Source
void releaseRenderTexture(RenderTexture renderTexture) {
for (int i = 0; i < _activeRenderTextures.length; i++) {
if (identical(renderTexture, _activeRenderTextures[i])) {
_activeRenderTextures[i] = null;
_renderingContext.activeTexture(gl.TEXTURE0 + i);
_renderingContext.bindTexture(gl.TEXTURE_2D, null);
}
}
}