diff options
| -rw-r--r-- | src/core/hw/gpu.cpp | 42 |
1 files changed, 20 insertions, 22 deletions
diff --git a/src/core/hw/gpu.cpp b/src/core/hw/gpu.cpp index 67a8bc324..7e70b34c1 100644 --- a/src/core/hw/gpu.cpp +++ b/src/core/hw/gpu.cpp @@ -21,12 +21,10 @@ namespace GPU { Regs g_regs; -u32 g_cur_line = 0; ///< Current vertical screen line -u64 g_last_line_ticks = 0; ///< CPU tick count from last vertical screen line -u64 g_last_frame_ticks = 0; ///< CPU tick count from last frame - -static u32 kFrameCycles = 0; ///< 268MHz / 60 frames per second -static u32 kFrameTicks = 0; ///< Approximate number of instructions/frame +static u64 frame_ticks = 0; ///< 268MHz / 60 frames per second +static u32 cur_line = 0; ///< Current vertical screen line +static u64 last_frame_ticks = 0; ///< CPU tick count from last frame +static u64 last_update_tick = 0; ///< CPU ticl count from last GPU update template <typename T> inline void Read(T &var, const u32 raw_addr) { @@ -34,7 +32,7 @@ inline void Read(T &var, const u32 raw_addr) { u32 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) { + if (index >= Regs::NumIds() || !std::is_same<T, u32>::value) { LOG_ERROR(HW_GPU, "unknown Read%lu @ 0x%08X", sizeof(var) * 8, addr); return; } @@ -48,7 +46,7 @@ inline void Write(u32 addr, const T data) { u32 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) { + if (index >= Regs::NumIds() || !std::is_same<T, u32>::value) { LOG_ERROR(HW_GPU, "unknown Write%lu 0x%08X @ 0x%08X", sizeof(data) * 8, (u32)data, addr); return; } @@ -179,7 +177,6 @@ template void Write<u8>(u32 addr, const u8 data); /// Update hardware void Update() { auto& framebuffer_top = g_regs.framebuffer_config[0]; - u64 current_ticks = Core::g_app_core->GetTicks(); // Update the frame after a certain number of CPU ticks have elapsed. This assumes that the // active frame in memory is always complete to render. There also may be issues with this @@ -189,9 +186,9 @@ void Update() { // primitive homebrew relies on a vertical blank interrupt to happen inevitably (regardless of a // threading reschedule). - if ((current_ticks - g_last_frame_ticks) > GPU::kFrameTicks) { + if ((Core::g_app_core->GetTicks() - last_frame_ticks) > (GPU::frame_ticks)) { VideoCore::g_renderer->SwapBuffers(); - g_last_frame_ticks = current_ticks; + last_frame_ticks = Core::g_app_core->GetTicks(); } // Synchronize GPU on a thread reschedule: Because we cannot accurately predict a vertical @@ -199,17 +196,20 @@ void Update() { // accurately when this is signalled between thread switches. if (HLE::g_reschedule) { + u64 current_ticks = Core::g_app_core->GetTicks(); + u64 line_ticks = (GPU::frame_ticks / framebuffer_top.height) * 16; - // Synchronize line... - if ((current_ticks - g_last_line_ticks) >= GPU::kFrameTicks / framebuffer_top.height) { + //// Synchronize line... + if ((current_ticks - last_update_tick) >= line_ticks) { GSP_GPU::SignalInterrupt(GSP_GPU::InterruptId::PDC0); - g_cur_line++; - g_last_line_ticks = current_ticks; + cur_line++; + last_update_tick += line_ticks; } // Synchronize frame... - if (g_cur_line >= framebuffer_top.height) { - g_cur_line = 0; + if (cur_line >= framebuffer_top.height) { + cur_line = 0; + VideoCore::g_renderer->SwapBuffers(); GSP_GPU::SignalInterrupt(GSP_GPU::InterruptId::PDC1); } } @@ -217,11 +217,9 @@ void Update() { /// Initialize hardware void Init() { - kFrameCycles = 268123480 / Settings::values.gpu_refresh_rate; - kFrameTicks = kFrameCycles / 3; - - g_cur_line = 0; - g_last_frame_ticks = g_last_line_ticks = Core::g_app_core->GetTicks(); + frame_ticks = 268123480 / Settings::values.gpu_refresh_rate; + cur_line = 0; + last_update_tick = last_frame_ticks = Core::g_app_core->GetTicks(); auto& framebuffer_top = g_regs.framebuffer_config[0]; auto& framebuffer_sub = g_regs.framebuffer_config[1]; |