// 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_Stream_hpp
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#define sw_Stream_hpp
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#include "Common/Types.hpp"
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namespace sw
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{
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class Resource;
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enum StreamType ENUM_UNDERLYING_TYPE_UNSIGNED_INT
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{
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STREAMTYPE_COLOR, // 4 normalized unsigned bytes, ZYXW order
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STREAMTYPE_UDEC3, // 3 unsigned 10-bit fields
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STREAMTYPE_DEC3N, // 3 normalized signed 10-bit fields
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STREAMTYPE_INDICES, // 4 unsigned bytes, stored unconverted into X component
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STREAMTYPE_FLOAT, // Normalization ignored
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STREAMTYPE_BYTE,
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STREAMTYPE_SBYTE,
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STREAMTYPE_SHORT,
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STREAMTYPE_USHORT,
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STREAMTYPE_INT,
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STREAMTYPE_UINT,
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STREAMTYPE_FIXED, // Normalization ignored (16.16 format)
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STREAMTYPE_HALF, // Normalization ignored
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STREAMTYPE_2_10_10_10_INT,
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STREAMTYPE_2_10_10_10_UINT,
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STREAMTYPE_LAST = STREAMTYPE_2_10_10_10_UINT
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};
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struct StreamResource
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{
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Resource *resource;
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const void *buffer;
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unsigned int stride;
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};
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struct Stream : public StreamResource
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{
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Stream(Resource *resource = 0, const void *buffer = 0, unsigned int stride = 0)
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{
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this->resource = resource;
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this->buffer = buffer;
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this->stride = stride;
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}
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Stream &define(StreamType type, unsigned int count, bool normalized = false)
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{
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this->type = type;
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this->count = count;
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this->normalized = normalized;
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return *this;
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}
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Stream &define(const void *buffer, StreamType type, unsigned int count, bool normalized = false)
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{
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this->buffer = buffer;
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this->type = type;
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this->count = count;
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this->normalized = normalized;
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return *this;
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}
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Stream &defaults()
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{
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static const float4 null = {0, 0, 0, 1};
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resource = 0;
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buffer = &null;
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stride = 0;
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type = STREAMTYPE_FLOAT;
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count = 0;
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normalized = false;
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return *this;
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}
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operator bool() const // Returns true if stream contains data
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{
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return count != 0;
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}
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StreamType type;
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unsigned char count;
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bool normalized;
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};
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}
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#endif // sw_Stream_hpp
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