Shadow Casting Point Light Demo

[Simulan]

Ah. It was my understanding that this functionality had never been demonstrated here, and that there were some conflicting interactions in terms of using set_light() and the same shader internal shadow map. I can change my wording on this and just say it’s the first PBR-style point light shadow effect available in a demo/sample program here, if that’s acceptable.

@rdb

PointLights can not cast shadows. Only DirectionalLight and Spotlight can, and of those two it’s better to use Spotlight because it’s slightly easier to setup and less likely to produce certain types of artifacts.

@rdb

As you say, they cannot coexist unfortunately. You get that error because shadowMapCube is not a recognised name. It must be named shadowMap

The way around this is to pass the point light as a separate variable rather than via the setLight mechanism (which reads them into p3d_LightSource array). You can just pass the PointLight NodePath directly to a named shader input with setShaderInput, and use a different struct definition with cube shadow map to read in that shader input in the shader.