PIXELFORMATDESCRIPTOR: key data structure in Microsoft OpenGL rendering

PIXELFORMATDESCRIPTOR: key data structure in Microsoft OpenGL rendering

keyword: pixelformatdescriptor example

critical demo

1. WGL and the Wiggle Functions in C++

The simple fact that OpenGL is only a graphics API means that any user interaction, or things like screen and window issues needs to be handled by the operating system. Most operating systems come with a set of extensions that tie OpenGL together with user interaction and window management. This tends to make our lives a little bit easier, but only if we know how to take advantage of this option. In Windows this set of functions are called the wiggle functions. Each of these functions is prefixed with wgl.

2. Programming OpenGL with MFC

very good class note .

3. An example of an OpenGL animation loop using the Win32 API.

An example of an OpenGL animation loop using the Win32 API. Also demonstrates palette management for RGB and color index modes and general strategies for message handling.

4. 01.) Creating OpenGL 3.3 Window

Welcome to OpenGL 3.3+ tutorials series. In this series, you will learn how to use OpenGL the new way. This way is little bit more difficult than the way before, now OpenGL relies on you to do many things. But don't get scared, these tutorials will explain stuff slowly and step-by-step you will build a good basis to think the new way.

5. OpenGL 3

This series covers step-by-step learning of OpenGL 3.3 and later. As you may know, in OpenGL 3.0, most of old stuff has been deprecated (the fixed pipeline), including the easy-to-use rendering using glBegin() / glEnd() functions and in OpenGL 3.2 removed from core profile. Programming the new way may be more difficult than old way, but the results are worth learning it, trust me. These tutorials are also forward-compatible with later versions of OpenGL.

6. OpenGL 4

Do you want to learn modern OpenGL from the scratch and you have no idea where to start? Then you're in the right place !

This series covers step-by-step learning of OpenGL 4 and later. There is no deprecated OpenGL stuff involved and the minimum OpenGL context used in the tutorials is 4.4.

As a fundamental library to handle basic stuff like windows creation, I decided to stick with GLFW Library, seems to be most widely used and is properly maintained.

All the tutorials in this series are hosted in their own repository on GitHub, so simply clone this repository and open for example Visual Studio Solution packed within and build them right away :

https://github.com/michalbb1/opengl4-tutorials-mbsoftworks

7. Megabyte Softworks

Hello fellow readers, I made some updates to the code base of the OpenGL4 tutorials lately. Most importantly, I have finally updated the solution to the Visual Studio 2019 and also made several changes in the whole code, that should lead to better code quality . Be sure to check it in my OpenGL4 tutorials GitHub repository:

Megabyte Softworks OpenGL4 Tutorials GitHub Repository

Documents

8. Using OpenGL on Windows: A Simple Example

Using OpenGL on Windows: A Simple Example Any OpenGL program for Windows has to take care of some window-dependent setup. There are several ways this setup can be done, for example, using the GLUT library or using GDI and WGL directly. This guide focuses on using the Windows OpenGL API directly.

9. Introduction to OpenGL on Windows

The technical articles OpenGL I: QuickStart and Introducing the OpenGL Interface (both available online from Microsoft) explain in some detail how an OpenGL program fits inside a Windows environment. (See "Background Reading" for bibliographical information.) This chapter provides only minimal introductory information. Figure 1-1 illustrates the relation between OpenGL and GDI, the Windows graphics interface. The rest of the section first provides an Architectural Overview of Windows and OpenGL, then briefly defines OpenGL and Windows Terminology used in the rest of this document.

10. Full Table of Contents

it contains all techniques I need in WGL. Appendix is really good resource to test it.

11. Appendix A: Code Example for Index Texture Extension

test texture in Win32 app.

12. Open GL Super Bible

Welcome to OpenGL SuperBible! The first time I ever heard of OpenGL was at the 1992 Win32 Developers Conference in San Francisco. Windows NT 3.1 was in early beta (or late alpha) and many vendors were present, pledging their future support for this exciting new platform. Among them was a company called Silicon Graphics, Inc. (SGI). They were showing off their graphics workstations and playing video demos of special effects from some popular movies. NT was running on MIPS processors—now owned by SGI—but their primary purpose in this booth was to promote a new 3D graphics standard called OpenGL. It was based on SGI’s proprietary IRIS GL and was fresh out of the box as a graphics standard. Significantly, Microsoft was pledging future support for OpenGL in Windows NT.

13. Pixel Formats

Drawing in a window with OpenGL also requires that you select a pixel format. Like the rendering context, the pixel format is not really a part of OpenGL per se. It is an extension to the Win32 API (specifically, to the GDI) to support OpenGL functionality. The pixel format sets a device context’s OpenGL properties, such as color and buffer depth, and whether the window is double-buffered. You must set the pixel format for a device context before it can be used to create a rendering context. Here are the two functions you will need to use:.

14. PIXELFORMATDESCRIPTOR structure (wingdi.h)

The PIXELFORMATDESCRIPTOR structure describes the pixel format of a drawing surface.

15. Creating an OpenGL Context (WGL)

OpenGL Context Creation is the part of initialization that creates a fully realized OpenGL implementation. You need to go through this process to use OpenGL

16. Tutorial: OpenGL 3.1 The First Triangle (C++/Win)

This is just a short tutorial about drawing primitives in OpenGL 3.x without using deprecated functionality. The code uses Visual Studio and a link to download a freeGLUT version is available.

