Move ShaderTypes.h to Shaders group

Terrain2/Shaders/ShaderTypes.h

@@ -0,0 +1,101 @@
+//
+//  ShaderTypes.h
+//  Terrain2
+//
+//  Created by Eryn Wells on 11/3/18.
+//  Copyright © 2018 Eryn Wells. All rights reserved.
+//
+
+//
+//  Header containing types and enum constants shared between Metal shaders and Swift/ObjC source
+//
+#ifndef ShaderTypes_h
+#define ShaderTypes_h
+
+#ifdef __METAL_VERSION__
+#define NS_ENUM(_type, _name) enum _name : _type _name; enum _name : _type
+#define NSInteger metal::int32_t
+#else
+#import <Foundation/Foundation.h>
+#endif
+
+#include <simd/simd.h>
+
+typedef NS_ENUM(NSInteger, BufferIndex) {
+    BufferIndexMeshPositions  = 0,
+    BufferIndexNormals        = 1,
+    BufferIndexMeshGenerics   = 2,
+    BufferIndexFaceNormals    = 3,
+    BufferIndexUniforms       = 4,
+};
+
+typedef NS_ENUM(NSInteger, NormalBufferIndex) {
+    NormalBufferIndexPoints = 0,
+    NormalBufferIndexNormals = 1,
+    NormalBufferIndexUniforms = 2,
+};
+
+typedef NS_ENUM(NSInteger, VertexAttribute)
+{
+    VertexAttributePosition  = 0,
+    VertexAttributeNormal    = 1,
+    VertexAttributeTexCoord  = 2,
+};
+
+typedef NS_ENUM(NSInteger, TextureIndex)
+{
+    TextureIndexColor    = 0,
+};
+
+typedef NS_ENUM(NSInteger, GeneratorBufferIndex) {
+    GeneratorBufferIndexMeshPositions = 0,
+    GeneratorBufferIndexTexCoords = 1,
+    GeneratorBufferIndexIndexes = 2,
+    GeneratorBufferIndexNormals = 3,
+    GeneratorBufferIndexFaceNormals = 4,
+    GeneratorBufferIndexFaceMidpoints = 5,
+    GeneratorBufferIndexUniforms = 6,
+};
+
+typedef NS_ENUM(NSInteger, GeneratorTextureIndex) {
+    GeneratorTextureIndexIn  = 0,
+    GeneratorTextureIndexOut = 1,
+};
+
+typedef struct {
+    bool enabled;
+#ifdef __METAL_VERSION__
+    simd::float4 position;
+    simd::float3 color;
+#else
+    simd_float4 position;
+    simd_float3 color;
+#endif
+} Light;
+
+struct Material {
+#ifdef __METAL_VERSION__
+    simd::float3 diffuseColor;
+    simd::float3 specularColor;
+#else
+    simd_float3 diffuseColor;
+    simd_float3 specularColor;
+#endif
+    float specularExponent;
+};
+
+typedef struct {
+    matrix_float4x4 projectionMatrix;
+    matrix_float4x4 modelViewMatrix;
+    matrix_float3x3 normalMatrix;
+#ifdef __METAL_VERSION__
+    simd::packed_float2 terrainDimensions;
+    simd::packed_uint2 terrainSegments;
+#else
+    simd_packed_float2 terrainDimensions;
+    simd_packed_uint2 terrainSegments;
+#endif
+} Uniforms;
+
+#endif /* ShaderTypes_h */
+