//----------------------------------------------------------------------------//
void OpenGLApplePBTextureTarget::declareRenderSize(const Size& sz)
{
// exit if current size is enough
if ((d_area.getWidth() >= sz.d_width) &&
(d_area.getHeight() >= sz.d_height))
return;
setArea(Rect(d_area.getPosition(), d_owner.getAdjustedTextureSize(sz)));
// dump any previous pbuffer
if (d_pbuffer)
{
CGLDestroyPBuffer(d_pbuffer);
d_pbuffer = 0;
}
CGLError err;
if (err = CGLCreatePBuffer(d_area.getWidth(), d_area.getHeight(),
GL_TEXTURE_2D, GL_RGBA, 0, &d_pbuffer))
{
CEGUI_THROW(RendererException(
"OpenGLApplePBTextureTarget::declareRenderSize "
"- CGLCreatePBuffer failed: " + String(CGLErrorString(err))));
}
if (err = CGLSetPBuffer(d_context, d_pbuffer, 0, 0, d_screen))
CEGUI_THROW(RendererException(
"OpenGLApplePBTextureTarget::declareRenderSize "
"- CGLSetPBuffer failed: " + String(CGLErrorString(err))));
clear();
// make d_texture use the pbuffer as it's data source
// save old texture binding
GLuint old_tex;
glGetIntegerv(GL_TEXTURE_BINDING_2D, reinterpret_cast<GLint*>(&old_tex));
glBindTexture(GL_TEXTURE_2D, d_texture);
err = CGLTexImagePBuffer(CGLGetCurrentContext(), d_pbuffer, GL_FRONT);
// restore previous texture binding.
glBindTexture(GL_TEXTURE_2D, old_tex);
if (err)
CEGUI_THROW(RendererException(
"OpenGLApplePBTextureTarget::declareRenderSize "
"- CGLTexImagePBuffer failed: " + String(CGLErrorString(err))));
// ensure CEGUI::Texture is wrapping real GL texture and has correct size
d_CEGUITexture->setOpenGLTexture(d_texture, d_area.getSize());
}
HeadlessDisplay::HeadlessDisplay() {
#if MBGL_USE_CGL
// TODO: test if OpenGL 4.1 with GL_ARB_ES2_compatibility is supported
// If it is, use kCGLOGLPVersion_3_2_Core and enable that extension.
CGLPixelFormatAttribute attributes[] = {
kCGLPFAOpenGLProfile,
static_cast<CGLPixelFormatAttribute>(kCGLOGLPVersion_Legacy),
kCGLPFAAccelerated,
static_cast<CGLPixelFormatAttribute>(0)
};
GLint num;
CGLError error = CGLChoosePixelFormat(attributes, &pixelFormat, &num);
if (error != kCGLNoError) {
throw std::runtime_error(std::string("Error choosing pixel format:") + CGLErrorString(error) + "\n");
return;
}
if (num <= 0) {
throw std::runtime_error("No pixel formats found.");
return;
}
#endif
#if MBGL_USE_GLX
if (!XInitThreads()) {
throw std::runtime_error("Failed to XInitThreads.");
}
xDisplay = XOpenDisplay(nullptr);
if (xDisplay == nullptr) {
throw std::runtime_error("Failed to open X display.");
}
const char *extensions = reinterpret_cast<const char *>(glXQueryServerString(xDisplay, DefaultScreen(xDisplay), GLX_EXTENSIONS));
if (!extensions) {
throw std::runtime_error("Cannot read GLX extensions.");
}
if (!strstr(extensions,"GLX_SGIX_fbconfig")) {
throw std::runtime_error("Extension GLX_SGIX_fbconfig was not found.");
}
if (!strstr(extensions, "GLX_SGIX_pbuffer")) {
throw std::runtime_error("Cannot find glXCreateContextAttribsARB.");
}
// We're creating a dummy pbuffer anyway that we're not using.
static int pixelFormat[] = {
GLX_DRAWABLE_TYPE, GLX_PBUFFER_BIT,
None
};
int configs = 0;
fbConfigs = glXChooseFBConfig(xDisplay, DefaultScreen(xDisplay), pixelFormat, &configs);
if (fbConfigs == nullptr) {
throw std::runtime_error("Failed to glXChooseFBConfig.");
}
if (configs <= 0) {
throw std::runtime_error("No Framebuffer configurations.");
}
#endif
}
void HeadlessView::activate() {
if (thread != std::thread::id()) {
throw std::runtime_error("OpenGL context was already current");
}
thread = std::this_thread::get_id();
if (!glContext) {
createContext();
}
#if MBGL_USE_CGL
CGLError error = CGLSetCurrentContext(glContext);
if (error != kCGLNoError) {
throw std::runtime_error(std::string("Switching OpenGL context failed:") + CGLErrorString(error) + "\n");
}
#endif
#if MBGL_USE_GLX
if (!glXMakeContextCurrent(xDisplay, glxPbuffer, glxPbuffer, glContext)) {
throw std::runtime_error("Switching OpenGL context failed.\n");
}
#endif
loadExtensions();
}
void activateContext() final {
CGLError error = CGLSetCurrentContext(glContext);
if (error != kCGLNoError) {
throw std::runtime_error(std::string("Switching OpenGL context failed:") +
CGLErrorString(error) + "\n");
}
}
void deactivateContext() final {
CGLError error = CGLSetCurrentContext(nullptr);
if (error != kCGLNoError) {
throw std::runtime_error(std::string("Removing OpenGL context failed:") +
CGLErrorString(error) + "\n");
}
}
static bool create_gl_context(struct MPGLContext *ctx)
{
struct cgl_context *p = ctx->priv;
CGLError err;
CGLOpenGLProfile gl_versions[] = {
kCGLOGLPVersion_3_2_Core,
kCGLOGLPVersion_Legacy,
};
for (int n = 0; n < MP_ARRAY_SIZE(gl_versions); n++) {
err = test_gl_version(ctx->vo, &p->ctx, &p->pix, gl_versions[n]);
if (err == kCGLNoError)
break;
}
if (err != kCGLNoError) {
MP_FATAL(ctx->vo, "error creating CGL context: %s (%d)\n",
CGLErrorString(err), err);
return false;
}
vo_cocoa_set_opengl_ctx(ctx->vo, p->ctx);
CGLSetCurrentContext(p->ctx);
ctx->depth_r = ctx->depth_g = ctx->depth_b = cgl_color_size(ctx);
mpgl_load_functions(ctx->gl, (void *)cocoa_glgetaddr, NULL, ctx->vo->log);
CGLReleasePixelFormat(p->pix);
return true;
}
int main() {
#if USE_GLX
XInitThreads();
#endif
// TODO: test if OpenGL 4.1 with GL_ARB_ES2_compatibility is supported
// If it is, use kCGLOGLPVersion_3_2_Core and enable that extension.
CGLPixelFormatAttribute attributes[] = {
kCGLPFAOpenGLProfile,
(CGLPixelFormatAttribute) kCGLOGLPVersion_Legacy,
kCGLPFAAccelerated,
(CGLPixelFormatAttribute) 0
};
GLint num;
CGLError error = CGLChoosePixelFormat(attributes, &pixelFormat, &num);
if (error) {
fprintf(stderr, "Error pixel format: %s\n", CGLErrorString(error));
return error;
}
while (true) {
std::thread t1(readPixels);
std::thread t2(readPixels);
std::thread t3(readPixels);
t1.join();
t2.join();
t3.join();
}
return 0;
}
void COffscreenGLContext::WorkerThreadFree()
{
CGLError err = CGLSetCurrentContext(NULL);
if (kCGLNoError != err) {
LOG_L(L_ERROR, CGLErrorString(err));
throw opengl_error("Could not deactivate worker rendering context");
}
}
void HeadlessBackend::createContext() {
assert(!hasContext());
CGLContextObj glContext = nullptr;
CGLError error = CGLCreateContext(display->attribute<CGLPixelFormatObj>(), nullptr, &glContext);
if (error != kCGLNoError) {
throw std::runtime_error(std::string("Error creating GL context object:") +
CGLErrorString(error) + "\n");
}
error = CGLEnable(glContext, kCGLCEMPEngine);
if (error != kCGLNoError) {
throw std::runtime_error(std::string("Error enabling OpenGL multithreading:") +
CGLErrorString(error) + "\n");
}
impl.reset(new CGLImpl(glContext));
}
gl_context_t makeSharedGLContext(gl_context_t shareWith, char const **outError)
{
CGLContextObj shareContext = (CGLContextObj)shareWith;
CGLPixelFormatObj pixelFormat = CGLGetPixelFormat(shareContext);
CGLContextObj newContext;
CGLError code = CGLCreateContext(pixelFormat, shareContext, &newContext);
if (code != kCGLNoError) {
*outError = CGLErrorString(code);
return 0;
} else
return (gl_context_t)newContext;
}
bool VdaMixer::upload(const VideoFrame &frame, bool /*deint*/) {
Q_ASSERT(frame.format().imgfmt() == IMGFMT_VDA);
CGLError error = kCGLNoError;
for (auto &texture : m_textures) {
const auto cgl = CGLGetCurrentContext();
const auto surface = CVPixelBufferGetIOSurface((CVPixelBufferRef)frame.data(3));
texture.bind();
const auto w = IOSurfaceGetWidthOfPlane(surface, texture.plane());
const auto h = IOSurfaceGetHeightOfPlane(surface, texture.plane());
if (_Change(error, CGLTexImageIOSurface2D(cgl, texture.target(), texture.format(), w, h, texture.transfer().format, texture.transfer().type, surface, texture.plane()))) {
_Error("CGLError: %%(0x%%)", CGLErrorString(error), _N(error, 16));
return false;
}
}
return true;
}
void HeadlessView::createContext() {
if (!display) {
throw std::runtime_error("Display is not set");
}
#if MBGL_USE_CGL
CGLError error = CGLCreateContext(display->pixelFormat, NULL, &glContext);
if (error != kCGLNoError) {
throw std::runtime_error(std::string("Error creating GL context object:") + CGLErrorString(error) + "\n");
}
error = CGLEnable(glContext, kCGLCEMPEngine);
if (error != kCGLNoError) {
throw std::runtime_error(std::string("Error enabling OpenGL multithreading:") + CGLErrorString(error) + "\n");
}
#endif
#if MBGL_USE_GLX
xDisplay = display->xDisplay;
fbConfigs = display->fbConfigs;
if (!glContext) {
// Try to create a legacy context
glContext = glXCreateNewContext(xDisplay, fbConfigs[0], GLX_RGBA_TYPE, None, True);
if (glContext) {
if (!glXIsDirect(xDisplay, glContext)) {
Log::Error(Event::OpenGL, "failed to create direct OpenGL Legacy context");
glXDestroyContext(xDisplay, glContext);
glContext = 0;
}
}
}
if (glContext == 0) {
throw std::runtime_error("Error creating GL context object.");
}
// Create a dummy pbuffer. We will render to framebuffers anyway, but we need a pbuffer to
// activate the context.
