intravenous: src/geom.cc annotate

intravenous

I think I pretty much nailed the camera

author	John Tsiombikas <nuclear@member.fsf.org>
date	Sat, 21 Apr 2012 23:03:36 +0300
parents
children	94d4c60af435

rev	line source
nuclear@1	1 #include "opengl.h"
nuclear@1	2 #include "geom.h"
nuclear@1	3
nuclear@1	4 #ifdef SINGLE_PRECISION_MATH
nuclear@1	5 #define ELEM_TYPE GL_FLOAT
nuclear@1	6 #else
nuclear@1	7 #define ELEM_TYPE GL_DOUBLE
nuclear@1	8 #endif
nuclear@1	9
nuclear@1	10 void draw_mesh(unsigned int prim, int num_verts, const Vertex vbuf, const unsigned int ibuf)
nuclear@1	11 {
nuclear@1	12 glEnableClientState(GL_VERTEX_ARRAY);
nuclear@1	13 glVertexPointer(3, ELEM_TYPE, sizeof *vbuf, &vbuf->pos);
nuclear@1	14
nuclear@1	15 glEnableClientState(GL_NORMAL_ARRAY);
nuclear@1	16 glNormalPointer(ELEM_TYPE, sizeof *vbuf, &vbuf->norm);
nuclear@1	17
nuclear@1	18 glEnableClientState(GL_TEXTURE_COORD_ARRAY);
nuclear@1	19 glTexCoordPointer(2, ELEM_TYPE, sizeof *vbuf, &vbuf->tc);
nuclear@1	20
nuclear@1	21 if(ibuf) {
nuclear@1	22 glDrawElements(prim, num_verts, GL_UNSIGNED_INT, ibuf);
nuclear@1	23 } else {
nuclear@1	24 glDrawArrays(prim, 0, num_verts);
nuclear@1	25 }
nuclear@1	26
nuclear@1	27 glDisableClientState(GL_VERTEX_ARRAY);
nuclear@1	28 glDisableClientState(GL_NORMAL_ARRAY);
nuclear@1	29 glDisableClientState(GL_TEXTURE_COORD_ARRAY);
nuclear@1	30 #if 0
nuclear@1	31 glBegin(GL_QUADS);
nuclear@1	32 for(int i=0; i<count; i++) {
nuclear@1	33 for(int j=0; j<4; j++) {
nuclear@1	34 const Vertex v = vbuf + ibuf[i 4 + j];
nuclear@1	35 glNormal3f(v->norm.x, v->norm.y, v->norm.z);
nuclear@1	36 glVertex3f(v->pos.x, v->pos.y, v->pos.z);
nuclear@1	37 }
nuclear@1	38 }
nuclear@1	39 glEnd();
nuclear@1	40 #endif
nuclear@1	41 }