17. nickrolfe/windows_modern_opengl_context.c

Sample code showing how to create a window using a modern OpenGL core profile context without any libraries other than the standard Win32 wglXXX calls.

18. Course 24: OpenGL and Window System Integration

Pixel Formats & Palettes Pixel formats specify the properties of OpenGL contexts. Pixel formats in conjunction with palettes are the gateway through which an appropriate context for an application is created. Their use is described below.

19. OpenGL 4.x Initialization in Windows without a Framework

If you want to open an OpenGL window, most of tutorials and books will tell you to use GLFW, FreeGLUT or SDL framework. Just call glfwInit(), glfwCreateWindow() and you are done. However, if you need to write a size-limited executable or simply don’t want to create another dependency, you have to take care of this by yourself. This is how to do it “the hard way”.

Normally, as with most of the libraries, you would #include , add opengl32.lib to linker dependencies and just use all the features of the modern OpenGL in your program, maybe with some kind of additional glInit() call. Well, let me tell you something my friend: “One does not simply initialize OpenGL”.

20. OpenGL Drawing Example
21. Using OpenGL on Windows: A Simple Example

the same book as RIT website.

22. Introduction to OpenGL 4.1 - Tutorial 05

Debug output GL_ARB_debug_output allows the GL to notify applications when various events occur that may be useful during application development and debugging. These events are represented in the form of enumerable messages with a human-readable string representation.

This is a paragraph.

24. OpenGL Distilled

OpenGL Distilled ISBN: 0321336798 EAN: 2147483647Year: 2007 Pages: 123Authors: Paul Martz

25. Section 8.4. Microsoft Windows

Microsoft Windows uses an interface called WGL to provide OpenGL support in Windows. The WGL functions connect OpenGL to the Microsoft Windows windowing system.

WGL doesn't have a formal specification. Although the Microsoft Developer Network (http://msdn.microsoft.com) has some documentation, many WGL developers obtain information from WGL extension specifications at the OpenGL Extension Registry (http://oss.sgi.com/projects/ogl-sample/registry/). Because the WGL interface is very similar to GLX, you can also refer to the GLX specification and reinterpret it as though it were referring to WGL. Finally, OpenGL vendors typically provide additional documentation to describe their Microsoft Windows implementations. Check with your OpenGL vendor for more information.

Microsoft Windows supports rendering OpenGL to onscreen windows (as created with the Win32 CreateWindow() function) and to DIBs resident in system memory. Many OpenGL hardware vendors support pbuffers through an extension to WGL called WGL_ARB_pbuffer. This section discusses only rendering to a window.

26. SetPixelFormat fail when using WGL_SAMPLE_BUFFERS_ARB / WGL_SAMPLES_ARB

I decided to add MSAA support into my application and therefor I checked what's up to do. The examples I found always refer to WGL_SAMPLE_BUFFERS_ARB / WGL_SAMPLES_ARB in the pixelformatdescriptor to do that. I am using glew right now:

27. Getting a window's pixel format

I have created an OpenGL application running on Windows. Is there any way I can query information about the pixel format of my current rendering window? (the window was created using the GLFW library)

28. GetPixelFormat function (wingdi.h)

The GetPixelFormat function obtains the index of the currently selected pixel format of the specified device context.

29. greensquare.cpp is an open-source example

greensquare.cpp is an open-source example //screensaver by Rachel Grey, lemming@alum.mit.edu.

30. Setting up OpenGL in C++Builder

Abstract: This article by JT is a quick introduction to setting up OpenGL drawing on a TForm's TCanvas

31. Warning: That file was not part of the compilation database. It may have many parsing errors.

Warning: That file was not part of the compilation database. It may have many parsing errors.

32. Copyright (c) Nate Robins, 1997.

Copyright (c) Nate Robins, 1997..

33. Tutorial 14: Win32 Window

This is a paragraph.This example only runs under MS Windows and demonstrates that Irrlicht can render inside a win32 window. MFC and .NET Windows.Forms windows are possible, too.

In the beginning, we create a windows window using the windows API. I'm not going to explain this code, because it is windows specific. See the MSDN or a windows book for details.

34. Win32 API Tutorials

Before diving into the first tutorial the following might help explain why we prefer to create our Windows applications using the Win32 API.

Through writing an application using straight Win32 you will gain a better understanding of how the API works, reduce bloat and have more control over the appearance and behavior of your applications. You will be interacting with the windows operating system at the lowest level possible and gain access to features not available when using Microsoft Foundation Classes (MFC) or a visual compiler.

To give an example I would like you to think back to when you last saw a multicolored window, one that didn't use the current theme colors. Most likely you have rarely seen one; the reason for this is that there are no simple functions to set the colors of a window or its controls. This is a blatant attempt by Microsoft to make all applications conform to a standard appearance. By failing to provide an easy way to set the colors of a window and its controls Microsoft can be somewhat assured that few anarchistic looking applications will be produced. To overcome this limitation and many others we will need to know the Win32 API in depth; then we can create a better way to design and manage our windows through the use of owner-drawn controls and object orientated programming, which are covered later in the tutorials.

In this series of tutorials I will start by showing you how to create a standard single window application and progress through to encapsulating the main window and other controls in C++ classes.

35. OpenGL Part 10- Anti-Aliasing

This is a paragraph.

36. OpenGL context creation never chooses pixel format

This is a paragraph.

This is a paragraph.