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RIP to Float16, it's sad that Intel doesn't support you.

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Alex Zenla
2024-09-01 19:27:39 -04:00
committed by a dinosaur
parent b1f2f645f6
commit 4209a925c4
8 changed files with 35 additions and 40 deletions
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10
Sources/Voxelotl/shader.metal
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@ -7,7 +7,7 @@ struct FragmentInput {
float3 world;
float3 normal;
float2 texCoord;
half4 color;
float4 color;
};
vertex FragmentInput vertexMain(
@ -29,7 +29,7 @@ vertex FragmentInput vertexMain(
return out;
}
fragment half4 fragmentMain(
fragment float4 fragmentMain(
FragmentInput in [[stage_in]],
metal::texture2d<half, metal::access::sample> texture [[texture(0)]],
constant FragmentShaderUniforms& u [[buffer(FragmentShaderInputIdxUniforms)]]
@ -45,17 +45,17 @@ fragment half4 fragmentMain(
// Compute diffuse component
float lambert = metal::dot(normal, lightVec);
float diffuseAmount = metal::max(0.0, lambert);
half4 diffuse = u.diffuseColor * diffuseAmount;
float4 diffuse = u.diffuseColor * diffuseAmount;
// Compute specular component (blinn-phong)
float specularAngle = metal::max(0.0, metal::dot(halfDir, normal));
float specularTerm = metal::pow(specularAngle, u.specularIntensity);
// smoothstep hack to ensure highlight tapers gracefully at grazing angles
float specularAmount = specularTerm * metal::smoothstep(0, 2, lambert * u.specularIntensity);
half4 specular = u.specularColor * specularAmount;
float4 specular = u.specularColor * specularAmount;
// Sample texture & vertex color to get albedo
half4 albedo = texture.sample(sampler, in.texCoord);
float4 albedo = float4(texture.sample(sampler, in.texCoord));
albedo *= in.color;
return albedo * (u.ambientColor + diffuse) + specular;