int pbufferAttributes[] = {
GLX_PBUFFER_WIDTH, 8,
GLX_PBUFFER_HEIGHT, 8,
None
};
glxPbuffer = glXCreatePbuffer(xDisplay, fbConfigs[0], pbufferAttributes);
#endif
}
void HeadlessView::deactivate() {
if (thread == std::thread::id()) {
throw std::runtime_error("OpenGL context was not current");
}
thread = std::thread::id();
#if MBGL_USE_CGL
CGLError error = CGLSetCurrentContext(nullptr);
if (error != kCGLNoError) {
throw std::runtime_error(std::string("Removing OpenGL context failed:") + CGLErrorString(error) + "\n");
}
#endif
#if MBGL_USE_GLX
if (!glXMakeContextCurrent(xDisplay, 0, 0, nullptr)) {
throw std::runtime_error("Removing OpenGL context failed.\n");
}
#endif
}
static CGLError test_gl_version(struct vo *vo,
CGLContextObj *ctx,
CGLPixelFormatObj *pix,
CGLOpenGLProfile version)
{
CGLPixelFormatAttribute attrs[] = {
kCGLPFAOpenGLProfile,
(CGLPixelFormatAttribute) version,
kCGLPFADoubleBuffer,
kCGLPFAAccelerated,
#if MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_8
// leave this as the last entry of the array to not break the fallback
// code
kCGLPFASupportsAutomaticGraphicsSwitching,
#endif
0
};
GLint npix;
CGLError err;
err = CGLChoosePixelFormat(attrs, pix, &npix);
if (err == kCGLBadAttribute) {
// kCGLPFASupportsAutomaticGraphicsSwitching is probably not supported
// by the current hardware. Falling back to not using it.
attrs[MP_ARRAY_SIZE(attrs) - 2] = 0;
err = CGLChoosePixelFormat(attrs, pix, &npix);
}
if (err != kCGLNoError) {
MP_ERR(vo, "error creating CGL pixel format: %s (%d)\n",
CGLErrorString(err), err);
goto error_out;
}
err = CGLCreateContext(*pix, 0, ctx);
error_out:
return err;
}
static int create(struct gl_hwdec *hw)
{
if (!check_hwdec(hw))
return -1;
struct priv *p = talloc_zero(hw, struct priv);
hw->priv = p;
hw->gl->GenTextures(MP_MAX_PLANES, p->gl_planes);
p->hwctx = (struct mp_hwdec_ctx){
.type = HWDEC_VIDEOTOOLBOX,
.download_image = mp_vt_download_image,
.ctx = &p->hwctx,
};
hwdec_devices_add(hw->devs, &p->hwctx);
return 0;
}
static int reinit(struct gl_hwdec *hw, struct mp_image_params *params)
{
struct priv *p = hw->priv;
assert(params->imgfmt == hw->driver->imgfmt);
if (!params->hw_subfmt) {
MP_ERR(hw, "Unsupported CVPixelBuffer format.\n");
return -1;
}
if (!gl_get_imgfmt_desc(hw->gl, params->hw_subfmt, &p->desc)) {
MP_ERR(hw, "Unsupported texture format.\n");
return -1;
}
params->imgfmt = params->hw_subfmt;
params->hw_subfmt = 0;
return 0;
}
static int map_frame(struct gl_hwdec *hw, struct mp_image *hw_image,
struct gl_hwdec_frame *out_frame)
{
struct priv *p = hw->priv;
GL *gl = hw->gl;
CVPixelBufferRelease(p->pbuf);
p->pbuf = (CVPixelBufferRef)hw_image->planes[3];
CVPixelBufferRetain(p->pbuf);
IOSurfaceRef surface = CVPixelBufferGetIOSurface(p->pbuf);
if (!surface) {
MP_ERR(hw, "CVPixelBuffer has no IOSurface\n");
return -1;
}
const bool planar = CVPixelBufferIsPlanar(p->pbuf);
const int planes = CVPixelBufferGetPlaneCount(p->pbuf);
assert((planar && planes == p->desc.num_planes) || p->desc.num_planes == 1);
GLenum gl_target = GL_TEXTURE_RECTANGLE;
for (int i = 0; i < p->desc.num_planes; i++) {
const struct gl_format *fmt = p->desc.planes[i];
gl->BindTexture(gl_target, p->gl_planes[i]);
CGLError err = CGLTexImageIOSurface2D(
CGLGetCurrentContext(), gl_target,
fmt->internal_format,
IOSurfaceGetWidthOfPlane(surface, i),
IOSurfaceGetHeightOfPlane(surface, i),
fmt->format, fmt->type, surface, i);
if (err != kCGLNoError)
MP_ERR(hw, "error creating IOSurface texture for plane %d: %s (%x)\n",
i, CGLErrorString(err), gl->GetError());
gl->BindTexture(gl_target, 0);
out_frame->planes[i] = (struct gl_hwdec_plane){
.gl_texture = p->gl_planes[i],
.gl_target = gl_target,
.tex_w = IOSurfaceGetWidthOfPlane(surface, i),
.tex_h = IOSurfaceGetHeightOfPlane(surface, i),
};
}
snprintf(out_frame->swizzle, sizeof(out_frame->swizzle), "%s",
p->desc.swizzle);
return 0;
}
static void destroy(struct gl_hwdec *hw)
{
struct priv *p = hw->priv;
GL *gl = hw->gl;
CVPixelBufferRelease(p->pbuf);
gl->DeleteTextures(MP_MAX_PLANES, p->gl_planes);
hwdec_devices_remove(hw->devs, &p->hwctx);
}
const struct gl_hwdec_driver gl_hwdec_videotoolbox = {
.name = "videotoolbox",
.api = HWDEC_VIDEOTOOLBOX,
.imgfmt = IMGFMT_VIDEOTOOLBOX,
.create = create,
.reinit = reinit,
.map_frame = map_frame,
.destroy = destroy,
};
/*
PsychOSOpenOnscreenWindow()
Creates the CGL pixel format and the CGL context objects and then instantiates the context onto the screen.
-The pixel format and the context are stored in the target specific field of the window recored. Close
should clean up by destroying both the pixel format and the context.
-We mantain the context because it must be be made the current context by drawing functions to draw into
the specified window.
-We maintain the pixel format object because there seems to be now way to retrieve that from the context.
-To tell the caller to clean up PsychOSOpenOnscreenWindow returns FALSE if we fail to open the window. It
would be better to just issue an PsychErrorExit() and have that clean up everything allocated outside of
PsychOpenOnscreenWindow().
MK: The new option 'stereomode' allows selection of stereo display instead of mono display:
0 (default) == Old behaviour -> Monoscopic rendering context.
>0 == Stereo display, where the number defines the type of stereo algorithm to use.
=1 == Use OpenGL built-in stereo by creating a context/window with left- and right backbuffer. This is
the only mode of interest here, as it requires use of a stereo capable OpenGL pixelformat. All other
stereo modes are implemented by PTB itself in a platform independent manner on top of a standard mono
context.
*/
psych_bool PsychOSOpenOnscreenWindow(PsychScreenSettingsType *screenSettings, PsychWindowRecordType *windowRecord, int numBuffers, int stereomode, int conserveVRAM)
{
CGOpenGLDisplayMask displayMask;
CGLError error;
CGDirectDisplayID cgDisplayID;
CGLPixelFormatAttribute attribs[40];
int attribcount;
GLint numVirtualScreens;
GLenum glerr;
PsychRectType screenrect;
int i;
int windowLevel;
long scw, sch;
void* cocoaWindow = NULL;
// Map screen number to physical display handle cgDisplayID:
PsychGetCGDisplayIDFromScreenNumber(&cgDisplayID, screenSettings->screenNumber);
displayMask = CGDisplayIDToOpenGLDisplayMask(cgDisplayID);
// NULL-out Cocoa window handle, so this is well-defined in case of error:
windowRecord->targetSpecific.windowHandle = NULL;
// Retrieve windowLevel, an indicator of where non-CGL / non-fullscreen windows should
// be located wrt. to other windows. -2 = Allow regular window manager control of stacking
// order, visibility etc., -1 = Invisible/hidden, 0 = Behind everything else, occluded by
// everything else. 1 - 999 = At layer 'windowLevel' -> Occludes stuff on layers "below" it.
