101 lines
5.2 KiB
Plaintext
101 lines
5.2 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 DXN blocks to 8x4 R8G8 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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2u) +
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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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xesl_uint4 block_0 = 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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// 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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xesl_uint4 block_1 = 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_uint4 end_0 = (block_0.xxzz >> xesl_uint4(0u, 8u, 0u, 8u)) & 0xFFu;
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xesl_uint4 end_1 = (block_1.xxzz >> xesl_uint4(0u, 8u, 0u, 8u)) & 0xFFu;
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xesl_uint4 weights = (xesl_uint4(block_0.xz, block_1.xz) >> 16u) |
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((xesl_uint4(block_0.yw, block_1.yw) & 0xFFu) << 16u);
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weights = xesl_uint4(XeDXT5HighAlphaWeights(end_0.xy, weights.x),
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XeDXT5HighAlphaWeights(end_0.zw, weights.y),
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XeDXT5HighAlphaWeights(end_1.xy, weights.z),
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XeDXT5HighAlphaWeights(end_1.zw, weights.w));
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xesl_typedStorageBufferStore(
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xe_texture_load_dest, block_offset_host,
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xesl_uint4(XeDXT5RowToA8In16(end_0.xy, weights.x) |
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(XeDXT5RowToA8In16(end_0.zw, weights.y) << 8u),
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XeDXT5RowToA8In16(end_1.xy, weights.z) |
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(XeDXT5RowToA8In16(end_1.zw, weights.w) << 8u)));
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xesl_dont_flatten if (++texel_index_host.y < load_info.height_texels) {
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block_offset_host += elements_pitch_host;
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weights >>= 12u;
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xesl_typedStorageBufferStore(
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xe_texture_load_dest, block_offset_host,
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xesl_uint4(XeDXT5RowToA8In16(end_0.xy, weights.x) |
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(XeDXT5RowToA8In16(end_0.zw, weights.y) << 8u),
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XeDXT5RowToA8In16(end_1.xy, weights.z) |
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(XeDXT5RowToA8In16(end_1.zw, weights.w) << 8u)));
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xesl_dont_flatten if (++texel_index_host.y < load_info.height_texels) {
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block_offset_host += elements_pitch_host;
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weights = xesl_uint4(block_0.yw, block_1.yw) >> 8u;
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weights = xesl_uint4(XeDXT5HighAlphaWeights(end_0.xy, weights.x),
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XeDXT5HighAlphaWeights(end_0.zw, weights.y),
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XeDXT5HighAlphaWeights(end_1.xy, weights.z),
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XeDXT5HighAlphaWeights(end_1.zw, weights.w));
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xesl_typedStorageBufferStore(
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xe_texture_load_dest, block_offset_host,
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xesl_uint4(XeDXT5RowToA8In16(end_0.xy, weights.x) |
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(XeDXT5RowToA8In16(end_0.zw, weights.y) << 8u),
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XeDXT5RowToA8In16(end_1.xy, weights.z) |
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(XeDXT5RowToA8In16(end_1.zw, weights.w) << 8u)));
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xesl_dont_flatten if (++texel_index_host.y < load_info.height_texels) {
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block_offset_host += elements_pitch_host;
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weights >>= 12u;
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xesl_typedStorageBufferStore(
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xe_texture_load_dest, block_offset_host,
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xesl_uint4(XeDXT5RowToA8In16(end_0.xy, weights.x) |
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(XeDXT5RowToA8In16(end_0.zw, weights.y) << 8u),
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XeDXT5RowToA8In16(end_1.xy, weights.z) |
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(XeDXT5RowToA8In16(end_1.zw, weights.w) << 8u)));
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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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