r300g: add debugging options "notiling" and "noimmd" (for testing)

notiling = Disable texture tiling
noimmd = Disable immediate mode (this optimization was really worth it!)

1 files changed, 6 insertions, 1 deletions

diff --git a/src/gallium/drivers/r300/r300_texture.c b/src/gallium/drivers/r300/r300_texture.c
index a37b33edf29..0c3502ff936 100644
--- a/src/gallium/drivers/r300/r300_texture.c
+++ b/src/gallium/drivers/r300/r300_texture.c
@@ -836,13 +836,14 @@ static void r300_setup_tiling(struct pipe_screen *screen,
     enum pipe_format format = tex->b.b.format;
     boolean rv350_mode = r300_screen(screen)->caps.family >= CHIP_FAMILY_RV350;
     boolean is_zb = util_format_is_depth_or_stencil(format);
+    boolean dbg_no_tiling = SCREEN_DBG_ON(r300_screen(screen), DBG_NO_TILING);
 
     if (!r300_format_is_plain(format)) {
         return;
     }
 
     /* If height == 1, disable microtiling except for zbuffer. */
-    if (!is_zb && tex->b.b.height0 == 1) {
+    if (!is_zb && (tex->b.b.height0 == 1 || dbg_no_tiling)) {
         return;
     }
 
@@ -861,6 +862,10 @@ static void r300_setup_tiling(struct pipe_screen *screen,
             break;
     }
 
+    if (dbg_no_tiling) {
+        return;
+    }
+
     /* Set macrotiling. */
     if (r300_texture_macro_switch(tex, 0, rv350_mode, TILE_WIDTH) &&
         r300_texture_macro_switch(tex, 0, rv350_mode, TILE_HEIGHT)) {