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- set up dynamic opengl load for windows

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This commit is contained in:
Rachael Alexanderson 2020-12-06 22:13:39 -05:00
parent 6ef8118b80
commit 5a0c84dd2d
4 changed files with 65 additions and 16 deletions
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1
src/CMakeLists.txt
View file

@ -101,7 +101,6 @@ if( WIN32 )
endif()
set( ZDOOM_LIBS
opengl32
wsock32
winmm
"${DX_dinput8_LIBRARY}"

8
src/common/platform/win32/gl_sysfb.cpp
View file

@ -52,6 +52,8 @@
extern HWND Window;
extern "C" PROC zd_wglGetProcAddress(LPCSTR name);
PFNWGLSWAPINTERVALEXTPROC myWglSwapIntervalExtProc;
//==========================================================================
@ -78,15 +80,15 @@ SystemGLFrameBuffer::SystemGLFrameBuffer(void *hMonitor, bool fullscreen) : Syst
HDC hDC = GetDC(Window);
const char *wglext = nullptr;
myWglSwapIntervalExtProc = (PFNWGLSWAPINTERVALEXTPROC)wglGetProcAddress("wglSwapIntervalEXT");
auto myWglGetExtensionsStringARB = (PFNWGLGETEXTENSIONSSTRINGARBPROC)wglGetProcAddress("wglGetExtensionsStringARB");
myWglSwapIntervalExtProc = (PFNWGLSWAPINTERVALEXTPROC)zd_wglGetProcAddress("wglSwapIntervalEXT");
auto myWglGetExtensionsStringARB = (PFNWGLGETEXTENSIONSSTRINGARBPROC)zd_wglGetProcAddress("wglGetExtensionsStringARB");
if (myWglGetExtensionsStringARB)
{
wglext = myWglGetExtensionsStringARB(hDC);
}
else
{
auto myWglGetExtensionsStringEXT = (PFNWGLGETEXTENSIONSSTRINGEXTPROC)wglGetProcAddress("wglGetExtensionsStringEXT");
auto myWglGetExtensionsStringEXT = (PFNWGLGETEXTENSIONSSTRINGEXTPROC)zd_wglGetProcAddress("wglGetExtensionsStringEXT");
if (myWglGetExtensionsStringEXT)
{
wglext = myWglGetExtensionsStringEXT();

