Serious-Engine/Sources/Engine/Graphics/SDL/SDLOpenGL.cpp

105 lines
2.6 KiB
C++

/* Copyright (c) 2002-2012 Croteam Ltd. All rights reserved. */
#include <Engine/Engine.h>
#include "SDL.h"
static void FailFunction_t(const char *strName) {
ThrowF_t(TRANS("Required function %s not found."), strName);
}
static void SetFunctionPointers_t(HINSTANCE hiOGL)
{
const char *strName;
// get gl function pointers
#define DLLFUNCTION(dll, output, name, inputs, params, required) \
strName = #name; \
p##name = (output (__stdcall*) inputs) SDL_GL_GetProcAddress(strName); \
if( required && p##name == NULL) FailFunction_t(strName);
#include "Engine/Graphics/gl_functions.h"
#undef DLLFUNCTION
}
BOOL CGfxLibrary::InitDriver_OGL(BOOL init3dfx)
{
ASSERT( gl_hiDriver==NONE);
if (SDL_Init(SDL_INIT_VIDEO) == -1) {
CPrintF( TRANS("Error starting OpenGL: %s\n"), SDL_GetError());
return(FALSE);
}
SDL_EnableUNICODE(1);
SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL);
// !!! FIXME: Is it safe to add new cvars for a specific platform?
const char *envlib = getenv("SERIOUS_GLLIBRARY");
CTString strDriverFileName = ((envlib) ? envlib : "libGL.so.1");
if (SDL_GL_LoadLibrary(strDriverFileName) == -1) {
CPrintF(TRANSV("Cannot load OpenGL driver '%s'"), (const char *) strDriverFileName);
SDL_QuitSubSystem(SDL_INIT_VIDEO);
return(FALSE);
}
// prepare functions
SetFunctionPointers_t(gl_hiDriver);
// done
return TRUE;
}
void CGfxLibrary::PlatformEndDriver_OGL(void)
{
SDL_QuitSubSystem(SDL_INIT_VIDEO);
}
void *CGfxLibrary::OGL_GetProcAddress(const char *procname)
{
return(SDL_GL_GetProcAddress(procname));
}
// prepare current viewport for rendering thru OpenGL
BOOL CGfxLibrary::SetCurrentViewport_OGL(CViewPort *pvp)
{
// if must init entire opengl
if( gl_ulFlags & GLF_INITONNEXTWINDOW)
{
gl_ulFlags &= ~GLF_INITONNEXTWINDOW;
// reopen window
pvp->CloseCanvas();
pvp->OpenCanvas();
// init now
gl_pvpActive = pvp; // remember as current viewport (must do that BEFORE InitContext)
go_hglRC = (void *) 0x0001; // !!! FIXME : This needs to be not null, but this is a hack.
// init now
InitContext_OGL();
gl_ulFlags |= GLF_HASACCELERATION; // might be a lie, though...
pvp->vp_ctDisplayChanges = gl_ctDriverChanges;
return TRUE;
}
// if window was not set for this driver
if( pvp->vp_ctDisplayChanges<gl_ctDriverChanges)
{
// reopen window
pvp->CloseCanvas();
pvp->OpenCanvas();
// set it
pvp->vp_ctDisplayChanges = gl_ctDriverChanges;
}
// remember as current window
gl_pvpActive = pvp;
return TRUE;
}
// end of SDLOpenGL.cpp ...