GraphicsContext3DCocoa.mm [plain text]
/*
* Copyright (C) 2009-2017 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#if ENABLE(GRAPHICS_CONTEXT_3D)
#import "GraphicsContext3D.h"
#if PLATFORM(IOS)
#import "GraphicsContext3DIOS.h"
#endif
#import "CanvasRenderingContext.h"
#import "Extensions3DOpenGL.h"
#import "GraphicsContext.h"
#import "HTMLCanvasElement.h"
#import "ImageBuffer.h"
#import "Logging.h"
#import "WebGLLayer.h"
#import "WebGLObject.h"
#import "WebGLRenderingContextBase.h"
#import <CoreGraphics/CGBitmapContext.h>
#import <sys/sysctl.h>
#import <sysexits.h>
#import <wtf/BlockObjCExceptions.h>
#import <wtf/text/CString.h>
#if PLATFORM(IOS)
#import "OpenGLESSPI.h"
#import <OpenGLES/EAGL.h>
#import <OpenGLES/EAGLDrawable.h>
#import <OpenGLES/EAGLIOSurface.h>
#import <OpenGLES/ES2/glext.h>
#import <QuartzCore/QuartzCore.h>
#else
#import <IOKit/IOKitLib.h>
#import <OpenGL/CGLRenderers.h>
#import <OpenGL/gl.h>
#endif
namespace WebCore {
static const unsigned statusCheckThreshold = 5;
#if PLATFORM(MAC)
enum {
kAGCOpen,
kAGCClose
};
static io_connect_t attachToAppleGraphicsControl()
{
mach_port_t masterPort;
if (IOMasterPort(MACH_PORT_NULL, &masterPort) != KERN_SUCCESS)
return MACH_PORT_NULL;
CFDictionaryRef classToMatch = IOServiceMatching("AppleGraphicsControl");
if (!classToMatch)
return MACH_PORT_NULL;
kern_return_t kernResult;
io_iterator_t iterator;
if ((kernResult = IOServiceGetMatchingServices(masterPort, classToMatch, &iterator)) != KERN_SUCCESS)
return MACH_PORT_NULL;
io_service_t serviceObject = IOIteratorNext(iterator);
IOObjectRelease(iterator);
if (!serviceObject)
return MACH_PORT_NULL;
io_connect_t dataPort;
IOObjectRetain(serviceObject);
kernResult = IOServiceOpen(serviceObject, mach_task_self(), 0, &dataPort);
IOObjectRelease(serviceObject);
return (kernResult == KERN_SUCCESS) ? dataPort : MACH_PORT_NULL;
}
static bool hasMuxCapability()
{
io_connect_t dataPort = attachToAppleGraphicsControl();
if (dataPort == MACH_PORT_NULL)
return false;
bool result;
if (IOConnectCallScalarMethod(dataPort, kAGCOpen, nullptr, 0, nullptr, nullptr) == KERN_SUCCESS) {
IOConnectCallScalarMethod(dataPort, kAGCClose, nullptr, 0, nullptr, nullptr);
result = true;
} else
result = false;
IOServiceClose(dataPort);
if (result) {
// This is detecting Mac hardware with an Intel g575 GPU, which
// we don't want to make available to muxing.
// Based on information from Apple's OpenGL team, such devices
// have four or fewer processors.
