games: Fix broken input on Killzone: Mercenary at >59 fps

* Should fix menus on PSTV
* This isn't perfect as we break the TAI hook chain
   on sceCtrlReadBuffer functions, which means that user plugins that
   hook these functions to read input need to be placed before VitaGrafix
   in tai config.txt (or otherwise they won't register any input).

Signed-off-by: Michal Chvila <miso.chvila@gmail.com>

CMakeLists.txt

@@ -30,6 +30,7 @@ target_link_libraries(VitaGrafix
   taihen_stub
   SceAppMgr_stub
   SceDisplay_stub
+  SceCtrl_stub
   kuio_stub
   k
   gcc

README.md

@@ -108,7 +108,7 @@ NOTE: If some options are left out, the plugin will use their default values (fo
 | Hatsune Miku: Project Diva f | PCSB00419 <br/> PCSE00326 <br/> PCSG00074 | Internal res. <br/> FPS cap | 640x352 <br/> 30 | OFF <br/> OFF | At 60 FPS menu is double speed |
 | Hatsune Miku: Project Diva f 2nd | PCSB00554 <br/> PCSE00434 <br/> PCSG00205 <br/> PCSH00088 | Internal res. <br/> FPS cap | 720x408 <br/> 30 | OFF <br/> OFF | At 60 FPS menu is double speed |
 | Jak and Daxter Collection | PCSF00247 <br/> PCSF00248 <br/> PCSF00249 <br/> PCSF00250 <br/> PCSA00080 | Framebuffer | 720x408 | 960x544 | All 3 games |
-| Killzone: Mercenary | PCSF00243 <br/> PCSF00403 <br/> PCSA00107 <br/> PCSC00045 <br/> PCSD00071 | Internal res. <br/> FPS cap | Dynamic <br/> 30 | OFF <br/> OFF | Input doesn't work when framerate is > 59. <br/> Particles are rendered separately. |
+| Killzone: Mercenary | PCSF00243 <br/> PCSF00403 <br/> PCSA00107 <br/> PCSC00045 <br/> PCSD00071 | Internal res. <br/> FPS cap | Dynamic <br/> 30 | OFF <br/> OFF | Particles are rendered separately. |
 | LEGO Star Wars: The Force Awakens | PCSB00877 <br/> PCSE00791 | Internal res. | 640x368 | 720x408 | Game crashes when opening pause menu at high resolutions. |
 | LittleBigPlanet | PCSF00021 <br/> PCSA00017 <br/> PCSC00013 <br/> PCSD00006 | Internal res. | 720x408 | OFF | Particles cause artifacts at native res. |
 | Miracle Girls Festival | PCSG00610 | Internal res. | 720x408 | 960x544 | |

games.c

@@ -9,6 +9,7 @@
 #include "games.h"
 
 int sceDisplayWaitVblankStartMulti(unsigned int vcount);
+int sceCtrlPeekBufferPositive2(int port, SceCtrlData *pad_data, int count);
 
 int sceDisplaySetFrameBuf_withWait(const SceDisplayFrameBuf *pParam, int sync) {
 	int ret = TAI_CONTINUE(int, hooks_ref[0], pParam, sync);
@@ -18,6 +19,13 @@ int sceDisplaySetFrameBuf_withWait(const SceDisplayFrameBuf *pParam, int sync) {
 	return ret;
 }
 
+int sceCtrlReadBufferPositive_peekPatched(int port, SceCtrlData *pad_data, int count) {
+	return sceCtrlPeekBufferPositive(port, pad_data, count);
+}
+int sceCtrlReadBufferPositive2_peekPatched(int port, SceCtrlData *pad_data, int count) {
+	return sceCtrlPeekBufferPositive2(port, pad_data, count);
+}
+
 uint8_t patch_game(const char *titleid, tai_module_info_t *eboot_info, VG_Config *config) {
 	if (!strncmp(titleid, "PCSF00243", 9) || // Killzone Mercenary [EUR] [1.12]
 			!strncmp(titleid, "PCSF00403", 9) || // Killzone Mercenary [EUR] [1.12]
@@ -50,8 +58,13 @@ uint8_t patch_game(const char *titleid, tai_module_info_t *eboot_info, VG_Config
 
 			// dword_819706A4  DCD 2  ; DATA XREF: seg000:8104F722
 			injectData(eboot_info->modid, 0, 0x9706A4, &data32_vblank, sizeof(data32_vblank));
+
+			if (config->fps == FPS_60) {
+				hookFunctionImport(0x67E7AB83, sceCtrlReadBufferPositive_peekPatched);
+				hookFunctionImport(0xC4226A3E, sceCtrlReadBufferPositive2_peekPatched);
+			}
 		}
-		
+
 		return 1;
 	}
 	else if (!strncmp(titleid, "PCSB00245", 9) || // Persona 4 Golden [EUR]