зеркало из https://github.com/mozilla/gecko-dev.git
327 строки
9.9 KiB
Plaintext
327 строки
9.9 KiB
Plaintext
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "GLContextProvider.h"
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#include "GLContextCGL.h"
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#include "nsDebug.h"
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#include "nsIWidget.h"
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#include <OpenGL/gl.h>
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#include "gfxFailure.h"
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#include "gfxPrefs.h"
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#include "prenv.h"
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#include "GeckoProfiler.h"
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#include "mozilla/gfx/MacIOSurface.h"
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#include "mozilla/layers/CompositorOptions.h"
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#include "mozilla/widget/CompositorWidget.h"
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#include <OpenGL/OpenGL.h>
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// When running inside a VM, creating an accelerated OpenGL context usually
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// fails. Uncomment this line to emulate that behavior.
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// #define EMULATE_VM
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namespace mozilla {
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namespace gl {
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using namespace mozilla::gfx;
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using namespace mozilla::widget;
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class CGLLibrary {
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public:
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bool EnsureInitialized() {
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if (mInitialized) {
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return true;
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}
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if (!mOGLLibrary) {
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mOGLLibrary = PR_LoadLibrary("/System/Library/Frameworks/OpenGL.framework/OpenGL");
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if (!mOGLLibrary) {
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NS_WARNING("Couldn't load OpenGL Framework.");
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return false;
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}
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}
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const char* db = PR_GetEnv("MOZ_CGL_DB");
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if (db) {
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mUseDoubleBufferedWindows = *db != '0';
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}
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mInitialized = true;
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return true;
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}
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bool UseDoubleBufferedWindows() const {
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MOZ_ASSERT(mInitialized);
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return mUseDoubleBufferedWindows;
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}
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private:
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bool mInitialized = false;
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bool mUseDoubleBufferedWindows = true;
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PRLibrary* mOGLLibrary = nullptr;
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};
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CGLLibrary sCGLLibrary;
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GLContextCGL::GLContextCGL(CreateContextFlags flags, const SurfaceCaps& caps,
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NSOpenGLContext* context, bool isOffscreen)
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: GLContext(flags, caps, nullptr, isOffscreen), mContext(context) {}
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GLContextCGL::~GLContextCGL() {
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MarkDestroyed();
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if (mContext) {
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if ([NSOpenGLContext currentContext] == mContext) {
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// Clear the current context before releasing. If we don't do
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// this, the next time we call [NSOpenGLContext currentContext],
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// "invalid context" will be printed to the console.
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[NSOpenGLContext clearCurrentContext];
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}
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[mContext release];
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}
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}
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bool GLContextCGL::Init() {
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if (!InitWithPrefix("gl", true)) return false;
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return true;
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}
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CGLContextObj GLContextCGL::GetCGLContext() const {
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return static_cast<CGLContextObj>([mContext CGLContextObj]);
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}
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bool GLContextCGL::MakeCurrentImpl() const {
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if (mContext) {
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[mContext makeCurrentContext];
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MOZ_ASSERT(IsCurrentImpl());
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// Use non-blocking swap in "ASAP mode".
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// ASAP mode means that rendering is iterated as fast as possible.
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// ASAP mode is entered when layout.frame_rate=0 (requires restart).
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// If swapInt is 1, then glSwapBuffers will block and wait for a vblank signal.
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// When we're iterating as fast as possible, however, we want a non-blocking
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// glSwapBuffers, which will happen when swapInt==0.
