45 lines
1.7 KiB
HLSL
45 lines
1.7 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(16, 32, 1)]
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void main(uint3 xe_thread_id : SV_DispatchThreadID) {
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// 1 thread = 2 blocks.
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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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int block_offset_host =
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(XeTextureHostLinearOffset(int3(block_index) << int3(1, 1, 0),
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xe_texture_load_host_pitch,
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xe_texture_load_size_blocks.y << 1, 16u) +
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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 - 2);
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uint endian = XeTextureLoadEndian32();
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int i;
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[unroll] for (i = 0; i < 2; ++i) {
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if (i) {
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block_offset_host += 2;
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if (XeTextureLoadIsTiled()) {
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// Odd block start = even block end + 16 guest bytes when tiled.
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block_offset_guest += 1 << 2;
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}
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}
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// Top-left host texel.
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xe_texture_load_dest[block_offset_host] =
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XeEndianSwap32(xe_texture_load_source[block_offset_guest++], endian);
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// Top-right host texel.
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xe_texture_load_dest[block_offset_host + 1] =
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XeEndianSwap32(xe_texture_load_source[block_offset_guest++], endian);
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// Bottom-left host texel.
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xe_texture_load_dest[block_offset_host + elements_pitch_host] =
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XeEndianSwap32(xe_texture_load_source[block_offset_guest++], endian);
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// Bottom-right host texel.
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xe_texture_load_dest[block_offset_host + elements_pitch_host + 1] =
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XeEndianSwap32(xe_texture_load_source[block_offset_guest++], endian);
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}
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}
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