// 1000 - 1999 = At highest level, but partially translucent / alpha channel allows to make
// regions transparent. Range 1000 - 1499 = transparent for mouse and keyboard, alpha 0-99.99%,
// 1500-1599 = opaque for mouse and keyboard, alpha 0-99.99%, 2000 or higher: Above everything,
// fully opaque, occludes everything, a typical fullscreen onscreen window. 2000 is the default.
windowLevel = PsychPrefStateGet_WindowShieldingLevel();
// Window rect provided which has same size as screen?
// We do not use windowed mode if the provided window rectangle either
// matches the target screens rectangle (and therefore its exact size)
// or its screens global rectangle. In such cases we use CGL for better
// low level control and to exclude the desktop compositor from interfering:
PsychGetScreenRect(screenSettings->screenNumber, screenrect);
if (PsychMatchRect(screenrect, windowRecord->rect)) windowRecord->specialflags |= kPsychIsFullscreenWindow;
PsychGetGlobalScreenRect(screenSettings->screenNumber, screenrect);
if (PsychMatchRect(screenrect, windowRecord->rect)) windowRecord->specialflags |= kPsychIsFullscreenWindow;
if ((windowRecord->specialflags & kPsychIsFullscreenWindow) && (PsychPrefStateGet_Verbosity() > 3)) {
printf("PTB-INFO: Always using Cocoa for fullscreen windows to work around graphics driver bugs in OSX.\n");
printf("PTB-INFO: Presentation timing precision is not yet known for this configuration on most machines. Check your results.\n");
}
// Display for fullscreen window not captured? Timing precision is unclear in this mode. In theory the compositor should disable
// itself for fullscreen windows on modern OSX versions. If it really does that, who knows?
if ((windowRecord->specialflags & kPsychIsFullscreenWindow) && (PsychPrefStateGet_ConserveVRAM() & kPsychUseAGLCompositorForFullscreenWindows)) {
// Force a window rectangle that matches the global screen rectangle for that windows screen:
PsychCopyRect(windowRecord->rect, screenrect);
// Warn user about what's going on:
if (PsychPrefStateGet_Verbosity()>1) printf("PTB-INFO: No display capture / compositor lockout for fullscreen window. Timing precision is unknown.\n");
}
if ((windowRecord->specialflags & kPsychGUIWindow) && (PsychPrefStateGet_Verbosity() > 3)) {
printf("PTB-INFO: Onscreen window is configured as regular GUI window.\n");
}
// Create onscreen Cocoa window of requested position and size:
if (PsychCocoaCreateWindow(windowRecord, windowLevel, &cocoaWindow)) {
printf("\nPTB-ERROR[CreateNewWindow failed]: Failed to open Cocoa onscreen window\n\n");
return(FALSE);
}
// Transparent window requested?
if ((windowLevel >= 1000) && (windowLevel < 2000)) {
// Setup of global window alpha value for transparency. This is premultiplied to
// the individual per-pixel alpha values if transparency is enabled by Cocoa code.
//
// Levels 1000 - 1499 and 1500 to 1999 map to a master opacity level of 0.0 - 1.0:
PsychCocoaSetWindowAlpha(cocoaWindow, ((float) (windowLevel % 500)) / 499.0);
}
// Show it! Unless a windowLevel of -1 requests hiding the window:
if (windowLevel != -1) PsychCocoaShowWindow(cocoaWindow);
// If usercode wants a black startup screen then we add a pause of 0.5 seconds here
// before proceeding. This will avoid a white flash at window open time, which might
// be something the user wanted to avoid. Why does this help or is needed at all?
// Nobody knows, but this is Apples ridiculous toy OS, so why even ask such questions?
if (PsychPrefStateGet_VisualDebugLevel() < 4)
PsychYieldIntervalSeconds(0.5);
// Level zero means: Place behind all other windows:
if (windowLevel == 0) PsychCocoaSendBehind(cocoaWindow);
// Levels 1 to 999 define window levels for the group of the window.
// A level of -2 would leave this to the system:
if (windowLevel > 0 && windowLevel < 1000) PsychCocoaSetWindowLevel(cocoaWindow, windowLevel);
// Is the target display captured for a fullscreen window?
if (PsychIsScreenCaptured(screenSettings->screenNumber)) {
// Yes. Make sure our window is above the shielding window level:
PsychCocoaSetWindowLevel(cocoaWindow, (int) CGShieldingWindowLevel());
}
// Store window handle in windowRecord:
windowRecord->targetSpecific.windowHandle = cocoaWindow;
// Store vblank startline aka true height of physical display screen in pixels:
PsychGetScreenPixelSize(screenSettings->screenNumber, &scw, &sch);
windowRecord->VBL_Startline = (int) sch;
// Define pixelformat attributes for OpenGL contexts:
// No pixelformat attribs to start with:
attribcount = 0;
attribs[attribcount++]=kCGLPFADisplayMask;
attribs[attribcount++]=displayMask;
// 10 bit per component integer framebuffer requested (10-10-10-2)?
if (windowRecord->depth == 30) {
// Request a 10 bit per color component framebuffer with 2 bit alpha channel:
printf("PTB-INFO: Trying to enable 10 bpc, 30 bit integer framebuffer...\n");
attribs[attribcount++]=kCGLPFANoRecovery;
attribs[attribcount++]=kCGLPFAMinimumPolicy;
attribs[attribcount++]=kCGLPFAColorSize;
attribs[attribcount++]=10*3;
attribs[attribcount++]=kCGLPFAAlphaSize;
attribs[attribcount++]=2;
}
// 11 bit per component integer framebuffer requested (11-11-10-0)?
if (windowRecord->depth == 33) {
// Request a ~ 11 bit per color component framebuffer without alpha channel:
printf("PTB-INFO: Trying to enable 11 bpc, 32 bit integer framebuffer...\n");
attribs[attribcount++]=kCGLPFANoRecovery;
attribs[attribcount++]=kCGLPFAMinimumPolicy;
attribs[attribcount++]=kCGLPFAColorSize;
attribs[attribcount++]=32;
attribs[attribcount++]=kCGLPFAAlphaSize;
attribs[attribcount++]=0;
}
// 16 bit per component integer framebuffer requested (16-16-16-16)?
if (windowRecord->depth == 48) {
// Request a 16 bit per color component framebuffer:
printf("PTB-INFO: Trying to enable 16 bpc, 64 bit integer framebuffer...\n");
attribs[attribcount++]=kCGLPFANoRecovery;
attribs[attribcount++]=kCGLPFAMinimumPolicy;
attribs[attribcount++]=kCGLPFAColorSize;
attribs[attribcount++]=16*3;
attribs[attribcount++]=kCGLPFAAlphaSize;
attribs[attribcount++]=16;
}
// 16 bit per component, 64 bit framebuffer requested (16-16-16-16)?
if (windowRecord->depth == 64) {
// Request a floating point framebuffer in 16-bit half-float format, i.e., RGBA = 16 bits per component.
printf("PTB-INFO: Trying to enable 16 bpc float framebuffer...\n");
attribs[attribcount++]=kCGLPFAColorFloat;
attribs[attribcount++]=kCGLPFAMinimumPolicy;
attribs[attribcount++]=kCGLPFAColorSize;
attribs[attribcount++]=16*3;
attribs[attribcount++]=kCGLPFAAlphaSize;
attribs[attribcount++]=16;
}
// 32 bit per component, 128 bit framebuffer requested (32-32-32-32)?
if (windowRecord->depth == 128) {
// Request a floating point framebuffer in 32-bit float format, i.e., RGBA = 32 bits per component.
printf("PTB-INFO: Trying to enable 32 bpc float framebuffer...\n");
attribs[attribcount++]=kCGLPFAColorFloat;
attribs[attribcount++]=kCGLPFAMinimumPolicy;
attribs[attribcount++]=kCGLPFAColorSize;
attribs[attribcount++]=32*3;
attribs[attribcount++]=kCGLPFAAlphaSize;
attribs[attribcount++]=32;
}
// Possible to request use of the Apple floating point software renderer:
if (conserveVRAM & kPsychUseSoftwareRenderer) {
#ifndef kCGLRendererGenericFloatID
#define kCGLRendererGenericFloatID 0x00020400
#endif
attribs[attribcount++]=AGL_RENDERER_ID;
attribs[attribcount++]=kCGLRendererGenericFloatID;
}
// Support for 3D rendering requested?
if (PsychPrefStateGet_3DGfx()) {
// Yes. Allocate a 24-Bit depth and 8-Bit stencilbuffer for this purpose:
attribs[attribcount++]=kCGLPFADepthSize;
attribs[attribcount++]=24;
attribs[attribcount++]=kCGLPFAStencilSize;
attribs[attribcount++]=8;
// Alloc an accumulation buffer as well?
if (PsychPrefStateGet_3DGfx() & 2) {
// Yes: Alloc accum buffer, request 64 bpp, aka 16 bits integer per color component if possible:
attribs[attribcount++]=kCGLPFAAccumSize;
attribs[attribcount++]=64;
}
}
if(numBuffers>=2){
// Enable double-buffering:
attribs[attribcount++]=kCGLPFADoubleBuffer;
if ((conserveVRAM & kPsychDisableAUXBuffers) == 0) {
// Allocate one or two (for mono vs. stereo display) AUX buffers for "don't clear" mode of Screen('Flip'):
// Not clearing the framebuffer after "Flip" is implemented by storing a backup-copy of
// the backbuffer to AUXs before flip and restoring the content from AUXs after flip.
