32 lines
1.5 KiB
HLSL
32 lines
1.5 KiB
HLSL
#include "edram_load_store.hlsli"
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#include "pixel_formats.hlsli"
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[numthreads(20, 16, 1)]
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void main(uint3 xe_group_id : SV_GroupID,
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uint3 xe_group_thread_id : SV_GroupThreadID,
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uint3 xe_thread_id : SV_DispatchThreadID) {
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uint2 tile_dword_index = xe_group_thread_id.xy;
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tile_dword_index.x *= 4u;
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uint edram_offset = XeEDRAMOffset(xe_group_id.xy, tile_dword_index);
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uint4 depth24_stencil = xe_edram_load_store_source.Load4(edram_offset);
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uint4 depth24 = depth24_stencil >> 8u;
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uint4 depth32 = xe_edram_load_store_source.Load4(10485760u + edram_offset);
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// Depth. If the stored 32-bit depth converted to 24-bit is the same as the
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// stored 24-bit depth, load the 32-bit value because it has more precision
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// (and multipass rendering is possible), if it's not, convert the 24-bit
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// depth because it was overwritten by aliasing.
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uint4 depth24to32 = XeFloat20e4To32(depth24);
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uint4 depth = depth24to32 + (depth32 - depth24to32) *
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uint4(XeFloat32To20e4(depth32) == depth24);
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uint rt_offset = xe_thread_id.y * xe_edram_rt_color_depth_pitch +
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xe_thread_id.x * 16u;
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xe_edram_load_store_dest.Store4(rt_offset, depth);
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// Stencil.
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uint4 stencil = (depth24_stencil & 0xFFu) << uint4(0u, 8u, 16u, 24u);
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stencil.xy |= stencil.zw;
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stencil.x |= stencil.y;
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rt_offset = xe_edram_rt_stencil_offset +
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xe_thread_id.y * xe_edram_rt_stencil_pitch + xe_thread_id.x * 4u;
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xe_edram_load_store_dest.Store(rt_offset, stencil.x);
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}
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