blit_pass.h

Go to the documentation of this file.

// blit_pass.h
#pragma once
 
#include <engine/rendering/gpu_program.h>
#include <graphics/render_view.h>
#include <engine/rendering/camera.h>
#include <graphics/texture.h>
#include <graphics/render_pass.h>
 
namespace unravel
{
 
class blit_pass
{
public:
    struct run_params
    {
        gfx::frame_buffer::ptr input;   
        gfx::frame_buffer::ptr output;  
    };
 
    auto init(rtti::context& ctx) -> bool;
 
    auto run(const run_params& params) -> gfx::frame_buffer::ptr;
 
private:
    auto create_or_update_output_fb(const gfx::frame_buffer::ptr& input,
                                    const gfx::frame_buffer::ptr& output)
        -> gfx::frame_buffer::ptr;
 
    struct blit_program : uniforms_cache
    {
        void cache_uniforms()
        {
            cache_uniform(program.get(), s_input, "s_input", gfx::uniform_type::Sampler);
        }
 
        gfx::program::uniform_ptr s_input;            
        std::unique_ptr<gpu_program> program;         
    } blit_program_;
 
    gfx::frame_buffer::ptr output_;  
};
 
} // namespace unravel