[D3D12] 32bpp tiling shader

src/xenia/gpu/d3d12/shaders/texture_tile.hlsli

@@ -0,0 +1,26 @@
+#ifndef XENIA_GPU_D3D12_SHADERS_TEXTURE_TILE_HLSLI_
+#define XENIA_GPU_D3D12_SHADERS_TEXTURE_TILE_HLSLI_
+
+#include "byte_swap.hlsli"
+#include "texture_address.hlsli"
+
+cbuffer XeTextureTileConstants : register(b0) {
+  // Either from the start of the shared memory or from the start of the typed
+  // UAV, in bytes.
+  uint xe_texture_tile_guest_base;
+  // 0:2 - endianness (up to Xin128).
+  // 3:31 - actual guest texture width.
+  uint xe_texture_tile_endian_guest_pitch;
+  // Size to copy, texels with index bigger than this won't be written.
+  // Width in the lower 16 bits, height in the upper.
+  uint xe_texture_tile_size;
+  // Byte offset to the first texel from the beginning of the source buffer.
+  uint xe_texture_tile_host_base;
+  // Row pitch of the source buffer.
+  uint xe_texture_tile_host_pitch;
+}
+
+ByteAddressBuffer xe_texture_tile_source : register(t0);
+// The target is u0, may be a raw UAV or a typed UAV depending on the format.
+
+#endif  // XENIA_GPU_D3D12_SHADERS_TEXTURE_TILE_HLSLI_