Chain together vertex shaders, like with fragment shaders.

[movit] / fs-header.glsl

diff --git a/fs-header.glsl b/fs-header.glsl
new file mode 100644 (file)
index 0000000..68d966b
--- /dev/null
+++ b/fs-header.glsl
@@ -0,0 +1,9 @@
+uniform sampler2D input_tex;
+varying vec2 tc;
+
+vec4 read_input(vec2 tc)
+{
+       return texture2D(input_tex, tc.st);
+}
+
+#define LAST_INPUT read_input