nv50: add 3d texture tiling and mip-mapping

Mip-mapped 3D textures are not arrays of 2D layers
with a mip-map layout like 2D textures, therefore we
cannot use image_nr == depth for them.

Making use of "volume tiling" modes now, the allowed
modes are 0xZY where Z <= 5 and y <= 5.

1 files changed, 12 insertions, 0 deletions

diff --git a/src/gallium/drivers/nv50/nv50_context.h b/src/gallium/drivers/nv50/nv50_context.h
index 890defb90c..4b0f062295 100644
--- a/src/gallium/drivers/nv50/nv50_context.h
+++ b/src/gallium/drivers/nv50/nv50_context.h
@@ -69,6 +69,18 @@ struct nv50_sampler_stateobj {
 	unsigned tsc[8];
 };
 
+static INLINE unsigned
+get_tile_height(uint32_t tile_mode)
+{
+        return 1 << ((tile_mode & 0xf) + 2);
+}
+
+static INLINE unsigned
+get_tile_depth(uint32_t tile_mode)
+{
+        return 1 << (tile_mode >> 4);
+}
+
 struct nv50_miptree_level {
 	int *image_offset;
 	unsigned pitch;