What's New in the API in Maya 2018.4 Update
Specify a different shader for selection vs. draw for render items
You can now implement a custom selection shader using the MShaderinstance interface. Previously, a plugin could only implement custom selection shader by the MPxShaderOverride interface, which requires a custom DG shader and doesn't fit use cases such as a custom shape.
For Viewport 2.0 to identify and create a MShaderInstance for Maya HW selection:
- With
MShaderManager::getEffectsBufferShader() and
MShaderManager::getEffectsFileShader() the technique in the effects buffer/file needs to declare the technique annotation:
string keyword = "mayaHWSelection";
- With
MShaderManager::getFragmentShader(), the fragment or the top-level fragment graph needs to declare the XML element:
<keyword value="mayaHWSelection"/>
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