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Add per-descriptor-set IO mapping shift values.

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This PR adds the ability to provide per-descriptor-set IO mapping shift
values.  If a particular binding does not land into a per-set value,
then it falls back to the prior behavior (global shifts per resource class).

Because there were already 6 copies of many different methods and internal
variables and functions, and this PR would have added 6 more, a new API is
introduced to cut down on replication and present a cleaner interface.
For the global (non-set-specific) API, the old entry points still exist
for backward compatibility, but are phrased internally in terms of the
following.

    // Resource type for IO resolver
    enum TResourceType {
        EResSampler,
        EResTexture,
        EResImage,
        EResUbo,
        EResSsbo,
        EResUav,
        EResCount
    };

Methods on TShader:

    void setShiftBinding(TResourceType res, unsigned int base);
    void setShiftBindingForSet(TResourceType res, unsigned int set, unsigned int base);

The first method replaces the 6 prior entry points of various spellings, which
exist now in depreciated form.  The second provides per-resource-set functionality.
Both accept an enum from the list above.

From the command line, the existing options can accept either a single shift value as
before, or a series of 1 or more [set offset] pairs.  Both can be provided, as in:

    ... --stb 20 --stb 2 25 3 30 ...

which will use the offset 20 for anything except descriptor set 2 (which uses 25) and
3 (which uses 30).
This commit is contained in:
LoopDawg 2017-10-17 19:27:14 -06:00
parent 7d67c6cbc2
commit 08a14422c1
9 changed files with 523 additions and 159 deletions
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29
glslang/Public/ShaderLang.h
View file

@ -324,6 +324,17 @@ bool InitializeProcess();
// Call once per process to tear down everything
void FinalizeProcess();
// Resource type for IO resolver
enum TResourceType {
EResSampler,
EResTexture,
EResImage,
EResUbo,
EResSsbo,
EResUav,
EResCount
};
// Make one TShader per shader that you will link into a program. Then provide
// the shader through setStrings() or setStringsWithLengths(), then call parse(),
// then query the info logs.
@ -347,13 +358,17 @@ public:
void setEntryPoint(const char* entryPoint);
void setSourceEntryPoint(const char* sourceEntryPointName);
void addProcesses(const std::vector<std::string>&);
void setShiftSamplerBinding(unsigned int base);
void setShiftTextureBinding(unsigned int base);
void setShiftImageBinding(unsigned int base);
void setShiftUboBinding(unsigned int base);
void setShiftUavBinding(unsigned int base);
void setShiftCbufferBinding(unsigned int base); // synonym for setShiftUboBinding
void setShiftSsboBinding(unsigned int base);
// IO resolver binding data: see comments in ShaderLang.cpp
void setShiftBinding(TResourceType res, unsigned int base);
void setShiftSamplerBinding(unsigned int base); // DEPRECATED: use setShiftBinding
void setShiftTextureBinding(unsigned int base); // DEPRECATED: use setShiftBinding
void setShiftImageBinding(unsigned int base); // DEPRECATED: use setShiftBinding
void setShiftUboBinding(unsigned int base); // DEPRECATED: use setShiftBinding
void setShiftUavBinding(unsigned int base); // DEPRECATED: use setShiftBinding
void setShiftCbufferBinding(unsigned int base); // synonym for setShiftUboBinding
void setShiftSsboBinding(unsigned int base); // DEPRECATED: use setShiftBinding
void setShiftBindingForSet(TResourceType res, unsigned int set, unsigned int base);
void setResourceSetBinding(const std::vector<std::string>& base);
void setAutoMapBindings(bool map);
void setAutoMapLocations(bool map);