// <rdar://problem/30060378>
int names[2] = { CTL_HW, HW_NCPU };
int cpuCount;
size_t cpuCountLength = sizeof(cpuCount);
sysctl(names, 2, &cpuCount, &cpuCountLength, nullptr, 0);
result = cpuCount > 4;
}
return result;
}
static bool hasMuxableGPU()
{
static bool canMux = hasMuxCapability();
return canMux;
}
#endif
const unsigned MaxContexts = 16;
class GraphicsContext3DManager {
public:
GraphicsContext3DManager()
: m_disableHighPerformanceGPUTimer(*this, &GraphicsContext3DManager::disableHighPerformanceGPUTimerFired)
{
}
void addContext(GraphicsContext3D*);
void removeContext(GraphicsContext3D*);
void addContextRequiringHighPerformance(GraphicsContext3D*);
void removeContextRequiringHighPerformance(GraphicsContext3D*);
void recycleContextIfNecessary();
bool hasTooManyContexts() const { return m_contexts.size() >= MaxContexts; }
void updateAllContexts();
private:
void updateHighPerformanceState();
void disableHighPerformanceGPUTimerFired();
Vector<GraphicsContext3D*> m_contexts;
HashSet<GraphicsContext3D*> m_contextsRequiringHighPerformance;
Timer m_disableHighPerformanceGPUTimer;
#if PLATFORM(MAC)
CGLPixelFormatObj m_pixelFormatObj { nullptr };
#endif
};
static GraphicsContext3DManager& manager()
{
static NeverDestroyed<GraphicsContext3DManager> s_manager;
return s_manager;
}
#if PLATFORM(MAC)
static void displayWasReconfigured(CGDirectDisplayID, CGDisplayChangeSummaryFlags flags, void*)
{
if (flags & kCGDisplaySetModeFlag)
manager().updateAllContexts();
}
#endif
void GraphicsContext3DManager::updateAllContexts()
{
#if PLATFORM(MAC)
for (auto* context : m_contexts) {
context->updateCGLContext();
context->dispatchContextChangedNotification();
}
#endif
}
void GraphicsContext3DManager::addContext(GraphicsContext3D* context)
{
ASSERT(context);
if (!context)
return;
#if PLATFORM(MAC)
if (!m_contexts.size())
CGDisplayRegisterReconfigurationCallback(displayWasReconfigured, nullptr);
#endif
ASSERT(!m_contexts.contains(context));
m_contexts.append(context);
}
void GraphicsContext3DManager::removeContext(GraphicsContext3D* context)
{
ASSERT(m_contexts.contains(context));
m_contexts.removeFirst(context);
removeContextRequiringHighPerformance(context);
#if PLATFORM(MAC)
if (!m_contexts.size())
CGDisplayRemoveReconfigurationCallback(displayWasReconfigured, nullptr);
#endif
}
void GraphicsContext3DManager::addContextRequiringHighPerformance(GraphicsContext3D* context)
{
ASSERT(context);
if (!context)
return;
ASSERT(m_contexts.contains(context));
ASSERT(!m_contextsRequiringHighPerformance.contains(context));
LOG(WebGL, "This context (%p) requires the high-performance GPU.", context);
m_contextsRequiringHighPerformance.add(context);
updateHighPerformanceState();
}
void GraphicsContext3DManager::removeContextRequiringHighPerformance(GraphicsContext3D* context)
{
if (!m_contextsRequiringHighPerformance.contains(context))
return;
LOG(WebGL, "This context (%p) no longer requires the high-performance GPU.", context);
m_contextsRequiringHighPerformance.remove(context);
updateHighPerformanceState();
}
void GraphicsContext3DManager::updateHighPerformanceState()
{
#if PLATFORM(MAC)
if (!hasMuxableGPU())
return;
if (m_contextsRequiringHighPerformance.size()) {
if (m_disableHighPerformanceGPUTimer.isActive()) {
LOG(WebGL, "Cancel pending timer for turning off high-performance GPU.");
m_disableHighPerformanceGPUTimer.stop();
}
if (!m_pixelFormatObj) {
LOG(WebGL, "Turning on high-performance GPU.");
CGLPixelFormatAttribute attributes[] = { kCGLPFAAccelerated, kCGLPFAColorSize, static_cast<CGLPixelFormatAttribute>(32), static_cast<CGLPixelFormatAttribute>(0) };
GLint numPixelFormats = 0;
CGLChoosePixelFormat(attributes, &m_pixelFormatObj, &numPixelFormats);
}
} else if (m_pixelFormatObj) {
// Don't immediately turn off the high-performance GPU. The user might be
// swapping back and forth between tabs or windows, and we don't want to cause
// churn if we can avoid it.
