opengl functions tutorial

Lesson 1Image Font: In this lesson, we will create some fonts Based on 2D images that can be scaled but cannot be rotated and always oriented to the front, but as a basic display, I think it is enough.Welcome to another tutorial. This time I will teach you how to use bitmap fonts. Maybe you will say to yourself, "What is the difficulty of displaying text on the screen ?". But once you try it, you will know that it is really not that easy. Of course, y

the source color and set the source factor corresponds.In the three-dimensional mixing, not only the source and target factors should be considered, but also the depth buffer should be considered. All opaque objects must be drawn before the translucent objects are drawn. Before you draw a translucent object, you also need to set the depth buffer to read-only, otherwise a screen error may occur.void Glbindvertexarray (Gluint array);Binding Vertex Array objectsArray: Specifies the name of the ver

the font Createglwindow (), and wndproc () functions remain unchanged In the winmain () function, we need to add a new key control.The following code checks whether the up arrow is pressed. If scroll is greater than 0, we will reduce it by 2. If (Keys [vk_up] (scroll> 0) // is the up arrow pressed?{Scroll-= 2; // If yes, reduce the value of scroll.} If the downward arrow is held down and scroll is smaller than 32 * (maxtoken-9), the scroll value is

selected to be drawnGldrawelements rendering elements in array dataGldrawpixels writes a group of pixels to the frame bufferGledgeflag defines an array of edge flagsGledgeflagpointer defines an array of edge flagsGlenable, gldisable turn on or off OpenGL special featuresGlenableclientstate,gldisableclientstate opening or closing an array, respectivelyGlevalcoord solving one-and two-dimensional mapsGLEVALMESH1,GLEVALMESH2 solving grids of one-and two-

Go from "translation" Nehe OpenGL tutorialObjectiveStatement, this Nehe OpenGL tutorial series of articles by 51 blog yarin Translation (2010-08-19), this blog for reprint and a little collation and modification. Thank you for compiling Nehe's OpenGL pipeline tutorial, as w

OpenGL ES 08-do not use the mix color of mr. Bucket 1 Please note: I am not very satisfied with the status when I write this tutorial, so please do not care if you have any questions. If something goes wrong, don't worry. I will continue to explain it in section 2nd. Who is mr. Bucket? That's my kitchen mixer! (In English, mixer and mixed colors are the same.) Of course we are not talking about my kitchen m

Address: http://ogldev.atspace.co.uk/www/tutorial02/tutorial02.html When writing OpenGL programs, we usually need the glew library, which encapsulates various OpenGL extensions for our convenience. We can call the glew initialization function in the main function, and then we can query whether OpenGL extensions can be used. For

programmable pipelines. Before parsing the OpenGL ES example in Android apidemos, it is necessary to provide a simple development tutorial for OpenGL ES development, which can help developers who have never been in touch with 3D development.ProgramDevelopers understand the basic concepts and methods of OpenGL develop

Go from "translation" Nehe OpenGL tutorialObjectiveStatement, this Nehe OpenGL tutorial series of articles by 51 blog yarin Translation (2010-08-19), this blog for reprint and a little collation and modification. Thank you for compiling Nehe's OpenGL pipeline tutorial, as w

on the screen and is independent from the platform, please let me know, I will rewrite a tutorial on font. We started from the typical code of Lesson 1 and added the stdio. h header file for standard input/output operations. In addition, the stdarg. h header file is used to parse text and convert variables into text. Add the math. h header file so that we can use the sin and cos functions to move text on t

", glenable and so on directly to maintain the related state of pipeline processing, glenableclientstate maintenance is to enter the state before the assembly line. At the early stage of Tl, the vertex data of the program is learned and accepted for processing. As to how the vertices came-glvertex, or Gldrawarray, the pipeline does not need to know-this is the client's task, so whether to use the vertex array (as a state whether it needs to be started) is determined by the client. The glcalllist

Function category: * GL core: implements basic functions, such as shape description and matrix conversion. It is prefixed with GL; * Utility: Provides texture support, complex curve and surface drawing, and prefix with Glu; * Auxiliary functions (Auxiliary): simple window management, input event processing, etc., prefixed with aux; * Dedicated WGL functions