chromium/third_party/skia/src/gpu/ganesh/GrDefaultGeoProcFactory.cpp

/*
 * Copyright 2014 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#include "src/gpu/ganesh/GrDefaultGeoProcFactory.h"

#include "include/core/SkMatrix.h"
#include "include/private/base/SkTo.h"
#include "include/private/gpu/ganesh/GrTypesPriv.h"
#include "src/base/SkArenaAlloc.h"
#include "src/base/SkRandom.h"
#include "src/core/SkSLTypeShared.h"
#include "src/gpu/KeyBuilder.h"
#include "src/gpu/ganesh/GrColor.h"
#include "src/gpu/ganesh/GrGeometryProcessor.h"
#include "src/gpu/ganesh/GrProcessorUnitTest.h"
#include "src/gpu/ganesh/GrShaderVar.h"
#include "src/gpu/ganesh/GrTestUtils.h"
#include "src/gpu/ganesh/glsl/GrGLSLFragmentShaderBuilder.h"
#include "src/gpu/ganesh/glsl/GrGLSLProgramDataManager.h"
#include "src/gpu/ganesh/glsl/GrGLSLUniformHandler.h"
#include "src/gpu/ganesh/glsl/GrGLSLVarying.h"
#include "src/gpu/ganesh/glsl/GrGLSLVertexGeoBuilder.h"

#include <memory>

struct GrShaderCaps;

/*
 * The default Geometry Processor simply takes position and multiplies it by the uniform view
 * matrix. It also leaves coverage untouched.  Behind the scenes, we may add per vertex color or
 * local coords.
 */

enum GPFlag { … };

class DefaultGeoProc : public GrGeometryProcessor { … };

GR_DEFINE_GEOMETRY_PROCESSOR_TEST(…)

#if defined(GPU_TEST_UTILS)
GrGeometryProcessor* DefaultGeoProc::TestCreate(GrProcessorTestData* d) {
    uint32_t flags = 0;
    if (d->fRandom->nextBool()) {
        flags |= kColorAttribute_GPFlag;
    }
    if (d->fRandom->nextBool()) {
        flags |= kColorAttributeIsWide_GPFlag;
    }
    if (d->fRandom->nextBool()) {
        flags |= kCoverageAttribute_GPFlag;
        if (d->fRandom->nextBool()) {
            flags |= (d->fRandom->nextBool()) ? kCoverageAttributeTweak_GPFlag
                                              : kCoverageAttributeUnclamped_GPFlag;
        }
    }
    if (d->fRandom->nextBool()) {
        flags |= kLocalCoordAttribute_GPFlag;
    }

    GrColor color = GrTest::RandomColor(d->fRandom);
    SkMatrix viewMtx = GrTest::TestMatrix(d->fRandom);
    SkMatrix localMtx = GrTest::TestMatrix(d->fRandom);
    bool readsLocalCoords = d->fRandom->nextBool();
    uint8_t coverage = GrTest::RandomCoverage(d->fRandom);
    return DefaultGeoProc::Make(d->allocator(),
                                flags,
                                SkPMColor4f::FromBytes_RGBA(color),
                                viewMtx,
                                localMtx,
                                readsLocalCoords,
                                coverage);
}
#endif

GrGeometryProcessor* GrDefaultGeoProcFactory::Make(SkArenaAlloc* arena,
                                                   const Color& color,
                                                   const Coverage& coverage,
                                                   const LocalCoords& localCoords,
                                                   const SkMatrix& viewMatrix) { … }

GrGeometryProcessor* GrDefaultGeoProcFactory::MakeForDeviceSpace(SkArenaAlloc* arena,
                                                                 const Color& color,
                                                                 const Coverage& coverage,
                                                                 const LocalCoords& localCoords,
                                                                 const SkMatrix& viewMatrix) { … }