if (!m_disableHighPerformanceGPUTimer.isActive()) {
LOG(WebGL, "Set a timer to turn off high-performance GPU.");
// FIXME: Expose this value as a Setting, which would require this class
// to reference a frame, page or document.
static const Seconds timeToKeepHighPerformanceGPUAlive { 10_s };
m_disableHighPerformanceGPUTimer.startOneShot(timeToKeepHighPerformanceGPUAlive);
}
}
#endif
}
void GraphicsContext3DManager::disableHighPerformanceGPUTimerFired()
{
#if PLATFORM(MAC)
if (!m_contextsRequiringHighPerformance.size() && m_pixelFormatObj) {
LOG(WebGL, "Turning off high-performance GPU.");
CGLReleasePixelFormat(m_pixelFormatObj);
m_pixelFormatObj = nullptr;
}
#endif
}
void GraphicsContext3DManager::recycleContextIfNecessary()
{
if (hasTooManyContexts()) {
LOG(WebGL, "Manager recycled context (%p).", m_contexts.at(0));
m_contexts.at(0)->recycleContext();
}
}
// FIXME: This class is currently empty on Mac, but will get populated as
// the restructuring in https://bugs.webkit.org/show_bug.cgi?id=66903 is done
class GraphicsContext3DPrivate {
public:
GraphicsContext3DPrivate(GraphicsContext3D*) { }
~GraphicsContext3DPrivate() { }
};
#if PLATFORM(MAC)
static void setPixelFormat(Vector<CGLPixelFormatAttribute>& attribs, int colorBits, int depthBits, bool accelerated, bool supersample, bool closest, bool antialias, bool useGLES3)
{
attribs.clear();
attribs.append(kCGLPFAColorSize);
attribs.append(static_cast<CGLPixelFormatAttribute>(colorBits));
attribs.append(kCGLPFADepthSize);
attribs.append(static_cast<CGLPixelFormatAttribute>(depthBits));
// This attribute, while mentioning offline renderers, is actually
// allowing us to request the integrated graphics on a dual GPU
// system, and not force the discrete GPU.
// See https://developer.apple.com/library/mac/technotes/tn2229/_index.html
if (hasMuxableGPU())
attribs.append(kCGLPFAAllowOfflineRenderers);
if (accelerated)
attribs.append(kCGLPFAAccelerated);
else {
attribs.append(kCGLPFARendererID);
attribs.append(static_cast<CGLPixelFormatAttribute>(kCGLRendererGenericFloatID));
}
if (supersample && !antialias)
attribs.append(kCGLPFASupersample);
if (closest)
attribs.append(kCGLPFAClosestPolicy);
if (antialias) {
attribs.append(kCGLPFAMultisample);
attribs.append(kCGLPFASampleBuffers);
attribs.append(static_cast<CGLPixelFormatAttribute>(1));
attribs.append(kCGLPFASamples);
attribs.append(static_cast<CGLPixelFormatAttribute>(4));
}
if (useGLES3) {
// FIXME: Instead of backing a WebGL2 GraphicsContext3D with a OpenGL 3.2 context, we should instead back it with ANGLE.
// Use an OpenGL 3.2 context for now until the ANGLE backend is ready.
attribs.append(kCGLPFAOpenGLProfile);
attribs.append(static_cast<CGLPixelFormatAttribute>(kCGLOGLPVersion_3_2_Core));
}
attribs.append(static_cast<CGLPixelFormatAttribute>(0));
}
#endif // !PLATFORM(IOS)
RefPtr<GraphicsContext3D> GraphicsContext3D::create(GraphicsContext3DAttributes attrs, HostWindow* hostWindow, GraphicsContext3D::RenderStyle renderStyle)
{
// This implementation doesn't currently support rendering directly to the HostWindow.
if (renderStyle == RenderDirectlyToHostWindow)
return nullptr;
// Make space for the incoming context if we're full.
