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OpenGL coordinate conversion (good text-clear version)

The following article details the conversion of coordinates in OpenGL, which is clear and unambiguous. But the so-called rendering pipeline includes only Modelview transformations and projection transformations, which I think is not the case. That's just the angle of the coordinates. For example, what vertex coloring, rasterization, sent to the frame cache are not involved. Original address: http://blog.csdn.net/zhulinpptor/article/details/5897102 1.

Technology for OpenGL video playback

This document records the technology of OpenGL video playback. In the previous article, we introduced a simple way to use OpenGL to display video. But that's not the essence of OpenGL's display of video technology. Like Direct3D, OpenGL's better way to display video is through textures (Texture). This article describes the techniques that OpenGL uses to display v

OpenGL library function list OpenGL core function library

Gldrawelements renders elements in the array data Gldrawpixels writes a set of pixels to the frame buffer. Gledgeflag defines an edge flag Array Gledgeflagpointer defines an array of edge signs Glenable and gldisable enable or disable the special functions of OpenGL Glableclientstate and gldisableclientstate open or close arrays respectively Glevalcoord solves one-dimension and two-dimensional textures Glevalmesh1, glevalmesh2 solves one-dimensional

OpenGL templates Mac Cmake OpenGL (Glut) template

Some of the features that you often use to make a template, have a light effect, you can zoom in with the mouse, around the origin point of the rotating coordinate systemwatermark/2/text/ahr0cdovl2jsb2cuy3nkbi5uzxqvchlhbmcxotg5/font/5a6l5l2t/fontsize/400/fill/i0jbqkfcma==/ Dissolve/70/gravity/southeast ">Main.cpp#include CMakeLists.txtCmake_minimum_required (VERSION 2.6) Project (OpenGL) Find_package (OpenGL

Another step toward OpenGL [1]: relearning OpenGL

To say that graphics is not incomprehensible, but does not have systematic learning and review. So far, it is still a treasure. If you want to write something casually, you must have a book on the side. Another trip to the Tiger Hill is to round out the dream this year and get something out of it. > OpenGL diagnosis Tool When developing WebService, I felt that the packet capture tool had a lot of benefits. Therefore, graph development started from the

OpenGL programming in QT (1) steps required for OpenGL programming in QT

I. Preface I spent some time studying ogre at home during the summer vacation, basically a wiki tutorial every day. After finishing the preliminary tutorial, I felt that I could not proceed, because there were a lot of things that I had to understand, so I wanted to get in touch with something more "low-end. Open-source, of course, OpenGL is required. If we use QT for cross-platform applications, we will spend some time studying it. But at that time,

Some suggestions for converting OpenGL program into OpenGL ES: gldrawarray and gldrawelements

It took four days to transfer an FPS game engine fly3d to OpenGL ES. As we all know, ES is intended for mobile devices, so for efficiency, it performs a lot of screening and subtraction on OpenGL, throwing away all inefficient functions such as (glbegin) and throwing away some of the drawn types such as gl_polygon, Here we will share with you the alternative method of using gldrawarray to draw polygon.And

The difference between OpenGL and glrotatef () in OpenGL ES

The cube project has been around for nearly a month. The last important function module is gesture recognition, this will add a winning weight for the "2010 Google Android app development China College Student Challenge. Gesture Recognition is simple, just reload the method. The trouble is that glrotatef (float angle, float X, float y, float Z) in OpenGL ES ). This function is different from the glrotatef (float angle, float X, float y, float Z) funct

[OpenGL] install the OpenGL 2.0 library (Mesa Library) in the Linux system on the MIPs platform)

: # Default drivers if test "x $ dri_dirs" = "xyes"; then dri_dirs = "i915 i965 nouveau r200 radeon swrast" fi changed: # default drivers if test "x $ dri_dirs" = "xyes"; then dri_dirs = "nouveau r200 radeon swrast" fi Remove the Default Driver configuration, because my graphics card is integrated with ATI 3200hd graphics card, so you only need to configure the option with me. Otherwise, configure cannot pass../Config -- Build = mips64el-unknown-linux-gnu -- prefix =/usr/-- enable-gles1 -- the c

NeHe OpenGL Lesson43-FreeType Fonts in OpenGL

This samples shows us how to create anti-aliased font. the WGL font bitmap saved with binaries image, that means only one bit per pixel. this will cause some aliased problem as you zoom in the font. the font edge become very obvious and sharper. to address this issue we cocould use more bits like 8 bits to store one pixel, we cocould have some gray values to make the edge become transparent and more smooth. and GUNFreeTypeLibrary used to create such kind of fonts for

OpenGL learning notes (2)-a general OpenGL framework

# Include ThisCodeThe general explanation is as follows: 1. First, add the necessary header file glut. H is included to use the function library provided by OpenGL. 2. display is a callback function written by the Program , used for drawing in a window. After registering it with the help of the main function, each time the image in the window needs to be refreshed, the display function we wrote is called. 3. The gluinitwindowsize function

When SDL is used with OpenGL, the UV coordinates of OpenGL textures are reversed up and down.

