Merge branch 'master' of https://github.com/raysan5/raylib

As the license for previous bunny was not clear, it was replaced by a new custom bunny specifically created for this example with a CC0 license

examples/Makefile

@@ -703,6 +703,7 @@ SHADERS = \
     shaders/shaders_vertex_displacement
 
 AUDIO = \
+	audio/audio_fft_spectrum_visualizer \
     audio/audio_mixed_processor \
     audio/audio_module_playing \
     audio/audio_music_stream \

examples/audio/audio_fft_spectrum_visualizer.c

@@ -0,0 +1,279 @@
+/*******************************************************************************************
+*
+*   raylib [audio] example - fft spectrum visualizer
+*
+*   Example complexity rating: [★★★☆] 3/4
+*
+*   Example originally created with raylib 6.0
+*
+*   Inspired by Inigo Quilez's https://www.shadertoy.com/
+*   Resources/specification: https://gist.github.com/soulthreads/2efe50da4be1fb5f7ab60ff14ca434b8
+*
+*   Example created by created by IANN (@meisei4) reviewed by Ramon Santamaria (@raysan5)
+*
+*   Example 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) 2025 IANN (@meisei4)
+*
+********************************************************************************************/
+
+#include "raylib.h"
+#include "raymath.h"
+#include <math.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define MONO                           1
+#define SAMPLE_RATE                    44100
+#define SAMPLE_RATE_F                  44100.0f
+#define FFT_WINDOW_SIZE                1024
+#define BUFFER_SIZE                    512
+#define PER_SAMPLE_BIT_DEPTH           16
+#define AUDIO_STREAM_RING_BUFFER_SIZE  (FFT_WINDOW_SIZE*2)
+#define EFFECTIVE_SAMPLE_RATE          (SAMPLE_RATE_F*0.5f)
+#define WINDOW_TIME                    ((double)FFT_WINDOW_SIZE/(double)EFFECTIVE_SAMPLE_RATE)
+#define FFT_HISTORICAL_SMOOTHING_DUR   2.0f
+#define MIN_DECIBELS                   (-100.0f) // https://developer.mozilla.org/en-US/docs/Web/API/AnalyserNode/minDecibels
+#define MAX_DECIBELS                   (-30.0f)  // https://developer.mozilla.org/en-US/docs/Web/API/AnalyserNode/maxDecibels
+#define INVERSE_DECIBEL_RANGE          (1.0f/(MAX_DECIBELS - MIN_DECIBELS))
+#define DB_TO_LINEAR_SCALE             (20.0f/2.302585092994046f)
+#define SMOOTHING_TIME_CONSTANT        0.8f // https://developer.mozilla.org/en-US/docs/Web/API/AnalyserNode/smoothingTimeConstant
+#define TEXTURE_HEIGHT                 1
+#define FFT_ROW                        0
+#define UNUSED_CHANNEL                 0.0f
+
+typedef struct FFTComplex { float real, imaginary; } FFTComplex;
+
+typedef struct FFTData {
+    FFTComplex *spectrum;
+    FFTComplex *workBuffer;
+    float *prevMagnitudes;
+    float (*fftHistory)[BUFFER_SIZE];
+    int fftHistoryLen;
+    int historyPos;
+    double lastFftTime;
+    float tapbackPos;
+} FFTData;
+
+static void CaptureFrame(FFTData *fftData, const float *audioSamples);
+static void RenderFrame(const FFTData *fftData, Image *fftImage);
+static void CooleyTukeyFFTSlow(FFTComplex *spectrum, int n);
+
+//------------------------------------------------------------------------------------
+// Program main entry point
+//------------------------------------------------------------------------------------
+int main(void)
+{
+    // Initialization
+    //-----------------------------------------------------------------------------------     ---
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [audio] example - fft spectrum visualizer");
+
+    Image fftImage = GenImageColor(BUFFER_SIZE, TEXTURE_HEIGHT, WHITE);
+    Texture2D fftTexture = LoadTextureFromImage(fftImage);
+    RenderTexture2D bufferA = LoadRenderTexture(screenWidth, screenHeight);
+    Vector2 iResolution = { (float)screenWidth, (float)screenHeight };
+
