From d5f388cf2ffc802915d221d7f10a118adb71ad3a Mon Sep 17 00:00:00 2001
From: olebeck <31539311+olebeck@users.noreply.github.com>
Date: Sun, 22 Jun 2025 03:27:22 +0200
Subject: [PATCH] use custom pvr apphint

---
 CMakeLists.txt   |  5 +++++
 ISLE/isleapp.cpp | 31 +++++++++++++++++++++++++++++++
 2 files changed, 36 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 802e75c5..6f25d942 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -520,6 +520,11 @@ if (ISLE_BUILD_APP)
   if (WIN32)
     target_link_libraries(isle PRIVATE winmm)
   endif()
+
+  if(VITA)
+    target_link_libraries(isle PRIVATE GLESv2)
+  endif()
+
   # Link LEGO1
   target_link_libraries(isle PRIVATE lego1)
   if(ISLE_DEBUG)
diff --git a/ISLE/isleapp.cpp b/ISLE/isleapp.cpp
index 6c4c8e2f..5203dcae 100644
--- a/ISLE/isleapp.cpp
+++ b/ISLE/isleapp.cpp
@@ -50,6 +50,13 @@
 #include "emscripten/messagebox.h"
 #endif
 
+#ifdef __vita__
+extern "C"{
+#include <gpu_es4/psp2_pvr_hint.h>
+}
+#include <psp2/kernel/modulemgr.h>
+#endif
+
 DECOMP_SIZE_ASSERT(IsleApp, 0x8c)
 
 // GLOBAL: ISLE 0x410030
@@ -261,6 +268,29 @@ SDL_AppResult SDL_AppInit(void** appstate, int argc, char** argv)
 	SDL_SetHint(SDL_HINT_MOUSE_TOUCH_EVENTS, "0");
 	SDL_SetHint(SDL_HINT_TOUCH_MOUSE_EVENTS, "0");
 
+#ifdef __vita__
+	SDL_setenv_unsafe("VITA_PVR_SKIP_INIT", "enable", 1);
+	PVRSRV_PSP2_APPHINT hint;
+	
+	sceKernelLoadStartModule("vs0:sys/external/libfios2.suprx", 0, NULL, 0, NULL, NULL);
+	sceKernelLoadStartModule("vs0:sys/external/libc.suprx", 0, NULL, 0, NULL, NULL);
+	sceKernelLoadStartModule("app0:/module/libgpu_es4_ext.suprx", 0, NULL, 0, NULL, NULL);
+	sceKernelLoadStartModule("app0:/module/libIMGEGL.suprx", 0, NULL, 0, NULL, NULL);
+	PVRSRVInitializeAppHint(&hint);
+	
+	#if DO_HARDWARE_TRANSFERS == 0
+	hint.bDisableHWTextureUpload = 1;
+	hint.bDisableHWTQBufferBlit = 1;
+	hint.bDisableHWTQMipGen = 1;
+	hint.bDisableHWTQNormalBlit = 1;
+	hint.bDisableHWTQTextureUpload = 1;
+	#endif
+	
+	#define GPU_MEM_SIZE 16777216
+	hint.ui32DriverMemorySize = GPU_MEM_SIZE;
+	PVRSRVCreateVirtualAppHint(&hint);
+#endif
+
 	if (!SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_JOYSTICK)) {
 		char buffer[256];
 		SDL_snprintf(
@@ -671,6 +701,7 @@ MxResult IsleApp::SetupWindow()
 	SDL_DestroyProperties(props);
 
 	if (!m_windowHandle) {
+		SDL_Log("failed to create window: %s", SDL_GetError());
 		return FAILURE;
 	}