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struct VertexInput {
@location(0) position: vec3<f32>,
@location(1) normal: vec3<f32>,
@location(2) uv: vec2<f32>,
@location(3) block: vec3<f32>,
@location(4) material: f32,
};
struct VertexOutput {
@builtin(position) position: vec4<f32>,
@location(0) tint: vec3<f32>,
@location(1) uv: vec2<f32>,
@location(2) visibility: f32,
@location(3) material: f32,
};
struct Uniforms {
proj: mat4x4<f32>,
view: mat4x4<f32>,
skyColor: vec3<f32>,
cameraPos: vec3<f32>,
raycast: vec3<f32>,
renderDistance: f32,
};
@group(0) @binding(0) var<uniform> uniforms: Uniforms;
@group(1) @binding(0) var<uniform> tran: mat4x4<f32>;
@vertex
fn vs_main(input: VertexInput) -> VertexOutput {
var output: VertexOutput;
var worldPosition = tran * vec4<f32>(input.position, 1.0);
output.position = uniforms.proj * uniforms.view * worldPosition;
output.tint = vec3(dot(abs(input.normal), vec3(0.8, 0.9, 0.75)));
output.uv = input.uv;
output.material = input.material;
var dist = distance(uniforms.cameraPos.xz, worldPosition.xz);
var visibility = 1.0;
var fogDepth = 16.0;
if (dist / fogDepth > uniforms.renderDistance - 2) {
visibility = 1 - (dist - (fogDepth * (uniforms.renderDistance - 2))) / fogDepth;
}
output.visibility = clamp(visibility, 0.0, 1.0);
if (all(uniforms.raycast == input.block)) {
output.tint = vec3(1.2);
}
return output;
}
@group(0) @binding(1) var texSampler: sampler;
@group(0) @binding(2) var texture: texture_2d_array<f32>;
@fragment
fn fs_main(input: VertexOutput) -> @location(0) vec4<f32> {
var color = vec4(input.tint, 1.0) * textureSample(texture, texSampler, input.uv, i32(input.material));
var skyColor = vec4(uniforms.skyColor, 1.0);
return mix(skyColor, color, input.visibility);
}
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