General purpose graphics processing unit. Allows offloading of parallelizable computational tasks to the GPU.

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OpenGL textureGather and DirectX gather

These functions sample multiple RGBA pixels but return only a single component. OpenGL: https://www.opengl.org/sdk/docs/man/html/textureGather.xhtml DirectX: ...
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HSLS shader for floating point (grayscale) textures

I have the following problem: Input data is a float[], representing a 2D texture with floating point values (I need the dynamic range to be larger than 255), e.g. size 100x200. I would like to ...