+    Shader shader = LoadShader(NULL, "resources/fft.glsl");
+    int iResolutionLocation = GetShaderLocation(shader, "iResolution");
+    int iChannel0Location = GetShaderLocation(shader, "iChannel0");
+    SetShaderValue(shader, iResolutionLocation, &iResolution, SHADER_UNIFORM_VEC2);
+    SetShaderValueTexture(shader, iChannel0Location, fftTexture);
+
+    InitAudioDevice();
+    SetAudioStreamBufferSizeDefault(AUDIO_STREAM_RING_BUFFER_SIZE);
+
+    Wave wav = LoadWave("resources/country.mp3");
+    WaveFormat(&wav, SAMPLE_RATE, PER_SAMPLE_BIT_DEPTH, MONO);
+
+    AudioStream audioStream = LoadAudioStream(SAMPLE_RATE, PER_SAMPLE_BIT_DEPTH, MONO);
+    PlayAudioStream(audioStream);
+
+    int fftHistoryLen = (int)ceilf(FFT_HISTORICAL_SMOOTHING_DUR/WINDOW_TIME) + 1;
+
+    FFTData fft = {
+        .spectrum = malloc(sizeof(FFTComplex)*FFT_WINDOW_SIZE),
+        .workBuffer = malloc(sizeof(FFTComplex)*FFT_WINDOW_SIZE),
+        .prevMagnitudes = calloc(BUFFER_SIZE, sizeof(float)),
+        .fftHistory = calloc(fftHistoryLen, sizeof(float[BUFFER_SIZE])),
+        .fftHistoryLen = fftHistoryLen,
+        .historyPos = 0,
+        .lastFftTime = 0.0,
+        .tapbackPos = 0.01f
+    };
+
+    size_t wavCursor = 0;
+    const short *wavPCM16 = wav.data;
+
+    short chunkSamples[AUDIO_STREAM_RING_BUFFER_SIZE] = { 0 };
+    float audioSamples[FFT_WINDOW_SIZE] = { 0 };
+
+    SetTargetFPS(60);
+    //----------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        while (IsAudioStreamProcessed(audioStream))
+        {
+            for (int i = 0; i < AUDIO_STREAM_RING_BUFFER_SIZE; i++)
+            {
+                int left = (wav.channels == 2)? wavPCM16[wavCursor*2 + 0] : wavPCM16[wavCursor];
+                int right = (wav.channels == 2)? wavPCM16[wavCursor*2 + 1] : left;
+                chunkSamples[i] = (short)((left + right)/2);
+
+                if (++wavCursor >= wav.frameCount)
+                    wavCursor = 0;
+
+            }
+
+            UpdateAudioStream(audioStream, chunkSamples, AUDIO_STREAM_RING_BUFFER_SIZE);
+
+            for (int i = 0; i < FFT_WINDOW_SIZE; i++)
+                audioSamples[i] = (chunkSamples[i*2] + chunkSamples[i*2 + 1])*0.5f/32767.0f;
+        }
+
+        CaptureFrame(&fft, audioSamples);
+        RenderFrame(&fft, &fftImage);
+        UpdateTexture(fftTexture, fftImage.data);
+        //------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+            ClearBackground(BLACK);
+            BeginShaderMode(shader);
+                SetShaderValueTexture(shader, iChannel0Location, fftTexture);
+                DrawTextureRec(bufferA.texture,
+                    (Rectangle){ 0, 0, (float)screenWidth, (float)-screenHeight },
+                    (Vector2){ 0, 0 },
+                    WHITE);
+            EndShaderMode();
+        EndDrawing();
+        //------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    UnloadShader(shader);
+    UnloadRenderTexture(bufferA);
+    UnloadTexture(fftTexture);
+    UnloadImage(fftImage);
+    UnloadAudioStream(audioStream);
+    UnloadWave(wav);
+    CloseAudioDevice();
+
+    free(fft.spectrum);
+    free(fft.workBuffer);
+    free(fft.prevMagnitudes);
+    free(fft.fftHistory);
+
+    CloseWindow();        // Close window and OpenGL context
+    //----------------------------------------------------------------------------------
+
+    return 0;
+}
+
+// Cooley–Tukey FFT https://en.wikipedia.org/wiki/Cooley%E2%80%93Tukey_FFT_algorithm#Data_reordering,_bit_reversal,_and_in-place_algorithms
+static void CooleyTukeyFFTSlow(FFTComplex *spectrum, int n)
+{
+    int j = 0;
+    for (int i = 1; i < n - 1; i++)
+    {
+        int bit = n >> 1;
+        while (j >= bit)
+        {
+            j -= bit;
+            bit >>= 1;
+        }
