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- moved the Win32GLVideo class to its own file.

Browse source 
This and SystemFrameBuffer need splitting up to support both Vulkan and OpenGL
This commit is contained in:
Christoph Oelckers 2018-06-24 20:11:08 +02:00
parent 491898fe2c
commit 52102f3d4a
4 changed files with 605 additions and 583 deletions
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3
src/win32/gl_sysfb.h
View file

@ -30,6 +30,9 @@ public:
protected:
void GetCenteredPos(int in_w, int in_h, int &winx, int &winy, int &winw, int &winh, int &scrwidth, int &scrheight);
void KeepWindowOnScreen(int &winx, int &winy, int winw, int winh, int scrwidth, int scrheight);
void PositionWindow(bool fullscreen);
void ResetGammaTable();

578
src/win32/win32gliface.cpp
View file

@ -50,6 +50,7 @@
#include "v_text.h"
#include "m_argv.h"
#include "doomerrors.h"
#include "win32glvideo.h"
#include "gl/renderer/gl_renderer.h"
#include "gl/system/gl_framebuffer.h"
@ -61,9 +62,6 @@ extern "C" {
__declspec(dllexport) int AmdPowerXpressRequestHighPerformance = 1;
}
// these get used before GLEW is initialized so we have to use separate pointers with different names
PFNWGLCHOOSEPIXELFORMATARBPROC myWglChoosePixelFormatARB; // = (PFNWGLCHOOSEPIXELFORMATARBPROC)wglGetProcAddress("wglChoosePixelFormatARB");
PFNWGLCREATECONTEXTATTRIBSARBPROC myWglCreateContextAttribsARB;
PFNWGLSWAPINTERVALEXTPROC myWglSwapIntervalExtProc;
CVAR(Int, vid_adapter, 1, CVAR_ARCHIVE | CVAR_GLOBALCONFIG)
@ -74,11 +72,6 @@ CVAR(Int, win_w, -1, CVAR_ARCHIVE | CVAR_GLOBALCONFIG)
CVAR(Int, win_h, -1, CVAR_ARCHIVE | CVAR_GLOBALCONFIG)
CVAR(Bool, win_maximized, false, CVAR_ARCHIVE | CVAR_GLOBALCONFIG)
CUSTOM_CVAR(Bool, gl_debug, false, CVAR_ARCHIVE | CVAR_GLOBALCONFIG | CVAR_NOINITCALL)
{
Printf("This won't take effect until " GAMENAME " is restarted.\n");
}
// For broadest GL compatibility, require user to explicitly enable quad-buffered stereo mode.
// Setting vr_enable_quadbuffered_stereo does not automatically invoke quad-buffered stereo,
// but makes it possible for subsequent "vr_mode 7" to invoke quad-buffered stereo
@ -89,575 +82,6 @@ CUSTOM_CVAR(Bool, vr_enable_quadbuffered, false, CVAR_ARCHIVE | CVAR_GLOBALCONFI
EXTERN_CVAR(Int, vid_defwidth)
EXTERN_CVAR(Int, vid_defheight)
EXTERN_CVAR(Int, vid_adapter)
EXTERN_CVAR(Bool, fullscreen)
//==========================================================================
//
//
//
//==========================================================================
class Win32GLVideo : public IVideo
{
public:
Win32GLVideo(int parm);
virtual ~Win32GLVideo();
DFrameBuffer *CreateFrameBuffer ();
void DumpAdapters();
bool InitHardware(HWND Window, int multisample);
void Shutdown();
HDC m_hDC;
protected:
HMODULE hmRender;
char m_DisplayDeviceBuffer[CCHDEVICENAME];
char *m_DisplayDeviceName;
HMONITOR m_hMonitor;
HWND m_Window;
HGLRC m_hRC;
HWND InitDummy();
void ShutdownDummy(HWND dummy);
bool SetPixelFormat();
bool SetupPixelFormat(int multisample);
void GetDisplayDeviceName();
public:
};
//==========================================================================
//
//
//
//==========================================================================
Win32GLVideo::Win32GLVideo(int parm)
{
I_SetWndProc();
GetDisplayDeviceName();
SetPixelFormat();
}
//==========================================================================
//
//
//
//==========================================================================
Win32GLVideo::~Win32GLVideo()
{
}
//==========================================================================
//
//
//
//==========================================================================
struct MonitorEnumState
{
int curIdx;
HMONITOR hFoundMonitor;
};
static BOOL CALLBACK GetDisplayDeviceNameMonitorEnumProc(HMONITOR hMonitor, HDC, LPRECT, LPARAM dwData)
{
MonitorEnumState *state = reinterpret_cast<MonitorEnumState *>(dwData);
MONITORINFOEX mi;
mi.cbSize = sizeof mi;
GetMonitorInfo(hMonitor, &mi);
// This assumes the monitors are returned by EnumDisplayMonitors in the
// order they're found in the Direct3D9 adapters list. Fingers crossed...
