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Use array in shader

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This commit is contained in:
Maximilian Ammann 2021-12-30 11:28:13 +01:00
parent 184f37df44
commit f78708adc2
1 changed files with 10 additions and 24 deletions
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34
src/render/shaders/tile_mask.vertex.wgsl
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@ -17,6 +17,15 @@ struct VertexOutput {
let EXTENT = 4096.0;
var<private> VERTICES: array<vec2<f32>, 6> = array<vec2<f32>, 6>(
vec2<f32>(0.0, 0.0),
vec2<f32>(0.0, EXTENT),
vec2<f32>(EXTENT, 0.0),
vec2<f32>(EXTENT, 0.0),
vec2<f32>(0.0, EXTENT),
vec2<f32>(EXTENT, EXTENT)
);
[[stage(vertex)]]
fn main(
[[location(4)]] mask_offset: vec2<f32>,
@ -26,30 +35,7 @@ fn main(
[[builtin(vertex_index)]] vertex_idx: u32,
[[builtin(instance_index)]] instance_idx: u32 // instance_index is used when we have multiple instances of the same "object"
) -> VertexOutput {
var a_position: vec2<f32>;
// Encode a square within the shader
switch (vertex_idx) {
case 0: {
a_position = vec2<f32>(0.0, 0.0);
}
case 1: {
a_position = vec2<f32>(0.0, EXTENT);
}
case 2: {
a_position = vec2<f32>(EXTENT, 0.0);
}
case 3: {
a_position = vec2<f32>(EXTENT, 0.0);
}
case 4: {
a_position = vec2<f32>(0.0, EXTENT);
}
case 5: {
a_position = vec2<f32>(EXTENT, EXTENT);
}
default: { }
}
let a_position = VERTICES[vertex_idx];
let scaling: mat3x3<f32> = mat3x3<f32>(
vec3<f32>(target_width, 0.0, 0.0),