Move everything into a separate futatabi/ subdir, for the upcoming merge with Nageru.

[nageru] / futatabi / hole_fill.vert

diff --git a/futatabi/hole_fill.vert b/futatabi/hole_fill.vert
new file mode 100644 (file)
index 0000000..97098b6
--- /dev/null
+++ b/futatabi/hole_fill.vert
@@ -0,0 +1,24 @@
+#version 450 core
+
+layout(location=0) in vec2 position;
+out vec2 tc;
+
+uniform float z;
+uniform vec2 sample_offset;
+
+void main()
+{
+       // Moving the position is equivalent to moving the texture coordinate,
+       // but cheaper -- as it means some of the fullscreen quad can be clipped away.
+       vec2 adjusted_pos = position - sample_offset;
+
+       // 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 * adjusted_pos.x - 1.0, 2.0 * adjusted_pos.y - 1.0, 2.0f * (z - 0.5f), 1.0);
+
+       tc = position;
+}