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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/gl/init/gl_display_initializer.h"
#include "base/command_line.h"
#include "base/containers/contains.h"
#include "ui/gl/gl_bindings.h"
#include "ui/gl/gl_features.h"
#include "ui/gl/gl_implementation.h"
#include "ui/gl/gl_utils.h"
#include "ui/gl/init/gl_factory.h"
#include "ui/gl/startup_trace.h"
namespace gl::init {
namespace {
void AddInitDisplay(std::vector<DisplayType>* init_displays,
DisplayType display_type) {
// Make sure to not add the same display type twice.
if (!base::Contains(*init_displays, display_type)) {
init_displays->push_back(display_type);
}
}
void GetEGLInitDisplays(bool supports_angle_d3d,
bool supports_angle_opengl,
bool supports_angle_null,
bool supports_angle_vulkan,
bool supports_angle_swiftshader,
bool supports_angle_opengl_egl,
bool supports_angle_metal,
const base::CommandLine* command_line,
std::vector<DisplayType>* init_displays) {
GPU_STARTUP_TRACE_EVENT("gl_display_initializer::GetEGLInitDisplays");
// Check which experiment groups we're in. Check these early in the function
// so that finch assigns a group before the final decision to use the API is
// made. If we check too late, it will appear that some users are missing from
// the group if they are falling back to another path due to crashes or
// missing support.
bool default_angle_opengl =
base::FeatureList::IsEnabled(features::kDefaultANGLEOpenGL);
bool default_angle_metal =
base::FeatureList::IsEnabled(features::kDefaultANGLEMetal);
bool default_angle_vulkan = features::IsDefaultANGLEVulkan();
const char* default_software_renderer = kANGLEImplementationSwiftShaderName;
#if BUILDFLAG(IS_WIN)
if (base::FeatureList::IsEnabled(features::kAllowD3D11WarpFallback)) {
default_software_renderer = kANGLEImplementationD3D11WarpName;
}
#endif
// If we're already requesting software GL, make sure we don't fallback to the
// GPU
bool force_software_gl =
IsSoftwareGLImplementation(GetGLImplementationParts());
std::string requested_renderer =
force_software_gl
? default_software_renderer
: command_line->GetSwitchValueASCII(switches::kUseANGLE);
bool use_angle_default =
!force_software_gl &&
(!command_line->HasSwitch(switches::kUseANGLE) ||
requested_renderer == kANGLEImplementationDefaultName);
if (supports_angle_null &&
(requested_renderer == kANGLEImplementationNullName ||
gl::GetANGLEImplementation() == ANGLEImplementation::kNull)) {
AddInitDisplay(init_displays, ANGLE_NULL);
return;
}
// If no display has been explicitly requested and the DefaultANGLEOpenGL
// experiment is enabled, try creating OpenGL displays first.
// TODO(oetuaho@nvidia.com): Only enable this path on specific GPUs with a
// blocklist entry. http://crbug.com/693090
if (supports_angle_opengl && use_angle_default && default_angle_opengl) {
AddInitDisplay(init_displays, ANGLE_OPENGL);
AddInitDisplay(init_displays, ANGLE_OPENGLES);
}
if (supports_angle_metal && use_angle_default && default_angle_metal &&
!GetGlWorkarounds().disable_metal) {
AddInitDisplay(init_displays, ANGLE_METAL);
}
if (supports_angle_vulkan && use_angle_default && default_angle_vulkan) {
AddInitDisplay(init_displays, ANGLE_VULKAN);
}
if (supports_angle_d3d) {
if (use_angle_default) {
// Default mode for ANGLE - try D3D11, else try D3D9
if (!GetGlWorkarounds().disable_d3d11) {
AddInitDisplay(init_displays, ANGLE_D3D11);
}
AddInitDisplay(init_displays, ANGLE_D3D9);
} else {
if (requested_renderer == kANGLEImplementationD3D11Name) {
AddInitDisplay(init_displays, ANGLE_D3D11);
} else if (requested_renderer == kANGLEImplementationD3D9Name) {
AddInitDisplay(init_displays, ANGLE_D3D9);
} else if (requested_renderer == kANGLEImplementationD3D11NULLName) {
AddInitDisplay(init_displays, ANGLE_D3D11_NULL);
} else if (requested_renderer == kANGLEImplementationD3D11on12Name) {
AddInitDisplay(init_displays, ANGLE_D3D11on12);
} else if (requested_renderer == kANGLEImplementationD3D11WarpName) {
AddInitDisplay(init_displays, ANGLE_D3D11_WARP);
}
}
}
if (supports_angle_opengl) {
if (use_angle_default && !supports_angle_d3d) {
#if BUILDFLAG(IS_ANDROID)
// Don't request desktopGL on android
AddInitDisplay(init_displays, ANGLE_OPENGLES);
#else
AddInitDisplay(init_displays, ANGLE_OPENGL);
AddInitDisplay(init_displays, ANGLE_OPENGLES);
#endif // BUILDFLAG(IS_ANDROID)
} else {
if (requested_renderer == kANGLEImplementationOpenGLName) {
AddInitDisplay(init_displays, ANGLE_OPENGL);
} else if (requested_renderer == kANGLEImplementationOpenGLESName) {
AddInitDisplay(init_displays, ANGLE_OPENGLES);
} else if (requested_renderer == kANGLEImplementationOpenGLNULLName) {
AddInitDisplay(init_displays, ANGLE_OPENGL_NULL);
} else if (requested_renderer == kANGLEImplementationOpenGLESNULLName) {
