git subrepo clone (merge) https://github.com/HarbourMasters/otrgui.git OTRGui

subrepo:
  subdir:   "OTRGui"
  merged:   "a6066a251"
upstream:
  origin:   "https://github.com/HarbourMasters/otrgui.git"
  branch:   "master"
  commit:   "a6066a251"
git-subrepo:
  version:  "0.4.1"
  origin:   "???"
  commit:   "???"

OTRGui/libs/raylib/examples/textures/resources/LICENSE.md

@@ -0,0 +1,18 @@
+| resource             | author      | licence | notes |
+| :------------------- | :---------: | :------ | :---- |
+| boom.wav             | [@raysan5](https://github.com/raysan5)    | [CC0](https://creativecommons.org/publicdomain/zero/1.0/)     | Made with [rFXGen](https://raylibtech.itch.io/rfxgen) |
+| buttonfx.wav         | [@raysan5](https://github.com/raysan5)    | [CC0](https://creativecommons.org/publicdomain/zero/1.0/)     | Made with [rFXGen](https://raylibtech.itch.io/rfxgen) |
+| button.png           | [@raysan5](https://github.com/raysan5)    | [CC0](https://creativecommons.org/publicdomain/zero/1.0/)     | Made with [rFXGen](https://raylibtech.itch.io/rfxgen) |
+| spark_flame.png      | [@raysan5](https://github.com/raysan5)    | [CC0](https://creativecommons.org/publicdomain/zero/1.0/)     | Made with [EffectTextureMaker](https://mebiusbox.github.io/contents/EffectTextureMaker/) |
+| ninepatch_button.png | [@overdev](https://github.com/overdev)    | ❔     |
+| 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     | ❔         | ❔     | - |
+| 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/)  | - |
+| scarfy.png           | [Eiden Marsal](https://www.artstation.com/marshall_z) | [CC-BY-NC](https://creativecommons.org/licenses/by-nc/4.0/legalcode) | - |
+| cyberpunk_street_background.png | [Luis Zuno](http://ansimuz.com/site/) | [CC-BY-3.0](http://creativecommons.org/licenses/by/3.0/) | [Cyberpunk Street Environment](https://ansimuz.itch.io/cyberpunk-street-environment) |
+| cyberpunk_street_foreground.png | [Luis Zuno](http://ansimuz.com/site/) | [CC-BY-3.0](http://creativecommons.org/licenses/by/3.0/) | [Cyberpunk Street Environment](https://ansimuz.itch.io/cyberpunk-street-environment) |
+| cyberpunk_street_midground.png  | [Luis Zuno](http://ansimuz.com/site/) | [CC-BY-3.0](http://creativecommons.org/licenses/by/3.0/) | [Cyberpunk Street Environment](https://ansimuz.itch.io/cyberpunk-street-environment) |

OTRGui/libs/raylib/examples/textures/textures_background_scrolling.c

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+/*******************************************************************************************
+*
+*   raylib [textures] example - Background scrolling
+*
+*   This example has been created using raylib 2.0 (www.raylib.com)
+*   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
+*
+*   Copyright (c) 2019 Ramon Santamaria (@raysan5)
+*
+********************************************************************************************/
+
+#include "raylib.h"
+
+int main(void)
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [textures] example - background scrolling");
+
+    // NOTE: Be careful, background width must be equal or bigger than screen width
+    // if not, texture should be draw more than two times for scrolling effect
+    Texture2D background = LoadTexture("resources/cyberpunk_street_background.png");
+    Texture2D midground = LoadTexture("resources/cyberpunk_street_midground.png");
+    Texture2D foreground = LoadTexture("resources/cyberpunk_street_foreground.png");
+
+    float scrollingBack = 0.0f;
+    float scrollingMid = 0.0f;
+    float scrollingFore = 0.0f;
+
+    SetTargetFPS(60);               // Set our game to run at 60 frames-per-second
+    //--------------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        scrollingBack -= 0.1f;
+        scrollingMid -= 0.5f;
+        scrollingFore -= 1.0f;
+
+        // NOTE: Texture is scaled twice its size, so it sould be considered on scrolling
+        if (scrollingBack <= -background.width*2) scrollingBack = 0;
+        if (scrollingMid <= -midground.width*2) scrollingMid = 0;
+        if (scrollingFore <= -foreground.width*2) scrollingFore = 0;
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(GetColor(0x052c46ff));
+
+            // Draw background image twice
+            // NOTE: Texture is scaled twice its size
+            DrawTextureEx(background, (Vector2){ scrollingBack, 20 }, 0.0f, 2.0f, WHITE);
+            DrawTextureEx(background, (Vector2){ background.width*2 + scrollingBack, 20 }, 0.0f, 2.0f, WHITE);
+
+            // Draw midground image twice
+            DrawTextureEx(midground, (Vector2){ scrollingMid, 20 }, 0.0f, 2.0f, WHITE);
+            DrawTextureEx(midground, (Vector2){ midground.width*2 + scrollingMid, 20 }, 0.0f, 2.0f, WHITE);
+
+            // Draw foreground image twice
+            DrawTextureEx(foreground, (Vector2){ scrollingFore, 70 }, 0.0f, 2.0f, WHITE);
+            DrawTextureEx(foreground, (Vector2){ foreground.width*2 + scrollingFore, 70 }, 0.0f, 2.0f, WHITE);
+
+            DrawText("BACKGROUND SCROLLING & PARALLAX", 10, 10, 20, RED);
+            DrawText("(c) Cyberpunk Street Environment by Luis Zuno (@ansimuz)", screenWidth - 330, screenHeight - 20, 10, RAYWHITE);
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    UnloadTexture(background);  // Unload background texture
+    UnloadTexture(midground);   // Unload midground texture
+    UnloadTexture(foreground);  // Unload foreground texture
+
+    CloseWindow();              // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}

