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Side by Side Diff: src/gpu/GrPathRenderer.h

Issue 1311673014: Remove GrAddPathRenderers_default (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: tweaks Created 5 years, 3 months ago
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1 1
2 /* 2 /*
3 * Copyright 2011 Google Inc. 3 * Copyright 2011 Google Inc.
4 * 4 *
5 * Use of this source code is governed by a BSD-style license that can be 5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file. 6 * found in the LICENSE file.
7 */ 7 */
8 8
9 #ifndef GrPathRenderer_DEFINED 9 #ifndef GrPathRenderer_DEFINED
10 #define GrPathRenderer_DEFINED 10 #define GrPathRenderer_DEFINED
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23 23
24 /** 24 /**
25 * Base class for drawing paths into a GrDrawTarget. 25 * Base class for drawing paths into a GrDrawTarget.
26 * 26 *
27 * Derived classes can use stages GrPaint::kTotalStages through GrPipelineBuild er::kNumStages-1. 27 * Derived classes can use stages GrPaint::kTotalStages through GrPipelineBuild er::kNumStages-1.
28 * The stages before GrPaint::kTotalStages are reserved for setting up the draw (i.e., textures and 28 * The stages before GrPaint::kTotalStages are reserved for setting up the draw (i.e., textures and
29 * filter masks). 29 * filter masks).
30 */ 30 */
31 class SK_API GrPathRenderer : public SkRefCnt { 31 class SK_API GrPathRenderer : public SkRefCnt {
32 public: 32 public:
33
34
35 /**
36 * This is called to install custom path renderers in every GrContext at cre ate time. The
37 * default implementation in GrCreatePathRenderer_none.cpp does not add any additional
38 * renderers. Link against another implementation to install your own. The f irst added is the
39 * most preferred path renderer, second is second most preferred, etc.
40 *
41 * @param context the context that will use the path renderer
42 * @param prChain the chain to add path renderers to.
43 */
44 static void AddPathRenderers(GrContext* context, GrPathRendererChain* prChai n);
45
46
47 GrPathRenderer(); 33 GrPathRenderer();
48 34
49 /** 35 /**
50 * A caller may wish to use a path renderer to draw a path into the stencil buffer. However, 36 * A caller may wish to use a path renderer to draw a path into the stencil buffer. However,
51 * the path renderer itself may require use of the stencil buffer. Also a pa th renderer may 37 * the path renderer itself may require use of the stencil buffer. Also a pa th renderer may
52 * use a GrProcessor coverage stage that sets coverage to zero to eliminate pixels that are 38 * use a GrProcessor coverage stage that sets coverage to zero to eliminate pixels that are
53 * covered by bounding geometry but outside the path. These exterior pixels would still be 39 * covered by bounding geometry but outside the path. These exterior pixels would still be
54 * rendered into the stencil. 40 * rendered into the stencil.
55 * 41 *
56 * A GrPathRenderer can provide three levels of support for stenciling paths : 42 * A GrPathRenderer can provide three levels of support for stenciling paths :
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294 drawArgs.fStroke = args.fStroke; 280 drawArgs.fStroke = args.fStroke;
295 drawArgs.fAntiAlias = false; 281 drawArgs.fAntiAlias = false;
296 this->drawPath(drawArgs); 282 this->drawPath(drawArgs);
297 } 283 }
298 284
299 285
300 typedef SkRefCnt INHERITED; 286 typedef SkRefCnt INHERITED;
301 }; 287 };
302 288
303 #endif 289 #endif
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