98 lines
4.7 KiB
Plaintext
98 lines
4.7 KiB
Plaintext
/**
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******************************************************************************
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* Xenia : Xbox 360 Emulator Research Project *
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******************************************************************************
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* Copyright 2022 Ben Vanik. All rights reserved. *
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* Released under the BSD license - see LICENSE in the root for more details. *
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******************************************************************************
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*/
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#include "pixel_formats.xesli"
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#include "texture_load.xesli"
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xesl_entry
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xesl_writeTypedStorageBuffer(xesl_uint4, xe_texture_load_dest, set=0,
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binding=0, u0, space0)
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xesl_entry_binding_next
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xesl_typedStorageBuffer(xesl_uint4, xe_texture_load_source, set=1, binding=0,
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t0, space0)
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xesl_entry_bindings_end_local_size(8, 32, 1)
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xesl_input_global_invocation_id
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xesl_entry_signature_end
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// 1 thread = 4 DXT5A blocks to 16x4 R8 texels.
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xesl_uint3 block_index = xesl_GlobalInvocationID << xesl_uint3(2u, 0u, 0u);
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xesl_dont_flatten
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if (any(xesl_greaterThanEqual(block_index.xy,
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XeTextureLoadSizeBlocks().xy))) {
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return;
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}
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xesl_uint3 texel_index_host = block_index << xesl_uint3(2u, 2u, 0u);
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uint blocks_pitch_host = XeTextureLoadHostPitch();
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uint height_texels = XeTextureLoadHeightTexels();
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uint block_offset_host = uint(
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(XeTextureHostLinearOffset(xesl_int3(texel_index_host), blocks_pitch_host,
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height_texels, 1u) +
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XeTextureLoadHostOffset()) >> 4u);
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uint elements_pitch_host = blocks_pitch_host >> 4u;
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uint block_offset_guest =
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XeTextureLoadGuestBlockOffset(block_index, 8u, 3u) >> 4u;
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uint endian = XeTextureLoadEndian32();
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xesl_uint4 blocks_01 = XeEndianSwap32(
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xesl_typedStorageBufferLoad(xe_texture_load_source, block_offset_guest),
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endian);
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// Odd 2 blocks = even 2 blocks + 32 bytes when tiled.
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block_offset_guest += XeTextureLoadIsTiled() ? 2u : 1u;
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xesl_uint4 blocks_23 = XeEndianSwap32(
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xesl_typedStorageBufferLoad(xe_texture_load_source, block_offset_guest),
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endian);
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xesl_uint4 end_01 = (blocks_01.xxzz >> xesl_uint4(0u, 8u, 0u, 8u)) & 0xFFu;
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xesl_uint4 end_23 = (blocks_23.xxzz >> xesl_uint4(0u, 8u, 0u, 8u)) & 0xFFu;
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xesl_uint4 weights =
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(xesl_uint4(blocks_01.xz, blocks_23.xz) >> 16u) |
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((xesl_uint4(blocks_01.yw, blocks_23.yw) & 0xFFu) << 16u);
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weights = xesl_uint4(XeDXT5HighAlphaWeights(end_01.xy, weights.x),
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XeDXT5HighAlphaWeights(end_01.zw, weights.y),
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XeDXT5HighAlphaWeights(end_23.xy, weights.z),
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XeDXT5HighAlphaWeights(end_23.zw, weights.w));
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xesl_writeTypedStorageBufferStore(
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xe_texture_load_dest, block_offset_host,
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xesl_uint4(XeDXT5RowToA8(end_01.xy, weights.x),
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XeDXT5RowToA8(end_01.zw, weights.y),
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XeDXT5RowToA8(end_23.xy, weights.z),
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XeDXT5RowToA8(end_23.zw, weights.w)));
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xesl_dont_flatten if (++texel_index_host.y < height_texels) {
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block_offset_host += elements_pitch_host;
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weights >>= 12u;
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xesl_writeTypedStorageBufferStore(
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xe_texture_load_dest, block_offset_host,
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xesl_uint4(XeDXT5RowToA8(end_01.xy, weights.x),
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XeDXT5RowToA8(end_01.zw, weights.y),
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XeDXT5RowToA8(end_23.xy, weights.z),
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XeDXT5RowToA8(end_23.zw, weights.w)));
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xesl_dont_flatten if (++texel_index_host.y < height_texels) {
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block_offset_host += elements_pitch_host;
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weights = xesl_uint4(blocks_01.yw, blocks_23.yw) >> 8u;
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weights = xesl_uint4(XeDXT5HighAlphaWeights(end_01.xy, weights.x),
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XeDXT5HighAlphaWeights(end_01.zw, weights.y),
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XeDXT5HighAlphaWeights(end_23.xy, weights.z),
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XeDXT5HighAlphaWeights(end_23.zw, weights.w));
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xesl_writeTypedStorageBufferStore(
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xe_texture_load_dest, block_offset_host,
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xesl_uint4(XeDXT5RowToA8(end_01.xy, weights.x),
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XeDXT5RowToA8(end_01.zw, weights.y),
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XeDXT5RowToA8(end_23.xy, weights.z),
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XeDXT5RowToA8(end_23.zw, weights.w)));
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xesl_dont_flatten if (++texel_index_host.y < height_texels) {
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block_offset_host += elements_pitch_host;
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weights >>= 12u;
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xesl_writeTypedStorageBufferStore(
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xe_texture_load_dest, block_offset_host,
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xesl_uint4(XeDXT5RowToA8(end_01.xy, weights.x),
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XeDXT5RowToA8(end_01.zw, weights.y),
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XeDXT5RowToA8(end_23.xy, weights.z),
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XeDXT5RowToA8(end_23.zw, weights.w)));
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}
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}
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}
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xesl_entry_end
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