OTRGui/libs/raylib/examples/textures/textures_blend_modes.c

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+/*******************************************************************************************
+*
+*   raylib [textures] example - blend modes
+*
+*   NOTE: Images are loaded in CPU memory (RAM); textures are loaded in GPU memory (VRAM)
+*
+*   This example has been created using raylib 3.5 (www.raylib.com)
+*   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
+*
+*   Example contributed by Karlo Licudine (@accidentalrebel) and reviewed by Ramon Santamaria (@raysan5)
+*
+*   Copyright (c) 2020 Karlo Licudine (@accidentalrebel)
+*
+********************************************************************************************/
+
+#include "raylib.h"
+
+int main(void)
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [textures] example - blend modes");
+
+    // NOTE: Textures MUST be loaded after Window initialization (OpenGL context is required)
+    Image bgImage = LoadImage("resources/cyberpunk_street_background.png");     // Loaded in CPU memory (RAM)
+    Texture2D bgTexture = LoadTextureFromImage(bgImage);          // Image converted to texture, GPU memory (VRAM)
+
+    Image fgImage = LoadImage("resources/cyberpunk_street_foreground.png");     // Loaded in CPU memory (RAM)
+    Texture2D fgTexture = LoadTextureFromImage(fgImage);          // Image converted to texture, GPU memory (VRAM)
+
+    // Once image has been converted to texture and uploaded to VRAM, it can be unloaded from RAM
+    UnloadImage(bgImage);
+    UnloadImage(fgImage);
+
+    const int blendCountMax = 4;
+    BlendMode blendMode = 0;
+
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        if (IsKeyPressed(KEY_SPACE))
+        {
+            if (blendMode >= (blendCountMax - 1)) blendMode = 0;
+            else blendMode++;
+        }
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+
+            DrawTexture(bgTexture, screenWidth/2 - bgTexture.width/2, screenHeight/2 - bgTexture.height/2, WHITE);
+
+            // Apply the blend mode and then draw the foreground texture
+            BeginBlendMode(blendMode);
+                DrawTexture(fgTexture, screenWidth/2 - fgTexture.width/2, screenHeight/2 - fgTexture.height/2, WHITE);
+            EndBlendMode();
+
+            // Draw the texts
+            DrawText("Press SPACE to change blend modes.", 310, 350, 10, GRAY);
+
+            switch (blendMode)
+            {
+                case BLEND_ALPHA: DrawText("Current: BLEND_ALPHA", (screenWidth / 2) - 60, 370, 10, GRAY); break;
+                case BLEND_ADDITIVE: DrawText("Current: BLEND_ADDITIVE", (screenWidth / 2) - 60, 370, 10, GRAY); break;
+                case BLEND_MULTIPLIED: DrawText("Current: BLEND_MULTIPLIED", (screenWidth / 2) - 60, 370, 10, GRAY); break;
+                case BLEND_ADD_COLORS: DrawText("Current: BLEND_ADD_COLORS", (screenWidth / 2) - 60, 370, 10, GRAY); break;
+                default: break;
+            }
+
+            DrawText("(c) Cyberpunk Street Environment by Luis Zuno (@ansimuz)", screenWidth - 330, screenHeight - 20, 10, GRAY);
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    UnloadTexture(fgTexture); // Unload foreground texture
+    UnloadTexture(bgTexture); // Unload background texture
+
+    CloseWindow();            // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}

OTRGui/libs/raylib/examples/textures/textures_bunnymark.c

@@ -0,0 +1,120 @@
+/*******************************************************************************************
+*
+*   raylib [textures] example - Bunnymark
+*
+*   This example has been created using raylib 1.6 (www.raylib.com)
+*   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
+*
+*   Copyright (c) 2014-2019 Ramon Santamaria (@raysan5)
+*
+********************************************************************************************/
+
+#include "raylib.h"
+
+#include <stdlib.h>                 // Required for: malloc(), free()
+
+#define MAX_BUNNIES        50000    // 50K bunnies limit
+
+// This is the maximum amount of elements (quads) per batch
+// NOTE: This value is defined in [rlgl] module and can be changed there
+#define MAX_BATCH_ELEMENTS  8192
+
+typedef struct Bunny {
+    Vector2 position;
+    Vector2 speed;
+    Color color;
+} Bunny;
+
+int main(void)
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [textures] example - bunnymark");
+
+    // Load bunny texture
+    Texture2D texBunny = LoadTexture("resources/wabbit_alpha.png");
+
+    Bunny *bunnies = (Bunny *)malloc(MAX_BUNNIES*sizeof(Bunny));    // Bunnies array
+
+    int bunniesCount = 0;           // Bunnies counter
+
+    SetTargetFPS(60);               // Set our game to run at 60 frames-per-second
+    //--------------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        if (IsMouseButtonDown(MOUSE_BUTTON_LEFT))
+        {
+            // Create more bunnies
+            for (int i = 0; i < 100; i++)
+            {
+                if (bunniesCount < MAX_BUNNIES)
+                {
+                    bunnies[bunniesCount].position = GetMousePosition();
+                    bunnies[bunniesCount].speed.x = (float)GetRandomValue(-250, 250)/60.0f;
+                    bunnies[bunniesCount].speed.y = (float)GetRandomValue(-250, 250)/60.0f;
+                    bunnies[bunniesCount].color = (Color){ GetRandomValue(50, 240),
+                                                       GetRandomValue(80, 240),
+                                                       GetRandomValue(100, 240), 255 };
+                    bunniesCount++;
+                }
+            }
+        }
+
+        // Update bunnies
+        for (int i = 0; i < bunniesCount; i++)
+        {
+            bunnies[i].position.x += bunnies[i].speed.x;
+            bunnies[i].position.y += bunnies[i].speed.y;
+
+            if (((bunnies[i].position.x + texBunny.width/2) > GetScreenWidth()) ||
+                ((bunnies[i].position.x + texBunny.width/2) < 0)) bunnies[i].speed.x *= -1;
+            if (((bunnies[i].position.y + texBunny.height/2) > GetScreenHeight()) ||
+                ((bunnies[i].position.y + texBunny.height/2 - 40) < 0)) bunnies[i].speed.y *= -1;
+        }
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+
+            for (int i = 0; i < bunniesCount; i++)
+            {
+                // NOTE: When internal batch buffer limit is reached (MAX_BATCH_ELEMENTS),
+                // a draw call is launched and buffer starts being filled again;
+                // before issuing a draw call, updated vertex data from internal CPU buffer is send to GPU...
+                // Process of sending data is costly and it could happen that GPU data has not been completely
+                // processed for drawing while new data is tried to be sent (updating current in-use buffers)
+                // it could generates a stall and consequently a frame drop, limiting the number of drawn bunnies
+                DrawTexture(texBunny, (int)bunnies[i].position.x, (int)bunnies[i].position.y, bunnies[i].color);
+            }
+
+            DrawRectangle(0, 0, screenWidth, 40, BLACK);
+            DrawText(TextFormat("bunnies: %i", bunniesCount), 120, 10, 20, GREEN);
+            DrawText(TextFormat("batched draw calls: %i", 1 + bunniesCount/MAX_BATCH_ELEMENTS), 320, 10, 20, MAROON);
+
+            DrawFPS(10, 10);
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    free(bunnies);              // Unload bunnies data array
+
+    UnloadTexture(texBunny);    // Unload bunny texture
+
+    CloseWindow();              // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}

