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//! Wrapper around the RAL code in celeritas-core
use celeritas_sys::{
BufferHandle, GPU_CmdEncoder, GPU_CmdEncoder_BeginRender, GPU_CmdEncoder_EndRender,
GPU_GetDefaultEncoder,
};
pub struct FrameRenderEncoder(*mut GPU_CmdEncoder);
/// Holds a pointer into the raw `GPU_Renderpass`
pub struct RenderPass(*mut celeritas_sys::GPU_Renderpass);
impl FrameRenderEncoder {
pub fn new(renderpass: &RenderPass) -> Self {
let enc = unsafe {
let enc = GPU_GetDefaultEncoder();
GPU_CmdEncoder_BeginRender(enc, renderpass.0);
enc
};
FrameRenderEncoder(enc)
}
}
impl Drop for FrameRenderEncoder {
fn drop(&mut self) {
unsafe {
GPU_CmdEncoder_EndRender(self.0);
}
}
}
impl FrameRenderEncoder {
pub fn set_vertex_buffer(&self, buf: BufferHandle) {
// TODO: Get buffer ptr from handle
// TODO: assert that buffer type is vertex
todo!()
}
pub fn set_index_buffer(&self, buf: BufferHandle) {
// TODO: Get buffer ptr from handle
// TODO: assert that buffer type is index
todo!()
}
}
// --- types
#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
pub enum PrimitiveTopology {
Point,
Line,
Triangle,
}
impl From<celeritas_sys::PrimitiveTopology> for PrimitiveTopology {
fn from(value: celeritas_sys::PrimitiveTopology) -> Self {
match value {
celeritas_sys::PrimitiveTopology_PRIMITIVE_TOPOLOGY_POINT => PrimitiveTopology::Point,
celeritas_sys::PrimitiveTopology_PRIMITIVE_TOPOLOGY_LINE => PrimitiveTopology::Line,
celeritas_sys::PrimitiveTopology_PRIMITIVE_TOPOLOGY_TRIANGLE => {
PrimitiveTopology::Triangle
}
_ => unreachable!("enum conversion should be infallible"),
}
}
}
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