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dxx-rebirth/arch/ogl/gr.c

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/* $Id: gr.c,v 1.1.1.1 2006/03/17 19:53:31 zicodxx Exp $ */
/*
*
* OGL video functions. - Added 9/15/99 Matthew Mueller
*
*
*/
#ifdef HAVE_CONFIG_H
#include <conf.h>
#endif
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <limits.h>
#ifdef _MSC_VER
#include <windows.h>
#endif
#if !defined(_MSC_VER) && !defined(macintosh)
#include <unistd.h>
#endif
#if !defined(macintosh)
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#endif
#include <errno.h>
#include "hudmsg.h"
#include "game.h"
#include "text.h"
#include "gr.h"
#include "gamefont.h"
#include "grdef.h"
#include "palette.h"
#include "u_mem.h"
#include "error.h"
#include "inferno.h"
#include "screens.h"
#include "strutil.h"
#include "mono.h"
#include "args.h"
#include "key.h"
#include "physfsx.h"
#define DECLARE_VARS
#include "internal.h"
#if defined(__APPLE__) && defined(__MACH__)
#include <OpenGL/glu.h>
#undef GL_ARB_multitexture // hack!
#elif defined(_WIN32) // HACK - REMOVE ASAP
#undef GL_ARB_multitexture
#undef GL_NV_register_combiners
#undef GL_EXT_paletted_texture
#else
#include <GL/glu.h>
#endif
int ogl_voodoohack=0;
int gr_installed = 0;
int gl_initialized=0;
int gl_reticle = 0;
int ogl_fullscreen;
int ogl_scissor_ok=1;
int glalpha_effects=0;
void gr_palette_clear(); // Function prototype for gr_init;
int gr_check_fullscreen(void){
return ogl_fullscreen;
}
void gr_do_fullscreen(int f){
if (ogl_voodoohack)
ogl_fullscreen=1;//force fullscreen mode on voodoos.
else
ogl_fullscreen=f;
if (gl_initialized){
ogl_do_fullscreen_internal();
}
}
int gr_toggle_fullscreen(void){
gr_do_fullscreen(!ogl_fullscreen);
// grd_curscreen->sc_mode=0;//hack to get it to reset screen mode
return ogl_fullscreen;
}
int arch_toggle_fullscreen_menu(void){
unsigned char *buf=NULL;
if (ogl_readpixels_ok){
MALLOC(buf,unsigned char,grd_curscreen->sc_w*grd_curscreen->sc_h*3);
glReadBuffer(GL_FRONT);
glReadPixels(0,0,grd_curscreen->sc_w,grd_curscreen->sc_h,GL_RGB,GL_UNSIGNED_BYTE,buf);
}
gr_do_fullscreen(!ogl_fullscreen);
if (ogl_readpixels_ok){
// glWritePixels(0,0,grd_curscreen->sc_w,grd_curscreen->sc_h,GL_RGB,GL_UNSIGNED_BYTE,buf);
glRasterPos2f(0,0);
glDrawPixels(grd_curscreen->sc_w,grd_curscreen->sc_h,GL_RGB,GL_UNSIGNED_BYTE,buf);
free(buf);
}
// grd_curscreen->sc_mode=0;//hack to get it to reset screen mode
return ogl_fullscreen;
}
void ogl_init_state(void){
/* select clearing (background) color */
glClearColor(0.0, 0.0, 0.0, 0.0);
glShadeModel(GL_SMOOTH);
/* initialize viewing values */
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0.0, 1.0, 0.0, 1.0, -1.0, 1.0);
glScalef(1.0, -1.0, 1.0);
glTranslatef(0.0, -1.0, 0.0);
gr_palette_step_up(0,0,0);//in case its left over from in game
}
int last_screen_mode=-1;
extern void ogl_init_pixel_buffers(int w, int h);
extern void ogl_close_pixel_buffers(void);
void ogl_set_screen_mode(void){
if (last_screen_mode==Screen_mode)
return;
OGL_VIEWPORT(0,0,grd_curscreen->sc_w,grd_curscreen->sc_h);
if (Screen_mode==SCREEN_GAME){
glDrawBuffer(GL_BACK);
}else{
glClearColor(0.0, 0.0, 0.0, 0.0);
glDrawBuffer(GL_FRONT);
glClear(GL_COLOR_BUFFER_BIT);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();//clear matrix
