demos: fix aspect ratio in Reshape()

diff --git a/progs/glsl/bump.c b/progs/glsl/bump.c
index b93ab44b5b9000bb91b60a33771ea80ac9ff9438..0ea1f8331ff3cbcc82e1529f041b5b27a22981f5 100644 (file)
--- a/progs/glsl/bump.c
+++ b/progs/glsl/bump.c
@@ -150,10 +150,11 @@ Redisplay(void)
 static void
 Reshape(int width, int height)
 {
+   float ar = (float) width / (float) height;
    glViewport(0, 0, width, height);
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
-   glFrustum(-1.0, 1.0, -1.0, 1.0, 5.0, 25.0);
+   glFrustum(-ar, ar, -1.0, 1.0, 5.0, 25.0);
    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();
    glTranslatef(0.0f, 0.0f, -15.0f);