From 07beb326fa7221eba55372ea511137ef099a15ea Mon Sep 17 00:00:00 2001 From: Hui Wang <wanghehv@sjtu.edu.cn> Date: Wed, 12 Apr 2023 13:55:47 +0000 Subject: [PATCH] Update environment_lighting.md --- docs/pathtracer/environment_lighting.md | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/docs/pathtracer/environment_lighting.md b/docs/pathtracer/environment_lighting.md index 684ca8b..785830f 100644 --- a/docs/pathtracer/environment_lighting.md +++ b/docs/pathtracer/environment_lighting.md @@ -8,6 +8,10 @@ <video width="750" height="500" controls><source src="videos/Task7_EnvMap.mp4" type="video/mp4"></video>  +**Note**: The phi/theta direction in the video may be confusing, so please refer to the axis direction in the following figure. We will fix the video soon. + + + The final task of this assignment will be to implement a new type of light source: an infinite environment light. An environment light is a light that supplies incident radiance (really, the light intensity dPhi/dOmega) from all directions on the sphere. Rather than using a predefined collection of explicit lights, an environment light is a capture of the actual incoming light from some real-world scene; rendering using environment lighting can be quite striking. The intensity of incoming light from each direction is defined by a texture map parameterized by phi and theta, as shown below. -- GitLab