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Diffstat (limited to 'src/mac_gl.m')
| -rw-r--r-- | src/mac_gl.m | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/src/mac_gl.m b/src/mac_gl.m new file mode 100644 index 0000000..038b942 --- /dev/null +++ b/src/mac_gl.m @@ -0,0 +1,203 @@ +/* + Copyright 2019-2020 David Robillard <d@drobilla.net> + + Permission to use, copy, modify, and/or distribute this software for any + purpose with or without fee is hereby granted, provided that the above + copyright notice and this permission notice appear in all copies. + + THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. +*/ + +/** + @file mac_gl.m + @brief OpenGL graphics backend for MacOS. +*/ + +#include "implementation.h" +#include "mac.h" +#include "stub.h" + +#include "pugl/pugl_gl.h" + +#ifndef __MAC_10_10 +# define NSOpenGLProfileVersion4_1Core NSOpenGLProfileVersion3_2Core +#endif + +@interface PuglOpenGLView : NSOpenGLView +@end + +@implementation PuglOpenGLView +{ +@public + PuglView* puglview; +} + +- (id)initWithFrame:(NSRect)frame +{ + const bool compat = puglview->hints[PUGL_USE_COMPAT_PROFILE]; + const unsigned samples = (unsigned)puglview->hints[PUGL_SAMPLES]; + const int major = puglview->hints[PUGL_CONTEXT_VERSION_MAJOR]; + const unsigned profile = ((compat || major < 3) + ? NSOpenGLProfileVersionLegacy + : (major >= 4 + ? NSOpenGLProfileVersion4_1Core + : NSOpenGLProfileVersion3_2Core)); + + // Set attributes to default if they are unset + // (There is no GLX_DONT_CARE equivalent on MacOS) + if (puglview->hints[PUGL_DEPTH_BITS] == PUGL_DONT_CARE) { + puglview->hints[PUGL_DEPTH_BITS] = 0; + } + if (puglview->hints[PUGL_STENCIL_BITS] == PUGL_DONT_CARE) { + puglview->hints[PUGL_STENCIL_BITS] = 0; + } + if (puglview->hints[PUGL_SAMPLES] == PUGL_DONT_CARE) { + puglview->hints[PUGL_SAMPLES] = 1; + } + if (puglview->hints[PUGL_DOUBLE_BUFFER] == PUGL_DONT_CARE) { + puglview->hints[PUGL_DOUBLE_BUFFER] = 1; + } + if (puglview->hints[PUGL_SWAP_INTERVAL] == PUGL_DONT_CARE) { + puglview->hints[PUGL_SWAP_INTERVAL] = 1; + } + + const unsigned colorSize = (unsigned)(puglview->hints[PUGL_RED_BITS] + + puglview->hints[PUGL_BLUE_BITS] + + puglview->hints[PUGL_GREEN_BITS] + + puglview->hints[PUGL_ALPHA_BITS]); + + NSOpenGLPixelFormatAttribute pixelAttribs[17] = { + NSOpenGLPFADoubleBuffer, + NSOpenGLPFAAccelerated, + NSOpenGLPFAOpenGLProfile, profile, + NSOpenGLPFAColorSize, colorSize, + NSOpenGLPFADepthSize, (unsigned)puglview->hints[PUGL_DEPTH_BITS], + NSOpenGLPFAStencilSize, (unsigned)puglview->hints[PUGL_STENCIL_BITS], + NSOpenGLPFAMultisample, samples ? 1 : 0, + NSOpenGLPFASampleBuffers, samples ? 1 : 0, + NSOpenGLPFASamples, samples, + 0}; + + NSOpenGLPixelFormat* pixelFormat = [ + [NSOpenGLPixelFormat alloc] initWithAttributes:pixelAttribs]; + + if (pixelFormat) { + self = [super initWithFrame:frame pixelFormat:pixelFormat]; + [pixelFormat release]; + } else { + self = [super initWithFrame:frame]; + } + + [self setWantsBestResolutionOpenGLSurface:YES]; + + if (self) { + [[self openGLContext] makeCurrentContext]; + [self reshape]; + } + return self; +} + +- (void)reshape +{ + PuglWrapperView* wrapper = (PuglWrapperView*)[self superview]; + + [super reshape]; + [wrapper setReshaped]; +} + +- (void)drawRect:(NSRect)rect +{ + PuglWrapperView* wrapper = (PuglWrapperView*)[self superview]; + [wrapper dispatchExpose:rect]; +} + +@end + +static PuglStatus +puglMacGlCreate(PuglView* view) +{ + PuglInternals* impl = view->impl; + PuglOpenGLView* drawView = [PuglOpenGLView alloc]; + + drawView->puglview = view; + [drawView initWithFrame:[impl->wrapperView bounds]]; + if (view->hints[PUGL_RESIZABLE]) { + [drawView setAutoresizingMask:NSViewWidthSizable | NSViewHeightSizable]; + } else { + [drawView setAutoresizingMask:NSViewNotSizable]; + } + + impl->drawView = drawView; + return PUGL_SUCCESS; +} + +static PuglStatus +puglMacGlDestroy(PuglView* view) +{ + PuglOpenGLView* const drawView = (PuglOpenGLView*)view->impl->drawView; + + [drawView removeFromSuperview]; + [drawView release]; + + view->impl->drawView = nil; + return PUGL_SUCCESS; +} + +static PuglStatus +puglMacGlEnter(PuglView* view, const PuglEventExpose* PUGL_UNUSED(expose)) +{ + PuglOpenGLView* const drawView = (PuglOpenGLView*)view->impl->drawView; + + [[drawView openGLContext] makeCurrentContext]; + return PUGL_SUCCESS; +} + +static PuglStatus +puglMacGlLeave(PuglView* view, const PuglEventExpose* expose) +{ + PuglOpenGLView* const drawView = (PuglOpenGLView*)view->impl->drawView; + + if (expose) { + [[drawView openGLContext] flushBuffer]; + } + + [NSOpenGLContext clearCurrentContext]; + + return PUGL_SUCCESS; +} + +PuglGlFunc +puglGetProcAddress(const char *name) +{ + CFBundleRef framework = + CFBundleGetBundleWithIdentifier(CFSTR("com.apple.opengl")); + + CFStringRef symbol = CFStringCreateWithCString( + kCFAllocatorDefault, name, kCFStringEncodingASCII); + + PuglGlFunc func = (PuglGlFunc)CFBundleGetFunctionPointerForName( + framework, symbol); + + CFRelease(symbol); + + return func; +} + +const PuglBackend* +puglGlBackend(void) +{ + static const PuglBackend backend = {puglStubConfigure, + puglMacGlCreate, + puglMacGlDestroy, + puglMacGlEnter, + puglMacGlLeave, + puglStubGetContext}; + + return &backend; +} |