Request: Support for read+write variable pairs

[Asmageddon]

Even if it were to be something unwieldy like separate buffer0_in and buffer0_out variables, I would very, very much so like to request that. For both textures and other data types.

[AntonPieper]

What exactly do you mean by that?

Something like this?

uniform sampler2D backbuffer; // [bind = fragColor]
uniform sampler2D backbuffer2; // [bind = somethingElse]

out vec4 fragColor; // [output]
out vec2 somethingElse;

Or are you asking for a feature like ShaderToy's passes?

[Asmageddon]

Yes, exactly. Something that allows the transfer of information from one frame to the next.

Multiple passes would also be great to have, but that's not my current request.