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#include "context_agl.h"
#include "../duckstation_compat.h"
#include "../log.h"
#include "loader.h"
#include <dlfcn.h>
Log_SetChannel(GL::ContextAGL);
namespace GL {
ContextAGL::ContextAGL(const WindowInfo& wi) : Context(wi)
{
m_opengl_module_handle = dlopen("/System/Library/Frameworks/OpenGL.framework/Versions/Current/OpenGL", RTLD_NOW);
if (!m_opengl_module_handle)
Log_ErrorPrint("Could not open OpenGL.framework, function lookups will probably fail");
}
ContextAGL::~ContextAGL()
{
if ([NSOpenGLContext currentContext] == m_context)
[NSOpenGLContext clearCurrentContext];
if (m_context)
[m_context release];
if (m_pixel_format)
[m_pixel_format release];
if (m_opengl_module_handle)
dlclose(m_opengl_module_handle);
}
std::unique_ptr<Context> ContextAGL::Create(const WindowInfo& wi, const Version* versions_to_try,
size_t num_versions_to_try)
{
std::unique_ptr<ContextAGL> context = std::make_unique<ContextAGL>(wi);
if (!context->Initialize(versions_to_try, num_versions_to_try))
return nullptr;
return context;
}
bool ContextAGL::Initialize(const Version* versions_to_try, size_t num_versions_to_try)
{
for (size_t i = 0; i < num_versions_to_try; i++)
{
const Version& cv = versions_to_try[i];
if (cv.profile == Profile::NoProfile && CreateContext(nullptr, NSOpenGLProfileVersionLegacy, true))
{
// we already have the dummy context, so just use that
m_version = cv;
return true;
}
else if (cv.profile == Profile::Core)
{
if (cv.major_version > 4 && cv.minor_version > 1)
continue;
const NSOpenGLPixelFormatAttribute profile = (cv.major_version > 3 || cv.minor_version > 2) ? NSOpenGLProfileVersion4_1Core : NSOpenGLProfileVersion3_2Core;
if (CreateContext(nullptr, static_cast<int>(profile), true))
{
m_version = cv;
return true;
}
}
}
return false;
}
void* ContextAGL::GetProcAddress(const char* name)
{
void* addr = m_opengl_module_handle ? dlsym(m_opengl_module_handle, name) : nullptr;
if (addr)
return addr;
return dlsym(RTLD_NEXT, name);
}
bool ContextAGL::ChangeSurface(const WindowInfo& new_wi)
{
m_wi = new_wi;
BindContextToView();
return true;
}
void ContextAGL::ResizeSurface(u32 new_surface_width /*= 0*/, u32 new_surface_height /*= 0*/)
{
UpdateDimensions();
}
bool ContextAGL::UpdateDimensions()
{
const NSSize window_size = [GetView() frame].size;
const CGFloat window_scale = [[GetView() window] backingScaleFactor];
const u32 new_width = static_cast<u32>(static_cast<CGFloat>(window_size.width) * window_scale);
const u32 new_height = static_cast<u32>(static_cast<CGFloat>(window_size.height) * window_scale);
if (m_wi.surface_width == new_width && m_wi.surface_height == new_height)
return false;
m_wi.surface_width = new_width;
m_wi.surface_height = new_height;
dispatch_block_t block = ^{
[m_context update];
};
if ([NSThread isMainThread])
block();
else
dispatch_sync(dispatch_get_main_queue(), block);
return true;
}
bool ContextAGL::SwapBuffers()
{
[m_context flushBuffer];
return true;
}
bool ContextAGL::MakeCurrent()
{
[m_context makeCurrentContext];
return true;
}
bool ContextAGL::DoneCurrent()
{
[NSOpenGLContext clearCurrentContext];
return true;
}
bool ContextAGL::SetSwapInterval(s32 interval)
{
GLint gl_interval = static_cast<GLint>(interval);
[m_context setValues:&gl_interval forParameter:NSOpenGLCPSwapInterval];
return true;
}
std::unique_ptr<Context> ContextAGL::CreateSharedContext(const WindowInfo& wi)
{
std::unique_ptr<ContextAGL> context = std::make_unique<ContextAGL>(wi);
context->m_context = [[NSOpenGLContext alloc] initWithFormat:m_pixel_format shareContext:m_context];
if (context->m_context == nil)
return nullptr;
context->m_version = m_version;
context->m_pixel_format = m_pixel_format;
[context->m_pixel_format retain];
if (wi.type == WindowInfo::Type::MacOS)
context->BindContextToView();
return context;
}
bool ContextAGL::CreateContext(NSOpenGLContext* share_context, int profile, bool make_current)
{
if (m_context)
{
[m_context release];
m_context = nullptr;
}
if (m_pixel_format)
[m_pixel_format release];
const std::array<NSOpenGLPixelFormatAttribute, 5> attribs = {{
NSOpenGLPFADoubleBuffer,
NSOpenGLPFAOpenGLProfile,
static_cast<NSOpenGLPixelFormatAttribute>(profile),
NSOpenGLPFAAccelerated,
0}};
m_pixel_format = [[NSOpenGLPixelFormat alloc] initWithAttributes:attribs.data()];
if (m_pixel_format == nil)
{
Log_ErrorPrintf("Failed to initialize pixel format");
return false;
}
m_context = [[NSOpenGLContext alloc] initWithFormat:m_pixel_format shareContext:nil];
if (m_context == nil)
return false;
if (m_wi.type == WindowInfo::Type::MacOS)
BindContextToView();
if (make_current)
[m_context makeCurrentContext];
return true;
}
void ContextAGL::BindContextToView()
{
NSView* const view = GetView();
NSWindow* const window = [view window];
[view setWantsBestResolutionOpenGLSurface:YES];
UpdateDimensions();
dispatch_block_t block = ^{
[window makeFirstResponder:view];
[m_context setView:view];
[window makeKeyAndOrderFront:nil];
};
if ([NSThread isMainThread])
block();
else
dispatch_sync(dispatch_get_main_queue(), block);
}
} // namespace GL
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