manager().recycleContextIfNecessary();
if (manager().hasTooManyContexts())
return nullptr;
RefPtr<GraphicsContext3D> context = adoptRef(new GraphicsContext3D(attrs, hostWindow, renderStyle));
if (!context->m_contextObj)
return nullptr;
manager().addContext(context.get());
return context;
}
GraphicsContext3D::GraphicsContext3D(GraphicsContext3DAttributes attrs, HostWindow*, GraphicsContext3D::RenderStyle)
: m_attrs(attrs)
#if PLATFORM(IOS)
, m_compiler(SH_ESSL_OUTPUT)
#endif
, m_private(std::make_unique<GraphicsContext3DPrivate>(this))
{
#if PLATFORM(IOS)
EAGLRenderingAPI api = m_attrs.useGLES3 ? kEAGLRenderingAPIOpenGLES3 : kEAGLRenderingAPIOpenGLES2;
m_contextObj = [[EAGLContext alloc] initWithAPI:api];
makeContextCurrent();
#else
Vector<CGLPixelFormatAttribute> attribs;
CGLPixelFormatObj pixelFormatObj = 0;
GLint numPixelFormats = 0;
// If we're configured to demand the software renderer, we'll
// do so. We attempt to create contexts in this order:
//
// 1) 32 bit RGBA/32 bit depth/supersampled
// 2) 32 bit RGBA/32 bit depth
// 3) 32 bit RGBA/16 bit depth
//
// If we were not forced into software mode already, our final attempt is
// to try that:
//
// 4) closest to 32 bit RGBA/16 bit depth/software renderer
//
// If none of that works, we simply fail and set m_contextObj to 0.
bool useMultisampling = m_attrs.antialias;
m_powerPreferenceUsedForCreation = (hasMuxableGPU() && attrs.powerPreference == GraphicsContext3DPowerPreference::HighPerformance) ? GraphicsContext3DPowerPreference::HighPerformance : GraphicsContext3DPowerPreference::Default;
setPixelFormat(attribs, 32, 32, !attrs.forceSoftwareRenderer, true, false, useMultisampling, attrs.useGLES3);
CGLChoosePixelFormat(attribs.data(), &pixelFormatObj, &numPixelFormats);
if (!numPixelFormats) {
setPixelFormat(attribs, 32, 32, !attrs.forceSoftwareRenderer, false, false, useMultisampling, attrs.useGLES3);
CGLChoosePixelFormat(attribs.data(), &pixelFormatObj, &numPixelFormats);
if (!numPixelFormats) {
setPixelFormat(attribs, 32, 16, !attrs.forceSoftwareRenderer, false, false, useMultisampling, attrs.useGLES3);
CGLChoosePixelFormat(attribs.data(), &pixelFormatObj, &numPixelFormats);
if (!attrs.forceSoftwareRenderer && !numPixelFormats) {
setPixelFormat(attribs, 32, 16, false, false, true, false, attrs.useGLES3);
CGLChoosePixelFormat(attribs.data(), &pixelFormatObj, &numPixelFormats);
useMultisampling = false;
}
}
}
if (!numPixelFormats)
return;
CGLError err = CGLCreateContext(pixelFormatObj, 0, &m_contextObj);
GLint abortOnBlacklist = 0;
#if PLATFORM(MAC)
CGLSetParameter(m_contextObj, kCGLCPAbortOnGPURestartStatusBlacklisted, &abortOnBlacklist);
#elif PLATFORM(IOS)
CGLSetParameter(m_contextObj, kEAGLCPAbortOnGPURestartStatusBlacklisted, &abortOnBlacklist);
#endif
CGLDestroyPixelFormat(pixelFormatObj);
if (err != kCGLNoError || !m_contextObj) {
// We were unable to create the context.
m_contextObj = 0;
return;
}
m_isForWebGL2 = attrs.useGLES3;
// Set the current context to the one given to us.
