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Aquaria/BBGE/GLLoad.cpp
fgenesis 49b9e0f05a Rework & cleanup CMake project files 
- Building with CMake for development is now actually sane
- Split deps into projects and extra files
- Building against external deps should still work but needs testing
- Can now build out of the box without further adjustments as long as SDL(2) is found properly
- Build Lua in C++ mode (so it can use exceptions instead of setjmp/longjmp)
  - Unfortunately we need to enable exceptions for this :(

- Remove these defines:
  * AQUARIA_BUILD_SCENEEDITOR (now always on)
  * AQUARIA_BUILD_CONSOLE (now always on)
  * BBGE_BUILD_ACHIEVEMENTS_INTERNAL (now always on unless BBGE_BUILD_STEAMWORKS is defined)
  * BBGE_BUILD_OPENGL_DYNAMIC (now always on, define BBGE_BUILD_OPENGL_STATIC if needed)
  * BBGE_BUILD_FMOD_OPENAL_BRIDGE (now always on)
- BBGE_BUILD_STEAMWORKS is not actually implemented (any volunteers?)
- Prepare later removal of SDL & the old vc90 project from the repo. See #74 for extra notes.
2022-04-07 02:38:39 +02:00

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#include "GLLoad.h"
#ifdef BBGE_BUILD_OPENGL_STATIC
bool lookup_all_glsyms() { return true; }
bool void unload_all_glsyms() { return false; }
#else
#include "Base.h"
#include "RenderBase.h"
#include <sstream>
#ifdef GLAPIENTRY
#undef GLAPIENTRY
#endif
#ifdef BBGE_BUILD_WINDOWS
#define GLAPIENTRY __stdcall
#else
#define GLAPIENTRY
#endif
#include <GL/glext.h>
PFNGLGENERATEMIPMAPEXTPROC glGenerateMipmapEXT = NULL;
// GL_ARB_shader_objects
PFNGLCREATEPROGRAMOBJECTARBPROC glCreateProgramObjectARB = NULL;
PFNGLDELETEOBJECTARBPROC glDeleteObjectARB = NULL;
PFNGLUSEPROGRAMOBJECTARBPROC glUseProgramObjectARB = NULL;
PFNGLCREATESHADEROBJECTARBPROC glCreateShaderObjectARB = NULL;
PFNGLSHADERSOURCEARBPROC glShaderSourceARB = NULL;
PFNGLCOMPILESHADERARBPROC glCompileShaderARB = NULL;
PFNGLGETOBJECTPARAMETERIVARBPROC glGetObjectParameterivARB = NULL;
PFNGLATTACHOBJECTARBPROC glAttachObjectARB = NULL;
PFNGLGETINFOLOGARBPROC glGetInfoLogARB = NULL;
PFNGLLINKPROGRAMARBPROC glLinkProgramARB = NULL;
PFNGLGETUNIFORMLOCATIONARBPROC glGetUniformLocationARB = NULL;
PFNGLGETACTIVEUNIFORMARBPROC glGetActiveUniformARB = NULL;
PFNGLUNIFORM1FVARBPROC glUniform1fvARB = NULL;
PFNGLUNIFORM2FVARBPROC glUniform2fvARB = NULL;
PFNGLUNIFORM3FVARBPROC glUniform3fvARB = NULL;
PFNGLUNIFORM4FVARBPROC glUniform4fvARB = NULL;
PFNGLUNIFORM1IVARBPROC glUniform1ivARB = NULL;
PFNGLUNIFORM2IVARBPROC glUniform2ivARB = NULL;
PFNGLUNIFORM3IVARBPROC glUniform3ivARB = NULL;
PFNGLUNIFORM4IVARBPROC glUniform4ivARB = NULL;
// GL_ARB_shader_objects and related
PFNGLISRENDERBUFFEREXTPROC glIsRenderbufferEXT = NULL;
PFNGLBINDRENDERBUFFEREXTPROC glBindRenderbufferEXT = NULL;
PFNGLDELETERENDERBUFFERSEXTPROC glDeleteRenderbuffersEXT = NULL;
PFNGLGENRENDERBUFFERSEXTPROC glGenRenderbuffersEXT = NULL;
PFNGLRENDERBUFFERSTORAGEEXTPROC glRenderbufferStorageEXT = NULL;
PFNGLGETRENDERBUFFERPARAMETERIVEXTPROC glGetRenderbufferParameterivEXT = NULL;
PFNGLISFRAMEBUFFEREXTPROC glIsFramebufferEXT = NULL;
PFNGLBINDFRAMEBUFFEREXTPROC glBindFramebufferEXT = NULL;
PFNGLDELETEFRAMEBUFFERSEXTPROC glDeleteFramebuffersEXT = NULL;
PFNGLGENFRAMEBUFFERSEXTPROC glGenFramebuffersEXT = NULL;
PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC glCheckFramebufferStatusEXT = NULL;
PFNGLFRAMEBUFFERTEXTURE1DEXTPROC glFramebufferTexture1DEXT = NULL;
PFNGLFRAMEBUFFERTEXTURE2DEXTPROC glFramebufferTexture2DEXT = NULL;
