Question

所以，我试图将我的openGLES 1.0代码移植到OpenGLES 2.0（GLKit）。基本概念是你可以在3D空间中走动。

我正在努力的是根据我的相机位置移动一个物体（控制线连接等）

- (void)glkView:(GLKView *)view drawInRect:(CGRect)rect {

    glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    self.baseEffect.transform.modelviewMatrix = GLKMatrix4MakeLookAt(eye[0], eye[1], eye[2],center[0],  center[1], center[2], 0.0, 1, 0.0);
    [self.baseEffect prepareToDraw];

    self.cube.effect.transform.modelviewMatrix = self.baseEffect.transform.modelviewMatrix;
    self.cube.effect.transform.projectionMatrix = self.baseEffect.transform.projectionMatrix;

    // Used to scale stuff based on screen res
    static float roation = 0;
    self.cube.rotation =  GLKVector3Make(0, roation, 0);
    [self.cube drawWithRotationWithRenderMode:RenderTexture];

    [self handleTouches];
}

我所困扰的是基于相机的立方体渲染（我相信我需要像setIdentyM

- (void)drawWithRotationWithRenderMode:(RenderMode)renderMode
{
    [EAGLContext setCurrentContext:APP_DELEGATE.context];

    float alpha = 1;
    float doNotRender = NO;

    GLKMatrix4 current = GLKMatrix4Identity;
    current = GLKMatrix4Translate(current, position.x, position.y, position.z);
    current = GLKMatrix4Scale(current, scale.x, scale.y, scale.z);
    self.effect.transform.modelviewMatrix = current;

Answer 1

这就是baseEffect在使用之前不是init的问题：（

iOS：OpenGL 2.0 ES在对象中移动

1 个答案: