mirror of
https://github.com/gwm17/glfw.git
synced 2024-11-23 10:48:51 -05:00
421 lines
13 KiB
Objective-C
421 lines
13 KiB
Objective-C
//========================================================================
|
|
// GLFW 3.4 macOS - www.glfw.org
|
|
//------------------------------------------------------------------------
|
|
// Copyright (c) 2009-2019 Camilla Löwy <elmindreda@glfw.org>
|
|
//
|
|
// This software is provided 'as-is', without any express or implied
|
|
// warranty. In no event will the authors be held liable for any damages
|
|
// arising from the use of this software.
|
|
//
|
|
// Permission is granted to anyone to use this software for any purpose,
|
|
// including commercial applications, and to alter it and redistribute it
|
|
// freely, subject to the following restrictions:
|
|
//
|
|
// 1. The origin of this software must not be misrepresented; you must not
|
|
// claim that you wrote the original software. If you use this software
|
|
// in a product, an acknowledgment in the product documentation would
|
|
// be appreciated but is not required.
|
|
//
|
|
// 2. Altered source versions must be plainly marked as such, and must not
|
|
// be misrepresented as being the original software.
|
|
//
|
|
// 3. This notice may not be removed or altered from any source
|
|
// distribution.
|
|
//
|
|
//========================================================================
|
|
|
|
#include "internal.h"
|
|
|
|
// Display link callback for manual swap interval implementation
|
|
// This is based on a similar workaround added to SDL2
|
|
//
|
|
static CVReturn displayLinkCallback(CVDisplayLinkRef displayLink,
|
|
const CVTimeStamp* now,
|
|
const CVTimeStamp* outputTime,
|
|
CVOptionFlags flagsIn,
|
|
CVOptionFlags* flagsOut,
|
|
void* userInfo)
|
|
{
|
|
_GLFWwindow* window = (_GLFWwindow *) userInfo;
|
|
|
|
const int interval = atomic_load(&window->context.nsgl.swapInterval);
|
|
if (interval > 0)
|
|
{
|
|
[window->context.nsgl.swapIntervalCond lock];
|
|
window->context.nsgl.swapIntervalsPassed++;
|
|
[window->context.nsgl.swapIntervalCond signal];
|
|
[window->context.nsgl.swapIntervalCond unlock];
|
|
}
|
|
|
|
return kCVReturnSuccess;
|
|
}
|
|
|
|
static void makeContextCurrentNSGL(_GLFWwindow* window)
|
|
{
|
|
@autoreleasepool {
|
|
|
|
if (window)
|
|
[window->context.nsgl.object makeCurrentContext];
|
|
else
|
|
[NSOpenGLContext clearCurrentContext];
|
|
|
|
_glfwPlatformSetTls(&_glfw.contextSlot, window);
|
|
|
|
} // autoreleasepool
|
|
}
|
|
|
|
static void swapBuffersNSGL(_GLFWwindow* window)
|
|
{
|
|
@autoreleasepool {
|
|
|
|
const int interval = atomic_load(&window->context.nsgl.swapInterval);
|
|
if (interval > 0)
|
|
{
|
|
[window->context.nsgl.swapIntervalCond lock];
|
|
do
|
|
{
|
|
[window->context.nsgl.swapIntervalCond wait];
|
|
} while (window->context.nsgl.swapIntervalsPassed % interval != 0);
|
|
window->context.nsgl.swapIntervalsPassed = 0;
|
|
[window->context.nsgl.swapIntervalCond unlock];
|
|
}
|
|
|
|
// ARP appears to be unnecessary, but this is future-proof
|
|
[window->context.nsgl.object flushBuffer];
|
|
|
|
} // autoreleasepool
|
|
}
|
|
|
|
static void swapIntervalNSGL(int interval)
|
|
{
|
|
@autoreleasepool {
|
|