if (state->curIdx == vid_adapter)
{
state->hFoundMonitor = hMonitor;
// Don't stop enumeration; this makes EnumDisplayMonitors fail. I like
// proper fails.
}
++state->curIdx;
return TRUE;
}
//==========================================================================
//
//
//
//==========================================================================
void Win32GLVideo::GetDisplayDeviceName()
{
// If anything goes wrong, anything at all, everything uses the primary
// monitor.
m_DisplayDeviceName = 0;
m_hMonitor = 0;
MonitorEnumState mes;
mes.curIdx = 1;
mes.hFoundMonitor = 0;
// Could also use EnumDisplayDevices, I guess. That might work.
if (EnumDisplayMonitors(0, 0, &GetDisplayDeviceNameMonitorEnumProc, LPARAM(&mes)))
{
if (mes.hFoundMonitor)
{
MONITORINFOEX mi;
mi.cbSize = sizeof mi;
if (GetMonitorInfo(mes.hFoundMonitor, &mi))
{
strcpy(m_DisplayDeviceBuffer, mi.szDevice);
m_DisplayDeviceName = m_DisplayDeviceBuffer;
m_hMonitor = mes.hFoundMonitor;
}
}
}
}
//==========================================================================
//
//
//
//==========================================================================
DFrameBuffer *Win32GLVideo::CreateFrameBuffer()
{
SystemFrameBuffer *fb;
fb = new OpenGLFrameBuffer(m_hMonitor, fullscreen);
return fb;
}
//==========================================================================
//
//
//
//==========================================================================
struct DumpAdaptersState
{
unsigned index;
char *displayDeviceName;
};
static BOOL CALLBACK DumpAdaptersMonitorEnumProc(HMONITOR hMonitor, HDC, LPRECT, LPARAM dwData)
{
DumpAdaptersState *state = reinterpret_cast<DumpAdaptersState *>(dwData);
MONITORINFOEX mi;
mi.cbSize=sizeof mi;
char moreinfo[64] = "";
bool active = true;
if (GetMonitorInfo(hMonitor, &mi))
{
bool primary = !!(mi.dwFlags & MONITORINFOF_PRIMARY);
mysnprintf(moreinfo, countof(moreinfo), " [%ldx%ld @ (%ld,%ld)]%s",
mi.rcMonitor.right - mi.rcMonitor.left,
mi.rcMonitor.bottom - mi.rcMonitor.top,
mi.rcMonitor.left, mi.rcMonitor.top,
primary ? " (Primary)" : "");
if (!state->displayDeviceName && !primary)
active = false;//primary selected, but this ain't primary
else if (state->displayDeviceName && strcmp(state->displayDeviceName, mi.szDevice) != 0)
active = false;//this isn't the selected one
}
Printf("%s%u. %s\n",
active ? TEXTCOLOR_BOLD : "",
state->index,
moreinfo);
++state->index;
return TRUE;
}
//==========================================================================
//
//
//
//==========================================================================
void Win32GLVideo::DumpAdapters()
{
DumpAdaptersState das;
das.index = 1;
das.displayDeviceName = m_DisplayDeviceName;
EnumDisplayMonitors(0, 0, DumpAdaptersMonitorEnumProc, LPARAM(&das));
}
//==========================================================================
//
//
//
//==========================================================================
HWND Win32GLVideo::InitDummy()
{
HMODULE g_hInst = GetModuleHandle(NULL);
HWND dummy;
//Create a rect structure for the size/position of the window
RECT windowRect;
windowRect.left = 0;
windowRect.right = 64;
windowRect.top = 0;
windowRect.bottom = 64;
//Window class structure
WNDCLASS wc;
//Fill in window class struct
wc.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC;
wc.lpfnWndProc = (WNDPROC) DefWindowProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = g_hInst;
wc.hIcon = LoadIcon(NULL, IDI_WINLOGO);
wc.hCursor = LoadCursor(NULL, IDC_ARROW);
wc.hbrBackground = NULL;
wc.lpszMenuName = NULL;
wc.lpszClassName = "GZDoomOpenGLDummyWindow";
//Register window class
if(!RegisterClass(&wc))
{
return 0;
}
//Set window style & extended style