CGLSetCurrentContext(m_contextObj);
#endif // !PLATFORM(IOS)
validateAttributes();
// Create the WebGLLayer
BEGIN_BLOCK_OBJC_EXCEPTIONS
m_webGLLayer = adoptNS([[WebGLLayer alloc] initWithGraphicsContext3D:this]);
#ifndef NDEBUG
[m_webGLLayer setName:@"WebGL Layer"];
#endif
END_BLOCK_OBJC_EXCEPTIONS
#if !PLATFORM(IOS)
if (useMultisampling)
::glEnable(GL_MULTISAMPLE);
#endif
// Create the texture that will be used for the framebuffer.
#if PLATFORM(IOS)
::glGenRenderbuffers(1, &m_texture);
#else
::glGenTextures(1, &m_texture);
// We bind to GL_TEXTURE_RECTANGLE_EXT rather than TEXTURE_2D because
// that's what is required for a texture backed by IOSurface.
::glBindTexture(GL_TEXTURE_RECTANGLE_EXT, m_texture);
::glTexParameteri(GL_TEXTURE_RECTANGLE_EXT, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
::glTexParameteri(GL_TEXTURE_RECTANGLE_EXT, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
::glTexParameteri(GL_TEXTURE_RECTANGLE_EXT, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
::glTexParameteri(GL_TEXTURE_RECTANGLE_EXT, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
::glBindTexture(GL_TEXTURE_RECTANGLE_EXT, 0);
#endif
// Create the framebuffer object.
::glGenFramebuffersEXT(1, &m_fbo);
::glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, m_fbo);
m_state.boundFBO = m_fbo;
if (!m_attrs.antialias && (m_attrs.stencil || m_attrs.depth))
::glGenRenderbuffersEXT(1, &m_depthStencilBuffer);
// If necessary, create another framebuffer for the multisample results.
if (m_attrs.antialias) {
::glGenFramebuffersEXT(1, &m_multisampleFBO);
::glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, m_multisampleFBO);
m_state.boundFBO = m_multisampleFBO;
::glGenRenderbuffersEXT(1, &m_multisampleColorBuffer);
if (m_attrs.stencil || m_attrs.depth)
::glGenRenderbuffersEXT(1, &m_multisampleDepthStencilBuffer);
}
// ANGLE initialization.
ShBuiltInResources ANGLEResources;
sh::InitBuiltInResources(&ANGLEResources);
getIntegerv(GraphicsContext3D::MAX_VERTEX_ATTRIBS, &ANGLEResources.MaxVertexAttribs);
getIntegerv(GraphicsContext3D::MAX_VERTEX_UNIFORM_VECTORS, &ANGLEResources.MaxVertexUniformVectors);
getIntegerv(GraphicsContext3D::MAX_VARYING_VECTORS, &ANGLEResources.MaxVaryingVectors);
getIntegerv(GraphicsContext3D::MAX_VERTEX_TEXTURE_IMAGE_UNITS, &ANGLEResources.MaxVertexTextureImageUnits);
getIntegerv(GraphicsContext3D::MAX_COMBINED_TEXTURE_IMAGE_UNITS, &ANGLEResources.MaxCombinedTextureImageUnits);
getIntegerv(GraphicsContext3D::MAX_TEXTURE_IMAGE_UNITS, &ANGLEResources.MaxTextureImageUnits);
getIntegerv(GraphicsContext3D::MAX_FRAGMENT_UNIFORM_VECTORS, &ANGLEResources.MaxFragmentUniformVectors);
// Always set to 1 for OpenGL ES.
