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Simple deferred rendering demonstration with OpenTK.
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Lab5
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Readme.md

OpenTK Deferred Rendering Sample

by Evan Todd

Hardware Requirements

Support for Multiple Render Targets and Shader Model 2

Mac Requirements

Mono, MonoDevelop, and OpenTK.

Windows Requirements

Visual Studio and OpenTK.

Download OpenTK from here.

Controls

Spacebar - Toggle display mode

This sample demonstrates a very basic deferred renderer. While a forward renderer normally calculates lighting as it renders the scene, a deferred renderer saves information about the materials in the scene to a number of buffers. These are later sampled to calculate the lighting, and then composited into a final image. There are many advantages to the technique, but probably the most useful feature is its ability to render large amounts of lights at relatively low cost, irrespective of the triangular complexity of the scene.

This sample renders a simple textured cube with 100 deferred point lights. Press spacebar to view the buffers used to generate the scene. The buffers are (clockwise from the top left): normals, light accumulation, depth, and diffuse.

The renderer is greatly simplified in the interest of time. Real high dynamic range is essential for a real deferred renderer. This sample simulates it by storing scaled values in the lighting buffer.

The MIT License (MIT)

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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