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Rendering method of light ambient occlusion map, method and device for generating effect map

An ambient light occlusion and rendering technology, applied in the field of graphics rendering, can solve the problems of low operation efficiency and affect operation stability, and achieve the effect of improving operation efficiency, ensuring operation stability and rendering effect.

Active Publication Date: 2021-07-23
上海灵犀互动娱乐有限公司
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Problems solved by technology

The limitation of the above technology is that when evaluating the light shielding degree of each point in the scene, a space conversion process is required, the operation efficiency is not high, and the operation stability is affected

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  • Rendering method of light ambient occlusion map, method and device for generating effect map
  • Rendering method of light ambient occlusion map, method and device for generating effect map

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Embodiment Construction

[0084] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only the technical solutions of the present invention. Some, but not all, embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0085] Screen Space Ambient Occlusion (hereinafter referred to as SSAO) is a graphics rendering technology that simulates the scene receiving ambient light occlusion in a post-processing manner, and is often used in the field of real-time rendering in game development. The SSAO in the prior art calculates the ambient light occlusion value (hereinafter ...

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Abstract

The invention discloses a rendering method of a light environment occlusion map, a method and a device for generating an effect map. The rendering method includes: obtaining a rendering model located in the camera space; projecting each pixel of the rendering model in the camera space to the screen space through perspective transformation; calculating the ambient light occlusion value of each pixel in the screen space; according to each pixel The ambient occlusion values ​​of the points, generating an ambient occlusion map. This technical solution projects each pixel of the rendering model in the scene from the camera space to the screen space, and calculates the ambient light occlusion value in the screen space, which saves the space back and forth transformation process, thereby saving the number of instructions when the GPU is running and improving the operating efficiency. .

Description

technical field [0001] The present invention relates to the technical field of graphics rendering, in particular, the present invention relates to a rendering method of a light environment occlusion map, a method and a device for generating an effect map. Background technique [0002] Ambient Occlusion (AO) is a global illumination algorithm that enhances the layering of geometric models in the scene by improving the shadows in the rendered scene, thereby simulating the effect of global illumination, but due to its calculation It is complex and resource-intensive and cannot be applied to the field of real-time rendering. The ScreenSpace Ambient Occlusion (SSAO) method is a real-time rendering technology widely used in the field of game development. Its technical core is to calculate based on the depth buffer of the screen space and evaluate each point in each scene by means of discrete sampling. degree of light shading. [0003] The screen space ambient light shading metho...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T15/50G06T1/20
CPCG06T1/20G06T15/50
Inventor 洪智标
Owner 上海灵犀互动娱乐有限公司
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