DWORD style, exStyle;
exStyle = WS_EX_CLIENTEDGE;
style = WS_SYSMENU | WS_BORDER | WS_CAPTION;// | WS_VISIBLE;
//Adjust the window size so that client area is the size requested
AdjustWindowRectEx(&windowRect, style, false, exStyle);
//Create Window
if(!(dummy = CreateWindowEx(exStyle,
"GZDoomOpenGLDummyWindow",
"GZDOOM",
WS_CLIPSIBLINGS | WS_CLIPCHILDREN | style,
0, 0,
windowRect.right-windowRect.left,
windowRect.bottom-windowRect.top,
NULL, NULL,
g_hInst,
NULL)))
{
UnregisterClass("GZDoomOpenGLDummyWindow", g_hInst);
return 0;
}
ShowWindow(dummy, SW_HIDE);
return dummy;
}
//==========================================================================
//
//
//
//==========================================================================
void Win32GLVideo::ShutdownDummy(HWND dummy)
{
DestroyWindow(dummy);
UnregisterClass("GZDoomOpenGLDummyWindow", GetModuleHandle(NULL));
}
//==========================================================================
//
//
//
//==========================================================================
bool Win32GLVideo::SetPixelFormat()
{
HDC hDC;
HGLRC hRC;
HWND dummy;
PIXELFORMATDESCRIPTOR pfd = {
sizeof(PIXELFORMATDESCRIPTOR),
1,
PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER,
PFD_TYPE_RGBA,
32, // color depth
0, 0, 0, 0, 0, 0,
0,
0,
0,
0, 0, 0, 0,
16, // z depth
0, // stencil buffer
0,
PFD_MAIN_PLANE,
0,
0, 0, 0
};
int pixelFormat;
// we have to create a dummy window to init stuff from or the full init stuff fails
dummy = InitDummy();
hDC = GetDC(dummy);
pixelFormat = ChoosePixelFormat(hDC, &pfd);
DescribePixelFormat(hDC, pixelFormat, sizeof(pfd), &pfd);
::SetPixelFormat(hDC, pixelFormat, &pfd);
hRC = wglCreateContext(hDC);
wglMakeCurrent(hDC, hRC);
myWglChoosePixelFormatARB = (PFNWGLCHOOSEPIXELFORMATARBPROC)wglGetProcAddress("wglChoosePixelFormatARB");
myWglCreateContextAttribsARB = (PFNWGLCREATECONTEXTATTRIBSARBPROC)wglGetProcAddress("wglCreateContextAttribsARB");
// any extra stuff here?
wglMakeCurrent(NULL, NULL);
wglDeleteContext(hRC);
ReleaseDC(dummy, hDC);
ShutdownDummy(dummy);
return true;
}
//==========================================================================
//
//
//
//==========================================================================
bool Win32GLVideo::SetupPixelFormat(int multisample)
{
int i;
int colorDepth;
HDC deskDC;
int attributes[28];
int pixelFormat;
unsigned int numFormats;
float attribsFloat[] = {0.0f, 0.0f};
deskDC = GetDC(GetDesktopWindow());
colorDepth = GetDeviceCaps(deskDC, BITSPIXEL);
ReleaseDC(GetDesktopWindow(), deskDC);
if (myWglChoosePixelFormatARB)
{
again:
attributes[0] = WGL_RED_BITS_ARB; //bits
attributes[1] = 8;
attributes[2] = WGL_GREEN_BITS_ARB; //bits
attributes[3] = 8;
attributes[4] = WGL_BLUE_BITS_ARB; //bits
attributes[5] = 8;
attributes[6] = WGL_ALPHA_BITS_ARB;
attributes[7] = 8;
attributes[8] = WGL_DEPTH_BITS_ARB;
attributes[9] = 24;
attributes[10] = WGL_STENCIL_BITS_ARB;
attributes[11] = 8;
attributes[12] = WGL_DRAW_TO_WINDOW_ARB; //required to be true
attributes[13] = true;
attributes[14] = WGL_SUPPORT_OPENGL_ARB;
attributes[15] = true;
attributes[16] = WGL_DOUBLE_BUFFER_ARB;
attributes[17] = true;
if (multisample > 0)
{
attributes[18] = WGL_SAMPLE_BUFFERS_ARB;
attributes[19] = true;
attributes[20] = WGL_SAMPLES_ARB;
attributes[21] = multisample;
i = 22;
}
else
{
i = 18;
}
attributes[i++] = WGL_ACCELERATION_ARB; //required to be FULL_ACCELERATION_ARB
attributes[i++] = WGL_FULL_ACCELERATION_ARB;
if (vr_enable_quadbuffered)
{
// [BB] Starting with driver version 314.07, NVIDIA GeForce cards support OpenGL quad buffered
// stereo rendering with 3D Vision hardware. Select the corresponding attribute here.