PFNGLFRAMEBUFFERTEXTURE3DEXTPROC glFramebufferTexture3DEXT = NULL;
PFNGLFRAMEBUFFERRENDERBUFFEREXTPROC glFramebufferRenderbufferEXT = NULL;
PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVEXTPROC glGetFramebufferAttachmentParameterivEXT = NULL;
// extern
unsigned g_dbg_numRenderCalls = 0;
bool g_has_GL_GENERATE_MIPMAP = false;
#define GL_FUNC(ret,fn,params,call,rt) \
extern "C" { \
static ret (GLAPIENTRY *p##fn) params = NULL; \
ret GLAPIENTRY fn params { ++g_dbg_numRenderCalls; rt p##fn call; } \
}
#include "OpenGLStubs.h"
#undef GL_FUNC
static bool lookup_glsym(const char *funcname, void **func)
{
*func = SDL_GL_GetProcAddress(funcname);
if (*func == NULL)
{
std::ostringstream os;
os << "Failed to find OpenGL symbol \"" << funcname << "\"\n";
errorLog(os.str());
return false;
}
return true;
}
bool lookup_all_glsyms()
{
bool retval = true;
#define GL_FUNC(ret,fn,params,call,rt) \
if (!lookup_glsym(#fn, (void **) &p##fn)) retval = false;
#include "OpenGLStubs.h"
#undef GL_FUNC
if(const char *ver = (const char*)glGetString(GL_VERSION))
{
unsigned major = 0, minor = 0;
sscanf(ver, "%u.%u", &major, &minor);
std::ostringstream os;
os << "Detected OpenGL version: " << major << "." << minor;
debugLog(os.str());
// GL >= 1.4 and <= 2.x has GL_GENERATE_MIPMAP
if(major < 3 && (major > 1 || (major == 1 && minor >= 4)))
g_has_GL_GENERATE_MIPMAP = true;
}
// optional functions
// mipmaps
glGenerateMipmapEXT = (PFNGLGENERATEMIPMAPEXTPROC)SDL_GL_GetProcAddress("glGenerateMipmapEXT");
{
std::ostringstream os;
os << "glGenerateMipmapEXT = " << glGenerateMipmapEXT;
debugLog(os.str());
}
// framebuffer
glIsRenderbufferEXT = (PFNGLISRENDERBUFFEREXTPROC)SDL_GL_GetProcAddress("glIsRenderbufferEXT");
glBindRenderbufferEXT = (PFNGLBINDRENDERBUFFEREXTPROC)SDL_GL_GetProcAddress("glBindRenderbufferEXT");
glDeleteRenderbuffersEXT = (PFNGLDELETERENDERBUFFERSEXTPROC)SDL_GL_GetProcAddress("glDeleteRenderbuffersEXT");
glGenRenderbuffersEXT = (PFNGLGENRENDERBUFFERSEXTPROC)SDL_GL_GetProcAddress("glGenRenderbuffersEXT");
glRenderbufferStorageEXT = (PFNGLRENDERBUFFERSTORAGEEXTPROC)SDL_GL_GetProcAddress("glRenderbufferStorageEXT");
glGetRenderbufferParameterivEXT = (PFNGLGETRENDERBUFFERPARAMETERIVEXTPROC)SDL_GL_GetProcAddress("glGetRenderbufferParameterivEXT");
glIsFramebufferEXT = (PFNGLISFRAMEBUFFEREXTPROC)SDL_GL_GetProcAddress("glIsFramebufferEXT");
glBindFramebufferEXT = (PFNGLBINDFRAMEBUFFEREXTPROC)SDL_GL_GetProcAddress("glBindFramebufferEXT");
glDeleteFramebuffersEXT = (PFNGLDELETEFRAMEBUFFERSEXTPROC)SDL_GL_GetProcAddress("glDeleteFramebuffersEXT");
glGenFramebuffersEXT = (PFNGLGENFRAMEBUFFERSEXTPROC)SDL_GL_GetProcAddress("glGenFramebuffersEXT");
glCheckFramebufferStatusEXT = (PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC)SDL_GL_GetProcAddress("glCheckFramebufferStatusEXT");
glFramebufferTexture1DEXT = (PFNGLFRAMEBUFFERTEXTURE1DEXTPROC)SDL_GL_GetProcAddress("glFramebufferTexture1DEXT");
glFramebufferTexture2DEXT = (PFNGLFRAMEBUFFERTEXTURE2DEXTPROC)SDL_GL_GetProcAddress("glFramebufferTexture2DEXT");
glFramebufferTexture3DEXT = (PFNGLFRAMEBUFFERTEXTURE3DEXTPROC)SDL_GL_GetProcAddress("glFramebufferTexture3DEXT");
glFramebufferRenderbufferEXT = (PFNGLFRAMEBUFFERRENDERBUFFEREXTPROC)SDL_GL_GetProcAddress("glFramebufferRenderbufferEXT");
glGetFramebufferAttachmentParameterivEXT = (PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVEXTPROC)SDL_GL_GetProcAddress("glGetFramebufferAttachmentParameterivEXT");
