1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130


use crate::ffi::root::gli;
use crate::ffi::root::glm;
use crate::ffi::root::bindings::Texture2DArray as bindings;

use crate::format::Format;
use crate::target::Target;
use crate::texture::{GliTexture, Texture2D};
use crate::texture::inner::TextureAccessible;
use crate::Extent2d;

/// 2d array texture
#[repr(transparent)]
pub struct Texture2DArray {
    ffi: gli::texture2d_array,
}

impl Texture2DArray {

    /// Create an empty texture 2D array.
    #[inline]
    pub fn new_empty() -> Texture2DArray {
        Texture2DArray { ffi: unsafe { bindings::tex2darray_new_empty() } }
    }

    /// Create a texture2d_array and allocate a new storage_linear.
    #[inline]
    pub fn new(format: Format, extent: Extent2d, layers: usize, levels: usize) -> Texture2DArray {
        Texture2DArray { ffi: unsafe { bindings::tex2darray_new_(format.0, glm::ivec2(extent.into()), layers, levels) } }
    }

    /// Create a texture2d_array and allocate a new storage_linear with a complete mipmap chain.
    #[inline]
    pub fn new_with_mipmap_chain(format: Format, extent: Extent2d, layers: usize) -> Texture2DArray {
        Texture2DArray { ffi: unsafe { bindings::tex2darray_new_with_mipmap_chain(format.0, glm::ivec2(extent.into()), layers) } }
    }

    /// Create a texture2d_array view with an existing storage_linear.
    #[inline]
    pub fn share_from(texture: &impl GliTexture) -> Texture2DArray {
        Texture2DArray { ffi: unsafe { bindings::tex2darray_share_from(texture.raw_texture()) } }
    }

    /// Create a texture2d_array view with an existing storage_linear.
    #[inline]
    pub fn share_from_detail(texture: &impl GliTexture, format: Format, base_layer: usize, max_layer: usize, base_face: usize, max_face: usize, base_level: usize, max_level: usize) -> Texture2DArray {

        Texture2DArray {
            ffi: unsafe { bindings::tex2darray_share_from_detail(texture.raw_texture(), format.0, base_layer, max_layer, base_face, max_face, base_level, max_level) }
        }
    }

    /// Create a texture2d_array view, reference a subset of an existing texture2d_array instance.
    #[inline]
    pub fn share_from_subset(texture: &Texture2DArray, base_layer: usize, max_layer: usize, base_level: usize, max_level: usize) -> Texture2DArray {

        Texture2DArray {
            ffi: unsafe { bindings::tex2darray_share_from_subset(&texture.ffi, base_layer, max_layer, base_level, max_level) }
        }
    }

    /// Create a view of the texture identified by Layer in the texture array.
    ///
    /// This method is equivalent to `[]` operator in C++ version.
    #[inline]
    pub fn get_layer(&self, layer: usize) -> Texture2D {

        debug_assert!(layer < self.layers());

        Texture2D::share_from_detail(
            self, self.format(),
            self.base_layer() + layer, self.base_layer() + layer,
            self.base_face(), self.max_face(),
            self.base_level(), self.max_level())
    }

    #[doc(hidden)]
    #[inline]
    pub(crate) fn raw_ffi(&self) -> &gli::texture2d_array {
        &self.ffi
    }
}

impl GliTexture for Texture2DArray {
    const TARGET_TYPE: Target = Target::TARGET_2D_ARRAY;
    type ExtentType = Extent2d; // equivalent to gli::texture2d_extent_type.
}

impl TextureAccessible for Texture2DArray {

    fn raw_texture(&self) -> &gli::texture {
        &self.ffi._base
    }

    fn raw_texture_mut(&mut self) -> &mut gli::texture {
        &mut self.ffi._base
    }
}

impl From<gli::texture> for Texture2DArray {

    fn from(ffi: gli::texture) -> Texture2DArray {
        Texture2DArray { ffi: gli::texture2d_array { _base: ffi } }
    }
}

impl std::cmp::PartialEq for Texture2DArray {

    /// Compare two textures. Two textures are the same when the data, the format and the targets are the same.
    fn eq(&self, other: &Texture2DArray) -> bool {

        use crate::ffi::root::bindings::Comparison::is_texture_equal;

        unsafe {
            is_texture_equal(self.raw_texture(), other.raw_texture())
        }
    }

    /// Compare two textures. Two textures are the same when the data, the format and the targets are the same.
    fn ne(&self, other: &Texture2DArray) -> bool {

        use crate::ffi::root::bindings::Comparison::is_texture_unequal;

        unsafe {
            is_texture_unequal(self.raw_texture(), other.raw_texture())
        }
    }
}

impl std::cmp::Eq for Texture2DArray {}