1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
/*
* Copyright 2013 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "GrGLPathProcessor.h"
#include "GrPathProcessor.h"
#include "GrGLGpu.h"
#include "GrGLPathRendering.h"
GrGLPathProcessor::GrGLPathProcessor(const GrPathProcessor&, const GrBatchTracker&)
: fColor(GrColor_ILLEGAL) {}
void GrGLPathProcessor::emitCode(EmitArgs& args) {
GrGLGPBuilder* pb = args.fPB;
GrGLFragmentBuilder* fs = args.fPB->getFragmentShaderBuilder();
const PathBatchTracker& local = args.fBT.cast<PathBatchTracker>();
// emit transforms
this->emitTransforms(args.fPB, args.fTransformsIn, args.fTransformsOut);
// Setup uniform color
if (kUniform_GrGPInput == local.fInputColorType) {
const char* stagedLocalVarName;
fColorUniform = pb->addUniform(GrGLProgramBuilder::kFragment_Visibility,
kVec4f_GrSLType,
kDefault_GrSLPrecision,
"Color",
&stagedLocalVarName);
fs->codeAppendf("%s = %s;", args.fOutputColor, stagedLocalVarName);
}
// setup constant solid coverage
if (kAllOnes_GrGPInput == local.fInputCoverageType) {
fs->codeAppendf("%s = vec4(1);", args.fOutputCoverage);
}
}
void GrGLPathProcessor::GenKey(const GrPathProcessor&,
const GrBatchTracker& bt,
const GrGLSLCaps&,
GrProcessorKeyBuilder* b) {
const PathBatchTracker& local = bt.cast<PathBatchTracker>();
b->add32(local.fInputColorType | local.fInputCoverageType << 16);
}
void GrGLPathProcessor::setData(const GrGLProgramDataManager& pdman,
const GrPrimitiveProcessor& primProc,
const GrBatchTracker& bt) {
const PathBatchTracker& local = bt.cast<PathBatchTracker>();
if (kUniform_GrGPInput == local.fInputColorType && local.fColor != fColor) {
GrGLfloat c[4];
GrColorToRGBAFloat(local.fColor, c);
pdman.set4fv(fColorUniform, 1, c);
fColor = local.fColor;
}
}
void GrGLPathProcessor::emitTransforms(GrGLGPBuilder* pb, const TransformsIn& tin,
TransformsOut* tout) {
tout->push_back_n(tin.count());
fInstalledTransforms.push_back_n(tin.count());
for (int i = 0; i < tin.count(); i++) {
const ProcCoords& coordTransforms = tin[i];
fInstalledTransforms[i].push_back_n(coordTransforms.count());
for (int t = 0; t < coordTransforms.count(); t++) {
GrSLType varyingType =
coordTransforms[t]->getMatrix().hasPerspective() ? kVec3f_GrSLType :
kVec2f_GrSLType;
SkString strVaryingName("MatrixCoord");
strVaryingName.appendf("_%i_%i", i, t);
GrGLVertToFrag v(varyingType);
pb->addVarying(strVaryingName.c_str(), &v);
SeparableVaryingInfo& varyingInfo = fSeparableVaryingInfos.push_back();
varyingInfo.fVariable = pb->getFragmentShaderBuilder()->fInputs.back();
varyingInfo.fLocation = fSeparableVaryingInfos.count() - 1;
varyingInfo.fType = varyingType;
fInstalledTransforms[i][t].fHandle = ShaderVarHandle(varyingInfo.fLocation);
fInstalledTransforms[i][t].fType = varyingType;
SkNEW_APPEND_TO_TARRAY(&(*tout)[i], GrGLProcessor::TransformedCoords,
(SkString(v.fsIn()), varyingType));
}
}
}
void GrGLPathProcessor::resolveSeparableVaryings(GrGLGpu* gpu, GrGLuint programId) {
int count = fSeparableVaryingInfos.count();
for (int i = 0; i < count; ++i) {
GrGLint location;
GR_GL_CALL_RET(gpu->glInterface(),
location,
GetProgramResourceLocation(programId,
GR_GL_FRAGMENT_INPUT,
fSeparableVaryingInfos[i].fVariable.c_str()));
fSeparableVaryingInfos[i].fLocation = location;
}
}
void GrGLPathProcessor::setTransformData(
const GrPrimitiveProcessor& primProc,
int index,
const SkTArray<const GrCoordTransform*, true>& coordTransforms,
GrGLPathRendering* glpr,
GrGLuint programID) {
SkSTArray<2, Transform, true>& transforms = fInstalledTransforms[index];
int numTransforms = transforms.count();
for (int t = 0; t < numTransforms; ++t) {
SkASSERT(transforms[t].fHandle.isValid());
const SkMatrix& transform = GetTransformMatrix(primProc.localMatrix(),
*coordTransforms[t]);
if (transforms[t].fCurrentValue.cheapEqualTo(transform)) {
continue;
}
transforms[t].fCurrentValue = transform;
const SeparableVaryingInfo& fragmentInput =
fSeparableVaryingInfos[transforms[t].fHandle.handle()];
SkASSERT(transforms[t].fType == kVec2f_GrSLType ||
transforms[t].fType == kVec3f_GrSLType);
unsigned components = transforms[t].fType == kVec2f_GrSLType ? 2 : 3;
glpr->setProgramPathFragmentInputTransform(programID,
fragmentInput.fLocation,
GR_GL_OBJECT_LINEAR,
components,
transform);
}
}
|
