Shader Talk - Conversations on GLSL

[Pryme8]

Struggling to Convert Global Position to Shadow Map position

I am trying to get a global position to the shadow map uv position for a ShadowGenerator Texture. float sampleSunShadow(vec3 pos){ vec4 posFromSun = vec4(pos, distance(sunPosition, pos)); vec3 clipSpace = posFromSun.xyz / posFromSun.w; vec2 uv = 0.5 * clipSpace.xy + vec2(0.5); if (uv.x < 0. || uv.x > 1.0 || uv.y < 0. || uv.y > 1.0) { return 1.0; } return texture2D(sunShadowMap, uv).x; } This is what I am currently doing, but it seems to n…

Depth Sorted Ray Marching PostProccess

Thanks to a little help from @Evgeni_Popov with my math and depth calculations, we were able to create a depth sorted post effect that will allow raymarched scenes to be rendered with your normal scene. https://playground.babylonjs.com/#6Z7SIZ#16 Lots of work to go into it still, but here eventually I plan on passing all of BJS standard material stuff to the ray marched surfaces and you will be able to hopefully not tell the difference for general purposes. -TODO: Volumetric Absorption Ref…