How to use texture as depth attachment?

https://stackoverflow.com/questions/14769570

opengl
framebuffer
render-to-texture
depth-buffer
deferred-shading

07-03-2022
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Question

I have a framebuffer with multiple render targets. All of them are textures and not renderbuffers. How can I use the A component of a RGBA texture as depth attachment? I want to use the default depth test.

Solution

The alpha is not a depth component. And only images who's formats have a depth component can be bound to GL_DEPTH_ATTACHMENT.

And before you ask, there is no RGB_DEPTH_COMPONENT format.

There's no reason you can't create a texture with GL_DEPTH_COMPONENT24.

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