Screen::Screen(const uint32_t width, const uint32_t height, const char *title) :
w(width),
h(height),
fps(0.0),
frameCount(0),
vsyncOn(false)
{
pixels = new uint32_t[width * height];
memset(&wc, 0, sizeof(wc));
wc.lpfnWndProc = DefWindowProc;
wc.style = CS_CLASSDC;
wc.cbSize = sizeof(WNDCLASSEX);
wc.hInstance = GetModuleHandle(NULL);
wc.lpszClassName = TEXT("wincls");
RegisterClassEx(&wc);
hwnd = CreateWindow(TEXT("wincls"), TEXT(title?title:"Generic window"), WS_VISIBLE, CW_USEDEFAULT, CW_USEDEFAULT, w, h, NULL, NULL, wc.hInstance, NULL);
pfd = { 0 }; pfd.dwFlags = PFD_DOUBLEBUFFER;
SetPixelFormat(GetDC(hwnd), ChoosePixelFormat(GetDC(hwnd), &pfd), &pfd);
ctx = wglCreateContext(GetDC(hwnd)); wglMakeCurrent(GetDC(hwnd), ctx);
BOOL(__stdcall* SwapInterval) (int) = (BOOL(__stdcall*)(int)) wglGetProcAddress("wglSwapIntervalEXT");
if (SwapInterval) {
SwapInterval(1);
}
glGenTextures(1, &backbuffer);
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, backbuffer);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
toggleVSync(vsyncOn);
QueryPerformanceFrequency(&perfFrequency);
QueryPerformanceCounter(&previousTime);
}
bool WindowsGLContext::Init(HINSTANCE hInst, HWND window, std::string *error_message) {
*error_message = "ok";
hWnd = window;
GLuint PixelFormat;
// TODO: Change to use WGL_ARB_pixel_format instead
static const PIXELFORMATDESCRIPTOR pfd = {
sizeof(PIXELFORMATDESCRIPTOR), // Size Of This Pixel Format Descriptor
1, // Version Number
PFD_DRAW_TO_WINDOW | // Format Must Support Window
PFD_SUPPORT_OPENGL | // Format Must Support OpenGL
PFD_DOUBLEBUFFER, // Must Support Double Buffering
PFD_TYPE_RGBA, // Request An RGBA Format
24, // Select Our Color Depth
0, 0, 0, 0, 0, 0, // Color Bits Ignored
8, // No Alpha Buffer
0, // Shift Bit Ignored
0, // No Accumulation Buffer
0, 0, 0, 0, // Accumulation Bits Ignored
16, // At least a 16Bit Z-Buffer (Depth Buffer)
8, // 8-bit Stencil Buffer
0, // No Auxiliary Buffer
PFD_MAIN_PLANE, // Main Drawing Layer
0, // Reserved
0, 0, 0 // Layer Masks Ignored
};
hDC = GetDC(hWnd);
if (!hDC) {
*error_message = "Failed to get a device context.";
return false; // Return FALSE
}
if (!(PixelFormat = ChoosePixelFormat(hDC, &pfd))) {
*error_message = "Can't find a suitable PixelFormat.";
return false;
}
if (!SetPixelFormat(hDC, PixelFormat, &pfd)) {
*error_message = "Can't set the PixelFormat.";
return false;
}
if (!(hRC = wglCreateContext(hDC))) {
*error_message = "Can't create a GL rendering context.";
return false;
}
if (!wglMakeCurrent(hDC, hRC)) {
*error_message = "Can't activate the GL rendering context.";
return false;
}
// Check for really old OpenGL drivers and refuse to run really early in some cases.