// Unless the imaging pipeline is active, which doesn't need AUX buffers due to internal
// storage of fb content in its drawbufferFBO's:
attribs[attribcount++]=kCGLPFAAuxBuffers;
attribs[attribcount++]=(stereomode==kPsychOpenGLStereo || stereomode==kPsychCompressedTLBRStereo || stereomode==kPsychCompressedTRBLStereo) ? 2 : 1;
}
}
// If stereo display output is requested with OpenGL native stereo, request a stereo-enabled rendering context.
// This is deprecated since 10.11 El Capitan, and in fact does no longer work - OpenGL quad buffered stereo is
// dead on 10.11 on all tested GPU's from Intel, NVidia, AMD.
if(stereomode==kPsychOpenGLStereo) {
attribs[attribcount++] = kCGLPFAStereo;
}
// Multisampled Anti-Aliasing requested?
if (windowRecord->multiSample > 0) {
// Request a multisample buffer:
attribs[attribcount++]= kCGLPFASampleBuffers;
attribs[attribcount++]= 1;
// Request at least multiSample samples per pixel:
attribs[attribcount++]= kCGLPFASamples;
attribs[attribcount++]= windowRecord->multiSample;
}
// Finalize attribute array with NULL.
attribs[attribcount++]=(CGLPixelFormatAttribute)NULL;
// Init to zero:
windowRecord->targetSpecific.pixelFormatObject = NULL;
windowRecord->targetSpecific.glusercontextObject = NULL;
windowRecord->targetSpecific.glswapcontextObject = NULL;
// Try to find matching pixelformat:
error = CGLChoosePixelFormat(attribs, &(windowRecord->targetSpecific.pixelFormatObject), &numVirtualScreens);
// No valid pixelformat found and stereo format requested?
if ((error || (windowRecord->targetSpecific.pixelFormatObject == NULL)) && (stereomode == kPsychOpenGLStereo)) {
// Yep: Stereo may be the culprit. Remove the stereo attribute by overwriting it with something
// that is essentially a no-op, specifically kCGLPFAAccelerated which is supported by all real
// renderers that might end up in this code-path:
for (i = 0; i < attribcount && attribs[i] != kCGLPFAStereo; i++);
attribs[i] = kCGLPFAAccelerated;
// Retry query of pixelformat without request for native OpenGL quad-buffered stereo. If we succeed, we're
// sort of ok, as the higher-level code will fallback to stereomode kPsychFrameSequentialStereo - our own
// homegrown frame-sequential stereo support, which may be good enough.
error = CGLChoosePixelFormat(attribs, &(windowRecord->targetSpecific.pixelFormatObject), &numVirtualScreens);
if (error || (windowRecord->targetSpecific.pixelFormatObject == NULL)) {
windowRecord->targetSpecific.pixelFormatObject = NULL;
printf("\nPTB-ERROR[ChoosePixelFormat failed: %s]: Disabling OpenGL native quad-buffered stereo did not help. Moving on...\n\n", CGLErrorString(error));
}
}
// Now try if choosing a matching format for a lower multisample mode helps to get unstuck:
if (windowRecord->multiSample > 0) {
if (windowRecord->targetSpecific.pixelFormatObject==NULL && windowRecord->multiSample > 0) {
// Failed. Probably due to too demanding multisample requirements: Lets lower them...
for (i = 0; i < attribcount && attribs[i] != kCGLPFASamples; i++);
while (windowRecord->targetSpecific.pixelFormatObject == NULL && windowRecord->multiSample > 0) {
attribs[i+1]--;
windowRecord->multiSample--;
error = CGLChoosePixelFormat(attribs, &(windowRecord->targetSpecific.pixelFormatObject), &numVirtualScreens);
}
if (windowRecord->multiSample == 0 && windowRecord->targetSpecific.pixelFormatObject == NULL) {
// Ok, multisampling is now at zero and we still don't succeed. Disable multisampling completely:
for (i=0; i<attribcount && attribs[i]!=kCGLPFASampleBuffers; i++);
attribs[i+1] = 0;
printf("\nPTB-ERROR[ChoosePixelFormat failed: %s]: Disabling multisample anti-aliasing did not help. Moving on...\n\n", CGLErrorString(error));
}
}
}
// Try choosing a matching display configuration again and create the window and rendering context:
// If one of these two fails, then the installed gfx hardware is not good enough to satisfy our
// requirements, or we have massive ressource shortage in the system. -> Screwed up anyway, so we abort.
if (windowRecord->targetSpecific.pixelFormatObject == NULL) error = CGLChoosePixelFormat(attribs, &(windowRecord->targetSpecific.pixelFormatObject), &numVirtualScreens);
if (error) {
printf("\nPTB-ERROR[ChoosePixelFormat failed: %s]: Reason unknown. There could be insufficient video memory or a driver malfunction. Giving up.\n\n", CGLErrorString(error));
return(FALSE);
}
// Create an OpenGL rendering context with the selected pixelformat: Share its ressources with 'slaveWindow's context, if slaveWindow is non-NULL.
// If slaveWindow is non-NULL here, then slaveWindow is typically another onscreen window. Therefore this establishes OpenGL resource sharing across
// different onscreen windows in a session, e.g., for multi-display operation:
error=CGLCreateContext(windowRecord->targetSpecific.pixelFormatObject, ((windowRecord->slaveWindow) ? windowRecord->slaveWindow->targetSpecific.contextObject : NULL),
&(windowRecord->targetSpecific.contextObject));
if (error) {
printf("\nPTB-ERROR[ContextCreation failed: %s]: Could not create master OpenGL context for new onscreen window. Insufficient video memory?\n\n", CGLErrorString(error));
return(FALSE);
}
// Enable the OpenGL rendering context associated with our window:
error=CGLSetCurrentContext(windowRecord->targetSpecific.contextObject);
if (error) {
printf("\nPTB-ERROR[SetCurrentContext failed: %s]: Insufficient video memory\n\n", CGLErrorString(error));
return(FALSE);
}
// NULL-out the AGL context field, just for safety...
windowRecord->targetSpecific.deviceContext = NULL;
// Ok, the master OpenGL rendering context for this new onscreen window is up and running.
// Auto-detect and bind all available OpenGL extensions via GLEW:
glerr = glewInit();
if (GLEW_OK != glerr)
{
/* Problem: glewInit failed, something is seriously wrong. */
printf("\nPTB-ERROR[GLEW init failed: %s]: Please report this to the forum. Will try to continue, but may crash soon!\n\n", glewGetErrorString(glerr));
fflush(NULL);
}
else {
if (PsychPrefStateGet_Verbosity()>3) printf("PTB-INFO: Using GLEW version %s for automatic detection of OpenGL extensions...\n", glewGetString(GLEW_VERSION));
}
// Enable multisampling if it was requested:
if (windowRecord->multiSample > 0) glEnable(GL_MULTISAMPLE);
// External 3D graphics support enabled?
if (PsychPrefStateGet_3DGfx()) {
// Yes. We need to create an extra OpenGL rendering context for the external
// OpenGL code to provide optimal state-isolation. The context shares all
// heavyweight ressources likes textures, FBOs, VBOs, PBOs, shader, display lists and
// starts off as an identical copy of PTB's context as of here.
error=CGLCreateContext(windowRecord->targetSpecific.pixelFormatObject, windowRecord->targetSpecific.contextObject, &(windowRecord->targetSpecific.glusercontextObject));
if (error) {
printf("\nPTB-ERROR[UserContextCreation failed: %s]: Creating a private OpenGL context for userspace OpenGL failed.\n\n", CGLErrorString(error));
return(FALSE);
}
}
// Create glswapcontextObject - An OpenGL context for exclusive use by parallel background threads,
// e.g., our thread for async flip operations and self-made frame-sequential stereo:
error=CGLCreateContext(windowRecord->targetSpecific.pixelFormatObject, windowRecord->targetSpecific.contextObject, &(windowRecord->targetSpecific.glswapcontextObject));
if (error) {
printf("\nPTB-ERROR[SwapContextCreation failed: %s]: Creating a private OpenGL context for async-bufferswaps failed.\n\n", CGLErrorString(error));
CGLSetCurrentContext(NULL);
return(FALSE);
}
// Store Cocoa onscreen window handle:
windowRecord->targetSpecific.windowHandle = cocoaWindow;
// Objective-C setup path, using Cocoa + NSOpenGLContext wrapped around already
// existing and setup CGLContext:
if (PsychCocoaSetupAndAssignOpenGLContextsFromCGLContexts(cocoaWindow, windowRecord)) {
printf("\nPTB-ERROR[Cocoa OpenGL setup failed]: Setup failed for unknown reasons.\n\n");
PsychCocoaDisposeWindow(windowRecord);
return(FALSE);
}
// Check for output display rotation enabled. Will impair timing/timestamping because
// it uses the desktop compositor for a rotated copy blit, instead of via rotated crtc
// scanout, as most crtc's don't support this in hardware:
if ((((int) CGDisplayRotation(cgDisplayID)) != 0) && (PsychPrefStateGet_Verbosity() > 1)) {
printf("PTB-WARNING: Your onscreen windows output display has rotation enabled. It is not displaying in upright orientation.\n");
printf("PTB-WARNING: On most graphics cards this will cause unreliable stimulus presentation timing and timestamping.\n");
printf("PTB-WARNING: If you want non-upright stimulus presentation, look at 'help PsychImaging' on how to achieve this in\n");
printf("PTB-WARNING: a way that doesn't impair timing. The subfunctions 'FlipHorizontal' and 'FlipVertical' are what you probably need.\n");
}
// First reference to this screen by a window?
