UtilityShaders.h

#pragma once
 
#include <LWGL/GLTypes.h>
#include <memory>
 
namespace gl {
    class Texture2D;
    class FBO;
}  // namespace gl
 
namespace engine {
 
    class Material;
 
    // extern std::unique_ptr<Material> s_gaussianBlurMat;
 
    enum class BlurType {
        Gaussian,
        LinearSampling
    };
 
    void initUtilityShaders();
 
    void applyGaussianBlur(
        const gl::FBO& source,
        gl::FBOAttachment::Attachment sourceAttachment,
        gl::FBOAttachment::Attachment tempAttachment,
        int width,
        int height,
        const gl::FBO* temp = nullptr
    );
 
    void applyLinearSamplingBlur(
        const gl::FBO& source,
        gl::FBOAttachment::Attachment sourceAttachment,
        gl::FBOAttachment::Attachment tempAttachment,
        int width,
        int height,
        const gl::FBO* temp = nullptr
    );
 
    void applyBlur(
        std::unique_ptr<Material>& blurMat,
        const gl::FBO& source,
        gl::FBOAttachment::Attachment sourceAttachment,
        gl::FBOAttachment::Attachment tempAttachment,
        int width,
        int height,
        const gl::FBO* temp = nullptr
    );
}  // namespace engine