--- /dev/null
+//========================================================================
+// 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.
+//
+//========================================================================
+// It is fine to use C99 in this file because it will not be built with VS
+//========================================================================
+
+#include "internal.h"
+
+#include <unistd.h>
+#include <math.h>
+
+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 {
+
+ // HACK: Simulate vsync with usleep as NSGL swap interval does not apply to
+ // windows with a non-visible occlusion state
+ if (window->ns.occluded)
+ {
+ int interval = 0;
+ [window->context.nsgl.object getValues:&interval
+ forParameter:NSOpenGLContextParameterSwapInterval];
+
+ if (interval > 0)
+ {
+ const double framerate = 60.0;
+ const uint64_t frequency = _glfwPlatformGetTimerFrequency();
+ const uint64_t value = _glfwPlatformGetTimerValue();
+
+ const double elapsed = value / (double) frequency;
+ const double period = 1.0 / framerate;
+ const double delay = period - fmod(elapsed, period);
+
+ usleep(floorl(delay * 1e6));
+ }
+ }
+
+ [window->context.nsgl.object flushBuffer];
+
+ } // autoreleasepool
+}
+
+static void swapIntervalNSGL(int interval)
+{
+ @autoreleasepool {
+
+ _GLFWwindow* window = _glfwPlatformGetTls(&_glfw.contextSlot);
+ if (window)
+ {
+ [window->context.nsgl.object setValues:&interval
+ forParameter:NSOpenGLContextParameterSwapInterval];
+ }
+
+ } // 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;
+}
+
+static void destroyContextNSGL(_GLFWwindow* window)
+{
+ @autoreleasepool {
+
+ [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;
+ }
+ }
+
+ // 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 = nil;
+
+ 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];
+ }
+
+ [window->ns.view setWantsBestResolutionOpenGLSurface:window->ns.retina];
+
+ [window->context.nsgl.object setView:window->ns.view];
+
+ window->context.makeCurrent = makeContextCurrentNSGL;
+ window->context.swapBuffers = swapBuffersNSGL;
+ window->context.swapInterval = swapIntervalNSGL;
+ window->context.extensionSupported = extensionSupportedNSGL;
+ window->context.getProcAddress = getProcAddressNSGL;
+ window->context.destroy = destroyContextNSGL;
+
+ return GLFW_TRUE;
+}
+
+
+//////////////////////////////////////////////////////////////////////////
+////// 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 nil;
+ }
+
+ return window->context.nsgl.object;
+}
+
projects / pistorm / blobdiff