Moved to raylib 4.2.0. Renamed some directory functions to raylib 4.2.0 conventions. Removed GenMeshBinormals and GetRayCollisionModel. Sound and music pan.

CMakeLists.txt

@@ -6,16 +6,17 @@ project( ReiLua )
 
 set( CMAKE_C_STANDARD 99 ) # Requires C99 standard
 
-if( DEBUG )
+option( SHARED "Build using dynamic libraries." off )
-	message( Debug )
+
-	set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -O0 -ggdb -std=c99 -Wall -pedantic -fno-common" )
+if( NOT CMAKE_BUILD_TYPE )
-else()
+  	SET( CMAKE_BUILD_TYPE Release CACHE STRING
-	message( Release )
+      	"Choose the type of build, options are: None Debug Release RelWithDebInfo MinSizeRel."
-	set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -O3 -std=c99 -Wall -pedantic -fno-common" )
+      	FORCE )
 endif()
 
+file( GLOB SOURCES src/*.c )
+
 include_directories( include )
-file( GLOB SOURCES "src/*.c" )
 add_executable( ${PROJECT_NAME} ${SOURCES} )
 
 if( EMSCRIPTEN ) # Web

devnotes

@@ -2,8 +2,10 @@ Current {
 }
 
 Backlog {
+	* Core
+		* LoadDirectoryFilesEx
 	* Audio
-		* Pan (From newer RayLib).
+		* AudioStream
 	* Text
 		* Codepoints
 		* String management. At least TextSplit.

include/audio.h

@@ -21,6 +21,7 @@ int laudioGetSoundsPlaying( lua_State *L );
 int laudioIsSoundPlaying( lua_State *L );
 int laudioSetSoundVolume( lua_State *L );
 int laudioSetSoundPitch( lua_State *L );
+int laudioSetSoundPan( lua_State *L );
 int laudioWaveFormat( lua_State *L );
 int laudioWaveCopy( lua_State *L );
 int laudioWaveCrop( lua_State *L );
@@ -34,5 +35,6 @@ int laudioResumeMusicStream( lua_State *L );
 int laudioSeekMusicStream( lua_State *L );
 int laudioSetMusicVolume( lua_State *L );
 int laudioSetMusicPitch( lua_State *L );
+int laudioSetMusicPan( lua_State *L );
 int laudioGetMusicTimeLength( lua_State *L );
 int laudioGetMusicTimePlayed( lua_State *L );

include/core.h

@@ -84,10 +84,10 @@ int lcoreGetFileNameWithoutExt( lua_State *L );
 int lcoreGetDirectoryPath( lua_State *L );
 int lcoreGetPrevDirectoryPath( lua_State *L );
 int lcoreGetWorkingDirectory( lua_State *L );
-int lcoreGetDirectoryFiles( lua_State *L );
+int lcoreLoadDirectoryFiles( lua_State *L );
 int lcoreChangeDirectory( lua_State *L );
 int lcoreIsFileDropped( lua_State *L );
-int lcoreGetDroppedFiles( lua_State *L );
+int lcoreLoadDroppedFiles( lua_State *L );
 int lcoreGetFileModTime( lua_State *L );
 /* Camera2D. */
 int lcoreCreateCamera2D( lua_State *L );

include/models.h

@@ -38,7 +38,6 @@ int lmodelsSetMeshColor( lua_State *L );
 int lmodelsExportMesh( lua_State *L );
 int lmodelsGetMeshBoundingBox( lua_State *L );
 int lmodelsGenMeshTangents( lua_State *L );
-int lmodelsGenMeshBinormals( lua_State *L );
 /* Material. */
 int lmodelsLoadMaterialDefault( lua_State *L );
 int lmodelsCreateMaterial( lua_State *L );
@@ -71,7 +70,6 @@ int lmodelsCheckCollisionBoxes( lua_State *L );
 int lmodelsCheckCollisionBoxSphere( lua_State *L );
 int lmodelsGetRayCollisionSphere( lua_State *L );
 int lmodelsGetRayCollisionBox( lua_State *L );
-int lmodelsGetRayCollisionModel( lua_State *L );
 int lmodelsGetRayCollisionMesh( lua_State *L );
 int lmodelsGetRayCollisionTriangle( lua_State *L );
 int lmodelsGetRayCollisionQuad( lua_State *L );

include/raylib.h

@@ -1,6 +1,6 @@
 /**********************************************************************************************
 *
-*   raylib v4.0 - A simple and easy-to-use library to enjoy videogames programming (www.raylib.com)
+*   raylib v4.2 - A simple and easy-to-use library to enjoy videogames programming (www.raylib.com)
 *
 *   FEATURES:
 *       - NO external dependencies, all required libraries included with raylib
@@ -33,8 +33,8 @@
 *
 *   OPTIONAL DEPENDENCIES (included):
 *       [rcore] msf_gif (Miles Fogle) for GIF recording
-*       [rcore] sinfl (Micha Mettke) for DEFLATE decompression algorythm
+*       [rcore] sinfl (Micha Mettke) for DEFLATE decompression algorithm
-*       [rcore] sdefl (Micha Mettke) for DEFLATE compression algorythm
+*       [rcore] sdefl (Micha Mettke) for DEFLATE compression algorithm
 *       [rtextures] stb_image (Sean Barret) for images loading (BMP, TGA, PNG, JPEG, HDR...)
 *       [rtextures] stb_image_write (Sean Barret) for image writing (BMP, TGA, PNG, JPG)
 *       [rtextures] stb_image_resize (Sean Barret) for image resizing algorithms
@@ -56,7 +56,7 @@
 *   raylib is licensed under an unmodified zlib/libpng license, which is an OSI-certified,
 *   BSD-like license that allows static linking with closed source software:
 *
-*   Copyright (c) 2013-2021 Ramon Santamaria (@raysan5)
+*   Copyright (c) 2013-2022 Ramon Santamaria (@raysan5)
 *
 *   This software is provided "as-is", without any express or implied warranty. In no event
 *   will the authors be held liable for any damages arising from the use of this software.
@@ -80,12 +80,15 @@
 
 #include <stdarg.h>     // Required for: va_list - Only used by TraceLogCallback
 
-#define RAYLIB_VERSION  "4.0"
+#define RAYLIB_VERSION  "4.2"
 
 // Function specifiers in case library is build/used as a shared library (Windows)
 // NOTE: Microsoft specifiers to tell compiler that symbols are imported/exported from a .dll
 #if defined(_WIN32)
     #if defined(BUILD_LIBTYPE_SHARED)
+        #if defined(__TINYC__)
+            #define __declspec(x) __attribute__((x))
+        #endif
         #define RLAPI __declspec(dllexport)     // We are building the library as a Win32 shared library (.dll)
     #elif defined(USE_LIBTYPE_SHARED)
         #define RLAPI __declspec(dllimport)     // We are using the library as a Win32 shared library (.dll)
@@ -110,6 +113,7 @@
 #endif
 
 // Allow custom memory allocators
+// NOTE: Require recompiling raylib sources
 #ifndef RL_MALLOC
     #define RL_MALLOC(sz)       malloc(sz)
 #endif
@@ -177,10 +181,10 @@
 // Structures Definition
 //----------------------------------------------------------------------------------
 // Boolean type
-#if defined(__STDC__) && __STDC_VERSION__ >= 199901L
+#if (defined(__STDC__) && __STDC_VERSION__ >= 199901L) || (defined(_MSC_VER) && _MSC_VER >= 1800)
     #include <stdbool.h>
 #elif !defined(__cplusplus) && !defined(bool)
-    typedef enum bool { false, true } bool;
+    typedef enum bool { false = 0, true = !false } bool;
     #define RL_BOOL_TYPE
 #endif
 
@@ -322,7 +326,7 @@ typedef struct Mesh {
     // Vertex attributes data
     float *vertices;        // Vertex position (XYZ - 3 components per vertex) (shader-location = 0)
     float *texcoords;       // Vertex texture coordinates (UV - 2 components per vertex) (shader-location = 1)
-    float *texcoords2;      // Vertex second texture coordinates (useful for lightmaps) (shader-location = 5)
+    float *texcoords2;      // Vertex texture second coordinates (UV - 2 components per vertex) (shader-location = 5)
     float *normals;         // Vertex normals (XYZ - 3 components per vertex) (shader-location = 2)
     float *tangents;        // Vertex tangents (XYZW - 4 components per vertex) (shader-location = 4)
     unsigned char *colors;      // Vertex colors (RGBA - 4 components per vertex) (shader-location = 3)
@@ -425,11 +429,15 @@ typedef struct Wave {
     void *data;                 // Buffer data pointer
 } Wave;
 
+// Opaque structs declaration
+// NOTE: Actual structs are defined internally in raudio module
 typedef struct rAudioBuffer rAudioBuffer;
+typedef struct rAudioProcessor rAudioProcessor;
 
 // AudioStream, custom audio stream
 typedef struct AudioStream {
     rAudioBuffer *buffer;       // Pointer to internal data used by the audio system
+    rAudioProcessor *processor; // Pointer to internal data processor, useful for audio effects
 
     unsigned int sampleRate;    // Frequency (samples per second)
     unsigned int sampleSize;    // Bit depth (bits per sample): 8, 16, 32 (24 not supported)
@@ -478,6 +486,13 @@ typedef struct VrStereoConfig {
     float scaleIn[2];               // VR distortion scale in
 } VrStereoConfig;
 
+// File path list
+typedef struct FilePathList {
+    unsigned int capacity;          // Filepaths max entries
+    unsigned int count;             // Filepaths entries count
+    char **paths;                   // Filepaths entries
+} FilePathList;
+
 //----------------------------------------------------------------------------------
 // Enumerators Definition
 //----------------------------------------------------------------------------------
@@ -497,6 +512,7 @@ typedef enum {
     FLAG_WINDOW_ALWAYS_RUN  = 0x00000100,   // Set to allow windows running while minimized
     FLAG_WINDOW_TRANSPARENT = 0x00000010,   // Set to allow transparent framebuffer
     FLAG_WINDOW_HIGHDPI     = 0x00002000,   // Set to support HighDPI
+    FLAG_WINDOW_MOUSE_PASSTHROUGH = 0x00004000, // Set to support mouse passthrough, only supported when FLAG_WINDOW_UNDECORATED
     FLAG_MSAA_4X_HINT       = 0x00000020,   // Set to try enabling MSAA 4X
     FLAG_INTERLACED_HINT    = 0x00010000    // Set to try enabling interlaced video format (for V3D)
 } ConfigFlags;
@@ -839,7 +855,8 @@ typedef enum {
     BLEND_MULTIPLIED,               // Blend textures multiplying colors
     BLEND_ADD_COLORS,               // Blend textures adding colors (alternative)
     BLEND_SUBTRACT_COLORS,          // Blend textures subtracting colors (alternative)
-    BLEND_CUSTOM                    // Belnd textures using custom src/dst factors (use rlSetBlendMode())
+    BLEND_ALPHA_PREMULTIPLY,        // Blend premultiplied textures considering alpha
+    BLEND_CUSTOM                    // Blend textures using custom src/dst factors (use rlSetBlendMode())
 } BlendMode;
 
 // Gesture
@@ -885,8 +902,8 @@ typedef enum {
 typedef void (*TraceLogCallback)(int logLevel, const char *text, va_list args);  // Logging: Redirect trace log messages
 typedef unsigned char *(*LoadFileDataCallback)(const char *fileName, unsigned int *bytesRead);      // FileIO: Load binary data
 typedef bool (*SaveFileDataCallback)(const char *fileName, void *data, unsigned int bytesToWrite);  // FileIO: Save binary data
-typedef char *(*LoadFileTextCallback)(const char *fileName);       // FileIO: Load text data
+typedef char *(*LoadFileTextCallback)(const char *fileName);            // FileIO: Load text data
-typedef bool (*SaveFileTextCallback)(const char *fileName, char *text);     // FileIO: Save text data
+typedef bool (*SaveFileTextCallback)(const char *fileName, char *text); // FileIO: Save text data
 