+        j += bit;
+        if (i < j)
+        {
+            FFTComplex temp = spectrum[i];
+            spectrum[i] = spectrum[j];
+            spectrum[j] = temp;
+        }
+    }
+
+    for (int len = 2; len <= n; len <<= 1)
+    {
+        float angle = -2.0f*PI/len;
+        FFTComplex twiddleUnit = { cosf(angle), sinf(angle) };
+        for (int i = 0; i < n; i += len)
+        {
+            FFTComplex twiddleCurrent = { 1.0f, 0.0f };
+            for (int j = 0; j < len/2; j++)
+            {
+                FFTComplex even = spectrum[i + j];
+                FFTComplex odd = spectrum[i + j + len/2];
+                FFTComplex twiddledOdd = {
+                    odd.real*twiddleCurrent.real - odd.imaginary*twiddleCurrent.imaginary,
+                    odd.real*twiddleCurrent.imaginary + odd.imaginary*twiddleCurrent.real
+                };
+
+                spectrum[i + j].real = even.real + twiddledOdd.real;
+                spectrum[i + j].imaginary = even.imaginary + twiddledOdd.imaginary;
+                spectrum[i + j + len/2].real = even.real - twiddledOdd.real;
+                spectrum[i + j + len/2].imaginary = even.imaginary - twiddledOdd.imaginary;
+
+                float twiddleRealNext = twiddleCurrent.real*twiddleUnit.real - twiddleCurrent.imaginary*twiddleUnit.imaginary;
+                twiddleCurrent.imaginary = twiddleCurrent.real*twiddleUnit.imaginary + twiddleCurrent.imaginary*twiddleUnit.real;
+                twiddleCurrent.real = twiddleRealNext;
+            }
+        }
+    }
+}
+
+static void CaptureFrame(FFTData *fftData, const float *audioSamples)
+{
+    for (int i = 0; i < FFT_WINDOW_SIZE; i++)
+    {
+        float x = (2.0f*PI*i)/(FFT_WINDOW_SIZE - 1.0f);
+        float blackmanWeight  = 0.42f - 0.5f*cosf(x) + 0.08f*cosf(2.0f*x); // https://en.wikipedia.org/wiki/Window_function#Blackman_window
+        fftData->workBuffer[i].real = audioSamples[i]*blackmanWeight;
+        fftData->workBuffer[i].imaginary = 0.0f;
+    }
+
+    CooleyTukeyFFTSlow(fftData->workBuffer, FFT_WINDOW_SIZE);
+    memcpy(fftData->spectrum, fftData->workBuffer, sizeof(FFTComplex)*FFT_WINDOW_SIZE);
+
+    float smoothedSpectrum[BUFFER_SIZE];
+
+    for (int bin = 0; bin < BUFFER_SIZE; bin++)
+    {
+        float re = fftData->workBuffer[bin].real;
+        float im = fftData->workBuffer[bin].imaginary;
+        float linearMagnitude = sqrtf(re*re + im*im)/FFT_WINDOW_SIZE;
+
+        float smoothedMagnitude = SMOOTHING_TIME_CONSTANT*fftData->prevMagnitudes[bin] + (1.0f - SMOOTHING_TIME_CONSTANT)*linearMagnitude;
+        fftData->prevMagnitudes[bin] = smoothedMagnitude;
+
+        float db = logf(fmaxf(smoothedMagnitude, 1e-40f))*DB_TO_LINEAR_SCALE;
+        float normalized = (db - MIN_DECIBELS)*INVERSE_DECIBEL_RANGE;
+        smoothedSpectrum[bin] = Clamp(normalized, 0.0f, 1.0f);
+    }
+
+    fftData->lastFftTime = GetTime();
+    memcpy(fftData->fftHistory[fftData->historyPos], smoothedSpectrum, sizeof(smoothedSpectrum));
+    fftData->historyPos = (fftData->historyPos + 1) % fftData->fftHistoryLen;
+}
+
+static void RenderFrame(const FFTData *fftData, Image *fftImage)
+{
+    double framesSinceTapback = floor(fftData->tapbackPos/WINDOW_TIME);
+    framesSinceTapback = Clamp(framesSinceTapback, 0.0, fftData->fftHistoryLen - 1);
+
+    int historyPosition = (fftData->historyPos - 1 - (int)framesSinceTapback) % fftData->fftHistoryLen;
+    if (historyPosition < 0)
+        historyPosition += fftData->fftHistoryLen;
+
+    const float *amplitude = fftData->fftHistory[historyPosition];
+    for (int bin = 0; bin < BUFFER_SIZE; bin++) {
+        ImageDrawPixel(fftImage, bin, FFT_ROW, ColorFromNormalized((Vector4){ amplitude[bin], UNUSED_CHANNEL, UNUSED_CHANNEL, UNUSED_CHANNEL }));
+    }
+}

