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Fix T55620 Artifacts with SSR and planar reflection 

Was caused by 0 pixel extent rays which did not trace at all. Bumping the
threshold for degenerate rays fixes it.
This commit is contained in:
Clément Foucault 2019-03-15 23:31:41 +01:00
parent 86646dab7c
commit 795bddf2bd
Notes: blender-bot 2023-02-14 05:41:55 +01:00 
Referenced by issue #55620, Artifacts with SSR and planar reflection
1 changed files with 1 additions and 1 deletions
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source/blender/draw/engines/eevee/shaders/raytrace_lib.glsl
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@ -91,7 +91,7 @@ void prepare_raycast(
/* If the line is degenerate, make it cover at least one pixel
* to not have to handle zero-pixel extent as a special case later */
ss_step.xy += vec2((dot(ss_step.xy, ss_step.xy) < 0.000001) ? 0.001 : 0.0);
ss_step.xy += vec2((dot(ss_step.xy, ss_step.xy) < 0.000003) ? 0.001 : 0.0);
/* Make ss_step cover one pixel. */
ss_step /= max(abs(ss_step.x), abs(ss_step.y));