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bios/Sony/PlayStation Portable/shaders/checkers.fsh

@@ -0,0 +1,22 @@
+
+#ifdef GL_ES
+precision mediump float;
+precision mediump int;
+#endif
+
+uniform sampler2D sampler0;
+
+// The inverse of the texture dimensions along X and Y
+uniform vec2 u_texelDelta;
+varying vec2 v_texcoord0;
+
+void main() {
+  vec2 coord = v_texcoord0 / u_texelDelta;
+  int x = int(floor(coord.x));
+  int y = int(floor(coord.y));
+
+  int a = (x ^ y) & 1;
+
+  gl_FragColor.xyz = vec3(float(a));
+  gl_FragColor.a = 1.0;
+}