mirror of
https://github.com/yuzu-emu/yuzu.git
synced 2024-07-04 23:31:19 +01:00
123 lines
4.1 KiB
C++
123 lines
4.1 KiB
C++
// Copyright 2018 yuzu Emulator Project
|
|
// Licensed under GPLv2 or any later version
|
|
// Refer to the license.txt file included.
|
|
|
|
#include "common/microprofile.h"
|
|
#include "core/core.h"
|
|
#include "core/memory.h"
|
|
#include "video_core/dma_pusher.h"
|
|
#include "video_core/engines/maxwell_3d.h"
|
|
#include "video_core/gpu.h"
|
|
|
|
namespace Tegra {
|
|
|
|
DmaPusher::DmaPusher(GPU& gpu) : gpu(gpu) {}
|
|
|
|
DmaPusher::~DmaPusher() = default;
|
|
|
|
MICROPROFILE_DEFINE(DispatchCalls, "GPU", "Execute command buffer", MP_RGB(128, 128, 192));
|
|
|
|
void DmaPusher::DispatchCalls() {
|
|
MICROPROFILE_SCOPE(DispatchCalls);
|
|
|
|
// On entering GPU code, assume all memory may be touched by the ARM core.
|
|
gpu.Maxwell3D().dirty_flags.OnMemoryWrite();
|
|
|
|
dma_pushbuffer_subindex = 0;
|
|
|
|
while (Core::System::GetInstance().IsPoweredOn()) {
|
|
if (!Step()) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
bool DmaPusher::Step() {
|
|
if (dma_get != dma_put) {
|
|
// Push buffer non-empty, read a word
|
|
const CommandHeader command_header{
|
|
Memory::Read32(*gpu.MemoryManager().GpuToCpuAddress(dma_get))};
|
|
|
|
dma_get += sizeof(u32);
|
|
|
|
if (!non_main) {
|
|
dma_mget = dma_get;
|
|
}
|
|
|
|
// now, see if we're in the middle of a command
|
|
if (dma_state.length_pending) {
|
|
// Second word of long non-inc methods command - method count
|
|
dma_state.length_pending = 0;
|
|
dma_state.method_count = command_header.method_count_;
|
|
} else if (dma_state.method_count) {
|
|
// Data word of methods command
|
|
CallMethod(command_header.argument);
|
|
|
|
if (!dma_state.non_incrementing) {
|
|
dma_state.method++;
|
|
}
|
|
|
|
if (dma_increment_once) {
|
|
dma_state.non_incrementing = true;
|
|
}
|
|
|
|
dma_state.method_count--;
|
|
} else {
|
|
// No command active - this is the first word of a new one
|
|
switch (command_header.mode) {
|
|
case SubmissionMode::Increasing:
|
|
SetState(command_header);
|
|
dma_state.non_incrementing = false;
|
|
dma_increment_once = false;
|
|
break;
|
|
case SubmissionMode::NonIncreasing:
|
|
SetState(command_header);
|
|
dma_state.non_incrementing = true;
|
|
dma_increment_once = false;
|
|
break;
|
|
case SubmissionMode::Inline:
|
|
dma_state.method = command_header.method;
|
|
dma_state.subchannel = command_header.subchannel;
|
|
CallMethod(command_header.arg_count);
|
|
dma_state.non_incrementing = true;
|
|
dma_increment_once = false;
|
|
break;
|
|
case SubmissionMode::IncreaseOnce:
|
|
SetState(command_header);
|
|
dma_state.non_incrementing = false;
|
|
dma_increment_once = true;
|
|
break;
|
|
}
|
|
}
|
|
} else if (ib_enable && !dma_pushbuffer.empty()) {
|
|
// Current pushbuffer empty, but we have more IB entries to read
|
|
const CommandList& command_list{dma_pushbuffer.front()};
|
|
const CommandListHeader& command_list_header{command_list[dma_pushbuffer_subindex++]};
|
|
dma_get = command_list_header.addr;
|
|
dma_put = dma_get + command_list_header.size * sizeof(u32);
|
|
non_main = command_list_header.is_non_main;
|
|
|
|
if (dma_pushbuffer_subindex >= command_list.size()) {
|
|
// We've gone through the current list, remove it from the queue
|
|
dma_pushbuffer.pop();
|
|
dma_pushbuffer_subindex = 0;
|
|
}
|
|
} else {
|
|
// Otherwise, pushbuffer empty and IB empty or nonexistent - nothing to do
|
|
return {};
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void DmaPusher::SetState(const CommandHeader& command_header) {
|
|
dma_state.method = command_header.method;
|
|
dma_state.subchannel = command_header.subchannel;
|
|
dma_state.method_count = command_header.method_count;
|
|
}
|
|
|
|
void DmaPusher::CallMethod(u32 argument) const {
|
|
gpu.CallMethod({dma_state.method, argument, dma_state.subchannel, dma_state.method_count});
|
|
}
|
|
|
|
} // namespace Tegra
|