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#pragma once
#include <GL/glew.h>
#include <glRef.hpp>
#include <optional>
#include <string_view>
class Shader {
public:
constexpr Shader(const GLchar * text, GLint len, GLuint type) : text {text}, len {len}, type {type} { }
operator GLuint() const;
static void CheckShaderError(GLuint shader, GLuint flag, bool isProgram, std::string_view errorMessage);
private:
using ShaderRef = glRef<GLuint, &__glewCreateShader, &__glewDeleteShader>;
const GLchar * text;
GLint len;
GLuint type;
mutable std::optional<ShaderRef> shader {};
};
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