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Add pixelformat for cocoa and remove individual color components

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This commit is contained in:
Felix Kaaman 2015-04-30 15:41:21 +02:00
parent 735df1c7d8
commit 80c49856b2
2 changed files with 105 additions and 43 deletions
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142
src/api/cocoa/mod.rs
View file

@ -156,6 +156,7 @@ pub struct Window {
view: IdRef,
window: IdRef,
context: IdRef,
pixel_format: PixelFormat,
delegate: WindowDelegate,
}
@ -326,21 +327,23 @@ impl Window {
Some(app) => app,
None => { return Err(OsError(format!("Couldn't create NSApplication"))); },
};
let window = match Window::create_window(builder.dimensions.unwrap_or((800, 600)),
&*builder.title,
&builder.monitor)
let window = match Window::create_window(&builder)
{
Some(window) => window,
None => { return Err(OsError(format!("Couldn't create NSWindow"))); },
};
let view = match Window::create_view(*window) {
Some(view) => view,
None => { return Err(OsError(format!("Couldn't create NSView"))); },
};
let context = match Window::create_context(*view, &builder) {
Some(context) => context,
None => { return Err(OsError(format!("Couldn't create OpenGL context"))); },
// TODO: perhaps we should return error from create_context so we can
// determine the cause of failure and possibly recover?
let (context, pf) = match Window::create_context(*view, &builder) {
(Some(context), Some(pf)) => (context, pf),
(_, _) => { return Err(OsError(format!("Couldn't create OpenGL context"))); },
};
unsafe {
@ -365,6 +368,7 @@ impl Window {
view: view,
window: window,
context: context,
pixel_format: pf,
delegate: WindowDelegate::new(ds),
};
@ -384,9 +388,9 @@ impl Window {
}
}
fn create_window(dimensions: (u32, u32), title: &str, monitor: &Option<MonitorID>) -> Option<IdRef> {
fn create_window(builder: &BuilderAttribs) -> Option<IdRef> {
unsafe {
let screen = match *monitor {
let screen = match builder.monitor {
Some(ref monitor_id) => {
let native_id = match monitor_id.get_native_identifier() {
NativeMonitorId::Numeric(num) => num,
@ -418,7 +422,7 @@ impl Window {
let frame = match screen {
Some(screen) => NSScreen::frame(screen),
None => {
let (width, height) = dimensions;
let (width, height) = builder.dimensions.unwrap_or((800, 600));
NSRect::new(NSPoint::new(0., 0.), NSSize::new(width as f64, height as f64))
}
};
@ -439,7 +443,7 @@ impl Window {
NO,
));
window.non_nil().map(|window| {
let title = IdRef::new(NSString::alloc(nil).init_str(title));
let title = IdRef::new(NSString::alloc(nil).init_str(&builder.title));
window.setTitle_(*title);
window.setAcceptsMouseMovedEvents_(YES);
if screen.is_some() {
@ -464,7 +468,7 @@ impl Window {
}
}
fn create_context(view: id, builder: &BuilderAttribs) -> Option<IdRef> {
fn create_context(view: id, builder: &BuilderAttribs) -> (Option<IdRef>, Option<PixelFormat>) {
let profile = match builder.gl_version {
GlRequest::Latest => NSOpenGLProfileVersion4_1Core as u32,
GlRequest::Specific(Api::OpenGl, (1 ... 2, _)) => NSOpenGLProfileVersionLegacy as u32,
@ -477,39 +481,99 @@ impl Window {
GlRequest::GlThenGles { opengl_version: (3, 1 ... 2), .. } => NSOpenGLProfileVersion3_2Core as u32,
GlRequest::GlThenGles { .. } => NSOpenGLProfileVersion4_1Core as u32,
};
// NOTE: OS X no longer has the concept of setting individual
// color component's bit size. Instead we can only specify the
// full color size and hope for the best. Another hiccup is that
// `NSOpenGLPFAColorSize` also includes `NSOpenGLPFAAlphaSize`,
// so we have to account for that as well.
let alpha_depth = builder.alpha_bits.unwrap_or(8);
let color_depth = builder.color_bits.unwrap_or(24) + alpha_depth;
let mut attributes = vec![
NSOpenGLPFADoubleBuffer as u32,
NSOpenGLPFAClosestPolicy as u32,
NSOpenGLPFAColorSize as u32, color_depth as u32,
