#pragma once
#include "../Rendering/camera.h"
#include "../Rendering/shader.h"
#include "../Rendering/mesh.h"
#include "../Rendering/graphics_device.h"
#include "../ASM/math_c_fallback.h"

#define UI_MAX_QUADS 8192

typedef struct {
    Camera camera;
    Shader* shader;
    ID3D11Buffer* vb;
    ID3D11Buffer* ib;
    ID3D11Buffer* text_vb;
    ID3D11Buffer* text_ib;
    ID3D11RasterizerState* rstate;
    ID3D11DepthStencilState* ds_state;
    ID3D11VertexShader* text_vs;
    ID3D11PixelShader* text_ps;
    ID3D11InputLayout* text_layout;
    ID3D11BlendState* text_blend;
    ID3D11SamplerState* text_sampler;
    float screen_w;
    float screen_h;
    float z_plane;
} UILayer;

int uilayer_init(UILayer* u, ID3D11Device* dev, float screen_w, float screen_h);
void uilayer_destroy(UILayer* u);
void uilayer_begin(UILayer* u);
void uilayer_rect(UILayer* u,
                   float x, float y, float w, float h,
                   float r, float g, float b, float a);
void uilayer_textured_rect(UILayer* u, ID3D11DeviceContext* ctx,
                            ID3D11ShaderResourceView* srv,
                            float x, float y, float w, float h,
                            float u0, float v0, float u1, float v1,
                            float r, float g, float b, float a);
void uilayer_flush(UILayer* u, ID3D11DeviceContext* ctx);
void uilayer_flush_text(UILayer* u, ID3D11DeviceContext* ctx);