glOrtho(0.0, 1.0, 0.0, 1.0, -1.0, 1.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();//clear matrix
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
}
ogl_init_pixel_buffers(grd_curscreen->sc_w, grd_curscreen->sc_h);
last_screen_mode=Screen_mode;
}
void gr_update()
{
if (gl_initialized){
if(Screen_mode != SCREEN_GAME){
glFlush();
}
}
}
const char *gl_vendor, *gl_renderer, *gl_version, *gl_extensions;
void ogl_get_verinfo(void)
{
long t;
#ifdef GL_NV_register_combiners
long nv_register_combiners = -1;
#endif
#if defined(GL_NV_register_combiners) || defined(GL_SGIS_multitexture)
GLint sgi_max_textures;
#endif
#ifdef GL_ARB_multitexture
GLint arb_max_textures;
#endif
float anisotropic_max = 0;
gl_vendor = (const char *) glGetString (GL_VENDOR);
gl_renderer = (const char *) glGetString (GL_RENDERER);
gl_version = (const char *) glGetString (GL_VERSION);
gl_extensions = (const char *) glGetString (GL_EXTENSIONS);
con_printf(CON_VERBOSE, "OpenGL: vendor: %s\nOpenGL: renderer: %s\nOpenGL: version: %s\n",gl_vendor,gl_renderer,gl_version);
ogl_intensity4_ok = 1;
ogl_luminance4_alpha4_ok = 1;
ogl_rgba2_ok = 1;
ogl_gettexlevelparam_ok = 1;
ogl_setgammaramp_ok = 0;
#ifdef WGL_VIDEO
dglMultiTexCoord2fARB = (glMultiTexCoord2fARB_fp)wglGetProcAddress("glMultiTexCoord2fARB");
dglActiveTextureARB = (glActiveTextureARB_fp)wglGetProcAddress("glActiveTextureARB");
dglMultiTexCoord2fSGIS = (glMultiTexCoord2fSGIS_fp)wglGetProcAddress("glMultiTexCoord2fSGIS");
dglSelectTextureSGIS = (glSelectTextureSGIS_fp)wglGetProcAddress("glSelectTextureSGIS");
dglColorTableEXT = (glColorTableEXT_fp)wglGetProcAddress("glColorTableEXT");
dglCombinerParameteriNV = (glCombinerParameteriNV_fp)wglGetProcAddress("glCombinerParameteriNV");
dglCombinerInputNV = (glCombinerInputNV_fp)wglGetProcAddress("glCombinerInputNV");
dglCombinerOutputNV = (glCombinerOutputNV_fp)wglGetProcAddress("glCombinerOutputNV");
dglFinalCombinerInputNV = (glFinalCombinerInputNV_fp)wglGetProcAddress("glFinalCombinerInputNV");
#endif
#ifdef GL_ARB_multitexture
ogl_arb_multitexture_ok = (strstr(gl_extensions, "GL_ARB_multitexture") != 0 && glActiveTextureARB != 0);
mprintf((0,"c:%p d:%p e:%p\n",strstr(gl_extensions,"GL_ARB_multitexture"),glActiveTextureARB,glBegin));
#endif
#ifdef GL_SGIS_multitexture
ogl_sgis_multitexture_ok = (strstr(gl_extensions, "GL_SGIS_multitexture") != 0 && glSelectTextureSGIS != 0);
mprintf((0,"a:%p b:%p\n",strstr(gl_extensions,"GL_SGIS_multitexture"),glSelectTextureSGIS));
#endif
ogl_nv_texture_env_combine4_ok = (strstr(gl_extensions, "GL_NV_texture_env_combine4") != 0);
#ifdef GL_NV_register_combiners
ogl_nv_register_combiners_ok=(strstr(gl_extensions,"GL_NV_register_combiners")!=0 && glCombinerOutputNV!=0);
#endif
ogl_ext_texture_filter_anisotropic_ok = (strstr(gl_extensions, "GL_EXT_texture_filter_anisotropic") != 0);
if (ogl_ext_texture_filter_anisotropic_ok)
glGetFloatv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &anisotropic_max);
#ifdef GL_EXT_paletted_texture
ogl_paletted_texture_ok = (strstr(gl_extensions, "GL_EXT_paletted_texture") != 0 && glColorTableEXT != 0);
ogl_shared_palette_ok = (strstr(gl_extensions, "GL_EXT_shared_texture_palette") != 0 && ogl_paletted_texture_ok);
#endif
//add driver specific hacks here. whee.
