mirror of
https://github.com/baldurk/renderdoc.git
synced 2026-05-06 01:50:38 +00:00
baldurk
a50445781f
* Also in many places OpenGL is now advertised as full support, since it is pretty close by now and needs people to jump on it full-time and use it in anger.
73 lines
5.0 KiB
XML
73 lines
5.0 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
|
|
<topic id="6d0b6532-6da2-485d-85cd-e83e8c9e0183" revisionNumber="1">
|
|
<developerConceptualDocument xmlns="http://ddue.schemas.microsoft.com/authoring/2003/5" xmlns:xlink="http://www.w3.org/1999/xlink">
|
|
<introduction>
|
|
<para>This page details how to edit shaders. This applies both to
|
|
<link xlink:href="a00964a1-733f-4288-a79e-c28238bc6018">custom visualisation shaders</link> for the
|
|
<link xlink:href="2c540574-0b81-4a40-8119-ba0283fddf41" />, but can also be used to temporarily replace or
|
|
edit a shader used in the actual scene.</para>
|
|
</introduction>
|
|
<section address="EditCustom">
|
|
<title>How to edit a custom shader</title>
|
|
<content>
|
|
<para><link xlink:href="a00964a1-733f-4288-a79e-c28238bc6018">Custom visualisation shaders</link> allow you to define
|
|
your own transformation on any texture you're viewing before it is displayed. Mostly this is useful for decoding
|
|
packed or custom-format data, or displaying some data in a more visually intuitive fashion.</para>
|
|
<para>These shaders live as .hlsl/.glsl files in <codeInline>%APPDATA%\RenderDoc\</codeInline>, and can be edited in your
|
|
editor of choice, any changes saved will be reloaded. Note however that there is currently no way to see the
|
|
compile warnings or errors produced. This is probably best for when you have an existing shader to drop-in.</para>
|
|
<para>To edit a shader inside RenderDoc simply click the edit button
|
|
<mediaLinkInline><image xlink:href="page_white_edit"/></mediaLinkInline> when you have selected your custom shader
|
|
for use. This will launch a new window with the custom shader and any changes you make to this shader will be
|
|
saved to the .hlsl/.glsl file and compiled and reflected in the texture viewer as long as you have that custom shader
|
|
selected.</para>
|
|
</content>
|
|
</section>
|
|
<section address="EditLive">
|
|
<title>How to edit a scene shader</title>
|
|
<content>
|
|
<para>RenderDoc allows you to edit a shader used in the capture and make changes to it and see the effects in real-time.</para>
|
|
<para>To launch the shader editor, go to the pipeline stage you wish to change in the <link xlink:href="A44E2304-6C11-451D-89C4-0A7397F5D1C6" />
|
|
windows, and click on the edit button <mediaLinkInline><image xlink:href="page_white_edit"/></mediaLinkInline>
|
|
next to the shader.</para>
|
|
<para>Note: this feature is intended to be used when shader debug info is available and the hlsl source can be used.
|
|
If the hlsl isn't available, RenderDoc will generate a stub function with the input and output signatures available from
|
|
the reflection data that you can fill in if you wish.</para>
|
|
<para>Any changes to the shader will affect any drawcall using this shader, not just the currently-selected drawcall.
|
|
The changes will persist until the edit window is closed.</para>
|
|
|
|
<alert class="caution">
|
|
<para>One unfortunate artifact of how the shader debug info works, not all #included hlsl files will come along with the debug info,
|
|
only those files that contain compiled code. RenderDoc automatically replaces any #includes
|
|
to missing files with just an empty comment, but unfortunately this can lead to compile errors in unused code.</para>
|
|
<para>This can also interact badly with another artifact - macro definitions passed directly to the compiler are not
|
|
included in the debug info and so RenderDoc can't include them when recompiling. If you rely on any defines, you
|
|
will need to add them manually to the top of your root hlsl file.</para>
|
|
</alert>
|
|
|
|
</content>
|
|
</section>
|
|
<section address="ShaderEditor">
|
|
<title>Using the built-in shader editor</title>
|
|
<content>
|
|
<para>When you have launched the shader editor, the main window will be filled with the hlsl of your shader.
|
|
In here you can make edits and changes with the basic controls and syntax highlighting available with the
|
|
Scintilla editor.</para>
|
|
<para>To compile the shader and apply your changes, either click the save button in the toolbar or press
|
|
Ctrl-S. This will compile the shader and apply it, any warnings and errors will be added to the box below
|
|
the main source.</para>
|
|
<para>Custom shaders are built with a simple set of flags, any shaders from the scene will be compiled with
|
|
the flags that were originally passed to the compiler.</para>
|
|
|
|
<alert class="caution">
|
|
<para>If there are errors compiling a visualisation shader, it will be removed from the texture viewer and normal RGB display
|
|
will be used until you fix the error.</para>
|
|
</alert>
|
|
|
|
<para>In addition, when editing visualisation shaders a button will be available to insert several useful snippets
|
|
for custom shaders with the pre-defined variables that can be bound. For more detail, see
|
|
<link xlink:href="a00964a1-733f-4288-a79e-c28238bc6018" /></para>
|
|
</content>
|
|
</section>
|
|
</developerConceptualDocument>
|
|
</topic> |