WrapperFrameBufferRenderer.kt
/*
* Copyright 2022 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package androidx.graphics.lowlatency
import android.opengl.EGLConfig
import android.opengl.EGLSurface
import android.os.Build
import android.view.Surface
import androidx.annotation.RequiresApi
import androidx.graphics.opengl.GLRenderer
import androidx.graphics.opengl.egl.EGLManager
import androidx.graphics.opengl.egl.EGLSpec
/**
* Wrapper Renderer around [FrameBufferRenderer] that skips rendering on a given condition
*/
@RequiresApi(Build.VERSION_CODES.O)
internal class WrapperFrameBufferRenderer<T>(
private val frameBufferRenderer: FrameBufferRenderer,
private val shouldRender: () -> Boolean
) : GLRenderer.RenderCallback {
override fun onSurfaceCreated(
spec: EGLSpec,
config: EGLConfig,
surface: Surface,
width: Int,
height: Int
): EGLSurface? = frameBufferRenderer.onSurfaceCreated(spec, config, surface, width, height)
override fun onDrawFrame(eglManager: EGLManager) {
if (shouldRender()) {
frameBufferRenderer.onDrawFrame(eglManager)
}
}
}