From 3d51c7900105a99fc30a4318080fd4cc373c8eec Mon Sep 17 00:00:00 2001 From: Roland Scheidegger Date: Thu, 22 Nov 2007 02:49:11 +0100 Subject: [PATCH] fix z buffer read/write issue with rv100-like chips and old ddx --- src/mesa/drivers/dri/radeon/radeon_screen.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/src/mesa/drivers/dri/radeon/radeon_screen.c b/src/mesa/drivers/dri/radeon/radeon_screen.c index c12eef20242..e9c9df12229 100644 --- a/src/mesa/drivers/dri/radeon/radeon_screen.c +++ b/src/mesa/drivers/dri/radeon/radeon_screen.c @@ -720,7 +720,11 @@ radeonCreateScreen( __DRIscreenPrivate *sPriv ) screen->depthPitch = dri_priv->depthPitch; /* Check if ddx has set up a surface reg to cover depth buffer */ - screen->depthHasSurface = (sPriv->ddx_version.major > 4); + screen->depthHasSurface = (sPriv->ddx_version.major > 4) || + /* these chips don't use tiled z without hyperz. So always pretend + we have set up a surface which will cause linear reads/writes */ + ((screen->chip_family & RADEON_CLASS_R100) && + !(screen->chip_flags & RADEON_CHIPSET_TCL)); if ( dri_priv->textureSize == 0 ) { screen->texOffset[RADEON_LOCAL_TEX_HEAP] = screen->gart_texture_offset; -- 2.30.2