if ((stricmp(gl_renderer,"Mesa NVIDIA RIVA 1.0\n")==0 || stricmp(gl_renderer,"Mesa NVIDIA RIVA 1.2\n")==0) && stricmp(gl_version,"1.2 Mesa 3.0")==0){
ogl_intensity4_ok=0;//ignores alpha, always black background instead of transparent.
ogl_readpixels_ok=0;//either just returns all black, or kills the X server entirely
ogl_gettexlevelparam_ok=0;//returns random data..
}
if (stricmp(gl_vendor,"Matrox Graphics Inc.")==0){
//displays garbage. reported by
// redomen@crcwnet.com (render="Matrox G400" version="1.1.3 5.52.015")
// orulz (Matrox G200)
ogl_intensity4_ok=0;
}
#ifdef macintosh
if (stricmp(gl_renderer,"3dfx Voodoo 3")==0){ // strangely, includes Voodoo 2
ogl_gettexlevelparam_ok=0; // Always returns 0
}
#endif
//allow overriding of stuff.
#ifdef GL_ARB_multitexture
if ((t=FindArg("-gl_arb_multitexture_ok"))){
ogl_arb_multitexture_ok=atoi(Args[t+1]);
}
if (ogl_arb_multitexture_ok)
glGetIntegerv(GL_MAX_TEXTURE_UNITS_ARB, &arb_max_textures);
#endif
#ifdef GL_SGIS_multitexture
if ((t=FindArg("-gl_sgis_multitexture_ok"))){
ogl_sgis_multitexture_ok=atoi(Args[t+1]);
}
if (ogl_sgis_multitexture_ok)
glGetIntegerv(GL_MAX_TEXTURES_SGIS, &sgi_max_textures);
#endif
#ifdef GL_NV_register_combiners
if ((t = FindArg("-gl_nv_register_combiners_ok")))
{
ogl_nv_register_combiners_ok=atoi(Args[t + 1]);
}
if (ogl_nv_register_combiners_ok)
glGetIntegerv(GL_MAX_GENERAL_COMBINERS_NV, &nv_register_combiners);
#endif
#ifdef GL_EXT_paletted_texture
if ((t = FindArg("-gl_paletted_texture_ok")))
{
ogl_paletted_texture_ok = atoi(Args[t + 1]);
}
if ((t = FindArg("-gl_shared_palette_ok")))
{
ogl_shared_palette_ok = atoi(Args[t + 1]);
}
ogl_shared_palette_ok = ogl_shared_palette_ok && ogl_paletted_texture_ok; // shared palettes require palette support in the first place, obviously ;)
printf("gl_paletted_texture: %i gl_shared_palette: %i (using paletted textures: %i)\n", ogl_paletted_texture_ok, ogl_shared_palette_ok, ogl_shared_palette_ok);
#endif
if ((t=FindArg("-gl_intensity4_ok"))){
ogl_intensity4_ok=atoi(Args[t+1]);
}
if ((t=FindArg("-gl_luminance4_alpha4_ok"))){
ogl_luminance4_alpha4_ok=atoi(Args[t+1]);
}
if ((t=FindArg("-gl_rgba2_ok"))){
ogl_rgba2_ok=atoi(Args[t+1]);
}
if ((t=FindArg("-gl_readpixels_ok"))){
ogl_readpixels_ok=atoi(Args[t+1]);
}
if ((t=FindArg("-gl_gettexlevelparam_ok"))){
ogl_gettexlevelparam_ok=atoi(Args[t+1]);
}
if ((t=FindArg("-gl_setgammaramp_ok")))
{
ogl_setgammaramp_ok = atoi(Args[t + 1]);
}
if ((t=FindArg("-gl_scissor_ok")))
{
ogl_scissor_ok = atoi(Args[t + 1]);
}
#ifdef GL_NV_register_combiners
con_printf(CON_VERBOSE, "gl_arb_multitexture:%i(%i units) gl_sgis_multitexture:%i(%i units) gl_nv_texture_env_combine4:%i\n", ogl_arb_multitexture_ok, arb_max_textures, ogl_sgis_multitexture_ok, sgi_max_textures, ogl_nv_texture_env_combine4_ok); // ZICO - moved this to this ifdef
con_printf(CON_VERBOSE, "gl_nv_register_combiners:%i(%i stages)\n", ogl_nv_register_combiners_ok, nv_register_combiners);