OTRGui/libs/raylib/examples/textures/textures_draw_tiled.c

@@ -0,0 +1,165 @@
+/*******************************************************************************************
+*
+*   raylib [textures] example - Draw part of the texture tiled
+*
+*   This example has been created using raylib 3.0 (www.raylib.com)
+*   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
+*
+*   Copyright (c) 2020 Vlad Adrian (@demizdor) and Ramon Santamaria (@raysan5)
+*
+********************************************************************************************/
+#include "raylib.h"
+
+#define SIZEOF(A) (sizeof(A)/sizeof(A[0]))
+#define OPT_WIDTH       220       // Max width for the options container
+#define MARGIN_SIZE       8       // Size for the margins
+#define COLOR_SIZE       16       // Size of the color select buttons
+
+int main(int argc, char **argv)
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    int screenWidth = 800;
+    int screenHeight = 450;
+
+    SetConfigFlags(FLAG_WINDOW_RESIZABLE); // Make the window resizable
+    InitWindow(screenWidth, screenHeight, "raylib [textures] example - Draw part of a texture tiled");
+
+    // NOTE: Textures MUST be loaded after Window initialization (OpenGL context is required)
+    Texture texPattern = LoadTexture("resources/patterns.png");
+    SetTextureFilter(texPattern, TEXTURE_FILTER_TRILINEAR); // Makes the texture smoother when upscaled
+
+    // Coordinates for all patterns inside the texture
+    const Rectangle recPattern[] = {
+        (Rectangle){ 3, 3, 66, 66 },
+        (Rectangle){ 75, 3, 100, 100 },
+        (Rectangle){ 3, 75, 66, 66 },
+        (Rectangle){ 7, 156, 50, 50 },
+        (Rectangle){ 85, 106, 90, 45 },
+        (Rectangle){ 75, 154, 100, 60}
+    };
+
+    // Setup colors
+    const Color colors[] = { BLACK, MAROON, ORANGE, BLUE, PURPLE, BEIGE, LIME, RED, DARKGRAY, SKYBLUE };
+    enum { MAX_COLORS = SIZEOF(colors) };
+    Rectangle colorRec[MAX_COLORS] = { 0 };
+
+    // Calculate rectangle for each color
+    for (int i = 0, x = 0, y = 0; i < MAX_COLORS; i++)
+    {
+        colorRec[i].x = 2.0f + MARGIN_SIZE + x;
+        colorRec[i].y = 22.0f + 256.0f + MARGIN_SIZE + y;
+        colorRec[i].width = COLOR_SIZE*2.0f;
+        colorRec[i].height = (float)COLOR_SIZE;
+
+        if (i == (MAX_COLORS/2 - 1))
+        {
+            x = 0;
+            y += COLOR_SIZE + MARGIN_SIZE;
+        }
+        else x += (COLOR_SIZE*2 + MARGIN_SIZE);
+    }
+
+    int activePattern = 0, activeCol = 0;
+    float scale = 1.0f, rotation = 0.0f;
+
+    SetTargetFPS(60);
+    //---------------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        screenWidth = GetScreenWidth();
+        screenHeight = GetScreenHeight();
+
+        // Handle mouse
+        if (IsMouseButtonPressed(MOUSE_BUTTON_LEFT))
+        {
+            const Vector2 mouse = GetMousePosition();
+
+            // Check which pattern was clicked and set it as the active pattern
+            for (int i = 0; i < SIZEOF(recPattern); i++)
+            {
+                if (CheckCollisionPointRec(mouse, (Rectangle){ 2 + MARGIN_SIZE + recPattern[i].x, 40 + MARGIN_SIZE + recPattern[i].y, recPattern[i].width, recPattern[i].height }))
+                {
+                    activePattern = i;
+                    break;
+                }
+            }
+
+            // Check to see which color was clicked and set it as the active color
+            for (int i = 0; i < MAX_COLORS; ++i)
+            {
+                if (CheckCollisionPointRec(mouse, colorRec[i]))
+                {
+                    activeCol = i;
+                    break;
+                }
+            }
+        }
+
+        // Handle keys
+
+        // Change scale
+        if (IsKeyPressed(KEY_UP)) scale += 0.25f;
+        if (IsKeyPressed(KEY_DOWN)) scale -= 0.25f;
+        if (scale > 10.0f) scale = 10.0f;
+        else if ( scale <= 0.0f) scale = 0.25f;
+
+        // Change rotation
+        if (IsKeyPressed(KEY_LEFT)) rotation -= 25.0f;
+        if (IsKeyPressed(KEY_RIGHT)) rotation += 25.0f;
+
+        // Reset
+        if (IsKeyPressed(KEY_SPACE)) { rotation = 0.0f; scale = 1.0f; }
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+            ClearBackground(RAYWHITE);
+
+            // Draw the tiled area
+            DrawTextureTiled(texPattern, recPattern[activePattern], (Rectangle){(float)OPT_WIDTH+MARGIN_SIZE, (float)MARGIN_SIZE, screenWidth - OPT_WIDTH - 2.0f*MARGIN_SIZE, screenHeight - 2.0f*MARGIN_SIZE},
+                (Vector2){0.0f, 0.0f}, rotation, scale, colors[activeCol]);
+
+            // Draw options
+            DrawRectangle(MARGIN_SIZE, MARGIN_SIZE, OPT_WIDTH - MARGIN_SIZE, screenHeight - 2*MARGIN_SIZE, ColorAlpha(LIGHTGRAY, 0.5f));
+
+            DrawText("Select Pattern", 2 + MARGIN_SIZE, 30 + MARGIN_SIZE, 10, BLACK);
+            DrawTexture(texPattern, 2 + MARGIN_SIZE, 40 + MARGIN_SIZE, BLACK);
+            DrawRectangle(2 + MARGIN_SIZE + (int)recPattern[activePattern].x, 40 + MARGIN_SIZE + (int)recPattern[activePattern].y, (int)recPattern[activePattern].width, (int)recPattern[activePattern].height, ColorAlpha(DARKBLUE, 0.3f));
+
+            DrawText("Select Color", 2+MARGIN_SIZE, 10+256+MARGIN_SIZE, 10, BLACK);
+            for (int i = 0; i < MAX_COLORS; i++)
+            {
+                DrawRectangleRec(colorRec[i], colors[i]);
+                if (activeCol == i) DrawRectangleLinesEx(colorRec[i], 3, ColorAlpha(WHITE, 0.5f));
+            }
+
+            DrawText("Scale (UP/DOWN to change)", 2 + MARGIN_SIZE, 80 + 256 + MARGIN_SIZE, 10, BLACK);
+            DrawText(TextFormat("%.2fx", scale), 2 + MARGIN_SIZE, 92 + 256 + MARGIN_SIZE, 20, BLACK);
+
+            DrawText("Rotation (LEFT/RIGHT to change)", 2 + MARGIN_SIZE, 122 + 256 + MARGIN_SIZE, 10, BLACK);
+            DrawText(TextFormat("%.0f degrees", rotation), 2 + MARGIN_SIZE, 134 + 256 + MARGIN_SIZE, 20, BLACK);
+
+            DrawText("Press [SPACE] to reset", 2 + MARGIN_SIZE, 164 + 256 + MARGIN_SIZE, 10, DARKBLUE);
+
+            // Draw FPS
+            DrawText(TextFormat("%i FPS", GetFPS()), 2 + MARGIN_SIZE, 2 + MARGIN_SIZE, 20, BLACK);
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    UnloadTexture(texPattern);        // Unload texture
+
+    CloseWindow();              // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}
+

