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c541559767
yuzu/src/video_core/engines/maxwell_dma.cpp
ameerj c6590ad07b scratch_buffer: Explicitly defing resize and resize_destructive functions 
resize keeps previous data intact when the buffer grows
resize_destructive destroys the previous data when the buffer grows
2022-12-19 22:40:50 -05:00

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// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "common/algorithm.h"
#include "common/assert.h"
#include "common/logging/log.h"
#include "common/microprofile.h"
#include "common/settings.h"
#include "core/core.h"
#include "video_core/engines/maxwell_3d.h"
#include "video_core/engines/maxwell_dma.h"
#include "video_core/memory_manager.h"
#include "video_core/renderer_base.h"
#include "video_core/textures/decoders.h"
MICROPROFILE_DECLARE(GPU_DMAEngine);
MICROPROFILE_DEFINE(GPU_DMAEngine, "GPU", "DMA Engine", MP_RGB(224, 224, 128));
namespace Tegra::Engines {
using namespace Texture;
MaxwellDMA::MaxwellDMA(Core::System& system_, MemoryManager& memory_manager_)
: system{system_}, memory_manager{memory_manager_} {}
MaxwellDMA::~MaxwellDMA() = default;
void MaxwellDMA::BindRasterizer(VideoCore::RasterizerInterface* rasterizer_) {
rasterizer = rasterizer_;
}
void MaxwellDMA::CallMethod(u32 method, u32 method_argument, bool is_last_call) {
ASSERT_MSG(method < NUM_REGS, "Invalid MaxwellDMA register");
regs.reg_array[method] = method_argument;
if (method == offsetof(Regs, launch_dma) / sizeof(u32)) {
Launch();
}
}
void MaxwellDMA::CallMultiMethod(u32 method, const u32* base_start, u32 amount,
u32 methods_pending) {
for (u32 i = 0; i < amount; ++i) {
CallMethod(method, base_start[i], methods_pending - i <= 1);
}
}
void MaxwellDMA::Launch() {
MICROPROFILE_SCOPE(GPU_DMAEngine);
LOG_TRACE(Render_OpenGL, "DMA copy 0x{:x} -> 0x{:x}", static_cast<GPUVAddr>(regs.offset_in),
static_cast<GPUVAddr>(regs.offset_out));
// TODO(Subv): Perform more research and implement all features of this engine.
const LaunchDMA& launch = regs.launch_dma;
ASSERT(launch.interrupt_type == LaunchDMA::InterruptType::NONE);
ASSERT(launch.data_transfer_type == LaunchDMA::DataTransferType::NON_PIPELINED);
if (launch.multi_line_enable) {
const bool is_src_pitch = launch.src_memory_layout == LaunchDMA::MemoryLayout::PITCH;
const bool is_dst_pitch = launch.dst_memory_layout == LaunchDMA::MemoryLayout::PITCH;
if (!is_src_pitch && !is_dst_pitch) {
// If both the source and the destination are in block layout, assert.
CopyBlockLinearToBlockLinear();
ReleaseSemaphore();
return;
}
if (is_src_pitch && is_dst_pitch) {
for (u32 line = 0; line < regs.line_count; ++line) {
const GPUVAddr source_line =
regs.offset_in + static_cast<size_t>(line) * regs.pitch_in;
const GPUVAddr dest_line =
regs.offset_out + static_cast<size_t>(line) * regs.pitch_out;
memory_manager.CopyBlock(dest_line, source_line, regs.line_length_in);
}
} else {
if (!is_src_pitch && is_dst_pitch) {
CopyBlockLinearToPitch();
} else {
CopyPitchToBlockLinear();
}
}
} else {
// TODO: allow multisized components.
