bin/ui/sketchy/stroke/stroke_tessellator.h

// Copyright 2017 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef GARNET_BIN_UI_SKETCHY_STROKE_STROKE_TESSELLATOR_H_
#define GARNET_BIN_UI_SKETCHY_STROKE_STROKE_TESSELLATOR_H_

#include "garnet/public/lib/escher/impl/compute_shader.h"

namespace sketchy_service {

// Provides kernel to tessellate strokes on GPU.
class StrokeTessellator final {
 public:
  explicit StrokeTessellator(escher::EscherWeakPtr escher);

  void Dispatch(const escher::BufferPtr& stroke_info_buffer,
                const escher::BufferPtr& control_points_buffer,
                const escher::BufferPtr& re_params_buffer,
                const escher::BufferPtr& division_counts_buffer,
                const escher::BufferPtr& cumulative_division_counts_buffer,
                const escher::BufferPtr& division_segment_index_buffer,
                escher::BufferPtr vertex_buffer,
                const escher::impl::BufferRange& vertex_range,
                escher::BufferPtr index_buffer,
                const escher::impl::BufferRange& index_range,
                escher::impl::CommandBuffer* command,
                escher::TimestampProfiler* profiler, uint32_t division_count,
                bool apply_barrier);

 private:
  escher::impl::ComputeShader kernel_;
};

}  // namespace sketchy_service

#endif  // GARNET_BIN_UI_SKETCHY_STROKE_STROKE_TESSELLATOR_H_