nuclear@12: /*
nuclear@13: Printblobs - halftoning display hack
nuclear@12: Copyright (C) 2013  John Tsiombikas <nuclear@member.fsf.org>
nuclear@12: 
nuclear@12: This program is free software: you can redistribute it and/or modify
nuclear@12: it under the terms of the GNU General Public License as published by
nuclear@12: the Free Software Foundation, either version 3 of the License, or
nuclear@12: (at your option) any later version.
nuclear@12: 
nuclear@12: This program is distributed in the hope that it will be useful,
nuclear@12: but WITHOUT ANY WARRANTY; without even the implied warranty of
nuclear@12: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
nuclear@12: GNU General Public License for more details.
nuclear@12: 
nuclear@12: You should have received a copy of the GNU General Public License
nuclear@12: along with this program.  If not, see <http://www.gnu.org/licenses/>.
nuclear@12: */
nuclear@11: #include "opengl.h"
nuclear@11: #include "post.h"
nuclear@11: 
nuclear@11: void overlay(float r, float g, float b, float a)
nuclear@11: {
nuclear@11: 	glPushAttrib(GL_ENABLE_BIT);
nuclear@11: 	glDisable(GL_DEPTH_TEST);
nuclear@11: 	glDisable(GL_LIGHTING);
nuclear@11: 
nuclear@11: 	glMatrixMode(GL_MODELVIEW);
nuclear@11: 	glPushMatrix();
nuclear@11: 	glLoadIdentity();
nuclear@11: 	glMatrixMode(GL_PROJECTION);
nuclear@11: 	glPushMatrix();
nuclear@11: 	glLoadIdentity();
nuclear@11: 
nuclear@11: 	glBegin(GL_QUADS);
nuclear@11: 	glColor4f(r, g, b, a);
nuclear@11: 	glTexCoord2f(0, 0); glVertex2f(-1, -1);
nuclear@11: 	glTexCoord2f(1, 0); glVertex2f(1, -1);
nuclear@11: 	glTexCoord2f(1, 1); glVertex2f(1, 1);
nuclear@11: 	glTexCoord2f(0, 1); glVertex2f(-1, 1);
nuclear@11: 	glEnd();
nuclear@11: 
nuclear@11: 	glPopMatrix();
nuclear@11: 	glMatrixMode(GL_MODELVIEW);
nuclear@11: 	glPopMatrix();
nuclear@11: 
nuclear@11: 	glPopAttrib();
nuclear@11: }