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Side by Side Diff: src/gpu/gl/GrGLPathProcessor.cpp

Issue 920863002: A simple change to move a bunch of stuff out of Gr*Geometry.h (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: clang fix Created 5 years, 10 months ago
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1 /*
2 * Copyright 2013 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 #include "GrGLPathProcessor.h"
9
10 #include "GrPathProcessor.h"
11 #include "GrGLGpu.h"
12 #include "GrGLPathRendering.h"
13
14 GrGLPathProcessor::GrGLPathProcessor(const GrPathProcessor&, const GrBatchTracke r&)
15 : fColor(GrColor_ILLEGAL) {}
16
17 void GrGLPathProcessor::emitCode(EmitArgs& args) {
18 GrGLGPBuilder* pb = args.fPB;
19 GrGLGPFragmentBuilder* fs = args.fPB->getFragmentShaderBuilder();
20 const PathBatchTracker& local = args.fBT.cast<PathBatchTracker>();
21
22 // emit transforms
23 this->emitTransforms(args.fPB, args.fTransformsIn, args.fTransformsOut);
24
25 // Setup uniform color
26 if (kUniform_GrGPInput == local.fInputColorType) {
27 const char* stagedLocalVarName;
28 fColorUniform = pb->addUniform(GrGLProgramBuilder::kFragment_Visibility,
29 kVec4f_GrSLType,
30 kDefault_GrSLPrecision,
31 "Color",
32 &stagedLocalVarName);
33 fs->codeAppendf("%s = %s;", args.fOutputColor, stagedLocalVarName);
34 }
35
36 // setup constant solid coverage
37 if (kAllOnes_GrGPInput == local.fInputCoverageType) {
38 fs->codeAppendf("%s = vec4(1);", args.fOutputCoverage);
39 }
40 }
41
42 void GrGLPathProcessor::GenKey(const GrPathProcessor&,
43 const GrBatchTracker& bt,
44 const GrGLCaps&,
45 GrProcessorKeyBuilder* b) {
46 const PathBatchTracker& local = bt.cast<PathBatchTracker>();
47 b->add32(local.fInputColorType | local.fInputCoverageType << 16);
48 }
49
50 void GrGLPathProcessor::setData(const GrGLProgramDataManager& pdman,
51 const GrPrimitiveProcessor& primProc,
52 const GrBatchTracker& bt) {
53 const PathBatchTracker& local = bt.cast<PathBatchTracker>();
54 if (kUniform_GrGPInput == local.fInputColorType && local.fColor != fColor) {
55 GrGLfloat c[4];
56 GrColorToRGBAFloat(local.fColor, c);
57 pdman.set4fv(fColorUniform, 1, c);
58 fColor = local.fColor;
59 }
60 }
61
62 //////////////////////////////////////////////////////////////////////////////// ///////////////////
63
64 void GrGLLegacyPathProcessor::emitTransforms(GrGLGPBuilder*, const TransformsIn& tin,
65 TransformsOut* tout) {
66 tout->push_back_n(tin.count());
67 fInstalledTransforms.push_back_n(tin.count());
68 for (int i = 0; i < tin.count(); i++) {
69 const ProcCoords& coordTransforms = tin[i];
70 int texCoordIndex = this->addTexCoordSets(coordTransforms.count());
71
72 // Use the first uniform location as the texcoord index.
