diff --git a/src/gl/system/gl_extlist.txt b/src/gl/system/gl_extlist.txt
index b67d21f10e3..d0999b3e2a9 100644
--- a/src/gl/system/gl_extlist.txt
+++ b/src/gl/system/gl_extlist.txt
@@ -3,7 +3,6 @@
 -- Generation of gl_load.c and gl_load.h files:
 -- > lua LoadGen.lua -style=pointer_c -spec=gl -version=3.3 -profile=compatibility -extfile=gl_extlist.txt load
 
-APPLE_client_storage
 ARB_buffer_storage
 ARB_shader_storage_buffer_object
 ARB_texture_compression
@@ -14,4 +13,3 @@ EXT_texture_filter_anisotropic
 EXT_texture_sRGB
 KHR_debug
 ARB_invalidate_subdata
-EXT_abgr
diff --git a/src/gl/system/gl_load.c b/src/gl/system/gl_load.c
index b0608ecb524..12734d7153c 100644
--- a/src/gl/system/gl_load.c
+++ b/src/gl/system/gl_load.c
@@ -97,7 +97,6 @@ static PROC WinGetProcAddress(const char *name)
 	#endif
 #endif
 
-int ogl_ext_APPLE_client_storage = ogl_LOAD_FAILED;
 int ogl_ext_ARB_buffer_storage = ogl_LOAD_FAILED;
 int ogl_ext_ARB_shader_storage_buffer_object = ogl_LOAD_FAILED;
 int ogl_ext_ARB_texture_compression = ogl_LOAD_FAILED;
@@ -108,7 +107,6 @@ int ogl_ext_EXT_texture_filter_anisotropic = ogl_LOAD_FAILED;
 int ogl_ext_EXT_texture_sRGB = ogl_LOAD_FAILED;
 int ogl_ext_KHR_debug = ogl_LOAD_FAILED;
 int ogl_ext_ARB_invalidate_subdata = ogl_LOAD_FAILED;
-int ogl_ext_EXT_abgr = ogl_LOAD_FAILED;
 
 void (CODEGEN_FUNCPTR *_ptrc_glBufferStorage)(GLenum target, GLsizeiptr size, const void * data, GLbitfield flags) = NULL;
 
@@ -2388,8 +2386,7 @@ typedef struct ogl_StrToExtMap_s
 	PFN_LOADFUNCPOINTERS LoadExtension;
 } ogl_StrToExtMap;
 
-static ogl_StrToExtMap ExtensionMap[12] = {
-	{"GL_APPLE_client_storage", &ogl_ext_APPLE_client_storage, NULL},
+static ogl_StrToExtMap ExtensionMap[10] = {
 	{"GL_ARB_buffer_storage", &ogl_ext_ARB_buffer_storage, Load_ARB_buffer_storage},
 	{"GL_ARB_shader_storage_buffer_object", &ogl_ext_ARB_shader_storage_buffer_object, Load_ARB_shader_storage_buffer_object},
 	{"GL_ARB_texture_compression", &ogl_ext_ARB_texture_compression, Load_ARB_texture_compression},
@@ -2400,10 +2397,9 @@ static ogl_StrToExtMap ExtensionMap[12] = {
 	{"GL_EXT_texture_sRGB", &ogl_ext_EXT_texture_sRGB, NULL},
 	{"GL_KHR_debug", &ogl_ext_KHR_debug, Load_KHR_debug},
 	{"GL_ARB_invalidate_subdata", &ogl_ext_ARB_invalidate_subdata, Load_ARB_invalidate_subdata},
-	{"GL_EXT_abgr", &ogl_ext_EXT_abgr, NULL},
 };
 
-static int g_extensionMapSize = 12;
+static int g_extensionMapSize = 10;
 
 static ogl_StrToExtMap *FindExtEntry(const char *extensionName)
 {
@@ -2420,7 +2416,6 @@ static ogl_StrToExtMap *FindExtEntry(const char *extensionName)
 
 static void ClearExtensionVars(void)
 {
-	ogl_ext_APPLE_client_storage = ogl_LOAD_FAILED;
 	ogl_ext_ARB_buffer_storage = ogl_LOAD_FAILED;
 	ogl_ext_ARB_shader_storage_buffer_object = ogl_LOAD_FAILED;
 	ogl_ext_ARB_texture_compression = ogl_LOAD_FAILED;
@@ -2431,7 +2426,6 @@ static void ClearExtensionVars(void)
 	ogl_ext_EXT_texture_sRGB = ogl_LOAD_FAILED;
 	ogl_ext_KHR_debug = ogl_LOAD_FAILED;
 	ogl_ext_ARB_invalidate_subdata = ogl_LOAD_FAILED;
-	ogl_ext_EXT_abgr = ogl_LOAD_FAILED;
 }
 
 
diff --git a/src/gl/system/gl_load.h b/src/gl/system/gl_load.h
index eb9b0e321c4..ee849aaf965 100644
--- a/src/gl/system/gl_load.h
+++ b/src/gl/system/gl_load.h
@@ -107,7 +107,6 @@ typedef unsigned int GLhandleARB;
 extern "C" {
 #endif /*__cplusplus*/
 
