shader_manager.hpp

/*
 * Copyright 2025 Guillaume Guillet
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
#ifndef _FGE_SHADER_MANAGER_HPP_INCLUDED
#define _FGE_SHADER_MANAGER_HPP_INCLUDED
 
#include "FastEngine/fge_extern.hpp"
 
#include "FastEngine/manager/C_baseManager.hpp"
#include "FastEngine/vulkan/C_shader.hpp"
 
#define FGE_SHADER_BAD FGE_MANAGER_BAD
#define FGE_SHADER_DEFAULT_VERTEX "FGE:VERTEX"
#define FGE_SHADER_DEFAULT_NOTEXTURE_FRAGMENT "FGE:NT_FRAG"
#define FGE_SHADER_DEFAULT_FRAGMENT "FGE:FRAG"
 
namespace fge::shader
{
 
struct DataBlock final : manager::BaseDataBlock<vulkan::Shader>
{};
 
enum class ShaderInputTypes
{
    SHADER_HLSL,
    SHADER_GLSL,
    SHADER_SPIRV
};

class FGE_API ShaderManager final : public manager::BaseManager<vulkan::Shader, DataBlock>
{
public:
    using BaseManager::BaseManager;

    bool initialize() override;

    bool loadFromMemory(std::string_view name,
                        void const* data,
                        int size,
                        fge::vulkan::Shader::Type type,
                        ShaderInputTypes input,
                        bool debugBuild = false);
    bool loadFromFile(std::string_view name,
                      std::filesystem::path path,
                      fge::vulkan::Shader::Type type,
                      ShaderInputTypes input,
                      bool debugBuild = false);
};

FGE_API extern ShaderManager gManager;


FGE_API bool CompileAndLinkShader(fge::vulkan::Shader::Type type,
                                  char const* shaderIn,
                                  int shaderInSize,
                                  std::vector<uint32_t>& shaderOut,
                                  char const* shaderName,
                                  char const* entryPointName,
                                  bool debugBuild,
                                  bool isHlsl);
 
FGE_API bool SaveSpirVToBinaryFile(std::vector<uint32_t> const& spirv, std::filesystem::path const& path);

 
} // namespace fge::shader
 
#endif // _FGE_SHADER_MANAGER_HPP_INCLUDED