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use std::sync::Arc;
use ash::vk::{self, Handle};
use crate::core::Resolution;
use crate::frame_graph::{Scissor, Viewport};
use crate::resources::{Res, Resources};
use crate::RasterPipeline;
/// The context of the currently running pass
pub struct PassContext {
pub(crate) external_resources: Arc<Resources>,
pub(crate) bindless: vk::DescriptorSet,
pub(crate) resolution: vk::Extent2D,
pub(crate) pipeline: vk::Pipeline,
pub(crate) layout: vk::PipelineLayout,
pub(crate) device: ash::Device,
pub(crate) cbuf: vk::CommandBuffer,
}
impl PassContext {
pub unsafe fn set_viewport(&self, viewport: Viewport) {
let viewport = match viewport {
Viewport::FullRes => {
vk::Viewport::default()
.height(self.resolution.height as f32)
.width(self.resolution.width as f32)
.x(0.0)
.y(0.0)
},
Viewport::HalfRes => {
vk::Viewport::default()
.height(self.resolution.height as f32 / 2.0)
.width(self.resolution.width as f32 / 2.0)
.x(0.0)
.y(0.0)
},
Viewport::QuarterRes => {
vk::Viewport::default()
.height(self.resolution.height as f32 / 4.0)
.width(self.resolution.width as f32 / 4.0)
.x(0.0)
.y(0.0)
},
Viewport::Custom(width, height) => {
vk::Viewport::default()
.height(width as f32)
.width(height as f32)
.x(0.0)
.y(0.0)
}
};
let viewports = vec![viewport];
self.device.cmd_set_viewport(self.cbuf, 0, &viewports);
}
pub unsafe fn set_scissor(&self, scissor: Scissor) {
let scissor = match scissor {
Scissor::FullRes => {
vk::Rect2D::default()
.extent(vk::Extent2D {
width: self.resolution.width,
height: self.resolution.height
})
.offset(vk::Offset2D {
x: 0,
y: 0
})
},
Scissor::HalfRes => {
vk::Rect2D::default()
.extent(vk::Extent2D {
width: self.resolution.width / 2,
height: self.resolution.height / 2
})
.offset(vk::Offset2D {
x: 0,
y: 0
})
},
Scissor::QuarterRes => {
vk::Rect2D::default()
.extent(vk::Extent2D {
width: self.resolution.width / 4,
height: self.resolution.height / 4
})
.offset(vk::Offset2D {
x: 0,
y: 0
})
},
Scissor::Custom(width, height) => {
vk::Rect2D::default()
.extent(vk::Extent2D {
width: width,
height: height
})
.offset(vk::Offset2D {
x: 0,
y: 0
})
}
};
let scissors = vec![scissor];
self.device.cmd_set_scissor(self.cbuf, 0, &scissors);
}
// pub unsafe fn bind_pipeline(&self, handle: &Res<RasterPipeline>) {
// self.device
// .cmd_bind_pipeline(self.cbuf, vk::PipelineBindPoint::GRAPHICS, self.pipeline);
// }
pub unsafe fn dispatch(&self, x: u32, y: u32, z: u32) {
self.device.cmd_dispatch(self.cbuf, x, y, z);
}
pub unsafe fn draw_mesh(
&self,
// mesh: &Handle<Mesh>,
// transform: &Handle<Transform>,
) {
// let resources = self.resources.assets.read().unwrap();
// let mesh =
// resources.mesh.get_mesh(renderable.mesh.clone());
// self.device
// .cmd_bind_vertex_buffers(self.cbuf, 0,
// &[mesh.vertex_buffer.raw], &[0]);
// self.device
// .cmd_draw(self.cbuf, mesh.vertex_buffer.vertex_count,
// 1, 0, 0);
}
pub unsafe fn draw(&self, vertex_count: u32) {
self.device.cmd_draw(self.cbuf, vertex_count, 1, 0, 0);
}
}