aiden
/
duckstation
mirror of https://github.com/stenzek/duckstation
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

GPU: Make VRAM a global object

Browse Source
pull/3124/head
Stenzek 2 years ago
parent 7340324ed9
commit 411213d6a0
No known key found for this signature in database
10 changed files with 50 additions and 69 deletions
Show Stats Download Patch File Download Diff File

31
src/core/gpu.cpp
Unescape Escape View File

@ -33,6 +33,7 @@
Log_SetChannel(GPU);
std::unique_ptr<GPU> g_gpu;
alignas(HOST_PAGE_SIZE) u16 g_vram[VRAM_SIZE / sizeof(u16)];
const GPU::GP0CommandHandlerTable GPU::s_GP0_command_handler_table = GPU::GenerateGP0CommandHandlerTable();
@ -132,6 +133,10 @@ void GPU::Reset(bool clear_vram)
m_crtc_state.in_vblank = false;
m_crtc_state.interlaced_field = 0;
m_crtc_state.interlaced_display_field = 0;
if (clear_vram)
std::memset(g_vram, 0, sizeof(g_vram));
SoftReset();
UpdateDisplay();
}
@ -300,7 +305,7 @@ bool GPU::DoState(StateWrapper& sw, GPUTexture** host_texture, bool update_displ
else
{
ReadVRAM(0, 0, VRAM_WIDTH, VRAM_HEIGHT);
sw.DoBytes(m_vram_ptr, VRAM_WIDTH * VRAM_HEIGHT * sizeof(u16));
sw.DoBytes(g_vram, VRAM_WIDTH * VRAM_HEIGHT * sizeof(u16));
}
}
@ -1074,7 +1079,7 @@ u32 GPU::ReadGPUREAD()
// Read with correct wrap-around behavior.
const u16 read_x = (m_vram_transfer.x + m_vram_transfer.col) % VRAM_WIDTH;
const u16 read_y = (m_vram_transfer.y + m_vram_transfer.row) % VRAM_HEIGHT;
value |= ZeroExtend32(m_vram_ptr[read_y * VRAM_WIDTH + read_x]) << (i * 16);
value |= ZeroExtend32(g_vram[read_y * VRAM_WIDTH + read_x]) << (i * 16);
if (++m_vram_transfer.col == m_vram_transfer.width)
{
@ -1357,7 +1362,7 @@ void GPU::FillVRAM(u32 x, u32 y, u32 width, u32 height, u32 color)
for (u32 yoffs = 0; yoffs < height; yoffs++)
{
const u32 row = (y + yoffs) % VRAM_HEIGHT;
std::fill_n(&m_vram_ptr[row * VRAM_WIDTH + x], width, color16);
std::fill_n(&g_vram[row * VRAM_WIDTH + x], width, color16);
}
}
else if (IsInterlacedRenderingEnabled())
@ -1373,7 +1378,7 @@ void GPU::FillVRAM(u32 x, u32 y, u32 width, u32 height, u32 color)
if ((row & u32(1)) == active_field)
continue;
u16* row_ptr = &m_vram_ptr[row * VRAM_WIDTH];
u16* row_ptr = &g_vram[row * VRAM_WIDTH];
for (u32 xoffs = 0; xoffs < width; xoffs++)
{
const u32 col = (x + xoffs) % VRAM_WIDTH;
@ -1386,7 +1391,7 @@ void GPU::FillVRAM(u32 x, u32 y, u32 width, u32 height, u32 color)
for (u32 yoffs = 0; yoffs < height; yoffs++)
{
const u32 row = (y + yoffs) % VRAM_HEIGHT;
u16* row_ptr = &m_vram_ptr[row * VRAM_WIDTH];
u16* row_ptr = &g_vram[row * VRAM_WIDTH];
