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Implement image support for canvas widget

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Héctor Ramón Jiménez 2024-08-04 03:28:43 +02:00
parent 87a613edd1
commit 0ceee1cf3a
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GPG key ID: 7CC46565708259A7
16 changed files with 485 additions and 29 deletions
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12
wgpu/src/shader/image.wgsl
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@ -1,5 +1,6 @@
struct Globals {
transform: mat4x4<f32>,
scale_factor: f32,
}
@group(0) @binding(0) var<uniform> globals: Globals;
@ -16,6 +17,7 @@ struct VertexInput {
@location(5) atlas_pos: vec2<f32>,
@location(6) atlas_scale: vec2<f32>,
@location(7) layer: i32,
@location(8) snap: u32,
}
struct VertexOutput {
@ -38,7 +40,7 @@ fn vs_main(input: VertexInput) -> VertexOutput {
out.opacity = input.opacity;
// Calculate the vertex position and move the center to the origin
v_pos = round(input.pos) + v_pos * input.scale - input.center;
v_pos = input.pos + v_pos * input.scale - input.center;
// Apply the rotation around the center of the image
let cos_rot = cos(input.rotation);
@ -51,7 +53,13 @@ fn vs_main(input: VertexInput) -> VertexOutput {
);
// Calculate the final position of the vertex
out.position = globals.transform * (vec4<f32>(input.center, 0.0, 0.0) + rotate * vec4<f32>(v_pos, 0.0, 1.0));
out.position = vec4(vec2(globals.scale_factor), 1.0, 1.0) * (vec4<f32>(input.center, 0.0, 0.0) + rotate * vec4<f32>(v_pos, 0.0, 1.0));
if bool(input.snap) {
out.position = round(out.position);
}
out.position = globals.transform * out.position;
return out;
}