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WebGL is a web standard created to display 3D graphics in any browser. It uses the Graphics Processing Unit (GPU) of a computer to render interactive 2D and 3D graphics without the need for any plugins.
WebGL is based on OpenGL, a software interface for graphics hardware. OpenGL is an industry standard for 3D graphics and is used in video games, CAD (computer-aided design) software, and other 3D applications.
WebGL is designed to be compatible with all major browsers on all major platforms, including mobile devices. It is also supported by major web graphics libraries such as THREE.js and SceneJS.
WebGL is a low-level API that enables developers to create high-performance 3D graphics without having to rely on browser plugins. WebGL is used by major websites and applications such as Google Maps and Facebook 3D posts.
How Does WebGL Work Under The Hood?
WebGL is based on the OpenGL ES 2.0 specification and uses the same graphics pipeline as OpenGL. However, there are some key differences.
First, WebGL does not have access to the full OpenGL feature set. This is because the OpenGL specification is too low-level for the web. WebGL only exposes a limited set of features that can be safely exposed to the web.
Second, WebGL does not allow you to directly access the GPU. This is for security reasons. Instead, you have to use the WebGL API to access the GPU.
Third, WebGL does not allow you to directly access the framebuffer. This is for performance reasons. WebGL uses a technique called “double buffering” which allows it to swap out the back buffer with the front buffer. This prevents artifacts from being displayed to the user.
Fourth, WebGL does not allow you to directly access the depth buffer. This is for performance reasons. WebGL uses a technique called “depth testing” which allows it to automatically update the depth buffer.
Fifth, WebGL does not allow you to directly access the stencil buffer. This is for performance reasons. WebGL uses a technique called “stencil testing” which allows it to automatically update the stencil buffer.
So how does WebGL work under the hood?
Next, the browser loads the WebGL shader library.
Then, the browser creates a WebGL context.
After that, the browser loads the WebGL vertex buffer objects.
Finally, the browser renders the WebGL scene.
How Does WebGL Enable 3D Graphics In The Web Browser?
WebGL is a web standard created to display 3D graphics in any web browser. It uses the Graphics Processing Unit (GPU) of a computer’s graphics card to render interactive 3D graphics without the need for any plugins.
WebGL is based on the OpenGL ES 2.0 specification and is able to render complex 3D scenes at 60 frames per second.
One of the advantages of using WebGL for 3D graphics is that it is hardware accelerated. This means that the graphics are rendered using the GPU, which is much faster than the CPU.
Another advantage of using WebGL is that it is cross-platform. This means that the same code will run on any platform that supports WebGL, such as Windows, Mac, Linux, and Android.
A real-life example of WebGL in action is Google Maps. Google Maps uses WebGL to render 3D buildings and terrain.
If you’re still curious about how WebGL works, feel free to leave a comment below.
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