59 lines
1.9 KiB
C++
59 lines
1.9 KiB
C++
//
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// Created by jie on 2023/10/11.
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//
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#ifndef LEARNOPENGL_SHADERHELPER_H
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#define LEARNOPENGL_SHADERHELPER_H
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#include "glad/glad.h"
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#include <filesystem>
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#include <type_traits>
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#include <glm/glm.hpp>
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class ShaderService
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{
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private:
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unsigned int programId;
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public:
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explicit ShaderService(const char* vSource, const char* fSource);
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explicit ShaderService(const std::filesystem::path &vertexShaderPath, const std::filesystem::path &fragShaderPath);
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void InitShader(const char* vSource, const char* fSource);
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bool CheckShader(unsigned int shaderIndex, bool isProgram = false);
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void Use();
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inline unsigned int GetId() { return this->programId; }
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template <typename T>
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requires std::is_same_v<T, bool> || std::is_same_v<T, int> || std::is_same_v<T, float> ||
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std::is_same_v<T, glm::mat4> || std::is_same_v<T, glm::vec3>
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void SetUniform(std::string_view name, T value);
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};
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template <typename T>
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requires std::is_same_v<T, bool> || std::is_same_v<T, int> || std::is_same_v<T, float> ||
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std::is_same_v<T, glm::mat4> || std::is_same_v<T, glm::vec3>
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void ShaderService::SetUniform(std::string_view name, T value)
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{
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if constexpr (std::is_same_v<T, bool>)
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{
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glUniform1i(glGetUniformLocation(programId, name.data()), (int)value);
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}
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else if constexpr (std::is_same_v<T, int>)
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{
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glUniform1i(glGetUniformLocation(programId, name.data()), value);
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}
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else if constexpr (std::is_same_v<T, float>)
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{
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glUniform1f(glGetUniformLocation(programId, name.data()), value);
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}
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else if constexpr (std::is_same_v<T, glm::mat4>)
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{
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const auto index = glGetUniformLocation(this->programId, name.data());
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glUniformMatrix4fv(index, 1, GL_FALSE, &value[0][0]);
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}
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else if constexpr (std::is_same_v<T, glm::vec3>){
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glUniform3fv(glGetUniformLocation(programId, name.data()), 1, &value[0]);
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}
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}
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#endif // LEARNOPENGL_SHADERHELPER_H
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