engineer-thesis-WUT/breakout/shader.hpp

// Copyright [2023] Krzysztof Rudnicki
#ifndef HOME_KUCHY_ENGINEER_THESIS_WUT_BREAKOUT_SHADER_HPP
#define HOME_KUCHY_ENGINEER_THESIS_WUT_BREAKOUT_SHADER_HPP

#include "../dependencies/include/glad/glad.h"
#include "../dependencies/include/glm/glm/glm.hpp"
#include "../dependencies/include/glm/glm/gtc/type_ptr.hpp"

// General purpose shader object. Compiles from file, generates
// compile/link-time error messages and hosts several utility
// functions for easy management.
class Shader {
public:
  // state
  unsigned int ID{};
  // constructor
  Shader() = default;
  // sets the current shader as active
  auto Use() -> Shader &;
  // compiles the shader from given source code
  void Compile(const char *vertexSource, const char *fragmentSource,
               const char *geometrySource);
  // note: geometrysource code is optional
  // utility functions
  void SetFloat(const char *name, float value, bool useShader);
  void SetInteger(const char *name, int value, bool useShader);
  void SetVector2f(const char *name, float x, float y, bool useShader);
  void SetVector2f(const char *name, const glm::vec2 &value, bool useShader);
  void SetVector3f(const char *name, float x, float y, float z, bool useShader);
  void SetVector3f(const char *name, const glm::vec3 &value, bool useShader);
  void SetVector4f(const char *name, float x, float y, float z, float w,
                   bool useShader);
  void SetVector4f(const char *name, const glm::vec4 &value, bool useShader);
  void SetMatrix4(const char *name, const glm::mat4 &matrix, bool useShader);

private:
  // checks if compilation or linking failed and if so, print the error logs
  static void checkCompileErrors(unsigned int object, const std::string &type);
};

#endif // HOME_KUCHY_ENGINEER_THESIS_WUT_BREAKOUT_SHADER_HPP