Add IPU check, use software scaling if not present

CMakeLists.txt

@@ -219,6 +219,7 @@ add_library(devilution STATIC
   Source/wave.cpp)
 
 set(devilutionx_SRCS
+  SourceX/utils.cpp
   SourceX/dx.cpp
   SourceX/miniwin/ddraw.cpp
   SourceX/miniwin/misc.cpp

SourceX/dx.cpp

@@ -4,6 +4,8 @@
 #include "miniwin/com_macro.h"
 #include <SDL.h>
 
+#include "utils.h"
+
 namespace dvl {
 
 int sgdwLockCount;
@@ -182,17 +184,33 @@ void BltFast(DWORD dwX, DWORD dwY, LPRECT lpSrcRect)
 		static_cast<decltype(SDL_Rect().y)>(lpSrcRect->top),
 		w, h
 	};
-	SDL_Rect dst_rect = {
-		static_cast<decltype(SDL_Rect().x)>(dwX),
-		static_cast<decltype(SDL_Rect().y)>(dwY),
-		w, h
-	};
-
-	// Convert from 8-bit to 32-bit
-	if (SDL_BlitSurface(pal_surface, &src_rect, GetOutputSurface(), &dst_rect) <= -1) {
-		ErrSdl();
+
+	if (GFX_IsRetroFW20()) {
+		SDL_Rect dst_rect = {
+			static_cast<decltype(SDL_Rect().x)>(dwX),
+			static_cast<decltype(SDL_Rect().y)>(dwY),
+			w, h
+		};
+
+		// Convert from 8-bit to 32-bit
+		if (SDL_BlitSurface(pal_surface, &src_rect, GetOutputSurface(), &dst_rect) <= -1) {
+			ErrSdl();
+		}
+
+	} else {
+		SDL_Rect dst_rect = {
+			static_cast<decltype(SDL_Rect().x)>(dwX) / 2,
+			static_cast<decltype(SDL_Rect().y)>(dwY),
+			w / 2, h
+		};		
+		// Convert from 8-bit to 32-bit
+		SDL_Surface *tmp = SDL_ConvertSurface(pal_surface, GetOutputSurface()->format, 0);
+		if (SDL_BlitScaled(tmp, &src_rect, GetOutputSurface(), &dst_rect) <= -1) {
+			SDL_FreeSurface(tmp);
+			ErrSdl();
+		}
+		SDL_FreeSurface(tmp);		
 	}
-
 	bufferUpdated = true;
 }
 

SourceX/miniwin/misc.cpp

@@ -12,6 +12,8 @@
 #define strncasecmp _strnicmp
 #endif
 
+#include "utils.h"
+
 namespace dvl {
 
 DWORD last_error;
@@ -149,7 +151,11 @@ bool SpawnWindow(LPCSTR lpWindowName, int nWidth, int nHeight)
 	if (fullscreen)
 		flags |= SDL_FULLSCREEN;
 	SDL_WM_SetCaption(lpWindowName, WINDOW_ICON_NAME);
-	SDL_SetVideoMode(nWidth, nHeight, /*bpp=*/0, flags);
+	if (GFX_IsRetroFW20()) {
+		SDL_SetVideoMode(nWidth, nHeight, /*bpp=*/0, flags);
+	} else {
+		SDL_SetVideoMode(320, 480, /*bpp=*/0, flags); // LDK Hack
+	}		
 	window = SDL_GetVideoSurface();
 	if (grabInput)
 		SDL_WM_GrabInput(SDL_GRAB_ON);

SourceX/storm/storm.cpp

@@ -14,6 +14,8 @@
 
 #include "DiabloUI/diabloui.h"
 
+#include "utils.h"
+
 namespace dvl {
 
 DWORD nLastError = 0;
@@ -706,13 +708,25 @@ BOOL SVidPlayContinue(void)
 		}
 		const int scaledW = SVidWidth * factor;
 		const int scaledH = SVidHeight * factor;
+
+		int newX;
+		int newW;
+
+		if (GFX_IsRetroFW20()) {
+			newX = (SCREEN_WIDTH - scaledW) / 2;
+			newW = scaledW;
+		} else {
+			newX = (SCREEN_WIDTH - scaledW) / 2 / 2;
+			newW = scaledW / 2;			
+		}
 
 		SDL_Rect pal_surface_offset = {
-			static_cast<decltype(SDL_Rect().x)>((SCREEN_WIDTH - scaledW) / 2),
+			static_cast<decltype(SDL_Rect().x)>(newX),
 			static_cast<decltype(SDL_Rect().y)>((SCREEN_HEIGHT - scaledH) / 2),
-			static_cast<decltype(SDL_Rect().w)>(scaledW),
+			static_cast<decltype(SDL_Rect().w)>(newW),
 			static_cast<decltype(SDL_Rect().h)>(scaledH)
 		};
+
 #ifdef USE_SDL1
 		SDL_Surface *tmp = SDL_ConvertSurface(SVidSurface, window->format, 0);
 		// NOTE: Consider resolution switching instead if video doesn't play

SourceX/utils.cpp

@@ -0,0 +1,10 @@
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+bool GFX_IsRetroFW20(void)
+{
+    struct stat buffer;
+
+    return (stat("/proc/jz/ipu_ratio", &buffer) == 0); 
+}

SourceX/utils.h

@@ -0,0 +1 @@
+bool GFX_IsRetroFW20(void);