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Side by Side Diff: src/gpu/GrSoftwarePathRenderer.cpp

Issue 23926019: Stateful PathRenderer implementation (Closed) Base URL: http://skia.googlecode.com/svn/trunk/
Patch Set: add assert & patch for missing AutoPathClear Created 6 years, 10 months ago
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1 1
2 /* 2 /*
3 * Copyright 2012 Google Inc. 3 * Copyright 2012 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 #include "GrSoftwarePathRenderer.h" 9 #include "GrSoftwarePathRenderer.h"
10 #include "GrContext.h" 10 #include "GrContext.h"
11 #include "GrSWMaskHelper.h" 11 #include "GrSWMaskHelper.h"
12 12
13 //////////////////////////////////////////////////////////////////////////////// 13 ////////////////////////////////////////////////////////////////////////////////
14 bool GrSoftwarePathRenderer::canDrawPath(const SkPath&, 14 bool GrSoftwarePathRenderer::canDrawPath(const SkStrokeRec&,
15 const SkStrokeRec&,
16 const GrDrawTarget*, 15 const GrDrawTarget*,
17 bool antiAlias) const { 16 bool antiAlias) const {
18 if (!antiAlias || NULL == fContext) { 17 if (!antiAlias || NULL == fContext) {
19 // TODO: We could allow the SW path to also handle non-AA paths but 18 // TODO: We could allow the SW path to also handle non-AA paths but
20 // this would mean that GrDefaultPathRenderer would never be called 19 // this would mean that GrDefaultPathRenderer would never be called
21 // (since it appears after the SW renderer in the path renderer 20 // (since it appears after the SW renderer in the path renderer
22 // chain). Some testing would need to be done r.e. performance 21 // chain). Some testing would need to be done r.e. performance
23 // and consistency of the resulting images before removing 22 // and consistency of the resulting images before removing
24 // the "!antiAlias" clause from the above test 23 // the "!antiAlias" clause from the above test
25 return false; 24 return false;
26 } 25 }
27 26
28 return true; 27 return true;
29 } 28 }
30 29
31 GrPathRenderer::StencilSupport GrSoftwarePathRenderer::onGetStencilSupport( 30 GrPathRenderer::StencilSupport GrSoftwarePathRenderer::onGetStencilSupport(
32 const SkPath&,
33 const SkStrokeRec&, 31 const SkStrokeRec&,
34 const GrDrawTarget*) const { 32 const GrDrawTarget*) const {
35 return GrPathRenderer::kNoSupport_StencilSupport; 33 return GrPathRenderer::kNoSupport_StencilSupport;
36 } 34 }
37 35
38 namespace { 36 namespace {
39 37
40 //////////////////////////////////////////////////////////////////////////////// 38 ////////////////////////////////////////////////////////////////////////////////
41 // gets device coord bounds of path (not considering the fill) and clip. The 39 // gets device coord bounds of path (not considering the fill) and clip. The
42 // path bounds will be a subset of the clip bounds. returns false if 40 // path bounds will be a subset of the clip bounds. returns false if
(...skipping 63 matching lines...) Expand 10 before | Expand all | Expand 10 after
106 rect.iset(devClipBounds.fLeft, devPathBounds.fBottom, 104 rect.iset(devClipBounds.fLeft, devPathBounds.fBottom,
107 devClipBounds.fRight, devClipBounds.fBottom); 105 devClipBounds.fRight, devClipBounds.fBottom);
108 target->drawSimpleRect(rect, NULL); 106 target->drawSimpleRect(rect, NULL);
109 } 107 }
110 } 108 }
111 109
112 } 110 }
113 111
114 //////////////////////////////////////////////////////////////////////////////// 112 ////////////////////////////////////////////////////////////////////////////////
115 // return true on success; false on failure 113 // return true on success; false on failure
116 bool GrSoftwarePathRenderer::onDrawPath(const SkPath& path, 114 bool GrSoftwarePathRenderer::onDrawPath(const SkStrokeRec& stroke,
117 const SkStrokeRec& stroke,
118 GrDrawTarget* target, 115 GrDrawTarget* target,
119 bool antiAlias) { 116 bool antiAlias) {
120 117
121 if (NULL == fContext) { 118 if (NULL == fContext) {
122 return false; 119 return false;
123 } 120 }
124 121
125 GrDrawState* drawState = target->drawState(); 122 GrDrawState* drawState = target->drawState();
126 123
127 SkMatrix vm = drawState->getViewMatrix(); 124 SkMatrix vm = drawState->getViewMatrix();
128 125
129 SkIRect devPathBounds, devClipBounds; 126 SkIRect devPathBounds, devClipBounds;
130 if (!get_path_and_clip_bounds(target, path, vm, 127 if (!get_path_and_clip_bounds(target, this->path(), vm,
131 &devPathBounds, &devClipBounds)) { 128 &devPathBounds, &devClipBounds)) {
132 if (path.isInverseFillType()) { 129 if (this->path().isInverseFillType()) {
133 draw_around_inv_path(target, devClipBounds, devPathBounds); 130 draw_around_inv_path(target, devClipBounds, devPathBounds);
134 } 131 }
135 return true; 132 return true;
136 } 133 }
137 134
138 SkAutoTUnref<GrTexture> texture( 135 SkAutoTUnref<GrTexture> texture(
139 GrSWMaskHelper::DrawPathMaskToTexture(fContext, path, stroke, 136 GrSWMaskHelper::DrawPathMaskToTexture(fContext, this->path(), stroke ,
140 devPathBounds, 137 devPathBounds,
141 antiAlias, &vm)); 138 antiAlias, &vm));
142 if (NULL == texture) { 139 if (NULL == texture) {
143 return false; 140 return false;
144 } 141 }
145 142
146 GrSWMaskHelper::DrawToTargetWithPathMask(texture, target, devPathBounds); 143 GrSWMaskHelper::DrawToTargetWithPathMask(texture, target, devPathBounds);
147 144
148 if (path.isInverseFillType()) { 145 if (this->path().isInverseFillType()) {
149 draw_around_inv_path(target, devClipBounds, devPathBounds); 146 draw_around_inv_path(target, devClipBounds, devPathBounds);
150 } 147 }
151 148
152 return true; 149 return true;
153 } 150 }
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