examples/audio/resources/fft.glsl

@@ -0,0 +1,32 @@
+#version 330
+
+in vec2 fragTexCoord;
+in vec4 fragColor;
+
+out vec4 finalColor;
+
+uniform vec2 iResolution;
+uniform sampler2D iChannel0;
+
+const vec4  BLACK = vec4(0.0, 0.0, 0.0, 1.0);
+const vec4  WHITE = vec4(1.0, 1.0, 1.0, 1.0);
+const float FFT_ROW = 0.0;
+const float NUM_OF_BINS = 512.0;
+
+void main() {
+    vec2  fragCoord = fragTexCoord*iResolution;
+    float cell_width = iResolution.x/NUM_OF_BINS;
+    float bin_index = floor(fragCoord.x/cell_width);
+    float local_x = mod(fragCoord.x, cell_width);
+    float bar_width  = cell_width - 1.0;
+    vec4  color = BLACK;
+    if (local_x <= bar_width) {
+        float sample_x = (bin_index + 0.5)/NUM_OF_BINS;
+        vec2  sample_coord = vec2(sample_x, FFT_ROW);
+        float amplitude = texture(iChannel0, sample_coord).r; // only filled the red channel, all channels left open for alternative use
+        if (fragTexCoord.y < amplitude) {
+            color = WHITE;
+        }
+    }
+    finalColor = color;
+}

examples/core/core_input_gamepad.c

@@ -196,7 +196,6 @@ int main(void)
                 }
                 else
                 {
-
                     // Draw background: generic
                     DrawRectangleRounded((Rectangle){ 175, 110, 460, 220}, 0.3f, 16, DARKGRAY);
 
@@ -269,7 +268,6 @@ int main(void)
             else
             {
                 DrawText(TextFormat("GP%d: NOT DETECTED", gamepad), 10, 10, 10, GRAY);
-
                 DrawTexture(texXboxPad, 0, 0, LIGHTGRAY);
             }
 

examples/core/core_window_should_close.c

@@ -18,7 +18,7 @@
 //------------------------------------------------------------------------------------
 // Program main entry point
 //------------------------------------------------------------------------------------
-int main()
+int main(void)
 {
     // Initialization
     //--------------------------------------------------------------------------------------

