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[D3D12] Workaround for texture flickering on Nvidia - don't use sampler 2047

This commit is contained in:
Triang3l 2019-12-01 21:39:48 +03:00
parent c5db959154
commit 6a3a56b3b9
1 changed files with 8 additions and 2 deletions
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10
src/xenia/gpu/d3d12/d3d12_command_processor.cc
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@ -770,9 +770,15 @@ bool D3D12CommandProcessor::SetupContext() {
std::make_unique<ui::d3d12::UploadBufferPool>(device, 1024 * 1024);
view_heap_pool_ = std::make_unique<ui::d3d12::DescriptorHeapPool>(
device, D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV, 32768);
// Can't create a shader-visible heap with more than 2048 samplers.
// Direct3D 12 only allows shader-visible heaps with no more than 2048
// samplers (due to Nvidia addressing). However, there's also possibly a weird
// bug in the Nvidia driver (tested on 440.97 and earlier on Windows 10 1803)
// that caused the sampler with index 2047 not to work if a heap with 8 or
// less samplers also exists - in case of Xenia, it's the immediate drawer's
// sampler heap.
// FIXME(Triang3l): Investigate the issue with the sampler 2047 on Nvidia.
sampler_heap_pool_ = std::make_unique<ui::d3d12::DescriptorHeapPool>(
device, D3D12_DESCRIPTOR_HEAP_TYPE_SAMPLER, 2048);
device, D3D12_DESCRIPTOR_HEAP_TYPE_SAMPLER, 2000);
shared_memory_ =
std::make_unique<SharedMemory>(this, memory_, &trace_writer_);