libretro/ppsspp
1
0
Fork 0
mirror of https://github.com/libretro/ppsspp.git synced 2025-02-16 15:08:34 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Apply a very specific hack for Danganronpa.

Browse Source 
This should allow playing at non-1x resolutions, and without slowing down
the entire game just for one small framebuffer.

Generally, hacks are a bad thing.  But even with memcpy and block transfer
stuff, we'll never be able to solve this game without some sort of hack.
Detecting memory reads will complicate cross-platform compat or slow
things down.
This commit is contained in:
Unknown W. Brackets 2014-05-26 11:40:46 -07:00
parent 8afd1f028c
commit 1a8369e51c
2 changed files with 22 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
GPU/GLES/Framebuffer.cpp
View File

@ -30,6 +30,7 @@
#include "Core/Config.h"
#include "Core/System.h"
#include "Core/Reporting.h"
#include "Core/ELF/ParamSFO.h"
#include "Core/HLE/sceDisplay.h"
#include "GPU/ge_constants.h"
#include "GPU/GPUState.h"
@ -344,7 +345,13 @@ FramebufferManager::FramebufferManager() :
useBufferedRendering_ = g_Config.iRenderingMode != FB_NON_BUFFERED_MODE;
updateVRAM_ = !(g_Config.iRenderingMode == FB_NON_BUFFERED_MODE || g_Config.iRenderingMode == FB_BUFFERED_MODE);
const std::string gameId = g_paramSFO.GetValueString("DISC_ID");
// This applies a hack to Dangan Ronpa, its demo, and its sequel.
// The game draws solid colors to a small framebuffer, and then reads this directly in VRAM.
// We force this framebuffer to 1x and force download it automatically.
hackForce04154000Download_ = gameId == "NPJH50631" || gameId == "NPJH50372" || gameId == "NPJH90164";
SetLineWidth();
}
@ -770,6 +777,11 @@ void FramebufferManager::DoSetRenderFrameBuffer() {
float renderWidthFactor = (float)PSP_CoreParameter().renderWidth / 480.0f;
float renderHeightFactor = (float)PSP_CoreParameter().renderHeight / 272.0f;
if (hackForce04154000Download_ && MaskedEqual(fb_address, 0x04154000)) {
renderWidthFactor = 1.0;
renderHeightFactor = 1.0;
}
// None found? Create one.
if (!vfb) {
gstate_c.textureChanged |= TEXCHANGE_PARAMSONLY;
@ -873,7 +885,7 @@ void FramebufferManager::DoSetRenderFrameBuffer() {
// We already have it!
} else if (vfb != currentRenderVfb_) {
if (updateVRAM_ && !vfb->memoryUpdated) {
if (ShouldDownloadFramebuffer(vfb) && !vfb->memoryUpdated) {
ReadFramebufferToMemory(vfb, true, 0, 0, vfb->width, vfb->height);
}
// Use it as a render target.
@ -1145,6 +1157,10 @@ void FramebufferManager::CopyDisplayToOutput() {
}
}
inline bool FramebufferManager::ShouldDownloadFramebuffer(const VirtualFramebuffer *vfb) const {
return updateVRAM_ || (hackForce04154000Download_ && MaskedEqual(vfb->fb_address, 0x04154000));
}
void FramebufferManager::ReadFramebufferToMemory(VirtualFramebuffer *vfb, bool sync, int x, int y, int w, int h) {
#ifndef USING_GLES2
@ -1736,7 +1752,7 @@ void FramebufferManager::DecimateFBOs() {
VirtualFramebuffer *vfb = vfbs_[i];
int age = frameLastFramebufUsed - std::max(vfb->last_frame_render, vfb->last_frame_used);
if (updateVRAM_ && age == 0 && !vfb->memoryUpdated) {
if (ShouldDownloadFramebuffer(vfb) && age == 0 && !vfb->memoryUpdated) {
#ifdef USING_GLES2
bool sync = true;
#else

3
GPU/GLES/Framebuffer.h
View File

@ -209,6 +209,7 @@ public:
}
return true;
}
inline bool ShouldDownloadFramebuffer(const VirtualFramebuffer *vfb) const;
bool NotifyFramebufferCopy(u32 src, u32 dest, int size);
@ -274,6 +275,8 @@ private:
bool updateVRAM_;
bool gameUsesSequentialCopies_;
bool hackForce04154000Download_;
// The range of PSP memory that may contain FBOs. So we can skip iterating.
u32 framebufRangeEnd_;