examples/models/models_directional_billboard.c

@@ -0,0 +1,116 @@
+/*******************************************************************************************
+*
+*   raylib [models] example - directional billboard
+*
+*   Example complexity rating: [★★☆☆] 2/4
+*
+*   Example originally created with raylib 5.6-dev, last time updated with raylib 5.6
+*
+*   Example contributed by Robin (@RobinsAviary) and reviewed by Ramon Santamaria (@raysan5)
+*
+*   Example 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) 2025-2025 Robin (@RobinsAviary)
+*   Killbot art by patvanmackelberg https://opengameart.org/content/killbot-8-directional under CC0
+*
+********************************************************************************************/
+
+#include "raylib.h"
+#include "raymath.h"
+#include <stdlib.h>
+
+//------------------------------------------------------------------------------------
+// Program main entry point
+//------------------------------------------------------------------------------------
+int main(void)
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [models] example - directional billboard");
+
+    // Set up the camera
+    Camera camera = { 0 };
+    camera.position = (Vector3){ 2.0f, 1.0f, 2.0f }; // Starting position
+    camera.target = (Vector3){ 0.0f, 0.5f, 0.0f };  // Target position
+    camera.up = (Vector3){ 0.0f, 1.0f, 0.0f }; // Up vector
+    camera.fovy = 45.0f; // FOV
+    camera.projection = CAMERA_PERSPECTIVE; // Projection type (Standard 3D perspective)
+
+    // Load billboard texture
+    Texture skillbot = LoadTexture("resources/skillbot.png");
+
+    // Timer to update animation
+    float anim_timer = 0.0f;
+    // Animation frame
+    unsigned int anim = 0;
+
+    SetTargetFPS(60);
+    //--------------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        UpdateCamera(&camera, CAMERA_ORBITAL);
+
+        // Update timer with delta time
+        anim_timer += GetFrameTime();
+
+        // Update frame index after a certain amount of time (half a second)
+        if (anim_timer > 0.5f) 
+        {
+            anim_timer = 0.0f;
+            anim += 1;
+        }
+
+        // Reset frame index to zero on overflow
+        if (anim >= 4) anim = 0;
+
+        // Find the current direction frame based on the camera position to the billboard object
+        float dir = (float)floor(((Vector2Angle((Vector2){ 2.0f, 0.0f }, (Vector2){ camera.position.x, camera.position.z })/PI)*4.0f) + 0.25f);
+
+        // Correct frame index if angle is negative
+        if (dir < 0.0f)
+        {
+            dir = 8.0f - (float)abs((int)dir);
+        }
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+        ClearBackground(RAYWHITE);
+
+        BeginMode3D(camera);
+
+            DrawGrid(10, 1.0f);
+
+            // Draw billboard pointing straight up to the sky, rotated relative to the camera and offset from the bottom
+            DrawBillboardPro(camera, skillbot, (Rectangle){ 0.0f + (anim*24.0f), 0.0f + (dir*24.0f), 24.0f, 24.0f }, Vector3Zero(), (Vector3){ 0.0f, 1.0f, 0.0f }, Vector2One(), (Vector2){ 0.5f, 0.0f }, 0, WHITE);
+
+        EndMode3D();
+
+        // Render various variables for reference
+        DrawText(TextFormat("animation: %d", anim), 10, 10, 20, DARKGRAY);
+        DrawText(TextFormat("direction frame: %.0f", dir), 10, 40, 20, DARKGRAY);
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    // Unload billboard texture
+    UnloadTexture(skillbot);
+
+    CloseWindow();        // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}

examples/models/models_point_rendering.c

@@ -32,7 +32,7 @@ static Mesh GenMeshPoints(int numPoints);
 //------------------------------------------------------------------------------------
 // Program main entry point
 //------------------------------------------------------------------------------------
-int main()
+int main(void)
 {
     // Initialization
     //--------------------------------------------------------------------------------------

examples/models/models_waving_cubes.c

@@ -22,7 +22,7 @@
 //------------------------------------------------------------------------------------
 // Program main entry point
 //------------------------------------------------------------------------------------
-int main()
+int main(void)
 {
     // Initialization
     //--------------------------------------------------------------------------------------

examples/others/web_basic_window.c

@@ -36,7 +36,7 @@ void UpdateDrawFrame(void);     // Update and Draw one frame
 //----------------------------------------------------------------------------------
 // Program main entry point
 //----------------------------------------------------------------------------------
-int main()
+int main(void)
 {
     // Initialization
     //--------------------------------------------------------------------------------------

