diff options
Diffstat (limited to 'src/gallium/drivers/nvfx/nvfx_screen.c')
| -rw-r--r-- | src/gallium/drivers/nvfx/nvfx_screen.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/src/gallium/drivers/nvfx/nvfx_screen.c b/src/gallium/drivers/nvfx/nvfx_screen.c index 6cbd8b23e1f..f7f39218944 100644 --- a/src/gallium/drivers/nvfx/nvfx_screen.c +++ b/src/gallium/drivers/nvfx/nvfx_screen.c @@ -293,6 +293,36 @@ static void nv40_screen_init(struct nvfx_screen *screen, struct nouveau_stateobj so_data (so, 0x00000001); } +static void +nvfx_screen_init_buffer_functions(struct nvfx_screen* screen) +{ + int vram_hack_default = 0; + int vram_hack; + // TODO: this is a bit of a guess; also add other cards that may need this hack. + // It may also depend on the specific card or the AGP/PCIe chipset. + if(screen->base.device->chipset == 0x47 /* G70 */ + || screen->base.device->chipset == 0x49 /* G71 */ + || screen->base.device->chipset == 0x46 /* G72 */ + ) + vram_hack_default = 1; + vram_hack = debug_get_bool_option("NOUVEAU_VTXIDX_IN_VRAM", vram_hack_default); + +#ifdef DEBUG + if(!vram_hack) + { + fprintf(stderr, "Some systems may experience graphics corruption due to randomly misplaced vertices.\n" + "If this is happening, export NOUVEAU_VTXIDX_IN_VRAM=1 may reduce or eliminate the problem\n"); + } + else + { + fprintf(stderr, "A performance reducing hack is being used to help avoid graphics corruption.\n" + "You can try export NOUVEAU_VTXIDX_IN_VRAM=0 to disable it.\n"); + } +#endif + + screen->vertex_buffer_flags = vram_hack ? NOUVEAU_BO_VRAM : NOUVEAU_BO_GART; +} + struct pipe_screen * nvfx_screen_create(struct pipe_winsys *ws, struct nouveau_device *dev) { @@ -350,6 +380,7 @@ nvfx_screen_create(struct pipe_winsys *ws, struct nouveau_device *dev) return NULL; } + nvfx_screen_init_buffer_functions(screen); nvfx_screen_init_miptree_functions(pscreen); ret = nouveau_grobj_alloc(chan, 0xbeef3097, eng3d_class, &screen->eng3d); |