ANGLEResources.MaxDrawBuffers = 1;
GC3Dint range[2], precision;
getShaderPrecisionFormat(GraphicsContext3D::FRAGMENT_SHADER, GraphicsContext3D::HIGH_FLOAT, range, &precision);
ANGLEResources.FragmentPrecisionHigh = (range[0] || range[1] || precision);
m_compiler.setResources(ANGLEResources);
#if !PLATFORM(IOS)
::glEnable(GL_VERTEX_PROGRAM_POINT_SIZE);
if (!isGLES2Compliant())
::glEnable(GL_POINT_SPRITE);
#endif
::glClearColor(0, 0, 0, 0);
LOG(WebGL, "Created a GraphicsContext3D (%p).", this);
}
GraphicsContext3D::~GraphicsContext3D()
{
manager().removeContext(this);
if (m_contextObj) {
#if PLATFORM(IOS)
makeContextCurrent();
[m_contextObj renderbufferStorage:GL_RENDERBUFFER fromDrawable:nil];
::glDeleteRenderbuffers(1, &m_texture);
#else
CGLSetCurrentContext(m_contextObj);
::glDeleteTextures(1, &m_texture);
#endif
if (m_attrs.antialias) {
::glDeleteRenderbuffersEXT(1, &m_multisampleColorBuffer);
if (m_attrs.stencil || m_attrs.depth)
::glDeleteRenderbuffersEXT(1, &m_multisampleDepthStencilBuffer);
::glDeleteFramebuffersEXT(1, &m_multisampleFBO);
} else {
if (m_attrs.stencil || m_attrs.depth)
::glDeleteRenderbuffersEXT(1, &m_depthStencilBuffer);
}
::glDeleteFramebuffersEXT(1, &m_fbo);
#if PLATFORM(IOS)
[EAGLContext setCurrentContext:0];
[static_cast<EAGLContext*>(m_contextObj) release];
#else
CGLSetCurrentContext(0);
CGLDestroyContext(m_contextObj);
#endif
[m_webGLLayer setContext:nullptr];
}
LOG(WebGL, "Destroyed a GraphicsContext3D (%p).", this);
}
#if PLATFORM(IOS)
void GraphicsContext3D::setRenderbufferStorageFromDrawable(GC3Dsizei width, GC3Dsizei height)
{
// We need to make a call to setBounds below to update the backing store size but we also
// do not want to clobber the bounds set during layout.
CGRect previousBounds = [m_webGLLayer.get() bounds];
[m_webGLLayer setBounds:CGRectMake(0, 0, width, height)];
[m_webGLLayer setOpaque:(m_internalColorFormat != GL_RGBA8)];
[m_contextObj renderbufferStorage:GL_RENDERBUFFER fromDrawable:static_cast<id<EAGLDrawable>>(m_webGLLayer.get())];
[m_webGLLayer setBounds:previousBounds];
}
#endif
bool GraphicsContext3D::makeContextCurrent()
{
if (!m_contextObj)
return false;
#if PLATFORM(IOS)
if ([EAGLContext currentContext] != m_contextObj)
return [EAGLContext setCurrentContext:static_cast<EAGLContext*>(m_contextObj)];
#else
CGLContextObj currentContext = CGLGetCurrentContext();
if (currentContext != m_contextObj)
return CGLSetCurrentContext(m_contextObj) == kCGLNoError;
#endif
return true;
}
void GraphicsContext3D::checkGPUStatus()
{
if (m_failNextStatusCheck) {
LOG(WebGL, "Pretending the GPU has reset (%p). Lose the context.", this);
m_failNextStatusCheck = false;
forceContextLost();
#if PLATFORM(MAC)
CGLSetCurrentContext(0);
#else
[EAGLContext setCurrentContext:0];
#endif
return;
}
// Only do the check every statusCheckThreshold calls.