auto& accelerate = rasterizer->AccessAccelerateDMA();
const bool is_const_a_dst = regs.remap_const.dst_x == RemapConst::Swizzle::CONST_A;
if (regs.launch_dma.remap_enable != 0 && is_const_a_dst) {
ASSERT(regs.remap_const.component_size_minus_one == 3);
accelerate.BufferClear(regs.offset_out, regs.line_length_in, regs.remap_consta_value);
std::vector<u32> tmp_buffer(regs.line_length_in, regs.remap_consta_value);
memory_manager.WriteBlockUnsafe(regs.offset_out,
reinterpret_cast<u8*>(tmp_buffer.data()),
regs.line_length_in * sizeof(u32));
} else {
const auto convert_linear_2_blocklinear_addr = [](u64 address) {
return (address & ~0x1f0ULL) | ((address & 0x40) >> 2) | ((address & 0x10) << 1) |
((address & 0x180) >> 1) | ((address & 0x20) << 3);
};
const auto src_kind = memory_manager.GetPageKind(regs.offset_in);
const auto dst_kind = memory_manager.GetPageKind(regs.offset_out);
const bool is_src_pitch = IsPitchKind(src_kind);
const bool is_dst_pitch = IsPitchKind(dst_kind);
if (!is_src_pitch && is_dst_pitch) {
UNIMPLEMENTED_IF(regs.line_length_in % 16 != 0);
UNIMPLEMENTED_IF(regs.offset_in % 16 != 0);
UNIMPLEMENTED_IF(regs.offset_out % 16 != 0);
std::vector<u8> tmp_buffer(16);
for (u32 offset = 0; offset < regs.line_length_in; offset += 16) {
memory_manager.ReadBlockUnsafe(
convert_linear_2_blocklinear_addr(regs.offset_in + offset),
tmp_buffer.data(), tmp_buffer.size());
memory_manager.WriteBlock(regs.offset_out + offset, tmp_buffer.data(),
tmp_buffer.size());
}
} else if (is_src_pitch && !is_dst_pitch) {
UNIMPLEMENTED_IF(regs.line_length_in % 16 != 0);
UNIMPLEMENTED_IF(regs.offset_in % 16 != 0);
UNIMPLEMENTED_IF(regs.offset_out % 16 != 0);
std::vector<u8> tmp_buffer(16);
for (u32 offset = 0; offset < regs.line_length_in; offset += 16) {
memory_manager.ReadBlockUnsafe(regs.offset_in + offset, tmp_buffer.data(),
tmp_buffer.size());
memory_manager.WriteBlock(
convert_linear_2_blocklinear_addr(regs.offset_out + offset),
tmp_buffer.data(), tmp_buffer.size());
}
} else {
if (!accelerate.BufferCopy(regs.offset_in, regs.offset_out, regs.line_length_in)) {
std::vector<u8> tmp_buffer(regs.line_length_in);
memory_manager.ReadBlockUnsafe(regs.offset_in, tmp_buffer.data(),
regs.line_length_in);
memory_manager.WriteBlock(regs.offset_out, tmp_buffer.data(),
regs.line_length_in);
}
}
}
}
ReleaseSemaphore();
}
void MaxwellDMA::CopyBlockLinearToPitch() {
UNIMPLEMENTED_IF(regs.src_params.block_size.width != 0);
UNIMPLEMENTED_IF(regs.src_params.layer != 0);
const bool is_remapping = regs.launch_dma.remap_enable != 0;
// Optimized path for micro copies.
const size_t dst_size = static_cast<size_t>(regs.pitch_out) * regs.line_count;
if (!is_remapping && dst_size < GOB_SIZE && regs.pitch_out <= GOB_SIZE_X &&
regs.src_params.height > GOB_SIZE_Y) {
FastCopyBlockLinearToPitch();
return;
}
// Deswizzle the input and copy it over.
