statechanger.h

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#pragma once
 
#include "render/blend.h"
#include "render/compare.h"
#include "render/cullface.h"
#include "render/rendermode.h"
#include "render/stencilaction.h"
 
namespace eu::render
{
struct FrameBuffer;
struct TextureCubemap;
struct Texture2d;
struct Uniform;
struct OpenglStates;
 
struct StateChanger
{
    OpenglStates* states;
 
    explicit StateChanger(OpenglStates* s);
 
    StateChanger& cull_face(bool new_state);
    StateChanger& blending(bool new_state);
    StateChanger& depth_test(bool new_state);
    StateChanger& depth_mask(bool new_state);
    StateChanger& depth_func(Compare new_state);
    StateChanger& stencil_test(bool new_state);
 
    StateChanger& stencil_mask(u32 new_state);
 
    StateChanger& stencil_func(Compare func, i32 ref, u32 mask);
    StateChanger& render_mode(RenderMode new_state);
 
    StateChanger& stencil_op(StencilAction stencil_fail, StencilAction depth_fail, StencilAction pass);
    StateChanger& cull_face_mode(CullFace new_state);
    StateChanger& blend_mode(Blend src, Blend dst);
    StateChanger& activate_texture(int new_texture);
    StateChanger& bind_texture_2d(int slot, unsigned int texture);
    StateChanger& bind_texture_cubemap(int slot, unsigned int texture);
};
 
void bind_texture_2d(OpenglStates* states, const Uniform& uniform, const Texture2d& texture);
void bind_texture_2d(OpenglStates* states, const Uniform& uniform, const FrameBuffer& texture);
void bind_texture_cubemap(OpenglStates* states, const Uniform& uniform, const TextureCubemap& texture);
 
}  //  namespace klotter