1 files changed, 17 insertions, 0 deletions
diff --git a/shaders/rounded_rectangle_mask.glsl b/shaders/rounded_rectangle_mask.glsl
new file mode 100644
index 0000000..4725273
--- /dev/null
+++ b/shaders/rounded_rectangle_mask.glsl
@@ -0,0 +1,17 @@
+uniform sampler2D texture;
+uniform float radius;
+uniform vec2 resolution;
+
+float rounded_rect(vec2 coord, vec2 size, float r) {
+	return length(max(abs(coord) - size, 0.0)) - r;
+}
+
+void main() {
+    vec2 uv = gl_TexCoord[0].xy * resolution;
+    vec2 center = resolution * 0.5;
+    vec2 size = resolution * 0.5;
+    vec4 background_color = vec4(0.0, 0.0, 0.0, 0.0);
+    vec4 texture_color = texture2D(texture, gl_TexCoord[0].xy);
+	float a = clamp(rounded_rect(uv - center, size - radius, radius), 0.0, 1.0);
+    gl_FragColor = mix(texture_color, background_color, a);
+}
+\ No newline at end of file