GLSL Shaders -> Files (instead of #define)

[ipdf/code.git] / src / shaders / basictex_vert.glsl

diff --git a/src/shaders/basictex_vert.glsl b/src/shaders/basictex_vert.glsl
new file mode 100644 (file)
index 0000000..1b65864
--- /dev/null
+++ b/src/shaders/basictex_vert.glsl
@@ -0,0 +1,25 @@
+#version 140
+#extension GL_ARB_shading_language_420pack : require
+#extension GL_ARB_explicit_attrib_location : require
+
+layout(std140, binding=0) uniform Viewport
+{
+       float width;
+       float height;
+};
+
+layout(location = 0) in vec2 position;
+layout(location = 1) in vec2 tex_coord;
+
+out vec2 fp_tex_coord;
+
+void main()
+{
+       // Transform to clip coordinates (-1,1, -1,1).
+       gl_Position.x = (position.x*2/width) - 1;
+       gl_Position.y = 1 - (position.y*2/height);
+       gl_Position.z = 0.0;
+       gl_Position.w = 1.0;
+       fp_tex_coord = tex_coord;
+}
+