kas-wgpu 0.17.1

KAS GUI / wgpu front-end
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// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License in the LICENSE-APACHE file or at:
//     https://www.apache.org/licenses/LICENSE-2.0

#version 450
#extension GL_ARB_separate_shader_objects : enable

precision mediump float;

layout(location = 0) in vec4 fragColor;
layout(location = 1) in vec2 norm2;

layout(location = 0) out vec4 outColor;

layout(set = 0, binding = 1) uniform FragCommon {
    vec3 lightNorm;
    // Note: since WGPU v0.12 this type is interpreted as 16 bytes.
    // For compatibility, we explicitly pad to 16 bytes.
    float _padding;
};

void main() {
    float n3 = sqrt(1.0 - norm2.x * norm2.x - norm2.y * norm2.y);
    vec3 norm = vec3(norm2, n3);
    // HACK: hard code the light norm since the value received above is clearly wrong
    vec3 lightNorm = vec3(0.1204612, -0.28491753, 1.0);
    vec3 c = fragColor.rgb * dot(norm, lightNorm);
    outColor = vec4(c, fragColor.a);
}