1 /* 2 ----------------------------------------------------------------------------- 3 This source file is part of OGRE 4 (Object-oriented Graphics Rendering Engine) 5 For the latest info, see http://www.ogre3d.org/ 6 7 Copyright (c) 2000-2014 Torus Knot Software Ltd 8 9 Permission is hereby granted, free of charge, to any person obtaining a copy 10 of this software and associated documentation files (the "Software"), to deal 11 in the Software without restriction, including without limitation the rights 12 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 13 copies of the Software, and to permit persons to whom the Software is 14 furnished to do so, subject to the following conditions: 15 16 The above copyright notice and this permission notice shall be included in 17 all copies or substantial portions of the Software. 18 19 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 20 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 21 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 22 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 23 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 24 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 25 THE SOFTWARE. 26 ----------------------------------------------------------------------------- 27 */ 28 #ifndef _RenderOperation_H__ 29 #define _RenderOperation_H__ 30 31 #include "OgrePrerequisites.h" 32 #include "OgreVertexIndexData.h" 33 #include "OgreHeaderPrefix.h" 34 35 namespace Ogre { 36 37 38 /** \addtogroup Core 39 * @{ 40 */ 41 /** \addtogroup RenderSystem 42 * @{ 43 */ 44 /** 'New' rendering operation using vertex buffers. */ 45 class _OgrePrivate RenderOperation { 46 public: 47 /// The rendering operation type to perform 48 enum OperationType { 49 /// A list of points, 1 vertex per point 50 OT_POINT_LIST = 1, 51 /// A list of lines, 2 vertices per line 52 OT_LINE_LIST = 2, 53 /// A strip of connected lines, 1 vertex per line plus 1 start vertex 54 OT_LINE_STRIP = 3, 55 /// A list of triangles, 3 vertices per triangle 56 OT_TRIANGLE_LIST = 4, 57 /// A strip of triangles, 3 vertices for the first triangle, and 1 per triangle after that 58 OT_TRIANGLE_STRIP = 5, 59 /// A fan of triangles, 3 vertices for the first triangle, and 1 per triangle after that 60 OT_TRIANGLE_FAN = 6, 61 /// Patch control point operations, used with tessellation stages 62 OT_PATCH_1_CONTROL_POINT = 7, 63 OT_PATCH_2_CONTROL_POINT = 8, 64 OT_PATCH_3_CONTROL_POINT = 9, 65 OT_PATCH_4_CONTROL_POINT = 10, 66 OT_PATCH_5_CONTROL_POINT = 11, 67 OT_PATCH_6_CONTROL_POINT = 12, 68 OT_PATCH_7_CONTROL_POINT = 13, 69 OT_PATCH_8_CONTROL_POINT = 14, 70 OT_PATCH_9_CONTROL_POINT = 15, 71 OT_PATCH_10_CONTROL_POINT = 16, 72 OT_PATCH_11_CONTROL_POINT = 17, 73 OT_PATCH_12_CONTROL_POINT = 18, 74 OT_PATCH_13_CONTROL_POINT = 19, 75 OT_PATCH_14_CONTROL_POINT = 20, 76 OT_PATCH_15_CONTROL_POINT = 21, 77 OT_PATCH_16_CONTROL_POINT = 22, 78 OT_PATCH_17_CONTROL_POINT = 23, 79 OT_PATCH_18_CONTROL_POINT = 24, 80 OT_PATCH_19_CONTROL_POINT = 25, 81 OT_PATCH_20_CONTROL_POINT = 26, 82 OT_PATCH_21_CONTROL_POINT = 27, 83 OT_PATCH_22_CONTROL_POINT = 28, 84 OT_PATCH_23_CONTROL_POINT = 29, 85 OT_PATCH_24_CONTROL_POINT = 30, 86 OT_PATCH_25_CONTROL_POINT = 31, 87 OT_PATCH_26_CONTROL_POINT = 32, 88 OT_PATCH_27_CONTROL_POINT = 33, 89 OT_PATCH_28_CONTROL_POINT = 34, 90 OT_PATCH_29_CONTROL_POINT = 35, 91 OT_PATCH_30_CONTROL_POINT = 36, 92 OT_PATCH_31_CONTROL_POINT = 37, 93 OT_PATCH_32_CONTROL_POINT = 38, 94 // max valid base OT_ = (1 << 6) - 1 95 /// Mark that the index buffer contains adjacency information 96 OT_DETAIL_ADJACENCY_BIT = 1 << 6, 97 /// like OT_POINT_LIST but with adjacency information for the geometry shader 98 OT_LINE_LIST_ADJ = OT_LINE_LIST | OT_DETAIL_ADJACENCY_BIT, 99 /// like OT_LINE_STRIP but with adjacency information for the geometry shader 100 OT_LINE_STRIP_ADJ = OT_LINE_STRIP | OT_DETAIL_ADJACENCY_BIT, 101 /// like OT_TRIANGLE_LIST but with adjacency information for the geometry shader 102 OT_TRIANGLE_LIST_ADJ = OT_TRIANGLE_LIST | OT_DETAIL_ADJACENCY_BIT, 103 /// like OT_TRIANGLE_STRIP but with adjacency information for the geometry shader 104 OT_TRIANGLE_STRIP_ADJ = OT_TRIANGLE_STRIP | OT_DETAIL_ADJACENCY_BIT, 105 }; 106 107 /// Vertex source data 108 VertexData *vertexData; 109 110 /// The type of operation to perform 111 OperationType operationType; 112 113 /** Specifies whether to use indexes to determine the vertices to use as input. If false, the vertices are 114 simply read in sequence to define the primitives. If true, indexes are used instead to identify vertices 115 anywhere in the buffer, and allowing vertices to be used more than once. 116 If true, then the indexBuffer, indexStart and numIndexes properties must be valid. */ 117 bool useIndexes; 118 119 /// Index data - only valid if useIndexes is true 120 IndexData *indexData; 121 /// Debug pointer back to renderable which created this 122 const Renderable* srcRenderable; 123 124 /// The number of instances for the render operation - this option is supported 125 /// in only a part of the render systems. 126 size_t numberOfInstances; 127 128 /** A flag to indicate that it is possible for this operation to use a global 129 vertex instance buffer if available.*/ 130 bool useGlobalInstancingVertexBufferIsAvailable; 131 RenderOperation()132 RenderOperation() : 133 vertexData(0), operationType(OT_TRIANGLE_LIST), useIndexes(true), 134 indexData(0), srcRenderable(0), numberOfInstances(1), 135 useGlobalInstancingVertexBufferIsAvailable(true) 136 {} 137 138 139 }; 140 /** @} */ 141 /** @} */ 142 } 143 144 #include "OgreHeaderSuffix.h" 145 146 #endif 147