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Code Issues Releases Activity

Fixes and Corrections to DMA Engine

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This commit is contained in:
Fernando Sahmkow 2019-04-23 12:41:55 -04:00 committed by FernandoS27
parent f1e5314f1a
commit b3118ee316
2 changed files with 58 additions and 38 deletions
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85
src/video_core/engines/maxwell_dma.cpp
View file

@ -83,57 +83,66 @@ void MaxwellDMA::HandleCopy() {
ASSERT(regs.exec.enable_2d == 1);
const std::size_t copy_size = regs.x_count * regs.y_count;
auto source_ptr{memory_manager.GetPointer(source)};
auto dst_ptr{memory_manager.GetPointer(dest)};
if (!source_ptr) {
LOG_ERROR(HW_GPU, "source_ptr is invalid");
return;
}
if (!dst_ptr) {
LOG_ERROR(HW_GPU, "dst_ptr is invalid");
return;
}
const auto FlushAndInvalidate = [&](u32 src_size, u64 dst_size) {
// TODO(Subv): For now, manually flush the regions until we implement GPU-accelerated
// copying.
rasterizer.FlushRegion(ToCacheAddr(source_ptr), src_size);
// We have to invalidate the destination region to evict any outdated surfaces from the
// cache. We do this before actually writing the new data because the destination address
// might contain a dirty surface that will have to be written back to memory.
rasterizer.InvalidateRegion(ToCacheAddr(dst_ptr), dst_size);
};
if (regs.exec.is_dst_linear && !regs.exec.is_src_linear) {
ASSERT(regs.src_params.size_z == 1);
// If the input is tiled and the output is linear, deswizzle the input and copy it over.
const u32 src_bytes_per_pixel = regs.src_pitch / regs.src_params.size_x;
const std::size_t src_size = Texture::CalculateSize(
true, src_bytes_per_pixel, regs.src_params.size_x, regs.src_params.size_y,
regs.src_params.size_z, regs.src_params.BlockHeight(), regs.src_params.BlockDepth());
FlushAndInvalidate(regs.src_pitch * regs.src_params.size_y,
copy_size * src_bytes_per_pixel);
const std::size_t dst_size = regs.dst_pitch * regs.y_count;
if (read_buffer.size() < src_size) {
read_buffer.resize(src_size);
}
if (write_buffer.size() < dst_size) {
write_buffer.resize(dst_size);
}
memory_manager.ReadBlock(source, read_buffer.data(), src_size);
memory_manager.ReadBlock(dest, write_buffer.data(), dst_size);
Texture::UnswizzleSubrect(regs.x_count, regs.y_count, regs.dst_pitch,
regs.src_params.size_x, src_bytes_per_pixel, source_ptr, dst_ptr,
regs.src_params.BlockHeight(), regs.src_params.pos_x,
regs.src_params.pos_y);
regs.src_params.size_x, src_bytes_per_pixel, read_buffer.data(),
write_buffer.data(), regs.src_params.BlockHeight(),
regs.src_params.pos_x, regs.src_params.pos_y);
memory_manager.WriteBlock(dest, write_buffer.data(), dst_size);
} else {
ASSERT(regs.dst_params.size_z == 1);
ASSERT(regs.src_pitch == regs.x_count);
ASSERT(regs.dst_params.BlockDepth() == 1);
const u32 src_bpp = regs.src_pitch / regs.x_count;
const u32 src_bytes_per_pixel = regs.src_pitch / regs.x_count;
FlushAndInvalidate(regs.src_pitch * regs.y_count,
regs.dst_params.size_x * regs.dst_params.size_y * src_bpp);
const std::size_t dst_size = Texture::CalculateSize(
true, src_bytes_per_pixel, regs.dst_params.size_x, regs.dst_params.size_y,
regs.dst_params.size_z, regs.dst_params.BlockHeight(), regs.dst_params.BlockDepth());
const std::size_t dst_layer_size = Texture::CalculateSize(
true, src_bytes_per_pixel, regs.dst_params.size_x, regs.dst_params.size_y, 1,
regs.dst_params.BlockHeight(), regs.dst_params.BlockDepth());
const std::size_t src_size = regs.src_pitch * regs.y_count;
if (read_buffer.size() < src_size) {
read_buffer.resize(src_size);
}
if (write_buffer.size() < dst_size) {
write_buffer.resize(dst_size);
}
memory_manager.ReadBlock(source, read_buffer.data(), src_size);
memory_manager.ReadBlock(dest, write_buffer.data(), dst_size);
// If the input is linear and the output is tiled, swizzle the input and copy it over.
Texture::SwizzleSubrect(regs.x_count, regs.y_count, regs.src_pitch, regs.dst_params.size_x,
src_bpp, dst_ptr, source_ptr, regs.dst_params.BlockHeight());
src_bytes_per_pixel,
write_buffer.data() + dst_layer_size * regs.dst_params.pos_z,
read_buffer.data(), regs.dst_params.BlockHeight());
memory_manager.WriteBlock(dest, write_buffer.data(), dst_size);
}
}

11
src/video_core/engines/maxwell_dma.h
View file

@ -6,6 +6,7 @@
#include <array>
#include <cstddef>
#include <vector>
#include "common/bit_field.h"
#include "common/common_funcs.h"
#include "common/common_types.h"
@ -155,6 +156,13 @@ public:
BitField<16, 2, u32> component_size;
BitField<20, 3, u32> src_num_components;
BitField<24, 3, u32> dst_num_components;
u32 SrcBytePerPixel() const {
return src_num_components.Value() * component_size.Value();
}
u32 DstBytePerPixel() const {
return dst_num_components.Value() * component_size.Value();
}
} swizzle_config;
Parameters dst_params;
@ -176,6 +184,9 @@ private:
MemoryManager& memory_manager;
std::vector<u8> read_buffer;
std::vector<u8> write_buffer;
/// Performs the copy from the source buffer to the destination buffer as configured in the
/// registers.
void HandleCopy();