Index: src/mesa/drivers/dri/r128/r128_screen.c
===================================================================
RCS file: /cvs/mesa/Mesa/src/mesa/drivers/dri/r128/r128_screen.c,v
retrieving revision 1.25
diff -p -u -r1.25 r128_screen.c
--- src/mesa/drivers/dri/r128/r128_screen.c	27 Oct 2005 20:26:24 -0000	1.25
+++ src/mesa/drivers/dri/r128/r128_screen.c	21 Nov 2005 13:56:59 -0000
@@ -198,11 +196,19 @@ r128CreateScreen( __DRIscreenPrivate *sP
    r128Screen->depthPitch	= r128DRIPriv->depthPitch;
    r128Screen->spanOffset	= r128DRIPriv->spanOffset;
 
-   r128Screen->texOffset[R128_LOCAL_TEX_HEAP] = r128DRIPriv->textureOffset;
-   r128Screen->texSize[R128_LOCAL_TEX_HEAP] = r128DRIPriv->textureSize;
-   r128Screen->logTexGranularity[R128_LOCAL_TEX_HEAP] = r128DRIPriv->log2TexGran;
+   if ( r128DRIPriv->textureSize == 0 ) {
+      r128Screen->texOffset[R128_LOCAL_TEX_HEAP] =
+	 r128DRIPriv->agpTexOffset + R128_AGP_TEX_OFFSET;
+      r128Screen->texSize[R128_LOCAL_TEX_HEAP] = r128DRIPriv->agpTexMapSize;
+      r128Screen->logTexGranularity[R128_LOCAL_TEX_HEAP] =
+	 r128DRIPriv->log2AGPTexGran;
+   } else {
+      r128Screen->texOffset[R128_LOCAL_TEX_HEAP] = r128DRIPriv->textureOffset;
+      r128Screen->texSize[R128_LOCAL_TEX_HEAP] = r128DRIPriv->textureSize;
+      r128Screen->logTexGranularity[R128_LOCAL_TEX_HEAP] = r128DRIPriv->log2TexGran;
+   }
 
-   if ( r128Screen->IsPCI ) {
+   if ( !r128Screen->agpTextures.map || r128DRIPriv->textureSize == 0 ) {
       r128Screen->numTexHeaps = R128_NR_TEX_HEAPS - 1;
       r128Screen->texOffset[R128_AGP_TEX_HEAP] = 0;
       r128Screen->texSize[R128_AGP_TEX_HEAP] = 0;
Index: src/mesa/drivers/dri/radeon/radeon_screen.c
===================================================================
RCS file: /cvs/mesa/Mesa/src/mesa/drivers/dri/radeon/radeon_screen.c,v
retrieving revision 1.45
diff -p -u -r1.45 radeon_screen.c
--- src/mesa/drivers/dri/radeon/radeon_screen.c	2 Nov 2005 01:15:07 -0000	1.45
+++ src/mesa/drivers/dri/radeon/radeon_screen.c	21 Nov 2005 13:56:59 -0000
@@ -617,13 +632,20 @@ radeonCreateScreen( __DRIscreenPrivate *
    screen->depthHasSurface = ((sPriv->ddxMajor > 4) &&
       (screen->chip_flags & RADEON_CHIPSET_TCL));
 
-   screen->texOffset[RADEON_LOCAL_TEX_HEAP] = dri_priv->textureOffset
-				       + screen->fbLocation;
-   screen->texSize[RADEON_LOCAL_TEX_HEAP] = dri_priv->textureSize;
-   screen->logTexGranularity[RADEON_LOCAL_TEX_HEAP] =
-      dri_priv->log2TexGran;
+   if ( dri_priv->textureSize == 0 ) {
+      screen->texOffset[RADEON_LOCAL_TEX_HEAP] = screen->gart_texture_offset;
+      screen->texSize[RADEON_LOCAL_TEX_HEAP] = dri_priv->gartTexMapSize;
+      screen->logTexGranularity[RADEON_LOCAL_TEX_HEAP] =
+	 dri_priv->log2GARTTexGran;
+   } else {
+      screen->texOffset[RADEON_LOCAL_TEX_HEAP] = dri_priv->textureOffset
+				               + screen->fbLocation;
+      screen->texSize[RADEON_LOCAL_TEX_HEAP] = dri_priv->textureSize;
+      screen->logTexGranularity[RADEON_LOCAL_TEX_HEAP] =
+	 dri_priv->log2TexGran;
+   }
 
-   if ( !screen->gartTextures.map
+   if ( !screen->gartTextures.map || dri_priv->textureSize == 0
 	|| getenv( "RADEON_GARTTEXTURING_FORCE_DISABLE" ) ) {
       screen->numTexHeaps = RADEON_NR_TEX_HEAPS - 1;
       screen->texOffset[RADEON_GART_TEX_HEAP] = 0;