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// 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_Polygon_hpp
#define sw_Polygon_hpp
#include "Vertex.hpp"
namespace sw
{
struct Polygon
{
Polygon(const float4 *P0, const float4 *P1, const float4 *P2)
{
P[0][0] = P0;
P[0][1] = P1;
P[0][2] = P2;
n = 3;
i = 0;
b = 0;
}
Polygon(const float4 *P, int n)
{
for(int i = 0; i < n; i++)
{
this->P[0][i] = &P[i];
}
this->n = n;
this->i = 0;
this->b = 0;
}
float4 B[16]; // Buffer for clipped vertices
const float4 *P[16][16]; // Pointers to clipped polygon's vertices
int n; // Number of vertices
int i; // Level of P to use
int b; // Next available new vertex
};
}
#endif // sw_Polygon_hpp