OTRGui/libs/raylib/examples/textures/textures_image_drawing.c

@@ -0,0 +1,91 @@
+/*******************************************************************************************
+*
+*   raylib [textures] example - Image loading and drawing on it
+*
+*   NOTE: Images are loaded in CPU memory (RAM); textures are loaded in GPU memory (VRAM)
+*
+*   This example has been created using raylib 1.4 (www.raylib.com)
+*   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
+*
+*   Copyright (c) 2016 Ramon Santamaria (@raysan5)
+*
+********************************************************************************************/
+
+#include "raylib.h"
+
+int main(void)
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [textures] example - image drawing");
+
+    // NOTE: Textures MUST be loaded after Window initialization (OpenGL context is required)
+
+    Image cat = LoadImage("resources/cat.png");             // Load image in CPU memory (RAM)
+    ImageCrop(&cat, (Rectangle){ 100, 10, 280, 380 });      // Crop an image piece
+    ImageFlipHorizontal(&cat);                              // Flip cropped image horizontally
+    ImageResize(&cat, 150, 200);                            // Resize flipped-cropped image
+
+    Image parrots = LoadImage("resources/parrots.png");     // Load image in CPU memory (RAM)
+
+    // Draw one image over the other with a scaling of 1.5f
+    ImageDraw(&parrots, cat, (Rectangle){ 0, 0, (float)cat.width, (float)cat.height }, (Rectangle){ 30, 40, cat.width*1.5f, cat.height*1.5f }, WHITE);
+    ImageCrop(&parrots, (Rectangle){ 0, 50, (float)parrots.width, (float)parrots.height - 100 }); // Crop resulting image
+
+    // Draw on the image with a few image draw methods
+    ImageDrawPixel(&parrots, 10, 10, RAYWHITE);
+    ImageDrawCircle(&parrots, 10, 10, 5, RAYWHITE);
+    ImageDrawRectangle(&parrots, 5, 20, 10, 10, RAYWHITE);
+
+    UnloadImage(cat);       // Unload image from RAM
+
+    // Load custom font for frawing on image
+    Font font = LoadFont("resources/custom_jupiter_crash.png");
+
+    // Draw over image using custom font
+    ImageDrawTextEx(&parrots, font, "PARROTS & CAT", (Vector2){ 300, 230 }, (float)font.baseSize, -2, WHITE);
+
+    UnloadFont(font);       // Unload custom font (already drawn used on image)
+
+    Texture2D texture = LoadTextureFromImage(parrots);      // Image converted to texture, uploaded to GPU memory (VRAM)
+    UnloadImage(parrots);   // Once image has been converted to texture and uploaded to VRAM, it can be unloaded from RAM
+
+    SetTargetFPS(60);
+    //---------------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        // TODO: Update your variables here
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+
+            DrawTexture(texture, screenWidth/2 - texture.width/2, screenHeight/2 - texture.height/2 - 40, WHITE);
+            DrawRectangleLines(screenWidth/2 - texture.width/2, screenHeight/2 - texture.height/2 - 40, texture.width, texture.height, DARKGRAY);
+
+            DrawText("We are drawing only one texture from various images composed!", 240, 350, 10, DARKGRAY);
+            DrawText("Source images have been cropped, scaled, flipped and copied one over the other.", 190, 370, 10, DARKGRAY);
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    UnloadTexture(texture);       // Texture unloading
+
+    CloseWindow();                // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}

