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December 10, 2018 03:32
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use ash::vk::{ Format }; | |
use std::convert::{ Into }; | |
#[derive(Copy, Clone, Debug)] | |
struct ComponentMetadata { | |
size_bits: usize, | |
channel: char | |
} | |
#[derive(Copy, Clone, Debug)] | |
struct PixelFormatMetadata { | |
components: &'static [ComponentMetadata], | |
vulkan_format: Format | |
} | |
#[derive(Clone, Copy, Debug)] | |
pub enum PixelFormat { | |
BGRA8, | |
BGR8, | |
Depth, | |
DepthStencil | |
} | |
impl PixelFormat { | |
fn get_metadata(&self) -> PixelFormatMetadata { | |
match self { | |
// Color formats | |
PixelFormat::BGRA8 => PixelFormatMetadata { | |
components: &'static [ | |
ComponentMetadata { size_bits: 8, channel: 'b' }, | |
ComponentMetadata { size_bits: 8, channel: 'g' }, | |
ComponentMetadata { size_bits: 8, channel: 'r' }, | |
ComponentMetadata { size_bits: 8, channel: 'a' } | |
], | |
vulkan_format: Format::B8G8R8A8_UNORM | |
}, | |
PixelFormat::BGR8 => PixelFormatMetadata { | |
components: &'static [ | |
ComponentMetadata { size_bits: 8, channel: 'b' }, | |
ComponentMetadata { size_bits: 8, channel: 'g' }, | |
ComponentMetadata { size_bits: 8, channel: 'r' } | |
], | |
vulkan_format: Format::B8G8R8_UNORM | |
}, | |
PixelFormat::Depth => PixelFormatMetadata { | |
components: &'static [ | |
ComponentMetadata { size_bits: 16, channel: 'd' } | |
], | |
vulkan_format: Format::D16_UNORM | |
}, | |
PixelFormat::DepthStencil => PixelFormatMeta { | |
components: &'static [ | |
ComponentMetadata { size_bits: 16, channel: 'd' }, | |
ComponentMetadata { size_bits: 8, channel: 'a' } | |
], | |
vulkan_format: Format::D16_S8_UNORM | |
} | |
} | |
} | |
fn has_alpha(&self) -> bool { | |
self.get_metadata().components.iter().find(|&c| { c.channel == 'a' }).is_some() | |
} | |
fn has_stencil(&self) -> bool { | |
self.get_metadata().components.iter().find(|&c| { c.channel == 's' }).is_some() | |
} | |
fn has_depth(&self) -> bool { | |
self.get_metadata().components.iter().find(|&c| { c.channel == 'd' }).is_some() | |
} | |
} | |
impl Into<Format> for PixelFormat { | |
fn into(self) -> Format { | |
self.get_metadata().vulkan_format | |
} | |
} |
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