examples/shaders/shaders_basic_pbr.c

@@ -77,7 +77,7 @@ static void UpdateLight(Shader shader, Light light);
 //----------------------------------------------------------------------------------
 // Program main entry point
 //----------------------------------------------------------------------------------
-int main()
+int main(void)
 {
     // Initialization
     //--------------------------------------------------------------------------------------

examples/textures/resources/LICENSE.md

@@ -8,7 +8,7 @@
 | explosion.png        | [Unity Labs Paris](https://blogs.unity3d.com/2016/11/28/free-vfx-image-sequences-flipbooks/) | [CC0](https://creativecommons.org/publicdomain/zero/1.0/) |
 | parrots.png          | [Kodak set](http://r0k.us/graphics/kodak/)  | ❔       | Original name: `kodim23.png`
 | cat.png              | ❔         | ❔     | - |
-| wabbit_alpha.png     | ❔         | ❔     | - |
+| raybunny.png         | [VoidSrc*](https://x.com/voidsrc)         | [CC0](https://creativecommons.org/publicdomain/zero/1.0/)      | - |
 | custom_jupiter_crash.png | [Brian Kent (AEnigma)](https://www.dafont.com/es/aenigma.d188) | [Freeware](https://www.dafont.com/es/jupiter-crash.font) | Atlas created by [@raysan5](https://github.com/raysan5) |
 | KAISG.ttf            | [Dieter Steffmann](http://www.steffmann.de/wordpress/) | [Freeware](https://www.1001fonts.com/users/steffmann/) | [Kaiserzeit Gotisch](https://www.dafont.com/es/kaiserzeit-gotisch.font) font |
 | fudesumi.png         | [Eiden Marsal](https://www.artstation.com/marshall_z)  | [CC-BY-NC](https://creativecommons.org/licenses/by-nc/4.0/)  | - |

examples/textures/textures_bunnymark.c

@@ -45,7 +45,7 @@ int main(void)
     InitWindow(screenWidth, screenHeight, "raylib [textures] example - bunnymark");
 
     // Load bunny texture
-    Texture2D texBunny = LoadTexture("resources/wabbit_alpha.png");
+    Texture2D texBunny = LoadTexture("resources/raybunny.png");
 
     Bunny *bunnies = (Bunny *)malloc(MAX_BUNNIES*sizeof(Bunny));    // Bunnies array
 

examples/textures/textures_textured_curve.c

@@ -49,7 +49,7 @@ static void DrawTexturedCurve(void);
 //------------------------------------------------------------------------------------
 // Program main entry point
 //------------------------------------------------------------------------------------
-int main()
+int main(void)
 {
     // Initialization
     //--------------------------------------------------------------------------------------

tools/rexm/rexm.c

@@ -121,6 +121,7 @@ typedef enum {
     OP_VALIDATE = 5,        // Validate examples, using [examples_list.txt] as main source by default
     OP_UPDATE   = 6,        // Validate and update required examples (as far as possible)
     OP_BUILD    = 7,        // Build example for desktop and web, copy web output
+    OP_TEST     = 8,        // Test example: check output LOG WARNINGS
 } rlExampleOperation;
 
 static const char *exCategories[REXM_MAX_EXAMPLE_CATEGORIES] = { "core", "shapes", "textures", "text", "models", "shaders", "audio", "others" };
@@ -404,7 +405,7 @@ int main(int argc, char *argv[])
                     char *exColInfo = LoadFileText(exCollectionFilePath);
                     if (TextFindIndex(exColInfo, argv[2]) != -1) // Example in the collection
                     {
-                        strcpy(exName, argv[2]); // Register example name for removal
+                        strcpy(exName, argv[2]); // Register example name
                         strncpy(exCategory, exName, TextFindIndex(exName, "_"));
                         opCode = OP_BUILD;
                     }
@@ -413,6 +414,36 @@ int main(int argc, char *argv[])
                 }
             }
         }
+        else if (strcmp(argv[1], "test") == 0)
+        {
+            // Build and test example for PLATFORM_DESKTOP
+            // NOTE: Build outputs to default directory, usually where the .c file is located,
+            // to avoid issues with copying resources (at least on Desktop)
+            if (argc == 2) LOG("WARNING: No example name provided to test\n");
+            else if (argc > 3) LOG("WARNING: Too many arguments provided\n");
+            else
+            {
+                // Support building not only individual examples but categories and "ALL"
+                if ((strcmp(argv[2], "ALL") == 0) || TextInList(argv[2], exCategories, REXM_MAX_EXAMPLE_CATEGORIES))
+                {
+                    // Category/ALL rebuilt requested
+                    strcpy(exRebuildRequested, argv[2]);
+                }
+                else
+                {
+                    // Verify example exists in collection to be removed
+                    char *exColInfo = LoadFileText(exCollectionFilePath);
+                    if (TextFindIndex(exColInfo, argv[2]) != -1) // Example in the collection
+                    {
+                        strcpy(exName, argv[2]); // Register example name
+                        strncpy(exCategory, exName, TextFindIndex(exName, "_"));
+                        opCode = OP_TEST;
+                    }
+                    else LOG("WARNING: TEST: Example requested not available in the collection\n");
+                    UnloadFileText(exColInfo);
+                }
+            }
+        }
 
