quakeforge/libs/video/renderer/glsl/glsl_main.c

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/*
glsl_main.c
GLSL rendering
Copyright (C) 2011 Bill Currie <bill@taniwha.org>
Author: Bill Currie <bill@taniwha.org>
Date: 2011/12/23
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
#define NH_DEFINE
#include "namehack.h"
#ifdef HAVE_STRING_H
# include "string.h"
#endif
#ifdef HAVE_STRINGS_H
# include "strings.h"
#endif
#include "QF/cmd.h"
#include "QF/cvar.h"
#include "QF/image.h"
#include "QF/render.h"
#include "QF/screen.h"
#include "QF/sys.h"
#include "QF/GLSL/defines.h"
#include "QF/GLSL/funcs.h"
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#include "QF/GLSL/qf_alias.h"
#include "QF/GLSL/qf_bsp.h"
#include "QF/GLSL/qf_iqm.h"
#include "QF/GLSL/qf_lightmap.h"
#include "QF/GLSL/qf_textures.h"
#include "mod_internal.h"
#include "r_internal.h"
mat4_t glsl_projection;
mat4_t glsl_view;
void
glsl_R_ViewChanged (float aspect)
{
double xmin, xmax, ymin, ymax;
float fovx, fovy, neard, fard;
vec_t *proj = glsl_projection;
fovx = r_refdef.fov_x;
fovy = r_refdef.fov_y;
neard = r_nearclip->value;
fard = r_farclip->value;
ymax = neard * tan (fovy * M_PI / 360); // fov_2 / 2
ymin = -ymax;
xmax = neard * tan (fovx * M_PI / 360); // fov_2 / 2
xmin = -xmax;
proj[0] = (2 * neard) / (xmax - xmin);
proj[4] = 0;
proj[8] = (xmax + xmin) / (xmax - xmin);
proj[12] = 0;
proj[1] = 0;
proj[5] = (2 * neard) / (ymax - ymin);
proj[9] = (ymax + ymin) / (ymax - ymin);
proj[13] = 0;
proj[2] = 0;
proj[6] = 0;
proj[10] = (fard + neard) / (neard - fard);
proj[14] = (2 * fard * neard) / (neard - fard);
proj[3] = 0;
proj[7] = 0;
proj[11] = -1;
proj[15] = 0;
}
void
glsl_R_SetupFrame (void)
{
R_AnimateLight ();
R_ClearEnts ();
r_framecount++;
VectorCopy (r_refdef.vieworg, r_origin);
AngleVectors (r_refdef.viewangles, vpn, vright, vup);
R_SetFrustum ();
r_viewleaf = Mod_PointInLeaf (r_origin, r_worldentity.model);
}
static void
R_SetupView (void)
{
float x, y, w, h;
mat4_t mat;
static mat4_t z_up = {
0, 0, -1, 0,
-1, 0, 0, 0,
0, 1, 0, 0,
0, 0, 0, 1,
};
x = r_refdef.vrect.x;
y = (vid.height - (r_refdef.vrect.y + r_refdef.vrect.height));
w = r_refdef.vrect.width;
h = r_refdef.vrect.height;
qfeglViewport (x, y, w, h);
Mat4Zero (mat);
VectorCopy (vpn, mat + 0);
VectorNegate (vright, mat + 4); // we want vleft
VectorCopy (vup, mat + 8);
mat[15] = 1;
Mat4Transpose (mat, mat);//AngleVectors gives the transpose of what we want
Mat4Mult (z_up, mat, glsl_view);
Mat4Identity (mat);
VectorNegate (r_refdef.vieworg, mat + 12);
Mat4Mult (glsl_view, mat, glsl_view);
qfeglEnable (GL_CULL_FACE);
qfeglEnable (GL_DEPTH_TEST);
}
static void
R_RenderEntities (void)
{
entity_t *ent;
int begun;
if (!r_drawentities->int_val)
return;
#define RE_LOOP(type_name, Type) \
do { \
begun = 0; \
for (ent = r_ent_queue; ent; ent = ent->next) { \
if (ent->model->type != mod_##type_name) \
continue; \
if (!begun) { \
glsl_R_##Type##Begin (); \
begun = 1; \
} \
currententity = ent; \
glsl_R_Draw##Type (); \
} \
if (begun) \
glsl_R_##Type##End (); \
} while (0)
RE_LOOP (alias, Alias);
RE_LOOP (iqm, IQM);
