具有多重采样的 OpenGL 多渲染目标 FBO - 要求

Question

创建多采样 FBO 时，是否所有附加的目标纹理都需要是多采样纹理？

Answer 1

Section 9.4.2 Whole Framebuffer Completeness规范说明:

The framebuffer object bound to target is said to be framebuffer complete if all the following conditions are true:
[...]

• The value of RENDERBUFFER_SAMPLES is the same for all attached renderbuffers; the value of TEXTURE_SAMPLES is the same for all attached textures; and, if the attached images are a mix of renderbuffers and textures, the value of RENDERBUFFER_SAMPLES matches the value of TEXTURE_SAMPLES.

所以是的，所有附加的纹理和渲染缓冲区的样本数必须相同。