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#pragma once
#include <string>
typedef int ShaderKeyword;
// We use about 14 builtin keywords now, 18 more for the user should be fine now
// (shader size explosion will happen before that limit is reached anyways...)
const int kMaxShaderKeywords = 64;
struct ShaderKeywordSet {
public:
explicit ShaderKeywordSet () : mask(0) {}
void Enable (ShaderKeyword key) { mask |= (0x1ULL<<key); }
void Disable (ShaderKeyword key) { mask &= ~(0x1ULL<<key); }
bool IsEnabled (ShaderKeyword key) const { return (mask & (0x1ULL<<key)) != 0; }
void Reset () { mask = 0; }
UInt64 GetMask() const { return mask; }
void SetMask (UInt64 m) { mask = m; }
bool operator== (const ShaderKeywordSet& o) const { return mask==o.mask; }
bool operator!= (const ShaderKeywordSet& o) const { return mask!=o.mask; }
private:
UInt64 mask;
};
extern ShaderKeywordSet g_ShaderKeywords;
namespace keywords {
void Initialize();
void Cleanup();
ShaderKeyword Create( const std::string& name );
#if UNITY_EDITOR
std::string GetKeywordName (ShaderKeyword k);
#endif
} // namespace keywords
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