 //------------------------------------------------------------------------------------
 // Global Variables Definition
@@ -913,7 +930,7 @@ RLAPI bool IsWindowMaximized(void);                               // Check if wi
 RLAPI bool IsWindowFocused(void);                                 // Check if window is currently focused (only PLATFORM_DESKTOP)
 RLAPI bool IsWindowResized(void);                                 // Check if window has been resized last frame
 RLAPI bool IsWindowState(unsigned int flag);                      // Check if one specific window flag is enabled
-RLAPI void SetWindowState(unsigned int flags);                    // Set window configuration state using flags
+RLAPI void SetWindowState(unsigned int flags);                    // Set window configuration state using flags (only PLATFORM_DESKTOP)
 RLAPI void ClearWindowState(unsigned int flags);                  // Clear window configuration state flags
 RLAPI void ToggleFullscreen(void);                                // Toggle window state: fullscreen/windowed (only PLATFORM_DESKTOP)
 RLAPI void MaximizeWindow(void);                                  // Set window state: maximized, if resizable (only PLATFORM_DESKTOP)
@@ -925,6 +942,7 @@ RLAPI void SetWindowPosition(int x, int y);                       // Set window
 RLAPI void SetWindowMonitor(int monitor);                         // Set monitor for the current window (fullscreen mode)
 RLAPI void SetWindowMinSize(int width, int height);               // Set window minimum dimensions (for FLAG_WINDOW_RESIZABLE)
 RLAPI void SetWindowSize(int width, int height);                  // Set window dimensions
+RLAPI void SetWindowOpacity(float opacity);                       // Set window opacity [0.0f..1.0f] (only PLATFORM_DESKTOP)
 RLAPI void *GetWindowHandle(void);                                // Get native window handle
 RLAPI int GetScreenWidth(void);                                   // Get current screen width
 RLAPI int GetScreenHeight(void);                                  // Get current screen height
@@ -933,8 +951,8 @@ RLAPI int GetRenderHeight(void);                                  // Get current
 RLAPI int GetMonitorCount(void);                                  // Get number of connected monitors
 RLAPI int GetCurrentMonitor(void);                                // Get current connected monitor
 RLAPI Vector2 GetMonitorPosition(int monitor);                    // Get specified monitor position
-RLAPI int GetMonitorWidth(int monitor);                           // Get specified monitor width (max available by monitor)
+RLAPI int GetMonitorWidth(int monitor);                           // Get specified monitor width (current video mode used by monitor)
-RLAPI int GetMonitorHeight(int monitor);                          // Get specified monitor height (max available by monitor)
+RLAPI int GetMonitorHeight(int monitor);                          // Get specified monitor height (current video mode used by monitor)
 RLAPI int GetMonitorPhysicalWidth(int monitor);                   // Get specified monitor physical width in millimetres
 RLAPI int GetMonitorPhysicalHeight(int monitor);                  // Get specified monitor physical height in millimetres
 RLAPI int GetMonitorRefreshRate(int monitor);                     // Get specified monitor refresh rate
@@ -943,6 +961,8 @@ RLAPI Vector2 GetWindowScaleDPI(void);                            // Get window
 RLAPI const char *GetMonitorName(int monitor);                    // Get the human-readable, UTF-8 encoded name of the primary monitor
 RLAPI void SetClipboardText(const char *text);                    // Set clipboard text content
 RLAPI const char *GetClipboardText(void);                         // Get clipboard text content
+RLAPI void EnableEventWaiting(void);                              // Enable waiting for events on EndDrawing(), no automatic event polling
+RLAPI void DisableEventWaiting(void);                             // Disable waiting for events on EndDrawing(), automatic events polling
 
 // Custom frame control functions
 // NOTE: Those functions are intended for advance users that want full control over the frame processing
@@ -950,7 +970,7 @@ RLAPI const char *GetClipboardText(void);                         // Get clipboa
 // To avoid that behaviour and control frame processes manually, enable in config.h: SUPPORT_CUSTOM_FRAME_CONTROL
 RLAPI void SwapScreenBuffer(void);                                // Swap back buffer with front buffer (screen drawing)
 RLAPI void PollInputEvents(void);                                 // Register all input events
-RLAPI void WaitTime(float ms);                                    // Wait for some milliseconds (halt program execution)
+RLAPI void WaitTime(double seconds);                              // Wait for some time (halt program execution)
 
 // Cursor-related functions
 RLAPI void ShowCursor(void);                                      // Shows cursor
@@ -1000,9 +1020,9 @@ RLAPI Ray GetMouseRay(Vector2 mousePosition, Camera camera);      // Get a ray t
 RLAPI Matrix GetCameraMatrix(Camera camera);                      // Get camera transform matrix (view matrix)
 RLAPI Matrix GetCameraMatrix2D(Camera2D camera);                  // Get camera 2d transform matrix
 RLAPI Vector2 GetWorldToScreen(Vector3 position, Camera camera);  // Get the screen space position for a 3d world space position
+RLAPI Vector2 GetScreenToWorld2D(Vector2 position, Camera2D camera); // Get the world space position for a 2d camera screen space position
 RLAPI Vector2 GetWorldToScreenEx(Vector3 position, Camera camera, int width, int height); // Get size position for a 3d world space position
 RLAPI Vector2 GetWorldToScreen2D(Vector2 position, Camera2D camera); // Get the screen space position for a 2d camera world space position
-RLAPI Vector2 GetScreenToWorld2D(Vector2 position, Camera2D camera); // Get the world space position for a 2d camera screen space position
 
 // Timing-related functions
 RLAPI void SetTargetFPS(int fps);                                 // Set target FPS (maximum)
@@ -1022,6 +1042,8 @@ RLAPI void *MemAlloc(int size);                                   // Internal me
 RLAPI void *MemRealloc(void *ptr, int size);                      // Internal memory reallocator
 RLAPI void MemFree(void *ptr);                                    // Internal memory free
 
+RLAPI void OpenURL(const char *url);                              // Open URL with default system browser (if available)
+
 // Set custom callbacks
 // WARNING: Callbacks setup is intended for advance users
 RLAPI void SetTraceLogCallback(TraceLogCallback callback);         // Set custom trace log
@@ -1031,40 +1053,39 @@ RLAPI void SetLoadFileTextCallback(LoadFileTextCallback callback); // Set custom
 RLAPI void SetSaveFileTextCallback(SaveFileTextCallback callback); // Set custom file text data saver
 
 // Files management functions
-RLAPI unsigned char *LoadFileData(const char *fileName, unsigned int *bytesRead); // Load file data as byte array (read)
+RLAPI unsigned char *LoadFileData(const char *fileName, unsigned int *bytesRead);       // Load file data as byte array (read)
 RLAPI void UnloadFileData(unsigned char *data);                   // Unload file data allocated by LoadFileData()
-RLAPI bool SaveFileData(const char *fileName, void *data, unsigned int bytesToWrite); // Save data to file from byte array (write), returns true on success
+RLAPI bool SaveFileData(const char *fileName, void *data, unsigned int bytesToWrite);   // Save data to file from byte array (write), returns true on success
+RLAPI bool ExportDataAsCode(const char *data, unsigned int size, const char *fileName); // Export data to code (.h), returns true on success
 RLAPI char *LoadFileText(const char *fileName);                   // Load text data from file (read), returns a '\0' terminated string
 RLAPI void UnloadFileText(char *text);                            // Unload file text data allocated by LoadFileText()
 RLAPI bool SaveFileText(const char *fileName, char *text);        // Save text data to file (write), string must be '\0' terminated, returns true on success
 RLAPI bool FileExists(const char *fileName);                      // Check if file exists
 RLAPI bool DirectoryExists(const char *dirPath);                  // Check if a directory path exists
 RLAPI bool IsFileExtension(const char *fileName, const char *ext); // Check file extension (including point: .png, .wav)
+RLAPI int GetFileLength(const char *fileName);                    // Get file length in bytes (NOTE: GetFileSize() conflicts with windows.h)
 RLAPI const char *GetFileExtension(const char *fileName);         // Get pointer to extension for a filename string (includes dot: '.png')
 RLAPI const char *GetFileName(const char *filePath);              // Get pointer to filename for a path string
 RLAPI const char *GetFileNameWithoutExt(const char *filePath);    // Get filename string without extension (uses static string)
 RLAPI const char *GetDirectoryPath(const char *filePath);         // Get full path for a given fileName with path (uses static string)
 RLAPI const char *GetPrevDirectoryPath(const char *dirPath);      // Get previous directory path for a given path (uses static string)
 RLAPI const char *GetWorkingDirectory(void);                      // Get current working directory (uses static string)
-RLAPI char **GetDirectoryFiles(const char *dirPath, int *count);  // Get filenames in a directory path (memory should be freed)
+RLAPI const char *GetApplicationDirectory(void);                  // Get the directory if the running application (uses static string)
-RLAPI void ClearDirectoryFiles(void);                             // Clear directory files paths buffers (free memory)
 RLAPI bool ChangeDirectory(const char *dir);                      // Change working directory, return true on success
+RLAPI bool IsPathFile(const char *path);                          // Check if a given path is a file or a directory
+RLAPI FilePathList LoadDirectoryFiles(const char *dirPath);       // Load directory filepaths
+RLAPI FilePathList LoadDirectoryFilesEx(const char *basePath, const char *filter, bool scanSubdirs); // Load directory filepaths with extension filtering and recursive directory scan
+RLAPI void UnloadDirectoryFiles(FilePathList files);              // Unload filepaths
 RLAPI bool IsFileDropped(void);                                   // Check if a file has been dropped into window
-RLAPI char **GetDroppedFiles(int *count);                         // Get dropped files names (memory should be freed)
+RLAPI FilePathList LoadDroppedFiles(void);                        // Load dropped filepaths
-RLAPI void ClearDroppedFiles(void);                               // Clear dropped files paths buffer (free memory)
+RLAPI void UnloadDroppedFiles(FilePathList files);                // Unload dropped filepaths
 RLAPI long GetFileModTime(const char *fileName);                  // Get file modification time (last write time)
 
 // Compression/Encoding functionality
-RLAPI unsigned char *CompressData(unsigned char *data, int dataLength, int *compDataLength);        // Compress data (DEFLATE algorithm)
+RLAPI unsigned char *CompressData(const unsigned char *data, int dataSize, int *compDataSize);        // Compress data (DEFLATE algorithm), memory must be MemFree()
-RLAPI unsigned char *DecompressData(unsigned char *compData, int compDataLength, int *dataLength);  // Decompress data (DEFLATE algorithm)
+RLAPI unsigned char *DecompressData(const unsigned char *compData, int compDataSize, int *dataSize);  // Decompress data (DEFLATE algorithm), memory must be MemFree()
-RLAPI char *EncodeDataBase64(const unsigned char *data, int dataLength, int *outputLength);         // Encode data to Base64 string
+RLAPI char *EncodeDataBase64(const unsigned char *data, int dataSize, int *outputSize);               // Encode data to Base64 string, memory must be MemFree()
-RLAPI unsigned char *DecodeDataBase64(unsigned char *data, int *outputLength);                      // Decode Base64 string data
+RLAPI unsigned char *DecodeDataBase64(const unsigned char *data, int *outputSize);                    // Decode Base64 string data, memory must be MemFree()
-
-// Persistent storage management
-RLAPI bool SaveStorageValue(unsigned int position, int value);    // Save integer value to storage file (to defined position), returns true on success
-RLAPI int LoadStorageValue(unsigned int position);                // Load integer value from storage file (from defined position)
-
-RLAPI void OpenURL(const char *url);                              // Open URL with default system browser (if available)
 
 //------------------------------------------------------------------------------------
 // Input Handling Functions (Module: core)
@@ -1103,7 +1124,8 @@ RLAPI Vector2 GetMouseDelta(void);                            // Get mouse delta
 RLAPI void SetMousePosition(int x, int y);                    // Set mouse position XY
 RLAPI void SetMouseOffset(int offsetX, int offsetY);          // Set mouse offset
 RLAPI void SetMouseScale(float scaleX, float scaleY);         // Set mouse scaling
-RLAPI float GetMouseWheelMove(void);                          // Get mouse wheel movement Y
+RLAPI float GetMouseWheelMove(void);                          // Get mouse wheel movement for X or Y, whichever is larger
+RLAPI Vector2 GetMouseWheelMoveV(void);                       // Get mouse wheel movement for both X and Y
 RLAPI void SetMouseCursor(int cursor);                        // Set mouse cursor
 
 // Input-related functions: touch
@@ -1324,7 +1346,8 @@ RLAPI Font LoadFontFromMemory(const char *fileType, const unsigned char *fileDat
 RLAPI GlyphInfo *LoadFontData(const unsigned char *fileData, int dataSize, int fontSize, int *fontChars, int glyphCount, int type); // Load font data for further use
 RLAPI Image GenImageFontAtlas(const GlyphInfo *chars, Rectangle **recs, int glyphCount, int fontSize, int padding, int packMethod); // Generate image font atlas using chars info
 RLAPI void UnloadFontData(GlyphInfo *chars, int glyphCount);                                // Unload font chars info data (RAM)
-RLAPI void UnloadFont(Font font);                                                           // Unload Font from GPU memory (VRAM)
+RLAPI void UnloadFont(Font font);                                                           // Unload font from GPU memory (VRAM)
+RLAPI bool ExportFontAsCode(Font font, const char *fileName);                               // Export font as code file, returns true on success
 
 // Text drawing functions
 RLAPI void DrawFPS(int posX, int posY);                                                     // Draw current FPS
@@ -1332,6 +1355,7 @@ RLAPI void DrawText(const char *text, int posX, int posY, int fontSize, Color co
 RLAPI void DrawTextEx(Font font, const char *text, Vector2 position, float fontSize, float spacing, Color tint); // Draw text using font and additional parameters
 RLAPI void DrawTextPro(Font font, const char *text, Vector2 position, Vector2 origin, float rotation, float fontSize, float spacing, Color tint); // Draw text using Font and pro parameters (rotation)
 RLAPI void DrawTextCodepoint(Font font, int codepoint, Vector2 position, float fontSize, Color tint); // Draw one character (codepoint)
+RLAPI void DrawTextCodepoints(Font font, const int *codepoints, int count, Vector2 position, float fontSize, float spacing, Color tint); // Draw multiple character (codepoint)
 
 // Text font info functions
 RLAPI int MeasureText(const char *text, int fontSize);                                      // Measure string width for default font
@@ -1346,7 +1370,7 @@ RLAPI void UnloadCodepoints(int *codepoints);                         // Unload
 RLAPI int GetCodepointCount(const char *text);                        // Get total number of codepoints in a UTF-8 encoded string
 RLAPI int GetCodepoint(const char *text, int *bytesProcessed);        // Get next codepoint in a UTF-8 encoded string, 0x3f('?') is returned on failure
 RLAPI const char *CodepointToUTF8(int codepoint, int *byteSize);      // Encode one codepoint into UTF-8 byte array (array length returned as parameter)
-RLAPI char *TextCodepointsToUTF8(int *codepoints, int length);        // Encode text as codepoints array into UTF-8 text string (WARNING: memory must be freed!)
+RLAPI char *TextCodepointsToUTF8(const int *codepoints, int length);  // Encode text as codepoints array into UTF-8 text string (WARNING: memory must be freed!)
 