const Parameters& src_params = regs.src_params;
const u32 num_remap_components = regs.remap_const.num_dst_components_minus_one + 1;
const u32 remap_components_size = regs.remap_const.component_size_minus_one + 1;
const u32 base_bpp = !is_remapping ? 1U : num_remap_components * remap_components_size;
u32 width = src_params.width;
u32 x_elements = regs.line_length_in;
u32 x_offset = src_params.origin.x;
u32 bpp_shift = 0U;
if (!is_remapping) {
bpp_shift = Common::FoldRight(
4U, [](u32 x, u32 y) { return std::min(x, static_cast<u32>(std::countr_zero(y))); },
width, x_elements, x_offset, static_cast<u32>(regs.offset_in));
width >>= bpp_shift;
x_elements >>= bpp_shift;
x_offset >>= bpp_shift;
}
const u32 bytes_per_pixel = base_bpp << bpp_shift;
const u32 height = src_params.height;
const u32 depth = src_params.depth;
const u32 block_height = src_params.block_size.height;
const u32 block_depth = src_params.block_size.depth;
const size_t src_size =
CalculateSize(true, bytes_per_pixel, width, height, depth, block_height, block_depth);
read_buffer.resize_destructive(src_size);
write_buffer.resize_destructive(dst_size);
memory_manager.ReadBlock(regs.offset_in, read_buffer.data(), src_size);
memory_manager.ReadBlock(regs.offset_out, write_buffer.data(), dst_size);
UnswizzleSubrect(write_buffer, read_buffer, bytes_per_pixel, width, height, depth, x_offset,
src_params.origin.y, x_elements, regs.line_count, block_height, block_depth,
regs.pitch_out);
memory_manager.WriteBlock(regs.offset_out, write_buffer.data(), dst_size);
}
void MaxwellDMA::CopyPitchToBlockLinear() {
UNIMPLEMENTED_IF_MSG(regs.dst_params.block_size.width != 0, "Block width is not one");
UNIMPLEMENTED_IF(regs.dst_params.layer != 0);
const bool is_remapping = regs.launch_dma.remap_enable != 0;
const u32 num_remap_components = regs.remap_const.num_dst_components_minus_one + 1;
const u32 remap_components_size = regs.remap_const.component_size_minus_one + 1;
const auto& dst_params = regs.dst_params;
const u32 base_bpp = !is_remapping ? 1U : num_remap_components * remap_components_size;
u32 width = dst_params.width;
u32 x_elements = regs.line_length_in;
u32 x_offset = dst_params.origin.x;
u32 bpp_shift = 0U;
if (!is_remapping) {
bpp_shift = Common::FoldRight(
4U, [](u32 x, u32 y) { return std::min(x, static_cast<u32>(std::countr_zero(y))); },
width, x_elements, x_offset, static_cast<u32>(regs.offset_out));
width >>= bpp_shift;
x_elements >>= bpp_shift;
x_offset >>= bpp_shift;
}
const u32 bytes_per_pixel = base_bpp << bpp_shift;
const u32 height = dst_params.height;
const u32 depth = dst_params.depth;
const u32 block_height = dst_params.block_size.height;
const u32 block_depth = dst_params.block_size.depth;
const size_t dst_size =
CalculateSize(true, bytes_per_pixel, width, height, depth, block_height, block_depth);
const size_t src_size = static_cast<size_t>(regs.pitch_in) * regs.line_count;
read_buffer.resize_destructive(src_size);
write_buffer.resize_destructive(dst_size);
memory_manager.ReadBlock(regs.offset_in, read_buffer.data(), src_size);
if (Settings::IsGPULevelExtreme()) {
memory_manager.ReadBlock(regs.offset_out, write_buffer.data(), dst_size);
} else {
memory_manager.ReadBlockUnsafe(regs.offset_out, write_buffer.data(), dst_size);
}
// If the input is linear and the output is tiled, swizzle the input and copy it over.
SwizzleSubrect(write_buffer, read_buffer, bytes_per_pixel, width, height, depth, x_offset,
dst_params.origin.y, x_elements, regs.line_count, block_height, block_depth,
regs.pitch_in);
memory_manager.WriteBlock(regs.offset_out, write_buffer.data(), dst_size);
}
void MaxwellDMA::FastCopyBlockLinearToPitch() {
const u32 bytes_per_pixel = 1U;
const size_t src_size = GOB_SIZE;
const size_t dst_size = static_cast<size_t>(regs.pitch_out) * regs.line_count;
u32 pos_x = regs.src_params.origin.x;
u32 pos_y = regs.src_params.origin.y;
const u64 offset = GetGOBOffset(regs.src_params.width, regs.src_params.height, pos_x, pos_y,
regs.src_params.block_size.height, bytes_per_pixel);
const u32 x_in_gob = 64 / bytes_per_pixel;
pos_x = pos_x % x_in_gob;
pos_y = pos_y % 8;
read_buffer.resize_destructive(src_size);
write_buffer.resize_destructive(dst_size);
if (Settings::IsGPULevelExtreme()) {
memory_manager.ReadBlock(regs.offset_in + offset, read_buffer.data(), src_size);
memory_manager.ReadBlock(regs.offset_out, write_buffer.data(), dst_size);
} else {
memory_manager.ReadBlockUnsafe(regs.offset_in + offset, read_buffer.data(), src_size);
memory_manager.ReadBlockUnsafe(regs.offset_out, write_buffer.data(), dst_size);
}
UnswizzleSubrect(write_buffer, read_buffer, bytes_per_pixel, regs.src_params.width,
regs.src_params.height, 1, pos_x, pos_y, regs.line_length_in, regs.line_count,
regs.src_params.block_size.height, regs.src_params.block_size.depth,
regs.pitch_out);
memory_manager.WriteBlock(regs.offset_out, write_buffer.data(), dst_size);
}
void MaxwellDMA::CopyBlockLinearToBlockLinear() {
UNIMPLEMENTED_IF(regs.src_params.block_size.width != 0);
const bool is_remapping = regs.launch_dma.remap_enable != 0;
// Deswizzle the input and copy it over.
