src/libANGLE/renderer/metal/metal_backend.gni

# Copyright 2022 The ANGLE Project 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("../../../../gni/angle.gni")

metal_backend_sources = [
  "BufferMtl.h",
  "BufferMtl.mm",
  "CompilerMtl.h",
  "CompilerMtl.mm",
  "ContextMtl.h",
  "ContextMtl.mm",
  "DeviceMtl.h",
  "DeviceMtl.mm",
  "DisplayMtl.h",
  "DisplayMtl.mm",
  "DisplayMtl_api.h",
  "FrameBufferMtl.h",
  "FrameBufferMtl.mm",
  "IOSurfaceSurfaceMtl.h",
  "IOSurfaceSurfaceMtl.mm",
  "ImageMtl.h",
  "ImageMtl.mm",
  "ProgramExecutableMtl.h",
  "ProgramExecutableMtl.mm",
  "ProgramMtl.h",
  "ProgramMtl.mm",
  "ProvokingVertexHelper.h",
  "ProvokingVertexHelper.mm",
  "QueryMtl.h",
  "QueryMtl.mm",
  "RenderBufferMtl.h",
  "RenderBufferMtl.mm",
  "RenderTargetMtl.h",
  "RenderTargetMtl.mm",
  "SamplerMtl.h",
  "SamplerMtl.mm",
  "ShaderMtl.h",
  "ShaderMtl.mm",
  "SurfaceMtl.h",
  "SurfaceMtl.mm",
  "SyncMtl.h",
  "SyncMtl.mm",
  "TextureMtl.h",
  "TextureMtl.mm",
  "TransformFeedbackMtl.h",
  "TransformFeedbackMtl.mm",
  "VertexArrayMtl.h",
  "VertexArrayMtl.mm",
  "blocklayoutMetal.cpp",
  "blocklayoutMetal.h",
  "mtl_buffer_manager.h",
  "mtl_buffer_manager.mm",
  "mtl_buffer_pool.h",
  "mtl_buffer_pool.mm",
  "mtl_command_buffer.h",
  "mtl_command_buffer.mm",
  "mtl_common.h",
  "mtl_common.mm",
  "mtl_context_device.h",
  "mtl_context_device.mm",
  "mtl_format_table_autogen.mm",
  "mtl_format_utils.h",
  "mtl_format_utils.mm",
  "mtl_library_cache.h",
  "mtl_library_cache.mm",
  "mtl_msl_utils.h",
  "mtl_msl_utils.mm",
  "mtl_occlusion_query_pool.h",
  "mtl_occlusion_query_pool.mm",
  "mtl_pipeline_cache.h",
  "mtl_pipeline_cache.mm",
  "mtl_render_utils.h",
  "mtl_render_utils.mm",
  "mtl_resource_spi.h",
  "mtl_resources.h",
  "mtl_resources.mm",
  "mtl_state_cache.h",
  "mtl_state_cache.mm",
  "mtl_utils.h",
  "mtl_utils.mm",
  "renderermtl_utils.cpp",
  "renderermtl_utils.h",
  "shaders/constants.h",
  "shaders/mtl_internal_shaders_src_autogen.h",
  "shaders/rewrite_indices_shared.h",
]

declare_args() {
  # Path to Metal toolchain binaries ("metal" and "metallib").
  # Set to precompile internal shaders for iOS or cross-compilation.
  # Leave empty for default behavior.
  angle_metal_toolchain_dir = ""
}

# We can build the ANGLE internal shaders at build-time if we have access to the
# Mac SDK in the "build" dir. Building internal shaders for iOS is not
# supported by default. The Chromium Mac SDK does not have all the required
# files. This is also an issue when cross-compiling for mac. Providing an
# explicit Metal toolchain via "angle_metal_toolchain_dir" opts in to
# precompiling the internal shaders anyway, which enables prebuilt internal
# shaders for iOS as well.
metal_internal_shader_compilation_supported =
    angle_has_build &&
    (angle_metal_toolchain_dir != "" || (!is_ios && target_os == host_os))

metal_internal_shaders_header =
    "$root_gen_dir/angle/mtl_internal_shaders_metallib.h"
if (metal_internal_shader_compilation_supported) {
  metal_backend_sources += [ metal_internal_shaders_header ]
}