#Soft shadows in cheetah3d how to#

To apply the soft shadows to the final scene we use just a regular lighting shader except that it takes as input the blurred imageĪnd at the end of the pixel shader we multiple the color result by the projected blur image to get soft shadows.

With the black and white texture blurred we now have the following texture result:Īs you can see the shadow edges are now blurred creating the soft shadows. The reason we render to a texture is so that we can perform the next step which is to blur the black and white image.įor this tutorial we will perform a regular blur like we did in the blur tutorial (Tutorial 36). So rendering our scene will now produce a black and white image as follows:Īlso we render the black and white scene to a render to texture instead of to the back buffer. Shadow areas as pure black and the illuminated areas as pure white. Instead of using the shader to render the shadowed scene with lighting as it previously did it will now instead just render To create soft shadows we first need to modify the shadow shader. With that said one of the main advantages of using shadow maps is that we can easily produce soft shadows to fix the jagged shadow edges. One of the issues with shadow maps is the lack of precision in the texture used for the shadow map.Įven high resolution textures such as 1024x1024 (as was used in the shadow mapping tutorial) still create shadows with jagged edges.įor example looking at the edge of the shadow for the sphere we get the following visual artifact: The code in this tutorial is based on the shadow mapping tutorial.

#Soft shadows in cheetah3d how to#

This tutorial will cover how to implement soft shadows in DirectX 11 using HLSL and C++.