RE_LOOP (sprite, Sprite);
}
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static void
R_DrawViewModel (void)
{
currententity = vr_data.view_model;
if (vr_data.inhibit_viewmodel
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|| !r_drawviewmodel->int_val
|| !r_drawentities->int_val
|| !currententity->model)
return;
// hack the depth range to prevent view model from poking into walls
qfeglDepthRangef (0, 0.3);
glsl_R_AliasBegin ();
glsl_R_DrawAlias ();
glsl_R_AliasEnd ();
qfeglDepthRangef (0, 1);
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}
void
glsl_R_RenderView (void)
{
double t[10] = {};
int speeds = r_speeds->int_val;
if (speeds)
t[0] = Sys_DoubleTime ();
glsl_R_SetupFrame ();
R_SetupView ();
if (speeds)
t[1] = Sys_DoubleTime ();
R_MarkLeaves ();
if (speeds)
t[2] = Sys_DoubleTime ();
R_PushDlights (vec3_origin);
if (speeds)
t[3] = Sys_DoubleTime ();
glsl_R_DrawWorld ();
if (speeds)
t[4] = Sys_DoubleTime ();
glsl_R_DrawSky ();
if (speeds)
t[5] = Sys_DoubleTime ();
R_RenderEntities ();
if (speeds)
t[6] = Sys_DoubleTime ();
glsl_R_DrawWaterSurfaces ();
if (speeds)
t[7] = Sys_DoubleTime ();
glsl_R_DrawParticles ();
if (speeds)
t[8] = Sys_DoubleTime ();
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R_DrawViewModel ();
if (speeds)
t[9] = Sys_DoubleTime ();
if (speeds) {
Sys_Printf ("frame: %g, setup: %g, mark: %g, pushdl: %g, world: %g,"
" sky: %g, ents: %g, water: %g, part: %g, view: %g\n",
(t[9] - t[0]) * 1000, (t[1] - t[0]) * 1000,
(t[2] - t[1]) * 1000, (t[3] - t[2]) * 1000,
(t[4] - t[3]) * 1000, (t[5] - t[4]) * 1000,
(t[6] - t[5]) * 1000, (t[7] - t[6]) * 1000,
(t[8] - t[7]) * 1000, (t[9] - t[8]) * 1000);
}
}
void
glsl_R_Init (void)
{
Cmd_AddCommand ("pointfile", glsl_R_ReadPointFile_f,
"Load a pointfile to determine map leaks.");
Cmd_AddCommand ("timerefresh", glsl_R_TimeRefresh_f,
"Test the current refresh rate for the current location.");
R_Init_Cvars ();
glsl_R_Particles_Init_Cvars ();
glsl_Draw_Init ();
SCR_Init ();
glsl_R_InitBsp ();
glsl_R_InitAlias ();
glsl_R_InitIQM ();
glsl_R_InitSprites ();
glsl_R_InitParticles ();
glsl_Fog_Init ();
Skin_Init ();
}
void
glsl_R_NewMap (model_t *worldmodel, struct model_s **models, int num_models)
{
int i;
for (i = 0; i < 256; i++)
d_lightstylevalue[i] = 264; // normal light value
memset (&r_worldentity, 0, sizeof (r_worldentity));
r_worldentity.model = worldmodel;
// Force a vis update
r_viewleaf = NULL;
R_MarkLeaves ();
R_FreeAllEntities ();
glsl_R_ClearParticles ();
glsl_R_RegisterTextures (models, num_models);
glsl_R_BuildLightmaps (models, num_models);
glsl_R_BuildDisplayLists (models, num_models);
}
void
glsl_R_LineGraph (int x, int y, int *h_vals, int count)
{
}
void
glsl_R_ClearState (void)
{
R_ClearEfrags ();
R_ClearDlights ();
glsl_R_ClearParticles ();
}
void
glsl_R_TimeRefresh_f (void)
{
double start, stop, time;
int i;
vid.end_rendering ();
start = Sys_DoubleTime ();
for (i = 0; i < 128; i++) {
r_refdef.viewangles[1] = i * (360.0 / 128.0);
glsl_R_RenderView ();
vid.end_rendering ();
}
stop = Sys_DoubleTime ();
time = stop - start;
Sys_Printf ("%g seconds (%g fps)\n", time, 128 / time);
}