i915g: enable X-tiling for textures

Tiling is rather fragile in general and results in pure blackness when
unlucky.  Hence add a new option to disable tiling.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Jakob Bornecrantz <wallbraker@gmail.com>
Signed-off-by: Jakob Bornecrantz <wallbraker@gmail.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/gallium/drivers/i915/i915_debug.c b/src/gallium/drivers/i915/i915_debug.c
index 57d3390dea..d7150c99c4 100644
--- a/src/gallium/drivers/i915/i915_debug.c
+++ b/src/gallium/drivers/i915/i915_debug.c
@@ -46,10 +46,12 @@ static const struct debug_named_value debug_options[] = {
 };
 
 unsigned i915_debug = 0;
+boolean i915_tiling = TRUE;
 
 void i915_debug_init(struct i915_screen *screen)
 {
    i915_debug = debug_get_flags_option("I915_DEBUG", debug_options, 0);
+   i915_tiling = !debug_get_bool_option("I915_NO_TILING", FALSE);
 }