OpenGLShader.hpp

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#ifndef OPENGLSHADER_HPP_
#define OPENGLSHADER_HPP_
 
#include "../Common/Shader.hpp"
#include <glad/glad.h>
 
namespace Sleak {
namespace RenderEngine {
 
/// GLSL shader program compiled from either a combined source file or separate vertex/fragment files.
class ENGINE_API OpenGLShader : public Shader {
public:
    OpenGLShader();
    ~OpenGLShader() override;
 
    /// Splits a combined shader file into vertex/fragment stages and links them.
    bool compile(const std::string& shaderPath) override;
    /// Compiles and links separate vertex and fragment shader files.
    bool compile(const std::string& vert, const std::string& frag) override;
    void bind() override;
 
    GLuint GetProgram() const { return m_program; }
 
private:
    /// Compiles a single shader stage from source text.
    bool CompileShaderSource(const std::string& source, GLenum type,
                             GLuint& shader);
    std::string ReadFile(const std::string& path);
 
    GLuint m_program = 0;
};
 
}  // namespace RenderEngine
}  // namespace Sleak
 
#endif  // OPENGLSHADER_HPP_