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Add basic support for instanced renderables

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We can now specify an "instance count" per renderable during creation. 
This instance count applies to all render primitives in the 
Renderable.

This will simply draw the renderable "instance count" times. A new
method available to vertex shaders, getInstanceIndex(), allows the
material to discriminate the instances and adjust the position/transform
accordingly.

Typically this is used for particle systems.
This commit is contained in:
Mathias Agopian
2022-02-14 13:55:59 -08:00
committed by Mathias Agopian
parent d13ccd1c26
commit 1d6aeb5de1
10 changed files with 76 additions and 9 deletions
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7
android/filament-android/src/main/cpp/RenderableManager.cpp
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@@ -221,6 +221,13 @@ Java_com_google_android_filament_RenderableManager_nBuilderLightChannel(JNIEnv*,
builder->lightChannel(channel, (bool)enable);
}
extern "C" JNIEXPORT void JNICALL
Java_com_google_android_filament_RenderableManager_nBuilderInstances(JNIEnv*, jclass,
jlong nativeBuilder, jint instanceCount) {
RenderableManager::Builder *builder = (RenderableManager::Builder *) nativeBuilder;
builder->instances(instanceCount);
}
// ------------------------------------------------------------------------------------------------
extern "C" JNIEXPORT void JNICALL