From 789169d70d24ff2c1c9804f0149d0508de6dfcfa Mon Sep 17 00:00:00 2001
From: Enrique
Date: Mon, 6 Jan 2025 00:50:11 +0100
Subject: First upload

---
 display/display.c | 104 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 104 insertions(+)
 create mode 100755 display/display.c

(limited to 'display/display.c')

diff --git a/display/display.c b/display/display.c
new file mode 100755
index 0000000..56b9d80
--- /dev/null
+++ b/display/display.c
@@ -0,0 +1,104 @@
+#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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