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// Copyright 2018 The Cobalt Authors. All Rights Reserved.
//
// 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.
#include "starboard/testing/fake_graphics_context_provider.h"
#include "starboard/common/condition_variable.h"
#include "starboard/common/mutex.h"
#if defined(ADDRESS_SANITIZER)
// By default, Leak Sanitizer and Address Sanitizer is expected to exist
// together. However, this is not true for all platforms.
// HAS_LEAK_SANTIZIER=0 explicitly removes the Leak Sanitizer from code.
#ifndef HAS_LEAK_SANITIZER
#define HAS_LEAK_SANITIZER 1
#endif // HAS_LEAK_SANITIZER
#endif // defined(ADDRESS_SANITIZER)
#if HAS_LEAK_SANITIZER
#include <sanitizer/lsan_interface.h>
#endif // HAS_LEAK_SANITIZER
#include "starboard/configuration.h"
#include "starboard/memory.h"
#define EGL_CALL_PREFIX SbGetEglInterface()->
#define EGLConfig SbEglConfig
#define EGLint SbEglInt32
#define EGLNativeWindowType SbEglNativeWindowType
#define EGL_ALPHA_SIZE SB_EGL_ALPHA_SIZE
#define EGL_BLUE_SIZE SB_EGL_BLUE_SIZE
#define EGL_CONTEXT_CLIENT_VERSION SB_EGL_CONTEXT_CLIENT_VERSION
#define EGL_DEFAULT_DISPLAY SB_EGL_DEFAULT_DISPLAY
#define EGL_GREEN_SIZE SB_EGL_GREEN_SIZE
#define EGL_NONE SB_EGL_NONE
#define EGL_NO_CONTEXT SB_EGL_NO_CONTEXT
#define EGL_NO_DISPLAY SB_EGL_NO_DISPLAY
#define EGL_NO_SURFACE SB_EGL_NO_SURFACE
#define EGL_OPENGL_ES2_BIT SB_EGL_OPENGL_ES2_BIT
#define EGL_PBUFFER_BIT SB_EGL_PBUFFER_BIT
#define EGL_RED_SIZE SB_EGL_RED_SIZE
#define EGL_RENDERABLE_TYPE SB_EGL_RENDERABLE_TYPE
#define EGL_SUCCESS SB_EGL_SUCCESS
#define EGL_SURFACE_TYPE SB_EGL_SURFACE_TYPE
#define EGL_WINDOW_BIT SB_EGL_WINDOW_BIT
#define EGL_CALL(x) \
do { \
EGL_CALL_PREFIX x; \
SB_DCHECK(EGL_CALL_PREFIX eglGetError() == EGL_SUCCESS); \
} while (false)
#define EGL_CALL_SIMPLE(x) (EGL_CALL_PREFIX x)
namespace starboard {
namespace testing {
namespace {
#if SB_HAS(GLES2)
EGLint const kAttributeList[] = {EGL_RED_SIZE,
8,
EGL_GREEN_SIZE,
8,
EGL_BLUE_SIZE,
8,
EGL_ALPHA_SIZE,
8,
EGL_SURFACE_TYPE,
EGL_WINDOW_BIT | EGL_PBUFFER_BIT,
EGL_RENDERABLE_TYPE,
EGL_OPENGL_ES2_BIT,
EGL_NONE};
#endif // SB_HAS(GLES2)
} // namespace
FakeGraphicsContextProvider::FakeGraphicsContextProvider()
:
#if SB_HAS(GLES2)
display_(EGL_NO_DISPLAY),
surface_(EGL_NO_SURFACE),
context_(EGL_NO_CONTEXT),
#endif // SB_HAS(GLES2)
window_(kSbWindowInvalid) {
InitializeWindow();
#if SB_HAS(GLES2)
InitializeEGL();
#endif
}
FakeGraphicsContextProvider::~FakeGraphicsContextProvider() {
#if SB_HAS(GLES2)
functor_queue_.Put(
std::bind(&FakeGraphicsContextProvider::DestroyContext, this));
functor_queue_.Wake();
