83 lines
3.7 KiB
Plaintext
83 lines
3.7 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(kXeTextureLoadGroupSizeX,
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kXeTextureLoadGroupSizeY, 1)
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xesl_input_global_invocation_id
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xesl_entry_signature_end
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// 1 thread = 2 DXT3 blocks to 8x4 R8G8B8A8 texels.
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xesl_uint3 block_index = xesl_GlobalInvocationID << xesl_uint3(1u, 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, 4u) +
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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, 16u, 4u) >> 4u;
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uint endian = XeTextureLoadEndian32();
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uint i;
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xesl_unroll for (i = 0u; i < 2u; ++i) {
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if (i != 0u) {
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++block_offset_host;
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// Odd block = even block + 32 guest bytes when tiled.
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block_offset_guest += XeTextureLoadIsTiled() ? 2u : 1u;
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}
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xesl_uint4 block = XeEndianSwap32(
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xesl_typedStorageBufferLoad(xe_texture_load_source, block_offset_guest),
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endian);
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xesl_uint2 bgr_end_8in10 = XeDXTColorEndpointsToBGR8In10(block.z);
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// Sort the color indices so they can be used as weights for the second
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// endpoint.
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uint bgr_weights = XeDXTHighColorWeights(block.w);
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xesl_writeTypedStorageBufferStore(
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xe_texture_load_dest, block_offset_host,
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XeDXTOpaqueRowToRGB8(bgr_end_8in10, bgr_weights) +
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((block.xxxx >> xesl_uint4(0u, 4u, 8u, 12u)) & 0xFu) * 0x11000000u);
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xesl_dont_flatten if (texel_index_host.y + 1u < height_texels) {
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xesl_writeTypedStorageBufferStore(
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xe_texture_load_dest, block_offset_host + elements_pitch_host,
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XeDXTOpaqueRowToRGB8(bgr_end_8in10, bgr_weights >> 8u) +
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((block.xxxx >> xesl_uint4(16u, 20u, 24u, 28u)) & 0xFu) *
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0x11000000u);
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xesl_dont_flatten if (texel_index_host.y + 2u < height_texels) {
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xesl_writeTypedStorageBufferStore(
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xe_texture_load_dest, block_offset_host + 2u * elements_pitch_host,
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XeDXTOpaqueRowToRGB8(bgr_end_8in10, bgr_weights >> 16u) +
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((block.yyyy >> xesl_uint4(0u, 4u, 8u, 12u)) & 0xFu) *
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0x11000000u);
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xesl_dont_flatten if (texel_index_host.y + 3u < height_texels) {
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xesl_writeTypedStorageBufferStore(
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xe_texture_load_dest,
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block_offset_host + 3u * elements_pitch_host,
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XeDXTOpaqueRowToRGB8(bgr_end_8in10, bgr_weights >> 24u) +
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((block.yyyy >> xesl_uint4(16u, 20u, 24u, 28u)) & 0xFu) *
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0x11000000u);
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}
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}
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}
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}
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xesl_entry_end
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