nuclear@54: #include <string.h>
nuclear@54: #include <assert.h>
nuclear@54: #include "rt.h"
nuclear@54: #include "ogl.h"
nuclear@54: 
nuclear@54: #define MIN(a, b)	((a) < (b) ? (a) : (b))
nuclear@54: static void dbg_set_gl_material(Material *mat)
nuclear@54: {
nuclear@54: 	static Material def_mat = {{0.7, 0.7, 0.7, 1}, {0, 0, 0, 0}, 0, 0, 0};
nuclear@54: 
nuclear@54: 	if(!mat) mat = &def_mat;
nuclear@54: 
nuclear@54: 	glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, mat->kd);
nuclear@54: 	glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, mat->ks);
nuclear@54: 	glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, MIN(mat->spow, 128.0f));
nuclear@54: }
nuclear@54: 
nuclear@54: void dbg_render_gl(Scene *scn, bool show_tree, bool show_obj)
nuclear@54: {
nuclear@54: 	const RendInfo *rinf = get_render_info();
nuclear@54: 	const Face *faces = scn->get_face_buffer();
nuclear@54: 
nuclear@54: 	glPushAttrib(GL_ENABLE_BIT | GL_TRANSFORM_BIT | GL_LIGHTING_BIT);
nuclear@54: 
nuclear@54: 	for(int i=0; i<scn->get_num_lights(); i++) {
nuclear@54: 		float lpos[4];
nuclear@54: 
nuclear@54: 		memcpy(lpos, scn->lights[i].pos, sizeof lpos);
nuclear@54: 		lpos[3] = 1.0;
nuclear@54: 
nuclear@54: 		glLightfv(GL_LIGHT0 + i, GL_POSITION, lpos);
nuclear@54: 		glLightfv(GL_LIGHT0 + i, GL_DIFFUSE, scn->lights[i].color);
nuclear@54: 		glEnable(GL_LIGHT0 + i);
nuclear@54: 	}
nuclear@54: 
nuclear@54: 	glDisable(GL_TEXTURE_2D);
nuclear@54: 	glEnable(GL_DEPTH_TEST);
nuclear@54: 	glEnable(GL_LIGHTING);
nuclear@54: 
nuclear@54: 	glMatrixMode(GL_PROJECTION);
nuclear@54: 	glPushMatrix();
nuclear@54: 	glLoadIdentity();
nuclear@54: 	gluPerspective(45.0, (float)rinf->xsz / (float)rinf->ysz, 0.5, 1000.0);
nuclear@54: 
nuclear@54: 	if(show_obj) {
nuclear@54: 		Material *materials = scn->get_materials();
nuclear@54: 
nuclear@54: 		int num_faces = scn->get_num_faces();
nuclear@54: 		int cur_mat = -1;
nuclear@54: 
nuclear@54: 		for(int i=0; i<num_faces; i++) {
nuclear@54: 			if(faces[i].matid != cur_mat) {
nuclear@54: 				if(cur_mat != -1) {
nuclear@54: 					glEnd();
nuclear@54: 				}
nuclear@54: 				dbg_set_gl_material(materials ? materials + faces[i].matid : 0);
nuclear@54: 				cur_mat = faces[i].matid;
nuclear@54: 				glBegin(GL_TRIANGLES);
nuclear@54: 			}
nuclear@54: 
nuclear@54: 			for(int j=0; j<3; j++) {
nuclear@54: 				glNormal3fv(faces[i].v[j].normal);
nuclear@54: 				glVertex3fv(faces[i].v[j].pos);
nuclear@54: 			}
nuclear@54: 		}
nuclear@54: 		glEnd();
nuclear@54: 	}
nuclear@54: 
nuclear@54: 	if(show_tree) {
nuclear@54: 		scn->draw_kdtree();
nuclear@54: 	}
nuclear@54: 
nuclear@54: 	glPopMatrix();
nuclear@54: 	glPopAttrib();
nuclear@54: 
nuclear@54: 	assert(glGetError() == GL_NO_ERROR);
nuclear@54: }