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GLint swapInt = gfxPrefs::LayoutFrameRate() == 0 ? 0 : 1;
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[mContext setValues:&swapInt forParameter:NSOpenGLCPSwapInterval];
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}
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return true;
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}
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bool GLContextCGL::IsCurrentImpl() const { return [NSOpenGLContext currentContext] == mContext; }
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GLenum GLContextCGL::GetPreferredARGB32Format() const { return LOCAL_GL_BGRA; }
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bool GLContextCGL::SetupLookupFunction() { return false; }
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bool GLContextCGL::IsDoubleBuffered() const { return sCGLLibrary.UseDoubleBufferedWindows(); }
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bool GLContextCGL::SwapBuffers() {
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AUTO_PROFILER_LABEL("GLContextCGL::SwapBuffers", GRAPHICS);
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[mContext flushBuffer];
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return true;
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}
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void GLContextCGL::GetWSIInfo(nsCString* const out) const { out->AppendLiteral("CGL"); }
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already_AddRefed<GLContext> GLContextProviderCGL::CreateWrappingExisting(void*, void*) {
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return nullptr;
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}
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static const NSOpenGLPixelFormatAttribute kAttribs_singleBuffered[] = {
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NSOpenGLPFAAllowOfflineRenderers, 0};
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static const NSOpenGLPixelFormatAttribute kAttribs_singleBuffered_accel[] = {
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NSOpenGLPFAAccelerated, NSOpenGLPFAAllowOfflineRenderers, 0};
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static const NSOpenGLPixelFormatAttribute kAttribs_doubleBuffered[] = {
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NSOpenGLPFAAllowOfflineRenderers, NSOpenGLPFADoubleBuffer, 0};
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static const NSOpenGLPixelFormatAttribute kAttribs_doubleBuffered_accel[] = {
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NSOpenGLPFAAccelerated, NSOpenGLPFAAllowOfflineRenderers, NSOpenGLPFADoubleBuffer, 0};
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static const NSOpenGLPixelFormatAttribute kAttribs_doubleBuffered_accel_webrender[] = {
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NSOpenGLPFAAccelerated,
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NSOpenGLPFAAllowOfflineRenderers,
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NSOpenGLPFADoubleBuffer,
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NSOpenGLPFAOpenGLProfile,
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NSOpenGLProfileVersion3_2Core,
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NSOpenGLPFADepthSize,
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24,
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0};
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static NSOpenGLContext* CreateWithFormat(const NSOpenGLPixelFormatAttribute* attribs) {
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NSOpenGLPixelFormat* format = [[NSOpenGLPixelFormat alloc] initWithAttributes:attribs];
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if (!format) {
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NS_WARNING("Failed to create NSOpenGLPixelFormat.");
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return nullptr;
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}
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NSOpenGLContext* context = [[NSOpenGLContext alloc] initWithFormat:format shareContext:nullptr];
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[format release];
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return context;
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}
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already_AddRefed<GLContext> GLContextProviderCGL::CreateForCompositorWidget(
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CompositorWidget* aCompositorWidget, bool aForceAccelerated) {
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return CreateForWindow(aCompositorWidget->RealWidget(),
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aCompositorWidget->GetCompositorOptions().UseWebRender(),
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aForceAccelerated);
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}
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already_AddRefed<GLContext> GLContextProviderCGL::CreateForWindow(nsIWidget* aWidget,
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bool aWebRender,
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bool aForceAccelerated) {
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if (!sCGLLibrary.EnsureInitialized()) {
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return nullptr;
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}
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#ifdef EMULATE_VM
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if (aForceAccelerated) {
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return nullptr;
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}
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#endif
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const NSOpenGLPixelFormatAttribute* attribs;
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if (sCGLLibrary.UseDoubleBufferedWindows()) {
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if (aWebRender) {
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attribs =
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aForceAccelerated ? kAttribs_doubleBuffered_accel_webrender : kAttribs_doubleBuffered;
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} else {
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attribs = aForceAccelerated ? kAttribs_doubleBuffered_accel : kAttribs_doubleBuffered;
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}
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} else {
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attribs = aForceAccelerated ? kAttribs_singleBuffered_accel : kAttribs_singleBuffered;
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}
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NSOpenGLContext* context = CreateWithFormat(attribs);
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if (!context) {
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return nullptr;
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}
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GLint opaque = gfxPrefs::CompositorGLContextOpaque();
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[context setValues:&opaque forParameter:NSOpenGLCPSurfaceOpacity];
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RefPtr<GLContextCGL> glContext =
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new GLContextCGL(CreateContextFlags::NONE, SurfaceCaps::ForRGBA(), context, false);
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if (!glContext->Init()) {
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glContext = nullptr;
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[context release];
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return nullptr;
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}
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return glContext.forget();
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}
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static already_AddRefed<GLContextCGL> CreateOffscreenFBOContext(CreateContextFlags flags) {
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if (!sCGLLibrary.EnsureInitialized()) {
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return nullptr;
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}
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NSOpenGLContext* context = nullptr;
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std::vector<NSOpenGLPixelFormatAttribute> attribs;
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if (!gfxPrefs::GLAllowHighPower()) {
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flags &= ~CreateContextFlags::HIGH_POWER;
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}
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if (flags & CreateContextFlags::ALLOW_OFFLINE_RENDERER ||
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!(flags & CreateContextFlags::HIGH_POWER)) {
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// This is really poorly named on Apple's part, but "AllowOfflineRenderers" means
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// that we want to allow running on the iGPU instead of requiring the dGPU.