attributes[i++] = WGL_STEREO_ARB;
attributes[i++] = true;
}
attributes[i++] = 0;
attributes[i++] = 0;
if (!myWglChoosePixelFormatARB(m_hDC, attributes, attribsFloat, 1, &pixelFormat, &numFormats))
{
Printf("R_OPENGL: Couldn't choose pixel format. Retrying in compatibility mode\n");
goto oldmethod;
}
if (numFormats == 0)
{
if (vr_enable_quadbuffered)
{
Printf("R_OPENGL: No valid pixel formats found for VR quadbuffering. Retrying without this feature\n");
vr_enable_quadbuffered = false;
goto again;
}
Printf("R_OPENGL: No valid pixel formats found. Retrying in compatibility mode\n");
goto oldmethod;
}
}
else
{
oldmethod:
// If wglChoosePixelFormatARB is not found we have to do it the old fashioned way.
static PIXELFORMATDESCRIPTOR pfd = {
sizeof(PIXELFORMATDESCRIPTOR),
1,
PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER,
PFD_TYPE_RGBA,
32, // color depth
0, 0, 0, 0, 0, 0,
0,
0,
0,
0, 0, 0, 0,
32, // z depth
8, // stencil buffer
0,
PFD_MAIN_PLANE,
0,
0, 0, 0
};
pixelFormat = ChoosePixelFormat(m_hDC, &pfd);
DescribePixelFormat(m_hDC, pixelFormat, sizeof(pfd), &pfd);
if (pfd.dwFlags & PFD_GENERIC_FORMAT)
{
I_Error("R_OPENGL: OpenGL driver not accelerated!");
return false;
}
}
if (!::SetPixelFormat(m_hDC, pixelFormat, NULL))
{
I_Error("R_OPENGL: Couldn't set pixel format.\n");
return false;
}
return true;
}
//==========================================================================
//
//
//
//==========================================================================
bool Win32GLVideo::InitHardware (HWND Window, int multisample)
{
m_Window=Window;
m_hDC = GetDC(Window);
if (!SetupPixelFormat(multisample))
{
return false;
}
int prof = WGL_CONTEXT_CORE_PROFILE_BIT_ARB;
const char *version = Args->CheckValue("-glversion");
if (version != nullptr && strtod(version, nullptr) < 3.0) prof = WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB;
for (; prof <= WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB; prof++)
{
m_hRC = NULL;
if (myWglCreateContextAttribsARB != NULL)
{
// let's try to get the best version possible. Some drivers only give us the version we request
// which breaks all version checks for feature support. The highest used features we use are from version 4.4, and 3.0 is a requirement.
static int versions[] = { 46, 45, 44, 43, 42, 41, 40, 33, 32, 31, 30, -1 };
for (int i = 0; versions[i] > 0; i++)
{
int ctxAttribs[] = {
WGL_CONTEXT_MAJOR_VERSION_ARB, versions[i] / 10,
WGL_CONTEXT_MINOR_VERSION_ARB, versions[i] % 10,
WGL_CONTEXT_FLAGS_ARB, gl_debug ? WGL_CONTEXT_DEBUG_BIT_ARB : 0,
WGL_CONTEXT_PROFILE_MASK_ARB, prof,
0
};
m_hRC = myWglCreateContextAttribsARB(m_hDC, 0, ctxAttribs);
if (m_hRC != NULL) break;
}
}
if (m_hRC == NULL && prof == WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB)
{
m_hRC = wglCreateContext(m_hDC);
if (m_hRC == NULL)
{
I_Error("R_OPENGL: Unable to create an OpenGL render context.\n");
return false;
}
}
if (m_hRC != NULL)
{
wglMakeCurrent(m_hDC, m_hRC);
return true;
}
}
// We get here if the driver doesn't support the modern context creation API which always means an old driver.
