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VideoBackends:Metal: Use a temporary buffer for large texture uploads

This commit is contained in:
TellowKrinkle 2022-09-01 22:18:55 -05:00
parent a13f09433c
commit fd2680d8b4
1 changed files with 21 additions and 1 deletions
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22
Source/Core/VideoBackends/Metal/MTLTexture.mm
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@ -51,6 +51,10 @@ void Metal::Texture::ResolveFromTexture(const AbstractTexture* src,
g_state_tracker->ResolveTexture(src_tex, m_tex, layer, level);
}
// Use a temporary texture for large texture loads
// (Since the main upload buffer doesn't shrink after it grows)
static constexpr u32 STAGING_TEXTURE_UPLOAD_THRESHOLD = 1024 * 1024 * 4;
void Metal::Texture::Load(u32 level, u32 width, u32 height, u32 row_length, //
const u8* buffer, size_t buffer_size)
{
@ -60,7 +64,23 @@ void Metal::Texture::Load(u32 level, u32 width, u32 height, u32 row_length, //
const u32 num_rows = Common::AlignUp(height, block_size) / block_size;
const u32 source_pitch = CalculateStrideForFormat(m_config.format, row_length);
const u32 upload_size = source_pitch * num_rows;
StateTracker::Map map = g_state_tracker->AllocateForTextureUpload(upload_size);
MRCOwned<id<MTLBuffer>> tmp_buffer;
StateTracker::Map map;
if (upload_size > STAGING_TEXTURE_UPLOAD_THRESHOLD)
{
tmp_buffer = MRCTransfer([g_device
newBufferWithLength:upload_size
options:MTLResourceStorageModeShared | MTLResourceCPUCacheModeWriteCombined]);
[tmp_buffer setLabel:@"Temp Texture Upload"];
map.gpu_buffer = tmp_buffer;
map.gpu_offset = 0;
map.cpu_buffer = [tmp_buffer contents];
}
else
{
map = g_state_tracker->AllocateForTextureUpload(upload_size);
}
memcpy(map.cpu_buffer, buffer, upload_size);
id<MTLBlitCommandEncoder> encoder = g_state_tracker->GetTextureUploadEncoder();
[encoder copyFromBuffer:map.gpu_buffer