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Libretro: Reduce internal resolution (reduces GPU memory usage, and may fix some performance issues)

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This commit is contained in:
Sour 2018-01-08 19:34:46 -05:00
parent 161261ab89
commit c003ec90ea
2 changed files with 49 additions and 38 deletions
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46
Libretro/LibretroRenderer.h
View file

@ -2,13 +2,19 @@
#include "stdafx.h"
#include "../Core/IRenderingDevice.h"
#include "../Core/VideoRenderer.h"
#include "../Core/EmulationSettings.h"
#include "../Core/Console.h"
#include "../Utilities/nes_ntsc.h"
#include "libretro.h"
class LibretroRenderer : public IRenderingDevice
{
private:
retro_video_refresh_t _sendFrame = nullptr;
retro_environment_t _retroEnv = nullptr;
bool _skipMode = false;
int32_t _previousHeight = -1;
int32_t _previousWidth = -1;
public:
LibretroRenderer()
@ -25,13 +31,51 @@ public:
virtual void UpdateFrame(void *frameBuffer, uint32_t width, uint32_t height) override
{
if(!_skipMode && _sendFrame) {
//Use Blargg's NTSC filter's max size as a minimum resolution, to prevent changing resolution too often
int32_t newWidth = std::max<int32_t>(width, NES_NTSC_OUT_WIDTH(256));
int32_t newHeight = std::max<int32_t>(height, 480);
if(_previousWidth != newWidth || _previousHeight != newHeight) {
//Resolution change is needed
retro_system_av_info avInfo = {};
GetSystemAudioVideoInfo(avInfo, newWidth, newHeight);
_retroEnv(RETRO_ENVIRONMENT_SET_SYSTEM_AV_INFO, &avInfo);
_previousWidth = newWidth;
_previousHeight = newHeight;
}
_sendFrame(frameBuffer, width, height, sizeof(uint32_t) * width);
}
}
static void GetSystemAudioVideoInfo(retro_system_av_info &info, int32_t newHeight, int32_t newWidth)
{
info.timing.fps = Console::GetModel() == NesModel::NTSC ? 60.098811862348404716732985230828 : 50.006977968268290848936010226333;
info.timing.sample_rate = 48000;
void SetSendFrame(retro_video_refresh_t sendFrame)
float ratio = (float)EmulationSettings::GetAspectRatio();
if(ratio == 0.0f) {
ratio = 1.0f;
}
ratio *= (float)EmulationSettings::GetOverscanDimensions().GetScreenWidth() / EmulationSettings::GetOverscanDimensions().GetScreenHeight() / 256 * 240;
if(EmulationSettings::GetScreenRotation() % 180) {
info.geometry.aspect_ratio = ratio == 0.0f ? 0.0f : 1.0f / ratio;
} else {
info.geometry.aspect_ratio = ratio;
}
info.geometry.base_width = EmulationSettings::GetOverscanDimensions().GetScreenWidth();
info.geometry.base_height = EmulationSettings::GetOverscanDimensions().GetScreenHeight();
info.geometry.max_width = newHeight;
info.geometry.max_height = newWidth;
}
void SetCallbacks(retro_video_refresh_t sendFrame, retro_environment_t retroEnv)
{
_sendFrame = sendFrame;
_retroEnv = retroEnv;
}
void SetSkipMode(bool skip)

41
Libretro/libretro.cpp
View file

@ -147,7 +147,7 @@ extern "C" {
RETRO_API void retro_set_video_refresh(retro_video_refresh_t sendFrame)
{
_renderer->SetSendFrame(sendFrame);
_renderer->SetCallbacks(sendFrame, retroEnv);
}
RETRO_API void retro_set_audio_sample(retro_audio_sample_t sendAudioSample)
@ -178,31 +178,6 @@ extern "C" {
Console::Reset(true);
}
void setup_av_info(struct retro_system_av_info *info)
{
info->timing.fps = Console::GetModel() == NesModel::NTSC ? 60.098811862348404716732985230828 : 50.006977968268290848936010226333;
info->timing.sample_rate = 48000;
float ratio = (float)EmulationSettings::GetAspectRatio();
if(ratio == 0.0f) {
ratio = 1.0f;
}
ratio *= (float)EmulationSettings::GetOverscanDimensions().GetScreenWidth() / EmulationSettings::GetOverscanDimensions().GetScreenHeight() / 256 * 240;
if(EmulationSettings::GetScreenRotation() % 180) {
info->geometry.aspect_ratio = ratio == 0.0f ? 0.0f : 1.0f / ratio;
} else {
info->geometry.aspect_ratio = ratio;
}
info->geometry.base_width = EmulationSettings::GetOverscanDimensions().GetScreenWidth();
info->geometry.base_height = EmulationSettings::GetOverscanDimensions().GetScreenHeight();
//For HD packs:
info->geometry.max_width = 256 * 10;
info->geometry.max_height = 240 * 10;
}
void set_flag(const char* flagName, uint64_t flagValue)
{
struct retro_variable var = {};
@ -464,10 +439,6 @@ extern "C" {
EmulationSettings::SetControllerKeys(1, getKeyBindings(1));
EmulationSettings::SetControllerKeys(2, getKeyBindings(2));
EmulationSettings::SetControllerKeys(3, getKeyBindings(3));
retro_system_av_info avInfo = {};
setup_av_info(&avInfo);
retroEnv(RETRO_ENVIRONMENT_SET_GEOMETRY, &avInfo);
}
RETRO_API void retro_run()
@ -492,12 +463,8 @@ extern "C" {
bool hdPacksEnabled = EmulationSettings::CheckFlag(EmulationFlags::UseHdPacks);
if(hdPacksEnabled != _hdPacksEnabled) {
if(_hdPacksEnabled != hdPacksEnabled) {
//Try to load/unload HD pack when the flag is toggled
if(Console::GetInstance()->UpdateHdPackMode()) {
update_settings();
}
}
//Try to load/unload HD pack when the flag is toggled
Console::GetInstance()->UpdateHdPackMode();
_hdPacksEnabled = hdPacksEnabled;
}
}
@ -685,7 +652,7 @@ extern "C" {
RETRO_API void retro_get_system_av_info(struct retro_system_av_info *info)
{
setup_av_info(info);
_renderer->GetSystemAudioVideoInfo(*info, 256, 240);
}
RETRO_API void *retro_get_memory_data(unsigned id)