96 lines
4.5 KiB
Plaintext
96 lines
4.5 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_writeTypedStorageBuffer_declare(xesl_uint4, xe_texture_load_dest, set=0,
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binding=0, u0, space0)
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xesl_typedStorageBuffer_declare(xesl_uint4, xe_texture_load_source, set=1,
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binding=0, t0, space0)
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xesl_entry_bindings_begin_compute
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XE_TEXTURE_LOAD_CONSTANT_BUFFER_BINDING
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xesl_entry_binding_next
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xesl_writeTypedStorageBuffer_binding(xesl_uint4, xe_texture_load_dest,
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buffer(1))
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xesl_entry_binding_next
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xesl_typedStorageBuffer_binding(xesl_uint4, xe_texture_load_source, buffer(2))
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xesl_entry_bindings_end_inputs_begin_compute
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xesl_entry_input_globalInvocationID
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xesl_entry_inputs_end_code_begin_compute
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// 1 thread = 2 DXT5 blocks to 8x4 R8G8B8A8 texels.
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XeTextureLoadInfo load_info = XeTextureLoadGetInfo(
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xesl_function_call_constantBuffer(xe_texture_load_constants));
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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, load_info.size_blocks.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 block_offset_host = uint(
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(XeTextureHostLinearOffset(xesl_int3(texel_index_host),
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load_info.host_pitch, load_info.height_texels,
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4u) +
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load_info.host_offset) >> 4u);
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uint elements_pitch_host = load_info.host_pitch >> 4u;
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uint block_offset_guest =
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XeTextureLoadGuestBlockOffset(load_info, block_index, 16u, 4u) >> 4u;
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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 += load_info.is_tiled ? 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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load_info.endian_32);
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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_uint2 alpha_end = (block.xx >> xesl_uint2(0u, 8u)) & 0xFFu;
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uint alpha_weights = XeDXT5HighAlphaWeights(
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alpha_end, (block.x >> 16u) | ((block.y & 0xFFu) << 16u));
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xesl_typedStorageBufferStore(
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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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((xesl_uint_x4(XeDXT5RowToA8(alpha_end, alpha_weights)) <<
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xesl_uint4(24u, 16u, 8u, 0u))
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& 0xFF000000u));
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xesl_dont_flatten if (texel_index_host.y + 1u < load_info.height_texels) {
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xesl_typedStorageBufferStore(
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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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((xesl_uint_x4(XeDXT5RowToA8(alpha_end, alpha_weights >> 12u)) <<
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xesl_uint4(24u, 16u, 8u, 0u))
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& 0xFF000000u));
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xesl_dont_flatten if (texel_index_host.y + 2u < load_info.height_texels) {
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alpha_weights = XeDXT5HighAlphaWeights(alpha_end, block.y >> 8u);
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xesl_typedStorageBufferStore(
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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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((xesl_uint_x4(XeDXT5RowToA8(alpha_end, alpha_weights)) <<
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xesl_uint4(24u, 16u, 8u, 0u))
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& 0xFF000000u));
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xesl_dont_flatten
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if (texel_index_host.y + 3u < load_info.height_texels) {
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xesl_typedStorageBufferStore(
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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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((xesl_uint_x4(XeDXT5RowToA8(alpha_end, alpha_weights >> 12u)) <<
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xesl_uint4(24u, 16u, 8u, 0u))
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& 0xFF000000u));
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}
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}
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}
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}
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xesl_entry_code_end_compute
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