if (m_statusCheckCount)
return;
m_statusCheckCount = (m_statusCheckCount + 1) % statusCheckThreshold;
GLint restartStatus = 0;
#if PLATFORM(MAC)
CGLGetParameter(platformGraphicsContext3D(), kCGLCPGPURestartStatus, &restartStatus);
if (restartStatus == kCGLCPGPURestartStatusBlacklisted) {
LOG(WebGL, "The GPU has blacklisted us (%p). Terminating.", this);
exit(EX_OSERR);
}
if (restartStatus == kCGLCPGPURestartStatusCaused) {
LOG(WebGL, "The GPU has reset us (%p). Lose the context.", this);
forceContextLost();
CGLSetCurrentContext(0);
}
#else
EAGLContext* currentContext = static_cast<EAGLContext*>(PlatformGraphicsContext3D());
[currentContext getParameter:kEAGLCPGPURestartStatus to:&restartStatus];
if (restartStatus == kEAGLCPGPURestartStatusCaused || restartStatus == kEAGLCPGPURestartStatusBlacklisted) {
LOG(WebGL, "The GPU has either reset or blacklisted us (%p). Lose the context.", this);
forceContextLost();
[EAGLContext setCurrentContext:0];
}
#endif
}
#if PLATFORM(IOS)
void GraphicsContext3D::presentRenderbuffer()
{
makeContextCurrent();
if (m_attrs.antialias)
resolveMultisamplingIfNecessary();
::glFlush();
::glBindRenderbuffer(GL_RENDERBUFFER, m_texture);
[static_cast<EAGLContext*>(m_contextObj) presentRenderbuffer:GL_RENDERBUFFER];
[EAGLContext setCurrentContext:nil];
}
#endif
bool GraphicsContext3D::texImageIOSurface2D(GC3Denum target, GC3Denum internalFormat, GC3Dsizei width, GC3Dsizei height, GC3Denum format, GC3Denum type, IOSurfaceRef surface, GC3Duint plane)
{
#if PLATFORM(MAC)
return kCGLNoError == CGLTexImageIOSurface2D(platformGraphicsContext3D(), target, internalFormat, width, height, format, type, surface, plane);
#elif PLATFORM(IOS) && !PLATFORM(IOS_SIMULATOR)
return [platformGraphicsContext3D() texImageIOSurface:surface target:target internalFormat:internalFormat width:width height:height format:format type:type plane:plane];
#else
UNUSED_PARAM(target);
UNUSED_PARAM(internalFormat);
UNUSED_PARAM(width);
UNUSED_PARAM(height);
UNUSED_PARAM(format);
UNUSED_PARAM(type);
UNUSED_PARAM(surface);
UNUSED_PARAM(plane);
return false;
#endif
}
#if PLATFORM(MAC)
void GraphicsContext3D::allocateIOSurfaceBackingStore(IntSize size)
{
LOG(WebGL, "GraphicsContext3D::allocateIOSurfaceBackingStore at %d x %d. (%p)", size.width(), size.height(), this);
[m_webGLLayer allocateIOSurfaceBackingStoreWithSize:size usingAlpha:m_attrs.alpha];
}
void GraphicsContext3D::updateFramebufferTextureBackingStoreFromLayer()
{
LOG(WebGL, "GraphicsContext3D::updateFramebufferTextureBackingStoreFromLayer(). (%p)", this);
[m_webGLLayer bindFramebufferToNextAvailableSurface];
}
void GraphicsContext3D::updateCGLContext()
{
if (!m_contextObj)
return;
LOG(WebGL, "Detected a mux switch or display reconfiguration. Call CGLUpdateContext. (%p)", this);
makeContextCurrent();
CGLUpdateContext(m_contextObj);
}
void GraphicsContext3D::setContextVisibility(bool isVisible)
{
if (m_powerPreferenceUsedForCreation == GraphicsContext3DPowerPreference::HighPerformance) {
if (isVisible)
manager().addContextRequiringHighPerformance(this);
else
manager().removeContextRequiringHighPerformance(this);
}
}
#endif
bool GraphicsContext3D::isGLES2Compliant() const
{
return m_isForWebGL2;
}
void GraphicsContext3D::setContextLostCallback(std::unique_ptr<ContextLostCallback>)
{
}
void GraphicsContext3D::setErrorMessageCallback(std::unique_ptr<ErrorMessageCallback>)
{
}
void GraphicsContext3D::simulateContextChanged()
{
manager().updateAllContexts();
}
}
#endif // ENABLE(GRAPHICS_CONTEXT_3D)