for (u32 xoffs = 0; xoffs < width; xoffs++)
{
const u32 col = (x + xoffs) % VRAM_WIDTH;
@ -1402,7 +1407,7 @@ void GPU::UpdateVRAM(u32 x, u32 y, u32 width, u32 height, const void* data, bool
if ((x + width) <= VRAM_WIDTH && (y + height) <= VRAM_HEIGHT && !set_mask && !check_mask)
{
const u16* src_ptr = static_cast<const u16*>(data);
u16* dst_ptr = &m_vram_ptr[y * VRAM_WIDTH + x];
u16* dst_ptr = &g_vram[y * VRAM_WIDTH + x];
for (u32 yoffs = 0; yoffs < height; yoffs++)
{
std::copy_n(src_ptr, width, dst_ptr);
@ -1420,7 +1425,7 @@ void GPU::UpdateVRAM(u32 x, u32 y, u32 width, u32 height, const void* data, bool
for (u32 row = 0; row < height;)
{
u16* dst_row_ptr = &m_vram_ptr[((y + row++) % VRAM_HEIGHT) * VRAM_WIDTH];
u16* dst_row_ptr = &g_vram[((y + row++) % VRAM_HEIGHT) * VRAM_WIDTH];
for (u32 col = 0; col < width;)
{
// TODO: Handle unaligned reads...
@ -1475,8 +1480,8 @@ void GPU::CopyVRAM(u32 src_x, u32 src_y, u32 dst_x, u32 dst_y, u32 width, u32 he
{
for (u32 row = 0; row < height; row++)
{
const u16* src_row_ptr = &m_vram_ptr[((src_y + row) % VRAM_HEIGHT) * VRAM_WIDTH];
u16* dst_row_ptr = &m_vram_ptr[((dst_y + row) % VRAM_HEIGHT) * VRAM_WIDTH];
const u16* src_row_ptr = &g_vram[((src_y + row) % VRAM_HEIGHT) * VRAM_WIDTH];
u16* dst_row_ptr = &g_vram[((dst_y + row) % VRAM_HEIGHT) * VRAM_WIDTH];
for (s32 col = static_cast<s32>(width - 1); col >= 0; col--)
{
@ -1491,8 +1496,8 @@ void GPU::CopyVRAM(u32 src_x, u32 src_y, u32 dst_x, u32 dst_y, u32 width, u32 he
{
for (u32 row = 0; row < height; row++)
{
const u16* src_row_ptr = &m_vram_ptr[((src_y + row) % VRAM_HEIGHT) * VRAM_WIDTH];
u16* dst_row_ptr = &m_vram_ptr[((dst_y + row) % VRAM_HEIGHT) * VRAM_WIDTH];
const u16* src_row_ptr = &g_vram[((src_y + row) % VRAM_HEIGHT) * VRAM_WIDTH];
u16* dst_row_ptr = &g_vram[((dst_y + row) % VRAM_HEIGHT) * VRAM_WIDTH];
for (u32 col = 0; col < width; col++)
{
@ -2175,11 +2180,11 @@ bool GPU::DumpVRAMToFile(const char* filename)
const char* extension = std::strrchr(filename, '.');
if (extension && StringUtil::Strcasecmp(extension, ".png") == 0)
{
return DumpVRAMToFile(filename, VRAM_WIDTH, VRAM_HEIGHT, sizeof(u16) * VRAM_WIDTH, m_vram_ptr, true);
return DumpVRAMToFile(filename, VRAM_WIDTH, VRAM_HEIGHT, sizeof(u16) * VRAM_WIDTH, g_vram, true);
}
else if (extension && StringUtil::Strcasecmp(extension, ".bin") == 0)
{
return FileSystem::WriteBinaryFile(filename, m_vram_ptr, VRAM_WIDTH * VRAM_HEIGHT * sizeof(u16));
return FileSystem::WriteBinaryFile(filename, g_vram, VRAM_WIDTH * VRAM_HEIGHT * sizeof(u16));
}
else
{

