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D3D12HostDisplay: Implement RenderScreenshot()

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This commit is contained in:
Connor McLaughlin 2021-07-22 13:42:03 +10:00
parent a747e15ac7
commit cebf8957e6
1 changed files with 37 additions and 2 deletions
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39
src/frontend-common/d3d12_host_display.cpp
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@ -673,7 +673,6 @@ bool D3D12HostDisplay::Render()
swap_chain_buf.TransitionToState(D3D12_RESOURCE_STATE_RENDER_TARGET);
cmdlist->ClearRenderTargetView(swap_chain_buf.GetRTVOrDSVDescriptor(), clear_color.data(), 0, nullptr);
cmdlist->OMSetRenderTargets(1, &swap_chain_buf.GetRTVOrDSVDescriptor().cpu_handle, FALSE, nullptr);
cmdlist->SetGraphicsRootSignature(m_display_root_signature.Get());
RenderDisplay(cmdlist);
@ -696,7 +695,42 @@ bool D3D12HostDisplay::Render()
bool D3D12HostDisplay::RenderScreenshot(u32 width, u32 height, std::vector<u32>* out_pixels, u32* out_stride,
HostDisplayPixelFormat* out_format)
{
return false;
static constexpr DXGI_FORMAT format = DXGI_FORMAT_R8G8B8A8_UNORM;
static constexpr HostDisplayPixelFormat hdformat = HostDisplayPixelFormat::RGBA8;
D3D12::Texture render_texture;
if (!render_texture.Create(width, height, 1, format, DXGI_FORMAT_UNKNOWN, format, DXGI_FORMAT_UNKNOWN,
D3D12_RESOURCE_FLAG_ALLOW_RENDER_TARGET) ||
!m_readback_staging_texture.EnsureSize(width, height, format, false))
{
return false;
}
static constexpr std::array<float, 4> clear_color = {};
ID3D12GraphicsCommandList* cmdlist = g_d3d12_context->GetCommandList();
render_texture.TransitionToState(D3D12_RESOURCE_STATE_RENDER_TARGET);
cmdlist->ClearRenderTargetView(render_texture.GetRTVOrDSVDescriptor(), clear_color.data(), 0, nullptr);
cmdlist->OMSetRenderTargets(1, &render_texture.GetRTVOrDSVDescriptor().cpu_handle, FALSE, nullptr);
if (HasDisplayTexture())
{
const auto [left, top, draw_width, draw_height] = CalculateDrawRect(width, height, 0);
RenderDisplay(cmdlist, left, top, draw_width, draw_height, m_display_texture_handle, m_display_texture_width,
m_display_texture_height, m_display_texture_view_x, m_display_texture_view_y,
m_display_texture_view_width, m_display_texture_view_height, m_display_linear_filtering);
}
cmdlist->OMSetRenderTargets(0, nullptr, FALSE, nullptr);
render_texture.TransitionToState(D3D12_RESOURCE_STATE_COPY_SOURCE);
m_readback_staging_texture.CopyFromTexture(render_texture, 0, 0, 0, 0, 0, width, height);
const u32 stride = sizeof(u32) * width;
out_pixels->resize(width * height);
*out_stride = stride;
*out_format = hdformat;
return m_readback_staging_texture.ReadPixels(0, 0, width, height, out_pixels->data(), stride);
}
void D3D12HostDisplay::RenderImGui(ID3D12GraphicsCommandList* cmdlist)
@ -742,6 +776,7 @@ void D3D12HostDisplay::RenderDisplay(ID3D12GraphicsCommandList* cmdlist, s32 lef
std::memcpy(m_display_uniform_buffer.GetCurrentHostPointer(), uniforms, sizeof(uniforms));
m_display_uniform_buffer.CommitMemory(sizeof(uniforms));
cmdlist->SetGraphicsRootSignature(m_display_root_signature.Get());
cmdlist->SetPipelineState(m_display_pipeline.Get());
cmdlist->SetGraphicsRootConstantBufferView(0, m_display_uniform_buffer.GetGPUPointer() + ubo_offset);
cmdlist->SetGraphicsRootDescriptorTable(1, reinterpret_cast<D3D12::Texture*>(texture_handle)->GetSRVDescriptor());