First pass at tear-free accel

if the dest pixmap is the front buffer, stall the pipe
until the vline is outside the active area.
For EXA, pick crtc based on the larger mode area;
ideally we'd have one pixmap per crtc.
For Xv, use dst window area to determine crtc.

1 files changed, 6 insertions, 0 deletions

diff --git a/src/radeon_exa_render.c b/src/radeon_exa_render.c
index a74abb63..895958cc 100644
--- a/src/radeon_exa_render.c
+++ b/src/radeon_exa_render.c
@@ -624,6 +624,8 @@ static Bool FUNC_NAME(R100PrepareComposite)(int op,
     OUT_ACCEL_REG(RADEON_RB3D_BLENDCNTL, blendcntl);
     FINISH_ACCEL();
 
+    FUNC_NAME(RADEONWaitForVLine)(pScrn, pDst, RADEONBiggerCrtcArea(pDst));
+
     return TRUE;
 }
 
@@ -930,6 +932,8 @@ static Bool FUNC_NAME(R200PrepareComposite)(int op, PicturePtr pSrcPicture,
     OUT_ACCEL_REG(RADEON_RB3D_BLENDCNTL, blendcntl);
     FINISH_ACCEL();
 
+    FUNC_NAME(RADEONWaitForVLine)(pScrn, pDst, RADEONBiggerCrtcArea(pDst));
+
     return TRUE;
 }
 
@@ -1877,6 +1881,8 @@ static Bool FUNC_NAME(R300PrepareComposite)(int op, PicturePtr pSrcPicture,
 	OUT_ACCEL_REG(R300_VAP_VTX_SIZE, 4);
     FINISH_ACCEL();
 
+    FUNC_NAME(RADEONWaitForVLine)(pScrn, pDst, RADEONBiggerCrtcArea(pDst));
+
     return TRUE;
 }