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Handle shader options of any type

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This commit is contained in:
Jérôme Leclercq
2021-09-03 19:33:41 +02:00
parent 2f9e495739
commit 02a12d9328
38 changed files with 236 additions and 1118 deletions
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38
include/Nazara/Graphics/UberShader.hpp
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@@ -8,8 +8,10 @@
#define NAZARA_UBER_SHADER_HPP
#include <Nazara/Prerequisites.hpp>
#include <Nazara/Core/Algorithm.hpp>
#include <Nazara/Core/Bitset.hpp>
#include <Nazara/Graphics/Config.hpp>
#include <Nazara/Renderer/RenderPipeline.hpp>
#include <Nazara/Shader/Ast/Nodes.hpp>
#include <unordered_map>
@@ -20,21 +22,45 @@ namespace Nz
class NAZARA_GRAPHICS_API UberShader
{
public:
struct Config;
struct Option;
UberShader(ShaderStageTypeFlags shaderStages, const ShaderAst::StatementPtr& shaderAst);
~UberShader() = default;
UInt64 GetOptionFlagByName(const std::string& optionName) const;
inline ShaderStageTypeFlags GetSupportedStages() const;
const std::shared_ptr<ShaderModule>& Get(UInt64 combination);
const std::shared_ptr<ShaderModule>& Get(const Config& config);
inline bool HasOption(const std::string& optionName, Pointer<const Option>* option = nullptr) const;
static constexpr std::size_t MaximumOptionValue = 32;
struct Config
{
std::array<ShaderAst::ConstantValue, MaximumOptionValue> optionValues;
};
struct ConfigEqual
{
inline bool operator()(const Config& lhs, const Config& rhs) const;
};
struct ConfigHasher
{
inline std::size_t operator()(const Config& config) const;
};
struct Option
{
std::size_t index;
ShaderAst::ExpressionType type;
};
private:
std::unordered_map<UInt64 /*combination*/, std::shared_ptr<ShaderModule>> m_combinations;
std::unordered_map<std::string, std::size_t> m_optionIndexByName;
std::unordered_map<Config, std::shared_ptr<ShaderModule>, ConfigHasher, ConfigEqual> m_combinations;
std::unordered_map<std::string, Option> m_optionIndexByName;
ShaderAst::StatementPtr m_shaderAst;
ShaderStageTypeFlags m_shaderStages;
UInt64 m_combinationMask;
};
}