DS: Try to avoid loading unnecessary textures into VRAM, slightly optimise matrix loading

src/Animations.c

@@ -12,7 +12,7 @@
 #include "Options.h"
 #include "Logger.h"
 
-#ifdef CC_BUILD_ANIMATIONS
+#ifndef CC_DISABLE_ANIMATIONS
 static void Animations_Update(int loc, struct Bitmap* bmp, int stride);
 
 #ifdef CC_BUILD_LOWMEM

src/Core.h

@@ -158,8 +158,6 @@ typedef cc_uint8  cc_bool;
 #define CC_BUILD_FREETYPE
 #define CC_BUILD_RESOURCES
 #define CC_BUILD_PLUGINS
-#define CC_BUILD_ANIMATIONS
-#define CC_BUILD_HELDBLOCK
 #define CC_BUILD_FILESYSTEM
 #define CC_BUILD_ADVLIGHTING
 /*#define CC_BUILD_GL11*/
@@ -402,7 +400,8 @@ typedef cc_uint8  cc_bool;
 	#define CC_BUILD_TOUCH
 	#define CC_BUILD_SMALLSTACK
 	#define DEFAULT_NET_BACKEND CC_NET_BACKEND_BUILTIN
-	#undef  CC_BUILD_ANIMATIONS /* Very costly in FPU less system */
+	#define CC_DISABLE_ANIMATIONS /* Very costly in FPU less system */
+	#define CC_BUILD_LOW_VRAM     /* Only ~640 kb of VRAM */
 	#undef  CC_BUILD_ADVLIGHTING
 #elif defined __WIIU__
 	#define CC_BUILD_WIIU
@@ -432,8 +431,8 @@ typedef cc_uint8  cc_bool;
 	#define CC_BUILD_NOSOUNDS
 	#undef  CC_BUILD_RESOURCES
 	#undef  CC_BUILD_NETWORKING
-	#undef  CC_BUILD_ANIMATIONS /* Very costly in FPU less system */
-	#undef  CC_BUILD_HELDBLOCK  /* Very costly in FPU less system */
+	#define CC_DISABLE_ANIMATIONS /* Very costly in FPU less system */
+	#define CC_DISABLE_HELDBLOCK  /* Very costly in FPU less system */
 	#undef  CC_BUILD_ADVLIGHTING
 	#undef  CC_BUILD_FILESYSTEM
 #elif defined OS2
@@ -455,8 +454,8 @@ typedef cc_uint8  cc_bool;
 	#define CC_BUILD_TINYSTACK
 	#undef  CC_BUILD_RESOURCES
 	#undef  CC_BUILD_NETWORKING
-	#undef  CC_BUILD_ANIMATIONS /* Very costly in FPU less system */
-	#undef  CC_BUILD_HELDBLOCK  /* Very costly in FPU less system */
+	#define CC_DISABLE_ANIMATIONS /* Very costly in FPU less system */
+	#define CC_DISABLE_HELDBLOCK  /* Very costly in FPU less system */
 	#undef  CC_BUILD_ADVLIGHTING
 	#undef  CC_BUILD_FILESYSTEM
 #endif

src/EnvRenderer.c

@@ -916,10 +916,12 @@ static void OnInit(void) {
 	EnvRenderer_Legacy  = flags & ENV_LEGACY;
 	EnvRenderer_Minimal = flags & ENV_MINIMAL;
 
+#ifndef CC_BUILD_LOW_VRAM
 	TextureEntry_Register(&clouds_entry);
 	TextureEntry_Register(&skybox_entry);
 	TextureEntry_Register(&snow_entry);
 	TextureEntry_Register(&rain_entry);
+#endif
 
 	Event_Register_(&TextureEvents.PackChanged,  NULL, OnTexturePackChanged);
 	Event_Register_(&TextureEvents.AtlasChanged, NULL, OnTerrainAtlasChanged);

src/Graphics_NDS.c

@@ -401,22 +401,24 @@ static int matrix_modes[] = { GL_PROJECTION, GL_MODELVIEW, GL_TEXTURE };
 static int lastMatrix;
 
 void Gfx_LoadMatrix(MatrixType type, const struct Matrix* matrix) {
-	if (type != lastMatrix) { lastMatrix = type; glMatrixMode(matrix_modes[type]); }
+	if (type != lastMatrix) { 
+		lastMatrix     = type; 
+		MATRIX_CONTROL = matrix_modes[type]; 
+	}
 	
+	// loads 4x4 identity matrix
 	if (matrix == &Matrix_Identity) {
-		glLoadIdentity();
+		MATRIX_IDENTITY = 0;
 		return;
 		// TODO still scale?
 	}
 
-	m4x4 m;
+	// loads 4x4 matrix from memory
 	const float* src = (const float*)matrix;
-	
 	for (int i = 0; i < 4 * 4; i++)
 	{
-		m.m[i] = floattof32(src[i]);
+		MATRIX_LOAD4x4 = floattof32(src[i]);
 	}
-	glLoadMatrix4x4(&m);
 
     // Vertex commands are signed 16 bit values, with 12 bits fractional
     //  aka only from -8.0 to 8.0

src/HeldBlockRenderer.c

@@ -11,7 +11,7 @@
 #include "Options.h"
 
 cc_bool HeldBlockRenderer_Show;
-#ifdef CC_BUILD_HELDBLOCK
+#ifndef CC_DISABLE_HELDBLOCK
 static BlockID held_block;
 static struct Entity held_entity;
 static struct Matrix held_blockProj;

src/Platform_NDS.c

@@ -122,8 +122,9 @@ void Platform_EncodePath(cc_filepath* dst, const cc_string* path) {
 cc_result Directory_Create(const cc_filepath* path) {
 	if (!fat_available) return 0;
 
-	Platform_Log1("mkdir %c", path->buffer);
-	return mkdir(path->buffer, 0) == -1 ? errno : 0;
+	int ret = mkdir(path->buffer, 0) == -1 ? errno : 0;
+	Platform_Log2("mkdir %c = %i", path->buffer, &ret);
+	return ret;
 }
 
 int File_Exists(const cc_filepath* path) {