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70 lines
1.3 KiB
C++
70 lines
1.3 KiB
C++
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#include "Base.h"
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#if BBGE_BUILD_OPENGL_DYNAMIC
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#include "RenderBase.h"
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#include "GLLoad.h"
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#include <sstream>
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#ifdef GLAPIENTRY
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#undef GLAPIENTRY
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#endif
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#ifdef BBGE_BUILD_WINDOWS
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#define GLAPIENTRY __stdcall
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#else
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#define GLAPIENTRY
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#endif
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unsigned g_dbg_numRenderCalls = 0; // extern
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#ifdef BBGE_BUILD_OPENGL_DYNAMIC
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#define GL_FUNC(ret,fn,params,call,rt) \
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extern "C" { \
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static ret (GLAPIENTRY *p##fn) params = NULL; \
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ret GLAPIENTRY fn params { ++g_dbg_numRenderCalls; rt p##fn call; } \
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}
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#include "OpenGLStubs.h"
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#undef GL_FUNC
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static bool lookup_glsym(const char *funcname, void **func)
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{
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*func = SDL_GL_GetProcAddress(funcname);
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if (*func == NULL)
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{
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std::ostringstream os;
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os << "Failed to find OpenGL symbol \"" << funcname << "\"\n";
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errorLog(os.str());
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return false;
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}
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return true;
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}
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bool lookup_all_glsyms()
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{
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bool retval = true;
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#define GL_FUNC(ret,fn,params,call,rt) \
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if (!lookup_glsym(#fn, (void **) &p##fn)) retval = false;
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#include "OpenGLStubs.h"
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#undef GL_FUNC
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return retval;
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}
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#endif
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void unload_all_glsyms()
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{
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#if BBGE_BUILD_OPENGL_DYNAMIC
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// reset all the entry points to NULL, so we know exactly what happened
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// if we call a GL function after shutdown.
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#define GL_FUNC(ret,fn,params,call,rt) \
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p##fn = NULL;
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#include "OpenGLStubs.h"
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#undef GL_FUNC
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#endif
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}
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#endif
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