_GLFWwindow* window = _glfwPlatformGetTls(&_glfw.contextSlot);
|
|
atomic_store(&window->context.nsgl.swapInterval, interval);
|
|
[window->context.nsgl.swapIntervalCond lock];
|
|
window->context.nsgl.swapIntervalsPassed = 0;
|
|
[window->context.nsgl.swapIntervalCond unlock];
|
|
} // autoreleasepool
|
|
}
|
|
|
|
static int extensionSupportedNSGL(const char* extension)
|
|
{
|
|
// There are no NSGL extensions
|
|
return GLFW_FALSE;
|
|
}
|
|
|
|
static GLFWglproc getProcAddressNSGL(const char* procname)
|
|
{
|
|
CFStringRef symbolName = CFStringCreateWithCString(kCFAllocatorDefault,
|
|
procname,
|
|
kCFStringEncodingASCII);
|
|
|
|
GLFWglproc symbol = CFBundleGetFunctionPointerForName(_glfw.nsgl.framework,
|
|
symbolName);
|
|
|
|
CFRelease(symbolName);
|
|
|
|
return symbol;
|
|
}
|
|
|
|
// Destroy the OpenGL context
|
|
//
|
|
static void destroyContextNSGL(_GLFWwindow* window)
|
|
{
|
|
@autoreleasepool {
|
|
|
|
if (window->context.nsgl.displayLink)
|
|
{
|
|
if (CVDisplayLinkIsRunning(window->context.nsgl.displayLink))
|
|
CVDisplayLinkStop(window->context.nsgl.displayLink);
|
|
|
|
CVDisplayLinkRelease(window->context.nsgl.displayLink);
|
|
}
|
|
|
|
[window->context.nsgl.swapIntervalCond release];
|
|
window->context.nsgl.swapIntervalCond = nil;
|
|
|
|
[window->context.nsgl.pixelFormat release];
|
|
window->context.nsgl.pixelFormat = nil;
|
|
|
|
[window->context.nsgl.object release];
|
|
window->context.nsgl.object = nil;
|
|
|
|
} // autoreleasepool
|
|
}
|
|
|
|
|
|
//////////////////////////////////////////////////////////////////////////
|
|
////// GLFW internal API //////
|
|
//////////////////////////////////////////////////////////////////////////
|
|
|
|
// Initialize OpenGL support
|
|
//
|
|
GLFWbool _glfwInitNSGL(void)
|
|
{
|
|
if (_glfw.nsgl.framework)
|
|
return GLFW_TRUE;
|
|
|
|
_glfw.nsgl.framework =
|
|
CFBundleGetBundleWithIdentifier(CFSTR("com.apple.opengl"));
|
|
if (_glfw.nsgl.framework == NULL)
|
|
{
|
|
_glfwInputError(GLFW_API_UNAVAILABLE,
|
|
"NSGL: Failed to locate OpenGL framework");
|
|
return GLFW_FALSE;
|
|
}
|
|
|
|
return GLFW_TRUE;
|
|
}
|
|
|
|
// Terminate OpenGL support
|
|
//
|
|
void _glfwTerminateNSGL(void)
|
|
{
|
|
}
|
|
|
|
// Create the OpenGL context
|
|
//
|
|
GLFWbool _glfwCreateContextNSGL(_GLFWwindow* window,
|
|
const _GLFWctxconfig* ctxconfig,
|
|
const _GLFWfbconfig* fbconfig)
|
|
{
|
|
if (ctxconfig->client == GLFW_OPENGL_ES_API)
|
|
{
|
|
_glfwInputError(GLFW_API_UNAVAILABLE,
|
|
"NSGL: OpenGL ES is not available on macOS");
|
|
return GLFW_FALSE;
|
|
}
|
|
|
|
if (ctxconfig->major > 2)
|
|
{
|
|
if (ctxconfig->major == 3 && ctxconfig->minor < 2)
|
|
{
|
|
_glfwInputError(GLFW_VERSION_UNAVAILABLE,
|
|
"NSGL: The targeted version of macOS does not support OpenGL 3.0 or 3.1 but may support 3.2 and above");
|
|
return GLFW_FALSE;
|
|
}
|
|
|
|
if (!ctxconfig->forward || ctxconfig->profile != GLFW_OPENGL_CORE_PROFILE)
|
|
{
|
|
_glfwInputError(GLFW_VERSION_UNAVAILABLE,
|
|
"NSGL: The targeted version of macOS only supports forward-compatible core profile contexts for OpenGL 3.2 and above");
|
|
return GLFW_FALSE;
|
|
}
|
|
}
|
|
|
|
// Context robustness modes (GL_KHR_robustness) are not yet supported by
|
|
