1 // Copyright 2016 The SwiftShader Authors. All Rights Reserved. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #ifndef Vertex_hpp 16 #define Vertex_hpp 17 18 #include "Color.hpp" 19 #include "Common/Types.hpp" 20 #include "Main/Config.hpp" 21 22 namespace sw 23 { 24 enum Out 25 { 26 // Default vertex output semantics 27 Pos = 0, 28 C0 = 1, // Diffuse 29 C1 = 2, // Specular 30 T0 = 3, 31 T1 = 4, 32 T2 = 5, 33 T3 = 6, 34 T4 = 7, 35 T5 = 8, 36 T6 = 9, 37 T7 = 10, 38 Fog = 11, // x component 39 Pts = Fog, // y component 40 41 // Variable semantics 42 V0 = 0, 43 Vn_1 = MAX_VERTEX_OUTPUTS - 1, 44 45 Unused, 46 VERTEX_OUTPUT_LAST = Unused, 47 }; 48 49 struct UVWQ 50 { 51 float u; 52 float v; 53 float w; 54 float q; 55 56 float &operator[](int i) 57 { 58 return (&u)[i]; 59 } 60 }; 61 62 ALIGN(16, struct Vertex 63 { 64 union 65 { 66 struct // Fixed semantics 67 { 68 // Position 69 float x; 70 float y; 71 float z; 72 float w; 73 74 float4 C[2]; // Diffuse and specular color 75 76 UVWQ T[8]; // Texture coordinates 77 78 float f; // Fog 79 float pSize; // Point size 80 }; 81 82 float4 v[MAX_VERTEX_OUTPUTS]; // Generic components using semantic declaration 83 }; 84 85 // Projected coordinates 86 int X; 87 int Y; 88 float Z; 89 float W; 90 91 int clipFlags; 92 int padding[3]; 93 }); 94 95 static_assert((sizeof(Vertex) & 0x0000000F) == 0, "Vertex size not a multiple of 16 bytes (alignment requirement)"); 96 } 97 98 #endif // Vertex_hpp 99
