| // Copyright 2016 The SwiftShader Authors. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #ifndef sw_Primitive_hpp |
| #define sw_Primitive_hpp |
| |
| #include "Vertex.hpp" |
| #include "Config.hpp" |
| |
| namespace sw |
| { |
| struct Triangle |
| { |
| Vertex v0; |
| Vertex v1; |
| Vertex v2; |
| }; |
| |
| struct PlaneEquation // z = A * x + B * y + C |
| { |
| float4 A; |
| float4 B; |
| float4 C; |
| }; |
| |
| struct Primitive |
| { |
| int yMin; |
| int yMax; |
| |
| float4 xQuad; |
| float4 yQuad; |
| |
| PlaneEquation z; |
| PlaneEquation w; |
| |
| union |
| { |
| struct |
| { |
| PlaneEquation C[2][4]; |
| PlaneEquation T[8][4]; |
| PlaneEquation f; |
| }; |
| |
| PlaneEquation V[MAX_FRAGMENT_INPUTS][4]; |
| }; |
| |
| float area; |
| |
| // Masks for two-sided stencil |
| int64_t clockwiseMask; |
| int64_t invClockwiseMask; |
| |
| struct Span |
| { |
| unsigned short left; |
| unsigned short right; |
| }; |
| |
| Span outlineUnderflow; |
| Span outline[OUTLINE_RESOLUTION]; |
| Span outlineOverflow; |
| }; |
| } |
| |
| #endif // sw_Primitive_hpp |