// macOS but are not a hard constraint, so ignore and continue
|
|
|
|
// Context release behaviors (GL_KHR_context_flush_control) are not yet
|
|
// supported by macOS but are not a hard constraint, so ignore and continue
|
|
|
|
// Debug contexts (GL_KHR_debug) are not yet supported by macOS but are not
|
|
// a hard constraint, so ignore and continue
|
|
|
|
// No-error contexts (GL_KHR_no_error) are not yet supported by macOS but
|
|
// are not a hard constraint, so ignore and continue
|
|
|
|
#define addAttrib(a) \
|
|
{ \
|
|
assert((size_t) index < sizeof(attribs) / sizeof(attribs[0])); \
|
|
attribs[index++] = a; \
|
|
}
|
|
#define setAttrib(a, v) { addAttrib(a); addAttrib(v); }
|
|
|
|
NSOpenGLPixelFormatAttribute attribs[40];
|
|
int index = 0;
|
|
|
|
addAttrib(NSOpenGLPFAAccelerated);
|
|
addAttrib(NSOpenGLPFAClosestPolicy);
|
|
|
|
if (ctxconfig->nsgl.offline)
|
|
{
|
|
addAttrib(NSOpenGLPFAAllowOfflineRenderers);
|
|
// NOTE: This replaces the NSSupportsAutomaticGraphicsSwitching key in
|
|
// Info.plist for unbundled applications
|
|
// HACK: This assumes that NSOpenGLPixelFormat will remain
|
|
// a straightforward wrapper of its CGL counterpart
|
|
addAttrib(kCGLPFASupportsAutomaticGraphicsSwitching);
|
|
}
|
|
|
|
#if MAC_OS_X_VERSION_MAX_ALLOWED >= 101000
|
|
if (ctxconfig->major >= 4)
|
|
{
|
|
setAttrib(NSOpenGLPFAOpenGLProfile, NSOpenGLProfileVersion4_1Core);
|
|
}
|
|
else
|
|
#endif /*MAC_OS_X_VERSION_MAX_ALLOWED*/
|
|
if (ctxconfig->major >= 3)
|
|
{
|
|
setAttrib(NSOpenGLPFAOpenGLProfile, NSOpenGLProfileVersion3_2Core);
|
|
}
|
|
|
|
if (ctxconfig->major <= 2)
|
|
{
|
|
if (fbconfig->auxBuffers != GLFW_DONT_CARE)
|
|
setAttrib(NSOpenGLPFAAuxBuffers, fbconfig->auxBuffers);
|
|
|
|
if (fbconfig->accumRedBits != GLFW_DONT_CARE &&
|
|
fbconfig->accumGreenBits != GLFW_DONT_CARE &&
|
|
fbconfig->accumBlueBits != GLFW_DONT_CARE &&
|
|
fbconfig->accumAlphaBits != GLFW_DONT_CARE)
|
|
{
|
|
const int accumBits = fbconfig->accumRedBits +
|
|
fbconfig->accumGreenBits +
|
|
fbconfig->accumBlueBits +
|
|
fbconfig->accumAlphaBits;
|
|
|
|
setAttrib(NSOpenGLPFAAccumSize, accumBits);
|
|
}
|
|
}
|
|
|
|
if (fbconfig->redBits != GLFW_DONT_CARE &&
|
|
fbconfig->greenBits != GLFW_DONT_CARE &&
|
|
fbconfig->blueBits != GLFW_DONT_CARE)
|
|
{
|
|
int colorBits = fbconfig->redBits +
|
|
fbconfig->greenBits +
|
|
fbconfig->blueBits;
|
|
|
|
// macOS needs non-zero color size, so set reasonable values
|
|
if (colorBits == 0)
|
|
colorBits = 24;
|
|
else if (colorBits < 15)
|
|
colorBits = 15;
|
|
|
|
setAttrib(NSOpenGLPFAColorSize, colorBits);
|
|
}
|
|
|
|
if (fbconfig->alphaBits != GLFW_DONT_CARE)
|
|
setAttrib(NSOpenGLPFAAlphaSize, fbconfig->alphaBits);
|
|
|
|
if (fbconfig->depthBits != GLFW_DONT_CARE)
|
|
setAttrib(NSOpenGLPFADepthSize, fbconfig->depthBits);
|
|
|
|
if (fbconfig->stencilBits != GLFW_DONT_CARE)
|
|
setAttrib(NSOpenGLPFAStencilSize, fbconfig->stencilBits);
|
|
|
|
if (fbconfig->stereo)
|
|
{
|
|
#if MAC_OS_X_VERSION_MAX_ALLOWED >= 101200
|
|
_glfwInputError(GLFW_FORMAT_UNAVAILABLE,
|
|
"NSGL: Stereo rendering is deprecated");
|
|
return GLFW_FALSE;
|
|
#else
|
|
addAttrib(NSOpenGLPFAStereo);
|
|
#endif
|
|
}
|
|
|
|
if (fbconfig->doublebuffer)
|
|
addAttrib(NSOpenGLPFADoubleBuffer);
|
|
|
|
