Improves GLB2.7 trex performance 1.01985% +/- 0.721366% on my IVB (n=10)
and by 3.38771% +/- 0.584241% (n=15) on my HSW, due to a 32x32 ARGB8888
cubemap going from untiled to tiled.
---
src/mesa/drivers/dri/intel/intel_mipmap_tree.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/src/mesa/drivers/dri/intel/intel_mipmap_tree.c
b/src/mesa/drivers/dri/intel/intel_mipmap_tree.c
index 98f1e98..12a4a22 100644
--- a/src/mesa/drivers/dri/intel/intel_mipmap_tree.c
+++ b/src/mesa/drivers/dri/intel/intel_mipmap_tree.c
@@ -345,11 +345,13 @@ intel_miptree_choose_tiling(struct intel_context *intel,
base_format == GL_DEPTH_STENCIL_EXT))
return I915_TILING_Y;
- /* If the width is smaller than a tile, don't bother tiling. */
- if (width0 < 64)
+ int minimum_pitch = mt->total_width * mt->cpp;
+
+ /* If the width is much smaller than a tile, don't bother tiling. */
+ if (minimum_pitch < 64)
return I915_TILING_NONE;
- if (ALIGN(mt->total_width * mt->cpp, 512) >= 32768) {
+ if (ALIGN(minimum_pitch, 512) >= 32768) {
perf_debug("%dx%d miptree too large to blit, falling back to untiled",
mt->total_width, mt->total_height);
return I915_TILING_NONE;
--
1.7.10.4
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