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#include "display.h"
int InitializeWindowContext(char className[], char windowName[], WNDPROC WindowProc, WindowContext *WContext){
WContext->windowClass = (WNDCLASSEX){
.cbSize = sizeof(WNDCLASSEX),
.style = CS_OWNDC | CS_HREDRAW | CS_VREDRAW,
.lpfnWndProc = WindowProc,
.hInstance = GetModuleHandle(NULL),
.hCursor = LoadCursor(NULL, IDC_CROSS),
.lpszClassName = className
};
if(RegisterClassEx(&WContext->windowClass) == 0){
return 1;
}
WContext->window = CreateWindowEx(
0,
WContext->windowClass.lpszClassName,
windowName,
WS_OVERLAPPEDWINDOW | WS_VISIBLE | WS_MAXIMIZE,
CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
NULL,
NULL,
GetModuleHandle(NULL),
NULL
);
if(WContext->window == NULL){
return 1;
}
WContext->windowDC = GetDC(WContext->window);
if(WContext->windowDC == NULL){
return 1;
}
return 0;
}
int InitializeOpenGL(HWND window, HGLRC *renderingContext){
int error = 0;
int pfdAttribs[] = {
WGL_DRAW_TO_WINDOW_ARB, GL_TRUE,
WGL_SUPPORT_OPENGL_ARB, GL_TRUE,
WGL_DOUBLE_BUFFER_ARB, GL_TRUE,
WGL_PIXEL_TYPE_ARB, WGL_TYPE_RGBA_ARB,
WGL_COLOR_BITS_ARB, 32,
WGL_DEPTH_BITS_ARB, 24,
WGL_STENCIL_BITS_ARB, 8,
WGL_FRAMEBUFFER_SRGB_CAPABLE_ARB, GL_TRUE,
0
};
HDC windowDC = GetDC(window);
if(windowDC == NULL){
error = 1;
goto end;
}
UINT pixelFormat, numFormats;
if(wglChoosePixelFormatARB(
windowDC,
pfdAttribs,
NULL, 1,
&pixelFormat,
&numFormats
) == FALSE){
error = 1;
goto end;
}
PIXELFORMATDESCRIPTOR pixelFormatDescriptor;
if(SetPixelFormat(
windowDC,
pixelFormat,
&pixelFormatDescriptor
) == FALSE){
error = 1;
goto end;
}
int contextAttribs[] = {
WGL_CONTEXT_MAJOR_VERSION_ARB, 4,
WGL_CONTEXT_MINOR_VERSION_ARB, 3,
0
};
*renderingContext = wglCreateContextAttribsARB(windowDC, NULL, contextAttribs);
if(renderingContext == NULL){
error = 1;
goto end;
}
if(wglMakeCurrent(windowDC, *renderingContext) == FALSE){
error = 1;
goto end;
}
end:
ReleaseDC(window, windowDC);
return error;
}
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