X-Git-Url: https://git.sesse.net/?p=movit;a=blobdiff_plain;f=vs.300es.vert;h=c3a0a2bbff9a8cabc3143b26f72880044bad7fc9;hp=542be891ffdfc420c05c9e2849d73c8008a9ce6f;hb=419bbfe5e46add3df115882dbf489ccfe080d2f9;hpb=06ba8d86c019208682d8883dc7187df37b027814

diff --git a/vs.300es.vert b/vs.300es.vert
index 542be89..c3a0a2b 100644
--- a/vs.300es.vert
+++ b/vs.300es.vert
@@ -6,6 +6,10 @@ in vec2 position;
 in vec2 texcoord;
 out vec2 tc;
 
+// Will be overridden by compile_glsl_program() if needed.
+// (It cannot just be prepended, as #version must be before everything.)
+#define FLIP_ORIGIN 0
+
 void main()
 {
 	// The result of glOrtho(0.0, 1.0, 0.0, 1.0, 0.0, 1.0) is:
@@ -16,4 +20,7 @@ void main()
 	//   0.000  0.000  0.000  1.000
 	gl_Position = vec4(2.0 * position.x - 1.0, 2.0 * position.y - 1.0, -1.0, 1.0);
 	tc = texcoord;
+#if FLIP_ORIGIN
+	tc.y = 1.0f - tc.y;
+#endif
 }