// TODO: Also either tell the user to give up or point the user to the right websites. Here's some collected
// information about a system that will not work:
// GL_VERSION GL_VENDOR GL_RENDERER
// "1.4.0 - Build 8.14.10.2364" "intel" intel Pineview Platform
I18NCategory *err = GetI18NCategory("Error");
std::string glVersion = (const char *)glGetString(GL_VERSION);
std::string glRenderer = (const char *)glGetString(GL_RENDERER);
const std::string openGL_1 = "1.";
if (glRenderer == "GDI Generic" || glVersion.substr(0, openGL_1.size()) == openGL_1) {
//The error may come from 16-bit colour mode
//Check Colour depth
HDC dc = GetDC(NULL);
u32 colour_depth = GetDeviceCaps(dc, BITSPIXEL);
ReleaseDC(NULL, dc);
if (colour_depth != 32){
MessageBox(0, L"Please switch your display to 32-bit colour mode", L"OpenGL Error", MB_OK);
ExitProcess(1);
}
const char *defaultError = "Insufficient OpenGL driver support detected!\n\n"
"Your GPU reports that it does not support OpenGL 2.0. Would you like to try using DirectX 9 instead?\n\n"
"DirectX is currently compatible with less games, but on your GPU it may be the only choice.\n\n"
"Visit the forums at http://forums.ppsspp.org for more information.\n\n";
std::wstring versionDetected = ConvertUTF8ToWString(glVersion + "\n\n");
std::wstring error = ConvertUTF8ToWString(err->T("InsufficientOpenGLDriver", defaultError));
std::wstring title = ConvertUTF8ToWString(err->T("OpenGLDriverError", "OpenGL driver error"));
std::wstring combined = versionDetected + error;
bool yes = IDYES == MessageBox(hWnd, combined.c_str(), title.c_str(), MB_ICONERROR | MB_YESNO);
if (yes) {
// Change the config to D3D and restart.
g_Config.iGPUBackend = GPU_BACKEND_DIRECT3D9;
g_Config.Save();
W32Util::ExitAndRestart();
}
// Avoid further error messages. Let's just bail, it's safe, and we can't continue.
ExitProcess(1);
}
if (GLEW_OK != glewInit()) {
*error_message = "Failed to initialize GLEW.";
return false;
}
CheckGLExtensions();
int contextFlags = g_Config.bGfxDebugOutput ? WGL_CONTEXT_DEBUG_BIT_ARB : 0;
// Alright, now for the modernity. First try a 4.4, then 4.3, context, if that fails try 3.3.
// I can't seem to find a way that lets you simply request the newest version available.
const int attribs44[] = {
WGL_CONTEXT_MAJOR_VERSION_ARB, 4,
WGL_CONTEXT_MINOR_VERSION_ARB, 4,
WGL_CONTEXT_FLAGS_ARB, contextFlags,
WGL_CONTEXT_PROFILE_MASK_ARB, WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB,
0
};
const int attribs43[] = {
WGL_CONTEXT_MAJOR_VERSION_ARB, 4,
WGL_CONTEXT_MINOR_VERSION_ARB, 3,
WGL_CONTEXT_FLAGS_ARB, contextFlags,
WGL_CONTEXT_PROFILE_MASK_ARB, WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB,
0
};
const int attribs33[] = {
WGL_CONTEXT_MAJOR_VERSION_ARB, 3,
WGL_CONTEXT_MINOR_VERSION_ARB, 3,
WGL_CONTEXT_FLAGS_ARB, contextFlags,
WGL_CONTEXT_PROFILE_MASK_ARB, WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB,
0
};
HGLRC m_hrc;
if (wglewIsSupported("WGL_ARB_create_context") == 1) {
m_hrc = wglCreateContextAttribsARB(hDC, 0, attribs44);
if (!m_hrc)
m_hrc = wglCreateContextAttribsARB(hDC, 0, attribs43);
if (!m_hrc)
m_hrc = wglCreateContextAttribsARB(hDC, 0, attribs33);
if (!m_hrc) {
// Fall back
m_hrc = hRC;
} else {
// Switch to the new ARB context.
