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d3d12: make hello_triangle copy fb

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chyyran 2023-02-01 00:15:52 -05:00 committed by Ronny Chan
parent 10cd240868
commit e1154ac52a
1 changed files with 48 additions and 3 deletions
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51
librashader-runtime-d3d12/src/hello_triangle.rs
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@ -263,7 +263,7 @@ pub mod d3d12_hello_triangle {
root_signature: ID3D12RootSignature, root_signature: ID3D12RootSignature,
pso: ID3D12PipelineState, pso: ID3D12PipelineState,
command_list: ID3D12GraphicsCommandList, command_list: ID3D12GraphicsCommandList,
framebuffer: ID3D12Resource,
// we need to keep this around to keep the reference alive, even though // we need to keep this around to keep the reference alive, even though
// nothing reads from it // nothing reads from it
#[allow(dead_code)] #[allow(dead_code)]
@ -352,7 +352,7 @@ pub mod d3d12_hello_triangle {
let rtv_heap: ID3D12DescriptorHeap = unsafe { let rtv_heap: ID3D12DescriptorHeap = unsafe {
self.device self.device
.CreateDescriptorHeap(&D3D12_DESCRIPTOR_HEAP_DESC { .CreateDescriptorHeap(&D3D12_DESCRIPTOR_HEAP_DESC {
NumDescriptors: FRAME_COUNT, NumDescriptors: FRAME_COUNT + 1,
Type: D3D12_DESCRIPTOR_HEAP_TYPE_RTV, Type: D3D12_DESCRIPTOR_HEAP_TYPE_RTV,
..Default::default() ..Default::default()
}) })
@ -379,6 +379,26 @@ pub mod d3d12_hello_triangle {
Ok(render_target) Ok(render_target)
})?; })?;
let framebuffer: ID3D12Resource = unsafe {
let render_target: ID3D12Resource = swap_chain.GetBuffer(0)?;
let mut desc = render_target.GetDesc();
let mut heapprops = D3D12_HEAP_PROPERTIES::default();
let mut heappflags = D3D12_HEAP_FLAGS::default();
render_target.GetHeapProperties(Some(&mut heapprops), Some(&mut heappflags))?;
desc.Flags &= !D3D12_RESOURCE_FLAG_DENY_SHADER_RESOURCE;
let mut fb = None;
self.device.CreateCommittedResource(&heapprops, D3D12_HEAP_FLAG_NONE, &desc,
D3D12_RESOURCE_STATE_PIXEL_SHADER_RESOURCE,
None, &mut fb
)?;
fb.unwrap()
};
unsafe {
framebuffer.SetName(w!("framebuffer"))?;
}
let viewport = D3D12_VIEWPORT { let viewport = D3D12_VIEWPORT {
TopLeftX: 0.0, TopLeftX: 0.0,
TopLeftY: 0.0, TopLeftY: 0.0,
@ -438,6 +458,7 @@ pub mod d3d12_hello_triangle {
root_signature, root_signature,
pso, pso,
command_list, command_list,
framebuffer,
vertex_buffer, vertex_buffer,
vbv, vbv,
fence, fence,
@ -519,14 +540,38 @@ pub mod d3d12_hello_triangle {
command_list.IASetVertexBuffers(0, Some(&[resources.vbv])); command_list.IASetVertexBuffers(0, Some(&[resources.vbv]));
command_list.DrawInstanced(3, 1, 0, 0); command_list.DrawInstanced(3, 1, 0, 0);
// Indicate that the back buffer will now be used to present.
command_list.ResourceBarrier(&[transition_barrier( command_list.ResourceBarrier(&[transition_barrier(
&resources.render_targets[resources.frame_index as usize], &resources.render_targets[resources.frame_index as usize],
D3D12_RESOURCE_STATE_RENDER_TARGET, D3D12_RESOURCE_STATE_RENDER_TARGET,
D3D12_RESOURCE_STATE_COPY_SOURCE,
)]);
command_list.ResourceBarrier(&[transition_barrier(
&resources.framebuffer,
D3D12_RESOURCE_STATE_PIXEL_SHADER_RESOURCE,
D3D12_RESOURCE_STATE_COPY_DEST,
)]);
}
unsafe {
command_list.CopyResource(&resources.framebuffer,
&resources.render_targets[resources.frame_index as usize]);
command_list.ResourceBarrier(&[transition_barrier(
&resources.framebuffer,
D3D12_RESOURCE_STATE_COPY_DEST,
D3D12_RESOURCE_STATE_PIXEL_SHADER_RESOURCE,
)]);
command_list.ResourceBarrier(&[transition_barrier(
&resources.render_targets[resources.frame_index as usize],
D3D12_RESOURCE_STATE_COPY_SOURCE,
D3D12_RESOURCE_STATE_PRESENT, D3D12_RESOURCE_STATE_PRESENT,
)]); )]);
} }
unsafe { command_list.Close() } unsafe { command_list.Close() }
} }