// shaders
glCreateProgramObjectARB = (PFNGLCREATEPROGRAMOBJECTARBPROC)SDL_GL_GetProcAddress("glCreateProgramObjectARB");
glDeleteObjectARB = (PFNGLDELETEOBJECTARBPROC)SDL_GL_GetProcAddress("glDeleteObjectARB");
glUseProgramObjectARB = (PFNGLUSEPROGRAMOBJECTARBPROC)SDL_GL_GetProcAddress("glUseProgramObjectARB");
glCreateShaderObjectARB = (PFNGLCREATESHADEROBJECTARBPROC)SDL_GL_GetProcAddress("glCreateShaderObjectARB");
glShaderSourceARB = (PFNGLSHADERSOURCEARBPROC)SDL_GL_GetProcAddress("glShaderSourceARB");
glCompileShaderARB = (PFNGLCOMPILESHADERARBPROC)SDL_GL_GetProcAddress("glCompileShaderARB");
glGetObjectParameterivARB = (PFNGLGETOBJECTPARAMETERIVARBPROC)SDL_GL_GetProcAddress("glGetObjectParameterivARB");
glAttachObjectARB = (PFNGLATTACHOBJECTARBPROC)SDL_GL_GetProcAddress("glAttachObjectARB");
glGetInfoLogARB = (PFNGLGETINFOLOGARBPROC)SDL_GL_GetProcAddress("glGetInfoLogARB");
glLinkProgramARB = (PFNGLLINKPROGRAMARBPROC)SDL_GL_GetProcAddress("glLinkProgramARB");
glGetUniformLocationARB = (PFNGLGETUNIFORMLOCATIONARBPROC)SDL_GL_GetProcAddress("glGetUniformLocationARB");
glGetActiveUniformARB = (PFNGLGETACTIVEUNIFORMARBPROC)SDL_GL_GetProcAddress("glGetActiveUniformARB");
glUniform1fvARB = (PFNGLUNIFORM1FVARBPROC)SDL_GL_GetProcAddress("glUniform1fvARB");
glUniform2fvARB = (PFNGLUNIFORM2FVARBPROC)SDL_GL_GetProcAddress("glUniform2fvARB");
glUniform3fvARB = (PFNGLUNIFORM3FVARBPROC)SDL_GL_GetProcAddress("glUniform3fvARB");
glUniform4fvARB = (PFNGLUNIFORM4FVARBPROC)SDL_GL_GetProcAddress("glUniform4fvARB");
glUniform1ivARB = (PFNGLUNIFORM1IVARBPROC)SDL_GL_GetProcAddress("glUniform1ivARB");
glUniform2ivARB = (PFNGLUNIFORM2IVARBPROC)SDL_GL_GetProcAddress("glUniform2ivARB");
glUniform3ivARB = (PFNGLUNIFORM3IVARBPROC)SDL_GL_GetProcAddress("glUniform3ivARB");
glUniform4ivARB = (PFNGLUNIFORM4IVARBPROC)SDL_GL_GetProcAddress("glUniform4ivARB");
return retval;
}
void unload_all_glsyms()
{
// reset all the entry points to NULL, so we know exactly what happened
// if we call a GL function after shutdown.
#define GL_FUNC(ret,fn,params,call,rt) \
p##fn = NULL;
#include "OpenGLStubs.h"
#undef GL_FUNC
glGenerateMipmapEXT = NULL;
// set these back to NULL and reload them upon reinit, otherwise they
// might point to a bogus address when the shared library is reloaded.
glIsRenderbufferEXT = NULL;
glBindRenderbufferEXT = NULL;
glDeleteRenderbuffersEXT = NULL;
glGenRenderbuffersEXT = NULL;
glRenderbufferStorageEXT = NULL;
glGetRenderbufferParameterivEXT = NULL;
glIsFramebufferEXT = NULL;
glBindFramebufferEXT = NULL;
glDeleteFramebuffersEXT = NULL;
glGenFramebuffersEXT = NULL;
glCheckFramebufferStatusEXT = NULL;
glFramebufferTexture1DEXT = NULL;
glFramebufferTexture2DEXT = NULL;
glFramebufferTexture3DEXT = NULL;
glFramebufferRenderbufferEXT = NULL;
glGetFramebufferAttachmentParameterivEXT = NULL;
glCreateProgramObjectARB = NULL;
glDeleteObjectARB = NULL;
glUseProgramObjectARB = NULL;
glCreateShaderObjectARB = NULL;
glShaderSourceARB = NULL;
glCompileShaderARB = NULL;
glGetObjectParameterivARB = NULL;
glAttachObjectARB = NULL;
glGetInfoLogARB = NULL;
glLinkProgramARB = NULL;
glGetUniformLocationARB = NULL;
glGetActiveUniformARB = NULL;
glUniform1fvARB = NULL;
glUniform2fvARB = NULL;
glUniform3fvARB = NULL;
glUniform4fvARB = NULL;
glUniform1ivARB = NULL;
glUniform2ivARB = NULL;
glUniform3ivARB = NULL;
glUniform4ivARB = NULL;
}
#endif // BBGE_BUILD_OPENGL_STATIC
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