chromium/skia/ext/geometry.h

// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef SKIA_EXT_GEOMETRY_H_
#define SKIA_EXT_GEOMETRY_H_

#include <vector>

#include "skia/config/SkUserConfig.h"
#include "third_party/skia/include/core/SkImage.h"
#include "third_party/skia/include/core/SkRect.h"
#include "third_party/skia/include/core/SkSize.h"

namespace skia {

// Returns a rect that has the same relationship to `output_bounds` as
// `input_rect` has to `input_bounds`. The only requirement for valid
// results is that `output_bounds` and `input_bounds` be non-empty.
SK_API SkRect ScaleSkRectProportional(const SkRect& output_bounds,
                                      const SkRect& input_bounds,
                                      const SkRect& input_rect);

// Helper structure for tiling a shader that has several input SkImages.
// In order for a shader executing in an accelerated context to sample
// from an SkImage, the SkImage must be upload-able to a texture. If
// an SkImage is too large to fit in a texture, then the draw call using
// the shader must be chopped multiple tiled draw calls.
class SK_API Tiling { … };

}  // namespace skia

#endif  // SKIA_EXT_GEOMETRY_H_