if (screenRefCount[screenSettings->screenNumber] == 0) {
// High precision timestamping enabled? If so, we need to setup the fallback
// timestamping methods in case beamposition timestamping doesn't work:
if (PsychPrefStateGet_VBLTimestampingMode() > 0) {
// Use of CoreVideo is needed on 10.7 and later due to brokeness of the old method (thanks Apple!):
if (PsychPrefStateGet_Verbosity() > 2) {
printf("PTB-INFO: Will use fragile CoreVideo timestamping as fallback if beamposition timestamping doesn't work.\n");
// Recommend use of kernel driver if it isn't installed already for all but Intel GPU's:
if (!PsychOSIsKernelDriverAvailable(screenSettings->screenNumber) && !strstr((char*) glGetString(GL_VENDOR), "Intel")) {
printf("PTB-INFO: Installation of the PsychtoolboxKernelDriver is strongly recommended if you care about precise visual\n");
printf("PTB-INFO: onset timestamping or timing. See 'help PsychtoolboxKernelDriver' for installation instructions.\n");
}
}
if (NULL == cvDisplayLink[screenSettings->screenNumber]) {
// CoreVideo timestamping:
//
// Create and start a CVDisplayLink for this screen.
if (kCVReturnSuccess != CVDisplayLinkCreateWithCGDisplay(cgDisplayID, &cvDisplayLink[screenSettings->screenNumber])) {
if (PsychPrefStateGet_Verbosity()>1) printf("PTB-WARNING: Failed to create CVDisplayLink for screenId %i. This may impair VBL timestamping.\n", screenSettings->screenNumber);
} else {
// Assign dummy output callback, as this is mandatory to get the link up and running:
CVDisplayLinkSetOutputCallback(cvDisplayLink[screenSettings->screenNumber], &PsychCVDisplayLinkOutputCallback, (void*) (long int) screenSettings->screenNumber);
// Setup shared data structure and mutex:
memset(&cvDisplayLinkData[screenSettings->screenNumber], 0, sizeof(cvDisplayLinkData[screenSettings->screenNumber]));
PsychInitMutex(&(cvDisplayLinkData[screenSettings->screenNumber].mutex));
// Start the link:
if (kCVReturnSuccess != CVDisplayLinkStart(cvDisplayLink[screenSettings->screenNumber])) {
// Failed to start: Release it again and report error:
CVDisplayLinkRelease(cvDisplayLink[screenSettings->screenNumber]);
cvDisplayLink[screenSettings->screenNumber] = NULL;
// Teardown shared data structure and mutex:
PsychDestroyMutex(&(cvDisplayLinkData[screenSettings->screenNumber].mutex));
if (PsychPrefStateGet_Verbosity()>1) printf("PTB-WARNING: Failed to start CVDisplayLink for screenId %i. This may impair VBL timestamping.\n", screenSettings->screenNumber);
}
else {
// Display link started: Report some stuff for the fun of it...
if (PsychPrefStateGet_Verbosity() > 3) {
// Wait for 50 msecs before query of video refresh from display link to give it a chance to start up:
PsychWaitIntervalSeconds(0.050);
printf("PTB-INFO: CVDisplayLink for screen %i created to work around the brokenness of Apple Mac OS/X 10.7 and later:\n", screenSettings->screenNumber);
printf("PTB-INFO: Video refresh interval as measured by CoreVideo display link: %f msecs.\n", (float) CVDisplayLinkGetActualOutputVideoRefreshPeriod(cvDisplayLink[screenSettings->screenNumber]) * 1000.0);
CVTime outLatency = CVDisplayLinkGetOutputVideoLatency(cvDisplayLink[screenSettings->screenNumber]);
printf("PTB-INFO: Video display output delay as reported by CoreVideo display link: %f msecs.\n", screenSettings->screenNumber, (float) (((double) outLatency.timeValue / (double) outLatency.timeScale) * 1000.0));
}
}
}
}
}
else {
// VBLtimestampingmode 0 or -1 -- No CoreVideo fallback for timestamping if beamposition timestamping is unavailable:
// This is the new default as of Psychtoolbox 3.0.12 to avoid the buggy, crashy, unreliably CoreVideo fallback.
// Recommend use of kernel driver if it isn't installed already for all but Intel GPU's:
if (!PsychOSIsKernelDriverAvailable(screenSettings->screenNumber) && !strstr((char*) glGetString(GL_VENDOR), "Intel")) {
printf("PTB-INFO: Installation of the PsychtoolboxKernelDriver is strongly recommended if you care about precise visual\n");
printf("PTB-INFO: onset timestamping or timing. See 'help PsychtoolboxKernelDriver' for installation instructions.\n");
}
}
}
// Retain reference of this window to its screen:
screenRefCount[screenSettings->screenNumber]++;
// Done.
return(TRUE);
}
//-------------------------------------------------------------------------------------------------//
void OSXWindow::createCGLFullscreen(unsigned int width, unsigned int height, unsigned int depth, unsigned int fsaa, CGLContextObj sharedContext)
{
// Find the best match to what was requested
boolean_t exactMatch = 0;
int reqWidth, reqHeight, reqDepth;
#if defined(MAC_OS_X_VERSION_10_6) && MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_6
// Get a copy of the current display mode
CGDisplayModeRef displayMode = CGDisplayCopyDisplayMode(kCGDirectMainDisplay);
// Loop through all display modes to determine the closest match.
// CGDisplayBestModeForParameters is deprecated on 10.6 so we will emulate it's behavior
// Try to find a mode with the requested depth and equal or greater dimensions first.
// If no match is found, try to find a mode with greater depth and same or greater dimensions.
// If still no match is found, just use the current mode.
CFArrayRef allModes = CGDisplayCopyAllDisplayModes(kCGDirectMainDisplay, NULL);
for(int i = 0; i < CFArrayGetCount(allModes); i++)
{
CGDisplayModeRef mode = (CGDisplayModeRef)CFArrayGetValueAtIndex(allModes, i);
String modeString = StringConverter::toString(CGDisplayModeGetWidth(mode)) + String(" x ") +
StringConverter::toString(CGDisplayModeGetHeight(mode)) + String(" @ ") +
StringConverter::toString(bitDepthFromDisplayMode(mode)) + "bpp.";
LogManager::getSingleton().logMessage(modeString);
if(bitDepthFromDisplayMode(mode) != depth)
continue;
if((CGDisplayModeGetWidth(mode) >= width) && (CGDisplayModeGetHeight(mode) >= height))
{
displayMode = mode;
exactMatch = 1;
break;
}
}
// No depth match was found
if(!exactMatch)
{
for(int i = 0; i < CFArrayGetCount(allModes); i++)
{
CGDisplayModeRef mode = (CGDisplayModeRef)CFArrayGetValueAtIndex(allModes, i);
if(bitDepthFromDisplayMode(mode) >= depth)
continue;
if((CGDisplayModeGetWidth(mode) >= width) && (CGDisplayModeGetHeight(mode) >= height))
{
displayMode = mode;
exactMatch = 1;
break;
}
}
}
reqWidth = CGDisplayModeGetWidth(displayMode);
reqHeight = CGDisplayModeGetHeight(displayMode);
reqDepth = bitDepthFromDisplayMode(displayMode);
#else
CFDictionaryRef displayMode = CGDisplayBestModeForParameters(kCGDirectMainDisplay, depth, width, height, &exactMatch);
const void *value = NULL;
value = CFDictionaryGetValue(displayMode, kCGDisplayWidth);
CFNumberGetValue((CFNumberRef)value, kCFNumberSInt32Type, &reqWidth);
value = CFDictionaryGetValue(displayMode, kCGDisplayHeight);
CFNumberGetValue((CFNumberRef)value, kCFNumberSInt32Type, &reqHeight);
value = CFDictionaryGetValue(displayMode, kCGDisplayBitsPerPixel);
CFNumberGetValue((CFNumberRef)value, kCFNumberSInt32Type, &reqDepth);
#endif
if(!exactMatch)
{
// TODO: Report the size difference
// That mode is not available, using the closest match
String request = StringConverter::toString(width) + String(" x ") + StringConverter::toString(height) + String(" @ ") +
StringConverter::toString(depth) + "bpp. ";
String received = StringConverter::toString(reqWidth) + String(" x ") +
StringConverter::toString(reqHeight) + String(" @ ") +
StringConverter::toString(reqDepth) + "bpp. ";
LogManager::getSingleton().logMessage(String("RenderSystem Warning: You requested a fullscreen mode of ") + request +
String(" This mode is not available and you will receive the closest match. The best display mode for the parameters requested is: ")
+ received);
}
// Do the fancy display fading
CGDisplayFadeReservationToken reservationToken;
CGAcquireDisplayFadeReservation(kCGMaxDisplayReservationInterval,
&reservationToken);
CGDisplayFade(reservationToken,
0.5,
kCGDisplayBlendNormal,
kCGDisplayBlendSolidColor,
0.0, 0.0, 0.0,
true);
// Grab the main display and save it for later.
