2D Pixel Art Rasterizer Data Struct (Metal Shading Language)

pixelartshaderrasterizerdata.metal

typedef struct
{
  // Rasterizer position output data, in terms of Apple's normalized device 
  // coordinates. The vertex shader maps on screen pixel coordinates to normalized 
  // device coordinates and stores the output in this value.
  float4 position [[position]];
  
  // The fragment texture coordinate, expressed in standard UV notation where 0.0f 
  // is the beginning and 1.0f is the end of a textured quad.
  float2 textureCoordinate;                                                                                                                
  
  // The scaled texture coordinate, a mapping from the texture coordinate, making 
  // it easier to reason about the location of individual texels. This is basically 
  // textureCoordinate*textureSize.
  float2 vUv;
  
  // The size of the source texture in pixels.
  float2 textureSize;                                                            
 
} RasterizerData;