill(struct pipe_context *pipe, struct pipe_surface *dest,
+		  unsigned destx, unsigned desty, unsigned width,
+		  unsigned height, unsigned value)
+{
+	struct nv50_context *nv50 = (struct nv50_context *)pipe;
+	struct nouveau_winsys *nvws = nv50->screen->nvws;
+
+	nvws->surface_fill(nvws, dest, destx, desty, width, height, value);
+}
+
+static void *
+nv50_surface_map(struct pipe_screen *screen, struct pipe_surface *ps,
+		 unsigned flags )
+{
+	struct nouveau_winsys *nvws = nv50_screen(screen)->nvws;
+	struct pipe_winsys *ws = screen->winsys;
+	struct nv50_surface *s = nv50_surface(ps);
+	struct nv50_surface m = *s;
+	void *map;
+
+	if (!s->untiled) {
+		s->untiled = ws->buffer_create(ws, 0, 0, ps->buffer->size);
+
+		m.base.buffer = s->untiled;
+		nvws->surface_copy(nvws, &m.base, 0, 0, &s->base, 0, 0,
+					 ps->width, ps->height);
+	}
+
+	/* Map original tiled surface to disallow it being validated while
+	 * untiled mirror is mapped.
+	 */
+	ws->buffer_map(ws, ps->buffer, flags);
+
+	map = ws->buffer_map(ws, s->untiled, flags);
+	if (!map)
+		return NULL;
+
+	return map;
+}
+
+static void
+nv50_surface_unmap(struct pipe_screen *pscreen, struct pipe_surface *ps)
+{
+	struct nouveau_winsys *nvws = nv50_screen(pscreen)->nvws;
+	struct pipe_winsys *ws = pscreen->winsys;
+	struct nv50_surface *s = nv50_surface(ps);
+	struct nv50_surface m = *s;
+
+	ws->buffer_unmap(ws, s->untiled);
+	ws->buffer_unmap(ws, ps->buffer);
+
+	m.base.buffer = s->untiled;
+	nvws->surface_copy(nvws, &s->base, 0, 0, &m.base, 0, 0,
+				 ps->width, ps->height);
+
+	pipe_buffer_reference(pscreen, &s->untiled, NULL);
+}
+
+void
+nv50_init_surface_functions(struct nv50_context *nv50)
+{
+	nv50->pipe.surface_copy = nv50_surface_copy;
+	nv50->pipe.surface_fill = nv50_surface_fill;
+}
+
+void
+nv50_surface_init_screen_functions(struct pipe_screen *pscreen)
+{
+	pscreen->surface_map = nv50_surface_map;
+	pscreen->surface_unmap = nv50_surface_unmap;
+}
+