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| 1 /* | |
| 2 * Copyright 2016 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 gr_instanced_InstanceProcessor_DEFINED | |
| 9 #define gr_instanced_InstanceProcessor_DEFINED | |
| 10 | |
| 11 #include "GrBufferAccess.h" | |
| 12 #include "GrGeometryProcessor.h" | |
| 13 #include "instanced/InstancedRenderingTypes.h" | |
| 14 | |
| 15 namespace gr_instanced { | |
| 16 | |
| 17 /** | |
| 18 * This class provides a GP implementation that uses instanced rendering. Is sen
ds geometry in as | |
| 19 * basic, pre-baked canonical shapes, and uses instanced vertex attribs to contr
ol how these shapes | |
| 20 * are transformed and drawn. MSAA is accomplished with the sample mask rather t
han finely | |
| 21 * tesselated geometry. | |
| 22 */ | |
| 23 class InstanceProcessor : public GrGeometryProcessor { | |
| 24 public: | |
| 25 static bool IsSupported(const GrGLSLCaps&, const GrCaps&, AntialiasMode* las
tSupportedAAMode); | |
| 26 | |
| 27 InstanceProcessor(BatchInfo, GrBuffer* paramsBuffer); | |
| 28 | |
| 29 const char* name() const override { return "Instance Processor"; } | |
| 30 BatchInfo batchInfo() const { return fBatchInfo; } | |
| 31 | |
| 32 void getGLSLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder* b) const
override { | |
| 33 b->add32(fBatchInfo.fData); | |
| 34 } | |
| 35 GrGLSLPrimitiveProcessor* createGLSLInstance(const GrGLSLCaps&) const overri
de; | |
| 36 | |
| 37 /** | |
| 38 * Returns a buffer of ShapeVertex that defines the canonical instanced geom
etry. | |
| 39 */ | |
| 40 static const GrBuffer* SK_WARN_UNUSED_RESULT FindOrCreateVertexBuffer(GrGpu*
); | |
| 41 | |
| 42 /** | |
| 43 * Returns a buffer of 8-bit indices for the canonical instanced geometry. T
he client can call | |
| 44 * GetIndexRangeForXXX to know which indices to use for a specific shape. | |
| 45 */ | |
| 46 static const GrBuffer* SK_WARN_UNUSED_RESULT FindOrCreateIndex8Buffer(GrGpu*
); | |
| 47 | |
| 48 static IndexRange GetIndexRangeForRect(AntialiasMode); | |
| 49 static IndexRange GetIndexRangeForOval(AntialiasMode, const SkRect& devBound
s); | |
| 50 static IndexRange GetIndexRangeForRRect(AntialiasMode); | |
| 51 | |
| 52 static const char* GetNameOfIndexRange(IndexRange); | |
| 53 | |
| 54 private: | |
| 55 const BatchInfo fBatchInfo; | |
| 56 GrBufferAccess fParamsAccess; | |
| 57 | |
| 58 typedef GrGeometryProcessor INHERITED; | |
| 59 }; | |
| 60 | |
| 61 } | |
| 62 | |
| 63 #endif | |
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Chromium Code Reviews
Issue 2123693002:
Revert of Begin instanced rendering for simple shapes (Closed)
Base URL: https://skia.googlesource.com/skia.git@master