const Parameters& src = regs.src_params;
const Parameters& dst = regs.dst_params;
const u32 num_remap_components = regs.remap_const.num_dst_components_minus_one + 1;
const u32 remap_components_size = regs.remap_const.component_size_minus_one + 1;
const u32 base_bpp = !is_remapping ? 1U : num_remap_components * remap_components_size;
u32 src_width = src.width;
u32 dst_width = dst.width;
u32 x_elements = regs.line_length_in;
u32 src_x_offset = src.origin.x;
u32 dst_x_offset = dst.origin.x;
u32 bpp_shift = 0U;
if (!is_remapping) {
bpp_shift = Common::FoldRight(
4U, [](u32 x, u32 y) { return std::min(x, static_cast<u32>(std::countr_zero(y))); },
src_width, dst_width, x_elements, src_x_offset, dst_x_offset,
static_cast<u32>(regs.offset_in), static_cast<u32>(regs.offset_out));
src_width >>= bpp_shift;
dst_width >>= bpp_shift;
x_elements >>= bpp_shift;
src_x_offset >>= bpp_shift;
dst_x_offset >>= bpp_shift;
}
const u32 bytes_per_pixel = base_bpp << bpp_shift;
const size_t src_size = CalculateSize(true, bytes_per_pixel, src_width, src.height, src.depth,
src.block_size.height, src.block_size.depth);
const size_t dst_size = CalculateSize(true, bytes_per_pixel, dst_width, dst.height, dst.depth,
dst.block_size.height, dst.block_size.depth);
const u32 pitch = x_elements * bytes_per_pixel;
const size_t mid_buffer_size = pitch * regs.line_count;
read_buffer.resize_destructive(src_size);
write_buffer.resize_destructive(dst_size);
intermediate_buffer.resize_destructive(mid_buffer_size);
memory_manager.ReadBlock(regs.offset_in, read_buffer.data(), src_size);
memory_manager.ReadBlock(regs.offset_out, write_buffer.data(), dst_size);
UnswizzleSubrect(intermediate_buffer, read_buffer, bytes_per_pixel, src_width, src.height,
src.depth, src_x_offset, src.origin.y, x_elements, regs.line_count,
src.block_size.height, src.block_size.depth, pitch);
SwizzleSubrect(write_buffer, intermediate_buffer, bytes_per_pixel, dst_width, dst.height,
dst.depth, dst_x_offset, dst.origin.y, x_elements, regs.line_count,
dst.block_size.height, dst.block_size.depth, pitch);
memory_manager.WriteBlock(regs.offset_out, write_buffer.data(), dst_size);
}
void MaxwellDMA::ReleaseSemaphore() {
const auto type = regs.launch_dma.semaphore_type;
const GPUVAddr address = regs.semaphore.address;
const u32 payload = regs.semaphore.payload;
switch (type) {
case LaunchDMA::SemaphoreType::NONE:
break;
case LaunchDMA::SemaphoreType::RELEASE_ONE_WORD_SEMAPHORE: {
std::function<void()> operation(
[this, address, payload] { memory_manager.Write<u32>(address, payload); });
rasterizer->SignalFence(std::move(operation));
break;
}
case LaunchDMA::SemaphoreType::RELEASE_FOUR_WORD_SEMAPHORE: {
std::function<void()> operation([this, address, payload] {
memory_manager.Write<u64>(address + sizeof(u64), system.GPU().GetTicks());
memory_manager.Write<u64>(address, payload);
});
rasterizer->SignalFence(std::move(operation));
break;
}
default:
ASSERT_MSG(false, "Unknown semaphore type: {}", static_cast<u32>(type.Value()));
break;
}
}
} // namespace Tegra::Engines
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