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authorBrian Paul <brianp@vmware.com>2009-05-01 12:28:57 -0600
committerBrian Paul <brianp@vmware.com>2009-05-01 12:54:20 -0600
commitb57b6c2d2c83aee96f945ce3385a1ab8337335cb (patch)
tree0eb263b8246bc70c85ab6a847614a9db99ceedf0 /src/gallium/state_trackers
parent3f52a853f795d7432b181de81da6f0c4cf1cc202 (diff)
xlib winsys: use new st_swapbuffers() function
The front/back buffer pointers are truly swapped (when there is an actual front buffer). This fixes some issues seen with apps/tests that draw to both the front and back color buffers. The true swap allows us to avoid the (potentially) slow surface_copy() call in update_framebuffer_state() and is cleaner overall.
Diffstat (limited to 'src/gallium/state_trackers')
-rw-r--r--src/gallium/state_trackers/glx/xlib/xm_api.c21
1 files changed, 7 insertions, 14 deletions
diff --git a/src/gallium/state_trackers/glx/xlib/xm_api.c b/src/gallium/state_trackers/glx/xlib/xm_api.c
index a3d1651653..79c2230588 100644
--- a/src/gallium/state_trackers/glx/xlib/xm_api.c
+++ b/src/gallium/state_trackers/glx/xlib/xm_api.c
@@ -1100,26 +1100,19 @@ XMesaContext XMesaGetCurrentContext( void )
-
-
-
-/*
- * Copy the back buffer to the front buffer. If there's no back buffer
- * this is a no-op.
+/**
+ * Swap front and back color buffers and have winsys display front buffer.
+ * If there's no front color buffer no swap actually occurs.
*/
PUBLIC
void XMesaSwapBuffers( XMesaBuffer b )
{
- struct pipe_surface *surf;
+ struct pipe_surface *frontLeftSurf;
- /* If we're swapping the buffer associated with the current context
- * we have to flush any pending rendering commands first.
- */
- st_notify_swapbuffers(b->stfb);
+ st_swapbuffers(b->stfb, &frontLeftSurf, NULL);
- st_get_framebuffer_surface(b->stfb, ST_SURFACE_BACK_LEFT, &surf);
- if (surf) {
- driver.display_surface(b, surf);
+ if (frontLeftSurf) {
+ driver.display_surface(b, frontLeftSurf);
}
xmesa_check_and_update_buffer_size(NULL, b);