 // Text strings management functions (no UTF-8 strings, only byte chars)
 // NOTE: Some strings allocate memory internally for returned strings, just be careful!
@@ -1416,14 +1440,13 @@ RLAPI void DrawBillboardPro(Camera camera, Texture2D texture, Rectangle source,
 
 // Mesh management functions
 RLAPI void UploadMesh(Mesh *mesh, bool dynamic);                                            // Upload mesh vertex data in GPU and provide VAO/VBO ids
-RLAPI void UpdateMeshBuffer(Mesh mesh, int index, void *data, int dataSize, int offset);    // Update mesh vertex data in GPU for a specific buffer index
+RLAPI void UpdateMeshBuffer(Mesh mesh, int index, const void *data, int dataSize, int offset); // Update mesh vertex data in GPU for a specific buffer index
 RLAPI void UnloadMesh(Mesh mesh);                                                           // Unload mesh data from CPU and GPU
 RLAPI void DrawMesh(Mesh mesh, Material material, Matrix transform);                        // Draw a 3d mesh with material and transform
-RLAPI void DrawMeshInstanced(Mesh mesh, Material material, Matrix *transforms, int instances); // Draw multiple mesh instances with material and different transforms
+RLAPI void DrawMeshInstanced(Mesh mesh, Material material, const Matrix *transforms, int instances); // Draw multiple mesh instances with material and different transforms
 RLAPI bool ExportMesh(Mesh mesh, const char *fileName);                                     // Export mesh data to file, returns true on success
 RLAPI BoundingBox GetMeshBoundingBox(Mesh mesh);                                            // Compute mesh bounding box limits
 RLAPI void GenMeshTangents(Mesh *mesh);                                                     // Compute mesh tangents
-RLAPI void GenMeshBinormals(Mesh *mesh);                                                    // Compute mesh binormals
 
 // Mesh generation functions
 RLAPI Mesh GenMeshPoly(int sides, float radius);                                            // Generate polygonal mesh
@@ -1449,7 +1472,7 @@ RLAPI void SetModelMeshMaterial(Model *model, int meshId, int materialId);
 RLAPI ModelAnimation *LoadModelAnimations(const char *fileName, unsigned int *animCount);   // Load model animations from file
 RLAPI void UpdateModelAnimation(Model model, ModelAnimation anim, int frame);               // Update model animation pose
 RLAPI void UnloadModelAnimation(ModelAnimation anim);                                       // Unload animation data
-RLAPI void UnloadModelAnimations(ModelAnimation* animations, unsigned int count);           // Unload animation array data
+RLAPI void UnloadModelAnimations(ModelAnimation *animations, unsigned int count);           // Unload animation array data
 RLAPI bool IsModelAnimationValid(Model model, ModelAnimation anim);                         // Check model animation skeleton match
 
 // Collision detection functions
@@ -1458,7 +1481,6 @@ RLAPI bool CheckCollisionBoxes(BoundingBox box1, BoundingBox box2);
 RLAPI bool CheckCollisionBoxSphere(BoundingBox box, Vector3 center, float radius);                  // Check collision between box and sphere
 RLAPI RayCollision GetRayCollisionSphere(Ray ray, Vector3 center, float radius);                    // Get collision info between ray and sphere
 RLAPI RayCollision GetRayCollisionBox(Ray ray, BoundingBox box);                                    // Get collision info between ray and box
-RLAPI RayCollision GetRayCollisionModel(Ray ray, Model model);                                      // Get collision info between ray and model
 RLAPI RayCollision GetRayCollisionMesh(Ray ray, Mesh mesh, Matrix transform);                       // Get collision info between ray and mesh
 RLAPI RayCollision GetRayCollisionTriangle(Ray ray, Vector3 p1, Vector3 p2, Vector3 p3);            // Get collision info between ray and triangle
 RLAPI RayCollision GetRayCollisionQuad(Ray ray, Vector3 p1, Vector3 p2, Vector3 p3, Vector3 p4);    // Get collision info between ray and quad
@@ -1466,6 +1488,7 @@ RLAPI RayCollision GetRayCollisionQuad(Ray ray, Vector3 p1, Vector3 p2, Vector3
 //------------------------------------------------------------------------------------
 // Audio Loading and Playing Functions (Module: audio)
 //------------------------------------------------------------------------------------
+typedef void (*AudioCallback)(void *bufferData, unsigned int frames);
 
 // Audio device management functions
 RLAPI void InitAudioDevice(void);                                     // Initialize audio device and context
@@ -1495,15 +1518,16 @@ RLAPI int GetSoundsPlaying(void);                                     // Get num
 RLAPI bool IsSoundPlaying(Sound sound);                               // Check if a sound is currently playing
 RLAPI void SetSoundVolume(Sound sound, float volume);                 // Set volume for a sound (1.0 is max level)
 RLAPI void SetSoundPitch(Sound sound, float pitch);                   // Set pitch for a sound (1.0 is base level)
-RLAPI void WaveFormat(Wave *wave, int sampleRate, int sampleSize, int channels); // Convert wave data to desired format
+RLAPI void SetSoundPan(Sound sound, float pan);                       // Set pan for a sound (0.5 is center)
 RLAPI Wave WaveCopy(Wave wave);                                       // Copy a wave to a new wave
 RLAPI void WaveCrop(Wave *wave, int initSample, int finalSample);     // Crop a wave to defined samples range
-RLAPI float *LoadWaveSamples(Wave wave);                              // Load samples data from wave as a floats array
+RLAPI void WaveFormat(Wave *wave, int sampleRate, int sampleSize, int channels); // Convert wave data to desired format
+RLAPI float *LoadWaveSamples(Wave wave);                              // Load samples data from wave as a 32bit float data array
 RLAPI void UnloadWaveSamples(float *samples);                         // Unload samples data loaded with LoadWaveSamples()
 
 // Music management functions
 RLAPI Music LoadMusicStream(const char *fileName);                    // Load music stream from file
-RLAPI Music LoadMusicStreamFromMemory(const char *fileType, unsigned char *data, int dataSize); // Load music stream from data
+RLAPI Music LoadMusicStreamFromMemory(const char *fileType, const unsigned char *data, int dataSize); // Load music stream from data
 RLAPI void UnloadMusicStream(Music music);                            // Unload music stream
 RLAPI void PlayMusicStream(Music music);                              // Start music playing
 RLAPI bool IsMusicStreamPlaying(Music music);                         // Check if music is playing
@@ -1514,6 +1538,7 @@ RLAPI void ResumeMusicStream(Music music);                            // Resume
 RLAPI void SeekMusicStream(Music music, float position);              // Seek music to a position (in seconds)
 RLAPI void SetMusicVolume(Music music, float volume);                 // Set volume for music (1.0 is max level)
 RLAPI void SetMusicPitch(Music music, float pitch);                   // Set pitch for a music (1.0 is base level)
+RLAPI void SetMusicPan(Music music, float pan);                       // Set pan for a music (0.5 is center)
 RLAPI float GetMusicTimeLength(Music music);                          // Get music time length (in seconds)
 RLAPI float GetMusicTimePlayed(Music music);                          // Get current music time played (in seconds)
 
@@ -1529,7 +1554,12 @@ RLAPI bool IsAudioStreamPlaying(AudioStream stream);                  // Check i
 RLAPI void StopAudioStream(AudioStream stream);                       // Stop audio stream
 RLAPI void SetAudioStreamVolume(AudioStream stream, float volume);    // Set volume for audio stream (1.0 is max level)
 RLAPI void SetAudioStreamPitch(AudioStream stream, float pitch);      // Set pitch for audio stream (1.0 is base level)
+RLAPI void SetAudioStreamPan(AudioStream stream, float pan);          // Set pan for audio stream (0.5 is centered)
 RLAPI void SetAudioStreamBufferSizeDefault(int size);                 // Default size for new audio streams
+RLAPI void SetAudioStreamCallback(AudioStream stream, AudioCallback callback);  // Audio thread callback to request new data
+
+RLAPI void AttachAudioStreamProcessor(AudioStream stream, AudioCallback processor); // Attach audio stream processor to stream
+RLAPI void DetachAudioStreamProcessor(AudioStream stream, AudioCallback processor); // Detach audio stream processor from stream
 
 #if defined(__cplusplus)
 }

include/raymath.h

@@ -18,14 +18,14 @@
 *     - Functions are always self-contained, no function use another raymath function inside,
 *       required code is directly re-implemented inside
 *     - Functions input parameters are always received by value (2 unavoidable exceptions)
-*     - Functions use always a "result" anmed variable for return
+*     - Functions use always a "result" variable for return
 *     - Functions are always defined inline
 *     - Angles are always in radians (DEG2RAD/RAD2DEG macros provided for convenience)
 *
 *
 *   LICENSE: zlib/libpng
 *
-*   Copyright (c) 2015-2021 Ramon Santamaria (@raysan5)
+*   Copyright (c) 2015-2022 Ramon Santamaria (@raysan5)
 *
 *   This software is provided "as-is", without any express or implied warranty. In no event
 *   will the authors be held liable for any damages arising from the use of this software.
@@ -77,6 +77,10 @@
     #define PI 3.14159265358979323846f
 #endif
 
+#ifndef EPSILON
+    #define EPSILON 0.000001f
+#endif
+
 #ifndef DEG2RAD
     #define DEG2RAD (PI/180.0f)
 #endif
@@ -154,7 +158,7 @@ typedef struct float16 {
     float v[16];
 } float16;
 
-#include <math.h>       // Required for: sinf(), cosf(), tan(), atan2f(), sqrtf(), fminf(), fmaxf(), fabs()
+#include <math.h>       // Required for: sinf(), cosf(), tan(), atan2f(), sqrtf(), floor(), fminf(), fmaxf(), fabs()
 
 //----------------------------------------------------------------------------------
 // Module Functions Definition - Utils math
@@ -189,7 +193,23 @@ RMAPI float Normalize(float value, float start, float end)
 // Remap input value within input range to output range
 RMAPI float Remap(float value, float inputStart, float inputEnd, float outputStart, float outputEnd)
 {
-    float result =(value - inputStart)/(inputEnd - inputStart)*(outputEnd - outputStart) + outputStart;
+    float result = (value - inputStart)/(inputEnd - inputStart)*(outputEnd - outputStart) + outputStart;
+
+    return result;
+}
+
+// Wrap input value from min to max
+RMAPI float Wrap(float value, float min, float max)
+{
+    float result = value - (max - min)*floorf((value - min)/(max - min));
+
+    return result;
+}
+
+// Check whether two given floats are almost equal
+RMAPI int FloatEquals(float x, float y)
+{
+    int result = (fabsf(x - y)) <= (EPSILON*fmaxf(1.0f, fmaxf(fabsf(x), fabsf(y))));
 
     return result;
 }
@@ -278,11 +298,19 @@ RMAPI float Vector2Distance(Vector2 v1, Vector2 v2)
     return result;
 }
 
+// Calculate square distance between two vectors
+RMAPI float Vector2DistanceSqr(Vector2 v1, Vector2 v2)
+{
+    float result = ((v1.x - v2.x)*(v1.x - v2.x) + (v1.y - v2.y)*(v1.y - v2.y));
+
+    return result;
+}
+
 // Calculate angle from two vectors
 RMAPI float Vector2Angle(Vector2 v1, Vector2 v2)
 {
     float result = atan2f(v2.y, v2.x) - atan2f(v1.y, v1.x);
-    
+
     return result;
 }
 
@@ -334,6 +362,21 @@ RMAPI Vector2 Vector2Normalize(Vector2 v)
     return result;
 }
 
+// Transforms a Vector2 by a given Matrix
+RMAPI Vector2 Vector2Transform(Vector2 v, Matrix mat)
+{
+    Vector2 result = { 0 };
+
+    float x = v.x;
+    float y = v.y;
+    float z = 0;
+
+    result.x = mat.m0*x + mat.m4*y + mat.m8*z + mat.m12;
+    result.y = mat.m1*x + mat.m5*y + mat.m9*z + mat.m13;
+
+    return result;
+}
+
 // Calculate linear interpolation between two vectors
 RMAPI Vector2 Vector2Lerp(Vector2 v1, Vector2 v2, float amount)
 {
@@ -363,8 +406,11 @@ RMAPI Vector2 Vector2Rotate(Vector2 v, float angle)
 {
     Vector2 result = { 0 };
 
-    result.x = v.x*cosf(angle) - v.y*sinf(angle);
+    float cosres = cosf(angle);
-    result.y = v.x*sinf(angle) + v.y*cosf(angle);
+    float sinres = sinf(angle);
+
+    result.x = v.x*cosres - v.y*sinres;
+    result.y = v.x*sinres + v.y*cosres;
 
     return result;
 }
@@ -388,6 +434,62 @@ RMAPI Vector2 Vector2MoveTowards(Vector2 v, Vector2 target, float maxDistance)
     return result;
 }
 