NSOpenGLPFAAlphaSize as u32, alpha_depth as u32,
NSOpenGLPFADepthSize as u32, builder.depth_bits.unwrap_or(24) as u32,
NSOpenGLPFAStencilSize as u32, builder.stencil_bits.unwrap_or(8) as u32,
NSOpenGLPFAOpenGLProfile as u32, profile,
];
// A color depth higher than 64 implies we're using either 16-bit
// floats or 32-bit floats and OS X requires a flag to be set
// accordingly.
if color_depth >= 64 {
attributes.push(NSOpenGLPFAColorFloat as u32);
}
builder.multisampling.map(|samples| {
attributes.push(NSOpenGLPFAMultisample as u32);
attributes.push(NSOpenGLPFASampleBuffers as u32); attributes.push(1);
attributes.push(NSOpenGLPFASamples as u32); attributes.push(samples as u32);
});
// attribute list must be null terminated.
attributes.push(0);
unsafe {
let mut attributes = vec![
NSOpenGLPFADoubleBuffer as u32,
NSOpenGLPFAClosestPolicy as u32,
NSOpenGLPFAColorSize as u32, 24,
NSOpenGLPFAAlphaSize as u32, 8,
NSOpenGLPFADepthSize as u32, 24,
NSOpenGLPFAStencilSize as u32, 8,
NSOpenGLPFAOpenGLProfile as u32, profile,
];
if let Some(samples) = builder.multisampling {
attributes = attributes + &[
NSOpenGLPFAMultisample as u32,
NSOpenGLPFASampleBuffers as u32, 1,
NSOpenGLPFASamples as u32, samples as u32,
];
}
attributes.push(0);
let pixelformat = IdRef::new(NSOpenGLPixelFormat::alloc(nil).initWithAttributes_(&attributes));
pixelformat.non_nil().map(|pixelformat| {
if let Some(pixelformat) = pixelformat.non_nil() {
// TODO: Add context sharing
let context = IdRef::new(NSOpenGLContext::alloc(nil).initWithFormat_shareContext_(*pixelformat, nil));
context.non_nil().map(|context| {
context.setView_(view);
if let Some(cxt) = context.non_nil() {
let pf = {
let getValues_forAttribute_forVirtualScreen_ = |fmt: id,
vals: *mut GLint,
attrib: NSOpenGLPixelFormatAttribute,
screen: GLint| -> () {
msg_send![fmt, getValues:vals forAttribute:attrib forVirtualScreen:screen]
};
let get_attr = |attrib: NSOpenGLPixelFormatAttribute| -> i32 {
let mut value = 0;
// TODO: Wait for servo/rust-cocoa/#85 to get merged
/*NSOpenGLPixelFormat::*/getValues_forAttribute_forVirtualScreen_(
*pixelformat,
&mut value,
attrib,
NSOpenGLContext::currentVirtualScreen(*cxt));
value
};
PixelFormat {
hardware_accelerated: get_attr(NSOpenGLPFAAccelerated) != 0,
color_bits: (get_attr(NSOpenGLPFAColorSize) - get_attr(NSOpenGLPFAAlphaSize)) as u8,
alpha_bits: get_attr(NSOpenGLPFAAlphaSize) as u8,
depth_bits: get_attr(NSOpenGLPFADepthSize) as u8,
stencil_bits: get_attr(NSOpenGLPFAStencilSize) as u8,
stereoscopy: get_attr(NSOpenGLPFAStereo) != 0,
double_buffer: get_attr(NSOpenGLPFADoubleBuffer) != 0,
multisampling: if get_attr(NSOpenGLPFAMultisample) > 0 {
Some(get_attr(NSOpenGLPFASamples) as u16)
} else {
None
},
srgb: true,
}
};
cxt.setView_(view);
if builder.vsync {
let value = 1;
context.setValues_forParameter_(&value, NSOpenGLContextParameter::NSOpenGLCPSwapInterval);
cxt.setValues_forParameter_(&value, NSOpenGLContextParameter::NSOpenGLCPSwapInterval);
}
context
})
}).unwrap_or(None)
(Some(cxt), Some(pf))
} else {
(None, None)
}
} else {
(None, None)
}
}
}
@ -654,7 +718,7 @@ impl Window {
}
pub fn get_pixel_format(&self) -> PixelFormat {
unimplemented!();
self.pixel_format.clone()
}
pub fn set_window_resize_callback(&mut self, callback: Option<fn(u32, u32)>) {

6
src/lib.rs
View file

@ -211,9 +211,7 @@ pub enum CursorState {
#[derive(Debug, Clone)]
pub struct PixelFormat {
pub hardware_accelerated: bool,
pub red_bits: u8,
pub green_bits: u8,
pub blue_bits: u8,
pub color_bits: u8,
pub alpha_bits: u8,
pub depth_bits: u8,
pub stencil_bits: u8,
@ -306,7 +304,7 @@ impl<'a> BuilderAttribs<'a> {
// TODO: do this more properly
for (id, format) in iter {
if format.red_bits + format.green_bits + format.blue_bits < self.color_bits.unwrap_or(0) {
if format.color_bits < self.color_bits.unwrap_or(0) {
continue;
}