I_Error ("R_OPENGL: Unable to create an OpenGL render context. Insufficient driver support for context creation\n");
return false;
}
//==========================================================================
//
//
//
//==========================================================================
void Win32GLVideo::Shutdown()
{
if (m_hRC)
{
wglMakeCurrent(0, 0);
wglDeleteContext(m_hRC);
}
if (m_hDC) ReleaseDC(m_Window, m_hDC);
}
//==========================================================================

42
src/win32/win32glvideo.h Normal file
View file

@ -0,0 +1,42 @@
#pragma once
#include "v_video.h"
//==========================================================================
//
//
//
//==========================================================================
class Win32GLVideo : public IVideo
{
public:
Win32GLVideo(int parm);
virtual ~Win32GLVideo();
DFrameBuffer *CreateFrameBuffer();
void DumpAdapters();
bool InitHardware(HWND Window, int multisample);
void Shutdown();
HDC m_hDC;
protected:
HMODULE hmRender;
char m_DisplayDeviceBuffer[CCHDEVICENAME];
char *m_DisplayDeviceName;
HMONITOR m_hMonitor;
HWND m_Window;
HGLRC m_hRC;
HWND InitDummy();
void ShutdownDummy(HWND dummy);
bool SetPixelFormat();
bool SetupPixelFormat(int multisample);
void GetDisplayDeviceName();
public:
};

565
src/win32/win32video.cpp
View file

@ -32,13 +32,566 @@
**
*/
#define _WIN32_WINNT 0x0501
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <mmsystem.h>
#include <GL/gl.h>
#include "wglext.h"
// HEADER FILES ------------------------------------------------------------
#include "c_cvars.h"
#include "gl_sysfb.h"
#include "hardware.h"
#include "x86.h"
#include "templates.h"
#include "version.h"
#include "c_console.h"
#include "v_video.h"
#include "i_input.h"
#include "i_system.h"
#include "doomstat.h"
#include "v_text.h"
#include "m_argv.h"
#include "doomerrors.h"
#include "win32glvideo.h"
#include "gl/system/gl_framebuffer.h"
EXTERN_CVAR(Int, vid_adapter)
EXTERN_CVAR(Bool, fullscreen)
EXTERN_CVAR(Bool, vr_enable_quadbuffered)
CUSTOM_CVAR(Bool, gl_debug, false, CVAR_ARCHIVE | CVAR_GLOBALCONFIG | CVAR_NOINITCALL)
{
Printf("This won't take effect until " GAMENAME " is restarted.\n");
}
// these get used before GLEW is initialized so we have to use separate pointers with different names
PFNWGLCHOOSEPIXELFORMATARBPROC myWglChoosePixelFormatARB; // = (PFNWGLCHOOSEPIXELFORMATARBPROC)wglGetProcAddress("wglChoosePixelFormatARB");
PFNWGLCREATECONTEXTATTRIBSARBPROC myWglCreateContextAttribsARB;
//==========================================================================
//
//
//
//==========================================================================
Win32GLVideo::Win32GLVideo(int parm)
{
I_SetWndProc();
GetDisplayDeviceName();
SetPixelFormat();
}
//==========================================================================
//
//
//
//==========================================================================
Win32GLVideo::~Win32GLVideo()
{
}
//==========================================================================
//
//
//
//==========================================================================
struct MonitorEnumState
{
int curIdx;
HMONITOR hFoundMonitor;
};
static BOOL CALLBACK GetDisplayDeviceNameMonitorEnumProc(HMONITOR hMonitor, HDC, LPRECT, LPARAM dwData)
{
MonitorEnumState *state = reinterpret_cast<MonitorEnumState *>(dwData);
MONITORINFOEX mi;
mi.cbSize = sizeof mi;
GetMonitorInfo(hMonitor, &mi);
// This assumes the monitors are returned by EnumDisplayMonitors in the
// order they're found in the Direct3D9 adapters list. Fingers crossed...
if (state->curIdx == vid_adapter)
{
state->hFoundMonitor = hMonitor;
// Don't stop enumeration; this makes EnumDisplayMonitors fail. I like
// proper fails.