#endif
con_printf(CON_VERBOSE, "gl_intensity4:%i gl_luminance4_alpha4:%i gl_rgba2:%i gl_readpixels:%i gl_gettexlevelparam:%i gl_setgammaramp_ok:%i gl_ext_texture_filter_anisotropic:%i(%f max) gl_scissor_ok:%i\n", ogl_intensity4_ok, ogl_luminance4_alpha4_ok, ogl_rgba2_ok, ogl_readpixels_ok, ogl_gettexlevelparam_ok, ogl_setgammaramp_ok, ogl_ext_texture_filter_anisotropic_ok, anisotropic_max,ogl_scissor_ok);
}
int gr_check_mode(u_int32_t mode)
{
int w, h;
w = SM_W(mode);
h = SM_H(mode);
return ogl_check_mode(w, h); // platform specific code
}
extern int VGA_current_mode; // DPH: kludge - remove at all costs
int gr_set_mode(u_int32_t mode)
{
unsigned int w, h;
int aw, ah;
char *gr_bm_data;
float awidth = 3, aheight = 4;
int i, argnum = INT_MAX;
#ifdef NOGRAPH
return 0;
#endif
// mode=0;
if (mode<=0)
return 0;
w=SM_W(mode);
h=SM_H(mode);
VGA_current_mode = mode;
//if (screen != NULL) gr_palette_clear();
// ogl_init_state();
if ((i=FindResArg("aspect", &ah, &aw)) && (i < argnum)) { argnum = i; awidth=aw; aheight=ah; }
gr_bm_data=(char *)grd_curscreen->sc_canvas.cv_bitmap.bm_data;//since we use realloc, we want to keep this pointer around.
memset( grd_curscreen, 0, sizeof(grs_screen));
grd_curscreen->sc_mode = mode;
grd_curscreen->sc_w = w;
grd_curscreen->sc_h = h;
grd_curscreen->sc_aspect = fixdiv(grd_curscreen->sc_w*awidth,grd_curscreen->sc_h*aheight);
grd_curscreen->sc_canvas.cv_bitmap.bm_x = 0;
grd_curscreen->sc_canvas.cv_bitmap.bm_y = 0;
grd_curscreen->sc_canvas.cv_bitmap.bm_w = w;
grd_curscreen->sc_canvas.cv_bitmap.bm_h = h;
//grd_curscreen->sc_canvas.cv_bitmap.bm_rowsize = screen->pitch;
grd_curscreen->sc_canvas.cv_bitmap.bm_rowsize = w;
grd_curscreen->sc_canvas.cv_bitmap.bm_type = BM_OGL;
//grd_curscreen->sc_canvas.cv_bitmap.bm_data = (unsigned char *)screen->pixels;
// mprintf((0,"ogl/gr.c: reallocing %p to %i\n",grd_curscreen->sc_canvas.cv_bitmap.bm_data,w*h));
grd_curscreen->sc_canvas.cv_bitmap.bm_data = d_realloc(gr_bm_data,w*h);
gr_set_current_canvas(NULL);
//gr_enable_default_palette_loading();
ogl_init_window(w,h);//platform specific code
ogl_get_verinfo();
OGL_VIEWPORT(0,0,w,h);
ogl_set_screen_mode();
gr_update();
// gamefont_choose_game_font(w,h);
return 0;
}
#define GLstrcmptestr(a,b) if (stricmp(a,#b)==0 || stricmp(a,"GL_" #b)==0)return GL_ ## b;
int ogl_atotexfilti(char *a,int min){
GLstrcmptestr(a,NEAREST);
GLstrcmptestr(a,LINEAR);
if (min){//mipmaps are valid only for the min filter
GLstrcmptestr(a,NEAREST_MIPMAP_NEAREST);
GLstrcmptestr(a,NEAREST_MIPMAP_LINEAR);
GLstrcmptestr(a,LINEAR_MIPMAP_NEAREST);
GLstrcmptestr(a,LINEAR_MIPMAP_LINEAR);
}
Error("unknown/invalid texture filter %s\n",a);
// return GL_NEAREST;
}
int ogl_testneedmipmaps(int i){
switch (i){
case GL_NEAREST:
case GL_LINEAR:
return 0;
case GL_NEAREST_MIPMAP_NEAREST:
case GL_NEAREST_MIPMAP_LINEAR:
