Commit: c2535dff902641ab331301fb8edc788c2c132a34
Author: Clément Foucault
Date: Fri Oct 23 02:00:41 2020 +0200
Branches: blender-v2.83-release
https://developer.blender.org/rBc2535dff902641ab331301fb8edc788c2c132a34
Fix T81942 EEVEE: Reflection Plane glitch with low clip distances
This was happening because the raytrace was not even being performed
due to the tracing line being too small after frustum clipping.
===================================================================
M source/blender/draw/engines/eevee/shaders/raytrace_lib.glsl
===================================================================
diff --git a/source/blender/draw/engines/eevee/shaders/raytrace_lib.glsl
b/source/blender/draw/engines/eevee/shaders/raytrace_lib.glsl
index f88cfdf3787..41395758d92 100644
--- a/source/blender/draw/engines/eevee/shaders/raytrace_lib.glsl
+++ b/source/blender/draw/engines/eevee/shaders/raytrace_lib.glsl
@@ -104,9 +104,10 @@ void prepare_raycast(vec3 ray_origin,
/* Clip to segment's end. */
max_time /= length(ss_step.xyz);
-
/* Clipping to frustum sides. */
max_time = min(max_time, line_unit_box_intersect_dist(ss_start.xyz,
ss_step.xyz));
+ /* Avoid no iteration. */
+ max_time = max(max_time, 1.0);
/* Convert to texture coords. Z component included
* since this is how it's stored in the depth buffer.
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