}
++state->curIdx;
return TRUE;
}
//==========================================================================
//
//
//
//==========================================================================
void Win32GLVideo::GetDisplayDeviceName()
{
// If anything goes wrong, anything at all, everything uses the primary
// monitor.
m_DisplayDeviceName = 0;
m_hMonitor = 0;
MonitorEnumState mes;
mes.curIdx = 1;
mes.hFoundMonitor = 0;
// Could also use EnumDisplayDevices, I guess. That might work.
if (EnumDisplayMonitors(0, 0, &GetDisplayDeviceNameMonitorEnumProc, LPARAM(&mes)))
{
if (mes.hFoundMonitor)
{
MONITORINFOEX mi;
mi.cbSize = sizeof mi;
if (GetMonitorInfo(mes.hFoundMonitor, &mi))
{
strcpy(m_DisplayDeviceBuffer, mi.szDevice);
m_DisplayDeviceName = m_DisplayDeviceBuffer;
m_hMonitor = mes.hFoundMonitor;
}
}
}
}
//==========================================================================
//
//
//
//==========================================================================
DFrameBuffer *Win32GLVideo::CreateFrameBuffer()
{
SystemFrameBuffer *fb;
fb = new OpenGLFrameBuffer(m_hMonitor, fullscreen);
return fb;
}
//==========================================================================
//
//
//
//==========================================================================
struct DumpAdaptersState
{
unsigned index;
char *displayDeviceName;
};
static BOOL CALLBACK DumpAdaptersMonitorEnumProc(HMONITOR hMonitor, HDC, LPRECT, LPARAM dwData)
{
DumpAdaptersState *state = reinterpret_cast<DumpAdaptersState *>(dwData);
MONITORINFOEX mi;
mi.cbSize = sizeof mi;
char moreinfo[64] = "";
bool active = true;
if (GetMonitorInfo(hMonitor, &mi))
{
bool primary = !!(mi.dwFlags & MONITORINFOF_PRIMARY);
mysnprintf(moreinfo, countof(moreinfo), " [%ldx%ld @ (%ld,%ld)]%s",
mi.rcMonitor.right - mi.rcMonitor.left,
mi.rcMonitor.bottom - mi.rcMonitor.top,
mi.rcMonitor.left, mi.rcMonitor.top,
primary ? " (Primary)" : "");
if (!state->displayDeviceName && !primary)
active = false;//primary selected, but this ain't primary
else if (state->displayDeviceName && strcmp(state->displayDeviceName, mi.szDevice) != 0)
active = false;//this isn't the selected one
}
Printf("%s%u. %s\n",
active ? TEXTCOLOR_BOLD : "",
state->index,
moreinfo);
++state->index;
return TRUE;
}
//==========================================================================
//
//
//
//==========================================================================
void Win32GLVideo::DumpAdapters()
{
DumpAdaptersState das;
das.index = 1;
das.displayDeviceName = m_DisplayDeviceName;
EnumDisplayMonitors(0, 0, DumpAdaptersMonitorEnumProc, LPARAM(&das));
}
//==========================================================================
//
//
//
//==========================================================================
HWND Win32GLVideo::InitDummy()
{
HMODULE g_hInst = GetModuleHandle(NULL);
HWND dummy;
//Create a rect structure for the size/position of the window
RECT windowRect;
windowRect.left = 0;
windowRect.right = 64;
windowRect.top = 0;
windowRect.bottom = 64;
//Window class structure
WNDCLASS wc;
//Fill in window class struct
wc.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC;
wc.lpfnWndProc = (WNDPROC)DefWindowProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = g_hInst;
wc.hIcon = LoadIcon(NULL, IDI_WINLOGO);
wc.hCursor = LoadCursor(NULL, IDC_ARROW);
wc.hbrBackground = NULL;
wc.lpszMenuName = NULL;
wc.lpszClassName = "GZDoomOpenGLDummyWindow";
//Register window class
if (!RegisterClass(&wc))
{
return 0;
}
//Set window style & extended style
DWORD style, exStyle;
exStyle = WS_EX_CLIENTEDGE;
