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Notification phase for io remapper

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Adds a notification phase to the io remapper.
The idea behind this is to give the user a
chance to group uniforms and/or in/out variables
for a better pipeline layout sharing for vulkan.

Change-Id: I7492421085a4156ed3534f01d906ab390d73a623
This commit is contained in:
t.jung 2017-04-28 15:54:57 +02:00
parent 7cca140956
commit f1bfeec73d
2 changed files with 53 additions and 0 deletions
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13
glslang/Public/ShaderLang.h
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@ -463,6 +463,13 @@ class TIoMapper;
// 5) all uniforms with set but no binding defined
// 6) all uniforms with no binding and no set defined
//
// mapIO will use this resolver in two phases. The first
// phase is a notification phase, calling the corresponging
// notifiy callbacks, this phase ends with a call to endNotifications.
// Phase two starts directly after the call to endNotifications
// and calls all other callbacks to validate and to get the
// bindings, sets, locations, component and color indices.
//
// NOTE: that still limit checks are applied to bindings and sets
// and may result in an error.
class TIoMapResolver
@ -491,6 +498,12 @@ public:
// Should return a value >= 0 if the current color index should be overridden.
// Return -1 if the current color index (including no index) should be kept.
virtual int resolveInOutIndex(EShLanguage stage, const char* name, const TType& type, bool is_live) = 0;
// Notification of a uniform variable
virtual void notifyBinding(EShLanguage stage, const char* name, const TType& type, bool is_live) = 0;
// Notification of a in or out variable
virtual void notifyInOut(EShLanguage stage, const char* name, const TType& type, bool is_live) = 0;
// Called by mapIO when it has finished the notify pass
virtual void endNotifications() = 0;
};
// Make one TProgram per set of shaders that will get linked together. Add all