From 2702c90d7a39fca2a3319c5e915fd290cb31fc70 Mon Sep 17 00:00:00 2001
From: Radosław Kujawa <radoslaw.kujawa@c0ff33.net>
Date: Fri, 17 Jul 2026 14:54:32 +0200
Subject: Initial import.

---
 progs/util/idproj.c | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 progs/util/idproj.c

(limited to 'progs/util/idproj.c')

diff --git a/progs/util/idproj.c b/progs/util/idproj.c
new file mode 100644
index 0000000..d5ee340
--- /dev/null
+++ b/progs/util/idproj.c
@@ -0,0 +1,26 @@
+/* idproj.c */
+
+
+/*
+ * Setup an identity projection such that glVertex(x,y) maps to
+ * window coordinate (x,y).
+ *
+ * Written by Brian Paul and in the public domain.
+ */
+
+
+
+
+
+void IdentityProjection( GLint x, GLint y, GLsizei width, GLsizei height )
+{
+   glViewport( x, y, width, height );
+   glMatrixMode( GL_PROJECTION );
+   glLoadIdentity();
+   glOrtho( (GLdouble) x, (GLdouble) y,
+            (GLdouble) width, (GLdouble) height,
+            -1.0, 1.0 );
+   glMatrixMode( GL_MODELVIEW );
+   glLoadIdentity();
+}
+
-- 
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