case GL_LINEAR_MIPMAP_NEAREST:
case GL_LINEAR_MIPMAP_LINEAR:
return 1;
}
Error("unknown texture filter %x\n",i);
// return -1;
}
#ifdef OGL_RUNTIME_LOAD
#ifdef _WIN32
char *OglLibPath="opengl32.dll";
#endif
#ifdef __unix__
char *OglLibPath="libGL.so";
#endif
#ifdef macintosh
char *OglLibPath = NULL;
#endif
int ogl_rt_loaded=0;
int ogl_init_load_library(void)
{
int retcode=0;
if (!ogl_rt_loaded){
int t;
if ((t=FindArg("-gl_library")))
OglLibPath=Args[t+1];
retcode = OpenGL_LoadLibrary(true);
if(retcode)
{
mprintf((0,"Opengl loaded ok\n"));
if(!glEnd)
{
Error("Opengl: Functions not imported\n");
}
}else{
Error("Opengl: error loading %s\n", OglLibPath? OglLibPath : SDL_GetError());
}
ogl_rt_loaded=1;
}
return retcode;
}
#endif
int gr_init()
{
int mode = SM(640,480);
int retcode, t, glt = 0;
// Only do this function once!
if (gr_installed==1)
return -1;
#ifdef OGL_RUNTIME_LOAD
ogl_init_load_library();
#endif
#ifdef GR_SUPPORTS_FULLSCREEN_TOGGLE
if (FindArg("-gl_voodoo")){
ogl_voodoohack=1;
gr_toggle_fullscreen();
}
// if (FindArg("-fullscreen"))
if (!(FindArg("-window"))) // ZICO - from window to fullscreen
gr_toggle_fullscreen();
#endif
if ((glt=FindArg("-gl_alttexmerge")))
ogl_alttexmerge=1;
if ((t=FindArg("-gl_stdtexmerge")))
if (t>=glt)//allow overriding of earlier args
ogl_alttexmerge=0;
if ((glt = FindArg("-gl_16bittextures")))
{
ogl_rgba_internalformat = GL_RGB5_A1;
ogl_rgb_internalformat = GL_RGB5;
}
if ((glt=FindArg("-gl_mipmap"))){
GL_texmagfilt=GL_LINEAR;
GL_texminfilt=GL_LINEAR_MIPMAP_NEAREST;
}
if ((glt=FindArg("-gl_trilinear")))
{
GL_texmagfilt = GL_LINEAR;
GL_texminfilt = GL_LINEAR_MIPMAP_LINEAR;
}
if ((t=FindArg("-gl_simple"))){
if (t>=glt){//allow overriding of earlier args
glt=t;
GL_texmagfilt=GL_NEAREST;
GL_texminfilt=GL_NEAREST;
}
}
if ((t=FindArg("-gl_texmagfilt")) || (t=FindArg("-gl_texmagfilter"))){
if (t>=glt)//allow overriding of earlier args
GL_texmagfilt=ogl_atotexfilti(Args[t+1],0);
}
if ((t=FindArg("-gl_texminfilt")) || (t=FindArg("-gl_texminfilter"))){
if (t>=glt)//allow overriding of earlier args
GL_texminfilt=ogl_atotexfilti(Args[t+1],1);
}
GL_needmipmaps=ogl_testneedmipmaps(GL_texminfilt);
if ((t = FindArg("-gl_anisotropy")) || (t = FindArg("-gl_anisotropic")))
{
GL_texanisofilt=atof(Args[t + 1]);
}
mprintf((0,"gr_init: texmagfilt:%x texminfilt:%x needmipmaps=%i anisotropic:%f\n",GL_texmagfilt,GL_texminfilt,GL_needmipmaps,GL_texanisofilt));
if ((t=FindArg("-gl_vidmem"))){
ogl_mem_target=atoi(Args[t+1])*1024*1024;
}
if ((t=FindArg("-gl_reticle"))){
gl_reticle=atoi(Args[t+1]);
}
if (FindArg("-gl_transparency"))
glalpha_effects=1;
//printf("ogl_mem_target=%i\n",ogl_mem_target);
ogl_init();//platform specific initialization
ogl_init_texture_list_internal();
MALLOC( grd_curscreen,grs_screen,1 );
memset( grd_curscreen, 0, sizeof(grs_screen));
grd_curscreen->sc_canvas.cv_bitmap.bm_data = NULL;
// Set the mode.