wglMakeCurrent(NULL, NULL);
wglDeleteContext(hRC);
wglMakeCurrent(hDC, m_hrc);
}
} else {
// We can't make a GL 3.x context. Use an old style context (GL 2.1 and before)
m_hrc = hRC;
}
if (GLEW_OK != glewInit()) {
*error_message = "Failed to re-initialize GLEW.";
return false;
}
if (!m_hrc) {
*error_message = "No m_hrc";
return false;
}
hRC = m_hrc;
SwapInterval(0);
if (g_Config.bGfxDebugOutput) {
if (wglewIsSupported("GL_KHR_debug") == 1) {
glGetError();
glDebugMessageCallback((GLDEBUGPROC)&DebugCallbackARB, nullptr);
if (glGetError()) {
ERROR_LOG(G3D, "Failed to register a debug log callback");
}
glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS);
if (glGetError()) {
ERROR_LOG(G3D, "Failed to enable synchronous debug output");
}
} else if (glewIsSupported("GL_ARB_debug_output")) {
glGetError();
glDebugMessageCallbackARB((GLDEBUGPROCARB)&DebugCallbackARB, 0); // print debug output to stderr
if (glGetError()) {
ERROR_LOG(G3D, "Failed to register a debug log callback");
}
glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS_ARB);
if (glGetError()) {
ERROR_LOG(G3D, "Failed to enable synchronous debug output");
}
// For extra verbosity uncomment this (MEDIUM and HIGH are on by default):
// glDebugMessageControlARB(GL_DONT_CARE, GL_DONT_CARE, GL_DEBUG_SEVERITY_LOW_ARB, 0, nullptr, GL_TRUE);
}
glEnable(GL_DEBUG_OUTPUT);
}
pauseRequested = false;
resumeRequested = false;
// These are auto-reset events.
pauseEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
resumeEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
return true; // Success
}
/**
* \brief Initialize a (new or reused) OpenGL context.
* set global gl-related variables to their default values
*/
static int initGl(uint32_t d_width, uint32_t d_height) {
int scale_type = mipmap_gen ? GL_LINEAR_MIPMAP_NEAREST : GL_LINEAR;
autodetectGlExtensions();
gl_target = use_rectangle == 1 ? GL_TEXTURE_RECTANGLE : GL_TEXTURE_2D;
yuvconvtype = use_yuv | lscale << YUV_LUM_SCALER_SHIFT | cscale << YUV_CHROM_SCALER_SHIFT;
texSize(image_width, image_height, &texture_width, &texture_height);
Disable(GL_BLEND);
Disable(GL_DEPTH_TEST);
DepthMask(GL_FALSE);
Disable(GL_CULL_FACE);
Enable(gl_target);
DrawBuffer(vo_doublebuffering?GL_BACK:GL_FRONT);
TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
mp_msg(MSGT_VO, MSGL_V, "[gl] Creating %dx%d texture...\n",
texture_width, texture_height);
if (is_yuv) {
int i;
int xs, ys;
mp_get_chroma_shift(image_format, &xs, &ys);
GenTextures(21, default_texs);
default_texs[21] = 0;
for (i = 0; i < 7; i++) {
ActiveTexture(GL_TEXTURE1 + i);
BindTexture(GL_TEXTURE_2D, default_texs[i]);
BindTexture(GL_TEXTURE_RECTANGLE, default_texs[i + 7]);
BindTexture(GL_TEXTURE_3D, default_texs[i + 14]);
}
ActiveTexture(GL_TEXTURE1);
glCreateClearTex(gl_target, gl_texfmt, gl_format, gl_type, scale_type,
texture_width >> xs, texture_height >> ys, 128);
if (mipmap_gen)
TexParameteri(gl_target, GL_GENERATE_MIPMAP, GL_TRUE);
ActiveTexture(GL_TEXTURE2);
glCreateClearTex(gl_target, gl_texfmt, gl_format, gl_type, scale_type,
texture_width >> xs, texture_height >> ys, 128);
if (mipmap_gen)
TexParameteri(gl_target, GL_GENERATE_MIPMAP, GL_TRUE);
ActiveTexture(GL_TEXTURE0);
BindTexture(gl_target, 0);
}
if (is_yuv || custom_prog)
{
if ((MASK_NOT_COMBINERS & (1 << use_yuv)) || custom_prog) {
if (!GenPrograms || !BindProgram) {
mp_msg(MSGT_VO, MSGL_ERR, "[gl] fragment program functions missing!\n");
} else {
GenPrograms(1, &fragprog);
BindProgram(GL_FRAGMENT_PROGRAM, fragprog);
}
}
update_yuvconv();
}
glCreateClearTex(gl_target, gl_texfmt, gl_format, gl_type, scale_type,
texture_width, texture_height, 0);
if (mipmap_gen)
TexParameteri(gl_target, GL_GENERATE_MIPMAP, GL_TRUE);
resize(d_width, d_height);
ClearColor( 0.0f,0.0f,0.0f,0.0f );
Clear( GL_COLOR_BUFFER_BIT );
if (SwapInterval && swap_interval >= 0)
SwapInterval(swap_interval);
return 1;
}
