dawn-cmake/scripts/dawn_features.gni
Stephen White 21ce5d2965 Split #defines for OpenGL and OpenGL ES backends.
This permits enabling the OpenGL and OpenGL ES backends independently.
This change also enables the OpenGL ES backend on Windows.

This will cause the end2end tests to run on OpenGL ES on the
GPU-less bots, via SwANGLE.

Bug: dawn:580

Change-Id: I43d514b18862d176610b95e97013a67723ddac20
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/50881
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Stephen White <senorblanco@chromium.org>
2021-05-17 18:04:48 +00:00

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# 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
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import("//build_overrides/build.gni")
if (build_with_chromium) {
import("//build/config/sanitizers/sanitizers.gni")
import("//build/config/ui.gni")
dawn_use_x11 = use_x11
} else {
declare_args() {
# Whether Dawn should enable X11 support.
dawn_use_x11 = is_linux && !is_chromeos
}
}
# Enable the compilation for UWP
dawn_is_winuwp = is_win && target_os == "winuwp"
declare_args() {
dawn_use_angle = true
# 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_desktop_gl = is_linux && !is_chromeos
# Enables the compilation of Dawn's OpenGLES backend
# (WebGPU/Compat subset)
dawn_enable_opengles = (is_linux && !is_chromeos) || is_win
# Enables the compilation of Dawn's Vulkan backend
# Disables vulkan when compiling for UWP, since UWP only supports d3d
dawn_enable_vulkan = is_linux || is_chromeos || (is_win && !dawn_is_winuwp) ||
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)
}
# 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
}
# UWP only supports CoreWindow for windowing
dawn_supports_glfw_for_windowing =
(is_win && !dawn_is_winuwp) || (is_linux && !is_chromeos) || is_mac
# Much of the backend code is shared, so define a convenience var.
dawn_enable_opengl = dawn_enable_opengles || dawn_enable_desktop_gl