OTRGui/libs/raylib/examples/textures/textures_image_generation.c

@@ -0,0 +1,102 @@
+/*******************************************************************************************
+*
+*   raylib [textures] example - Procedural images generation
+*
+*   This example has been created using raylib 1.8 (www.raylib.com)
+*   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
+*
+*   Copyright (c) 2O17-2021 Wilhem Barbier (@nounoursheureux) and Ramon Santamaria (@raysan5)
+*
+********************************************************************************************/
+
+#include "raylib.h"
+
+#define NUM_TEXTURES  6      // Currently we have 7 generation algorithms
+
+int main(void)
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [textures] example - procedural images generation");
+
+    Image verticalGradient = GenImageGradientV(screenWidth, screenHeight, RED, BLUE);
+    Image horizontalGradient = GenImageGradientH(screenWidth, screenHeight, RED, BLUE);
+    Image radialGradient = GenImageGradientRadial(screenWidth, screenHeight, 0.0f, WHITE, BLACK);
+    Image checked = GenImageChecked(screenWidth, screenHeight, 32, 32, RED, BLUE);
+    Image whiteNoise = GenImageWhiteNoise(screenWidth, screenHeight, 0.5f);
+    Image cellular = GenImageCellular(screenWidth, screenHeight, 32);
+
+    Texture2D textures[NUM_TEXTURES] = { 0 };
+
+    textures[0] = LoadTextureFromImage(verticalGradient);
+    textures[1] = LoadTextureFromImage(horizontalGradient);
+    textures[2] = LoadTextureFromImage(radialGradient);
+    textures[3] = LoadTextureFromImage(checked);
+    textures[4] = LoadTextureFromImage(whiteNoise);
+    textures[5] = LoadTextureFromImage(cellular);
+
+    // Unload image data (CPU RAM)
+    UnloadImage(verticalGradient);
+    UnloadImage(horizontalGradient);
+    UnloadImage(radialGradient);
+    UnloadImage(checked);
+    UnloadImage(whiteNoise);
+    UnloadImage(cellular);
+
+    int currentTexture = 0;
+
+    SetTargetFPS(60);
+    //---------------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!WindowShouldClose())
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        if (IsMouseButtonPressed(MOUSE_BUTTON_LEFT) || IsKeyPressed(KEY_RIGHT))
+        {
+            currentTexture = (currentTexture + 1)%NUM_TEXTURES; // Cycle between the textures
+        }
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+
+            DrawTexture(textures[currentTexture], 0, 0, WHITE);
+
+            DrawRectangle(30, 400, 325, 30, Fade(SKYBLUE, 0.5f));
+            DrawRectangleLines(30, 400, 325, 30, Fade(WHITE, 0.5f));
+            DrawText("MOUSE LEFT BUTTON to CYCLE PROCEDURAL TEXTURES", 40, 410, 10, WHITE);
+
+            switch(currentTexture)
+            {
+                case 0: DrawText("VERTICAL GRADIENT", 560, 10, 20, RAYWHITE); break;
+                case 1: DrawText("HORIZONTAL GRADIENT", 540, 10, 20, RAYWHITE); break;
+                case 2: DrawText("RADIAL GRADIENT", 580, 10, 20, LIGHTGRAY); break;
+                case 3: DrawText("CHECKED", 680, 10, 20, RAYWHITE); break;
+                case 4: DrawText("WHITE NOISE", 640, 10, 20, RED); break;
+                case 5: DrawText("CELLULAR", 670, 10, 20, RAYWHITE); break;
+                default: break;
+            }
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+
+    // Unload textures data (GPU VRAM)
+    for (int i = 0; i < NUM_TEXTURES; i++) UnloadTexture(textures[i]);
+
+    CloseWindow();                // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}

OTRGui/libs/raylib/examples/textures/textures_image_loading.c

@@ -0,0 +1,64 @@
+/*******************************************************************************************
+*
+*   raylib [textures] example - Image loading and texture creation
+*
+*   NOTE: Images are loaded in CPU memory (RAM); textures are loaded in GPU memory (VRAM)
+*
+*   This example has been created using raylib 1.3 (www.raylib.com)
+*   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
+*
+*   Copyright (c) 2015 Ramon Santamaria (@raysan5)
+*
+********************************************************************************************/
+
+#include "raylib.h"
+
+int main(void)
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [textures] example - image loading");
+
+    // NOTE: Textures MUST be loaded after Window initialization (OpenGL context is required)
+
+    Image image = LoadImage("resources/raylib_logo.png");     // Loaded in CPU memory (RAM)
+    Texture2D texture = LoadTextureFromImage(image);          // Image converted to texture, GPU memory (VRAM)
+    UnloadImage(image);   // Once image has been converted to texture and uploaded to VRAM, it can be unloaded from RAM
+
+    SetTargetFPS(60);     // Set our game to run at 60 frames-per-second
+    //---------------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        // TODO: Update your variables here
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+
+            DrawTexture(texture, screenWidth/2 - texture.width/2, screenHeight/2 - texture.height/2, WHITE);
+
+            DrawText("this IS a texture loaded from an image!", 300, 370, 10, GRAY);
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    UnloadTexture(texture);       // Texture unloading
+
+    CloseWindow();                // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}

