Add alpha parameter to shaders

Lets us add extra opacity.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/render_helpers/shader_element.rs b/src/render_helpers/shader_element.rs
index 2ec100ba..be3ccec6 100644
--- a/src/render_helpers/shader_element.rs
+++ b/src/render_helpers/shader_element.rs
@@ -227,12 +227,14 @@ impl ShaderRenderElement {
         size: Size<f64, Logical>,
         opaque_regions: Option<Vec<Rectangle<f64, Logical>>>,
         scale: f32,
+        alpha: f32,
         uniforms: Vec<Uniform<'static>>,
         textures: HashMap<String, GlesTexture>,
     ) {
         self.area.size = size;
         self.opaque_regions = opaque_regions.unwrap_or_default();
         self.scale = scale;
+        self.alpha = alpha;
         self.additional_uniforms = uniforms;
         self.textures = textures;