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

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

#ifndef GrDefaultGeoProcFactory_DEFINED
#define GrDefaultGeoProcFactory_DEFINED

#include "include/private/SkColorData.h"
#include "include/private/base/SkAssert.h"

#include <cstdint>

class GrGeometryProcessor;
class SkArenaAlloc;
class SkMatrix;

/*
 * A factory for creating default Geometry Processors which simply multiply position by the uniform
 * view matrix and wire through color, coverage, UV coords if requested.
 */
namespace GrDefaultGeoProcFactory {
    struct Color { … };

    struct Coverage { … };

    struct LocalCoords { … };

    GrGeometryProcessor* Make(SkArenaAlloc*,
                              const Color&,
                              const Coverage&,
                              const LocalCoords&,
                              const SkMatrix& viewMatrix);

    /*
     * Use this factory to create a GrGeometryProcessor that expects a device space vertex position
     * attribute. The view matrix must still be provided to compute correctly transformed
     * coordinates for GrFragmentProcessors. It may fail if the view matrix is not invertible.
     */
    GrGeometryProcessor* MakeForDeviceSpace(SkArenaAlloc*,
                                            const Color&,
                                            const Coverage&,
                                            const LocalCoords&,
                                            const SkMatrix& viewMatrix);
}  // namespace GrDefaultGeoProcFactory

#endif