Automatically use negative mipmap LOD bias when TAA and/or FXAA are enabled

This improves texture sharpness when TAA and/or FXAA are enabled,
without requiring manual user intervention.

1 files changed, 2 insertions, 1 deletions

diff --git a/doc/classes/Viewport.xml b/doc/classes/Viewport.xml
index 93e7e20f5a..0071834ccd 100644
--- a/doc/classes/Viewport.xml
+++ b/doc/classes/Viewport.xml
@@ -266,7 +266,8 @@
 		<member name="snap_2d_vertices_to_pixel" type="bool" setter="set_snap_2d_vertices_to_pixel" getter="is_snap_2d_vertices_to_pixel_enabled" default="false">
 		</member>
 		<member name="texture_mipmap_bias" type="float" setter="set_texture_mipmap_bias" getter="get_texture_mipmap_bias" default="0.0">
-			Affects the final texture sharpness by reading from a lower or higher mipmap (also called "texture LOD bias"). Negative values make mipmapped textures sharper but grainier when viewed at a distance, while positive values make mipmapped textures blurrier (even when up close). To get sharper textures at a distance without introducing too much graininess, set this between [code]-0.75[/code] and [code]0.0[/code]. Enabling temporal antialiasing ([member ProjectSettings.rendering/anti_aliasing/quality/use_taa]) can help reduce the graininess visible when using negative mipmap bias.
+			Affects the final texture sharpness by reading from a lower or higher mipmap (also called "texture LOD bias"). Negative values make mipmapped textures sharper but grainier when viewed at a distance, while positive values make mipmapped textures blurrier (even when up close).
+			Enabling temporal antialiasing ([member use_taa]) will automatically apply a [code]-0.5[/code] offset to this value, while enabling FXAA ([member screen_space_aa]) will automatically apply a [code]-0.25[/code] offset to this value. If both TAA and FXAA are enbled at the same time, an offset of [code]-0.75[/code] is applied to this value.
 			[b]Note:[/b] If [member scaling_3d_scale] is lower than [code]1.0[/code] (exclusive), [member texture_mipmap_bias] is used to adjust the automatic mipmap bias which is calculated internally based on the scale factor. The formula for this is [code]log2(scaling_3d_scale) + mipmap_bias[/code].
 			To control this property on the root viewport, set the [member ProjectSettings.rendering/textures/default_filters/texture_mipmap_bias] project setting.
 		</member>