// You could render to any display, but picking what display
// to render to could be interesting.
CGDisplayCapture(kCGDirectMainDisplay);
// Switch to the correct resolution
#if defined(MAC_OS_X_VERSION_10_6) && MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_6
CGDisplaySetDisplayMode(kCGDirectMainDisplay, displayMode, NULL);
#else
CGDisplaySwitchToMode(kCGDirectMainDisplay, displayMode);
#endif
// Get a pixel format that best matches what we are looking for
CGLPixelFormatAttribute attribs[] = {
kCGLPFADoubleBuffer,
kCGLPFAAlphaSize, (CGLPixelFormatAttribute)8,
kCGLPFADepthSize, (CGLPixelFormatAttribute)reqDepth,
kCGLPFAStencilSize, (CGLPixelFormatAttribute)8,
kCGLPFASampleBuffers, (CGLPixelFormatAttribute)0,
kCGLPFASamples, (CGLPixelFormatAttribute)0,
kCGLPFAFullScreen,
kCGLPFASingleRenderer,
kCGLPFAAccelerated,
kCGLPFADisplayMask, (CGLPixelFormatAttribute)CGDisplayIDToOpenGLDisplayMask(kCGDirectMainDisplay),
(CGLPixelFormatAttribute)0
};
// Set up FSAA if it was requested
if(fsaa > 1)
{
// turn on kCGLPFASampleBuffers
attribs[8] = (CGLPixelFormatAttribute)1;
// set the samples for kCGLPFASamples
attribs[10] = (CGLPixelFormatAttribute)fsaa;
}
CGLError err;
CGLPixelFormatObj pixelFormatObj;
#if (MAC_OS_X_VERSION_MAX_ALLOWED > MAC_OS_X_VERSION_10_4)
GLint numPixelFormats = 0;
err = CGLChoosePixelFormat(attribs, &pixelFormatObj, &numPixelFormats);
#else
long numPixelFormats = 0;
err = CGLChoosePixelFormat(attribs, &pixelFormatObj, &numPixelFormats);
#endif
if(err != 0)
{
CGReleaseAllDisplays();
OGRE_EXCEPT(Exception::ERR_RENDERINGAPI_ERROR, String("CGL Error: " + String(CGLErrorString(err))), "OSXWindow::createCGLFullscreen");
}
// Create the CGLcontext from our pixel format, share it with the sharedContext passed in
err = CGLCreateContext(pixelFormatObj, sharedContext, &mCGLContext);
if(err != 0)
{
CGReleaseAllDisplays();
OGRE_EXCEPT(Exception::ERR_RENDERINGAPI_ERROR, String("CGL Error: " + String(CGLErrorString(err))), "OSXWindow::createCGLFullscreen");
}
// Once we have the context we can destroy the pixel format
// In order to share contexts you must keep a pointer to the context object around
// Our context class will now manage the life of the pixelFormatObj
//CGLDestroyPixelFormat(pixelFormatObj);
// Set the context to full screen
#if defined(MAC_OS_X_VERSION_10_6) && MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_6
CGLSetFullScreenOnDisplay(mCGLContext, CGDisplayIDToOpenGLDisplayMask(kCGDirectMainDisplay));
#else
CGLSetFullScreen(mCGLContext);
#endif
// Set the context as current
CGLSetCurrentContext(mCGLContext);
// This synchronizes CGL with the vertical retrace
// Apple docs suggest that OpenGL blocks rendering calls when waiting for
// a vertical retrace anyhow.
#if (MAC_OS_X_VERSION_MAX_ALLOWED > MAC_OS_X_VERSION_10_4)
GLint swapInterval = 1;
CGLSetParameter(mCGLContext, kCGLCPSwapInterval, &swapInterval);
#else
long swapInterval = 1;
CGLSetParameter(mCGLContext, kCGLCPSwapInterval, &swapInterval);
#endif
// Give a copy of our context to the rendersystem
mContext = new OSXCGLContext(mCGLContext, pixelFormatObj);
// Let everyone know we are fullscreen now
mIsFullScreen = true;
// Set some other variables. Just in case we got a different value from CGDisplayBestModeForParameters than we requested
mWidth = reqWidth;
mHeight = reqHeight;
mColourDepth = reqDepth;
CGDisplayFade(reservationToken,
2.0,
kCGDisplayBlendSolidColor,
kCGDisplayBlendNormal,
0.0, 0.0, 0.0,
false);
CGReleaseDisplayFadeReservation(reservationToken);
}
/*
* PsychOSFlipWindowBuffers() -- OS-X swapbuffers call.
*/
void PsychOSFlipWindowBuffers(PsychWindowRecordType *windowRecord)
{
CGLError cglerr;
psych_bool oldStyle = (PsychPrefStateGet_ConserveVRAM() & kPsychUseOldStyleAsyncFlips) ? TRUE : FALSE;
// Execute OS neutral bufferswap code first:
PsychExecuteBufferSwapPrefix(windowRecord);
// Trigger the "Front <-> Back buffer swap (flip) (on next vertical retrace)":
if ((cglerr = CGLFlushDrawable((oldStyle || PsychIsMasterThread()) ? windowRecord->targetSpecific.contextObject : windowRecord->targetSpecific.glswapcontextObject))) {
// Failed! This is an internal OpenGL/CGL error. We can't do anything about it, just report it:
printf("PTB-ERROR: Doublebuffer-Swap failed (probably during 'Flip')! Internal OpenGL subsystem/driver error: %s. System misconfigured or driver/operating system bug?!?\n", CGLErrorString(cglerr));
}
}
int screen_InitCapture( demux_t *p_demux )
{
demux_sys_t *p_sys = p_demux->p_sys;
screen_data_t *p_data;
CGLPixelFormatAttribute attribs[4];
CGLPixelFormatObj pix;
GLint npix;
GLint viewport[4];
GLuint displayMask;
CGLError returnedError;
p_sys->p_data = p_data =
( screen_data_t * )malloc( sizeof( screen_data_t ) );
attribs[0] = kCGLPFAFullScreen;
attribs[1] = kCGLPFADisplayMask;
attribs[2] = CGDisplayIDToOpenGLDisplayMask( CGMainDisplayID() );
attribs[3] = 0;
returnedError = CGLChoosePixelFormat( attribs, &pix, &npix );
if (returnedError)
goto errorHandling;
returnedError = CGLCreateContext( pix, NULL, &( p_data->screen ) );
if (returnedError)
goto errorHandling;
returnedError = CGLDestroyPixelFormat( pix );
if (returnedError)
goto errorHandling;
returnedError = CGLSetCurrentContext( p_data->screen );
if (returnedError)
goto errorHandling;
returnedError = CGLSetFullScreen( p_data->screen );
if (returnedError)
goto errorHandling;
glGetIntegerv( GL_VIEWPORT, viewport );
p_data->screen_width = viewport[2];
p_data->screen_height = viewport[3];
p_data->left = p_sys->i_left;
p_data->top = p_sys->i_top;
p_data->src_width = var_CreateGetInteger( p_demux, "screen-width" );
p_data->src_height = var_CreateGetInteger( p_demux, "screen-height" );
if (p_data->src_width <= 0 || p_data->src_height <= 0) {
p_data->src_width = p_data->screen_width;
p_data->src_height = p_data->screen_height;
}
p_data->dest_width = p_data->src_width;
p_data->dest_height = p_data->src_height;
attribs [0] = kCGLPFAOffScreen;
attribs [1] = kCGLPFAColorSize;
attribs [2] = 32;
attribs [3] = 0;
returnedError = CGLChoosePixelFormat( attribs, &pix, &npix );
if (returnedError)
goto errorHandling;
returnedError = CGLCreateContext( pix, NULL, &( p_data->scaled ) );
if (returnedError)
goto errorHandling;
returnedError = CGLDestroyPixelFormat( pix );
if (returnedError)
goto errorHandling;
returnedError = CGLSetCurrentContext( p_data->scaled );
if (returnedError)
goto errorHandling;
p_data->scaled_image = ( char * )malloc( p_data->dest_width
* p_data->dest_height * 4 );
#warning FIXME: CGLSetOffScreen is no longer supported in the future!
