Mesa (master): r300g: add flush_frontbuffer function to display video surface

[Cooper Yuan]

Module: Mesa
Branch: master
Commit: 6df12aad2fcdc30b200142a86c762b5e60e4b05e
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=6df12aad2fcdc30b200142a86c762b5e60e4b05e

Author: Cooper Yuan <cooperyuan at gmail.com>
Date:   Fri Oct 23 14:46:29 2009 +0800

r300g: add flush_frontbuffer function to display video surface

---

 src/gallium/winsys/drm/radeon/core/radeon_buffer.c |   52 +++++++++++++++++++-
 1 files changed, 51 insertions(+), 1 deletions(-)

diff --git a/src/gallium/winsys/drm/radeon/core/radeon_buffer.c b/src/gallium/winsys/drm/radeon/core/radeon_buffer.c
index 7bf23cb..beb1d6d 100644
--- a/src/gallium/winsys/drm/radeon/core/radeon_buffer.c
+++ b/src/gallium/winsys/drm/radeon/core/radeon_buffer.c
@@ -33,6 +33,14 @@
 #include "radeon_buffer.h"
 
 #include "radeon_bo_gem.h"
+#include "softpipe/sp_texture.h"
+#include <X11/Xutil.h>
+struct radeon_vl_context
+{
+    Display *display;
+    int screen;
+    Drawable drawable;
+};
 
 static const char *radeon_get_name(struct pipe_winsys *ws)
 {
@@ -183,11 +191,53 @@ static int radeon_fence_finish(struct pipe_winsys *ws,
     return 0;
 }
 
+static void radeon_display_surface(struct pipe_winsys *pws,
+                                   struct pipe_surface *psurf,
+                                   struct radeon_vl_context *rvl_ctx)
+{
+    struct r300_texture *r300tex = (struct r300_texture *)(psurf->texture);
+    XImage *ximage;
+    void *data;
+
+    ximage = XCreateImage(rvl_ctx->display,
+                          XDefaultVisual(rvl_ctx->display, rvl_ctx->screen),
+                          XDefaultDepth(rvl_ctx->display, rvl_ctx->screen),
+                          ZPixmap, 0,   /* format, offset */
+                          NULL,         /* data */
+                          0, 0,         /* size */
+                          32,           /* bitmap_pad */
+                          0);           /* bytes_per_line */
+
+    assert(ximage->format);
+    assert(ximage->bitmap_unit);
+
+    data = pws->buffer_map(pws, r300tex->buffer, 0);
+
+    /* update XImage's fields */
+    ximage->data = data;
+    ximage->width = psurf->width;
+    ximage->height = psurf->height;
+    ximage->bytes_per_line = r300tex->stride_override;
+
+    XPutImage(rvl_ctx->display, rvl_ctx->drawable,
+              XDefaultGC(rvl_ctx->display, rvl_ctx->screen),
+              ximage, 0, 0, 0, 0, psurf->width, psurf->height);
+
+    XSync(rvl_ctx->display, 0);
+
+    ximage->data = NULL;
+    XDestroyImage(ximage);
+
+    pws->buffer_unmap(pws, r300tex->buffer);
+}
+
 static void radeon_flush_frontbuffer(struct pipe_winsys *pipe_winsys,
                                      struct pipe_surface *pipe_surface,
                                      void *context_private)
 {
-    /* XXX TODO: call dri2CopyRegion */
+    struct radeon_vl_context *rvl_ctx;
+    rvl_ctx = (struct radeon_vl_context *) context_private;
+    radeon_display_surface(pipe_winsys, pipe_surface, rvl_ctx);
 }
 
 struct radeon_winsys* radeon_pipe_winsys(int fd)