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Desktop: Fix bitmap file export not preserving alpha (#3673)

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Fix Export not preserving alpha
This commit is contained in:
Timon
2026-01-26 14:51:48 +01:00
committed by GitHub
parent c07124332b
commit b4e9d7b9eb
4 changed files with 10 additions and 14 deletions
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6
node-graph/libraries/wgpu-executor/src/lib.rs
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@@ -112,12 +112,12 @@ unsafe impl StaticType for Surface {
const VELLO_SURFACE_FORMAT: wgpu::TextureFormat = wgpu::TextureFormat::Rgba8Unorm;
impl WgpuExecutor {
pub async fn render_vello_scene_to_texture(&self, scene: &Scene, size: UVec2, context: &RenderContext, background: Color) -> Result<wgpu::Texture> {
pub async fn render_vello_scene_to_texture(&self, scene: &Scene, size: UVec2, context: &RenderContext, background: Option<Color>) -> Result<wgpu::Texture> {
let mut output = None;
self.render_vello_scene_to_target_texture(scene, size, context, background, &mut output).await?;
Ok(output.unwrap().texture)
}
pub async fn render_vello_scene_to_target_texture(&self, scene: &Scene, size: UVec2, context: &RenderContext, background: Color, output: &mut Option<TargetTexture>) -> Result<()> {
pub async fn render_vello_scene_to_target_texture(&self, scene: &Scene, size: UVec2, context: &RenderContext, background: Option<Color>, output: &mut Option<TargetTexture>) -> Result<()> {
// Initialize (lazily) if this is the first call
if output.is_none() {
*output = Some(TargetTexture::new(&self.context.device, size));
@@ -126,7 +126,7 @@ impl WgpuExecutor {
if let Some(target_texture) = output.as_mut() {
target_texture.ensure_size(&self.context.device, size);
let [r, g, b, a] = background.to_rgba8_srgb();
let [r, g, b, a] = background.unwrap_or(Color::TRANSPARENT).to_rgba8_srgb();
let render_params = RenderParams {
base_color: vello::peniko::Color::from_rgba8(r, g, b, a),
width: size.x,