X-Git-Url: https://git.sesse.net/?p=movit;a=blobdiff_plain;f=vs.vert;h=dac2df9f5e8f1a009cb816eb56fd20b60effb02c;hp=1f4806951a39c843d5f0e474abce4c189efd3f3b;hb=8e9f58fec54a4c879035b214fd7411f6ff7b3a32;hpb=91c70600f2d0a6a42420ee98949cf182859b798f

diff --git a/vs.vert b/vs.vert
index 1f48069..dac2df9 100644
--- a/vs.vert
+++ b/vs.vert
@@ -1,7 +1,22 @@
+attribute vec2 position;
+attribute vec2 texcoord;
 varying 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()
 {
-	tc = gl_MultiTexCoord0.st;
-        gl_Position = ftransform();
+	// The result of glOrtho(0.0, 1.0, 0.0, 1.0, 0.0, 1.0) is:
+	//
+	//   2.000  0.000  0.000 -1.000
+	//   0.000  2.000  0.000 -1.000
+	//   0.000  0.000 -2.000 -1.000
+	//   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
 }