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 "GrPathProcessor.h"
9
10#include "gl/GrGLPathProcessor.h"
11#include "gl/GrGLGpu.h"
12
13GrPathProcessor::GrPathProcessor(GrColor color,
14                                 const SkMatrix& viewMatrix,
15                                 const SkMatrix& localMatrix)
16    : INHERITED(true)
17    , fColor(color)
18    , fViewMatrix(viewMatrix)
19    , fLocalMatrix(localMatrix) {
20    this->initClassID<GrPathProcessor>();
21}
22
23void GrPathProcessor::getInvariantOutputColor(GrInitInvariantOutput* out) const {
24    out->setKnownFourComponents(fColor);
25}
26
27void GrPathProcessor::getInvariantOutputCoverage(GrInitInvariantOutput* out) const {
28    out->setKnownSingleComponent(0xff);
29}
30
31void GrPathProcessor::initBatchTracker(GrBatchTracker* bt, const GrPipelineInfo& init) const {
32    PathBatchTracker* local = bt->cast<PathBatchTracker>();
33    if (init.fColorIgnored) {
34        local->fInputColorType = kIgnored_GrGPInput;
35        local->fColor = GrColor_ILLEGAL;
36    } else {
37        local->fInputColorType = kUniform_GrGPInput;
38        local->fColor = GrColor_ILLEGAL == init.fOverrideColor ? this->color() :
39                                                                 init.fOverrideColor;
40    }
41
42    local->fInputCoverageType = init.fCoverageIgnored ? kIgnored_GrGPInput : kAllOnes_GrGPInput;
43    local->fUsesLocalCoords = init.fUsesLocalCoords;
44}
45
46bool GrPathProcessor::canMakeEqual(const GrBatchTracker& m,
47                                   const GrPrimitiveProcessor& that,
48                                   const GrBatchTracker& t) const {
49    if (this->classID() != that.classID() || !this->hasSameTextureAccesses(that)) {
50        return false;
51    }
52
53    const GrPathProcessor& other = that.cast<GrPathProcessor>();
54    if (!this->viewMatrix().cheapEqualTo(other.viewMatrix())) {
55        return false;
56    }
57
58    const PathBatchTracker& mine = m.cast<PathBatchTracker>();
59    const PathBatchTracker& theirs = t.cast<PathBatchTracker>();
60    return CanCombineLocalMatrices(*this, mine.fUsesLocalCoords,
61                                   that, theirs.fUsesLocalCoords) &&
62           CanCombineOutput(mine.fInputColorType, mine.fColor,
63                            theirs.fInputColorType, theirs.fColor) &&
64           CanCombineOutput(mine.fInputCoverageType, 0xff,
65                            theirs.fInputCoverageType, 0xff);
66}
67
68void GrPathProcessor::getGLProcessorKey(const GrBatchTracker& bt,
69                                        const GrGLSLCaps& caps,
70                                        GrProcessorKeyBuilder* b) const {
71    GrGLPathProcessor::GenKey(*this, bt, caps, b);
72}
73
74GrGLPrimitiveProcessor* GrPathProcessor::createGLInstance(const GrBatchTracker& bt,
75                                                          const GrGLSLCaps& caps) const {
76    SkASSERT(caps.pathRenderingSupport());
77    return SkNEW_ARGS(GrGLPathProcessor, (*this, bt));
78}
79