+// Invert the given vector
+RMAPI Vector2 Vector2Invert(Vector2 v)
+{
+    Vector2 result = { 1.0f/v.x, 1.0f/v.y };
+
+    return result;
+}
+
+// Clamp the components of the vector between
+// min and max values specified by the given vectors
+RMAPI Vector2 Vector2Clamp(Vector2 v, Vector2 min, Vector2 max)
+{
+    Vector2 result = { 0 };
+
+    result.x = fminf(max.x, fmaxf(min.x, v.x));
+    result.y = fminf(max.y, fmaxf(min.y, v.y));
+
+    return result;
+}
+
+// Clamp the magnitude of the vector between two min and max values
+RMAPI Vector2 Vector2ClampValue(Vector2 v, float min, float max)
+{
+    Vector2 result = v;
+
+    float length = (v.x*v.x) + (v.y*v.y);
+    if (length > 0.0f)
+    {
+        length = sqrtf(length);
+
+        if (length < min)
+        {
+            float scale = min/length;
+            result.x = v.x*scale;
+            result.y = v.y*scale;
+        }
+        else if (length > max)
+        {
+            float scale = max/length;
+            result.x = v.x*scale;
+            result.y = v.y*scale;
+        }
+    }
+
+    return result;
+}
+
+// Check whether two given vectors are almost equal
+RMAPI int Vector2Equals(Vector2 p, Vector2 q)
+{
+    int result = ((fabsf(p.x - q.x)) <= (EPSILON*fmaxf(1.0f, fmaxf(fabsf(p.x), fabsf(q.x))))) &&
+                  ((fabsf(p.y - q.y)) <= (EPSILON*fmaxf(1.0f, fmaxf(fabsf(p.y), fabsf(q.y)))));
+
+    return result;
+}
+
 //----------------------------------------------------------------------------------
 // Module Functions Definition - Vector3 math
 //----------------------------------------------------------------------------------
@@ -472,14 +574,14 @@ RMAPI Vector3 Vector3Perpendicular(Vector3 v)
     float min = (float) fabs(v.x);
     Vector3 cardinalAxis = {1.0f, 0.0f, 0.0f};
 
-    if (fabs(v.y) < min)
+    if (fabsf(v.y) < min)
     {
         min = (float) fabs(v.y);
         Vector3 tmp = {0.0f, 1.0f, 0.0f};
         cardinalAxis = tmp;
     }
 
-    if (fabs(v.z) < min)
+    if (fabsf(v.z) < min)
     {
         Vector3 tmp = {0.0f, 0.0f, 1.0f};
         cardinalAxis = tmp;
@@ -530,16 +632,29 @@ RMAPI float Vector3Distance(Vector3 v1, Vector3 v2)
     return result;
 }
 
+// Calculate square distance between two vectors
+RMAPI float Vector3DistanceSqr(Vector3 v1, Vector3 v2)
+{
+    float result = 0.0f;
+
+    float dx = v2.x - v1.x;
+    float dy = v2.y - v1.y;
+    float dz = v2.z - v1.z;
+    result = dx*dx + dy*dy + dz*dz;
+
+    return result;
+}
+
 // Calculate angle between two vectors
 RMAPI float Vector3Angle(Vector3 v1, Vector3 v2)
 {
     float result = 0.0f;
-    
+
     Vector3 cross = { v1.y*v2.z - v1.z*v2.y, v1.z*v2.x - v1.x*v2.z, v1.x*v2.y - v1.y*v2.x };
     float len = sqrtf(cross.x*cross.x + cross.y*cross.y + cross.z*cross.z);
     float dot = (v1.x*v2.x + v1.y*v2.y + v1.z*v2.z);
     result = atan2f(len, dot);
-    
+
     return result;
 }
 
@@ -638,6 +753,58 @@ RMAPI Vector3 Vector3RotateByQuaternion(Vector3 v, Quaternion q)
     return result;
 }
 
+// Rotates a vector around an axis
+RMAPI Vector3 Vector3RotateByAxisAngle(Vector3 v, Vector3 axis, float angle)
+{
+    // Using Euler-Rodrigues Formula
+    // Ref.: https://en.wikipedia.org/w/index.php?title=Euler%E2%80%93Rodrigues_formula
+
+    Vector3 result = v;
+
+    // Vector3Normalize(axis);
+    float length = sqrtf(axis.x * axis.x + axis.y * axis.y + axis.z * axis.z);
+    if (length == 0.0f) length = 1.0f;
+    float ilength = 1.0f / length;
+    axis.x *= ilength;
+    axis.y *= ilength;
+    axis.z *= ilength;
+
+    angle /= 2.0f;
+    float a = sinf(angle);
+    float b = axis.x * a;
+    float c = axis.y * a;
+    float d = axis.z * a;
+    a = cosf(angle);
+    Vector3 w = { b, c, d };
+
+    // Vector3CrossProduct(w, v)
+    Vector3 wv = { w.y * v.z - w.z * v.y, w.z * v.x - w.x * v.z, w.x * v.y - w.y * v.x };
+
+    // Vector3CrossProduct(w, wv)
+    Vector3 wwv = { w.y * wv.z - w.z * wv.y, w.z * wv.x - w.x * wv.z, w.x * wv.y - w.y * wv.x };
+
+    // Vector3Scale(wv, 2 * a)
+    a *= 2;
+    wv.x *= a;
+    wv.y *= a;
+    wv.z *= a;
+
+    // Vector3Scale(wwv, 2)
+    wwv.x *= 2;
+    wwv.y *= 2;
+    wwv.z *= 2;
+
+    result.x += wv.x;
+    result.y += wv.y;
+    result.z += wv.z;
+
+    result.x += wwv.x;
+    result.y += wwv.y;
+    result.z += wwv.z;
+
+    return result;
+}
+
 // Calculate linear interpolation between two vectors
 RMAPI Vector3 Vector3Lerp(Vector3 v1, Vector3 v2, float amount)
 {
@@ -812,6 +979,92 @@ RMAPI float3 Vector3ToFloatV(Vector3 v)
     return buffer;
 }
 
+// Invert the given vector
+RMAPI Vector3 Vector3Invert(Vector3 v)
+{
+    Vector3 result = { 1.0f/v.x, 1.0f/v.y, 1.0f/v.z };
+
+    return result;
+}
+
+// Clamp the components of the vector between
+// min and max values specified by the given vectors
+RMAPI Vector3 Vector3Clamp(Vector3 v, Vector3 min, Vector3 max)
+{
+    Vector3 result = { 0 };
+
+    result.x = fminf(max.x, fmaxf(min.x, v.x));
+    result.y = fminf(max.y, fmaxf(min.y, v.y));
+    result.z = fminf(max.z, fmaxf(min.z, v.z));
+
+    return result;
+}
+
+// Clamp the magnitude of the vector between two values
+RMAPI Vector3 Vector3ClampValue(Vector3 v, float min, float max)
+{
+    Vector3 result = v;
+
+    float length = (v.x*v.x) + (v.y*v.y) + (v.z*v.z);
+    if (length > 0.0f)
+    {
+        length = sqrtf(length);
+
+        if (length < min)
+        {
+            float scale = min/length;
+            result.x = v.x*scale;
+            result.y = v.y*scale;
+            result.z = v.z*scale;
+        }
+        else if (length > max)
+        {
+            float scale = max/length;
+            result.x = v.x*scale;
+            result.y = v.y*scale;
+            result.z = v.z*scale;
+        }
+    }
+
+    return result;
+}
+
+// Check whether two given vectors are almost equal
+RMAPI int Vector3Equals(Vector3 p, Vector3 q)
+{
+    int result = ((fabsf(p.x - q.x)) <= (EPSILON*fmaxf(1.0f, fmaxf(fabsf(p.x), fabsf(q.x))))) &&
+                  ((fabsf(p.y - q.y)) <= (EPSILON*fmaxf(1.0f, fmaxf(fabsf(p.y), fabsf(q.y))))) &&
+                  ((fabsf(p.z - q.z)) <= (EPSILON*fmaxf(1.0f, fmaxf(fabsf(p.z), fabsf(q.z)))));
+
+    return result;
+}
+
+// Compute the direction of a refracted ray where v specifies the
+// normalized direction of the incoming ray, n specifies the
+// normalized normal vector of the interface of two optical media,
+// and r specifies the ratio of the refractive index of the medium
+// from where the ray comes to the refractive index of the medium
+// on the other side of the surface
+RMAPI Vector3 Vector3Refract(Vector3 v, Vector3 n, float r)
+{
+    Vector3 result = { 0 };
+
+    float dot = v.x*n.x + v.y*n.y + v.z*n.z;
+    float d = 1.0f - r*r*(1.0f - dot*dot);
+
+    if (d >= 0.0f)
+    {
+        d = sqrtf(d);
+        v.x = r*v.x - (r*dot + d)*n.x;
+        v.y = r*v.y - (r*dot + d)*n.y;
+        v.z = r*v.z - (r*dot + d)*n.z;
+
+        result = v;
+    }
+
+    return result;
+}
+
 //----------------------------------------------------------------------------------
 // Module Functions Definition - Matrix math
 //----------------------------------------------------------------------------------
@@ -917,45 +1170,6 @@ RMAPI Matrix MatrixInvert(Matrix mat)
     return result;
 }
 
-// Normalize provided matrix
-RMAPI Matrix MatrixNormalize(Matrix mat)
-{
-    Matrix result = { 0 };
-
-    // Cache the matrix values (speed optimization)
-    float a00 = mat.m0, a01 = mat.m1, a02 = mat.m2, a03 = mat.m3;
-    float a10 = mat.m4, a11 = mat.m5, a12 = mat.m6, a13 = mat.m7;
-    float a20 = mat.m8, a21 = mat.m9, a22 = mat.m10, a23 = mat.m11;
-    float a30 = mat.m12, a31 = mat.m13, a32 = mat.m14, a33 = mat.m15;
-
-    // MatrixDeterminant(mat)
-    float det = a30*a21*a12*a03 - a20*a31*a12*a03 - a30*a11*a22*a03 + a10*a31*a22*a03 +
-                a20*a11*a32*a03 - a10*a21*a32*a03 - a30*a21*a02*a13 + a20*a31*a02*a13 +
-                a30*a01*a22*a13 - a00*a31*a22*a13 - a20*a01*a32*a13 + a00*a21*a32*a13 +
-                a30*a11*a02*a23 - a10*a31*a02*a23 - a30*a01*a12*a23 + a00*a31*a12*a23 +
-                a10*a01*a32*a23 - a00*a11*a32*a23 - a20*a11*a02*a33 + a10*a21*a02*a33 +
-                a20*a01*a12*a33 - a00*a21*a12*a33 - a10*a01*a22*a33 + a00*a11*a22*a33;
-
-    result.m0 = mat.m0/det;
-    result.m1 = mat.m1/det;
-    result.m2 = mat.m2/det;
-    result.m3 = mat.m3/det;
-    result.m4 = mat.m4/det;
-    result.m5 = mat.m5/det;
-    result.m6 = mat.m6/det;
-    result.m7 = mat.m7/det;
-    result.m8 = mat.m8/det;
-    result.m9 = mat.m9/det;
-    result.m10 = mat.m10/det;
-    result.m11 = mat.m11/det;
-    result.m12 = mat.m12/det;
-    result.m13 = mat.m13/det;
-    result.m14 = mat.m14/det;
-    result.m15 = mat.m15/det;
-
-    return result;
-}
-
 // Get identity matrix
 RMAPI Matrix MatrixIdentity(void)
 {
@@ -1099,7 +1313,8 @@ RMAPI Matrix MatrixRotate(Vector3 axis, float angle)
     return result;
 }
 
-// Get x-rotation matrix (angle in radians)
+// Get x-rotation matrix
+// NOTE: Angle must be provided in radians
 RMAPI Matrix MatrixRotateX(float angle)
 {
     Matrix result = { 1.0f, 0.0f, 0.0f, 0.0f,
@@ -1111,14 +1326,15 @@ RMAPI Matrix MatrixRotateX(float angle)
     float sinres = sinf(angle);
 
     result.m5 = cosres;
-    result.m6 = -sinres;
+    result.m6 = sinres;
-    result.m9 = sinres;
+    result.m9 = -sinres;
     result.m10 = cosres;
 
     return result;
 }
 
-// Get y-rotation matrix (angle in radians)
+// Get y-rotation matrix
+// NOTE: Angle must be provided in radians
 RMAPI Matrix MatrixRotateY(float angle)
 {
     Matrix result = { 1.0f, 0.0f, 0.0f, 0.0f,
@@ -1130,14 +1346,15 @@ RMAPI Matrix MatrixRotateY(float angle)
     float sinres = sinf(angle);
 
     result.m0 = cosres;
-    result.m2 = sinres;
+    result.m2 = -sinres;
-    result.m8 = -sinres;
+    result.m8 = sinres;
     result.m10 = cosres;
 
     return result;
 }
 
-// Get z-rotation matrix (angle in radians)
+// Get z-rotation matrix
+// NOTE: Angle must be provided in radians
 RMAPI Matrix MatrixRotateZ(float angle)
 {
     Matrix result = { 1.0f, 0.0f, 0.0f, 0.0f,
@@ -1149,74 +1366,76 @@ RMAPI Matrix MatrixRotateZ(float angle)
     float sinres = sinf(angle);
 
     result.m0 = cosres;
-    result.m1 = -sinres;
+    result.m1 = sinres;
-    result.m4 = sinres;
+    result.m4 = -sinres;
     result.m5 = cosres;
 
     return result;
 }
 
 
-// Get xyz-rotation matrix (angles in radians)
+// Get xyz-rotation matrix
-RMAPI Matrix MatrixRotateXYZ(Vector3 ang)
+// NOTE: Angle must be provided in radians
+RMAPI Matrix MatrixRotateXYZ(Vector3 angle)
 {
     Matrix result = { 1.0f, 0.0f, 0.0f, 0.0f,
                       0.0f, 1.0f, 0.0f, 0.0f,
                       0.0f, 0.0f, 1.0f, 0.0f,
                       0.0f, 0.0f, 0.0f, 1.0f }; // MatrixIdentity()
 
