40 lines
964 B
Metal
40 lines
964 B
Metal
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#include <metal_stdlib>
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using namespace metal;
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#include "VertexConstants.h"
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constexpr sampler alphaTextureSampler(mag_filter::linear, min_filter::linear);
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struct FontVertex
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{
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float3 vPos [[attribute(0)]];
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float2 vTex [[attribute(1)]];
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uchar4 vCol [[attribute(2)]];
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};
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struct FontOut
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{
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float4 oPosition [[position]];
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float2 oTex;
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float4 oColor;
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};
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vertex FontOut FontVertexShader(FontVertex vert [[stage_in]], constant VertexShaderConstantBuffer *constants [[buffer(2)]])
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{
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FontOut out;
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out.oPosition = constants->Projection * constants->View * float4(vert.vPos, 1.0);
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out.oTex = vert.vTex;
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out.oColor = float4(vert.vCol) / 255.0;
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return out;
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}
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fragment float4 FontPixelShader(FontOut in [[stage_in]], texture2d<float> alphaTexture [[texture(0)]])
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{
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const float4 sample = alphaTexture.sample(alphaTextureSampler, in.oTex);
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if (sample.x < 0.5)
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discard_fragment();
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return float4(in.oColor.xyz, sample.x);
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}
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