joshualitt | 4973d9d | 2014-11-08 09:24:25 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2014 Google Inc. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
| 8 | #ifndef GrDefaultGeoProcFactory_DEFINED |
| 9 | #define GrDefaultGeoProcFactory_DEFINED |
| 10 | |
| 11 | #include "GrGeometryProcessor.h" |
| 12 | |
| 13 | class GrDrawState; |
| 14 | |
| 15 | /* |
| 16 | * A factory for creating default Geometry Processors which simply multiply position by the uniform |
| 17 | * view matrix and wire through color, coverage, UV coords if requested. Right now this is only |
| 18 | * used in the creation of optimized draw states because adding default GPs to the drawstate can |
| 19 | * interfere with batching due to updating the drawstate. |
| 20 | * TODO When we track geometry state separately from the draw state, we should be able use a default |
| 21 | * GP with every draw call |
| 22 | */ |
| 23 | class GrDefaultGeoProcFactory { |
| 24 | public: |
| 25 | // Structs for adding vertex attributes |
| 26 | struct PositionAttr { |
| 27 | SkPoint fPosition; |
| 28 | }; |
| 29 | |
| 30 | struct PositionCoverageAttr { |
| 31 | SkPoint fPosition; |
| 32 | GrColor fCoverage; |
| 33 | }; |
| 34 | |
| 35 | struct PositionColorAttr { |
| 36 | SkPoint fPosition; |
| 37 | SkColor fColor; |
| 38 | }; |
| 39 | |
| 40 | struct PositionColorCoverageAttr { |
| 41 | SkPoint fPosition; |
| 42 | SkColor fColor; |
| 43 | GrColor fCoverage; |
| 44 | }; |
| 45 | |
| 46 | struct PositionLocalCoordAttr { |
| 47 | SkPoint fPosition; |
| 48 | SkPoint fLocalCoord; |
| 49 | }; |
| 50 | |
| 51 | struct PositionLocalCoordCoverageAttr { |
| 52 | SkPoint fPosition; |
| 53 | SkPoint fLocalCoord; |
| 54 | GrColor fCoverage; |
| 55 | }; |
| 56 | |
| 57 | struct PositionColorLocalCoordAttr { |
| 58 | SkPoint fPosition; |
| 59 | GrColor fColor; |
| 60 | SkPoint fLocalCoord; |
| 61 | }; |
| 62 | |
| 63 | struct PositionColorLocalCoordCoverage { |
| 64 | SkPoint fPosition; |
| 65 | GrColor fColor; |
| 66 | SkPoint fLocalCoord; |
| 67 | GrColor fCoverage; |
| 68 | }; |
| 69 | |
| 70 | enum GPType { |
| 71 | kPosition_GPType = 0x0, // we ALWAYS have position |
| 72 | kColor_GPType = 0x01, |
| 73 | kLocalCoord_GPType = 0x02, |
| 74 | kCoverage_GPType= 0x04, |
| 75 | kLastGPType = kCoverage_GPType |
| 76 | }; |
| 77 | |
joshualitt | 5478d42 | 2014-11-14 16:00:38 -0800 | [diff] [blame^] | 78 | /* |
| 79 | * The following functions are used to create default GPs. If you just need to create |
| 80 | * attributes seperately from creating the default GP, use the SetAttribs function followed |
| 81 | * by the Create function. Otherwise use CreateAndSetAttribs to do both at once. |
| 82 | * |
| 83 | * You must unref the return from Create. |
| 84 | */ |
| 85 | static void SetAttribs(GrDrawState*, uint32_t GPTypeFlags = 0); |
| 86 | static const GrGeometryProcessor* CreateAndSetAttribs(GrDrawState*, uint32_t GPTypeFlags = 0); |
| 87 | static const GrGeometryProcessor* Create(bool hasAttributeCoverage); |
joshualitt | 4973d9d | 2014-11-08 09:24:25 -0800 | [diff] [blame] | 88 | }; |
| 89 | |
| 90 | #endif |