style = WS_SYSMENU | WS_BORDER | WS_CAPTION;// | WS_VISIBLE;
//Adjust the window size so that client area is the size requested
AdjustWindowRectEx(&windowRect, style, false, exStyle);
//Create Window
if (!(dummy = CreateWindowEx(exStyle,
"GZDoomOpenGLDummyWindow",
"GZDOOM",
WS_CLIPSIBLINGS | WS_CLIPCHILDREN | style,
0, 0,
windowRect.right - windowRect.left,
windowRect.bottom - windowRect.top,
NULL, NULL,
g_hInst,
NULL)))
{
UnregisterClass("GZDoomOpenGLDummyWindow", g_hInst);
return 0;
}
ShowWindow(dummy, SW_HIDE);
return dummy;
}
//==========================================================================
//
//
//
//==========================================================================
void Win32GLVideo::ShutdownDummy(HWND dummy)
{
DestroyWindow(dummy);
UnregisterClass("GZDoomOpenGLDummyWindow", GetModuleHandle(NULL));
}
//==========================================================================
//
//
//
//==========================================================================
bool Win32GLVideo::SetPixelFormat()
{
HDC hDC;
HGLRC hRC;
HWND dummy;
PIXELFORMATDESCRIPTOR pfd = {
sizeof(PIXELFORMATDESCRIPTOR),
1,
PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER,
PFD_TYPE_RGBA,
32, // color depth
0, 0, 0, 0, 0, 0,
0,
0,
0,
0, 0, 0, 0,
16, // z depth
0, // stencil buffer
0,
PFD_MAIN_PLANE,
0,
0, 0, 0
};
int pixelFormat;
// we have to create a dummy window to init stuff from or the full init stuff fails
dummy = InitDummy();
hDC = GetDC(dummy);
pixelFormat = ChoosePixelFormat(hDC, &pfd);
DescribePixelFormat(hDC, pixelFormat, sizeof(pfd), &pfd);
::SetPixelFormat(hDC, pixelFormat, &pfd);
hRC = wglCreateContext(hDC);
wglMakeCurrent(hDC, hRC);
myWglChoosePixelFormatARB = (PFNWGLCHOOSEPIXELFORMATARBPROC)wglGetProcAddress("wglChoosePixelFormatARB");
myWglCreateContextAttribsARB = (PFNWGLCREATECONTEXTATTRIBSARBPROC)wglGetProcAddress("wglCreateContextAttribsARB");
// any extra stuff here?
wglMakeCurrent(NULL, NULL);
wglDeleteContext(hRC);
ReleaseDC(dummy, hDC);
ShutdownDummy(dummy);
return true;
}
//==========================================================================
//
//
//
//==========================================================================
bool Win32GLVideo::SetupPixelFormat(int multisample)
{
int i;
int colorDepth;
HDC deskDC;
int attributes[28];
int pixelFormat;
unsigned int numFormats;
float attribsFloat[] = { 0.0f, 0.0f };
deskDC = GetDC(GetDesktopWindow());
colorDepth = GetDeviceCaps(deskDC, BITSPIXEL);
ReleaseDC(GetDesktopWindow(), deskDC);
if (myWglChoosePixelFormatARB)
{
again:
attributes[0] = WGL_RED_BITS_ARB; //bits
attributes[1] = 8;
attributes[2] = WGL_GREEN_BITS_ARB; //bits
attributes[3] = 8;
attributes[4] = WGL_BLUE_BITS_ARB; //bits
attributes[5] = 8;
attributes[6] = WGL_ALPHA_BITS_ARB;
attributes[7] = 8;
attributes[8] = WGL_DEPTH_BITS_ARB;
attributes[9] = 24;
attributes[10] = WGL_STENCIL_BITS_ARB;
attributes[11] = 8;
attributes[12] = WGL_DRAW_TO_WINDOW_ARB; //required to be true
attributes[13] = true;
attributes[14] = WGL_SUPPORT_OPENGL_ARB;
attributes[15] = true;
attributes[16] = WGL_DOUBLE_BUFFER_ARB;
attributes[17] = true;
if (multisample > 0)
{
attributes[18] = WGL_SAMPLE_BUFFERS_ARB;
attributes[19] = true;
attributes[20] = WGL_SAMPLES_ARB;
attributes[21] = multisample;
i = 22;
}
else
{
i = 18;
}
attributes[i++] = WGL_ACCELERATION_ARB; //required to be FULL_ACCELERATION_ARB
attributes[i++] = WGL_FULL_ACCELERATION_ARB;
if (vr_enable_quadbuffered)
{
// [BB] Starting with driver version 314.07, NVIDIA GeForce cards support OpenGL quad buffered
// stereo rendering with 3D Vision hardware. Select the corresponding attribute here.
