39 lines
1.6 KiB
HLSL
39 lines
1.6 KiB
HLSL
#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(4, 32, 1)]
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void main(uint3 xe_thread_id : SV_DispatchThreadID) {
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// 1 thread = 8 blocks.
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uint3 block_index = xe_thread_id << uint3(3, 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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int block_offset_host =
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(XeTextureHostLinearOffset(int3(block_index) << int3(1, 1, 0),
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xe_texture_load_size_blocks.y << 1,
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xe_texture_load_host_pitch, 4u) +
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xe_texture_load_host_base) >> 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), 4u, 2u) >> (4 - 2);
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uint endian = XeTextureLoadEndian32();
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int i;
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[unroll] for (i = 0; i < 8; i += 2) {
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if (i == 4 && XeTextureLoadIsTiled()) {
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// Odd 4 blocks start = even 4 blocks end + 16 guest bytes when tiled.
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block_offset_guest += 1 << 2;
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}
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// TTBB TTBB -> TTTT on the top row, BBBB on the bottom row.
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uint4 block_0 = XeEndianSwap32(xe_texture_load_source[block_offset_guest++],
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endian);
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uint4 block_1 = XeEndianSwap32(xe_texture_load_source[block_offset_guest++],
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endian);
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xe_texture_load_dest[block_offset_host] = uint4(block_0.xy, block_1.xy);
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xe_texture_load_dest[block_offset_host + elements_pitch_host] =
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uint4(block_0.zw, block_1.zw);
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++block_offset_host;
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}
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}
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