AddInitDisplay(init_displays, ANGLE_OPENGLES_NULL);
} else if (requested_renderer == kANGLEImplementationOpenGLEGLName &&
supports_angle_opengl_egl) {
AddInitDisplay(init_displays, ANGLE_OPENGL_EGL);
} else if (requested_renderer == kANGLEImplementationOpenGLESEGLName &&
supports_angle_opengl_egl) {
AddInitDisplay(init_displays, ANGLE_OPENGLES_EGL);
}
}
}
if (supports_angle_vulkan) {
if (use_angle_default) {
if (!supports_angle_d3d && !supports_angle_opengl) {
AddInitDisplay(init_displays, ANGLE_VULKAN);
}
} else if (requested_renderer == kANGLEImplementationVulkanName) {
AddInitDisplay(init_displays, ANGLE_VULKAN);
} else if (requested_renderer == kANGLEImplementationVulkanNULLName) {
AddInitDisplay(init_displays, ANGLE_VULKAN_NULL);
}
}
if (supports_angle_swiftshader) {
if (requested_renderer == kANGLEImplementationSwiftShaderName ||
requested_renderer == kANGLEImplementationSwiftShaderForWebGLName) {
AddInitDisplay(init_displays, ANGLE_SWIFTSHADER);
}
}
if (supports_angle_metal) {
if (use_angle_default) {
if (!supports_angle_opengl) {
AddInitDisplay(init_displays, ANGLE_METAL);
}
} else if (requested_renderer == kANGLEImplementationMetalName) {
AddInitDisplay(init_displays, ANGLE_METAL);
} else if (requested_renderer == kANGLEImplementationMetalNULLName) {
AddInitDisplay(init_displays, ANGLE_METAL_NULL);
}
}
// If no displays are available due to missing angle extensions or invalid
// flags, request the default display.
if (init_displays->empty()) {
init_displays->push_back(DEFAULT);
}
}
} // namespace
void GetEGLInitDisplaysForTesting(bool supports_angle_d3d, // IN-TEST
bool supports_angle_opengl,
bool supports_angle_null,
bool supports_angle_vulkan,
bool supports_angle_swiftshader,
bool supports_angle_opengl_egl,
bool supports_angle_metal,
const base::CommandLine* command_line,
std::vector<DisplayType>* init_displays) {
GetEGLInitDisplays(supports_angle_d3d, supports_angle_opengl,
supports_angle_null, supports_angle_vulkan,
supports_angle_swiftshader, supports_angle_opengl_egl,
supports_angle_metal, command_line, init_displays);
}
void GetDisplayInitializationParams(bool* supports_angle,
std::vector<DisplayType>* init_displays) {
std::vector<GLImplementationParts> allowed_impls =
GetAllowedGLImplementations();
bool supports_angle_d3d = false;
bool supports_angle_opengl = false;
bool supports_angle_null = false;
bool supports_angle_vulkan = false;
bool supports_angle_swiftshader = false;
bool supports_angle_opengl_egl = false;
bool supports_angle_metal = false;
// Check for availability of ANGLE extensions.
if (g_driver_egl.client_ext.b_EGL_ANGLE_platform_angle) {
supports_angle_d3d =
g_driver_egl.client_ext.b_EGL_ANGLE_platform_angle_d3d &&
(gl::GLImplementationParts(gl::ANGLEImplementation::kD3D9)
.IsAllowed(allowed_impls) ||
gl::GLImplementationParts(gl::ANGLEImplementation::kD3D11)
.IsAllowed(allowed_impls));
supports_angle_opengl =
g_driver_egl.client_ext.b_EGL_ANGLE_platform_angle_opengl &&
(gl::GLImplementationParts(gl::ANGLEImplementation::kOpenGL)
.IsAllowed(allowed_impls) ||
gl::GLImplementationParts(gl::ANGLEImplementation::kOpenGLES)
.IsAllowed(allowed_impls));
supports_angle_null =
g_driver_egl.client_ext.b_EGL_ANGLE_platform_angle_null;
supports_angle_vulkan =
g_driver_egl.client_ext.b_EGL_ANGLE_platform_angle_vulkan &&
gl::GLImplementationParts(gl::ANGLEImplementation::kVulkan)
.IsAllowed(allowed_impls);
supports_angle_swiftshader =
g_driver_egl.client_ext
.b_EGL_ANGLE_platform_angle_device_type_swiftshader &&
gl::GLImplementationParts(gl::ANGLEImplementation::kSwiftShader)
.IsAllowed(allowed_impls);
supports_angle_opengl_egl =
g_driver_egl.client_ext
.b_EGL_ANGLE_platform_angle_device_type_egl_angle;
supports_angle_metal =
g_driver_egl.client_ext.b_EGL_ANGLE_platform_angle_metal &&
gl::GLImplementationParts(gl::ANGLEImplementation::kMetal)
.IsAllowed(allowed_impls);
}
*supports_angle = supports_angle_d3d || supports_angle_opengl ||
supports_angle_null || supports_angle_vulkan ||
supports_angle_swiftshader || supports_angle_metal;
base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
GetEGLInitDisplays(supports_angle_d3d, supports_angle_opengl,
supports_angle_null, supports_angle_vulkan,
supports_angle_swiftshader, supports_angle_opengl_egl,
supports_angle_metal, command_line, init_displays);
}
bool InitializeDisplay(GLDisplayEGL* display,
EGLDisplayPlatform native_display) {
if (display->GetDisplay() != nullptr) {
return true;
}
bool supports_angle = false;
std::vector<DisplayType> init_displays;
GetDisplayInitializationParams(&supports_angle, &init_displays);
return display->Initialize(supports_angle, init_displays, native_display);
}
} // namespace gl::init
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