X-Git-Url: https://git.ucc.asn.au/?p=ipdf%2Fcode.git;a=blobdiff_plain;f=src%2Fshaders%2Fbasictex_vert.glsl;fp=src%2Fshaders%2Fbasictex_vert.glsl;h=1b658644ef5fbb55946a5522eba1c1de54359da0;hp=0000000000000000000000000000000000000000;hb=433bde2ed090928b264203c9f422a5b220857120;hpb=57c3c69cbc7d9b3724874fd83cd001984ac21b6a

diff --git a/src/shaders/basictex_vert.glsl b/src/shaders/basictex_vert.glsl
new file mode 100644
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;
+}
+