-    float cosz = cosf(-ang.z);
+    float cosz = cosf(-angle.z);
-    float sinz = sinf(-ang.z);
+    float sinz = sinf(-angle.z);
-    float cosy = cosf(-ang.y);
+    float cosy = cosf(-angle.y);
-    float siny = sinf(-ang.y);
+    float siny = sinf(-angle.y);
-    float cosx = cosf(-ang.x);
+    float cosx = cosf(-angle.x);
-    float sinx = sinf(-ang.x);
+    float sinx = sinf(-angle.x);
 
     result.m0 = cosz*cosy;
-    result.m4 = (cosz*siny*sinx) - (sinz*cosx);
+    result.m1 = (cosz*siny*sinx) - (sinz*cosx);
-    result.m8 = (cosz*siny*cosx) + (sinz*sinx);
+    result.m2 = (cosz*siny*cosx) + (sinz*sinx);
 
-    result.m1 = sinz*cosy;
+    result.m4 = sinz*cosy;
     result.m5 = (sinz*siny*sinx) + (cosz*cosx);
-    result.m9 = (sinz*siny*cosx) - (cosz*sinx);
+    result.m6 = (sinz*siny*cosx) - (cosz*sinx);
 
-    result.m2 = -siny;
+    result.m8 = -siny;
-    result.m6 = cosy*sinx;
+    result.m9 = cosy*sinx;
     result.m10= cosy*cosx;
 
     return result;
 }
 
-// Get zyx-rotation matrix (angles in radians)
+// Get zyx-rotation matrix
-RMAPI Matrix MatrixRotateZYX(Vector3 ang)
+// NOTE: Angle must be provided in radians
+RMAPI Matrix MatrixRotateZYX(Vector3 angle)
 {
     Matrix result = { 0 };
 
-    float cz = cosf(ang.z);
+    float cz = cosf(angle.z);
-    float sz = sinf(ang.z);
+    float sz = sinf(angle.z);
-    float cy = cosf(ang.y);
+    float cy = cosf(angle.y);
-    float sy = sinf(ang.y);
+    float sy = sinf(angle.y);
-    float cx = cosf(ang.x);
+    float cx = cosf(angle.x);
-    float sx = sinf(ang.x);
+    float sx = sinf(angle.x);
 
     result.m0 = cz*cy;
-    result.m1 = cz*sy*sx - cx*sz;
+    result.m4 = cz*sy*sx - cx*sz;
-    result.m2 = sz*sx + cz*cx*sy;
+    result.m8 = sz*sx + cz*cx*sy;
-    result.m3 = 0;
-
-    result.m4 = cy*sz;
-    result.m5 = cz*cx + sz*sy*sx;
-    result.m6 = cx*sz*sy - cz*sx;
-    result.m7 = 0;
-
-    result.m8 = -sy;
-    result.m9 = cy*sx;
-    result.m10 = cy*cx;
-    result.m11 = 0;
-
     result.m12 = 0;
+
+    result.m1 = cy*sz;
+    result.m5 = cz*cx + sz*sy*sx;
+    result.m9 = cx*sz*sy - cz*sx;
     result.m13 = 0;
+
+    result.m2 = -sy;
+    result.m6 = cy*sx;
+    result.m10 = cy*cx;
     result.m14 = 0;
+
+    result.m3 = 0;
+    result.m7 = 0;
+    result.m11 = 0;
     result.m15 = 1;
 
     return result;
@@ -1266,7 +1485,7 @@ RMAPI Matrix MatrixFrustum(double left, double right, double bottom, double top,
 }
 
 // Get perspective projection matrix
-// NOTE: Angle should be provided in radians
+// NOTE: Fovy angle must be provided in radians
 RMAPI Matrix MatrixPerspective(double fovy, double aspect, double near, double far)
 {
     Matrix result = { 0 };
@@ -1475,10 +1694,9 @@ RMAPI Quaternion QuaternionInvert(Quaternion q)
 {
     Quaternion result = q;
 
-    float length = sqrtf(q.x*q.x + q.y*q.y + q.z*q.z + q.w*q.w);
+    float lengthSq = q.x*q.x + q.y*q.y + q.z*q.z + q.w*q.w;
-    float lengthSq = length*length;
 
-    if (lengthSq != 0.0)
+    if (lengthSq != 0.0f)
     {
         float invLength = 1.0f/lengthSq;
 
@@ -1512,12 +1730,10 @@ RMAPI Quaternion QuaternionScale(Quaternion q, float mul)
 {
     Quaternion result = { 0 };
 
-    float qax = q.x, qay = q.y, qaz = q.z, qaw = q.w;
+    result.x = q.x*mul;
-
+    result.y = q.y*mul;
-    result.x = qax*mul + qaw*mul + qay*mul - qaz*mul;
+    result.z = q.z*mul;
-    result.y = qay*mul + qaw*mul + qaz*mul - qax*mul;
+    result.w = q.w*mul;
-    result.z = qaz*mul + qaw*mul + qax*mul - qay*mul;
-    result.w = qaw*mul - qax*mul - qay*mul - qaz*mul;
 
     return result;
 }
@@ -1581,14 +1797,14 @@ RMAPI Quaternion QuaternionSlerp(Quaternion q1, Quaternion q2, float amount)
         cosHalfTheta = -cosHalfTheta;
     }
 
-    if (fabs(cosHalfTheta) >= 1.0f) result = q1;
+    if (fabsf(cosHalfTheta) >= 1.0f) result = q1;
     else if (cosHalfTheta > 0.95f) result = QuaternionNlerp(q1, q2, amount);
     else
     {
         float halfTheta = acosf(cosHalfTheta);
         float sinHalfTheta = sqrtf(1.0f - cosHalfTheta*cosHalfTheta);
 
-        if (fabs(sinHalfTheta) < 0.001f)
+        if (fabsf(sinHalfTheta) < 0.001f)
         {
             result.x = (q1.x*0.5f + q2.x*0.5f);
             result.y = (q1.y*0.5f + q2.y*0.5f);
@@ -1643,30 +1859,60 @@ RMAPI Quaternion QuaternionFromMatrix(Matrix mat)
 {
     Quaternion result = { 0 };
 
-    if ((mat.m0 > mat.m5) && (mat.m0 > mat.m10))
+    float fourWSquaredMinus1 = mat.m0 + mat.m5 + mat.m10;
-    {
+    float fourXSquaredMinus1 = mat.m0 - mat.m5 - mat.m10;
-        float s = sqrtf(1.0f + mat.m0 - mat.m5 - mat.m10)*2;
+    float fourYSquaredMinus1 = mat.m5 - mat.m0 - mat.m10;
+    float fourZSquaredMinus1 = mat.m10 - mat.m0 - mat.m5;
 
-        result.x = 0.25f*s;
+    int biggestIndex = 0;
-        result.y = (mat.m4 + mat.m1)/s;
+    float fourBiggestSquaredMinus1 = fourWSquaredMinus1;
-        result.z = (mat.m2 + mat.m8)/s;
+    if (fourXSquaredMinus1 > fourBiggestSquaredMinus1)
-        result.w = (mat.m9 - mat.m6)/s;
-    }
-    else if (mat.m5 > mat.m10)
     {
-        float s = sqrtf(1.0f + mat.m5 - mat.m0 - mat.m10)*2;
+        fourBiggestSquaredMinus1 = fourXSquaredMinus1;
-        result.x = (mat.m4 + mat.m1)/s;
+        biggestIndex = 1;
-        result.y = 0.25f*s;
-        result.z = (mat.m9 + mat.m6)/s;
-        result.w = (mat.m2 - mat.m8)/s;
     }
-    else
+
+    if (fourYSquaredMinus1 > fourBiggestSquaredMinus1)
     {
-        float s = sqrtf(1.0f + mat.m10 - mat.m0 - mat.m5)*2;
+        fourBiggestSquaredMinus1 = fourYSquaredMinus1;
-        result.x = (mat.m2 + mat.m8)/s;
+        biggestIndex = 2;
-        result.y = (mat.m9 + mat.m6)/s;
+    }
-        result.z = 0.25f*s;
+
-        result.w = (mat.m4 - mat.m1)/s;
+    if (fourZSquaredMinus1 > fourBiggestSquaredMinus1)
+    {
+        fourBiggestSquaredMinus1 = fourZSquaredMinus1;
+        biggestIndex = 3;
+    }
+
+    float biggestVal = sqrtf(fourBiggestSquaredMinus1 + 1.0f) * 0.5f;
+    float mult = 0.25f / biggestVal;
+
+    switch (biggestIndex)
+    {
+        case 0:
+            result.w = biggestVal;
+            result.x = (mat.m6 - mat.m9) * mult;
+            result.y = (mat.m8 - mat.m2) * mult;
+            result.z = (mat.m1 - mat.m4) * mult;
+            break;
+        case 1:
+            result.x = biggestVal;
+            result.w = (mat.m6 - mat.m9) * mult;
+            result.y = (mat.m1 + mat.m4) * mult;
+            result.z = (mat.m8 + mat.m2) * mult;
+            break;
+        case 2:
+            result.y = biggestVal;
+            result.w = (mat.m8 - mat.m2) * mult;
+            result.x = (mat.m1 + mat.m4) * mult;
+            result.z = (mat.m6 + mat.m9) * mult;
+            break;
+        case 3:
+            result.z = biggestVal;
+            result.w = (mat.m1 - mat.m4) * mult;
+            result.x = (mat.m8 + mat.m2) * mult;
+            result.y = (mat.m6 + mat.m9) * mult;
+            break;
     }
 
     return result;
@@ -1706,7 +1952,7 @@ RMAPI Matrix QuaternionToMatrix(Quaternion q)
 }
 
 // Get rotation quaternion for an angle and axis
-// NOTE: angle must be provided in radians
+// NOTE: Angle must be provided in radians
 RMAPI Quaternion QuaternionFromAxisAngle(Vector3 axis, float angle)
 {
     Quaternion result = { 0.0f, 0.0f, 0.0f, 1.0f };
@@ -1754,7 +2000,7 @@ RMAPI Quaternion QuaternionFromAxisAngle(Vector3 axis, float angle)
 // Get the rotation angle and axis for a given quaternion
 RMAPI void QuaternionToAxisAngle(Quaternion q, Vector3 *outAxis, float *outAngle)
 {
-    if (fabs(q.w) > 1.0f)
+    if (fabsf(q.w) > 1.0f)
     {
         // QuaternionNormalize(q);
         float length = sqrtf(q.x*q.x + q.y*q.y + q.z*q.z + q.w*q.w);
@@ -1847,4 +2093,19 @@ RMAPI Quaternion QuaternionTransform(Quaternion q, Matrix mat)
     return result;
 }
 
+// Check whether two given quaternions are almost equal
+RMAPI int QuaternionEquals(Quaternion p, Quaternion q)
+{
+    int result = (((fabsf(p.x - q.x)) <= (EPSILON*fmaxf(1.0f, fmaxf(fabsf(p.x), fabsf(q.x))))) &&
+                  ((fabsf(p.y - q.y)) <= (EPSILON*fmaxf(1.0f, fmaxf(fabsf(p.y), fabsf(q.y))))) &&
+                  ((fabsf(p.z - q.z)) <= (EPSILON*fmaxf(1.0f, fmaxf(fabsf(p.z), fabsf(q.z))))) &&
+                  ((fabsf(p.w - q.w)) <= (EPSILON*fmaxf(1.0f, fmaxf(fabsf(p.w), fabsf(q.w)))))) ||
+                  (((fabsf(p.x + q.x)) <= (EPSILON*fmaxf(1.0f, fmaxf(fabsf(p.x), fabsf(q.x))))) &&
+                  ((fabsf(p.y + q.y)) <= (EPSILON*fmaxf(1.0f, fmaxf(fabsf(p.y), fabsf(q.y))))) &&
+                  ((fabsf(p.z + q.z)) <= (EPSILON*fmaxf(1.0f, fmaxf(fabsf(p.z), fabsf(q.z))))) &&
+                  ((fabsf(p.w + q.w)) <= (EPSILON*fmaxf(1.0f, fmaxf(fabsf(p.w), fabsf(q.w))))));
+
+    return result;
+}
+
 #endif  // RAYMATH_H

include/rlgl.h

@@ -85,7 +85,7 @@
 *
 *   LICENSE: zlib/libpng
 *
-*   Copyright (c) 2014-2021 Ramon Santamaria (@raysan5)
+*   Copyright (c) 2014-2022 Ramon Santamaria (@raysan5)
 *
 *   This software is provided "as-is", without any express or implied warranty. In no event
 *   will the authors be held liable for any damages arising from the use of this software.
@@ -358,11 +358,11 @@ typedef struct rlRenderBatch {
     float currentDepth;         // Current depth value for next draw
 } rlRenderBatch;
 
