Initial commit

data/shaders/uv_selection_overlay.vertex

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+// __multiversion__
+// This signals the loading code to prepend either #version 100 or #version 300 es as apropriate.
+
+// To use centroid sampling we need to have version 300 es shaders, which requires changing:
+// attribute to in
+// varying to out when in vertex shaders or in when in fragment shaders
+// defining an out vec4 FragColor and replacing uses of gl_FragColor with FragColor
+// texture2D to texture
+#if __VERSION__ >= 300
+#define attribute in
+#define varying out
+
+#ifdef MSAA_FRAMEBUFFER_ENABLED
+#define _centroid centroid
+#else
+#define _centroid
+#endif
+
+_centroid out vec2 uv;
+
+#else
+
+varying vec2 uv;
+
+#endif
+
+uniform MAT4 WORLDVIEW;
+uniform MAT4 PROJ;
+
+attribute POS4 POSITION;
+attribute vec2 TEXCOORD_0;
+
+
+void main()
+{
+	POS4 pos = WORLDVIEW * POSITION;
+    gl_Position = PROJ * pos;
+
+    uv = TEXCOORD_0;
+}