Merge pull request yquake2#1163 from ps5-payload-dev/master

Simplify compiling for targets that lack GL drivers

CMakeLists.txt

@@ -65,6 +65,11 @@ option(CURL_SUPPORT "cURL support" ON)
 option(OPENAL_SUPPORT "OpenAL support" ON)
 option(SYSTEMWIDE_SUPPORT "Enable systemwide installation of game assets" OFF)
 option(SDL3_SUPPORT "Build against SDL 3 instead of SDL2" OFF)
+option(GL1_RENDERER "Build the GL3 renderer" ON)
+option(GL3_RENDERER "Build the GL3 renderer" ON)
+option(GLES1_RENDERER "Build the GLES1 renderer" OFF)
+option(GLES3_RENDERER "Build the GLES3 renderer" ON)
+option(SOFT_RENDERER "Build the software renderer" ON)
 
 set(SYSTEMDIR "" CACHE STRING "Override the system default directory")
 
@@ -189,11 +194,13 @@ else()
 	list(APPEND yquake2SDLLinkerFlags ${SDL2_LIBRARY})
 endif()
 
-# We need an OpenGL implementation.
-set(OpenGL_GL_PREFERENCE GLVND)
-find_package(OpenGL REQUIRED)
-list(APPEND yquake2IncludeDirectories ${OPENGL_INCLUDE_DIR})
-list(APPEND yquake2OpenGLLinkerFlags ${OPENGL_LIBRARIES})
+if(GL1_RENDERER)
+     # We need an OpenGL implementation.
+     set(OpenGL_GL_PREFERENCE GLVND)
+     find_package(OpenGL REQUIRED)
+     list(APPEND yquake2IncludeDirectories ${OPENGL_INCLUDE_DIR})
+     list(APPEND yquake2OpenGLLinkerFlags ${OPENGL_LIBRARIES})
+endif()
 
 # backtrace lookup
 # Some systems like Linux has it within the libc some like the BSD, Haiku ...
@@ -781,6 +788,8 @@ else() # single-config, like normal Makefiles
 endif()
 target_link_libraries(game ${yquake2LinkerFlags})
 
+if(${GL1_RENDERER})
+
 # Build the GL1 dynamic library
 add_library(ref_gl1 MODULE ${GL1-Source} ${GL1-Header} ${REF-Platform-Specific-Source})
 set_target_properties(ref_gl1 PROPERTIES
@@ -795,6 +804,10 @@ if(SDL3_SUPPORT)
 	target_link_libraries(ref_gl1 SDL3::SDL3)
 endif()
 
+endif()
+
+if(${GL3_RENDERER})
+
 # Build the GL3 dynamic library
 add_library(ref_gl3 MODULE ${GL3-Source} ${Glad-GL3-Source} ${GL3-Header} ${Glad-GL3-Header} ${REF-Platform-Specific-Source})
 set_target_properties(ref_gl3 PROPERTIES
@@ -809,6 +822,10 @@ if(SDL3_SUPPORT)
 	target_link_libraries(ref_gl3 SDL3::SDL3)
 endif()
 
+endif()
+
+if(${GLES3_RENDERER})
+
 # Build the GLES3 dynamic library
 add_library(ref_gles3 MODULE ${GL3-Source} ${Glad-GLES3-Source} ${GL3-Header} ${Glad-GLES3-Header} ${REF-Platform-Specific-Source})
 set_target_properties(ref_gles3 PROPERTIES
@@ -825,6 +842,10 @@ if(SDL3_SUPPORT)
 	target_link_libraries(ref_gles3 SDL3::SDL3)
 endif()
 
+endif()
+
+if(${SOFT_RENDERER})
+
 # Build the soft renderer dynamic library
 add_library(ref_soft MODULE ${SOFT-Source} ${SOFT-Header} ${REF-Platform-Specific-Source})
 set_target_properties(ref_soft PROPERTIES
@@ -838,7 +859,9 @@ if(SDL3_SUPPORT)
 	target_link_libraries(ref_soft SDL3::SDL3)
 endif()
 
-if(FALSE)
+endif()
+
+if(${GLES1_RENDERER})
 
 # Build the GLES1 dynamic library
 add_library(ref_gles1 MODULE ${GL1-Source} ${Glad-GLES1-Source} ${GL1-Header} ${Glad-GLES1-Header} ${REF-Platform-Specific-Source})

src/backends/generic/misc.c

@@ -29,7 +29,7 @@
 
 #include "../../common/header/shared.h"
 
