I have an image and a sampler declared in a shader as follow
layout(binding = 5) uniform isampler2D heightmap; layout(binding = 3) uniform writeonly uimage2D info;
Which are correctly bound using the following code
glBindTextureUnit(5, heightmapId); glBindImageTextures(3, 1, &infoId);
For introspection purposes, I am trying to retrieve the binding points of these objets, 5 and 3, but I didn't find any way to do this for uniforms. Is it possible using the API?
I first tried to use glGetProgramResourceIndex, since it worked with storage buffers, but it doesn't the results are get are incorrect, as if the explicit binding was ignored.
I then looked at glGetProgramResourceiv, but the binding related enums are only available for storage buffers and atomic counters.