if (fbconfig->samples != GLFW_DONT_CARE)
|
|
{
|
|
if (fbconfig->samples == 0)
|
|
{
|
|
setAttrib(NSOpenGLPFASampleBuffers, 0);
|
|
}
|
|
else
|
|
{
|
|
setAttrib(NSOpenGLPFASampleBuffers, 1);
|
|
setAttrib(NSOpenGLPFASamples, fbconfig->samples);
|
|
}
|
|
}
|
|
|
|
// NOTE: All NSOpenGLPixelFormats on the relevant cards support sRGB
|
|
// framebuffer, so there's no need (and no way) to request it
|
|
|
|
addAttrib(0);
|
|
|
|
#undef addAttrib
|
|
#undef setAttrib
|
|
|
|
window->context.nsgl.pixelFormat =
|
|
[[NSOpenGLPixelFormat alloc] initWithAttributes:attribs];
|
|
if (window->context.nsgl.pixelFormat == nil)
|
|
{
|
|
_glfwInputError(GLFW_FORMAT_UNAVAILABLE,
|
|
"NSGL: Failed to find a suitable pixel format");
|
|
return GLFW_FALSE;
|
|
}
|
|
|
|
NSOpenGLContext* share = NULL;
|
|
|
|
if (ctxconfig->share)
|
|
share = ctxconfig->share->context.nsgl.object;
|
|
|
|
window->context.nsgl.object =
|
|
[[NSOpenGLContext alloc] initWithFormat:window->context.nsgl.pixelFormat
|
|
shareContext:share];
|
|
if (window->context.nsgl.object == nil)
|
|
{
|
|
_glfwInputError(GLFW_VERSION_UNAVAILABLE,
|
|
"NSGL: Failed to create OpenGL context");
|
|
return GLFW_FALSE;
|
|
}
|
|
|
|
if (fbconfig->transparent)
|
|
{
|
|
GLint opaque = 0;
|
|
[window->context.nsgl.object setValues:&opaque
|
|
forParameter:NSOpenGLContextParameterSurfaceOpacity];
|
|
}
|
|
|
|
if (window->ns.retina)
|
|
[window->ns.view setWantsBestResolutionOpenGLSurface:YES];
|
|
|
|
GLint interval = 0;
|
|
[window->context.nsgl.object setValues:&interval
|
|
forParameter:NSOpenGLContextParameterSwapInterval];
|
|
|
|
[window->context.nsgl.object setView:window->ns.view];
|
|
|
|
window->context.nsgl.swapIntervalCond = [NSCondition new];
|
|
|
|
window->context.makeCurrent = makeContextCurrentNSGL;
|
|
window->context.swapBuffers = swapBuffersNSGL;
|
|
window->context.swapInterval = swapIntervalNSGL;
|
|
window->context.extensionSupported = extensionSupportedNSGL;
|
|
window->context.getProcAddress = getProcAddressNSGL;
|
|
window->context.destroy = destroyContextNSGL;
|
|
|
|
CVDisplayLinkCreateWithActiveCGDisplays(&window->context.nsgl.displayLink);
|
|
CVDisplayLinkSetOutputCallback(window->context.nsgl.displayLink,
|
|
&displayLinkCallback,
|
|
window);
|
|
CVDisplayLinkStart(window->context.nsgl.displayLink);
|
|
|
|
_glfwUpdateDisplayLinkDisplayNSGL(window);
|
|
return GLFW_TRUE;
|
|
}
|
|
|
|
void _glfwUpdateDisplayLinkDisplayNSGL(_GLFWwindow* window)
|
|
{
|
|
CGDirectDisplayID displayID =
|
|
[[[window->ns.object screen] deviceDescription][@"NSScreenNumber"] unsignedIntValue];
|
|
if (!displayID)
|
|
return;
|
|
|
|
CVDisplayLinkSetCurrentCGDisplay(window->context.nsgl.displayLink, displayID);
|
|
}
|
|
|
|
|
|
//////////////////////////////////////////////////////////////////////////
|
|
////// GLFW native API //////
|
|
//////////////////////////////////////////////////////////////////////////
|
|
|
|
GLFWAPI id glfwGetNSGLContext(GLFWwindow* handle)
|
|
{
|
|
_GLFWwindow* window = (_GLFWwindow*) handle;
|
|
_GLFW_REQUIRE_INIT_OR_RETURN(nil);
|
|
|
|
if (window->context.client == GLFW_NO_API)
|
|
{
|
|
_glfwInputError(GLFW_NO_WINDOW_CONTEXT, NULL);
|
|
return NULL;
|
|
}
|
|
|
|
return window->context.nsgl.object;
|
|
}
|
|
|