OTRGui/libs/raylib/examples/textures/textures_image_processing.c

@@ -0,0 +1,169 @@
+/*******************************************************************************************
+*
+*   raylib [textures] example - Image processing
+*
+*   NOTE: Images are loaded in CPU memory (RAM); textures are loaded in GPU memory (VRAM)
+*
+*   This example has been created using raylib 3.5 (www.raylib.com)
+*   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
+*
+*   Copyright (c) 2016 Ramon Santamaria (@raysan5)
+*
+********************************************************************************************/
+
+#include "raylib.h"
+
+#include <stdlib.h>             // Required for: free()
+
+#define NUM_PROCESSES    8
+
+typedef enum {
+    NONE = 0,
+    COLOR_GRAYSCALE,
+    COLOR_TINT,
+    COLOR_INVERT,
+    COLOR_CONTRAST,
+    COLOR_BRIGHTNESS,
+    FLIP_VERTICAL,
+    FLIP_HORIZONTAL
+} ImageProcess;
+
+static const char *processText[] = {
+    "NO PROCESSING",
+    "COLOR GRAYSCALE",
+    "COLOR TINT",
+    "COLOR INVERT",
+    "COLOR CONTRAST",
+    "COLOR BRIGHTNESS",
+    "FLIP VERTICAL",
+    "FLIP HORIZONTAL"
+};
+
+int main(void)
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [textures] example - image processing");
+
+    // NOTE: Textures MUST be loaded after Window initialization (OpenGL context is required)
+
+    Image imOrigin = LoadImage("resources/parrots.png");   // Loaded in CPU memory (RAM)
+    ImageFormat(&imOrigin, PIXELFORMAT_UNCOMPRESSED_R8G8B8A8);         // Format image to RGBA 32bit (required for texture update) <-- ISSUE
+    Texture2D texture = LoadTextureFromImage(imOrigin);    // Image converted to texture, GPU memory (VRAM)
+
+    Image imCopy = ImageCopy(imOrigin);
+
+    int currentProcess = NONE;
+    bool textureReload = false;
+
+    Rectangle toggleRecs[NUM_PROCESSES] = { 0 };
+    int mouseHoverRec = -1;
+
+    for (int i = 0; i < NUM_PROCESSES; i++) toggleRecs[i] = (Rectangle){ 40.0f, (float)(50 + 32*i), 150.0f, 30.0f };
+
+    SetTargetFPS(60);
+    //---------------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+
+        // Mouse toggle group logic
+        for (int i = 0; i < NUM_PROCESSES; i++)
+        {
+            if (CheckCollisionPointRec(GetMousePosition(), toggleRecs[i]))
+            {
+                mouseHoverRec = i;
+
+                if (IsMouseButtonReleased(MOUSE_BUTTON_LEFT))
+                {
+                    currentProcess = i;
+                    textureReload = true;
+                }
+                break;
+            }
+            else mouseHoverRec = -1;
+        }
+
+        // Keyboard toggle group logic
+        if (IsKeyPressed(KEY_DOWN))
+        {
+            currentProcess++;
+            if (currentProcess > (NUM_PROCESSES - 1)) currentProcess = 0;
+            textureReload = true;
+        }
+        else if (IsKeyPressed(KEY_UP))
+        {
+            currentProcess--;
+            if (currentProcess < 0) currentProcess = 7;
+            textureReload = true;
+        }
+
+        // Reload texture when required
+        if (textureReload)
+        {
+            UnloadImage(imCopy);                // Unload image-copy data
+            imCopy = ImageCopy(imOrigin);     // Restore image-copy from image-origin
+
+            // NOTE: Image processing is a costly CPU process to be done every frame,
+            // If image processing is required in a frame-basis, it should be done
+            // with a texture and by shaders
+            switch (currentProcess)
+            {
+                case COLOR_GRAYSCALE: ImageColorGrayscale(&imCopy); break;
+                case COLOR_TINT: ImageColorTint(&imCopy, GREEN); break;
+                case COLOR_INVERT: ImageColorInvert(&imCopy); break;
+                case COLOR_CONTRAST: ImageColorContrast(&imCopy, -40); break;
+                case COLOR_BRIGHTNESS: ImageColorBrightness(&imCopy, -80); break;
+                case FLIP_VERTICAL: ImageFlipVertical(&imCopy); break;
+                case FLIP_HORIZONTAL: ImageFlipHorizontal(&imCopy); break;
+                default: break;
+            }
+
+            Color *pixels = LoadImageColors(imCopy);    // Load pixel data from image (RGBA 32bit)
+            UpdateTexture(texture, pixels);             // Update texture with new image data
+            UnloadImageColors(pixels);                  // Unload pixels data from RAM
+
+            textureReload = false;
+        }
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+
+            DrawText("IMAGE PROCESSING:", 40, 30, 10, DARKGRAY);
+
+            // Draw rectangles
+            for (int i = 0; i < NUM_PROCESSES; i++)
+            {
+                DrawRectangleRec(toggleRecs[i], ((i == currentProcess) || (i == mouseHoverRec)) ? SKYBLUE : LIGHTGRAY);
+                DrawRectangleLines((int)toggleRecs[i].x, (int) toggleRecs[i].y, (int) toggleRecs[i].width, (int) toggleRecs[i].height, ((i == currentProcess) || (i == mouseHoverRec)) ? BLUE : GRAY);
+                DrawText( processText[i], (int)( toggleRecs[i].x + toggleRecs[i].width/2 - MeasureText(processText[i], 10)/2), (int) toggleRecs[i].y + 11, 10, ((i == currentProcess) || (i == mouseHoverRec)) ? DARKBLUE : DARKGRAY);
+            }
+
+            DrawTexture(texture, screenWidth - texture.width - 60, screenHeight/2 - texture.height/2, WHITE);
+            DrawRectangleLines(screenWidth - texture.width - 60, screenHeight/2 - texture.height/2, texture.width, texture.height, BLACK);
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    UnloadTexture(texture);       // Unload texture from VRAM
+    UnloadImage(imOrigin);        // Unload image-origin from RAM
+    UnloadImage(imCopy);          // Unload image-copy from RAM
+
+    CloseWindow();                // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}

