mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-12-27 04:08:53 +01:00
353 lines
10 KiB
Objective-C
353 lines
10 KiB
Objective-C
// SPDX-License-Identifier: Apache-2.0
|
|
// SPDX-FileCopyrightText: 2009-2019 Camilla Löwy <elmindreda@glfw.org>
|
|
// SPDX-FileCopyrightText: 2023 The Ebitengine Authors
|
|
|
|
#include "internal_unix.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;
|
|
}
|
|
|
|
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 = 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.source != GLFW_NATIVE_CONTEXT_API)
|
|
{
|
|
_glfwInputError(GLFW_NO_WINDOW_CONTEXT, NULL);
|
|
return nil;
|
|
}
|
|
|
|
return window->context.nsgl.object;
|
|
}
|
|
|