SubsurfaceScatteringShader.java 文件源码

@Override
public void begin(Camera camera, RenderContext context) {
    program.begin();
    viewProjTrans.set(camera.combined);

    program.setUniformf(u_cameraPosition, camera.position.x, camera.position.y, 
            camera.position.z, 1);
    program.setUniformf(u_worldLightDir, lightDirection.x, lightDirection.y, lightDirection.z, 0);

    context.setDepthTest(GL20.GL_LEQUAL);
    context.setCullFace(GL20.GL_BACK);
    context.setBlending(shouldFadeEnds ? true : false, GL20.GL_SRC_ALPHA, GL20.GL_ONE_MINUS_SRC_ALPHA);

    texture.bind(0);
    program.setUniformi(u_texture, 0);

    specLUT.getTexture().bind(1);
    program.setUniformi(u_specularPowerLUTTexture, 1);

}