a

1 files changed, 17 insertions, 0 deletions

diff --git a/assets/shaders/2d_overlay.fsh b/assets/shaders/2d_overlay.fsh
new file mode 100644
index 0000000..052f0bd
--- /dev/null
+++ b/assets/shaders/2d_overlay.fsh
@@ -0,0 +1,17 @@
+precision mediump float;
+varying vec2 in_texcoord;
+varying vec2 in_texcoord2;
+varying vec4 g_color;
+uniform sampler2D in_sampler;
+uniform sampler2D in_sampler2;
+
+void main() {
+  vec4 color = texture2D( in_sampler, in_texcoord );
+  vec4 color2 = texture2D( in_sampler2, in_texcoord2 );
+  
+  float brightness = (color.x + color.y + color.z) / 3.0;
+  vec3 blend = color2.xyz * brightness;
+  vec4 final = vec4( color2.xyz, color.a );
+  
+  gl_FragColor = vec4( in_texcoord.x, fTexCoord.y, 0.0, 1.0 );
+}