eleni@19: #include <GL/gl.h>
eleni@19: #include "tesquad.h"
eleni@19: 
eleni@19: void draw_tess_quad(float x, float y, float w, float h, int usub, int vsub, bool ortho)
eleni@19: {
eleni@23: 	glPushAttrib(GL_ENABLE_BIT);
eleni@23: 	glDisable(GL_DEPTH_TEST);
eleni@23: 	glDisable(GL_LIGHTING);
eleni@23: 
eleni@19: 	if(ortho) {
eleni@19: 		glMatrixMode(GL_PROJECTION);
eleni@19: 		glPushMatrix();
eleni@19: 		glLoadIdentity();
eleni@19: 	}
eleni@19: 
eleni@19: 	float du = 1.0 / usub;
eleni@19: 	float dv = 1.0 / vsub;
eleni@19: 
eleni@19: 	float dx = du * w;
eleni@19: 	float dy = dv * h;
eleni@19: 
eleni@19: 	glBegin(GL_QUADS);
eleni@19: 	for (int i=0; i<vsub; i++) {
eleni@19: 		for (int j=0; j<usub; j++) {
eleni@19: 			float u = j * du;
eleni@19: 			float v = 1.0 - i * dv;
eleni@19: 			float sx = x + j * dx;
eleni@19: 			float sy = y + i * dy;
eleni@19: 
eleni@19: 			glTexCoord2f(u, v);
eleni@19: 			glVertex2f(sx, sy);
eleni@19: 			glTexCoord2f(u + du, v);
eleni@19: 			glVertex2f(sx + dx, sy);
eleni@19: 			glTexCoord2f(u + du, v - dv);
eleni@19: 			glVertex2f(sx + dx, sy + dy);
eleni@19: 			glTexCoord2f(u, v - dv);
eleni@19: 			glVertex2f(sx, sy + dy);
eleni@19: 		}
eleni@19: 	}
eleni@19: 	glEnd();
eleni@19: 
eleni@19: 	if(ortho) {
eleni@19: 		glPopMatrix();
eleni@19: 	}
eleni@23: 	glPopAttrib();
eleni@19: }