text: /******************************************************************************
   * The MIT License (MIT)
   *
   * Copyright (c) 2018 Baldur Karlsson
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   * THE SOFTWARE.
   ******************************************************************************/
  
  #pragma once
  
  #include "driver/dx/official/d3d11_4.h"
  
  class WrappedID3D11Device;
  class WrappedID3D11DeviceContext;
  
  class D3D11TextRenderer
  {
  public:
    D3D11TextRenderer(WrappedID3D11Device *wrapper);
    ~D3D11TextRenderer();
  
    void SetOutputDimensions(int w, int h)
    {
      m_width = w;
      m_height = h;
    }
    int GetWidth() { return RDCMAX(1, m_width); }
    int GetHeight() { return RDCMAX(1, m_height); }
    void SetOutputWindow(HWND w);
  
    void RenderText(float x, float y, const char *textfmt, ...);
  
  private:
    int m_width = 1, m_height = 1;
    float m_supersamplingX = 1.0f, m_supersamplingY = 1.0f;
  
    WrappedID3D11Device *m_pDevice = NULL;
    WrappedID3D11DeviceContext *m_pImmediateContext = NULL;
  
    void RenderTextInternal(float x, float y, const char *text);
  
    static const int FONT_TEX_WIDTH = 256;
    static const int FONT_TEX_HEIGHT = 128;
    static const int FONT_MAX_CHARS = 256;
  
    ID3D11BlendState *BlendState = NULL;
    ID3D11SamplerState *LinearSampler = NULL;
    ID3D11ShaderResourceView *Tex = NULL;
    ID3D11Buffer *CBuffer = NULL;
    ID3D11Buffer *GlyphData = NULL;
    ID3D11Buffer *CharBuffer = NULL;
    ID3D11VertexShader *VS = NULL;
    ID3D11PixelShader *PS = NULL;
  
    float CharAspect = 1.0f;
    float CharSize = 1.0f;
  };