73 fInstalledTransforms[i].push_back_n(1);
74 fInstalledTransforms[i][0].fHandle = ShaderVarHandle(texCoordIndex);
75
76 SkString name;
77 for (int t = 0; t < coordTransforms.count(); ++t) {
78 GrSLType type = coordTransforms[t]->getMatrix().hasPerspective() ? k Vec3f_GrSLType :
79 k Vec2f_GrSLType;
80
81 name.printf("%s(gl_TexCoord[%i])", GrGLSLTypeString(type), texCoordI ndex++);
82 SkNEW_APPEND_TO_TARRAY(&(*tout)[i], GrGLProcessor::TransformedCoords , (name, type));
83 }
84 }
85 }
86
87 void GrGLLegacyPathProcessor::setTransformData(
88 const GrPrimitiveProcessor& primProc,
89 int index,
90 const SkTArray<const GrCoordTransform*, true>& transforms,
91 GrGLPathRendering* glpr,
92 GrGLuint) {
93 // We've hidden the texcoord index in the first entry of the transforms arra y for each
94 // effect
95 int texCoordIndex = fInstalledTransforms[index][0].fHandle.handle();
96 for (int t = 0; t < transforms.count(); ++t) {
97 const SkMatrix& transform = GetTransformMatrix(primProc.localMatrix(), * transforms[t]);
98 GrGLPathRendering::PathTexGenComponents components =
99 GrGLPathRendering::kST_PathTexGenComponents;
100 if (transform.hasPerspective()) {
101 components = GrGLPathRendering::kSTR_PathTexGenComponents;
102 }
103 glpr->enablePathTexGen(texCoordIndex++, components, transform);
104 }
105 }
106
107 void GrGLLegacyPathProcessor::didSetData(GrGLPathRendering* glpr) {
108 glpr->flushPathTexGenSettings(fTexCoordSetCnt);
109 }
110
111 //////////////////////////////////////////////////////////////////////////////// ///////////////////
112
113 void GrGLNormalPathProcessor::emitTransforms(GrGLGPBuilder* pb, const Transforms In& tin,
114 TransformsOut* tout) {
115 tout->push_back_n(tin.count());
116 fInstalledTransforms.push_back_n(tin.count());
117 for (int i = 0; i < tin.count(); i++) {
118 const ProcCoords& coordTransforms = tin[i];
119 fInstalledTransforms[i].push_back_n(coordTransforms.count());
120 for (int t = 0; t < coordTransforms.count(); t++) {
121 GrSLType varyingType =
122 coordTransforms[t]->getMatrix().hasPerspective() ? kVec3f_Gr SLType :
123 kVec2f_Gr SLType;
124
125
126 SkString strVaryingName("MatrixCoord");
127 strVaryingName.appendf("_%i_%i", i, t);
128 GrGLVertToFrag v(varyingType);
129 pb->addVarying(strVaryingName.c_str(), &v);
130 SeparableVaryingInfo& varyingInfo = fSeparableVaryingInfos.push_back ();
131 varyingInfo.fVariable = pb->getFragmentShaderBuilder()->fInputs.back ();
132 varyingInfo.fLocation = fSeparableVaryingInfos.count() - 1;
133 varyingInfo.fType = varyingType;
134 fInstalledTransforms[i][t].fHandle = ShaderVarHandle(varyingInfo.fLo cation);
135 fInstalledTransforms[i][t].fType = varyingType;
136
137 SkNEW_APPEND_TO_TARRAY(&(*tout)[i], GrGLProcessor::TransformedCoords ,
138 (SkString(v.fsIn()), varyingType));
139 }
140 }
141 }
142
143 void GrGLNormalPathProcessor::resolveSeparableVaryings(GrGLGpu* gpu, GrGLuint pr ogramId) {
144 int count = fSeparableVaryingInfos.count();
145 for (int i = 0; i < count; ++i) {
146 GrGLint location;
147 GR_GL_CALL_RET(gpu->glInterface(),
148 location,
149 GetProgramResourceLocation(programId,
150 GR_GL_FRAGMENT_INPUT,
151 fSeparableVaryingInfos[i].fVar iable.c_str()));
152 fSeparableVaryingInfos[i].fLocation = location;
153 }
154 }
155
156 void GrGLNormalPathProcessor::setTransformData(
157 const GrPrimitiveProcessor& primProc,
158 int index,
159 const SkTArray<const GrCoordTransform*, true>& coordTransforms,
160 GrGLPathRendering* glpr,
161 GrGLuint programID) {
162 SkSTArray<2, Transform, true>& transforms = fInstalledTransforms[index];
163 int numTransforms = transforms.count();
164 for (int t = 0; t < numTransforms; ++t) {
165 SkASSERT(transforms[t].fHandle.isValid());
166 const SkMatrix& transform = GetTransformMatrix(primProc.localMatrix(),
167 *coordTransforms[t]);
168 if (transforms[t].fCurrentValue.cheapEqualTo(transform)) {
169 continue;
170 }
171 transforms[t].fCurrentValue = transform;
172 const SeparableVaryingInfo& fragmentInput =
173 fSeparableVaryingInfos[transforms[t].fHandle.handle()];
174 SkASSERT(transforms[t].fType == kVec2f_GrSLType ||
175 transforms[t].fType == kVec3f_GrSLType);
176 unsigned components = transforms[t].fType == kVec2f_GrSLType ? 2 : 3;
177 glpr->setProgramPathFragmentInputTransform(programID,
178 fragmentInput.fLocation,
179 GR_GL_OBJECT_LINEAR,
180 components,
181 transform);
182 }
183 }
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