From 28410476576c7dd5adb1e40e8c6f29e19cd4585a Mon Sep 17 00:00:00 2001 From: Hugo Locurcio Date: Wed, 11 Jan 2023 20:08:33 +0100 Subject: Clarify the difference between uniforms and per-instance uniforms in docs --- doc/classes/GeometryInstance3D.xml | 5 ++++- doc/classes/ShaderMaterial.xml | 3 ++- 2 files changed, 6 insertions(+), 2 deletions(-) (limited to 'doc/classes') diff --git a/doc/classes/GeometryInstance3D.xml b/doc/classes/GeometryInstance3D.xml index 1ae4718536..127c5daf95 100644 --- a/doc/classes/GeometryInstance3D.xml +++ b/doc/classes/GeometryInstance3D.xml @@ -21,7 +21,10 @@ - Set the value of a shader parameter for this instance only. + Set the value of a shader uniform for this instance only ([url=$DOCS_URL/tutorials/shaders/shader_reference/shading_language.html#per-instance-uniforms]per-instance uniform[/url]). See also [method ShaderMaterial.set_shader_parameter] to assign a uniform on all instances using the same [ShaderMaterial]. + [b]Note:[/b] For a shader uniform to be assignable on a per-instance basis, it [i]must[/i] be defined with [code]instance uniform ...[/code] rather than [code]uniform ...[/code] in the shader code. + [b]Note:[/b] [param name] is case-sensitive and must match the name of the uniform in the code exactly (not the capitalized name in the inspector). + [b]Note:[/b] Per-instance shader uniforms are currently only available in 3D, so there is no 2D equivalent of this method. diff --git a/doc/classes/ShaderMaterial.xml b/doc/classes/ShaderMaterial.xml index 1af7ac4fc5..a2346822e5 100644 --- a/doc/classes/ShaderMaterial.xml +++ b/doc/classes/ShaderMaterial.xml @@ -23,7 +23,8 @@ Changes the value set for this material of a uniform in the shader. - [b]Note:[/b] [param param] must match the name of the uniform in the code exactly. + [b]Note:[/b] [param param] is case-sensitive and must match the name of the uniform in the code exactly (not the capitalized name in the inspector). + [b]Note:[/b] Changes to the shader uniform will be effective on all instances using this [ShaderMaterial]. To prevent this, use per-instance uniforms with [method GeometryInstance3D.set_instance_shader_parameter] or duplicate the [ShaderMaterial] resource using [method Resource.duplicate]. Per-instance uniforms allow for better shader reuse and are therefore faster, so they should be preferred over duplicating the [ShaderMaterial] when possible. -- cgit v1.2.3