EXA: Support acceleration of solid pictures on R3xx-R7xx.

Allocate 1x1 scratch pixmaps to hold the solid picture colours.

This works around https://bugs.freedesktop.org/show_bug.cgi?id=47266 and might
improve performance in other cases as well.

Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>

1 files changed, 19 insertions, 0 deletions

diff --git a/src/radeon_exa_shared.c b/src/radeon_exa_shared.c
index be1d2faf..28dc3358 100644
--- a/src/radeon_exa_shared.c
+++ b/src/radeon_exa_shared.c
@@ -126,6 +126,25 @@ Bool RADEONCheckBPP(int bpp)
 	return FALSE;
 }
 
+PixmapPtr RADEONSolidPixmap(ScreenPtr pScreen, uint32_t solid)
+{
+    PixmapPtr pPix = pScreen->CreatePixmap(pScreen, 1, 1, 32, 0);
+    struct radeon_bo *bo;
+
+    exaMoveInPixmap(pPix);
+    bo = radeon_get_pixmap_bo(pPix);
+
+    if (radeon_bo_map(bo, 1)) {
+	pScreen->DestroyPixmap(pPix);
+	return NULL;
+    }
+
+    memcpy(bo->ptr, &solid, 4);
+    radeon_bo_unmap(bo);
+
+    return pPix;
+}
+
 static Bool radeon_vb_get(ScrnInfoPtr pScrn)
 {
     RADEONInfoPtr info = RADEONPTR(pScrn);