96 lines
2.5 KiB
C
Executable file
96 lines
2.5 KiB
C
Executable file
//opengl platform specific functions for SDL - Added 2000/06/19 Matthew Mueller
|
|
#include <SDL/SDL.h>
|
|
#include "ogl_init.h"
|
|
#include "vers_id.h"
|
|
#include "error.h"
|
|
#include "u_mem.h"
|
|
#include "args.h"
|
|
|
|
static int curx=-1,cury=-1,curfull=0;
|
|
|
|
void ogl_do_fullscreen_internal(void){
|
|
ogl_init_window(curx,cury);
|
|
}
|
|
|
|
static Uint16 gammaramp[512];
|
|
|
|
static void init_gammaramp(void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < 256; ++i)
|
|
gammaramp[i] = i * 256;
|
|
for (i = 256; i < 512; ++i)
|
|
gammaramp[i] = 0xffff;
|
|
}
|
|
|
|
int ogl_setbrightness_internal(void)
|
|
{
|
|
return SDL_SetGammaRamp(gammaramp + ogl_brightness_r * 4,
|
|
gammaramp + ogl_brightness_g * 4,
|
|
gammaramp + ogl_brightness_b * 4
|
|
);
|
|
}
|
|
|
|
void ogl_swap_buffers_internal(void){
|
|
SDL_GL_SwapBuffers();
|
|
}
|
|
int ogl_init_window(int x, int y){
|
|
if (gl_initialized){
|
|
if (x==curx && y==cury && curfull==ogl_fullscreen)
|
|
return 0;
|
|
#ifdef __LINUX__
|
|
if (ogl_fullscreen || curfull)
|
|
#endif
|
|
ogl_smash_texture_list_internal();//if we are or were fullscreen, changing vid mode will invalidate current textures
|
|
}
|
|
SDL_WM_SetCaption(DESCENT_VERSION, "Descent");
|
|
|
|
if (!SDL_SetVideoMode(x,y, 16, SDL_OPENGL | (ogl_fullscreen?SDL_FULLSCREEN:0))) {
|
|
Error("Could not set %dx%dx16 opengl video mode\n",x,y);
|
|
}
|
|
|
|
SDL_ShowCursor(0);
|
|
|
|
curx=x;cury=y;curfull=ogl_fullscreen;
|
|
gl_initialized=1;
|
|
|
|
return 0;
|
|
}
|
|
void ogl_destroy_window(void){
|
|
if (gl_initialized){
|
|
ogl_smash_texture_list_internal();
|
|
SDL_ShowCursor(1);
|
|
//gl_initialized=0;
|
|
//well..SDL doesn't really let you kill the window.. so we just need to wait for sdl_quit
|
|
}
|
|
return;
|
|
}
|
|
|
|
void ogl_init(void){
|
|
int t;
|
|
if ((t=FindArg("-gl_red")))
|
|
SDL_GL_SetAttribute( SDL_GL_RED_SIZE, atoi(Args[t+1]) );
|
|
if ((t=FindArg("-gl_green")))
|
|
SDL_GL_SetAttribute( SDL_GL_GREEN_SIZE, atoi(Args[t+1]) );
|
|
if ((t=FindArg("-gl_blue")))
|
|
SDL_GL_SetAttribute( SDL_GL_BLUE_SIZE, atoi(Args[t+1]) );
|
|
if ((t=FindArg("-gl_alpha")))
|
|
SDL_GL_SetAttribute( SDL_GL_ALPHA_SIZE, atoi(Args[t+1]) );
|
|
if ((t=FindArg("-gl_buffer")))
|
|
SDL_GL_SetAttribute( SDL_GL_BUFFER_SIZE, atoi(Args[t+1]) );
|
|
|
|
SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE,16);
|
|
SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE,0);
|
|
SDL_GL_SetAttribute(SDL_GL_ACCUM_RED_SIZE,0);
|
|
SDL_GL_SetAttribute(SDL_GL_ACCUM_GREEN_SIZE,0);
|
|
SDL_GL_SetAttribute(SDL_GL_ACCUM_BLUE_SIZE,0);
|
|
SDL_GL_SetAttribute(SDL_GL_ACCUM_ALPHA_SIZE,0);
|
|
SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER,1);
|
|
|
|
init_gammaramp();
|
|
}
|
|
void ogl_close(void){
|
|
ogl_destroy_window();
|
|
}
|