blob: 9d3cbfcf250614cf7defa0f16b58746e841e882c [file] [log] [blame]
# Copyright 2018 The Dawn Authors
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# See the License for the specific language governing permissions and
# limitations under the License.
if (build_with_chromium) {
declare_args() {
# Enables usage of swiftshader on the Vulkan backend.
# Note that this will only work in standalone and in projects that set the
# dawn_swiftshader_dir variable in build_overrides/dawn.gni
# Because of how the Vulkan loader works, setting this makes Dawn only able
# to find the Swiftshader ICD and not the others.
# Enabled by default when fuzzing.
dawn_use_swiftshader = build_with_chromium && use_fuzzing_engine
declare_args() {
# Enable Dawn's ASSERTs even in release builds
dawn_always_assert = false
# Should the Dawn static libraries be fully linked vs. GN's default of
# treating them as source sets. This is useful for people using Dawn
# standalone to produce static libraries to use in their projects.
dawn_complete_static_libs = false
# Enables the compilation of Dawn's D3D12 backend
dawn_enable_d3d12 = is_win
# Enables the compilation of Dawn's Metal backend
dawn_enable_metal = is_mac
# Enables the compilation of Dawn's Null backend
# (required for unittests, obviously non-conformant)
dawn_enable_null = true
# Enables the compilation of Dawn's OpenGL backend
# (best effort, non-conformant)
dawn_enable_opengl = is_linux && !is_chromeos
# Enables the compilation of Dawn's Vulkan backend
dawn_enable_vulkan =
is_linux || is_win || is_fuchsia || is_android || dawn_use_swiftshader
# Enable use of reflection compiler in spirv-cross. This is needed
# if performing reflection on systems that the platform language
# shader is SPIR-V, since there isn't an instance of the
# GLSL/HLSL/MSL compiler. This implicitly pulls in the GLSL
# compiler, since it is a sub-class of it.
dawn_enable_cross_reflection = false
# Enables error injection for faking failures to native API calls
dawn_enable_error_injection =
is_debug || (build_with_chromium && use_fuzzing_engine)
# Whether Dawn should enable X11 support.
dawn_use_x11 = is_linux && !is_chromeos
# Enable support WGSL for shaders.
# Turned off for Skia, because Tint is currently not part of its DEPS.
dawn_enable_wgsl = !defined(is_skia_standalone)
# GN does not allow reading a variable defined in the same declare_args().
# Put them in two separate declare_args() when setting the value of one
# argument based on another.
declare_args() {
# Uses our built version of the Vulkan validation layers
dawn_enable_vulkan_validation_layers =
dawn_enable_vulkan && ((is_linux && !is_chromeos) || is_win || is_mac)
# Uses our built version of the Vulkan loader on platforms where we can't
# assume to have one present at the system level.
dawn_enable_vulkan_loader = dawn_enable_vulkan && is_mac
dawn_supports_glfw_for_windowing =
is_win || (is_linux && !is_chromeos) || is_mac