attributes[i++] = WGL_STEREO_ARB;
attributes[i++] = true;
}
attributes[i++] = 0;
attributes[i++] = 0;
if (!myWglChoosePixelFormatARB(m_hDC, attributes, attribsFloat, 1, &pixelFormat, &numFormats))
{
Printf("R_OPENGL: Couldn't choose pixel format. Retrying in compatibility mode\n");
goto oldmethod;
}
if (numFormats == 0)
{
if (vr_enable_quadbuffered)
{
Printf("R_OPENGL: No valid pixel formats found for VR quadbuffering. Retrying without this feature\n");
vr_enable_quadbuffered = false;
goto again;
}
Printf("R_OPENGL: No valid pixel formats found. Retrying in compatibility mode\n");
goto oldmethod;
}
}
else
{
oldmethod:
// If wglChoosePixelFormatARB is not found we have to do it the old fashioned way.
static PIXELFORMATDESCRIPTOR pfd = {
sizeof(PIXELFORMATDESCRIPTOR),
1,
PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER,
PFD_TYPE_RGBA,
32, // color depth
0, 0, 0, 0, 0, 0,
0,
0,
0,
0, 0, 0, 0,
32, // z depth
8, // stencil buffer
0,
PFD_MAIN_PLANE,
0,
0, 0, 0
};
pixelFormat = ChoosePixelFormat(m_hDC, &pfd);
DescribePixelFormat(m_hDC, pixelFormat, sizeof(pfd), &pfd);
if (pfd.dwFlags & PFD_GENERIC_FORMAT)
{
I_Error("R_OPENGL: OpenGL driver not accelerated!");
return false;
}
}
if (!::SetPixelFormat(m_hDC, pixelFormat, NULL))
{
I_Error("R_OPENGL: Couldn't set pixel format.\n");
return false;
}
return true;
}
//==========================================================================
//
//
//
//==========================================================================
bool Win32GLVideo::InitHardware(HWND Window, int multisample)
{
m_Window = Window;
m_hDC = GetDC(Window);
if (!SetupPixelFormat(multisample))
{
return false;
}
int prof = WGL_CONTEXT_CORE_PROFILE_BIT_ARB;
const char *version = Args->CheckValue("-glversion");
if (version != nullptr && strtod(version, nullptr) < 3.0) prof = WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB;
for (; prof <= WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB; prof++)
{
m_hRC = NULL;
if (myWglCreateContextAttribsARB != NULL)
{
// let's try to get the best version possible. Some drivers only give us the version we request
// which breaks all version checks for feature support. The highest used features we use are from version 4.4, and 3.0 is a requirement.
static int versions[] = { 46, 45, 44, 43, 42, 41, 40, 33, 32, 31, 30, -1 };
for (int i = 0; versions[i] > 0; i++)
{
int ctxAttribs[] = {
WGL_CONTEXT_MAJOR_VERSION_ARB, versions[i] / 10,
WGL_CONTEXT_MINOR_VERSION_ARB, versions[i] % 10,
WGL_CONTEXT_FLAGS_ARB, gl_debug ? WGL_CONTEXT_DEBUG_BIT_ARB : 0,
WGL_CONTEXT_PROFILE_MASK_ARB, prof,
0
};
m_hRC = myWglCreateContextAttribsARB(m_hDC, 0, ctxAttribs);
if (m_hRC != NULL) break;
}
}
if (m_hRC == NULL && prof == WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB)
{
m_hRC = wglCreateContext(m_hDC);
if (m_hRC == NULL)
{
I_Error("R_OPENGL: Unable to create an OpenGL render context.\n");
return false;
}
}
if (m_hRC != NULL)
{
wglMakeCurrent(m_hDC, m_hRC);
return true;
}
}
// We get here if the driver doesn't support the modern context creation API which always means an old driver.
I_Error("R_OPENGL: Unable to create an OpenGL render context. Insufficient driver support for context creation\n");
return false;
}
//==========================================================================
//
//
//
//==========================================================================
void Win32GLVideo::Shutdown()
{
if (m_hRC)
{
wglMakeCurrent(0, 0);
wglDeleteContext(m_hRC);
}
if (m_hDC) ReleaseDC(m_Window, m_hDC);
}