returnedError = CGLSetOffScreen( p_data->scaled, p_data->dest_width, p_data->dest_height, p_data->dest_width * 4, p_data->scaled_image );
if (returnedError)
goto errorHandling;
es_format_Init( &p_sys->fmt, VIDEO_ES, VLC_CODEC_RGB32 );
/* p_sys->fmt.video.i_* must set to screen size, not subscreen size */
p_sys->fmt.video.i_width = p_data->screen_width;
p_sys->fmt.video.i_visible_width = p_data->screen_width;
p_sys->fmt.video.i_height = p_data->screen_height;
p_sys->fmt.video.i_bits_per_pixel = 32;
glGenTextures( 1, &( p_data->texture ) );
glBindTexture( GL_TEXTURE_2D, p_data->texture );
p_data->texture_image
= ( char * )malloc( p_data->src_width * p_data->src_height * 4 );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP );
glGenTextures( 1, &( p_data->cursor_texture ) );
glBindTexture( GL_TEXTURE_2D, p_data->cursor_texture );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP );
CGSNewConnection( NULL, &( p_data->connection ) );
return VLC_SUCCESS;
errorHandling:
msg_Err( p_demux, "Core OpenGL failure: %s", CGLErrorString( returnedError ) );
return VLC_EGENERIC;
}
// if error dump cgl errors to debugger string, return error
OSStatus cglReportError (CGLError err)
{
if (0 != err)
reportError ((char *) CGLErrorString(err));
return err;
}
int screen_InitCapture( demux_t *p_demux )
{
demux_sys_t *p_sys = p_demux->p_sys;
screen_data_t *p_data;
CGLError returnedError;
unsigned int i;
p_sys->p_data = p_data =
( screen_data_t * )calloc( 1, sizeof( screen_data_t ) );
p_data->display_id = kCGDirectMainDisplay;
unsigned int displayCount;
displayCount = 0;
returnedError = CGGetOnlineDisplayList( 0, NULL, &displayCount );
if( !returnedError )
{
CGDirectDisplayID *ids;
ids = ( CGDirectDisplayID * )malloc( displayCount * sizeof( CGDirectDisplayID ) );
returnedError = CGGetOnlineDisplayList( displayCount, ids, &displayCount );
if( !returnedError )
{
if ( p_sys->i_display_id > 0 )
{
for( i = 0; i < displayCount; i ++ )
{
if( p_sys->i_display_id == ids[i] )
{
p_data->display_id = ids[i];
break;
}
}
}
else if ( p_sys->i_screen_index > 0 && p_sys->i_screen_index <= displayCount )
{
p_data->display_id = ids[p_sys->i_screen_index - 1];
}
}
free( ids );
}
/* CGImage Function
* CGDisplayCreateImageForRect is available in Mac OS X v10.6 and later */
p_data->myCGDisplayCreateImageForRect = NULL;
CFURLRef frameworkURL = NULL;
CFStringRef path = CFSTR( "file://localhost/System/Library/Frameworks/ApplicationServices.framework/Frameworks/CoreGraphics.framework" );
frameworkURL = CFURLCreateWithString( kCFAllocatorDefault, path, NULL );
if( frameworkURL != NULL )
{
p_data->bundle = CFBundleCreate( kCFAllocatorDefault, frameworkURL );
if( p_data->bundle != NULL )
{
p_data->myCGDisplayCreateImageForRect =
( typeofCGDisplayCreateImageForRect )CFBundleGetFunctionPointerForName
( p_data->bundle, CFSTR( "CGDisplayCreateImageForRect" ) );
}
CFRelease( frameworkURL );
}
/* Screen Size */
CGRect rect = CGDisplayBounds( p_data->display_id );
p_data->screen_left = rect.origin.x;
p_data->screen_top = rect.origin.y;
p_data->screen_width = rect.size.width;
p_data->screen_height = rect.size.height;
p_data->width = p_sys->i_width;
p_data->height = p_sys->i_height;
if( p_data->width <= 0 || p_data->height <= 0 )
{
p_data->width = p_data->screen_width;
p_data->height = p_data->screen_height;
}
/* Screen Context */
if( p_data->myCGDisplayCreateImageForRect == NULL )
{
returnedError =
screen_CreateContext( &p_data->screen,
kCGLPFAFullScreen,
kCGLPFADisplayMask,
( CGLPixelFormatAttribute )CGDisplayIDToOpenGLDisplayMask( p_data->display_id ),
( CGLPixelFormatAttribute )0 );
if( returnedError )
goto errorHandling;
returnedError = CGLSetCurrentContext( p_data->screen );
if( returnedError )
goto errorHandling;
returnedError = CGLSetFullScreen( p_data->screen );
if( returnedError )
goto errorHandling;
}
/* Clipped Context */
returnedError =
screen_CreateContext( &p_data->clipped,
kCGLPFAOffScreen,
kCGLPFAColorSize,
( CGLPixelFormatAttribute )32,
( CGLPixelFormatAttribute )0 );
if( returnedError )
goto errorHandling;
returnedError = CGLSetCurrentContext( p_data->clipped );
if( returnedError )
goto errorHandling;
/* Clipped Image */
p_data->clipped_image =
( char * )malloc( p_data->width * p_data->height * 4 );
returnedError = CGLSetOffScreen( p_data->clipped, p_data->width, p_data->height, p_data->width * 4, p_data->clipped_image );
if( returnedError )
goto errorHandling;
/* Screen Image */
if( p_data->myCGDisplayCreateImageForRect != NULL )
{
p_data->screen_image =
( char * )malloc( p_data->screen_width * p_data->screen_height * 4 );
}
else
{
p_data->screen_image =
( char * )malloc( p_data->width * p_data->height * 4 );
}
/* Cursor */
CGSNewConnection( NULL, &( p_data->connection ) );
p_data->cursor_need_update = 1;
p_data->cursor_seed = 0;
glGenTextures( 1, &( p_data->cursor_texture ) );
glBindTexture( GL_TEXTURE_2D, p_data->cursor_texture );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP );
/* System */
es_format_Init( &p_sys->fmt, VIDEO_ES, VLC_CODEC_RGB32 );
/* p_sys->fmt.video.i_* must set to screen size, not subscreen size */
p_sys->fmt.video.i_width = p_data->screen_width;
p_sys->fmt.video.i_visible_width = p_data->screen_width;
p_sys->fmt.video.i_height = p_data->screen_height;
p_sys->fmt.video.i_bits_per_pixel = 32;
return VLC_SUCCESS;
errorHandling:
msg_Err( p_demux, "Core OpenGL failure: %s", CGLErrorString( returnedError ) );
return VLC_EGENERIC;
}
void check(CGLError error) {
if (error != kCGLNoError) {
throw Exception(format("CGL Error: {0}", utf8::decode(CGLErrorString(error))));
}
}
int _glfwPlatformOpenWindow( int width, int height,
const _GLFWwndconfig *wndconfig,
const _GLFWfbconfig *fbconfig )
{
OSStatus error;
unsigned int windowAttributes;
ProcessSerialNumber psn;
// TODO: Break up this function!
_glfwWin.windowUPP = NULL;
_glfwWin.mouseUPP = NULL;
_glfwWin.keyboardUPP = NULL;
_glfwWin.commandUPP = NULL;
_glfwWin.window = NULL;
_glfwWin.aglContext = NULL;
_glfwWin.aglPixelFormat = NULL;
_glfwWin.cglContext = NULL;
_glfwWin.cglPixelFormat = NULL;
_glfwWin.refreshRate = wndconfig->refreshRate;
// Fail if OpenGL 3.0 or above was requested
if( wndconfig->glMajor > 2 )
{
fprintf( stderr, "OpenGL 3.0+ is not yet supported on Mac OS X\n" );
_glfwPlatformCloseWindow();
return GL_FALSE;
}
if( _glfwLibrary.Unbundled )
{
if( GetCurrentProcess( &psn ) != noErr )
{
fprintf( stderr, "Failed to get the process serial number\n" );
_glfwPlatformCloseWindow();
return GL_FALSE;
}
if( TransformProcessType( &psn, kProcessTransformToForegroundApplication ) != noErr )
{
fprintf( stderr, "Failed to become a foreground application\n" );
_glfwPlatformCloseWindow();
return GL_FALSE;
}
if( wndconfig->mode == GLFW_FULLSCREEN )
{
if( SetFrontProcess( &psn ) != noErr )
{
fprintf( stderr, "Failed to become the front process\n" );
_glfwPlatformCloseWindow();
return GL_FALSE;
}
}
}
if( !installEventHandlers() )
{
fprintf( stderr,
"Failed to install Carbon application event handlers\n" );
_glfwPlatformTerminate();
return GL_FALSE;
}
// Windowed or fullscreen; AGL or CGL? Quite the mess...
