webgl map

[Getting started with WebGL] 21. Light source from parallel Light Source: webgl Light SourceNote: The article is translated from http://wgld.org/, the original author shanbenya (doxas). If I have additional instructions in the article, I will add [lufy:]. In addition, the research on webgl is not in-depth enough, and some professional words are required, if the t

Detects WebGL and browser compatibility when using Three.js (detecting WebGL and browser compatibility with Three.js)The beautiful Life of the Sun Vulcan (http://blog.csdn.net/opengl_es)This article follows "Attribution-non-commercial use-consistent" authoring public agreementReprint Please keep this sentence: Sun Vulcan's Beautiful Life-this blog focuses on Agile development and mobile and IoT device resea

[Getting started with WebGL] 22nd, the light from the environmental light source, and the webgl Light Source Note: The article is translated from http://wgld.org/, the original author shanbenya (doxas). If I have additional instructions in the article, I will add [lufy:]. In addition, the research on webgl is not in-depth enough, and some professional words are r

[Getting started with WebGL] 15th, color the polygon (specify the vertex color), and webgl Vertex Note: The article is translated from http://wgld.org/, the original author shanbenya (doxas). If I have additional instructions in the article, I will add [lufy:]. In addition, the research on webgl is not in-depth enough, and some professional words are required, if

Although HTML5 has not yet been finalized yet, HTML5-based applications have blossomed everywhere on the Internet. As a result, webgl, which is composed of 3D rendering, has gradually moved away from the image of the dark girl show. Neither 3D developers nor those who grasp the technology development direction can avoid the impact of this new technology trend. 3D display in WebGIS currently uses a browser-specific 3D rendering plug-in for scenario di

Twgl.js is a small, WebGL helper library. The purpose of this JS library is to make the WebGL API more concise and readable. The WebGL API is very verbose, and setting shaders, buffers, attributes, and uniforms requires a lot of code. A simple glow cube effect may require more than 60 code calls in WebGL. Using TWGL ca

[Getting started with WebGL] Twenty-four, complementary coloring, webgl getting started with complementary coloring Note: The article is translated from http://wgld.org/, the original author shanbenya (doxas). If I have additional instructions in the article, I will add [lufy:]. In addition, the research on webgl is not in-depth enough, and some professional word

[Getting started with WebGL] Twenty-three, the illumination effect of reflected light, And webgl illumination Note: The article is translated from http://wgld.org/, the original author shanbenya (doxas). If I have additional instructions in the article, I will add [lufy:]. In addition, the research on webgl is not in-depth enough, and some professional words are

actual situation completely inconsistent. 2.WebGL Matrix and other state preservation and recovery is JS implementation, in many objects, computational capacity should not be neglected. and Jsperf in the case also did not consider, and the actual situation completely inconsistent. 3.drawImage and Drawarrays Direct comparison does not make sense, even regardless of the creation of textures and shader, even regardless of the switch of multiple

information and then row the color information, so it has an offset of 0.Enablevertexattribarray tells WebGL that we want to use a vertex array. By default, constant vertex data is used, but constant vertex data cannot be used because each of our vertices has its own different location information.After the vertex position information is passed in, we pass in the vertex color information:var avertexcolor = gl.getattriblocation (program, "Avertexcolor

interesting, folding Google Maps and Street View rendering like a real paper map. Because shaders can be used for all HTML content, the elements of CSS shaders rendering include ordinary tables, SVG, even HTML5 video, and so on.CSS is now ready to make some 3D animations, but the addition of a key player to the shader will make the technology more flexible and programmability-enhancing. CSS shaders can be used in conjunction with Adobe Edge to create

Use JavaScript and WebGL to draw the Earth "translation"Original translation: Using JavaScript and WebGL to draw the Earth "translation"WebGL is probably the most interesting of all of our known html5api, and with this API we can create cool 3D scenes in the browser. This article will give you a complete demonstration of how cool is implemented.In particular, thi

, Rasterization is also controllable.After the Tu Yuanshong is complete, we need to "paint" the model, and this part of the work is run on the GPU "chip shader" to complete.It is also an OpenGL ES program where the model looks like a texture (color, diffuse map, etc.), lights, etc. are computed by the element shader.The following is a simple piece-element shader code:Precision Mediump float; void Main (void) { The Gl_fragcolor is the color value

the model framework, the model framework to determine the user click event, the HTTP protocol to the server to make a request. The server receives the request information to be processed by the SSH framework, the framework accesses the data to the database, and then returns the data to the client, the client populates the data into the model, and the data-populated model is rendered by the browser that supports HTML5.Our most common or used Webgis system is Google

The current mainstream technologies for web-vector rendering include SVG, VML, and WebGL. In contrast, VML is an older technology that, although not a standard, is widely used by earlier IE browsers (IE9) and Microsoft Office, and is now far from the browser battlefield. So there's only SVG and WebGL left to choose from. SVG is a subset of XML, adhering to the principle that a label corresponds to a data, w

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

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,

shader and assign the color of the Texel to the element. 3.gl.createtexture () Create a texture object to store the texture image. 4.gl.deletetexture () Use Textur to delete a texture object. If you delete a texture object that has been deleted, no error will be made and no effect will occur. 5.gl.pixelstorei (pname, param) Handles the loaded image in the way specified by PName and Param. Parameters PName: Can be one of the following. Gl. UNPACK_FLIP_Y_WEBGL, the Y-axis of the image is reversed

WebGL has ushered in a new era of 3D rendering of web pages. It allows direct 3D Content Rendering in the canvas without using any plug-ins. Do you feel particularly surprised to see it here, webGL has a good Chinese tutorial, that is, the first link in the reference below, so I will not make a shift here. The content below is just a brief summary of what I learned, interested friends can use

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. very important to initializeFrom this time onwards, we started to deal with WebGL. The first is the initializ