SbThreadJoin(decode_target_context_thread_, NULL);
EGL_CALL(eglDestroySurface(display_, surface_));
EGL_CALL(eglTerminate(display_));
#endif // SB_HAS(GLES2)
SbWindowDestroy(window_);
}
#if SB_HAS(GLES2)
void FakeGraphicsContextProvider::RunOnGlesContextThread(
const std::function<void()>& functor) {
if (SbThreadIsCurrent(decode_target_context_thread_)) {
functor();
return;
}
Mutex mutex;
ConditionVariable condition_variable(mutex);
ScopedLock scoped_lock(mutex);
functor_queue_.Put(functor);
functor_queue_.Put([&]() {
ScopedLock scoped_lock(mutex);
condition_variable.Signal();
});
condition_variable.Wait();
}
void FakeGraphicsContextProvider::ReleaseDecodeTarget(
SbDecodeTarget decode_target) {
if (SbThreadIsCurrent(decode_target_context_thread_)) {
SbDecodeTargetRelease(decode_target);
return;
}
Mutex mutex;
ConditionVariable condition_variable(mutex);
ScopedLock scoped_lock(mutex);
functor_queue_.Put(std::bind(SbDecodeTargetRelease, decode_target));
functor_queue_.Put([&]() {
ScopedLock scoped_lock(mutex);
condition_variable.Signal();
});
condition_variable.Wait();
}
// static
void* FakeGraphicsContextProvider::ThreadEntryPoint(void* context) {
auto provider = static_cast<FakeGraphicsContextProvider*>(context);
provider->RunLoop();
return NULL;
}
void FakeGraphicsContextProvider::RunLoop() {
while (std::function<void()> functor = functor_queue_.Get()) {
if (!functor) {
break;
}
functor();
}
}
#endif // SB_HAS(GLES2)
void FakeGraphicsContextProvider::InitializeWindow() {
SbWindowOptions window_options;
SbWindowSetDefaultOptions(&window_options);
window_ = SbWindowCreate(&window_options);
SB_CHECK(SbWindowIsValid(window_));
}
#if SB_HAS(GLES2)
void FakeGraphicsContextProvider::InitializeEGL() {
display_ = EGL_CALL_SIMPLE(eglGetDisplay(EGL_DEFAULT_DISPLAY));
SB_DCHECK(EGL_SUCCESS == EGL_CALL_SIMPLE(eglGetError()));
SB_CHECK(EGL_NO_DISPLAY != display_);
#if HAS_LEAK_SANITIZER
__lsan_disable();
#endif // HAS_LEAK_SANITIZER
EGL_CALL_SIMPLE(eglInitialize(display_, NULL, NULL));
#if HAS_LEAK_SANITIZER
__lsan_enable();
#endif // HAS_LEAK_SANITIZER
SB_DCHECK(EGL_SUCCESS == EGL_CALL_SIMPLE(eglGetError()));
// Some EGL drivers can return a first config that doesn't allow
// eglCreateWindowSurface(), with no differences in EGLConfig attribute values
// from configs that do allow that. To handle that, we have to attempt
// eglCreateWindowSurface() until we find a config that succeeds.
// First, query how many configs match the given attribute list.
EGLint num_configs = 0;
EGL_CALL(eglChooseConfig(display_, kAttributeList, NULL, 0, &num_configs));
SB_CHECK(0 != num_configs);
// Allocate space to receive the matching configs and retrieve them.
