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buffer_cache: Better image search for buffer validation (#3057)

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TheTurtle 2025-06-08 22:14:09 +03:00 • committed by GitHub
parent f2bbb6847d
commit a07a6bb9d3
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1 changed files with 36 additions and 15 deletions
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39
src/video_core/buffer_cache/buffer_cache.cpp
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@ -798,24 +798,45 @@ void BufferCache::SynchronizeBuffer(Buffer& buffer, VAddr device_addr, u32 size,
}
bool BufferCache::SynchronizeBufferFromImage(Buffer& buffer, VAddr device_addr, u32 size) {
static constexpr FindFlags find_flags =
FindFlags::NoCreate | FindFlags::RelaxDim | FindFlags::RelaxFmt | FindFlags::RelaxSize;
TextureCache::BaseDesc desc{};
desc.info.guest_address = device_addr;
desc.info.guest_size = size;
const ImageId image_id = texture_cache.FindImage(desc, find_flags);
if (!image_id) {
return false;
boost::container::small_vector<ImageId, 6> image_ids;
texture_cache.ForEachImageInRegion(device_addr, size, [&](ImageId image_id, Image& image) {
if (image.info.guest_address != device_addr) {
return;
}
Image& image = texture_cache.GetImage(image_id);
// Only perform sync if image is:
// - GPU modified; otherwise there are no changes to synchronize.
// - Not CPU dirty; otherwise we could overwrite CPU changes with stale GPU changes.
// - Not GPU dirty; otherwise we could overwrite GPU changes with stale image data.
if (False(image.flags & ImageFlagBits::GpuModified) ||
True(image.flags & ImageFlagBits::Dirty)) {
return;
}
image_ids.push_back(image_id);
});
if (image_ids.empty()) {
return false;
}
ImageId image_id{};
if (image_ids.size() == 1) {
// Sometimes image size might not exactly match with requested buffer size
// If we only found 1 candidate image use it without too many questions.
image_id = image_ids[0];
} else {
for (s32 i = 0; i < image_ids.size(); ++i) {
Image& image = texture_cache.GetImage(image_ids[i]);
if (image.info.guest_size == size) {
image_id = image_ids[i];
break;
}
}
if (!image_id) {
LOG_WARNING(Render_Vulkan,
"Failed to find exact image match for copy addr={:#x}, size={:#x}",
device_addr, size);
return false;
}
}
Image& image = texture_cache.GetImage(image_id);
ASSERT_MSG(device_addr == image.info.guest_address,
"Texel buffer aliases image subresources {:x} : {:x}", device_addr,
image.info.guest_address);