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
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188

use crate::texture::TextureFormat;
use serde::{Serialize, Deserialize};
use bevy_property::Property;

#[derive(Clone, Debug)]
pub struct DepthStencilStateDescriptor {
    pub format: TextureFormat,
    pub depth_write_enabled: bool,
    pub depth_compare: CompareFunction,
    pub stencil_front: StencilStateFaceDescriptor,
    pub stencil_back: StencilStateFaceDescriptor,
    pub stencil_read_mask: u32,
    pub stencil_write_mask: u32,
}
#[derive(Copy, Clone, Debug, Hash, Eq, PartialEq)]
pub enum StencilOperation {
    Keep = 0,
    Zero = 1,
    Replace = 2,
    Invert = 3,
    IncrementClamp = 4,
    DecrementClamp = 5,
    IncrementWrap = 6,
    DecrementWrap = 7,
}

#[derive(Clone, Debug, PartialEq)]
pub struct StencilStateFaceDescriptor {
    pub compare: CompareFunction,
    pub fail_op: StencilOperation,
    pub depth_fail_op: StencilOperation,
    pub pass_op: StencilOperation,
}

impl StencilStateFaceDescriptor {
    pub const IGNORE: Self = StencilStateFaceDescriptor {
        compare: CompareFunction::Always,
        fail_op: StencilOperation::Keep,
        depth_fail_op: StencilOperation::Keep,
        pass_op: StencilOperation::Keep,
    };
}

#[derive(Copy, Clone, Debug, Hash, Eq, PartialEq)]
pub enum CompareFunction {
    Never = 0,
    Less = 1,
    Equal = 2,
    LessEqual = 3,
    Greater = 4,
    NotEqual = 5,
    GreaterEqual = 6,
    Always = 7,
}

#[derive(Copy, Clone, Debug, Hash, Eq, PartialEq, Serialize, Deserialize, Property)]
pub enum PrimitiveTopology {
    PointList = 0,
    LineList = 1,
    LineStrip = 2,
    TriangleList = 3,
    TriangleStrip = 4,
}

impl Default for PrimitiveTopology {
    fn default() -> Self {
        PrimitiveTopology::TriangleList
    }
}

#[derive(Copy, Clone, Debug, Hash, Eq, PartialEq)]
pub enum FrontFace {
    Ccw = 0,
    Cw = 1,
}

impl Default for FrontFace {
    fn default() -> Self {
        FrontFace::Ccw
    }
}

#[derive(Copy, Clone, Debug, Hash, Eq, PartialEq)]
pub enum CullMode {
    None = 0,
    Front = 1,
    Back = 2,
}

impl Default for CullMode {
    fn default() -> Self {
        CullMode::None
    }
}

#[derive(Clone, Debug, Default)]
pub struct RasterizationStateDescriptor {
    pub front_face: FrontFace,
    pub cull_mode: CullMode,
    pub depth_bias: i32,
    pub depth_bias_slope_scale: f32,
    pub depth_bias_clamp: f32,
}

#[derive(Clone, Debug)]
pub struct ColorStateDescriptor {
    pub format: TextureFormat,
    pub alpha_blend: BlendDescriptor,
    pub color_blend: BlendDescriptor,
    pub write_mask: ColorWrite,
}

#[derive(Clone, Debug, PartialEq)]
pub struct BlendDescriptor {
    pub src_factor: BlendFactor,
    pub dst_factor: BlendFactor,
    pub operation: BlendOperation,
}

impl BlendDescriptor {
    pub const REPLACE: Self = BlendDescriptor {
        src_factor: BlendFactor::One,
        dst_factor: BlendFactor::Zero,
        operation: BlendOperation::Add,
    };
}

bitflags::bitflags! {
    #[repr(transparent)]
    pub struct ColorWrite: u32 {
        const RED = 1;
        const GREEN = 2;
        const BLUE = 4;
        const ALPHA = 8;
        const COLOR = 7;
        const ALL = 15;
    }
}

impl Default for ColorWrite {
    fn default() -> Self {
        ColorWrite::ALL
    }
}

#[derive(Copy, Clone, Debug, Hash, Eq, PartialEq)]
pub enum BlendFactor {
    Zero = 0,
    One = 1,
    SrcColor = 2,
    OneMinusSrcColor = 3,
    SrcAlpha = 4,
    OneMinusSrcAlpha = 5,
    DstColor = 6,
    OneMinusDstColor = 7,
    DstAlpha = 8,
    OneMinusDstAlpha = 9,
    SrcAlphaSaturated = 10,
    BlendColor = 11,
    OneMinusBlendColor = 12,
}

#[derive(Copy, Clone, Debug, Hash, Eq, PartialEq)]
pub enum BlendOperation {
    Add = 0,
    Subtract = 1,
    ReverseSubtract = 2,
    Min = 3,
    Max = 4,
}

impl Default for BlendOperation {
    fn default() -> Self {
        BlendOperation::Add
    }
}

#[derive(Copy, Clone, Debug, Hash, Eq, PartialEq)]
pub enum IndexFormat {
    Uint16 = 0,
    Uint32 = 1,
}

impl Default for IndexFormat {
    fn default() -> Self {
        IndexFormat::Uint16
    }
}