Possible Implementation of Deep Shadow Map in OpenGL

Before reading this post, I assume the reader already know the implementation of traditional shadow map in OpenGL: http://www.opengl-tutorial.org/intermediate-tutorials/tutorial-16-shadow-mapping/ Pixar movie Brave use deep shadow map approach to render hair shadow (as well as its self-shadow): Possible Implementation in OpenGL: Use 3D texture as shadow map depth texture.  The reason …

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