-extern int ogl_ext_APPLE_client_storage;
 extern int ogl_ext_ARB_buffer_storage;
 extern int ogl_ext_ARB_shader_storage_buffer_object;
 extern int ogl_ext_ARB_texture_compression;
@@ -118,9 +117,6 @@ extern int ogl_ext_EXT_texture_filter_anisotropic;
 extern int ogl_ext_EXT_texture_sRGB;
 extern int ogl_ext_KHR_debug;
 extern int ogl_ext_ARB_invalidate_subdata;
-extern int ogl_ext_EXT_abgr;
-
-#define GL_UNPACK_CLIENT_STORAGE_APPLE 0x85B2
 
 #define GL_BUFFER_IMMUTABLE_STORAGE 0x821F
 #define GL_BUFFER_STORAGE_FLAGS 0x8220
@@ -286,8 +282,6 @@ extern int ogl_ext_EXT_abgr;
 #define GL_STACK_UNDERFLOW 0x0504
 #define GL_VERTEX_ARRAY 0x8074
 
-#define GL_ABGR_EXT 0x8000
-
 #define GL_2D 0x0600
 #define GL_2_BYTES 0x1407
 #define GL_3D 0x0601
diff --git a/src/posix/cocoa/i_main.mm b/src/posix/cocoa/i_main.mm
index f5c49eaafbb..d528a0f72cf 100644
--- a/src/posix/cocoa/i_main.mm
+++ b/src/posix/cocoa/i_main.mm
@@ -169,10 +169,6 @@ static void I_DetectOS()
 		"32-bit Intel";
 #elif defined __x86_64__
 		"64-bit Intel";
-#elif defined __ppc__
-		"32-bit PowerPC";
-#elif defined __ppc64__
-		"64-bit PowerPC";
 #else
 		"Unknown";
 #endif
diff --git a/src/posix/cocoa/i_video.mm b/src/posix/cocoa/i_video.mm
index a1bc96403c9..fdc3522d3bf 100644
--- a/src/posix/cocoa/i_video.mm
+++ b/src/posix/cocoa/i_video.mm
@@ -112,13 +112,7 @@ - (void)enterFullscreenOnZoom
 EXTERN_CVAR(Bool, vid_vsync)
 EXTERN_CVAR(Bool, vid_hidpi)
 
-#if defined __ppc__ || defined __ppc64__
-static const bool TRUECOLOR_DEFAULT = false;
-#else // other than PowerPC
-static const bool TRUECOLOR_DEFAULT = true;
-#endif // PowerPC
-
-CUSTOM_CVAR(Bool, swtruecolor, TRUECOLOR_DEFAULT, CVAR_ARCHIVE | CVAR_GLOBALCONFIG | CVAR_NOINITCALL)
+CUSTOM_CVAR(Bool, swtruecolor, true, CVAR_ARCHIVE | CVAR_GLOBALCONFIG | CVAR_NOINITCALL)
 {
 	// Strictly speaking this doesn't require a mode switch, but it is the easiest
 	// way to force a CreateFramebuffer call without a lot of refactoring.
@@ -892,7 +886,6 @@ - (void)setCursor:(NSCursor*)cursor
 
 	glGenTextures(1, &m_texture);
 	glBindTexture(GL_TEXTURE_RECTANGLE_ARB, m_texture);
-	glPixelStorei(GL_UNPACK_CLIENT_STORAGE_APPLE, GL_TRUE);
 
 	glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
 	glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
@@ -1103,16 +1096,8 @@ - (void)setCursor:(NSCursor*)cursor
 		rbOpts.dirty = false;
 	}
 
-#ifdef __LITTLE_ENDIAN__
-	static const GLenum format = GL_RGBA;
-#else // __BIG_ENDIAN__
-	static const GLenum format = GL_ABGR_EXT;
-#endif // __LITTLE_ENDIAN__
-
-	if (IsBgra())
-		glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA8, Width, Height, 0, GL_BGRA, GL_UNSIGNED_BYTE, m_pixelBuffer);
-	else
-		glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA8, Width, Height, 0, format, GL_UNSIGNED_BYTE, m_pixelBuffer);
+	const GLenum format = IsBgra() ? GL_BGRA : GL_RGBA;
+	glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA8, Width, Height, 0, format, GL_UNSIGNED_BYTE, m_pixelBuffer);
 
 	glBegin(GL_QUADS);
 	glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
diff --git a/src/posix/osx/iwadpicker_cocoa.mm b/src/posix/osx/iwadpicker_cocoa.mm
index 2d8b2057c41..2792e86302f 100644
--- a/src/posix/osx/iwadpicker_cocoa.mm
+++ b/src/posix/osx/iwadpicker_cocoa.mm
@@ -381,10 +381,6 @@ - (void)menuActionSent:(NSNotification*)notification
 	return @"i386";
 #elif defined __x86_64__
 	return @"x86_64";
-#elif defined __ppc__
-	return @"ppc";
-#elif defined __ppc64__
-	return @"ppc64";
 #endif
 }