3 files changed, 58 insertions, 0 deletions
diff --git a/src/common/overlay/assets/shaders/throwshade/frag.glsl b/src/common/overlay/assets/shaders/throwshade/frag.glsl
new file mode 100644
index 0000000..36f1023
--- /dev/null
+++ b/src/common/overlay/assets/shaders/throwshade/frag.glsl
@@ -0,0 +1,13 @@
+#version 300 es
+precision highp float;
+
+in vec2 vertex_texcoord;
+out vec4 frag_color;
+
+vec4 shade(vec2);
+
+void main() {
+    frag_color = shade(vertex_texcoord);
+} 
+
+// "The Cutoff"
diff --git a/src/common/overlay/assets/shaders/throwshade/vert.glsl b/src/common/overlay/assets/shaders/throwshade/vert.glsl
new file mode 100644
index 0000000..e05bbb6
--- /dev/null
+++ b/src/common/overlay/assets/shaders/throwshade/vert.glsl
@@ -0,0 +1,22 @@
+#version 300 es
+precision highp float;
+
+out vec2 vertex_texcoord;
+
+void main() {
+    const vec2 positions[4] = vec2[](
+        vec2(-1, -1),
+        vec2(+1, -1),
+        vec2(-1, +1),
+        vec2(+1, +1)
+    );
+    const vec2 coords[4] = vec2[](
+        vec2(0, 0),
+        vec2(1, 0),
+        vec2(0, 1),
+        vec2(1, 1)
+    );
+
+    vertex_texcoord = coords[gl_VertexID];
+    gl_Position = vec4(positions[gl_VertexID], 0.0, 1.0);
+}
diff --git a/src/common/overlay/throwshade.rs b/src/common/overlay/throwshade.rs
new file mode 100644
index 0000000..d7ac430
--- /dev/null
+++ b/src/common/overlay/throwshade.rs
@@ -0,0 +1,23 @@
+use teleia::*;
+
+const VERT: &'static str = include_str!("assets/shaders/throwshade/vert.glsl");
+const FRAG: &'static str = include_str!("assets/shaders/throwshade/frag.glsl");
+
+pub struct ThrowShade {
+    pub shader: Option<shader::Shader>,
+}
+impl ThrowShade {
+    pub fn new() -> Self {
+        Self {
+            shader: None,
+        }
+    }
+    pub fn set(&mut self, ctx: &context::Context, src: &str) {
+        let fsrc = format!("{}\n{}\n", FRAG, src);
+        if let Some(s) = &mut self.shader {
+            s.replace(ctx, VERT, &fsrc);
+        } else {
+            self.shader = Some(shader::Shader::new_nolib(ctx, VERT, &fsrc));
+        }
+    }
+}