webgl course

Note: The article is translated from http://wgld.org/, the original author Sambonja 広 (doxas), the article if there is my additional instructions, I will add [Lufy:], in addition, The WEBGL research is not deep enough, some professional words, if the translation is wrong, you are welcome to correct. something that repeats repeatedly.This is the 11th article, because only said a few basic things, so far even a polygon has not been drawn out. Ah ah ah .

November 30: Angle is a graphic project that Google has developed for Windows computers and has now passed an important certification milestone to improve the graphics recognition of some browsers. Google launched the angle in March 2010, is a WEBGL graphics aids, borrowed new 3D graphics technology to enhance the browser experience. Yesterday, Google programmer Vangelis Kokkevis announced that angle has passed the OpenGL 2.0 certification test suite

Note: The article is translated from http://wgld.org/, the original author Sambonja 広 (doxas), the article if there is my additional instructions, I will add [Lufy:], in addition, The WEBGL research is not deep enough, some professional words, if the translation is wrong, you are welcome to correct. The results of this demo runbenefits of the Model coordinate transformation matrixLast time, several models were drawn by manipulating the model coordinat

The previous article mentions two restrictions on mapping:1. Cross-domain security restrictionsSimilar to Ajax, but there is no test of the Security configuration file (some XML) under the root directory. Of course, not surprisingly, the local browse (file protocol) call relative path picture is also not possible. So, even testing can only be done under one web platform.2, Picture format problemsThere is a hint on the MDN:Https://developer.mozilla.org

The previous chapter is the second chapter of the main study is the WEBGL implementation of the first assignment in WebGL, but not practical later by defining the attribute and uniform storage qualifiers to the JavaScript data into WebGL, the approximate process is 1, In JS to define the storage qualifier 2, in JS get canvas in JS to get hidden browser compatibil

Android supported WebGL from 5.0, and I encountered some 5.0 devices not supported in the actual development, the original chromium to run GPUs unstable or compatibility problems of the device will disable WebGL.On the Android platform you can access Chrome://gpu by installing Chorme Browser, find reset notification strategy This configuration item does turn off WEBGL support, if the value is 0x8252 it supp

1. Clear the drawing area Emptying the plot area fills the canvas with the specified background color and sets the background color using Gl.clearcolor. Gl.clearcolor (red, green, blue, alpha). The color value of OpenGL returns is 0-1. Call the Gl.clear () function to empty the drawing area with the background color specified by Clearcolor. Gl.clear (G.color_buffre_bit), cleans up the drawing area, actually cleans the color buffer (colour buffers), passing the GL. Color_buffer_bit is telling

The WEBGL program uses both HTML and JavaScript on the screen to create and display three-dimensional graphics. The newly introduced Because the Get the WebGL drawing contextvar gl = getwebglcontext (canvas, true);Getwebglcontext (element, [debug]);Gets the WebGL drawing context, or if the Debug property is turned on, an error message is displayed in the console

This paper illustrates the method of WebGL using FBO to finish the cube mapping effect. Share to everyone for your reference, specific as follows: This main record WebGL some of the basic points, incidentally also learn how to use FBO and environment mapping. First look at the effect map (need to support Webgl,chrome, Firefox, IE11). The main realization proc