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citra-canary/src/core/hw/gpu.cpp

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// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2
// Refer to the license.txt file included.
#include "common/common_types.h"
#include "common/log.h"
#include "core/core.h"
#include "core/mem_map.h"
#include "core/hle/hle.h"
#include "core/hle/kernel/thread.h"
#include "core/hle/service/gsp.h"
#include "core/hw/gpu.h"
#include "video_core/video_core.h"
namespace GPU {
RegisterSet<u32, Regs> g_regs;
u32 g_cur_line = 0; ///< Current vertical screen line
u64 g_last_ticks = 0; ///< Last CPU ticks
/**
* Sets whether the framebuffers are in the GSP heap (FCRAM) or VRAM
* @param
*/
void SetFramebufferLocation(const FramebufferLocation mode) {
switch (mode) {
case FRAMEBUFFER_LOCATION_FCRAM:
{
auto& framebuffer_top = g_regs.Get<Regs::FramebufferTop>();
auto& framebuffer_sub = g_regs.Get<Regs::FramebufferBottom>();
framebuffer_top.address_left1 = PADDR_TOP_LEFT_FRAME1;
framebuffer_top.address_left2 = PADDR_TOP_LEFT_FRAME2;
framebuffer_top.address_right1 = PADDR_TOP_RIGHT_FRAME1;
framebuffer_top.address_right2 = PADDR_TOP_RIGHT_FRAME2;
framebuffer_sub.address_left1 = PADDR_SUB_FRAME1;
//framebuffer_sub.address_left2 = unknown;
framebuffer_sub.address_right1 = PADDR_SUB_FRAME2;
//framebuffer_sub.address_right2 = unknown;
break;
}
case FRAMEBUFFER_LOCATION_VRAM:
{
auto& framebuffer_top = g_regs.Get<Regs::FramebufferTop>();
auto& framebuffer_sub = g_regs.Get<Regs::FramebufferBottom>();
framebuffer_top.address_left1 = PADDR_VRAM_TOP_LEFT_FRAME1;
framebuffer_top.address_left2 = PADDR_VRAM_TOP_LEFT_FRAME2;
framebuffer_top.address_right1 = PADDR_VRAM_TOP_RIGHT_FRAME1;
framebuffer_top.address_right2 = PADDR_VRAM_TOP_RIGHT_FRAME2;
framebuffer_sub.address_left1 = PADDR_VRAM_SUB_FRAME1;
//framebuffer_sub.address_left2 = unknown;
framebuffer_sub.address_right1 = PADDR_VRAM_SUB_FRAME2;
//framebuffer_sub.address_right2 = unknown;
break;
}
}
}
/**
* Gets the location of the framebuffers
* @return Location of framebuffers as FramebufferLocation enum
*/
FramebufferLocation GetFramebufferLocation(u32 address) {
if ((address & ~Memory::VRAM_MASK) == Memory::VRAM_PADDR) {
return FRAMEBUFFER_LOCATION_VRAM;
} else if ((address & ~Memory::FCRAM_MASK) == Memory::FCRAM_PADDR) {
return FRAMEBUFFER_LOCATION_FCRAM;
} else {
ERROR_LOG(GPU, "unknown framebuffer location!");
}
return FRAMEBUFFER_LOCATION_UNKNOWN;
}
u32 GetFramebufferAddr(const u32 address) {
switch (GetFramebufferLocation(address)) {
case FRAMEBUFFER_LOCATION_FCRAM:
return Memory::VirtualAddressFromPhysical_FCRAM(address);
case FRAMEBUFFER_LOCATION_VRAM:
return Memory::VirtualAddressFromPhysical_VRAM(address);
default:
ERROR_LOG(GPU, "unknown framebuffer location");
}
return 0;
}
/**
* Gets a read-only pointer to a framebuffer in memory
* @param address Physical address of framebuffer
* @return Returns const pointer to raw framebuffer
*/
const u8* GetFramebufferPointer(const u32 address) {
u32 addr = GetFramebufferAddr(address);
return (addr != 0) ? Memory::GetPointer(addr) : nullptr;
}
template <typename T>
inline void Read(T &var, const u32 raw_addr) {
u32 addr = raw_addr - 0x1EF00000;
int index = addr / 4;
// Reads other than u32 are untested, so I'd rather have them abort than silently fail
if (index >= Regs::NumIds || !std::is_same<T,u32>::value)
{
ERROR_LOG(GPU, "unknown Read%d @ 0x%08X", sizeof(var) * 8, addr);
return;
}
var = g_regs[static_cast<Regs::Id>(addr / 4)];
}
template <typename T>
inline void Write(u32 addr, const T data) {
addr -= 0x1EF00000;
int index = addr / 4;
// Writes other than u32 are untested, so I'd rather have them abort than silently fail
if (index >= Regs::NumIds || !std::is_same<T,u32>::value)
{
ERROR_LOG(GPU, "unknown Write%d 0x%08X @ 0x%08X", sizeof(data) * 8, data, addr);
return;
}
g_regs[static_cast<Regs::Id>(index)] = data;
switch (static_cast<Regs::Id>(index)) {
// Memory fills are triggered once the fill value is written.