-#if defined(__STDC__) && __STDC_VERSION__ >= 199901L
+#if (defined(__STDC__) && __STDC_VERSION__ >= 199901L) || (defined(_MSC_VER) && _MSC_VER >= 1800)
     #include <stdbool.h>
 #elif !defined(__cplusplus) && !defined(bool) && !defined(RL_BOOL_TYPE)
     // Boolean type
-    typedef enum bool { false, true } bool;
+typedef enum bool { false = 0, true = !false } bool;
 #endif
 
 #if !defined(RL_MATRIX_TYPE)
@@ -433,7 +433,8 @@ typedef enum {
     RL_BLEND_MULTIPLIED,               // Blend textures multiplying colors
     RL_BLEND_ADD_COLORS,               // Blend textures adding colors (alternative)
     RL_BLEND_SUBTRACT_COLORS,          // Blend textures subtracting colors (alternative)
-    RL_BLEND_CUSTOM                    // Belnd textures using custom src/dst factors (use SetBlendModeCustom())
+    RL_BLEND_ALPHA_PREMULTIPLY,        // Blend premultiplied textures considering alpha
+    RL_BLEND_CUSTOM                    // Blend textures using custom src/dst factors (use rlSetBlendFactors())
 } rlBlendMode;
 
 // Shader location point type
@@ -597,7 +598,9 @@ RLAPI void rlglInit(int width, int height);           // Initialize rlgl (buffer
 RLAPI void rlglClose(void);                           // De-inititialize rlgl (buffers, shaders, textures)
 RLAPI void rlLoadExtensions(void *loader);            // Load OpenGL extensions (loader function required)
 RLAPI int rlGetVersion(void);                         // Get current OpenGL version
+RLAPI void rlSetFramebufferWidth(int width);          // Set current framebuffer width
 RLAPI int rlGetFramebufferWidth(void);                // Get default framebuffer width
+RLAPI void rlSetFramebufferHeight(int height);        // Set current framebuffer height
 RLAPI int rlGetFramebufferHeight(void);               // Get default framebuffer height
 
 RLAPI unsigned int rlGetTextureIdDefault(void);       // Get default texture id
@@ -619,25 +622,26 @@ RLAPI void rlSetTexture(unsigned int id);           // Set current texture for r
 
 // Vertex buffers management
 RLAPI unsigned int rlLoadVertexArray(void);                               // Load vertex array (vao) if supported
-RLAPI unsigned int rlLoadVertexBuffer(void *buffer, int size, bool dynamic);            // Load a vertex buffer attribute
+RLAPI unsigned int rlLoadVertexBuffer(const void *buffer, int size, bool dynamic);            // Load a vertex buffer attribute
-RLAPI unsigned int rlLoadVertexBufferElement(void *buffer, int size, bool dynamic);     // Load a new attributes element buffer
+RLAPI unsigned int rlLoadVertexBufferElement(const void *buffer, int size, bool dynamic);     // Load a new attributes element buffer
-RLAPI void rlUpdateVertexBuffer(unsigned int bufferId, void *data, int dataSize, int offset);    // Update GPU buffer with new data
+RLAPI void rlUpdateVertexBuffer(unsigned int bufferId, const void *data, int dataSize, int offset);     // Update GPU buffer with new data
+RLAPI void rlUpdateVertexBufferElements(unsigned int id, const void *data, int dataSize, int offset);   // Update vertex buffer elements with new data
 RLAPI void rlUnloadVertexArray(unsigned int vaoId);
 RLAPI void rlUnloadVertexBuffer(unsigned int vboId);
-RLAPI void rlSetVertexAttribute(unsigned int index, int compSize, int type, bool normalized, int stride, void *pointer);
+RLAPI void rlSetVertexAttribute(unsigned int index, int compSize, int type, bool normalized, int stride, const void *pointer);
 RLAPI void rlSetVertexAttributeDivisor(unsigned int index, int divisor);
 RLAPI void rlSetVertexAttributeDefault(int locIndex, const void *value, int attribType, int count); // Set vertex attribute default value
 RLAPI void rlDrawVertexArray(int offset, int count);
-RLAPI void rlDrawVertexArrayElements(int offset, int count, void *buffer);
+RLAPI void rlDrawVertexArrayElements(int offset, int count, const void *buffer);
 RLAPI void rlDrawVertexArrayInstanced(int offset, int count, int instances);
-RLAPI void rlDrawVertexArrayElementsInstanced(int offset, int count, void *buffer, int instances);
+RLAPI void rlDrawVertexArrayElementsInstanced(int offset, int count, const void *buffer, int instances);
 
 // Textures management
-RLAPI unsigned int rlLoadTexture(void *data, int width, int height, int format, int mipmapCount); // Load texture in GPU
+RLAPI unsigned int rlLoadTexture(const void *data, int width, int height, int format, int mipmapCount); // Load texture in GPU
 RLAPI unsigned int rlLoadTextureDepth(int width, int height, bool useRenderBuffer);               // Load depth texture/renderbuffer (to be attached to fbo)
-RLAPI unsigned int rlLoadTextureCubemap(void *data, int size, int format);                        // Load texture cubemap
+RLAPI unsigned int rlLoadTextureCubemap(const void *data, int size, int format);                        // Load texture cubemap
 RLAPI void rlUpdateTexture(unsigned int id, int offsetX, int offsetY, int width, int height, int format, const void *data);  // Update GPU texture with new data
-RLAPI void rlGetGlTextureFormats(int format, int *glInternalFormat, int *glFormat, int *glType);  // Get OpenGL internal formats
+RLAPI void rlGetGlTextureFormats(int format, unsigned int *glInternalFormat, unsigned int *glFormat, unsigned int *glType);  // Get OpenGL internal formats
 RLAPI const char *rlGetPixelFormatName(unsigned int format);              // Get name string for pixel format
 RLAPI void rlUnloadTexture(unsigned int id);                              // Unload texture from GPU memory
 RLAPI void rlGenTextureMipmaps(unsigned int id, int width, int height, int format, int *mipmaps); // Generate mipmap data for selected texture
@@ -713,7 +717,7 @@ RLAPI void rlLoadDrawQuad(void);     // Load and draw a quad
         #include <OpenGL/glext.h>       // OpenGL extensions library
     #else
         // APIENTRY for OpenGL function pointer declarations is required
-        #ifndef APIENTRY
+        #if !defined(APIENTRY)
             #if defined(_WIN32)
                 #define APIENTRY __stdcall
             #else
@@ -925,8 +929,8 @@ typedef struct rlglData {
         int glBlendDstFactor;               // Blending destination factor
         int glBlendEquation;                // Blending equation
 
-        int framebufferWidth;               // Default framebuffer width
+        int framebufferWidth;               // Current framebuffer width
-        int framebufferHeight;              // Default framebuffer height
+        int framebufferHeight;              // Current framebuffer height
 
     } State;            // Renderer state
     struct {
@@ -1228,6 +1232,7 @@ void rlOrtho(double left, double right, double bottom, double top, double znear,
 #endif
 
 // Set the viewport area (transformation from normalized device coordinates to window coordinates)
+// NOTE: We store current viewport dimensions
 void rlViewport(int x, int y, int width, int height)
 {
     glViewport(x, y, width, height);
@@ -1512,6 +1517,11 @@ void rlTextureParameters(unsigned int id, int param, int value)
 {
     glBindTexture(GL_TEXTURE_2D, id);
 
+#if !defined(GRAPHICS_API_OPENGL_11)
+    // Reset anisotropy filter, in case it was set
+    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, 1.0f);
+#endif
+
     switch (param)
     {
         case RL_TEXTURE_WRAP_S:
@@ -1535,7 +1545,7 @@ void rlTextureParameters(unsigned int id, int param, int value)
             if (value <= RLGL.ExtSupported.maxAnisotropyLevel) glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, (float)value);
             else if (RLGL.ExtSupported.maxAnisotropyLevel > 0.0f)
             {
-                TRACELOG(RL_LOG_WARNING, "GL: Maximum anisotropic filter level supported is %iX", id, RLGL.ExtSupported.maxAnisotropyLevel);
+                TRACELOG(RL_LOG_WARNING, "GL: Maximum anisotropic filter level supported is %iX", id, (int)RLGL.ExtSupported.maxAnisotropyLevel);
                 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, (float)value);
             }
             else TRACELOG(RL_LOG_WARNING, "GL: Anisotropic filtering not supported");
@@ -1778,7 +1788,12 @@ void rlSetBlendMode(int mode)
             case RL_BLEND_MULTIPLIED: glBlendFunc(GL_DST_COLOR, GL_ONE_MINUS_SRC_ALPHA); glBlendEquation(GL_FUNC_ADD); break;
             case RL_BLEND_ADD_COLORS: glBlendFunc(GL_ONE, GL_ONE); glBlendEquation(GL_FUNC_ADD); break;
             case RL_BLEND_SUBTRACT_COLORS: glBlendFunc(GL_ONE, GL_ONE); glBlendEquation(GL_FUNC_SUBTRACT); break;
-            case RL_BLEND_CUSTOM: glBlendFunc(RLGL.State.glBlendSrcFactor, RLGL.State.glBlendDstFactor); glBlendEquation(RLGL.State.glBlendEquation); break;
+            case RL_BLEND_ALPHA_PREMULTIPLY: glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA); glBlendEquation(GL_FUNC_ADD); break;
+            case RL_BLEND_CUSTOM:
+            {
+                // NOTE: Using GL blend src/dst factors and GL equation configured with rlSetBlendFactors()
+                glBlendFunc(RLGL.State.glBlendSrcFactor, RLGL.State.glBlendDstFactor); glBlendEquation(RLGL.State.glBlendEquation);
+            } break;
             default: break;
         }
 
@@ -2212,6 +2227,22 @@ int rlGetVersion(void)
     return glVersion;
 }
 
+// Set current framebuffer width
+void rlSetFramebufferWidth(int width)
+{
+#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2)
+    RLGL.State.framebufferWidth = width;
+#endif
+}
+
+// Set current framebuffer height
+void rlSetFramebufferHeight(int height)
+{
+#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2)
+    RLGL.State.framebufferHeight = height;
+#endif
+}
+
 // Get default framebuffer width
 int rlGetFramebufferWidth(void)
 {
@@ -2594,6 +2625,9 @@ void rlDrawRenderBatch(rlRenderBatch *batch)
 
         glUseProgram(0);    // Unbind shader program
     }
+
+    // Restore viewport to default measures
+    if (eyeCount == 2) rlViewport(0, 0, RLGL.State.framebufferWidth, RLGL.State.framebufferHeight);
     //------------------------------------------------------------------------------------------------------------
 
     // Reset batch buffers
@@ -2676,7 +2710,7 @@ bool rlCheckRenderBatchLimit(int vCount)
 // Textures data management
 //-----------------------------------------------------------------------------------------
 // Convert image data to OpenGL texture (returns OpenGL valid Id)
-unsigned int rlLoadTexture(void *data, int width, int height, int format, int mipmapCount)
+unsigned int rlLoadTexture(const void *data, int width, int height, int format, int mipmapCount)
 {
     glBindTexture(GL_TEXTURE_2D, 0);    // Free any old binding
 
@@ -2738,7 +2772,7 @@ unsigned int rlLoadTexture(void *data, int width, int height, int format, int mi
     {
         unsigned int mipSize = rlGetPixelDataSize(mipWidth, mipHeight, format);
 
-        int glInternalFormat, glFormat, glType;
+        unsigned int glInternalFormat, glFormat, glType;
         rlGetGlTextureFormats(format, &glInternalFormat, &glFormat, &glType);
 
         TRACELOGD("TEXTURE: Load mipmap level %i (%i x %i), size: %i, offset: %i", i, mipWidth, mipHeight, mipSize, mipOffset);
@@ -2878,7 +2912,7 @@ unsigned int rlLoadTextureDepth(int width, int height, bool useRenderBuffer)
 // Load texture cubemap
 // NOTE: Cubemap data is expected to be 6 images in a single data array (one after the other),
 // expected the following convention: +X, -X, +Y, -Y, +Z, -Z
-unsigned int rlLoadTextureCubemap(void *data, int size, int format)
+unsigned int rlLoadTextureCubemap(const void *data, int size, int format)
 {
     unsigned int id = 0;
 
@@ -2888,7 +2922,7 @@ unsigned int rlLoadTextureCubemap(void *data, int size, int format)
     glGenTextures(1, &id);
     glBindTexture(GL_TEXTURE_CUBE_MAP, id);
 
-    int glInternalFormat, glFormat, glType;
+    unsigned int glInternalFormat, glFormat, glType;
     rlGetGlTextureFormats(format, &glInternalFormat, &glFormat, &glType);
 
     if (glInternalFormat != -1)
@@ -2960,7 +2994,7 @@ void rlUpdateTexture(unsigned int id, int offsetX, int offsetY, int width, int h
 {
     glBindTexture(GL_TEXTURE_2D, id);
 
-    int glInternalFormat, glFormat, glType;
+    unsigned int glInternalFormat, glFormat, glType;
     rlGetGlTextureFormats(format, &glInternalFormat, &glFormat, &glType);
 
     if ((glInternalFormat != -1) && (format < RL_PIXELFORMAT_COMPRESSED_DXT1_RGB))
@@ -2971,11 +3005,11 @@ void rlUpdateTexture(unsigned int id, int offsetX, int offsetY, int width, int h
 }
 