5
src/core/gpu.h
Unescape Escape View File

@ -11,6 +11,7 @@
#include "common/bitfield.h"
#include "common/fifo_queue.h"
#include "common/rectangle.h"
#include "common/types.h"
#include <algorithm>
#include <array>
@ -359,9 +360,6 @@ protected:
std::unique_ptr<TimingEvent> m_crtc_tick_event;
std::unique_ptr<TimingEvent> m_command_tick_event;
// Pointer to VRAM, used for reads/writes. In the hardware backends, this is the shadow buffer.
u16* m_vram_ptr = nullptr;
union GPUSTAT
{
u32 bits;
@ -651,3 +649,4 @@ private:
};
extern std::unique_ptr<GPU> g_gpu;
extern u16 g_vram[VRAM_SIZE / sizeof(u16)];

2
src/core/gpu_backend.cpp
Unescape Escape View File

@ -23,7 +23,7 @@ bool GPUBackend::Initialize(bool force_thread)
return true;
}
void GPUBackend::Reset(bool clear_vram)
void GPUBackend::Reset()
{
Sync(true);
m_drawing_area = {};

5
src/core/gpu_backend.h
Unescape Escape View File

@ -22,12 +22,11 @@ public:
GPUBackend();
virtual ~GPUBackend();
ALWAYS_INLINE u16* GetVRAM() const { return m_vram_ptr; }
ALWAYS_INLINE const Threading::Thread* GetThread() const { return m_use_gpu_thread ? &m_gpu_thread : nullptr; }
virtual bool Initialize(bool force_thread);
virtual void UpdateSettings();
virtual void Reset(bool clear_vram);
virtual void Reset();
virtual void Shutdown();
GPUBackendFillVRAMCommand* NewFillVRAMCommand();
@ -64,8 +63,6 @@ protected:
void HandleCommand(const GPUBackendCommand* cmd);
u16* m_vram_ptr = nullptr;
Common::Rectangle<u32> m_drawing_area{};
Threading::KernelSemaphore m_sync_semaphore;

2
src/core/gpu_commands.cpp
Unescape Escape View File

@ -582,7 +582,7 @@ bool GPU::HandleCopyRectangleVRAMToCPUCommand()
{
DumpVRAMToFile(TinyString::from_format("vram_to_cpu_copy_{}.png", s_vram_to_cpu_dump_id++), m_vram_transfer.width,
m_vram_transfer.height, sizeof(u16) * VRAM_WIDTH,
&m_vram_ptr[m_vram_transfer.y * VRAM_WIDTH + m_vram_transfer.x], true);
&g_vram[m_vram_transfer.y * VRAM_WIDTH + m_vram_transfer.x], true);
}
// switch to pixel-by-pixel read state

13
src/core/gpu_hw.cpp
Unescape Escape View File

@ -130,8 +130,6 @@ private:
GPU_HW::GPU_HW() : GPU()
{
m_vram_ptr = m_vram_shadow.data();
#ifdef _DEBUG
s_draw_number = 0;
#endif
@ -251,9 +249,8 @@ void GPU_HW::Reset(bool clear_vram)
m_batch_current_vertex_ptr = m_batch_start_vertex_ptr;
m_vram_shadow.fill(0);
if (m_sw_renderer)
m_sw_renderer->Reset(clear_vram);
m_sw_renderer->Reset();
m_batch = {};
m_batch_ubo_data = {};
@ -442,7 +439,7 @@ void GPU_HW::UpdateSettings(const Settings& old_settings)
Panic("Failed to recreate buffers.");
RestoreDeviceContext();
UpdateVRAM(0, 0, VRAM_WIDTH, VRAM_HEIGHT, m_vram_ptr, false, false);
UpdateVRAM(0, 0, VRAM_WIDTH, VRAM_HEIGHT, g_vram, false, false);
UpdateDepthBufferFromMaskBit();
UpdateDisplay();
}
@ -2291,8 +2288,6 @@ void GPU_HW::UpdateSoftwareRenderer(bool copy_vram_from_hw)
if (current_enabled == new_enabled)
return;
m_vram_ptr = m_vram_shadow.data();
if (!new_enabled)
{
if (m_sw_renderer)
@ -2310,7 +2305,6 @@ void GPU_HW::UpdateSoftwareRenderer(bool copy_vram_from_hw)
{
FlushRender();
ReadVRAM(0, 0, VRAM_WIDTH, VRAM_HEIGHT);
std::memcpy(sw_renderer->GetVRAM(), m_vram_ptr, sizeof(u16) * VRAM_WIDTH * VRAM_HEIGHT);
// Sync the drawing area.
GPUBackendSetDrawingAreaCommand* cmd = sw_renderer->NewSetDrawingAreaCommand();
@ -2319,7 +2313,6 @@ void GPU_HW::UpdateSoftwareRenderer(bool copy_vram_from_hw)
}
m_sw_renderer = std::move(sw_renderer);
m_vram_ptr = m_sw_renderer->GetVRAM();
}
void GPU_HW::FillBackendCommandParameters(GPUBackendCommand* cmd) const
@ -2429,7 +2422,7 @@ void GPU_HW::ReadVRAM(u32 x, u32 y, u32 width, u32 height)
// Stage the readback and copy it into our shadow buffer.
g_gpu_device->DownloadTexture(m_vram_readback_texture.get(), 0, 0, encoded_width, encoded_height,
reinterpret_cast<u32*>(&m_vram_shadow[copy_rect.top * VRAM_WIDTH + copy_rect.left]),
reinterpret_cast<u32*>(&g_vram[copy_rect.top * VRAM_WIDTH + copy_rect.left]),
VRAM_WIDTH * sizeof(u16));
RestoreDeviceContext();

