1 #ifndef _RRVERTEXPACKET_HPP 2 #define _RRVERTEXPACKET_HPP 3 /*------------------------------------------------------------------------- 4 * drawElements Quality Program Reference Renderer 5 * ----------------------------------------------- 6 * 7 * Copyright 2014 The Android Open Source Project 8 * 9 * Licensed under the Apache License, Version 2.0 (the "License"); 10 * you may not use this file except in compliance with the License. 11 * You may obtain a copy of the License at 12 * 13 * http://www.apache.org/licenses/LICENSE-2.0 14 * 15 * Unless required by applicable law or agreed to in writing, software 16 * distributed under the License is distributed on an "AS IS" BASIS, 17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 18 * See the License for the specific language governing permissions and 19 * limitations under the License. 20 * 21 *//*! 22 * \file 23 * \brief Vertex packet and Vertex packet allocator 24 *//*--------------------------------------------------------------------*/ 25 26 #include "rrDefs.hpp" 27 #include "rrGenericVector.hpp" 28 #include "tcuVector.hpp" 29 30 #include <vector> 31 32 namespace rr 33 { 34 35 class VertexPacketAllocator; 36 37 /*--------------------------------------------------------------------*//*! 38 * \brief Vertex packet 39 * 40 * Vertex packet contains inputs and outputs for vertex shading. 41 * 42 * Inputs consist of per-vertex vertex and instance indices. Attribute 43 * list that can be accessed using those indices is provided as separate 44 * pointer for VS. 45 * 46 * Outputs include position, optional point size, and list of generic 47 * outputs that shader can write to. Number of VS outputs is specified 48 * in ProgramInfo. 49 * 50 * VertexPacket instance must be created by VertexPacketAllocator as 51 * outputs must be allocated memory after the instance. 52 *//*--------------------------------------------------------------------*/ 53 struct VertexPacket 54 { 55 // Inputs. 56 int instanceNdx; //!< Instance index. 57 int vertexNdx; //!< Vertex index. 58 59 // Outputs. 60 tcu::Vec4 position; //!< Transformed position - must be written always. 61 float pointSize; //!< Point size, required when rendering points. 62 int primitiveID; //!< Geometry shader output 63 64 GenericVec4 outputs[1]; //!< Generic vertex shader outputs - passed to subsequent shader stages. Array length is the number of outputs. 65 // --- DO NOT ADD ANY MEMBER VARIABLES AFTER OUTPUTS, OUTPUTS IS VARIABLE-SIZED --- // 66 67 private: 68 // Allow creation and destruction only for Allocator 69 VertexPacket (void); 70 VertexPacket (const VertexPacket&); // disabled, non-copyable 71 ~VertexPacket (void); 72 73 // Assignment cannot work without knowing the output array length => prevent assignment 74 VertexPacket& operator= (const VertexPacket&); // disabled, non-copyable 75 76 77 friend class VertexPacketAllocator; 78 } DE_WARN_UNUSED_TYPE; 79 80 81 /*--------------------------------------------------------------------*//*! 82 * \brief Vertex packet allocator 83 * 84 * Allocates vertex packets. 85 * 86 * Vertex packet must have enough space allocated for its outputs. 87 * 88 * All memory allocated for vertex packets is released when VertexPacketAllocator 89 * is destroyed. Allocated vertex packets should not be accessed after 90 * allocator is destroyed. 91 * 92 * alloc and allocArray will throw bad_alloc if allocation fails. 93 *//*--------------------------------------------------------------------*/ 94 class VertexPacketAllocator 95 { 96 public: 97 VertexPacketAllocator (const size_t numberOfVertexOutputs); 98 ~VertexPacketAllocator (void); 99 100 std::vector<VertexPacket*> allocArray (size_t count); // throws bad_alloc 101 VertexPacket* alloc (void); // throws bad_alloc 102 getNumVertexOutputs(void) const103 inline size_t getNumVertexOutputs (void) const { return m_numberOfVertexOutputs; } 104 105 private: 106 VertexPacketAllocator (const VertexPacketAllocator&); // disabled, non-copyable 107 VertexPacketAllocator& operator= (const VertexPacketAllocator&); // disabled, non-copyable 108 109 const size_t m_numberOfVertexOutputs; 110 std::vector<deInt8*> m_allocations; 111 std::vector<VertexPacket*> m_singleAllocPool; 112 } DE_WARN_UNUSED_TYPE; 113 114 } // rr 115 116 #endif // _RRVERTEXPACKET_HPP 117