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examples/gkurve: moved vertex uniform data to vertex buffer and added view (#277)

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PiergiorgioZagaria 2022-05-15 19:34:09 +02:00 • committed by GitHub
parent 34e019a212
commit 2df0bc2786
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3 changed files with 42 additions and 32 deletions
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9
examples/gkurve/vert.wgsl
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@ -1,29 +1,28 @@
struct VertexUniform {
matrix: mat4x4<f32>,
}
@binding(0) @group(0) var<uniform> ubos: array<VertexUniform, 3>;
@binding(0) @group(0) var<uniform> ubo: VertexUniform;
struct VertexOut {
@builtin(position) position_clip: vec4<f32>,
@location(0) frag_uv: vec2<f32>,
@location(1) frag_bary: vec3<f32>,
@interpolate(flat) @location(2) instance_index: u32,
@interpolate(flat) @location(2) triangle_index: u32,
}
@stage(vertex) fn main(
@builtin(instance_index) instanceIdx: u32,
@builtin(vertex_index) vertex_index: u32,
@location(0) position: vec4<f32>,
@location(1) uv: vec2<f32>,
) -> VertexOut {
var output : VertexOut;
output.position_clip = ubos[instanceIdx].matrix * position;
output.position_clip = ubo.matrix * position;
output.frag_uv = uv;
output.frag_bary = vec3<f32>(
f32(vertex_index % 3u == 1u),
f32(vertex_index % 3u == 2u),
f32(vertex_index % 3u == 0u),
);
output.instance_index = instanceIdx;
output.triangle_index = vertex_index / 3u;
return output;
}