15 lines
532 B
WebGPU Shading Language
15 lines
532 B
WebGPU Shading Language
@vertex
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fn vert_main(@location(0) a_particlePos : vec2<f32>,
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@location(1) a_particleVel : vec2<f32>,
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@location(2) a_pos : vec2<f32>) -> @builtin(position) vec4<f32> {
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let angle = -atan2(a_particleVel.x, a_particleVel.y);
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let pos = vec2<f32>(
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(a_pos.x * cos(angle)) - (a_pos.y * sin(angle)),
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(a_pos.x * sin(angle)) + (a_pos.y * cos(angle)));
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return vec4<f32>(pos + a_particlePos, 0.0, 1.0);
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}
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@fragment
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fn frag_main() -> @location(0) vec4<f32> {
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return vec4<f32>(1.0, 1.0, 1.0, 1.0);
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}
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