1 files changed, 48 insertions, 0 deletions

diff --git a/src/video_core/engines/engine_upload.cpp b/src/video_core/engines/engine_upload.cpp
new file mode 100644
index 000000000..f8aa4ff55
--- /dev/null
+++ b/src/video_core/engines/engine_upload.cpp
@@ -0,0 +1,48 @@
+// Copyright 2019 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "common/assert.h"
+#include "video_core/engines/engine_upload.h"
+#include "video_core/memory_manager.h"
+#include "video_core/textures/decoders.h"
+
+namespace Tegra::Engines::Upload {
+
+State::State(MemoryManager& memory_manager, Registers& regs)
+    : memory_manager(memory_manager), regs(regs) {}
+
+void State::ProcessExec(const bool is_linear) {
+    write_offset = 0;
+    copy_size = regs.line_length_in * regs.line_count;
+    inner_buffer.resize(copy_size);
+    this->is_linear = is_linear;
+}
+
+void State::ProcessData(const u32 data, const bool is_last_call) {
+    const u32 sub_copy_size = std::min(4U, copy_size - write_offset);
+    std::memcpy(&inner_buffer[write_offset], &data, sub_copy_size);
+    write_offset += sub_copy_size;
+    if (!is_last_call) {
+        return;
+    }
+    const GPUVAddr address{regs.dest.Address()};
+    if (is_linear) {
+        memory_manager.WriteBlock(address, inner_buffer.data(), copy_size);
+    } else {
+        UNIMPLEMENTED_IF(regs.dest.z != 0);
+        UNIMPLEMENTED_IF(regs.dest.depth != 1);
+        UNIMPLEMENTED_IF(regs.dest.BlockWidth() != 1);
+        UNIMPLEMENTED_IF(regs.dest.BlockDepth() != 1);
+        const std::size_t dst_size = Tegra::Texture::CalculateSize(
+            true, 1, regs.dest.width, regs.dest.height, 1, regs.dest.BlockHeight(), 1);
+        tmp_buffer.resize(dst_size);
+        memory_manager.ReadBlock(address, tmp_buffer.data(), dst_size);
+        Tegra::Texture::SwizzleKepler(regs.dest.width, regs.dest.height, regs.dest.x, regs.dest.y,
+                                      regs.dest.BlockHeight(), copy_size, inner_buffer.data(),
+                                      tmp_buffer.data());
+        memory_manager.WriteBlock(address, tmp_buffer.data(), dst_size);
+    }
+}
+
+} // namespace Tegra::Engines::Upload