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scale bounds by viewport, set scissor: fixes #21

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This commit is contained in:
jazzfool 2024-12-15 15:51:45 +11:00
parent d5e28bf017
commit f2aa4de527
2 changed files with 13 additions and 17 deletions
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10
src/pipeline.rs
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@ -346,15 +346,13 @@ impl VideoPipeline {
pass.set_pipeline(&self.pipeline);
pass.set_bind_group(0, &video.bg0, &[]);
pass.set_viewport(
pass.set_scissor_rect(
viewport.x as _,
viewport.y as _,
viewport.width as _,
viewport.height as _,
0.0,
1.0,
);
pass.draw(0..4, 0..1);
pass.draw(0..6, 0..1);
}
}
}
@ -394,7 +392,7 @@ impl Primitive for VideoPrimitive {
format: wgpu::TextureFormat,
storage: &mut iced_wgpu::primitive::Storage,
bounds: &iced::Rectangle,
_viewport: &iced_wgpu::graphics::Viewport,
viewport: &iced_wgpu::graphics::Viewport,
) {
if !storage.has::<VideoPipeline>() {
storage.store(VideoPipeline::new(device, format));
@ -413,7 +411,7 @@ impl Primitive for VideoPrimitive {
);
}
pipeline.prepare(queue, self.video_id, bounds);
pipeline.prepare(queue, self.video_id, &(*bounds * viewport.projection()));
}
fn render(

20
src/shader.wgsl
View file

@ -21,20 +21,18 @@ var<uniform> uniforms: Uniforms;
@vertex
fn vs_main(@builtin(vertex_index) in_vertex_index: u32) -> VertexOutput {
let quad = array<vec2<f32>, 6>(
uniforms.rect.xy,
uniforms.rect.zy,
uniforms.rect.xw,
uniforms.rect.zy,
uniforms.rect.zw,
uniforms.rect.xw,
var quad = array<vec4<f32>, 6>(
vec4<f32>(uniforms.rect.xy, 0.0, 0.0),
vec4<f32>(uniforms.rect.zy, 1.0, 0.0),
vec4<f32>(uniforms.rect.xw, 0.0, 1.0),
vec4<f32>(uniforms.rect.zy, 1.0, 0.0),
vec4<f32>(uniforms.rect.zw, 1.0, 1.0),
vec4<f32>(uniforms.rect.xw, 0.0, 1.0),
);
var out: VertexOutput;
out.uv = vec2<f32>(0.0);
out.uv.x = select(0.0, 2.0, in_vertex_index == 1u);
out.uv.y = select(0.0, 2.0, in_vertex_index == 2u);
out.position = vec4<f32>(out.uv * vec2<f32>(2.0, -2.0) + vec2<f32>(-1.0, 1.0), 1.0, 1.0);
out.uv = quad[in_vertex_index].zw;
out.position = vec4<f32>(quad[in_vertex_index].xy, 1.0, 1.0);
return out;
}