if ((retcode=gr_set_mode(mode)))
{
return retcode;
}
grd_curscreen->sc_canvas.cv_color = 0;
grd_curscreen->sc_canvas.cv_drawmode = 0;
grd_curscreen->sc_canvas.cv_font = NULL;
grd_curscreen->sc_canvas.cv_font_fg_color = 0;
grd_curscreen->sc_canvas.cv_font_bg_color = 0;
gr_set_current_canvas( &grd_curscreen->sc_canvas );
ogl_init_pixel_buffers(256, 128); // for gamefont_init
gr_installed = 1;
atexit(gr_close);
return 0;
}
void gr_close()
{
// mprintf((0,"ogl init: %s %s %s - %s\n",glGetString(GL_VENDOR),glGetString(GL_RENDERER),glGetString(GL_VERSION),glGetString,(GL_EXTENSIONS)));
ogl_brightness_r = ogl_brightness_g = ogl_brightness_b = 0;
ogl_setbrightness_internal();
ogl_close();//platform specific code
if (grd_curscreen){
if (grd_curscreen->sc_canvas.cv_bitmap.bm_data)
d_free(grd_curscreen->sc_canvas.cv_bitmap.bm_data);
d_free(grd_curscreen);
}
ogl_close_pixel_buffers();
#ifdef OGL_RUNTIME_LOAD
if (ogl_rt_loaded)
OpenGL_LoadLibrary(false);
#endif
}
extern int r_upixelc;
void ogl_upixelc(int x, int y, int c){
r_upixelc++;
// printf("gr_upixelc(%i,%i,%i)%i\n",x,y,c,Function_mode==FMODE_GAME);
// if(Function_mode != FMODE_GAME){
// grd_curcanv->cv_bitmap.bm_data[y*grd_curscreen->sc_canvas.cv_bitmap.bm_w+x]=c;
// }else{
OGL_DISABLE(TEXTURE_2D);
glPointSize(grd_curscreen->sc_w/320);
glBegin(GL_POINTS);
// glBegin(GL_LINES);
// ogl_pal=gr_current_pal;
glColor3f(CPAL2Tr(c),CPAL2Tg(c),CPAL2Tb(c));
// ogl_pal=gr_palette;
glVertex2f((x + grd_curcanv->cv_bitmap.bm_x + 0.5) / (float)last_width, 1.0 - (y + grd_curcanv->cv_bitmap.bm_y + 0.5) / (float)last_height);
// glVertex2f(x/((float)last_width+1),1.0-y/((float)last_height+1));
glEnd();
// }
}
void ogl_urect(int left,int top,int right,int bot){
GLfloat xo,yo,xf,yf;
int c=COLOR;
xo=(left+grd_curcanv->cv_bitmap.bm_x)/(float)last_width;
xf = (right + 1 + grd_curcanv->cv_bitmap.bm_x) / (float)last_width;
yo=1.0-(top+grd_curcanv->cv_bitmap.bm_y)/(float)last_height;
yf = 1.0 - (bot + 1 + grd_curcanv->cv_bitmap.bm_y) / (float)last_height;
OGL_DISABLE(TEXTURE_2D);
if (Gr_scanline_darkening_level >= GR_FADE_LEVELS)
glColor3f(CPAL2Tr(c), CPAL2Tg(c), CPAL2Tb(c));
else
glColor4f(CPAL2Tr(c), CPAL2Tg(c), CPAL2Tb(c), 1.0 - (float)Gr_scanline_darkening_level / ((float)GR_FADE_LEVELS - 1.0));
