74 lines
3.6 KiB
HLSL
74 lines
3.6 KiB
HLSL
#include "pixel_formats.hlsli"
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#include "texture_load.hlsli"
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Buffer<uint4> xe_texture_load_source : register(t0);
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RWBuffer<uint4> xe_texture_load_dest : register(u0);
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[numthreads(16, 32, 1)]
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void main(uint3 xe_thread_id : SV_DispatchThreadID) {
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// 1 thread = 2 DXN blocks to 8x4 R8G8 texels.
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uint3 block_index = xe_thread_id << uint3(1, 0, 0);
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[branch] if (any(block_index >= xe_texture_load_size_blocks)) {
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return;
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}
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int3 texel_index_host = int3(block_index) << int3(2, 2, 0);
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int block_offset_host =
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(XeTextureHostLinearOffset(texel_index_host, xe_texture_load_host_pitch,
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xe_texture_load_height_texels, 2u) +
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xe_texture_load_host_offset) >> 4;
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int elements_pitch_host = xe_texture_load_host_pitch >> 4;
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int block_offset_guest =
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XeTextureLoadGuestBlockOffset(int3(block_index), 16u, 4u) >> 4;
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uint endian = XeTextureLoadEndian32();
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uint4 block_0 = XeEndianSwap32(xe_texture_load_source[block_offset_guest],
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endian);
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// Odd block = even block + 32 guest bytes when tiled.
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block_offset_guest += XeTextureLoadIsTiled() ? 2 : 1;
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uint4 block_1 = XeEndianSwap32(xe_texture_load_source[block_offset_guest],
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endian);
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uint4 end_0 = (block_0.xxzz >> uint4(0u, 8u, 0u, 8u)) & 0xFFu;
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uint4 end_1 = (block_1.xxzz >> uint4(0u, 8u, 0u, 8u)) & 0xFFu;
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uint4 weights = (uint4(block_0.xz, block_1.xz) >> 16u) |
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((uint4(block_0.yw, block_1.yw) & 0xFFu) << 16u);
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weights = 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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xe_texture_load_dest[block_offset_host] =
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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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[branch] if (++texel_index_host.y < int(xe_texture_load_height_texels)) {
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block_offset_host += elements_pitch_host;
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weights >>= 12u;
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xe_texture_load_dest[block_offset_host] =
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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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[branch] if (++texel_index_host.y < int(xe_texture_load_height_texels)) {
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block_offset_host += elements_pitch_host;
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weights = uint4(block_0.yw, block_1.yw) >> 8u;
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weights = 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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xe_texture_load_dest[block_offset_host] =
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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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[branch] if (++texel_index_host.y < int(xe_texture_load_height_texels)) {
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block_offset_host += elements_pitch_host;
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weights >>= 12u;
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xe_texture_load_dest[block_offset_host] =
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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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}
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