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Fix unexpected format switching in display_vram (#667)

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This commit is contained in:
Cameron Gutman
2023-01-02 11:11:45 -06:00
committed by GitHub
parent f9963ed39b
commit 76ffa2a0b5
3 changed files with 56 additions and 24 deletions
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48
src/platform/windows/display_vram.cpp
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@@ -628,7 +628,7 @@ capture_e display_vram_t::snapshot(platf::img_t *img_base, std::chrono::millisec
cursor.set_pos(frame_info.PointerPosition.Position.x, frame_info.PointerPosition.Position.y, frame_info.PointerPosition.Visible);
}
if(capture_format != DXGI_FORMAT_UNKNOWN || frame_update_flag) {
if(frame_update_flag) {
texture2d_t src {};
// Get the texture object from this frame
@@ -641,12 +641,6 @@ capture_e display_vram_t::snapshot(platf::img_t *img_base, std::chrono::millisec
D3D11_TEXTURE2D_DESC desc;
src->GetDesc(&desc);
// If we don't know the capture format yet, grab it from this texture
if(capture_format == DXGI_FORMAT_UNKNOWN) {
capture_format = desc.Format;
BOOST_LOG(info) << "Capture format ["sv << dxgi_format_to_string(capture_format) << ']';
}
// It's possible for our display enumeration to race with mode changes and result in
// mismatched image pool and desktop texture sizes. If this happens, just reinit again.
if(desc.Width != width || desc.Height != height) {
@@ -654,6 +648,29 @@ capture_e display_vram_t::snapshot(platf::img_t *img_base, std::chrono::millisec
return capture_e::reinit;
}
// If we don't know the capture format yet, grab it from this texture
if(capture_format == DXGI_FORMAT_UNKNOWN) {
capture_format = desc.Format;
BOOST_LOG(info) << "Capture format ["sv << dxgi_format_to_string(capture_format) << ']';
D3D11_TEXTURE2D_DESC t {};
t.Width = width;
t.Height = height;
t.MipLevels = 1;
t.ArraySize = 1;
t.SampleDesc.Count = 1;
t.Usage = D3D11_USAGE_DEFAULT;
t.Format = capture_format;
t.BindFlags = 0;
// Create a texture to store the most recent copy of the desktop
auto status = device->CreateTexture2D(&t, nullptr, &last_frame_copy);
if(FAILED(status)) {
BOOST_LOG(error) << "Failed to create frame copy texture [0x"sv << util::hex(status).to_string_view() << ']';
return capture_e::error;
}
}
// It's also possible for the capture format to change on the fly. If that happens,
// reinitialize capture to try format detection again and create new images.
if(capture_format != desc.Format) {
@@ -666,10 +683,11 @@ capture_e display_vram_t::snapshot(platf::img_t *img_base, std::chrono::millisec
return capture_e::error;
}
// Copy the texture into this image
// Copy the texture into this image and the staging texture
device_ctx->CopyResource(img->texture.get(), src.get());
device_ctx->CopyResource(last_frame_copy.get(), src.get());
}
else {
else if(capture_format == DXGI_FORMAT_UNKNOWN) {
// We don't know the final capture format yet, so we will encode a dummy image
BOOST_LOG(debug) << "Capture format is still unknown. Encoding a blank image"sv;
@@ -677,6 +695,18 @@ capture_e display_vram_t::snapshot(platf::img_t *img_base, std::chrono::millisec
return capture_e::error;
}
}
else {
// We must know the capture format in this path or we would have hit the above unknown format case
if(complete_img(img, false)) {
return capture_e::error;
}
// We have a previously captured frame to reuse. We can't just grab the src texture from
// the call to AcquireNextFrame() because that won't be valid. It seems to return a texture
// in the unmodified desktop format (rather than the formats we passed to DuplicateOutput1())
// if called in that case.
device_ctx->CopyResource(img->texture.get(), last_frame_copy.get());
}
if(cursor.visible && cursor_visible) {
D3D11_VIEWPORT view {