quakeforge/libs/models/iqm/gl_model_iqm.c
Bill Currie c3801d46e5 Render iqm models in GL.
There are still many issues to sort out, but the basics are working.

Problems:
	rendered fullbright (no lighting done)
	normals are ignored
	extra textures (glow etc) not used/loaded

4 models on the screen don't seem to be a problem.
2012-05-17 15:58:29 +09:00

119 lines
3 KiB
C

/*
gl_model_iqm.c
iqm model processing for GLSL
Copyright (C) 2011 Bill Currie <bill@taniwha.org>
Author: Bill Currie <bill@taniwha.org>
Date: 2012/04/27
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 "QF/dstring.h"
#include "QF/image.h"
#include "QF/quakefs.h"
#include "QF/va.h"
#include "QF/GL/qf_iqm.h"
#include "QF/GL/qf_textures.h"
#include "mod_internal.h"
static byte null_texture[] = {
204, 204, 204, 255,
204, 204, 204, 255,
204, 204, 204, 255,
204, 204, 204, 255,
};
static void
gl_iqm_clear (model_t *mod)
{
iqm_t *iqm = (iqm_t *) mod->aliashdr;
gliqm_t *gl = (gliqm_t *) iqm->extra_data;
mod->needload = true;
free (gl->blend_palette);
free (gl);
Mod_FreeIQM (iqm);
}
static void
gl_iqm_load_textures (iqm_t *iqm)
{
gliqm_t *gl = (gliqm_t *) iqm->extra_data;
int i;
dstring_t *str = dstring_new ();
tex_t *tex;
gl->textures = malloc (iqm->num_meshes * sizeof (int));
for (i = 0; i < iqm->num_meshes; i++) {
dstring_copystr (str, iqm->text + iqm->meshes[i].material);
QFS_StripExtension (str->str, str->str);
if ((tex = LoadImage (va ("textures/%s", str->str))))
gl->textures[i] = GL_LoadTexture (str->str, tex->width,
tex->height, tex->data, true,
false,
tex->format > 2 ? tex->format
: 1);
else
gl->textures[i] = GL_LoadTexture ("", 2, 2, null_texture, true,
false, 4);
}
dstring_delete (str);
}
void
gl_Mod_IQMFinish (model_t *mod)
{
iqm_t *iqm = (iqm_t *) mod->aliashdr;
gliqm_t *gl;
int i;
mod->clear = gl_iqm_clear;
iqm->extra_data = gl = calloc (1, sizeof (gliqm_t));
gl_iqm_load_textures (iqm);
gl->blend_palette = Mod_IQMBuildBlendPalette (iqm, &gl->palette_size);
for (i = 0; i < iqm->num_arrays; i++) {
if (iqm->vertexarrays[i].type == IQM_POSITION)
gl->position = &iqm->vertexarrays[i];
if (iqm->vertexarrays[i].type == IQM_TEXCOORD)
gl->texcoord = &iqm->vertexarrays[i];
if (iqm->vertexarrays[i].type == IQM_NORMAL)
gl->normal = &iqm->vertexarrays[i];
if (iqm->vertexarrays[i].type == IQM_BLENDINDEXES)
gl->bindices = &iqm->vertexarrays[i];
if (iqm->vertexarrays[i].type == IQM_COLOR)
gl->color = &iqm->vertexarrays[i];
}
}