27 lines
1.1 KiB
Diff
27 lines
1.1 KiB
Diff
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Index: xf86-video-ati-6.13.0/src/radeon_driver.c
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===================================================================
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--- xf86-video-ati-6.13.0.orig/src/radeon_driver.c
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+++ xf86-video-ati-6.13.0/src/radeon_driver.c
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@@ -3221,6 +3221,21 @@ Bool RADEONPreInit(ScrnInfoPtr pScrn, in
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if (!RADEONPreInitControllers(pScrn))
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goto fail;
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+ /* Unless we're able to shrink/enlarge FB on the fly (GEM etc.), allocate
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+ * large enough (TM) virtual size */
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+ if (!pScrn->display->virtualX || !pScrn->display->virtualY) {
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+ /* Have at least enough space for double buffering and z Buffer + some textures */
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+ if (2 * 1920*1920 * (pScrn->bitsPerPixel/8) <= pScrn->videoRam / 4 * 1024) {
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+ /* Fits on 128MB and up */
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+ pScrn->display->virtualX = 2 * 1920;
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+ pScrn->display->virtualY = 1920;
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+ } else if (2 * 1680*1280 * (pScrn->bitsPerPixel/8) <= pScrn->videoRam / 4 * 1024) {
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+ /* Fits on 64MB and up */
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+ pScrn->display->virtualX = 2 * 1680;
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+ pScrn->display->virtualY = 1280;
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+ }
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+ }
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+
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if (!xf86InitialConfiguration (pScrn, FALSE))
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{
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xf86DrvMsg(pScrn->scrnIndex, X_ERROR, "No valid modes.\n");
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