glBegin(GL_QUADS);
glVertex2f(xo,yo);
glVertex2f(xo,yf);
glVertex2f(xf,yf);
glVertex2f(xf,yo);
glEnd();
}
void ogl_ulinec(int left,int top,int right,int bot,int c){
GLfloat xo,yo,xf,yf;
xo = (left + grd_curcanv->cv_bitmap.bm_x + 0.5) / (float)last_width;
xf = (right + grd_curcanv->cv_bitmap.bm_x + 0.5) / (float)last_width;
yo = 1.0 - (top + grd_curcanv->cv_bitmap.bm_y + 0.5) / (float)last_height;
yf = 1.0 - (bot + grd_curcanv->cv_bitmap.bm_y + 0.5) / (float)last_height;
OGL_DISABLE(TEXTURE_2D);
glColor3f(CPAL2Tr(c),CPAL2Tg(c),CPAL2Tb(c));
glBegin(GL_LINES);
glVertex2f(xo,yo);
glVertex2f(xf,yf);
glEnd();
}
GLfloat last_r=0, last_g=0, last_b=0;
int do_pal_step=0;
void ogl_do_palfx(void){
// GLfloat r,g,b,a;
OGL_DISABLE(TEXTURE_2D);
if (gr_palette_faded_out){
/* glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);*/
glColor3f(0,0,0);
// r=g=b=0.0;a=1.0;
}else{
if (do_pal_step){
//glBlendFunc(GL_SRC_COLOR, GL_DST_COLOR);
glEnable(GL_BLEND);
glBlendFunc(GL_ONE,GL_ONE);
glColor3f(last_r,last_g,last_b);
// r=f2fl(last_r);g=f2fl(last_g);b=f2fl(last_b);a=0.5;
}else
return;
}
glBegin(GL_QUADS);
glVertex2f(0,0);
glVertex2f(0,1);
glVertex2f(1,1);
glVertex2f(1,0);
glEnd();
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
}
void gr_palette_clear()
{
gr_palette_faded_out=1;
}
int ogl_brightness_ok = 0;
int ogl_setgammaramp_ok = 0;
int ogl_brightness_r = 0, ogl_brightness_g = 0, ogl_brightness_b = 0;
static int old_b_r = 0, old_b_g = 0, old_b_b = 0;
void gr_palette_step_up(int r, int g, int b)
{
if (gr_palette_faded_out)
return;
old_b_r = ogl_brightness_r;
old_b_g = ogl_brightness_g;
old_b_b = ogl_brightness_b;
ogl_brightness_r = max(r + gr_palette_gamma, 0);
ogl_brightness_g = max(g + gr_palette_gamma, 0);
ogl_brightness_b = max(b + gr_palette_gamma, 0);
if (ogl_setgammaramp_ok &&
(old_b_r != ogl_brightness_r ||
old_b_g != ogl_brightness_g ||
old_b_b != ogl_brightness_b))
ogl_brightness_ok = !ogl_setbrightness_internal();
if (!ogl_setgammaramp_ok || !ogl_brightness_ok)
{
last_r = ogl_brightness_r / 63.0;
last_g = ogl_brightness_g / 63.0;
last_b = ogl_brightness_b / 63.0;
do_pal_step = (r || g || b || gr_palette_gamma);
}
else
{
do_pal_step = 0;
}
}
//added on 980913 by adb to fix palette problems
// need a min without side effects...
