hexga_graphics 0.0.11-beta.53

The default graphic renderer of hexga_engine.
Documentation 
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use super::*;

pub struct ImmediateRenderBuilder<P = DrawParam>
{
    pub draw_call: NonEmptyStack<DrawCall<P>>,
    pub params: NonEmptyStack<P>,
    pub big_mesh: MeshBuilder,
}

#[derive(Clone, Debug, Default)]
pub struct ImmediateRender<P>
{
    pub draw_call: Vec<DrawCall<P>>,
}

#[derive(Clone, Debug)]
pub enum DrawGeometry
{
    Immediate(DrawGeometryImmediate),
}
#[derive(Clone, Debug, Default)]
pub struct DrawGeometryImmediate
{
    pub vertices_begin: usize,
    pub vertices_len: usize,

    pub indices_begin: usize,
    pub indices_len: usize,
}

impl Default for DrawGeometry
{
    fn default() -> Self { Self::Immediate(___()) }
}

#[derive(Clone, Debug, Default)]
pub struct DrawCall<P = DrawParam>
{
    pub geometry: DrawGeometry,
    pub param: P,
}
impl<P> Deref for DrawCall<P>
{
    type Target = P;
    fn deref(&self) -> &Self::Target { &self.param }
}
impl<P> DerefMut for DrawCall<P>
{
    fn deref_mut(&mut self) -> &mut Self::Target { &mut self.param }
}

#[derive(Clone, PartialEq, Debug)]
pub struct DrawParam<T = ()>
{
    pub camera: Camera,
    pub viewport: Rect2,
    pub viewport_min_depth: float,
    pub viewport_max_depth: float,
    pub scissor: Rect2i,
    pub texture: T,
}
impl<T> Default for DrawParam<T>
where
    T: Default,
{
    fn default() -> Self
    {
        Self {
            camera: ___(),
            viewport: ___(),
            viewport_min_depth: 0.,
            viewport_max_depth: 1.,
            scissor: ___(),
            texture: ___(),
        }
    }
}