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Code Issues Releases Activity

buffer_cache: Apply storage buffer alignment only to the offset

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This commit is contained in:
Ameer J 2023-10-30 19:34:02 -04:00
parent 7d34800531
commit 735612c9b3
1 changed files with 12 additions and 8 deletions
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20
src/video_core/buffer_cache/buffer_cache.h
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@ -1770,7 +1770,6 @@ template <class P>
Binding BufferCache<P>::StorageBufferBinding(GPUVAddr ssbo_addr, u32 cbuf_index, Binding BufferCache<P>::StorageBufferBinding(GPUVAddr ssbo_addr, u32 cbuf_index,
bool is_written) const { bool is_written) const {
const GPUVAddr gpu_addr = gpu_memory->Read<u64>(ssbo_addr); const GPUVAddr gpu_addr = gpu_memory->Read<u64>(ssbo_addr);
const u32 alignment = runtime.GetStorageBufferAlignment();
const auto size = [&]() { const auto size = [&]() {
const bool is_nvn_cbuf = cbuf_index == 0; const bool is_nvn_cbuf = cbuf_index == 0;
// The NVN driver buffer (index 0) is known to pack the SSBO address followed by its size. // The NVN driver buffer (index 0) is known to pack the SSBO address followed by its size.
@ -1786,19 +1785,24 @@ Binding BufferCache<P>::StorageBufferBinding(GPUVAddr ssbo_addr, u32 cbuf_index,
const u32 memory_layout_size = static_cast<u32>(gpu_memory->GetMemoryLayoutSize(gpu_addr)); const u32 memory_layout_size = static_cast<u32>(gpu_memory->GetMemoryLayoutSize(gpu_addr));
return std::min(memory_layout_size, static_cast<u32>(8_MiB)); return std::min(memory_layout_size, static_cast<u32>(8_MiB));
}(); }();
// Alignment only applies to the offset of the buffer
const u32 alignment = runtime.GetStorageBufferAlignment();
const GPUVAddr aligned_gpu_addr = Common::AlignDown(gpu_addr, alignment); const GPUVAddr aligned_gpu_addr = Common::AlignDown(gpu_addr, alignment);
const u32 aligned_size = const u32 aligned_size = static_cast<u32>(gpu_addr - aligned_gpu_addr) + size;
Common::AlignUp(static_cast<u32>(gpu_addr - aligned_gpu_addr) + size, alignment);
const std::optional<VAddr> cpu_addr = gpu_memory->GpuToCpuAddress(aligned_gpu_addr); const std::optional<VAddr> aligned_cpu_addr = gpu_memory->GpuToCpuAddress(aligned_gpu_addr);
if (!cpu_addr || size == 0) { if (!aligned_cpu_addr || size == 0) {
LOG_WARNING(HW_GPU, "Failed to find storage buffer for cbuf index {}", cbuf_index); LOG_WARNING(HW_GPU, "Failed to find storage buffer for cbuf index {}", cbuf_index);
return NULL_BINDING; return NULL_BINDING;
} }
const VAddr cpu_end = Common::AlignUp(*cpu_addr + aligned_size, Core::Memory::YUZU_PAGESIZE); const std::optional<VAddr> cpu_addr = gpu_memory->GpuToCpuAddress(gpu_addr);
ASSERT_MSG(cpu_addr, "Unaligned storage buffer address not found for cbuf index {}", cbuf_index);
// The end address used for size calculation does not need to be aligned
const VAddr cpu_end = Common::AlignUp(*cpu_addr + size, Core::Memory::YUZU_PAGESIZE);
const Binding binding{ const Binding binding{
.cpu_addr = *cpu_addr, .cpu_addr = *aligned_cpu_addr,
.size = is_written ? aligned_size : static_cast<u32>(cpu_end - *cpu_addr), .size = is_written ? aligned_size : static_cast<u32>(cpu_end - *aligned_cpu_addr),
.buffer_id = BufferId{}, .buffer_id = BufferId{},
}; };
return binding; return binding;