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-rw-r--r--src/mesa/drivers/dri/radeon/radeon_screen.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/src/mesa/drivers/dri/radeon/radeon_screen.c b/src/mesa/drivers/dri/radeon/radeon_screen.c
index c12eef2024..e9c9df1222 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;