From 37c690576f8b7b9b4207973807b826411452f0c3 Mon Sep 17 00:00:00 2001 From: Fernando Sahmkow Date: Mon, 27 Apr 2020 23:57:24 -0400 Subject: MaxwellDMA: Optimize micro copies. --- src/video_core/engines/maxwell_dma.cpp | 40 ++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) (limited to 'src/video_core/engines') diff --git a/src/video_core/engines/maxwell_dma.cpp b/src/video_core/engines/maxwell_dma.cpp index 22ca730bc..01d7df405 100644 --- a/src/video_core/engines/maxwell_dma.cpp +++ b/src/video_core/engines/maxwell_dma.cpp @@ -90,7 +90,47 @@ void MaxwellDMA::HandleCopy() { ASSERT(regs.exec.enable_2d == 1); if (regs.exec.is_dst_linear && !regs.exec.is_src_linear) { + ASSERT(regs.src_params.BlockDepth() == 0); + // Optimized path for micro copies. + if (regs.dst_pitch * regs.y_count < Texture::GetGOBSize() && regs.dst_pitch <= 64) { + const u32 bytes_per_pixel = regs.dst_pitch / regs.x_count; + const std::size_t src_size = Texture::GetGOBSize(); + const std::size_t dst_size = regs.dst_pitch * regs.y_count; + u32 pos_x = regs.src_params.pos_x; + u32 pos_y = regs.src_params.pos_y; + const u64 offset = + Texture::GetGOBOffset(regs.src_params.size_x, regs.src_params.size_y, pos_x, pos_y, + regs.src_params.BlockDepth(), bytes_per_pixel); + const u32 x_in_gob = 64 / bytes_per_pixel; + pos_x = pos_x % x_in_gob; + pos_y = pos_y % 8; + + if (read_buffer.size() < src_size) { + read_buffer.resize(src_size); + } + + if (write_buffer.size() < dst_size) { + write_buffer.resize(dst_size); + } + + if (Settings::IsGPULevelExtreme()) { + memory_manager.ReadBlock(source + offset, read_buffer.data(), src_size); + memory_manager.ReadBlock(dest, write_buffer.data(), dst_size); + } else { + memory_manager.ReadBlockUnsafe(source + offset, read_buffer.data(), src_size); + memory_manager.ReadBlockUnsafe(dest, write_buffer.data(), dst_size); + } + + Texture::UnswizzleSubrect(regs.x_count, regs.y_count, regs.dst_pitch, + regs.src_params.size_x, bytes_per_pixel, read_buffer.data(), + write_buffer.data(), regs.src_params.BlockHeight(), pos_x, + pos_y); + + memory_manager.WriteBlock(dest, write_buffer.data(), dst_size); + + return; + } // If the input is tiled and the output is linear, deswizzle the input and copy it over. const u32 bytes_per_pixel = regs.dst_pitch / regs.x_count; const std::size_t src_size = Texture::CalculateSize( -- cgit v1.2.3