2
src/core/gpu_hw.h
Unescape Escape View File

@ -222,8 +222,6 @@ private:
std::unique_ptr<GPUTextureBuffer> m_vram_upload_buffer;
std::unique_ptr<GPUTexture> m_vram_write_texture;
FixedHeapArray<u16, VRAM_WIDTH * VRAM_HEIGHT> m_vram_shadow;
std::unique_ptr<GPU_SW_Backend> m_sw_renderer;
BatchVertex* m_batch_start_vertex_ptr = nullptr;

15
src/core/gpu_sw.cpp
Unescape Escape View File

@ -24,10 +24,7 @@ ALWAYS_INLINE static constexpr std::tuple<T, T> MinMax(T v1, T v2)
return std::tie(v1, v2);
}
GPU_SW::GPU_SW()
{
m_vram_ptr = m_backend.GetVRAM();
}
GPU_SW::GPU_SW() = default;
GPU_SW::~GPU_SW()
{
@ -84,7 +81,7 @@ void GPU_SW::Reset(bool clear_vram)
{
GPU::Reset(clear_vram);
m_backend.Reset(clear_vram);
m_backend.Reset();
}
void GPU_SW::UpdateSettings(const Settings& old_settings)
@ -269,7 +266,7 @@ void GPU_SW::CopyOut15Bit(u32 src_x, u32 src_y, u32 width, u32 height, u32 field
const u32 rows = height >> interlaced_shift;
dst_stride <<= interlaced_shift;
const u16* src_ptr = &m_vram_ptr[src_y * VRAM_WIDTH + src_x];
const u16* src_ptr = &g_vram[src_y * VRAM_WIDTH + src_x];
const u32 src_step = VRAM_WIDTH << interleaved_shift;
for (u32 row = 0; row < rows; row++)
{
@ -286,7 +283,7 @@ void GPU_SW::CopyOut15Bit(u32 src_x, u32 src_y, u32 width, u32 height, u32 field
const u32 end_x = src_x + width;
for (u32 row = 0; row < rows; row++)
{
const u16* src_row_ptr = &m_vram_ptr[(src_y % VRAM_HEIGHT) * VRAM_WIDTH];
const u16* src_row_ptr = &g_vram[(src_y % VRAM_HEIGHT) * VRAM_WIDTH];
OutputPixelType* dst_row_ptr = reinterpret_cast<OutputPixelType*>(dst_ptr);
for (u32 col = src_x; col < end_x; col++)
@ -352,7 +349,7 @@ void GPU_SW::CopyOut24Bit(u32 src_x, u32 src_y, u32 skip_x, u32 width, u32 heigh
if ((src_x + width) <= VRAM_WIDTH && (src_y + (rows << interleaved_shift)) <= VRAM_HEIGHT)
{
const u8* src_ptr = reinterpret_cast<const u8*>(&m_vram_ptr[src_y * VRAM_WIDTH + src_x]) + (skip_x * 3);
const u8* src_ptr = reinterpret_cast<const u8*>(&g_vram[src_y * VRAM_WIDTH + src_x]) + (skip_x * 3);
const u32 src_stride = (VRAM_WIDTH << interleaved_shift) * sizeof(u16);
for (u32 row = 0; row < rows; row++)
{
@ -412,7 +409,7 @@ void GPU_SW::CopyOut24Bit(u32 src_x, u32 src_y, u32 skip_x, u32 width, u32 heigh
{
for (u32 row = 0; row < rows; row++)
{
const u16* src_row_ptr = &m_vram_ptr[(src_y % VRAM_HEIGHT) * VRAM_WIDTH];
const u16* src_row_ptr = &g_vram[(src_y % VRAM_HEIGHT) * VRAM_WIDTH];
OutputPixelType* dst_row_ptr = reinterpret_cast<OutputPixelType*>(dst_ptr);
for (u32 col = 0; col < width; col++)