Write by nine days Yan Ling (jtianling) -- blog.csdn.net/vagrxie Discuss newsgroups and documents Same paragraphProgramIn SDL with OpenGL, it is correct when glfw is used and Windows API is used to add OpenGL.As follows:Glbegin (gl_quads );Gltexcoord2f (0.0, 0.0); glvertex3f (-1.0,-1.0, 0.0 );Gltexcoord2f (1.0, 0.0); glvertex3f (1.0,-1.0, 0.0 );Gltexcoord2f (1.0, 1.0); glvertex3f (1.0, 1.0, 0.0 );Gltexcoord2f (0.0, 1.0); glvertex3f (-1.0, 1.0, 0.0

OpenGl basics 2. opengl

OpenGl basics 2. opengl Basic graphic rendering process 1. create GLSurfaceView 2. initialize Renderer 3. onSurfaceCreated (), onSurfaceChanged (), onDrawFrame () Three Methods 4. coloring tool (vertex coloring tool, chip coloring tool) 5. vertex color texture 6. draw Projection OpenGL only provides two projection methods: One is normal Projection, and the other

Shadergen V3.0 duplicates and extends OpenGL API fixed function behavior using OpenGL shading langua

Http://developer.3dlabs.com/downloads/shadergen/ 3dlabs 'shadergen is a tool that automatically generates OpenGL shading language shaders that duplicate fixed function OpenGL behavior. the new V3.0 generates thousands of additional shaders with support for separate specular lighting, multiple texture objects, multiple texture coordinate sets and the texture combine environment mode. the purpose of shader

Basic OpenGL graphics programming-basic use of OpenGL auxiliary Libraries

OpenGL is an open system independent of any window system or operating system. Although it contains many graphical functions, it does not have window functions or functions that read events from the keyboard or mouse. Therefore, it is quite difficult for beginners to write a complete graphic program. In addition, OpenGL graphic functions only provide the basic ry: points, lines, and polygon. Therefore, it i

Using BCB to prepare OpenGL applications

First, Introduction OpenGL is an open three-dimensional graphics software package, it is independent of the window system and the operating system, the application based on it can be easily ported between various platforms, and convenient two-dimensional, three-dimensional graphics algorithm, to ensure the correctness and reliability of the algorithm. There are two dynamic link libraries in the Windows\System directory of WIN98 or WIN95: Opengl32.dl

OpenGL------Version History

Until today, there are nine versions of official OpenGL. (1.0, 1.1, 1.2, 1.2.1, 1.3, 1.4, 1.5, 2.0, 2.1)The launch of each OpenGL release adds some new features that were popular or badly needed at the time. at the same time, OpenGL is backwards compatible , meaning that if a feature is present in a lower version, it will also be present in later versions. This f

At Intel™The processor transplanted OpenGL * games to Android * (Part 2)

This article is the second part of the two sections, discussing the obstacles to porting OpenGL games to Google Android. Before you start a game implant project (including differences in OpenGL extensions, floating point support, texture compression formats, and the GLU Library), you should recognize these obstacles. It also describes how to use OpenGL ES to set

Create OpenGL render context in OpenGL.

OpenGL is a graphics library based on customer/server and pipeline. That is, an applicationProgram(Customer) writes various commands and data to the pipeline. This command and data will be temporarily saved, and the graphics library (server) will not start to process them until it receives a special command, and send the processing result to the user through a pipeline.Therefore, the basic structure of the OpenGL

OpenGL Drawing Line---OpenGL Learning notes (iii) __OPENGL

There are three kinds of entities in OpenGL: dots, lines, triangles. For Lines, OpenGL provides us with three ways to draw lines: ① Draw Segment (lines): The so-called line segment is not connected to some of the set of lines. ② Draw Line (Line_strip): A line that is connected but not closed. ③ Draw line Ring (Line_loop): The end-connected and closed line. The first step is to implement the line segme

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