int getFreeSlot(int set, int base)
{
TSlotSet::iterator at = findSlot(set, base);
if (at == slots[set].end())
return reserveSlot(set, base);
// look in locksteps, if they not match, then there is a free slot
for (; at != slots[set].end(); ++at, ++base)
if (*at != base)
break;
return reserveSlot(set, base);
}
int resolveBinding(EShLanguage /*stage*/, const char* /*name*/, const glslang::TType& type, bool is_live) override
{
int set;
if (type.getQualifier().hasSet())
set = type.getQualifier().layoutSet;
else
set = 0;
if (type.getQualifier().hasBinding()) {
if (type.getBasicType() == glslang::EbtSampler) {
const glslang::TSampler& sampler = type.getSampler();
if (sampler.isImage())
return reserveSlot(set, baseImageBinding + type.getQualifier().layoutBinding);
if (sampler.isPureSampler())
return reserveSlot(set, baseSamplerBinding + type.getQualifier().layoutBinding);
if (sampler.isTexture())
return reserveSlot(set, baseTextureBinding + type.getQualifier().layoutBinding);
}
if (type.getQualifier().storage == EvqUniform)
return reserveSlot(set, baseUboBinding + type.getQualifier().layoutBinding);
if (type.getQualifier().storage == EvqBuffer)
return reserveSlot(set, baseSsboBinding + type.getQualifier().layoutBinding);
} else if (is_live && doAutoMapping) {
// find free slot, the caller did make sure it passes all vars with binding
// first and now all are passed that do not have a binding and needs one
if (type.getBasicType() == glslang::EbtSampler) {
const glslang::TSampler& sampler = type.getSampler();
if (sampler.isImage())
return getFreeSlot(set, baseImageBinding);
if (sampler.isPureSampler())
return getFreeSlot(set, baseSamplerBinding);
if (sampler.isTexture())
return getFreeSlot(set, baseTextureBinding);
}
if (type.getQualifier().storage == EvqUniform)
return getFreeSlot(set, baseUboBinding);
if (type.getQualifier().storage == EvqBuffer)
return getFreeSlot(set, baseSsboBinding);
}
return -1;
}
int getFreeSlot(int set, int base, int size = 1)
{
TSlotSet::iterator at = findSlot(set, base);
if (at == slots[set].end())
return reserveSlot(set, base, size);
// look for a big enough gap
for (; at != slots[set].end(); ++at) {
if (*at - base >= size)
break;
base = *at + 1;
}
return reserveSlot(set, base, size);
}