29
src/common/platform/win32/win32glvideo.cpp
View file

@ -55,6 +55,13 @@
#include "gl_framebuffer.h"
extern "C" {
HGLRC zd_wglCreateContext(HDC Arg1);
BOOL zd_wglDeleteContext(HGLRC Arg1);
BOOL zd_wglMakeCurrent(HDC Arg1, HGLRC Arg2);
PROC zd_wglGetProcAddress(LPCSTR name);
}
EXTERN_CVAR(Int, vid_adapter)
EXTERN_CVAR(Bool, vid_hdr)
@ -74,7 +81,7 @@ CUSTOM_CVAR(Bool, vr_enable_quadbuffered, false, CVAR_ARCHIVE | CVAR_GLOBALCONFI
extern bool vid_hdr_active;
// these get used before GLEW is initialized so we have to use separate pointers with different names
PFNWGLCHOOSEPIXELFORMATARBPROC myWglChoosePixelFormatARB; // = (PFNWGLCHOOSEPIXELFORMATARBPROC)wglGetProcAddress("wglChoosePixelFormatARB");
PFNWGLCHOOSEPIXELFORMATARBPROC myWglChoosePixelFormatARB; // = (PFNWGLCHOOSEPIXELFORMATARBPROC)zd_wglGetProcAddress("wglChoosePixelFormatARB");
PFNWGLCREATECONTEXTATTRIBSARBPROC myWglCreateContextAttribsARB;
@ -224,15 +231,15 @@ bool Win32GLVideo::SetPixelFormat()
::SetPixelFormat(hDC, pixelFormat, &pfd);
hRC = wglCreateContext(hDC);
wglMakeCurrent(hDC, hRC);
hRC = zd_wglCreateContext(hDC);
zd_wglMakeCurrent(hDC, hRC);
myWglChoosePixelFormatARB = (PFNWGLCHOOSEPIXELFORMATARBPROC)wglGetProcAddress("wglChoosePixelFormatARB");
myWglCreateContextAttribsARB = (PFNWGLCREATECONTEXTATTRIBSARBPROC)wglGetProcAddress("wglCreateContextAttribsARB");
myWglChoosePixelFormatARB = (PFNWGLCHOOSEPIXELFORMATARBPROC)zd_wglGetProcAddress("wglChoosePixelFormatARB");
myWglCreateContextAttribsARB = (PFNWGLCREATECONTEXTATTRIBSARBPROC)zd_wglGetProcAddress("wglCreateContextAttribsARB");
// any extra stuff here?
wglMakeCurrent(NULL, NULL);
wglDeleteContext(hRC);
zd_wglMakeCurrent(NULL, NULL);
zd_wglDeleteContext(hRC);
ReleaseDC(dummy, hDC);
ShutdownDummy(dummy);
@ -436,7 +443,7 @@ bool Win32GLVideo::InitHardware(HWND Window, int multisample)
if (m_hRC == NULL && prof == WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB)
{
m_hRC = wglCreateContext(m_hDC);
m_hRC = zd_wglCreateContext(m_hDC);
if (m_hRC == NULL)
{
I_Error("R_OPENGL: Unable to create an OpenGL render context.\n");
@ -446,7 +453,7 @@ bool Win32GLVideo::InitHardware(HWND Window, int multisample)
if (m_hRC != NULL)
{
wglMakeCurrent(m_hDC, m_hRC);
zd_wglMakeCurrent(m_hDC, m_hRC);
return true;
}
}
@ -465,8 +472,8 @@ void Win32GLVideo::Shutdown()
{
if (m_hRC)
{
wglMakeCurrent(0, 0);
wglDeleteContext(m_hRC);
zd_wglMakeCurrent(0, 0);
zd_wglDeleteContext(m_hRC);
}
if (m_hDC) ReleaseDC(m_Window, m_hDC);
}

43
src/common/rendering/gl_load/gl_load.c
View file

@ -67,10 +67,51 @@ static int TestPointer(const PROC pTest)
return 1;
}
static HMODULE opengl32dll;
static HGLRC(WINAPI* createcontext)(HDC);
static BOOL(WINAPI* deletecontext)(HGLRC);
static BOOL(WINAPI* makecurrent)(HDC, HGLRC);
static PROC(WINAPI* getprocaddress)(LPCSTR name);
static void CheckOpenGL(void)
{
if (opengl32dll == 0)
{
opengl32dll = LoadLibrary(L"OpenGL32.DLL");
createcontext = (HGLRC(WINAPI*)(HDC)) GetProcAddress(opengl32dll, "wglCreateContext");
deletecontext = (BOOL(WINAPI*)(HGLRC)) GetProcAddress(opengl32dll, "wglDeleteContext");
makecurrent = (BOOL(WINAPI*)(HDC, HGLRC)) GetProcAddress(opengl32dll, "wglMakeCurrent");
getprocaddress = (PROC(WINAPI*)(LPCSTR)) GetProcAddress(opengl32dll, "wglGetProcAddress");
}
}
HGLRC zd_wglCreateContext(HDC dc)
{
CheckOpenGL();
return createcontext(dc);
}
BOOL zd_wglDeleteContext(HGLRC context)
{
CheckOpenGL();
return deletecontext(context);
}
BOOL zd_wglMakeCurrent(HDC dc, HGLRC context)
{
CheckOpenGL();
return makecurrent(dc, context);
}
PROC zd_wglGetProcAddress(LPCSTR name)
{
CheckOpenGL();
return getprocaddress(name);
}
static PROC WinGetProcAddress(const char *name)
{
HMODULE glMod = NULL;
PROC pFunc = wglGetProcAddress((LPCSTR)name);
PROC pFunc = zd_wglGetProcAddress((LPCSTR)name);
if(TestPointer(pFunc))
{
return pFunc;