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Remove now unneeded function

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Pierre Krieger 2015-12-19 14:36:49 +01:00
parent 4c9348ab50
commit ed1d76aaee
1 changed files with 0 additions and 104 deletions
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104
src/lib.rs
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@ -448,110 +448,6 @@ pub struct PixelFormatRequirements {
pub release_behavior: ReleaseBehavior,
}
impl PixelFormatRequirements {
#[cfg(not(target_os = "macos"))]
fn choose_pixel_format<T, I>(&self, iter: I) -> Result<(T, PixelFormat), CreationError>
where I: IntoIterator<Item=(T, PixelFormat)>, T: Clone
{
if self.release_behavior != ReleaseBehavior::Flush { return Err(CreationError::NoAvailablePixelFormat); }
if self.double_buffer == Some(false) { return Err(CreationError::NoAvailablePixelFormat); }
if self.float_color_buffer { return Err(CreationError::NoAvailablePixelFormat); }
// filtering formats that don't match the requirements
let iter = iter.into_iter().filter(|&(_, ref format)| {
if format.color_bits < self.color_bits.unwrap_or(0) {
return false;
}
if format.alpha_bits < self.alpha_bits.unwrap_or(0) {
return false;
}
if format.depth_bits < self.depth_bits.unwrap_or(0) {
return false;
}
if format.stencil_bits < self.stencil_bits.unwrap_or(0) {
return false;
}
if !format.stereoscopy && self.stereoscopy {
return false;
}
if let Some(req_ms) = self.multisampling {
match format.multisampling {
Some(val) if val >= req_ms => (),
_ => return false
}
} else {
if format.multisampling.is_some() {
return false;
}
}
if self.srgb && !format.srgb {
return false;
}
true
});
// sorting so that the preferred format comes first
let mut formats = iter.collect::<Vec<_>>();
formats.sort_by(|&(_, ref left), &(_, ref right)| {
// prefer hardware-accelerated formats
if left.hardware_accelerated && !right.hardware_accelerated {
return Ordering::Less;
} else if right.hardware_accelerated && !left.hardware_accelerated {
return Ordering::Greater;
}
// prefer sRGB formats
if left.srgb && !right.srgb {
return Ordering::Less;
} else if right.srgb && !left.srgb {
return Ordering::Greater;
}
// prefer formats with the highest color+alpha bits
if left.color_bits + left.alpha_bits != right.color_bits + right.alpha_bits {
return (right.color_bits + right.alpha_bits)
.cmp(&(left.color_bits + left.alpha_bits));
}
// prefer double-buffering formats
if left.double_buffer && !right.double_buffer {
return Ordering::Less;
} else if right.double_buffer && !left.double_buffer {
return Ordering::Greater;
}
// prefer formats with the highest depth bits
if left.depth_bits != right.depth_bits {
return (right.depth_bits).cmp(&left.depth_bits);
}
// prefer formats with the highest stencil bits
if left.stencil_bits != right.stencil_bits {
return (right.stencil_bits).cmp(&left.stencil_bits);
}
// prefer formats with multisampling
if left.multisampling.is_some() && right.multisampling.is_none() {
return Ordering::Less;
} else if right.multisampling.is_some() && left.multisampling.is_none() {
return Ordering::Greater;
}
// default
return Ordering::Equal;
});
formats.into_iter().next().ok_or(CreationError::NoAvailablePixelFormat)
}
}
impl Default for PixelFormatRequirements {
#[inline]
fn default() -> PixelFormatRequirements {