OTRGui/libs/raylib/examples/textures/textures_image_text.c

@@ -0,0 +1,83 @@
+/*******************************************************************************************
+*
+*   raylib [texture] example - Image text drawing using TTF generated font
+*
+*   This example has been created using raylib 1.8 (www.raylib.com)
+*   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
+*
+*   Copyright (c) 2017 Ramon Santamaria (@raysan5)
+*
+********************************************************************************************/
+
+#include "raylib.h"
+
+int main(void)
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [texture] example - image text drawing");
+
+    Image parrots = LoadImage("resources/parrots.png"); // Load image in CPU memory (RAM)
+
+    // TTF Font loading with custom generation parameters
+    Font font = LoadFontEx("resources/KAISG.ttf", 64, 0, 0);
+
+    // Draw over image using custom font
+    ImageDrawTextEx(&parrots, font, "[Parrots font drawing]", (Vector2){ 20.0f, 20.0f }, (float)font.baseSize, 0.0f, RED);
+
+    Texture2D texture = LoadTextureFromImage(parrots);  // Image converted to texture, uploaded to GPU memory (VRAM)
+    UnloadImage(parrots);   // Once image has been converted to texture and uploaded to VRAM, it can be unloaded from RAM
+
+    Vector2 position = { (float)(screenWidth/2 - texture.width/2), (float)(screenHeight/2 - texture.height/2 - 20) };
+
+    bool showFont = false;
+
+    SetTargetFPS(60);
+    //--------------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        if (IsKeyDown(KEY_SPACE)) showFont = true;
+        else showFont = false;
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+
+            if (!showFont)
+            {
+                // Draw texture with text already drawn inside
+                DrawTextureV(texture, position, WHITE);
+
+                // Draw text directly using sprite font
+                DrawTextEx(font, "[Parrots font drawing]", (Vector2){ position.x + 20,
+                           position.y + 20 + 280 }, (float)font.baseSize, 0.0f, WHITE);
+            }
+            else DrawTexture(font.texture, screenWidth/2 - font.texture.width/2, 50, BLACK);
+
+            DrawText("PRESS SPACE to SHOW FONT ATLAS USED", 290, 420, 10, DARKGRAY);
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    UnloadTexture(texture);     // Texture unloading
+
+    UnloadFont(font);           // Unload custom font
+
+    CloseWindow();              // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}

OTRGui/libs/raylib/examples/textures/textures_logo_raylib.c

@@ -0,0 +1,57 @@
+/*******************************************************************************************
+*
+*   raylib [textures] example - Texture loading and drawing
+*
+*   This example has been created using raylib 1.0 (www.raylib.com)
+*   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
+*
+*   Copyright (c) 2014 Ramon Santamaria (@raysan5)
+*
+********************************************************************************************/
+
+#include "raylib.h"
+
+int main(void)
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [textures] example - texture loading and drawing");
+
+    // NOTE: Textures MUST be loaded after Window initialization (OpenGL context is required)
+    Texture2D texture = LoadTexture("resources/raylib_logo.png");        // Texture loading
+    //---------------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        // TODO: Update your variables here
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+
+            DrawTexture(texture, screenWidth/2 - texture.width/2, screenHeight/2 - texture.height/2, WHITE);
+
+            DrawText("this IS a texture!", 360, 370, 10, GRAY);
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    UnloadTexture(texture);       // Texture unloading
+
+    CloseWindow();                // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}

