From: Matthias Hopf <[email protected]>
---
src/radeon_driver.c | 15 +++++++++++++++
1 files changed, 15 insertions(+), 0 deletions(-)
diff --git a/src/radeon_driver.c b/src/radeon_driver.c
index 867e836..6b084b8 100644
--- a/src/radeon_driver.c
+++ b/src/radeon_driver.c
@@ -3262,6 +3262,21 @@ Bool RADEONPreInit(ScrnInfoPtr pScrn, int flags)
if (!RADEONPreInitControllers(pScrn))
goto fail;
+ /* Unless we're able to shrink/enlarge FB on the fly (GEM etc.), allocate
+ * large enough (TM) virtual size */
+ if (!pScrn->display->virtualX || !pScrn->display->virtualY) {
+ /* Have at least enough space for double buffering and z Buffer + some
textures */
+ if (2 * 1920*1920 * (pScrn->bitsPerPixel/8) <= pScrn->videoRam / 4 *
1024) {
+ /* Fits on 128MB and up */
+ pScrn->display->virtualX = 2 * 1920;
+ pScrn->display->virtualY = 1920;
+ } else if (2 * 1680*1280 * (pScrn->bitsPerPixel/8) <= pScrn->videoRam /
4 * 1024) {
+ /* Fits on 64MB and up */
+ pScrn->display->virtualX = 2 * 1680;
+ pScrn->display->virtualY = 1280;
+ }
+ }
+
if (!xf86InitialConfiguration (pScrn, FALSE))
{
xf86DrvMsg(pScrn->scrnIndex, X_ERROR, "No valid modes.\n");
--
1.7.7
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