quakeforge/libs/video/renderer/gl/gl_mod_iqm.c
Bill Currie 119e9766b9 [iqm] Use 32-bit indices for large models
That is, those with more than 65520 vertices. Not properly supported for
sw or gl, and glsl isn't rendering properly for some reason (renderdoc
does see the meshes, though, so maybe depth or winding issues).
2024-01-09 13:36:46 +09:00

114 lines
3.1 KiB
C

/*
gl_mod_iqm.c
GL IQM rendering
Copyright (C) 2012 Bill Currie <bill@taniwha.org>
Author: Bill Currie <bill@taniwha.org>
Date: 2012/5/17
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to:
Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#ifdef HAVE_STRING_H
# include <string.h>
#endif
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif
#include <stdlib.h>
#include "QF/cvar.h"
#include "QF/render.h"
#include "QF/skin.h"
#include "QF/sys.h"
#include "QF/GL/defines.h"
#include "QF/GL/funcs.h"
#include "QF/GL/qf_iqm.h"
#include "QF/GL/qf_rmain.h"
#include "QF/GL/qf_vid.h"
#include "QF/scene/entity.h"
#include "r_internal.h"
//FIXME this is really lame: normals are ignored. also, it could be
//faster
static void
gl_draw_iqm_frame (iqm_t *iqm, gliqm_t *gl, iqmframe_t *frame, iqmmesh *mesh)
{
byte *vert;
uint32_t i, j;
qfglBegin (GL_TRIANGLES);
for (i = 0; i < mesh->num_triangles; i++) {
int vind = (mesh->first_triangle + i) * 3;
for (j = 0; j < 3; j++) {
vert = iqm->vertices + iqm->elements16[vind + j] * iqm->stride;
if (gl->texcoord)
qfglTexCoord2fv ((float *) (vert + gl->texcoord->offset));
if (gl->color)
qfglColor4bv ((GLbyte *) (vert + gl->color->offset));
if (gl->bindices) {
vec3_t position;
uint32_t bind = *(uint32_t *) (vert + gl->bindices->offset);
vec_t *f = (vec_t *) &frame[bind];
float *v = (float *) (vert + gl->position->offset);
Mat4MultVec (f, v, position);
qfglVertex3fv (position);
} else {
qfglVertex3fv ((float *) (vert + gl->position->offset));
}
}
}
qfglEnd ();
}
void
gl_R_DrawIQMModel (entity_t ent)
{
renderer_t *renderer = Ent_GetComponent (ent.id, ent.base + scene_renderer, ent.reg);
model_t *model = renderer->model;
iqm_t *iqm = (iqm_t *) model->aliashdr;
gliqm_t *gl = (gliqm_t *) iqm->extra_data;
float blend;
iqmframe_t *frame;
int i;
animation_t *animation = Ent_GetComponent (ent.id, ent.base + scene_animation,
ent.reg);
blend = R_IQMGetLerpedFrames (animation, iqm);
frame = R_IQMBlendPalette (iqm, animation->pose1, animation->pose2,
blend, 0, gl->blend_palette, gl->palette_size);
qfglPushMatrix ();
transform_t transform = Entity_Transform (ent);
gl_R_RotateForEntity (Transform_GetWorldMatrixPtr (transform));
for (i = 0; i < iqm->num_meshes; i++) {
qfglBindTexture (GL_TEXTURE_2D, gl->textures[i]);
gl_draw_iqm_frame (iqm, gl, frame, &iqm->meshes[i]);
}
qfglPopMatrix ();
}