use define for 0.375 = GLA_PIXEL_OFS, used all over the interface.

also use M_SQRT1_2 in math_rotation.c

1 files changed, 2 insertions, 2 deletions

diff --git a/source/blender/editors/screen/glutil.c b/source/blender/editors/screen/glutil.c
index 5296c8615ab..a534124d2c0 100644
--- a/source/blender/editors/screen/glutil.c
+++ b/source/blender/editors/screen/glutil.c
@@ -674,7 +674,7 @@ void glaDefine2DArea(rcti *screen_rect)
 	glViewport(screen_rect->xmin, screen_rect->ymin, sc_w, sc_h);
 	glScissor(screen_rect->xmin, screen_rect->ymin, sc_w, sc_h);
 
-	/* The 0.375 magic number is to shift the matrix so that
+	/* The GLA_PIXEL_OFS magic number is to shift the matrix so that
 	 * both raster and vertex integer coordinates fall at pixel
 	 * centers properly. For a longer discussion see the OpenGL
 	 * Programming Guide, Appendix H, Correctness Tips.
@@ -683,7 +683,7 @@ void glaDefine2DArea(rcti *screen_rect)
 	glMatrixMode(GL_PROJECTION);
 	glLoadIdentity();
 	glOrtho(0.0, sc_w, 0.0, sc_h, -1, 1);
-	glTranslatef(0.375, 0.375, 0.0);
+	glTranslatef(GLA_PIXEL_OFS, GLA_PIXEL_OFS, 0.0);
 
 	glMatrixMode(GL_MODELVIEW);
 	glLoadIdentity();