/*

See LICENSE folder for this sample’s licensing information.

Abstract:

Header containing types and enum constants shared between Metal shaders and C/ObjC source

*/

#ifndef UTMShaderTypes_h

#define UTMShaderTypes_h

#include <simd/simd.h>

// Buffer index values shared between shader and C code to ensure Metal shader buffer inputs match

// Metal API buffer set calls

typedef enum UTMVertexInputIndex

} UTMVertexInputIndex;

// Texture index values shared between shader and C code to ensure Metal shader buffer inputs match

// Metal API texture set calls

typedef enum UTMTextureIndex

{

UTMTextureIndexBaseColor = 0,

} UTMTextureIndex;

// This structure defines the layout of each vertex in the array of vertices set as an input to our

// Metal vertex shader. Since this header is shared between our .metal shader and C code,

// we can be sure that the layout of the vertex array in the code matches the layout that

// our vertex shader expects

typedef struct

{

// Positions in pixel space (i.e. a value of 100 indicates 100 pixels from the origin/center)

vector_float2 position;

// 2D texture coordinate

vector_float2 textureCoordinate;

} UTMVertex;

#endif /* UTMShaderTypes_h */