84 lines
2.6 KiB
Metal
84 lines
2.6 KiB
Metal
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// Automatically generated from files in pathfinder/shaders/. Do not edit!
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#pragma clang diagnostic ignored "-Wmissing-prototypes"
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#include <metal_stdlib>
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#include <simd/simd.h>
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using namespace metal;
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struct main0_out
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{
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float2 vFrom [[user(locn0)]];
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float2 vTo [[user(locn1)]];
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float4 gl_Position [[position]];
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};
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struct main0_in
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{
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uint2 aTessCoord [[attribute(0)]];
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uint4 aLineSegment [[attribute(1)]];
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int aTileIndex [[attribute(2)]];
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};
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static inline __attribute__((always_inline))
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float2 computeTileOffset(thread const uint& tileIndex, thread const float& stencilTextureWidth, thread const float2& tileSize)
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{
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uint tilesPerRow = uint(stencilTextureWidth / tileSize.x);
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uint2 tileOffset = uint2(tileIndex % tilesPerRow, tileIndex / tilesPerRow);
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return (float2(tileOffset) * tileSize) * float2(1.0, 0.25);
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}
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static inline __attribute__((always_inline))
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float4 computeVertexPosition(thread const uint& tileIndex, thread const uint2& tessCoord, thread const uint4& packedLineSegment, thread const float2& tileSize, thread const float2& framebufferSize, thread float2& outFrom, thread float2& outTo)
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{
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uint param = tileIndex;
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float param_1 = framebufferSize.x;
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float2 param_2 = tileSize;
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float2 tileOrigin = computeTileOffset(param, param_1, param_2);
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float4 lineSegment = float4(packedLineSegment) / float4(256.0);
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float2 from = lineSegment.xy;
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float2 to = lineSegment.zw;
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float2 position;
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if (tessCoord.x == 0u)
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{
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position.x = floor(fast::min(from.x, to.x));
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}
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else
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{
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position.x = ceil(fast::max(from.x, to.x));
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}
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if (tessCoord.y == 0u)
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{
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position.y = floor(fast::min(from.y, to.y));
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}
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else
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{
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position.y = tileSize.y;
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}
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position.y = floor(position.y * 0.25);
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float2 offset = float2(0.0, 1.5) - (position * float2(1.0, 4.0));
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outFrom = from + offset;
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outTo = to + offset;
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float2 globalPosition = (((tileOrigin + position) / framebufferSize) * 2.0) - float2(1.0);
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globalPosition.y = -globalPosition.y;
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return float4(globalPosition, 0.0, 1.0);
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}
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vertex main0_out main0(main0_in in [[stage_in]], constant float2& uTileSize [[buffer(0)]], constant float2& uFramebufferSize [[buffer(1)]])
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{
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main0_out out = {};
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uint param = uint(in.aTileIndex);
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uint2 param_1 = in.aTessCoord;
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uint4 param_2 = in.aLineSegment;
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float2 param_3 = uTileSize;
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float2 param_4 = uFramebufferSize;
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float2 param_5;
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float2 param_6;
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float4 _190 = computeVertexPosition(param, param_1, param_2, param_3, param_4, param_5, param_6);
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out.vFrom = param_5;
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out.vTo = param_6;
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out.gl_Position = _190;
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return out;
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}
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