         // Process command line options arguments
         for (int i = 1; i < argc; i++)
@@ -1487,6 +1518,94 @@ int main(int argc, char *argv[])
             UnloadExamplesData(exCollection);
             //------------------------------------------------------------------------------------------------
 
+        } break;
+        case OP_TEST:
+        {
+            LOG("INFO: Command requested: TEST\n");
+            LOG("INFO: Example to be built and tested: %s\n", exName);
+
+            // Steps to follow
+            // STEP 1: Load example.c and replace required code to inject basic testing code: frames to run
+            //    OPTION 1: Code injection required multiple changes for testing but it does not require raylib changes!
+            //    OPTION 2: Support testing on raylib side: Args processing and events injection: SUPPORT_AUTOMATD_TESTING_SYSTEM, EVENTS_TESTING_MODE
+            // STEP 2: Build example (PLATFORM_DESKTOP)
+            // STEP 3: Run example with arguments: --frames 2 > <example>.out.log
+            // STEP 4: Load <example>.out.log and check "WARNING:" messages -> Some could maybe be ignored
+            // STEP 5: Generate report with results
+
+            // STEP 1: Load example and inject required code
+            //    PROBLEM: As we need to modify the example source code for building, we need to keep a copy or something
+            //      WARNING: If we make a copy and something fails, it could not be restored at the end
+            //    PROBLEM: Trying to build a copy won't work because Makefile is setup to look for specific example on specific path -> No output dir config
+            //    IDEA: Create directory for testing data -> It implies moving files and set working dir...
+            //    SOLUTION: Make a copy of original file -> Modify original -> Build -> Rename to <example>.test.exe
+            FileCopy(TextFormat("%s/%s/%s.c", exBasePath, exCategory, exName), 
+                TextFormat("%s/%s/%s.original.c", exBasePath, exCategory, exName));
+            char *srcText = LoadFileText(TextFormat("%s/%s/%s.c", exBasePath, exCategory, exName));
+
+            static const char *mainReplaceText =
+                "#include <string.h>\n"
+                "#include <stdlib.h>\n"
+                "int main(int argc, char *argv[])\n{\n"
+                "    int requestedTestFrames = 0;\n"
+                "    int testFramesCount = 0;\n"
+                "    if ((argc > 1) && (argc == 3) && (strcmp(argv[1], \"--frames\") != 0)) requestedTestFrames = atoi(argv[2]);\n";
+
+            char *srcTextUpdated[3] = { 0 };
+            srcTextUpdated[0] = TextReplace(srcText, "int main(void)\n{", mainReplaceText);
+            srcTextUpdated[1] = TextReplace(srcTextUpdated[0], "WindowShouldClose()", "WindowShouldClose() && (testFramesCount < requestedTestFrames)");
+            srcTextUpdated[2] = TextReplace(srcTextUpdated[1], "EndDrawing();", "EndDrawing(); testFramesCount++;");
+            UnloadFileText(srcText);
+
+            SaveFileText(TextFormat("%s/%s/%s.c", exBasePath, exCategory, exName), srcTextUpdated[2]);
+            for (int i = 0; i < 3; i++) { MemFree(srcTextUpdated[i]); srcTextUpdated[i] = NULL; }
+
+            // STEP 2: Build example for DESKTOP platform
+#if defined(_WIN32)
+            // Set required environment variables
+            //putenv(TextFormat("RAYLIB_DIR=%s\\..", exBasePath));
