#ifndef _RRFRAGMENTPACKET_HPP
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#define _RRFRAGMENTPACKET_HPP
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/*-------------------------------------------------------------------------
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* drawElements Quality Program Reference Renderer
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* -----------------------------------------------
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*
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* Copyright 2014 The Android Open Source Project
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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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*
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*//*!
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* \file
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* \brief Fragment packet
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*//*--------------------------------------------------------------------*/
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#include "rrDefs.hpp"
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#include "rrGenericVector.hpp"
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namespace rr
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{
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enum
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{
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NUM_FRAGMENTS_PER_PACKET = 4
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};
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/*--------------------------------------------------------------------*//*!
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* \brief Fragment packet
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*
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* Fragment packet contains inputs and outputs for fragment shading.
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*
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* Fragment shading is always done in 2x2 blocks in order to easily estimate
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* derivates for mipmap-selection etc.
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*
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* Values packed in vectors (such as barycentrics) are in order:
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* (x0,y0), (x1,y0), (x0,y1), (x1,y1)
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* OR:
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* ndx = y*2 + x
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*//*--------------------------------------------------------------------*/
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struct FragmentPacket
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{
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tcu::IVec2 position; //!< Position of (0,0) fragment.
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deUint64 coverage; //!< Coverage mask.
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tcu::Vec4 barycentric[3]; //!< Perspective-correct barycentric values.
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};
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} // rr
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#endif // _RRFRAGMENTPACKET_HPP
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