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It is possible to modify the depth map test to produce shadows with a soft edge by using a range of values (based on the proximity to the edge of the shadow) rather than simply pass or fail. The shadow mapping technique can also be modified to draw a texture onto the lit regions, simulating the effect of a projector. The picture above captioned ...
Nvidia Gameworks consists of several main components: VisualFX: For rendering effects such as smoke, fire, water, depth of field, soft shadows, HBAO+, TXAA, FaceWorks, and HairWorks. PhysX: For physics, destruction, particle and fluid simulations. OptiX: For baked lighting and general-purpose ray-tracing.
Path tracing naturally simulates many effects that have to be specifically added to other methods (conventional ray tracing or scanline rendering), such as soft shadows, depth of field, motion blur, caustics, ambient occlusion, and indirect lighting. Implementation of a renderer including these effects is correspondingly simpler.
Shadows – the effect of obstructing light; Soft shadows – varying darkness caused by partially obscured light sources; Reflection – mirror-like or highly glossy reflection; Transparency (optics), transparency (graphic) or opacity – sharp transmission of light through solid objects
A further example is the so-called soft shadow, in which the transition between the illuminated and shadowed part of the scene is out of focus. Specifically, one way to achieve this effect stencil buffer is to multiply the volume of the shadow, and that as the copies, respectively are scaled according to a geometric series with a low ...
For example, soft shadows can be rendered by distributing shadow rays over the light source area. Glossy or blurry reflections and transmissions can be rendered by distributing reflection and transmission rays over a solid angle about the mirror reflection or transmission direction.
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3D animation of ambient occlusion enabled on the animation to the right. In the absence of hardware-assisted ray traced ambient occlusion, real-time applications such as computer games can use screen space ambient occlusion (SSAO) techniques such as horizon-based ambient occlusion including HBAO and ground-truth ambient occlusion (GTAO) as a faster approximation of true ambient occlusion ...