// Copyright 2016 The SwiftShader Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef sw_Polygon_hpp
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#define sw_Polygon_hpp
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#include "Vertex.hpp"
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namespace sw
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{
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struct Polygon
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{
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Polygon(const float4 *P0, const float4 *P1, const float4 *P2)
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{
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P[0][0] = P0;
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P[0][1] = P1;
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P[0][2] = P2;
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n = 3;
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i = 0;
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b = 0;
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}
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Polygon(const float4 *P, int n)
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{
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for(int i = 0; i < n; i++)
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{
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this->P[0][i] = &P[i];
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}
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this->n = n;
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this->i = 0;
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this->b = 0;
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}
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float4 B[16]; // Buffer for clipped vertices
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const float4 *P[16][16]; // Pointers to clipped polygon's vertices
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int n; // Number of vertices
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int i; // Level of P to use
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int b; // Next available new vertex
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};
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}
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#endif // sw_Polygon_hpp
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