32
src/core/gpu_sw_backend.cpp
Unescape Escape View File

@ -1,6 +1,7 @@
// SPDX-FileCopyrightText: 2019-2022 Connor McLaughlin <stenzek@gmail.com>
// SPDX-License-Identifier: (GPL-3.0 OR CC-BY-NC-ND-4.0)
#include "gpu.h"
#include "gpu_sw_backend.h"
#include "system.h"
@ -8,11 +9,7 @@
#include <algorithm>
GPU_SW_Backend::GPU_SW_Backend() : GPUBackend()
{
m_vram.fill(0);
m_vram_ptr = m_vram.data();
}
GPU_SW_Backend::GPU_SW_Backend() = default;
GPU_SW_Backend::~GPU_SW_Backend() = default;
@ -21,12 +18,9 @@ bool GPU_SW_Backend::Initialize(bool force_thread)
return GPUBackend::Initialize(force_thread);
}
void GPU_SW_Backend::Reset(bool clear_vram)
void GPU_SW_Backend::Reset()
{
GPUBackend::Reset(clear_vram);
if (clear_vram)
m_vram.fill(0);
GPUBackend::Reset();
}
void GPU_SW_Backend::DrawPolygon(const GPUBackendDrawPolygonCommand* cmd)
@ -728,7 +722,7 @@ void GPU_SW_Backend::FillVRAM(u32 x, u32 y, u32 width, u32 height, u32 color, GP
for (u32 yoffs = 0; yoffs < height; yoffs++)
{
const u32 row = (y + yoffs) % VRAM_HEIGHT;
std::fill_n(&m_vram_ptr[row * VRAM_WIDTH + x], width, color16);
std::fill_n(&g_vram[row * VRAM_WIDTH + x], width, color16);
}
}
else if (params.interlaced_rendering)
@ -741,7 +735,7 @@ void GPU_SW_Backend::FillVRAM(u32 x, u32 y, u32 width, u32 height, u32 color, GP
if ((row & u32(1)) == active_field)
continue;
u16* row_ptr = &m_vram_ptr[row * VRAM_WIDTH];
u16* row_ptr = &g_vram[row * VRAM_WIDTH];
for (u32 xoffs = 0; xoffs < width; xoffs++)
{
const u32 col = (x + xoffs) % VRAM_WIDTH;
@ -754,7 +748,7 @@ void GPU_SW_Backend::FillVRAM(u32 x, u32 y, u32 width, u32 height, u32 color, GP
for (u32 yoffs = 0; yoffs < height; yoffs++)
{
const u32 row = (y + yoffs) % VRAM_HEIGHT;
u16* row_ptr = &m_vram_ptr[row * VRAM_WIDTH];
u16* row_ptr = &g_vram[row * VRAM_WIDTH];
for (u32 xoffs = 0; xoffs < width; xoffs++)
{
const u32 col = (x + xoffs) % VRAM_WIDTH;
@ -771,7 +765,7 @@ void GPU_SW_Backend::UpdateVRAM(u32 x, u32 y, u32 width, u32 height, const void*
if ((x + width) <= VRAM_WIDTH && (y + height) <= VRAM_HEIGHT && !params.IsMaskingEnabled())
{
const u16* src_ptr = static_cast<const u16*>(data);
u16* dst_ptr = &m_vram_ptr[y * VRAM_WIDTH + x];
u16* dst_ptr = &g_vram[y * VRAM_WIDTH + x];
for (u32 yoffs = 0; yoffs < height; yoffs++)
{
std::copy_n(src_ptr, width, dst_ptr);
@ -788,7 +782,7 @@ void GPU_SW_Backend::UpdateVRAM(u32 x, u32 y, u32 width, u32 height, const void*
for (u32 row = 0; row < height;)
{
u16* dst_row_ptr = &m_vram_ptr[((y + row++) % VRAM_HEIGHT) * VRAM_WIDTH];
u16* dst_row_ptr = &g_vram[((y + row++) % VRAM_HEIGHT) * VRAM_WIDTH];
for (u32 col = 0; col < width;)
{
// TODO: Handle unaligned reads...
@ -844,8 +838,8 @@ void GPU_SW_Backend::CopyVRAM(u32 src_x, u32 src_y, u32 dst_x, u32 dst_y, u32 wi
{
for (u32 row = 0; row < height; row++)
{
const u16* src_row_ptr = &m_vram_ptr[((src_y + row) % VRAM_HEIGHT) * VRAM_WIDTH];
u16* dst_row_ptr = &m_vram_ptr[((dst_y + row) % VRAM_HEIGHT) * VRAM_WIDTH];
const u16* src_row_ptr = &g_vram[((src_y + row) % VRAM_HEIGHT) * VRAM_WIDTH];
u16* dst_row_ptr = &g_vram[((dst_y + row) % VRAM_HEIGHT) * VRAM_WIDTH];
for (s32 col = static_cast<s32>(width - 1); col >= 0; col--)
{
@ -860,8 +854,8 @@ void GPU_SW_Backend::CopyVRAM(u32 src_x, u32 src_y, u32 dst_x, u32 dst_y, u32 wi
{
for (u32 row = 0; row < height; row++)
{
const u16* src_row_ptr = &m_vram_ptr[((src_y + row) % VRAM_HEIGHT) * VRAM_WIDTH];
u16* dst_row_ptr = &m_vram_ptr[((dst_y + row) % VRAM_HEIGHT) * VRAM_WIDTH];
const u16* src_row_ptr = &g_vram[((src_y + row) % VRAM_HEIGHT) * VRAM_WIDTH];
u16* dst_row_ptr = &g_vram[((dst_y + row) % VRAM_HEIGHT) * VRAM_WIDTH];
for (u32 col = 0; col < width; col++)
{

