# Copyright 2020 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.

import("//build/components.gni")
import("//build/rust/rustc_library.gni")

rustc_library("surpass") {
  name = "surpass"
  with_unit_tests = true
  version = "0.1.0"
  edition = "2021"
  deps = [
    "//third_party/rust_crates:crossbeam-utils",
    "//third_party/rust_crates:rayon",
    "//third_party/rust_crates:rustc-hash",
  ]

  if (target_cpu == "x64" || target_cpu == "arm64") {
    deps += [ "//third_party/rust_crates:zerocopy" ]
  }

  # TODO(https://fxbug.dev/42175080): Fix the leaks and remove this.
  test_deps = [
    "//build/config/sanitizers:suppress-lsan.DO-NOT-USE-THIS",
    "//third_party/rust_crates:half",
  ]

  configs += [ ":surpass-performance" ]

  sources = [
    "src/affine_transform.rs",
    "src/extend.rs",
    "src/layer.rs",
    "src/layout/mod.rs",
    "src/layout/slice_cache.rs",
    "src/lib.rs",
    "src/lines.rs",
    "src/order.rs",
    "src/painter/layer_workbench/mod.rs",
    "src/painter/layer_workbench/passes/mod.rs",
    "src/painter/layer_workbench/passes/skip_fully_covered_layers.rs",
    "src/painter/layer_workbench/passes/skip_trivial_clips.rs",
    "src/painter/layer_workbench/passes/tile_unchanged.rs",
    "src/painter/mod.rs",
    "src/painter/style.rs",
    "src/path.rs",
    "src/point.rs",
    "src/rasterizer/grouped_iter.rs",
    "src/rasterizer/mod.rs",
    "src/rasterizer/pixel_segment.rs",
    "src/simd/aarch64.rs",
    "src/simd/auto.rs",
    "src/simd/avx.rs",
    "src/simd/mod.rs",
    "src/transform.rs",
  ]
}

config("surpass-performance") {
  # Enable all optimizations that benefit speed, even if they increase size
  configs = [ "//build/config:optimize_speed" ]

  if (target_cpu == "x64") {
    # TODO(https://fxbug.dev/42168719): not all x64 targets are haswell.
    # Consider moving this to a board config.
    configs += [ "//build/config/x64:haswell" ]
  }

  if (target_cpu == "arm64") {
    # TODO(https://fxbug.dev/42168343): the flag below is not added by default.
    # It's safe to remove the line below when //build/config/arm64:cortex-a53
    # picks up this flag.
    # Also note that not all arm64 targets are cortex-a53.
    # Depending on your target board this optimization flag may actually
    # cause a regression.
    rustflags = [ "-Ctarget-cpu=cortex-a53" ]
  }
}

fuchsia_unittest_package("surpass-tests") {
  deps = [ ":surpass_test" ]
}