Fix black borders around alpha cutoff textures

crates/renderer/src/renderer.rs

@@ -230,7 +230,19 @@ impl Renderer {
  "forward",
  TreeRendererConfig {
  renderer_config: config.clone(),
- targets: vec![Some(gpu.swapchain_format().into()), Some(normals_format)],
+ targets: vec![
+ Some(wgpu::ColorTargetState {
+ format: gpu.swapchain_format(),
+ blend: None,
+ // NOTE: We had problems where the solid renderer would output alpha values like
+ // 0.8, because it was using alpha cutoff, and then just outputing the alpha value
+ // of the texture. This lead to black borders around the edges of the texture when
+ // it was blended with the background. A better solution _might_ be to update the
+ // shaders to output either 1 or 0 for alpha when it's the solids pass.
+ write_mask: wgpu::ColorWrites::COLOR,
+ }),
+ Some(normals_format),
+ ],
  filter: ArchetypeFilter::new().incl(config.scene),
  renderer_resources: renderer_resources.clone(),
  fs_main: FSMain::Forward,