12
src/core/gpu_sw_backend.h
Unescape Escape View File

@ -14,12 +14,12 @@ public:
~GPU_SW_Backend() override;
bool Initialize(bool force_thread) override;
void Reset(bool clear_vram) override;
void Reset() override;
ALWAYS_INLINE_RELEASE u16 GetPixel(const u32 x, const u32 y) const { return m_vram[VRAM_WIDTH * y + x]; }
ALWAYS_INLINE_RELEASE const u16* GetPixelPtr(const u32 x, const u32 y) const { return &m_vram[VRAM_WIDTH * y + x]; }
ALWAYS_INLINE_RELEASE u16* GetPixelPtr(const u32 x, const u32 y) { return &m_vram[VRAM_WIDTH * y + x]; }
ALWAYS_INLINE_RELEASE void SetPixel(const u32 x, const u32 y, const u16 value) { m_vram[VRAM_WIDTH * y + x] = value; }
ALWAYS_INLINE_RELEASE u16 GetPixel(const u32 x, const u32 y) const { return g_vram[VRAM_WIDTH * y + x]; }
ALWAYS_INLINE_RELEASE const u16* GetPixelPtr(const u32 x, const u32 y) const { return &g_vram[VRAM_WIDTH * y + x]; }
ALWAYS_INLINE_RELEASE u16* GetPixelPtr(const u32 x, const u32 y) { return &g_vram[VRAM_WIDTH * y + x]; }
ALWAYS_INLINE_RELEASE void SetPixel(const u32 x, const u32 y, const u16 value) { g_vram[VRAM_WIDTH * y + x] = value; }
// this is actually (31 * 255) >> 4) == 494, but to simplify addressing we use the next power of two (512)
static constexpr u32 DITHER_LUT_SIZE = 512;
@ -165,6 +165,4 @@ protected:
const GPUBackendDrawLineCommand::Vertex* p0,
const GPUBackendDrawLineCommand::Vertex* p1);
DrawLineFunction GetDrawLineFunction(bool shading_enable, bool transparency_enable, bool dithering_enable);
std::array<u16, VRAM_WIDTH * VRAM_HEIGHT> m_vram;
};

Write Preview
Loading…
Cancel
Save