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#![deny(missing_docs)]
extern crate gfx;
extern crate texture;
extern crate image;
pub use texture::*;
use std::path::Path;
use image::{
DynamicImage,
GenericImage,
RgbaImage,
};
use gfx::traits::*;
use gfx::core::factory::CombinedError;
use gfx::format::{Srgba8, R8_G8_B8_A8};
#[derive(Clone, Copy, PartialEq, Eq)]
pub enum Flip {
None,
Vertical,
}
pub struct Texture<R> where R: gfx::Resources {
pub surface: gfx::handle::Texture<R, R8_G8_B8_A8>,
pub view: gfx::handle::ShaderResourceView<R, [f32; 4]>
}
impl<R: gfx::Resources> Texture<R> {
pub fn empty<F>(factory: &mut F) -> Result<Self, CombinedError>
where F: gfx::Factory<R>
{
Rgba8Texture::create(factory, &[0u8; 4], [1, 1], &TextureSettings::new())
}
pub fn from_path<F, P>(
factory: &mut F,
path: P,
flip: Flip,
settings: &TextureSettings,
) -> Result<Self, String>
where F: gfx::Factory<R>,
P: AsRef<Path>
{
let img = try!(image::open(path).map_err(|e| e.to_string()));
let img = match img {
DynamicImage::ImageRgba8(img) => img,
img => img.to_rgba()
};
let img = if flip == Flip::Vertical {
image::imageops::flip_vertical(&img)
} else {
img
};
Texture::from_image(factory, &img, settings).map_err(
|e| format!("{:?}", e))
}
pub fn from_image<F>(
factory: &mut F,
img: &RgbaImage,
settings: &TextureSettings
) -> Result<Self, CombinedError>
where F: gfx::Factory<R>
{
let (width, height) = img.dimensions();
Rgba8Texture::create(factory, img, [width, height], settings)
}
pub fn from_memory_alpha<F>(
factory: &mut F,
buffer: &[u8],
width: u32,
height: u32,
settings: &TextureSettings
) -> Result<Self, CombinedError>
where F: gfx::Factory<R>
{
if width == 0 || height == 0 {
return Texture::empty(factory);
}
let size = [width, height];
let buffer = texture::ops::alpha_to_rgba8(buffer, size);
Rgba8Texture::create(factory, &buffer, size, settings)
}
pub fn update<F>(&mut self, factory: &mut F, img: &RgbaImage)
-> Result<(), CombinedError>
where F: gfx::Factory<R>
{
let (width, height) = img.dimensions();
Rgba8Texture::update(self, factory, img, [width, height])
}
}
impl<F, R> Rgba8Texture<F> for Texture<R>
where F: gfx::Factory<R>,
R: gfx::Resources
{
type Error = CombinedError;
fn create<S: Into<[u32; 2]>>(
factory: &mut F,
memory: &[u8],
size: S,
settings: &TextureSettings
) -> Result<Self, Self::Error> {
let size = size.into();
let (width, height) = (size[0] as u16, size[1] as u16);
let tex_kind = gfx::tex::Kind::D2(width, height,
gfx::tex::AaMode::Single);
let (surface, view) = try!(factory.create_texture_const::<Srgba8>(
tex_kind, gfx::cast_slice(memory),
settings.get_generate_mipmap()));
Ok(Texture { surface: surface, view: view })
}
fn update<S: Into<[u32; 2]>>(
&mut self,
factory: &mut F,
memory: &[u8],
_size: S,
) -> Result<(), Self::Error> {
factory.update_texture::<Srgba8>(&self.surface,
&self.surface.get_info().to_image_info(0),
gfx::cast_slice(memory),
None
).map_err(|err| err.into())
}
}
impl<R> ImageSize for Texture<R> where R: gfx::Resources {
#[inline(always)]
fn get_size(&self) -> (u32, u32) {
let (w, h, _, _) = self.surface.get_info().kind.get_dimensions();
(w as u32, h as u32)
}
}