+            _putenv("PATH=%PATH%;C:\\raylib\\w64devkit\\bin");
+            //putenv("MAKE=mingw32-make");
+            //ChangeDirectory(exBasePath);
+#endif
+            // Build example for PLATFORM_DESKTOP
+#if defined(_WIN32)
+            LOG("INFO: [%s] Building example for PLATFORM_DESKTOP (Host: Win32)\n", exName);
+            system(TextFormat("mingw32-make -C %s %s/%s PLATFORM=PLATFORM_DESKTOP -B", exBasePath, exCategory, exName));
+#else
+            LOG("INFO: [%s] Building example for PLATFORM_DESKTOP (Host: POSIX)\n", exName);
+            system(TextFormat("make -C %s %s/%s PLATFORM=PLATFORM_DESKTOP -B", exBasePath, exCategory, exName));
+#endif
+            // Restore original source code before continue
+            FileCopy(TextFormat("%s/%s/%s.original.c", exBasePath, exCategory, exName), 
+                TextFormat("%s/%s/%s.c", exBasePath, exCategory, exName));
+            FileRemove(TextFormat("%s/%s/%s.original.c", exBasePath, exCategory, exName));
+
+            // STEP 3: Run example with required arguments
+            ChangeDirectory(TextFormat("%s/%s", exBasePath, exCategory));
+            system(TextFormat("%s --frames 2 > %s.log", exName, exName));
+
+            // STEP 4: Load and validate log -> WARNINGS
+            char *exTestLog = LoadFileText(TextFormat("%s/%s/%s.log", exBasePath, exCategory, exName));
+            int exTestLogLinesCount = 0;
+            char **exTestLogLines = LoadTextLines(exTestLog, &exTestLogLinesCount);
+            UnloadFileText(exTestLog);
+
+            int issueCounter = false;
+            for (int i = 0; i < exTestLogLinesCount; i++)
+            {
+                if (TextFindIndex(exTestLogLines[i], "WARNING") >= 0)
+                {
+                    LOG("TEST: [%s] %s\n", exName, exTestLogLines[i]);
+                    issueCounter++;
+                }
+            }
+
+            UnloadTextLines(exTestLogLines, exTestLogLinesCount);
+
+            // STEP 5: Generate auto-test report
+            //if (issueCounter > 0)
+
         } break;
         default:    // Help
         {
@@ -2155,11 +2274,13 @@ static char **ScanExampleResources(const char *filePath, int *resPathCount)
             int functionIndex02 = TextFindIndex(ptr - 10, "TraceLog");          // Check TraceLog()
             int functionIndex03 = TextFindIndex(ptr - 40, "TakeScreenshot");    // Check TakeScreenshot()
             int functionIndex04 = TextFindIndex(ptr - 40, "SaveFileData");      // Check SaveFileData()
+            int functionIndex05 = TextFindIndex(ptr - 40, "SaveFileText");      // Check SaveFileText()
 
             if (!((functionIndex01 != -1) && (functionIndex01 < 40)) &&  // Not found ExportImage() before ""
                 !((functionIndex02 != -1) && (functionIndex02 < 10)) &&  // Not found TraceLog() before ""
                 !((functionIndex03 != -1) && (functionIndex03 < 40)) &&  // Not found TakeScreenshot() before ""
-                !((functionIndex04 != -1) && (functionIndex04 < 40)))    // Not found SaveFileData() before ""
+                !((functionIndex04 != -1) && (functionIndex04 < 40)) &&  // Not found TakeScreenshot() before ""
+                !((functionIndex05 != -1) && (functionIndex05 < 40)))    // Not found SaveFileText() before ""
             {
                 int len = (int)(end - start);
                 if ((len > 0) && (len < REXM_MAX_RESOURCE_PATH_LEN))