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attribs.push_back(NSOpenGLPFAAllowOfflineRenderers);
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}
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if (gfxPrefs::RequireHardwareGL()) {
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attribs.push_back(NSOpenGLPFAAccelerated);
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}
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if (!(flags & CreateContextFlags::REQUIRE_COMPAT_PROFILE)) {
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auto coreAttribs = attribs;
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coreAttribs.push_back(NSOpenGLPFAOpenGLProfile);
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coreAttribs.push_back(NSOpenGLProfileVersion3_2Core);
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coreAttribs.push_back(0);
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context = CreateWithFormat(coreAttribs.data());
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}
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if (!context) {
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attribs.push_back(0);
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context = CreateWithFormat(attribs.data());
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}
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if (!context) {
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NS_WARNING("Failed to create NSOpenGLContext.");
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return nullptr;
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}
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RefPtr<GLContextCGL> glContext = new GLContextCGL(flags, SurfaceCaps::Any(), context, true);
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if (gfxPrefs::GLMultithreaded()) {
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CGLEnable(glContext->GetCGLContext(), kCGLCEMPEngine);
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}
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return glContext.forget();
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}
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already_AddRefed<GLContext> GLContextProviderCGL::CreateHeadless(CreateContextFlags flags,
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nsACString* const out_failureId) {
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RefPtr<GLContextCGL> gl;
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gl = CreateOffscreenFBOContext(flags);
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if (!gl) {
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*out_failureId = NS_LITERAL_CSTRING("FEATURE_FAILURE_CGL_FBO");
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return nullptr;
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}
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if (!gl->Init()) {
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*out_failureId = NS_LITERAL_CSTRING("FEATURE_FAILURE_CGL_INIT");
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NS_WARNING("Failed during Init.");
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return nullptr;
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}
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return gl.forget();
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}
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already_AddRefed<GLContext> GLContextProviderCGL::CreateOffscreen(const IntSize& size,
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const SurfaceCaps& minCaps,
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CreateContextFlags flags,
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nsACString* const out_failureId) {
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RefPtr<GLContext> gl = CreateHeadless(flags, out_failureId);
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if (!gl) {
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return nullptr;
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}
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if (!gl->InitOffscreen(size, minCaps)) {
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*out_failureId = NS_LITERAL_CSTRING("FEATURE_FAILURE_CGL_INIT");
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return nullptr;
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}
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return gl.forget();
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}
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static RefPtr<GLContext> gGlobalContext;
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GLContext* GLContextProviderCGL::GetGlobalContext() {
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static bool triedToCreateContext = false;
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if (!triedToCreateContext) {
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triedToCreateContext = true;
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MOZ_RELEASE_ASSERT(!gGlobalContext);
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nsCString discardFailureId;
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RefPtr<GLContext> temp = CreateHeadless(CreateContextFlags::NONE, &discardFailureId);
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gGlobalContext = temp;
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if (!gGlobalContext) {
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NS_WARNING("Couldn't init gGlobalContext.");
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}
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}
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return gGlobalContext;
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}
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void GLContextProviderCGL::Shutdown() { gGlobalContext = nullptr; }
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} /* namespace gl */
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} /* namespace mozilla */
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