 // Get OpenGL internal formats and data type from raylib PixelFormat
-void rlGetGlTextureFormats(int format, int *glInternalFormat, int *glFormat, int *glType)
+void rlGetGlTextureFormats(int format, unsigned int *glInternalFormat, unsigned int *glFormat, unsigned int *glType)
 {
-    *glInternalFormat = -1;
+    *glInternalFormat = 0;
-    *glFormat = -1;
+    *glFormat = 0;
-    *glType = -1;
+    *glType = 0;
 
     switch (format)
     {
@@ -3081,14 +3115,11 @@ void rlGenTextureMipmaps(unsigned int id, int width, int height, int format, int
 #if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2)
     if ((texIsPOT) || (RLGL.ExtSupported.texNPOT))
     {
-        //glHint(GL_GENERATE_MIPMAP_HINT, GL_DONT_CARE);   // Hint for mipmaps generation algorythm: GL_FASTEST, GL_NICEST, GL_DONT_CARE
+        //glHint(GL_GENERATE_MIPMAP_HINT, GL_DONT_CARE);   // Hint for mipmaps generation algorithm: GL_FASTEST, GL_NICEST, GL_DONT_CARE
         glGenerateMipmap(GL_TEXTURE_2D);    // Generate mipmaps automatically
 
-        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+        #define MIN(a,b) (((a)<(b))? (a):(b))
-        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);   // Activate Trilinear filtering for mipmaps
+        #define MAX(a,b) (((a)>(b))? (a):(b))
-
-        #define MIN(a,b) (((a)<(b))?(a):(b))
-        #define MAX(a,b) (((a)>(b))?(a):(b))
 
         *mipmaps = 1 + (int)floor(log(MAX(width, height))/log(2));
         TRACELOG(RL_LOG_INFO, "TEXTURE: [ID %i] Mipmaps generated automatically, total: %i", id, *mipmaps);
@@ -3121,7 +3152,7 @@ void *rlReadTexturePixels(unsigned int id, int width, int height, int format)
     // GL_UNPACK_ALIGNMENT affects operations that write to OpenGL memory (glTexImage, etc.)
     glPixelStorei(GL_PACK_ALIGNMENT, 1);
 
-    int glInternalFormat, glFormat, glType;
+    unsigned int glInternalFormat, glFormat, glType;
     rlGetGlTextureFormats(format, &glInternalFormat, &glFormat, &glType);
     unsigned int size = rlGetPixelDataSize(width, height, format);
 
@@ -3164,7 +3195,6 @@ void *rlReadTexturePixels(unsigned int id, int width, int height, int format)
     return pixels;
 }
 
-
 // Read screen pixel data (color buffer)
 unsigned char *rlReadScreenPixels(int width, int height)
 {
@@ -3313,7 +3343,7 @@ void rlUnloadFramebuffer(unsigned int id)
 // Vertex data management
 //-----------------------------------------------------------------------------------------
 // Load a new attributes buffer
-unsigned int rlLoadVertexBuffer(void *buffer, int size, bool dynamic)
+unsigned int rlLoadVertexBuffer(const void *buffer, int size, bool dynamic)
 {
     unsigned int id = 0;
 
@@ -3327,7 +3357,7 @@ unsigned int rlLoadVertexBuffer(void *buffer, int size, bool dynamic)
 }
 
 // Load a new attributes element buffer
-unsigned int rlLoadVertexBufferElement(void *buffer, int size, bool dynamic)
+unsigned int rlLoadVertexBufferElement(const void *buffer, int size, bool dynamic)
 {
     unsigned int id = 0;
 
@@ -3374,7 +3404,7 @@ void rlDisableVertexBufferElement(void)
 
 // Update vertex buffer with new data
 // NOTE: dataSize and offset must be provided in bytes
-void rlUpdateVertexBuffer(unsigned int id, void *data, int dataSize, int offset)
+void rlUpdateVertexBuffer(unsigned int id, const void *data, int dataSize, int offset)
 {
 #if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2)
     glBindBuffer(GL_ARRAY_BUFFER, id);
@@ -3384,7 +3414,7 @@ void rlUpdateVertexBuffer(unsigned int id, void *data, int dataSize, int offset)
 
 // Update vertex buffer elements with new data
 // NOTE: dataSize and offset must be provided in bytes
-void rlUpdateVertexBufferElements(unsigned int id, void *data, int dataSize, int offset)
+void rlUpdateVertexBufferElements(unsigned int id, const void *data, int dataSize, int offset)
 {
 #if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2)
     glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, id);
@@ -3437,9 +3467,9 @@ void rlDrawVertexArray(int offset, int count)
 }
 
 // Draw vertex array elements
-void rlDrawVertexArrayElements(int offset, int count, void *buffer)
+void rlDrawVertexArrayElements(int offset, int count, const void *buffer)
 {
-    glDrawElements(GL_TRIANGLES, count, GL_UNSIGNED_SHORT, (unsigned short *)buffer + offset);
+    glDrawElements(GL_TRIANGLES, count, GL_UNSIGNED_SHORT, (const unsigned short *)buffer + offset);
 }
 
 // Draw vertex array instanced
@@ -3451,10 +3481,10 @@ void rlDrawVertexArrayInstanced(int offset, int count, int instances)
 }
 
 // Draw vertex array elements instanced
-void rlDrawVertexArrayElementsInstanced(int offset, int count, void *buffer, int instances)
+void rlDrawVertexArrayElementsInstanced(int offset, int count, const void *buffer, int instances)
 {
 #if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2)
-    glDrawElementsInstanced(GL_TRIANGLES, count, GL_UNSIGNED_SHORT, (unsigned short *)buffer + offset, instances);
+    glDrawElementsInstanced(GL_TRIANGLES, count, GL_UNSIGNED_SHORT, (const unsigned short *)buffer + offset, instances);
 #endif
 }
 
@@ -3495,7 +3525,7 @@ unsigned int rlLoadVertexArray(void)
 }
 
 // Set vertex attribute
-void rlSetVertexAttribute(unsigned int index, int compSize, int type, bool normalized, int stride, void *pointer)
+void rlSetVertexAttribute(unsigned int index, int compSize, int type, bool normalized, int stride, const void *pointer)
 {
 #if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2)
     glVertexAttribPointer(index, compSize, type, normalized, stride, pointer);
@@ -3541,56 +3571,69 @@ unsigned int rlLoadShaderCode(const char *vsCode, const char *fsCode)
     unsigned int id = 0;
 
 #if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2)
-    unsigned int vertexShaderId = RLGL.State.defaultVShaderId;
+    unsigned int vertexShaderId = 0;
-    unsigned int fragmentShaderId = RLGL.State.defaultFShaderId;
+    unsigned int fragmentShaderId = 0;
 
+    // Compile vertex shader (if provided)
     if (vsCode != NULL) vertexShaderId = rlCompileShader(vsCode, GL_VERTEX_SHADER);
-    if (fsCode != NULL) fragmentShaderId = rlCompileShader(fsCode, GL_FRAGMENT_SHADER);
+    // In case no vertex shader was provided or compilation failed, we use default vertex shader
+    if (vertexShaderId == 0) vertexShaderId = RLGL.State.defaultVShaderId;
 
+    // Compile fragment shader (if provided)
+    if (fsCode != NULL) fragmentShaderId = rlCompileShader(fsCode, GL_FRAGMENT_SHADER);
+    // In case no fragment shader was provided or compilation failed, we use default fragment shader
+    if (fragmentShaderId == 0) fragmentShaderId = RLGL.State.defaultFShaderId;
+
+    // In case vertex and fragment shader are the default ones, no need to recompile, we can just assign the default shader program id
     if ((vertexShaderId == RLGL.State.defaultVShaderId) && (fragmentShaderId == RLGL.State.defaultFShaderId)) id = RLGL.State.defaultShaderId;
     else
     {
+        // One of or both shader are new, we need to compile a new shader program
         id = rlLoadShaderProgram(vertexShaderId, fragmentShaderId);
 
+        // We can detach and delete vertex/fragment shaders (if not default ones)
+        // NOTE: We detach shader before deletion to make sure memory is freed
         if (vertexShaderId != RLGL.State.defaultVShaderId)
         {
-            // Detach shader before deletion to make sure memory is freed
             glDetachShader(id, vertexShaderId);
             glDeleteShader(vertexShaderId);
         }
         if (fragmentShaderId != RLGL.State.defaultFShaderId)
         {
-            // Detach shader before deletion to make sure memory is freed
             glDetachShader(id, fragmentShaderId);
             glDeleteShader(fragmentShaderId);
         }
 
+        // In case shader program loading failed, we assign default shader
         if (id == 0)
         {
-            TRACELOG(RL_LOG_WARNING, "SHADER: Failed to load custom shader code");
+            // In case shader loading fails, we return the default shader
+            TRACELOG(RL_LOG_WARNING, "SHADER: Failed to load custom shader code, using default shader");
             id = RLGL.State.defaultShaderId;
         }
-    }
+        /*
+        else
+        {
+            // Get available shader uniforms
+            // NOTE: This information is useful for debug...
+            int uniformCount = -1;
+            glGetProgramiv(id, GL_ACTIVE_UNIFORMS, &uniformCount);
 
-    // Get available shader uniforms
+            for (int i = 0; i < uniformCount; i++)
-    // NOTE: This information is useful for debug...
+            {
-    int uniformCount = -1;
+                int namelen = -1;
+                int num = -1;
+                char name[256] = { 0 };     // Assume no variable names longer than 256
+                GLenum type = GL_ZERO;
 
-    glGetProgramiv(id, GL_ACTIVE_UNIFORMS, &uniformCount);
+                // Get the name of the uniforms
+                glGetActiveUniform(id, i, sizeof(name) - 1, &namelen, &num, &type, name);
 
-    for (int i = 0; i < uniformCount; i++)
+                name[namelen] = 0;
-    {
+                TRACELOGD("SHADER: [ID %i] Active uniform (%s) set at location: %i", id, name, glGetUniformLocation(id, name));
-        int namelen = -1;
+            }
-        int num = -1;
+        }
-        char name[256] = { 0 };     // Assume no variable names longer than 256
+        */
-        GLenum type = GL_ZERO;
-
-        // Get the name of the uniforms
-        glGetActiveUniform(id, i, sizeof(name) - 1, &namelen, &num, &type, name);
-
-        name[namelen] = 0;
-
-        TRACELOGD("SHADER: [ID %i] Active uniform (%s) set at location: %i", id, name, glGetUniformLocation(id, name));
     }
 #endif
 
@@ -3629,7 +3672,7 @@ unsigned int rlCompileShader(const char *shaderCode, int type)
         if (maxLength > 0)
         {
             int length = 0;
-            char *log = RL_CALLOC(maxLength, sizeof(char));
+            char *log = (char *)RL_CALLOC(maxLength, sizeof(char));
             glGetShaderInfoLog(shader, maxLength, &length, log);
             TRACELOG(RL_LOG_WARNING, "SHADER: [ID %i] Compile error: %s", shader, log);
             RL_FREE(log);
@@ -3691,7 +3734,7 @@ unsigned int rlLoadShaderProgram(unsigned int vShaderId, unsigned int fShaderId)
         if (maxLength > 0)
         {
             int length = 0;
-            char *log = RL_CALLOC(maxLength, sizeof(char));
+            char *log = (char *)RL_CALLOC(maxLength, sizeof(char));
             glGetProgramInfoLog(program, maxLength, &length, log);
             TRACELOG(RL_LOG_WARNING, "SHADER: [ID %i] Link error: %s", program, log);
             RL_FREE(log);
@@ -3858,7 +3901,7 @@ unsigned int rlLoadComputeShaderProgram(unsigned int shaderId)
         if (maxLength > 0)
         {
             int length = 0;
-            char *log = RL_CALLOC(maxLength, sizeof(char));
+            char *log = (char *)RL_CALLOC(maxLength, sizeof(char));
             glGetProgramInfoLog(program, maxLength, &length, log);
             TRACELOG(RL_LOG_WARNING, "SHADER: [ID %i] Link error: %s", program, log);
             RL_FREE(log);
@@ -3894,7 +3937,7 @@ void rlComputeShaderDispatch(unsigned int groupX, unsigned int groupY, unsigned
 unsigned int rlLoadShaderBuffer(unsigned long long size, const void *data, int usageHint)
 {
     unsigned int ssbo = 0;
-    
+
 #if defined(GRAPHICS_API_OPENGL_43)
     glGenBuffers(1, &ssbo);
     glBindBuffer(GL_SHADER_STORAGE_BUFFER, ssbo);
@@ -3927,7 +3970,7 @@ void rlUpdateShaderBufferElements(unsigned int id, const void *data, unsigned lo
 unsigned long long rlGetShaderBufferSize(unsigned int id)
 {
     long long size = 0;
-    
+
 #if defined(GRAPHICS_API_OPENGL_43)
     glBindBuffer(GL_SHADER_STORAGE_BUFFER, id);
     glGetInteger64v(GL_SHADER_STORAGE_BUFFER_SIZE, &size);
@@ -3967,7 +4010,7 @@ void rlCopyBuffersElements(unsigned int destId, unsigned int srcId, unsigned lon
 void rlBindImageTexture(unsigned int id, unsigned int index, unsigned int format, int readonly)
 {
 #if defined(GRAPHICS_API_OPENGL_43)
-    int glInternalFormat = 0, glFormat = 0, glType = 0;
+    unsigned int glInternalFormat = 0, glFormat = 0, glType = 0;
 
     rlGetGlTextureFormats(format, &glInternalFormat, &glFormat, &glType);
     glBindImageTexture(index, id, 0, 0, 0, readonly ? GL_READ_ONLY : GL_READ_WRITE, glInternalFormat);
@@ -4338,7 +4381,8 @@ static void rlLoadShaderDefault(void)
     "}                                  \n";
 #endif
 
