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