// NOTE: This is not verified.
case Regs::MemoryFill + 3:
case Regs::MemoryFill + 7:
{
const auto& config = g_regs.Get<Regs::MemoryFill>(static_cast<Regs::Id>(index - 3));
// TODO: Not sure if this check should be done at GSP level instead
if (config.address_start) {
// TODO: Not sure if this algorithm is correct, particularly because it doesn't use the size member at all
u32* start = (u32*)Memory::GetPointer(config.GetStartAddress());
u32* end = (u32*)Memory::GetPointer(config.GetEndAddress());
for (u32* ptr = start; ptr < end; ++ptr)
*ptr = bswap32(config.value); // TODO: This is just a workaround to missing framebuffer format emulation
DEBUG_LOG(GPU, "MemoryFill from 0x%08x to 0x%08x", config.GetStartAddress(), config.GetEndAddress());
}
break;
}
case Regs::DisplayTransfer + 6:
{
const auto& config = g_regs.Get<Regs::DisplayTransfer>();
if (config.trigger & 1) {
u8* source_pointer = Memory::GetPointer(config.GetPhysicalInputAddress());
u8* dest_pointer = Memory::GetPointer(config.GetPhysicalOutputAddress());
for (int y = 0; y < config.output_height; ++y) {
// TODO: Why does the register seem to hold twice the framebuffer width?
for (int x = 0; x < config.output_width / 2; ++x) {
struct {
int r, g, b, a;
} source_color = { 0, 0, 0, 0 };
switch (config.input_format) {
case Regs::FramebufferFormat::RGBA8:
{
// TODO: Most likely got the component order messed up.
u8* srcptr = source_pointer + x * 4 + y * config.input_width * 4 / 2;
source_color.r = srcptr[0]; // blue
source_color.g = srcptr[1]; // green
source_color.b = srcptr[2]; // red
source_color.a = srcptr[3]; // alpha
break;
}
default:
ERROR_LOG(GPU, "Unknown source framebuffer format %x", config.input_format.Value());
break;
}
switch (config.output_format) {
/*case Regs::FramebufferFormat::RGBA8:
{
// TODO: Untested
u8* dstptr = (u32*)(dest_pointer + x * 4 + y * config.output_width * 4);
dstptr[0] = source_color.r;
dstptr[1] = source_color.g;
dstptr[2] = source_color.b;
dstptr[3] = source_color.a;
break;
}*/
case Regs::FramebufferFormat::RGB8:
{
// TODO: Most likely got the component order messed up.
u8* dstptr = dest_pointer + x * 3 + y * config.output_width * 3 / 2;
dstptr[0] = source_color.r; // blue
dstptr[1] = source_color.g; // green
dstptr[2] = source_color.b; // red
break;
}
default:
ERROR_LOG(GPU, "Unknown destination framebuffer format %x", config.output_format.Value());
break;
}
}
}
DEBUG_LOG(GPU, "DisplayTriggerTransfer: 0x%08x bytes from 0x%08x(%dx%d)-> 0x%08x(%dx%d), dst format %x",
config.output_height * config.output_width * 4,
config.GetPhysicalInputAddress(), (int)config.input_width, (int)config.input_height,
config.GetPhysicalOutputAddress(), (int)config.output_width, (int)config.output_height,
config.output_format.Value());
}
break;
}
case Regs::CommandProcessor + 4:
{
const auto& config = g_regs.Get<Regs::CommandProcessor>();
if (config.trigger & 1)
{
// u32* buffer = (u32*)Memory::GetPointer(config.address << 3);
ERROR_LOG(GPU, "Beginning 0x%08x bytes of commands from address 0x%08x", config.size, config.address << 3);
// TODO: Process command list!
}
break;
}
default:
break;
}
}
// Explicitly instantiate template functions because we aren't defining this in the header:
template void Read<u64>(u64 &var, const u32 addr);
template void Read<u32>(u32 &var, const u32 addr);
template void Read<u16>(u16 &var, const u32 addr);
template void Read<u8>(u8 &var, const u32 addr);
template void Write<u64>(u32 addr, const u64 data);
template void Write<u32>(u32 addr, const u32 data);
template void Write<u16>(u32 addr, const u16 data);
template void Write<u8>(u32 addr, const u8 data);
/// Update hardware
void Update() {
auto& framebuffer_top = g_regs.Get<Regs::FramebufferTop>();
u64 current_ticks = Core::g_app_core->GetTicks();
// Synchronize line...
if ((current_ticks - g_last_ticks) >= GPU::kFrameTicks / framebuffer_top.height) {
GSP_GPU::SignalInterrupt(GSP_GPU::InterruptId::PDC0);
g_cur_line++;
g_last_ticks = current_ticks;
}
// Synchronize frame...
if (g_cur_line >= framebuffer_top.height) {
g_cur_line = 0;
GSP_GPU::SignalInterrupt(GSP_GPU::InterruptId::PDC1);
VideoCore::g_renderer->SwapBuffers();
Kernel::WaitCurrentThread(WAITTYPE_VBLANK);
HLE::Reschedule(__func__);
}
}
/// Initialize hardware
void Init() {
g_cur_line = 0;
g_last_ticks = Core::g_app_core->GetTicks();
// SetFramebufferLocation(FRAMEBUFFER_LOCATION_FCRAM);
SetFramebufferLocation(FRAMEBUFFER_LOCATION_VRAM);
auto& framebuffer_top = g_regs.Get<Regs::FramebufferTop>();
auto& framebuffer_sub = g_regs.Get<Regs::FramebufferBottom>();
// TODO: Width should be 240 instead?
framebuffer_top.width = 480;
framebuffer_top.height = 400;
framebuffer_top.stride = 480*3;
framebuffer_top.color_format = Regs::FramebufferFormat::RGB8;
framebuffer_top.active_fb = 0;
framebuffer_sub.width = 480;
framebuffer_sub.height = 400;
framebuffer_sub.stride = 480*3;
framebuffer_sub.color_format = Regs::FramebufferFormat::RGB8;
framebuffer_sub.active_fb = 0;
NOTICE_LOG(GPU, "initialized OK");
}
/// Shutdown hardware
void Shutdown() {
NOTICE_LOG(GPU, "shutdown OK");
}
} // namespace
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