Refactor overlay

1 files changed, 22 insertions, 0 deletions

diff --git a/crates/shader/src/assets/shaders/throwshade/vert.glsl b/crates/shader/src/assets/shaders/throwshade/vert.glsl
new file mode 100644
index 0000000..e05bbb6
--- /dev/null
+++ b/crates/shader/src/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);
+}