EGLConfig* configs = reinterpret_cast<EGLConfig*>(
SbMemoryAllocate(num_configs * sizeof(EGLConfig)));
EGL_CALL(eglChooseConfig(display_, kAttributeList, configs, num_configs,
&num_configs));
EGLNativeWindowType native_window =
(EGLNativeWindowType)SbWindowGetPlatformHandle(window_);
EGLConfig config = EGLConfig();
// Find the first config that successfully allow a window surface to be
// created.
for (int config_number = 0; config_number < num_configs; ++config_number) {
config = configs[config_number];
surface_ = EGL_CALL_SIMPLE(
eglCreateWindowSurface(display_, config, native_window, NULL));
if (EGL_SUCCESS == EGL_CALL_SIMPLE(eglGetError()))
break;
}
SB_DCHECK(surface_ != EGL_NO_SURFACE);
SbMemoryDeallocate(configs);
// Create the GLES2 or GLEX3 Context.
EGLint context_attrib_list[] = {
EGL_CONTEXT_CLIENT_VERSION, 3, EGL_NONE,
};
if (context_ == EGL_NO_CONTEXT) {
// Create an OpenGL ES 2.0 context.
context_attrib_list[1] = 2;
context_ = EGL_CALL_SIMPLE(eglCreateContext(
display_, config, EGL_NO_CONTEXT, context_attrib_list));
}
SB_CHECK(EGL_SUCCESS == EGL_CALL_SIMPLE(eglGetError()));
SB_CHECK(context_ != EGL_NO_CONTEXT);
MakeContextCurrent();
decoder_target_provider_.egl_display = display_;
decoder_target_provider_.egl_context = context_;
decoder_target_provider_.gles_context_runner = DecodeTargetGlesContextRunner;
decoder_target_provider_.gles_context_runner_context = this;
decode_target_context_thread_ = SbThreadCreate(
0, kSbThreadPriorityNormal, kSbThreadNoAffinity, true, "dt_context",
&FakeGraphicsContextProvider::ThreadEntryPoint, this);
MakeNoContextCurrent();
functor_queue_.Put(
std::bind(&FakeGraphicsContextProvider::MakeContextCurrent, this));
}
void FakeGraphicsContextProvider::OnDecodeTargetGlesContextRunner(
SbDecodeTargetGlesContextRunnerTarget target_function,
void* target_function_context) {
if (SbThreadIsCurrent(decode_target_context_thread_)) {
target_function(target_function_context);
return;
}
Mutex mutex;
ConditionVariable condition_variable(mutex);
ScopedLock scoped_lock(mutex);
functor_queue_.Put(std::bind(target_function, target_function_context));
functor_queue_.Put([&]() {
ScopedLock scoped_lock(mutex);
condition_variable.Signal();
});
condition_variable.Wait();
}
void FakeGraphicsContextProvider::MakeContextCurrent() {
SB_CHECK(EGL_NO_DISPLAY != display_);
EGL_CALL_SIMPLE(eglMakeCurrent(display_, surface_, surface_, context_));
EGLint error = EGL_CALL_SIMPLE(eglGetError());
SB_CHECK(EGL_SUCCESS == error) << " eglGetError " << error;
}
void FakeGraphicsContextProvider::MakeNoContextCurrent() {
EGL_CALL(
eglMakeCurrent(display_, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT));
}
void FakeGraphicsContextProvider::DestroyContext() {
MakeNoContextCurrent();
EGL_CALL_SIMPLE(eglDestroyContext(display_, context_));
EGLint error = EGL_CALL_SIMPLE(eglGetError());
SB_CHECK(EGL_SUCCESS == error) << " eglGetError " << error;
}
// static
void FakeGraphicsContextProvider::DecodeTargetGlesContextRunner(
SbDecodeTargetGraphicsContextProvider* graphics_context_provider,
SbDecodeTargetGlesContextRunnerTarget target_function,
void* target_function_context) {
FakeGraphicsContextProvider* provider =
static_cast<FakeGraphicsContextProvider*>(
graphics_context_provider->gles_context_runner_context);
provider->OnDecodeTargetGlesContextRunner(target_function,
target_function_context);
}
#endif // SB_HAS(GLES2)
} // namespace testing
} // namespace starboard