#undef min
static inline int min(int x, int y) { return x < y ? x : y; }
//end changes by adb
void gr_palette_load( ubyte *pal )
{
int i;//, j;
for (i=0; i<768; i++ ) {
gr_current_pal[i] = pal[i];
if (gr_current_pal[i] > 63) gr_current_pal[i] = 63;
}
//palette = screen->format->palette;
gr_palette_faded_out=0;
gr_palette_step_up(0, 0, 0); // make ogl_setbrightness_internal get run so that menus get brightened too.
init_computed_colors();
ogl_init_shared_palette();
}
int gr_palette_fade_out(ubyte *pal, int nsteps, int allow_keys)
{
gr_palette_faded_out=1;
return 0;
}
int gr_palette_fade_in(ubyte *pal, int nsteps, int allow_keys)
{
gr_palette_faded_out=0;
return 0;
}
void gr_palette_read(ubyte * pal)
{
int i;
for (i=0; i<768; i++ ) {
pal[i]=gr_current_pal[i];
if (pal[i] > 63) pal[i] = 63;
}
}
#define GL_BGR_EXT 0x80E0
typedef struct {
unsigned char TGAheader[12];
unsigned char header[6];
} TGA_header;
//writes out an uncompressed RGB .tga file
//if we got really spiffy, we could optionally link in libpng or something, and use that.
void write_bmp(char *savename,int w,int h,unsigned char *buf){
PHYSFS_file* TGAFile;
TGA_header TGA;
GLbyte HeightH,HeightL,WidthH,WidthL;
buf = (unsigned char*)calloc(w*h*3,sizeof(unsigned char));
glReadPixels(0,0,w,h,GL_BGR_EXT,GL_UNSIGNED_BYTE,buf);
TGAFile = PHYSFSX_openWriteBuffered(savename);
HeightH = (GLbyte)(h / 256);
HeightL = (GLbyte)(h % 256);
WidthH = (GLbyte)(w / 256);
WidthL = (GLbyte)(w % 256);
// Write TGA Header
TGA.TGAheader[0] = 0;
TGA.TGAheader[1] = 0;
TGA.TGAheader[2] = 2;
TGA.TGAheader[3] = 0;
TGA.TGAheader[4] = 0;
TGA.TGAheader[5] = 0;
TGA.TGAheader[6] = 0;
TGA.TGAheader[7] = 0;
TGA.TGAheader[8] = 0;
TGA.TGAheader[9] = 0;
TGA.TGAheader[10] = 0;
TGA.TGAheader[11] = 0;
TGA.header[0] = (GLbyte) WidthL;
TGA.header[1] = (GLbyte) WidthH;
TGA.header[2] = (GLbyte) HeightL;
TGA.header[3] = (GLbyte) HeightH;
TGA.header[4] = (GLbyte) 24;
TGA.header[5] = 0;
PHYSFS_write(TGAFile,&TGA,sizeof(TGA_header),1);
PHYSFS_write(TGAFile,buf,w*h*3*sizeof(unsigned char),1);
PHYSFS_close(TGAFile);
free(buf);
}
void save_screen_shot(int automap_flag)
{
// fix t1;
char message[100];
static int savenum=0;
char savename[13+sizeof(SCRNS_DIR)];
unsigned char *buf;
if (!ogl_readpixels_ok){
if (!automap_flag)
hud_message(MSGC_GAME_FEEDBACK,"glReadPixels not supported on your configuration");
return;
}
stop_time();
if (!cfexist(SCRNS_DIR))
PHYSFS_mkdir(SCRNS_DIR); //try making directory
//added/changed on 10/31/98 by Victor Rachels to fix overwrite each new game
do
{
if (savenum == 9999)
savenum = 0;
sprintf(savename, "%sscrn%04d.tga",SCRNS_DIR, savenum++);
} while (PHYSFS_exists(savename));
sprintf( message, "%s '%s'", TXT_DUMPING_SCREEN, savename );
//end this section addition/change - Victor Rachels
if (automap_flag) {
} else {
hud_message(MSGC_GAME_FEEDBACK,message);
}
buf = malloc(grd_curscreen->sc_w*grd_curscreen->sc_h*3);
glReadBuffer(GL_FRONT);
// glReadPixels(0,0,grd_curscreen->sc_w,grd_curscreen->sc_h,GL_RGB,GL_UNSIGNED_BYTE,buf);
write_bmp(savename,grd_curscreen->sc_w,grd_curscreen->sc_h,buf);
free(buf);
key_flush();
start_time();
}
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