// AGL appears to be the only choice for attaching OpenGL contexts to
// Carbon windows, but it leaves the user no control over fullscreen
// mode stretching. Solution: AGL for windowed, CGL for fullscreen.
if( wndconfig->mode == GLFW_WINDOW )
{
// create AGL pixel format attribute list
GLint AGLpixelFormatAttributes[256];
int numAGLAttrs = 0;
AGLpixelFormatAttributes[numAGLAttrs++] = AGL_RGBA;
AGLpixelFormatAttributes[numAGLAttrs++] = AGL_DOUBLEBUFFER;
AGLpixelFormatAttributes[numAGLAttrs++] = AGL_CLOSEST_POLICY;
if( fbconfig->stereo )
{
AGLpixelFormatAttributes[numAGLAttrs++] = AGL_STEREO;
}
_setAGLAttribute( AGL_AUX_BUFFERS, fbconfig->auxBuffers);
_setAGLAttribute( AGL_RED_SIZE, fbconfig->redBits );
_setAGLAttribute( AGL_GREEN_SIZE, fbconfig->greenBits );
_setAGLAttribute( AGL_BLUE_SIZE, fbconfig->blueBits );
_setAGLAttribute( AGL_ALPHA_SIZE, fbconfig->alphaBits );
_setAGLAttribute( AGL_DEPTH_SIZE, fbconfig->depthBits );
_setAGLAttribute( AGL_STENCIL_SIZE, fbconfig->stencilBits );
_setAGLAttribute( AGL_ACCUM_RED_SIZE, fbconfig->accumRedBits );
_setAGLAttribute( AGL_ACCUM_GREEN_SIZE, fbconfig->accumGreenBits );
_setAGLAttribute( AGL_ACCUM_BLUE_SIZE, fbconfig->accumBlueBits );
_setAGLAttribute( AGL_ACCUM_ALPHA_SIZE, fbconfig->accumAlphaBits );
if( fbconfig->samples > 1 )
{
_setAGLAttribute( AGL_SAMPLE_BUFFERS_ARB, 1 );
_setAGLAttribute( AGL_SAMPLES_ARB, fbconfig->samples );
AGLpixelFormatAttributes[numAGLAttrs++] = AGL_NO_RECOVERY;
}
AGLpixelFormatAttributes[numAGLAttrs++] = AGL_NONE;
// create pixel format descriptor
AGLDevice mainMonitor = GetMainDevice();
_glfwWin.aglPixelFormat = aglChoosePixelFormat( &mainMonitor,
1,
AGLpixelFormatAttributes );
if( _glfwWin.aglPixelFormat == NULL )
{
fprintf( stderr,
"Failed to choose AGL pixel format: %s\n",
aglErrorString( aglGetError() ) );
_glfwPlatformCloseWindow();
return GL_FALSE;
}
// create AGL context
_glfwWin.aglContext = aglCreateContext( _glfwWin.aglPixelFormat, NULL );
if( _glfwWin.aglContext == NULL )
{
fprintf( stderr,
"Failed to create AGL context: %s\n",
aglErrorString( aglGetError() ) );
_glfwPlatformCloseWindow();
return GL_FALSE;
}
// create window
Rect windowContentBounds;
windowContentBounds.left = 0;
windowContentBounds.top = 0;
windowContentBounds.right = width;
windowContentBounds.bottom = height;
windowAttributes = ( kWindowCloseBoxAttribute |
kWindowCollapseBoxAttribute |
kWindowStandardHandlerAttribute );
if( wndconfig->windowNoResize )
{
windowAttributes |= kWindowLiveResizeAttribute;
}
else
{
windowAttributes |= ( kWindowFullZoomAttribute |
kWindowResizableAttribute );
}
error = CreateNewWindow( kDocumentWindowClass,
windowAttributes,
&windowContentBounds,
&( _glfwWin.window ) );
if( ( error != noErr ) || ( _glfwWin.window == NULL ) )
{
fprintf( stderr, "Failed to create Carbon window\n" );
_glfwPlatformCloseWindow();
return GL_FALSE;
}
_glfwWin.windowUPP = NewEventHandlerUPP( windowEventHandler );
error = InstallWindowEventHandler( _glfwWin.window,
_glfwWin.windowUPP,
GetEventTypeCount( GLFW_WINDOW_EVENT_TYPES ),
GLFW_WINDOW_EVENT_TYPES,
NULL,
NULL );
if( error != noErr )
{
fprintf( stderr, "Failed to install Carbon window event handler\n" );
_glfwPlatformCloseWindow();
return GL_FALSE;
}
// Don't care if we fail here
(void)SetWindowTitleWithCFString( _glfwWin.window, CFSTR( "GLFW Window" ) );
(void)RepositionWindow( _glfwWin.window,
NULL,
kWindowCenterOnMainScreen );
if( !aglSetDrawable( _glfwWin.aglContext,
GetWindowPort( _glfwWin.window ) ) )
{
fprintf( stderr,
"Failed to set the AGL context as the Carbon window drawable: %s\n",
aglErrorString( aglGetError() ) );
_glfwPlatformCloseWindow();
return GL_FALSE;
}
// Make OpenGL context current
if( !aglSetCurrentContext( _glfwWin.aglContext ) )
{
fprintf( stderr,
"Failed to make AGL context current: %s\n",
aglErrorString( aglGetError() ) );
_glfwPlatformCloseWindow();
return GL_FALSE;
}
ShowWindow( _glfwWin.window );
}
else
{
CGDisplayErr cgErr;
CGLError cglErr;
CFDictionaryRef optimalMode;
GLint numCGLvs = 0;
CGLPixelFormatAttribute CGLpixelFormatAttributes[64];
int numCGLAttrs = 0;
// variables for enumerating color depths
GLint rgbColorDepth;
// CGL pixel format attributes
_setCGLAttribute( kCGLPFADisplayMask,
CGDisplayIDToOpenGLDisplayMask( kCGDirectMainDisplay ) );
if( fbconfig->stereo )
{
CGLpixelFormatAttributes[ numCGLAttrs++ ] = kCGLPFAStereo;
}
if( fbconfig->samples > 1 )
{
_setCGLAttribute( kCGLPFASamples, (CGLPixelFormatAttribute)fbconfig->samples );
_setCGLAttribute( kCGLPFASampleBuffers, (CGLPixelFormatAttribute)1 );
CGLpixelFormatAttributes[ numCGLAttrs++ ] = kCGLPFANoRecovery;
}
CGLpixelFormatAttributes[ numCGLAttrs++ ] = kCGLPFAFullScreen;
CGLpixelFormatAttributes[ numCGLAttrs++ ] = kCGLPFADoubleBuffer;
CGLpixelFormatAttributes[ numCGLAttrs++ ] = kCGLPFAAccelerated;
CGLpixelFormatAttributes[ numCGLAttrs++ ] = kCGLPFANoRecovery;
CGLpixelFormatAttributes[ numCGLAttrs++ ] = kCGLPFAMinimumPolicy;
_setCGLAttribute( kCGLPFAAccumSize,
(CGLPixelFormatAttribute)( fbconfig->accumRedBits \
+ fbconfig->accumGreenBits \
+ fbconfig->accumBlueBits \
+ fbconfig->accumAlphaBits ) );
_setCGLAttribute( kCGLPFAAlphaSize, (CGLPixelFormatAttribute)fbconfig->alphaBits );
_setCGLAttribute( kCGLPFADepthSize, (CGLPixelFormatAttribute)fbconfig->depthBits );
_setCGLAttribute( kCGLPFAStencilSize, (CGLPixelFormatAttribute)fbconfig->stencilBits );
_setCGLAttribute( kCGLPFAAuxBuffers, (CGLPixelFormatAttribute)fbconfig->auxBuffers );
CGLpixelFormatAttributes[ numCGLAttrs++ ] = (CGLPixelFormatAttribute)NULL;
// create a suitable pixel format with above attributes..
cglErr = CGLChoosePixelFormat( CGLpixelFormatAttributes,
&_glfwWin.cglPixelFormat,
&numCGLvs );
if( cglErr != kCGLNoError )
{
fprintf( stderr,
"Failed to choose CGL pixel format: %s\n",
CGLErrorString( cglErr ) );
_glfwPlatformCloseWindow();
return GL_FALSE;
}
// ..and create a rendering context using that pixel format
cglErr = CGLCreateContext( _glfwWin.cglPixelFormat, NULL, &_glfwWin.cglContext );
if( cglErr != kCGLNoError )
{
fprintf( stderr,
"Failed to create CGL context: %s\n",
CGLErrorString( cglErr ) );
_glfwPlatformCloseWindow();
return GL_FALSE;
}
// enumerate depth of RGB channels - unlike AGL, CGL works with
// a single parameter reflecting the full depth of the frame buffer
(void)CGLDescribePixelFormat( _glfwWin.cglPixelFormat,
0,
kCGLPFAColorSize,
&rgbColorDepth );
// capture the display for our application
cgErr = CGCaptureAllDisplays();
if( cgErr != kCGErrorSuccess )
{
fprintf( stderr,
"Failed to capture Core Graphics displays\n");
_glfwPlatformCloseWindow();
return GL_FALSE;
}
// find closest matching NON-STRETCHED display mode..
optimalMode = CGDisplayBestModeForParametersAndRefreshRateWithProperty(
kCGDirectMainDisplay,
rgbColorDepth,
width,
height,
wndconfig->refreshRate,
NULL,
NULL );
if( optimalMode == NULL )
{
fprintf( stderr,
"Failed to retrieve Core Graphics display mode\n");
_glfwPlatformCloseWindow();
return GL_FALSE;
}
// ..and switch to that mode
cgErr = CGDisplaySwitchToMode( kCGDirectMainDisplay, optimalMode );
if( cgErr != kCGErrorSuccess )
{
fprintf( stderr,
"Failed to switch to Core Graphics display mode\n");
_glfwPlatformCloseWindow();
return GL_FALSE;
}
// switch to our OpenGL context, and bring it up fullscreen
cglErr = CGLSetCurrentContext( _glfwWin.cglContext );
if( cglErr != kCGLNoError )
{
fprintf( stderr,
"Failed to make CGL context current: %s\n",
CGLErrorString( cglErr ) );
_glfwPlatformCloseWindow();
return GL_FALSE;
}
cglErr = CGLSetFullScreen( _glfwWin.cglContext );
if( cglErr != kCGLNoError )
{
fprintf( stderr,
"Failed to set CGL fullscreen mode: %s\n",
CGLErrorString( cglErr ) );
_glfwPlatformCloseWindow();
return GL_FALSE;
}
}
return GL_TRUE;
}