-#if defined(__linux) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__sun)
+#if defined(__linux) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__sun) || defined(__APPLE__)
 #include <unistd.h> // readlink(), amongst others
 #endif
 
@@ -39,6 +39,7 @@
 
 #ifdef _WIN32
 #include <windows.h> // GetModuleFileNameA()
+#include <wchar.h> // _wgetcwd()
 #endif
 
 #ifdef __APPLE__
@@ -145,6 +146,31 @@ static void SetExecutablePath(char* exePath)
 #endif
 }
 
+qboolean Sys_GetCwd(char *buf, size_t size)
+{
+#ifdef _WIN32
+	WCHAR wpath[PATH_MAX];
+	DWORD len;
+
+	if (_wgetcwd(wpath, PATH_MAX) == NULL)
+	{
+		return false;
+	}
+	len = WideCharToMultiByte(CP_UTF8, 0, wpath, -1, buf, size, NULL, NULL);
+	if (len <= 0 || len == size)
+	{
+		return false;
+	}
+#else
+	if (getcwd(buf, size) == NULL)
+	{
+		return false;
+	}
+#endif
+	return Q_strlcat(buf, "/", size) == 1;
+}
+
+
 const char *Sys_GetBinaryDir(void)
 {
 	static char exeDir[PATH_MAX] = {0};
@@ -156,8 +182,11 @@ const char *Sys_GetBinaryDir(void)
 	SetExecutablePath(exeDir);
 
 	if (exeDir[0] == '\0') {
-		Com_Printf("Couldn't determine executable path. Using ./ instead.\n");
-		Q_strlcpy(exeDir, "./", sizeof(exeDir));
+		if (Sys_GetCwd(exeDir, sizeof(exeDir)) == false)
+		{
+			Q_strlcpy(exeDir, "./", sizeof(exeDir));
+		}
+		Com_Printf("Couldn't determine executable path. Using %s instead.\n", exeDir);
 	} else {
 		// cut off executable name
 		char *lastSlash = strrchr(exeDir, '/');

src/client/refresh/soft/sw_main.c

@@ -1914,6 +1914,10 @@ RE_InitContext(void *win)
 		SDL_SetRenderVSync(renderer, 1);
 #else
 		renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
+                if(!renderer)
+                {
+                	renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_SOFTWARE | SDL_RENDERER_PRESENTVSYNC);
+                }
 #endif
 	}
 	else
@@ -1922,8 +1926,16 @@ RE_InitContext(void *win)
 		renderer = SDL_CreateRenderer(window, NULL);
 #else
 		renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED);
+                if(!renderer)
+                {
+                	renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_SOFTWARE);
+                }
 #endif
 	}
+	if(!renderer) {
+		Com_Printf("Can't create renderer: %s\n", SDL_GetError());
+		return false;
+	}
 
 	/* Select the color for drawing. It is set to black here. */
 	SDL_SetRenderDrawColor(renderer, 0, 0, 0, 0);
@@ -1966,7 +1978,10 @@ RE_InitContext(void *win)
 #endif
 				    SDL_TEXTUREACCESS_STREAMING,
 				    vid_buffer_width, vid_buffer_height);
-
+	if(!texture) {
+		Com_Printf("Can't create texture: %s\n", SDL_GetError());
+		return false;
+	}
 	R_InitGraphics(vid_buffer_width, vid_buffer_height);
 	SWimp_CreateRender(vid_buffer_width, vid_buffer_height);
 

src/client/vid/glimp_sdl2.c

@@ -720,13 +720,15 @@ GLimp_ShutdownGraphics(void)
 void
 GLimp_GrabInput(qboolean grab)
 {
+	static qboolean seen_error = false;
 	if(window != NULL)
 	{
 		SDL_SetWindowGrab(window, grab ? SDL_TRUE : SDL_FALSE);
 	}
 
-	if(SDL_SetRelativeMouseMode(grab ? SDL_TRUE : SDL_FALSE) < 0)
+	if(SDL_SetRelativeMouseMode(grab ? SDL_TRUE : SDL_FALSE) < 0 && !seen_error)
 	{
+		seen_error = true;
 		Com_Printf("WARNING: Setting Relative Mousemode failed, reason: %s\n", SDL_GetError());
 		Com_Printf("         You should probably update to SDL 2.0.3 or newer!\n");
 	}