-    // NOTE: Compiled vertex/fragment shaders are kept for re-use
+    // NOTE: Compiled vertex/fragment shaders are not deleted,
+    // they are kept for re-use as default shaders in case some shader loading fails
     RLGL.State.defaultVShaderId = rlCompileShader(defaultVShaderCode, GL_VERTEX_SHADER);     // Compile default vertex shader
     RLGL.State.defaultFShaderId = rlCompileShader(defaultFShaderCode, GL_FRAGMENT_SHADER);   // Compile default fragment shader
 

src/audio.c

@@ -520,6 +520,30 @@ int laudioSetSoundPitch( lua_State *L ) {
 	return 1;
 }
 
+/*
+> success = RL_SetSoundPan( Sound sound, float pan )
+
+Set pan for a sound ( 0.5 is center )
+
+- Failure return false
+- Success return true
+*/
+int laudioSetSoundPan( lua_State *L ) {
+	if ( !lua_isnumber( L, -2 ) || !lua_isnumber( L, -1 ) ) {
+		TraceLog( LOG_WARNING, "%s", "Bad call of function. RL_SetSoundPan( Sound sound, float pitch )" );
+		lua_pushboolean( L, false );
+		return 1;
+	}
+	if ( !validSound( lua_tointeger( L, -2 ) ) ) {
+		lua_pushboolean( L, false );
+		return 1;
+	}
+	SetSoundPan( *state->sounds[ lua_tointeger( L, -2 ) ], lua_tonumber( L, -1 ) );
+	lua_pushboolean( L, true );
+
+	return 1;
+}
+
 /*
 > success = RL_WaveFormat( Wave wave, int sampleRate, int sampleSize, int channels )
 
@@ -760,6 +784,26 @@ int laudioSetMusicPitch( lua_State *L ) {
 	return 1;
 }
 
+/*
+> success = RL_SetMusicPan( float pan )
+
+Set pan for a music ( 0.5 is center )
+
+- Failure return false
+- Success return true
+*/
+int laudioSetMusicPan( lua_State *L ) {
+	if ( !lua_isnumber( L, -1 ) ) {
+		TraceLog( LOG_WARNING, "%s", "Bad call of function. RL_SetMusicPan( float pan )" );
+		lua_pushboolean( L, false );
+		return 1;
+	}
+	SetMusicPitch( state->music, lua_tonumber( L, -1 ) );
+	lua_pushboolean( L, true );
+
+	return 1;
+}
+
 /*
 > length = RL_GetMusicTimeLength()
 

src/core.c

@@ -2172,29 +2172,28 @@ int lcoreGetWorkingDirectory( lua_State *L ) {
 }
 
 /*
-> fileNames = RL_GetDirectoryFiles( string dirPath )
+> fileNames = RL_LoadDirectoryFiles( string dirPath )
 
-Get filenames in a directory path
+Load directory filepaths
 
 - Failure return false
 - Success return string{}
 */
-int lcoreGetDirectoryFiles( lua_State *L ) {
+int lcoreLoadDirectoryFiles( lua_State *L ) {
 	if ( !lua_isstring( L, -1 ) ) {
-		TraceLog( LOG_WARNING, "%s", "Bad call of function. RL_GetDirectoryFiles( string dirPath )" );
+		TraceLog( LOG_WARNING, "%s", "Bad call of function. RL_LoadDirectoryFiles( string dirPath )" );
 		lua_pushboolean( L, false );
 		return 1;
 	}
-	int count = 0;
+	FilePathList files = LoadDirectoryFiles( lua_tostring( L, -1 ) );
-	char **strings = GetDirectoryFiles( lua_tostring( L, -1 ), &count );
 
-	lua_createtable( L, count, 0 );
+	lua_createtable( L, files.count, 0 );
 
-	for ( int i = 0; i < count; ++i ) {
+	for ( int i = 0; i < files.count; ++i ) {
-		lua_pushstring( L, strings[i] );
+		lua_pushstring( L, files.paths[i] );
     	lua_rawseti( L, -2, i+1 );
 	}
-	ClearDirectoryFiles();
+	UnloadDirectoryFiles( files );
 
 	return 1;
 }
@@ -2230,24 +2229,22 @@ int lcoreIsFileDropped( lua_State *L ) {
 }
 
 /*
-> files = RL_GetDroppedFiles()
+> files = RL_LoadDroppedFiles()
 
-Get dropped files names
+Load dropped filepaths
 
 - Success return string{}
 */
-int lcoreGetDroppedFiles( lua_State *L ) {
+int lcoreLoadDroppedFiles( lua_State *L ) {
-	int count = 0;
+	FilePathList files = LoadDroppedFiles();
-	char **files = GetDroppedFiles( &count );
 
-	lua_createtable( L, count, 0 );
+	lua_createtable( L, files.count, 0 );
 
-	for ( int i = 0; i < count; ++i ) {
+	for ( int i = 0; i < files.count; ++i ) {
-		lua_pushstring( L, files[i] );
+		lua_pushstring( L, files.paths[i] );
 		lua_rawseti( L, -2, i+1 );
 	}
-
+	UnloadDroppedFiles( files );
-	ClearDroppedFiles();
 
 	return 1;
 }

src/lua_core.c

@@ -529,9 +529,6 @@ bool luaInit() {
 	luaRegister();
 	defineGlobals();
 
-	// SetConfigFlags( FLAG_VSYNC_HINT );
-	// SetWindowState( FLAG_VSYNC_HINT );
-
 	return luaCallMain();
 }
 
@@ -546,7 +543,7 @@ int luaTraceback( lua_State *L ) {
 	lua_getfield( L, -1, "traceback" );
 
 	if ( !lua_isfunction( L, -1 ) ) {
-		lua_pop(L, 2);
+		lua_pop( L, 2 );
 		return 1;
 	}
 
@@ -623,11 +620,6 @@ void luaCallProcess() {
  	    	return;
         }
     }
-    // else {
-	// 	TraceLog( LOG_WARNING, "%s", "No Lua process found!" );
-	// 	state->run = false;
-    //     return;
-    // }
 	lua_pop( L, -1 );
 }
 
@@ -649,11 +641,6 @@ void luaCallDraw() {
 
 		EndDrawing();
     }
-    // else {
-	// 	TraceLog( LOG_WARNING, "%s", "No Lua render found!" );
-	// 	state->run = false;
-    //     return;
-    // }
 	lua_pop( L, -1 );
 }
 
@@ -742,10 +729,10 @@ void luaRegister() {
 	lua_register( L, "RL_GetDirectoryPath", lcoreGetDirectoryPath );
 	lua_register( L, "RL_GetPrevDirectoryPath", lcoreGetPrevDirectoryPath );
 	lua_register( L, "RL_GetWorkingDirectory", lcoreGetWorkingDirectory );
-	lua_register( L, "RL_GetDirectoryFiles", lcoreGetDirectoryFiles );
+	lua_register( L, "RL_LoadDirectoryFiles", lcoreLoadDirectoryFiles );
 	lua_register( L, "RL_ChangeDirectory", lcoreChangeDirectory );
 	lua_register( L, "RL_IsFileDropped", lcoreIsFileDropped );
-	lua_register( L, "RL_GetDroppedFiles", lcoreGetDroppedFiles );
+	lua_register( L, "RL_LoadDroppedFiles", lcoreLoadDroppedFiles );
 	lua_register( L, "RL_GetFileModTime", lcoreGetFileModTime );
 		/* Camera2D. */
 	lua_register( L, "RL_CreateCamera2D", lcoreCreateCamera2D );
@@ -1014,7 +1001,6 @@ void luaRegister() {
 	lua_register( L, "RL_ExportMesh", lmodelsExportMesh );
 	lua_register( L, "RL_GetMeshBoundingBox", lmodelsGetMeshBoundingBox );
 	lua_register( L, "RL_GenMeshTangents", lmodelsGenMeshTangents );
-	lua_register( L, "RL_GenMeshBinormals", lmodelsGenMeshBinormals );
 		/* Material. */
 	lua_register( L, "RL_LoadMaterialDefault", lmodelsLoadMaterialDefault );
 	lua_register( L, "RL_CreateMaterial", lmodelsCreateMaterial );
@@ -1047,7 +1033,6 @@ void luaRegister() {
 	lua_register( L, "RL_CheckCollisionBoxSphere", lmodelsCheckCollisionBoxSphere );
 	lua_register( L, "RL_GetRayCollisionSphere", lmodelsGetRayCollisionSphere );
 	lua_register( L, "RL_GetRayCollisionBox", lmodelsGetRayCollisionBox );
-	lua_register( L, "RL_GetRayCollisionModel", lmodelsGetRayCollisionModel );
 	lua_register( L, "RL_GetRayCollisionMesh", lmodelsGetRayCollisionMesh );
 	lua_register( L, "RL_GetRayCollisionTriangle", lmodelsGetRayCollisionTriangle );
 	lua_register( L, "RL_GetRayCollisionQuad", lmodelsGetRayCollisionQuad );
@@ -1089,6 +1074,7 @@ void luaRegister() {
 	lua_register( L, "RL_IsSoundPlaying", laudioIsSoundPlaying );
 	lua_register( L, "RL_SetSoundVolume", laudioSetSoundVolume );
 	lua_register( L, "RL_SetSoundPitch", laudioSetSoundPitch );
+	lua_register( L, "RL_SetSoundPan", laudioSetSoundPan );
 	lua_register( L, "RL_WaveFormat", laudioWaveFormat );
 	lua_register( L, "RL_WaveCopy", laudioWaveCopy );
 	lua_register( L, "RL_WaveCrop", laudioWaveCrop );
@@ -1101,6 +1087,7 @@ void luaRegister() {
 	lua_register( L, "RL_ResumeMusicStream", laudioResumeMusicStream );
 	lua_register( L, "RL_SetMusicVolume", laudioSetMusicVolume );
 	lua_register( L, "RL_SetMusicPitch", laudioSetMusicPitch );
+	lua_register( L, "RL_SetMusicPan", laudioSetMusicPan );
 	lua_register( L, "RL_GetMusicTimeLength", laudioGetMusicTimeLength );
 	lua_register( L, "RL_GetMusicTimePlayed", laudioGetMusicTimePlayed );
 

src/models.c

@@ -1451,32 +1451,6 @@ int lmodelsGenMeshTangents( lua_State *L ) {
 	return 1;
 }
 
-/*
-> success = RL_GenMeshBinormals( Mesh mesh )
-
-Compute mesh binormals
-
-- Failure return false
-- Success return true
-*/
-int lmodelsGenMeshBinormals( lua_State *L ) {
-	if ( !lua_isnumber( L, -1 ) ) {
-		TraceLog( LOG_WARNING, "%s", "Bad call of function. RL_GenMeshBinormals( Mesh mesh )" );
-		lua_pushboolean( L, false );
-		return 1;
-	}
-	size_t meshId = lua_tointeger( L, -1 );
-
-	if ( !validMesh( meshId ) ) {
-		lua_pushboolean( L, false );
-		return 1;
-	}
-	GenMeshBinormals( state->meshes[ meshId ] );
-	lua_pushboolean( L, true );
-
-	return 1;
-}
-
 /*
 ## Models - Material
 */
@@ -2385,33 +2359,6 @@ int lmodelsGetRayCollisionBox( lua_State *L ) {
 	return 1;
 }
 
-/*
-> rayCollision = RL_GetRayCollisionModel( Ray ray, Model model )
-
-Get collision info between ray and model
-
-- Failure return nil
-- Success return RayCollision
-*/
-int lmodelsGetRayCollisionModel( lua_State *L ) {
-	if ( !lua_istable( L, -2 ) || !lua_isnumber( L, -1 ) ) {
-		TraceLog( LOG_WARNING, "%s", "Bad call of function. RL_GetRayCollisionModel( Ray ray, Model model )" );
-		lua_pushnil( L );
-		return 1;
-	}
-	size_t modelId = lua_tointeger( L, -1 );
-	lua_pop( L, 1 );
-	Ray ray = uluaGetRay( L );
-
-	if ( !validModel( modelId ) ) {
-		lua_pushnil( L );
-		return 1;
-	}
-	uluaPushRayCollision( L, GetRayCollisionModel( ray, *state->models[ modelId ] ) );
-
-	return 1;
-}
-
 /*
 > rayCollision = RL_GetRayCollisionMesh( Ray ray, Mesh mesh, Matrix transform )
 

src/state.c

@@ -13,7 +13,7 @@ bool stateInit( const char *exePath ) {
 
 	state->hasWindow = true;
 	state->run = true;
-	state->resolution = (Vector2){ 1024, 720 };
+	state->resolution = (Vector2){ 800, 600 };
 	state->luaState = NULL;
 	state->textureSource = TEXTURE_SOURCE_TEXTURE;
 	/* Images. */
@@ -93,7 +93,7 @@ bool stateInit( const char *exePath ) {
 			state->materials[i] = NULL;
 		}
 	}
-	
+
     InitWindow( state->resolution.x, state->resolution.y, "ReiLua" );
 	/* Has to be after InitWindod where opengl context is created. */
 	state->materials[0] = malloc( sizeof( Material ) );