OTRGui/libs/raylib/examples/textures/textures_mouse_painting.c

@@ -0,0 +1,221 @@
+/*******************************************************************************************
+*
+*   raylib [textures] example - Mouse painting
+*
+*   This example has been created using raylib 2.5 (www.raylib.com)
+*   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
+*
+*   Example contributed by Chris Dill (@MysteriousSpace) and reviewed by Ramon Santamaria (@raysan5)
+*
+*   Copyright (c) 2019 Chris Dill (@MysteriousSpace) and Ramon Santamaria (@raysan5)
+*
+********************************************************************************************/
+
+#include "raylib.h"
+
+#define MAX_COLORS_COUNT    23          // Number of colors available
+
+int main(void)
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [textures] example - mouse painting");
+
+    // Colours to choose from
+    Color colors[MAX_COLORS_COUNT] = {
+        RAYWHITE, YELLOW, GOLD, ORANGE, PINK, RED, MAROON, GREEN, LIME, DARKGREEN,
+        SKYBLUE, BLUE, DARKBLUE, PURPLE, VIOLET, DARKPURPLE, BEIGE, BROWN, DARKBROWN,
+        LIGHTGRAY, GRAY, DARKGRAY, BLACK };
+
+    // Define colorsRecs data (for every rectangle)
+    Rectangle colorsRecs[MAX_COLORS_COUNT] = { 0 };
+
+    for (int i = 0; i < MAX_COLORS_COUNT; i++)
+    {
+        colorsRecs[i].x = 10 + 30.0f*i + 2*i;
+        colorsRecs[i].y = 10;
+        colorsRecs[i].width = 30;
+        colorsRecs[i].height = 30;
+    }
+
+    int colorSelected = 0;
+    int colorSelectedPrev = colorSelected;
+    int colorMouseHover = 0;
+    float brushSize = 20.0f;
+    bool mouseWasPressed = false;
+
+    Rectangle btnSaveRec = { 750, 10, 40, 30 };
+    bool btnSaveMouseHover = false;
+    bool showSaveMessage = false;
+    int saveMessageCounter = 0;
+
+    // Create a RenderTexture2D to use as a canvas
+    RenderTexture2D target = LoadRenderTexture(screenWidth, screenHeight);
+
+    // Clear render texture before entering the game loop
+    BeginTextureMode(target);
+    ClearBackground(colors[0]);
+    EndTextureMode();
+
+    SetTargetFPS(120);              // Set our game to run at 120 frames-per-second
+    //--------------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        Vector2 mousePos = GetMousePosition();
+
+        // Move between colors with keys
+        if (IsKeyPressed(KEY_RIGHT)) colorSelected++;
+        else if (IsKeyPressed(KEY_LEFT)) colorSelected--;
+
+        if (colorSelected >= MAX_COLORS_COUNT) colorSelected = MAX_COLORS_COUNT - 1;
+        else if (colorSelected < 0) colorSelected = 0;
+
+        // Choose color with mouse
+        for (int i = 0; i < MAX_COLORS_COUNT; i++)
+        {
+            if (CheckCollisionPointRec(mousePos, colorsRecs[i]))
+            {
+                colorMouseHover = i;
+                break;
+            }
+            else colorMouseHover = -1;
+        }
+
+        if ((colorMouseHover >= 0) && IsMouseButtonPressed(MOUSE_BUTTON_LEFT))
+        {
+            colorSelected = colorMouseHover;
+            colorSelectedPrev = colorSelected;
+        }
+
+        // Change brush size
+        brushSize += GetMouseWheelMove()*5;
+        if (brushSize < 2) brushSize = 2;
+        if (brushSize > 50) brushSize = 50;
+
+        if (IsKeyPressed(KEY_C))
+        {
+            // Clear render texture to clear color
+            BeginTextureMode(target);
+            ClearBackground(colors[0]);
+            EndTextureMode();
+        }
+
+        if (IsMouseButtonDown(MOUSE_BUTTON_LEFT) || (GetGestureDetected() == GESTURE_DRAG))
+        {
+            // Paint circle into render texture
+            // NOTE: To avoid discontinuous circles, we could store
+            // previous-next mouse points and just draw a line using brush size
+            BeginTextureMode(target);
+            if (mousePos.y > 50) DrawCircle((int)mousePos.x, (int)mousePos.y, brushSize, colors[colorSelected]);
+            EndTextureMode();
+        }
+
+        if (IsMouseButtonDown(MOUSE_BUTTON_RIGHT))
+        {
+            if (!mouseWasPressed)
+            {
+                colorSelectedPrev = colorSelected;
+                colorSelected = 0;
+            }
+
+            mouseWasPressed = true;
+
+            // Erase circle from render texture
+            BeginTextureMode(target);
+            if (mousePos.y > 50) DrawCircle((int)mousePos.x, (int)mousePos.y, brushSize, colors[0]);
+            EndTextureMode();
+        }
+        else if (IsMouseButtonReleased(MOUSE_BUTTON_RIGHT) && mouseWasPressed)
+        {
+            colorSelected = colorSelectedPrev;
+            mouseWasPressed = false;
+        }
+
+        // Check mouse hover save button
+        if (CheckCollisionPointRec(mousePos, btnSaveRec)) btnSaveMouseHover = true;
+        else btnSaveMouseHover = false;
+
+        // Image saving logic
+        // NOTE: Saving painted texture to a default named image
+        if ((btnSaveMouseHover && IsMouseButtonReleased(MOUSE_BUTTON_LEFT)) || IsKeyPressed(KEY_S))
+        {
+            Image image = LoadImageFromTexture(target.texture);
+            ImageFlipVertical(&image);
+            ExportImage(image, "my_amazing_texture_painting.png");
+            UnloadImage(image);
+            showSaveMessage = true;
+        }
+
+        if (showSaveMessage)
+        {
+            // On saving, show a full screen message for 2 seconds
+            saveMessageCounter++;
+            if (saveMessageCounter > 240)
+            {
+                showSaveMessage = false;
+                saveMessageCounter = 0;
+            }
+        }
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+        ClearBackground(RAYWHITE);
+
+        // NOTE: Render texture must be y-flipped due to default OpenGL coordinates (left-bottom)
+        DrawTextureRec(target.texture, (Rectangle) { 0, 0, (float)target.texture.width, (float)-target.texture.height }, (Vector2) { 0, 0 }, WHITE);
+
+        // Draw drawing circle for reference
+        if (mousePos.y > 50)
+        {
+            if (IsMouseButtonDown(MOUSE_BUTTON_RIGHT)) DrawCircleLines((int)mousePos.x, (int)mousePos.y, brushSize, GRAY);
+            else DrawCircle(GetMouseX(), GetMouseY(), brushSize, colors[colorSelected]);
+        }
+
+        // Draw top panel
+        DrawRectangle(0, 0, GetScreenWidth(), 50, RAYWHITE);
+        DrawLine(0, 50, GetScreenWidth(), 50, LIGHTGRAY);
+
+        // Draw color selection rectangles
+        for (int i = 0; i < MAX_COLORS_COUNT; i++) DrawRectangleRec(colorsRecs[i], colors[i]);
+        DrawRectangleLines(10, 10, 30, 30, LIGHTGRAY);
+
+        if (colorMouseHover >= 0) DrawRectangleRec(colorsRecs[colorMouseHover], Fade(WHITE, 0.6f));
+
+        DrawRectangleLinesEx((Rectangle){ colorsRecs[colorSelected].x - 2, colorsRecs[colorSelected].y - 2,
+                             colorsRecs[colorSelected].width + 4, colorsRecs[colorSelected].height + 4 }, 2, BLACK);
+
+        // Draw save image button
+        DrawRectangleLinesEx(btnSaveRec, 2, btnSaveMouseHover ? RED : BLACK);
+        DrawText("SAVE!", 755, 20, 10, btnSaveMouseHover ? RED : BLACK);
+
+        // Draw save image message
+        if (showSaveMessage)
+        {
+            DrawRectangle(0, 0, GetScreenWidth(), GetScreenHeight(), Fade(RAYWHITE, 0.8f));
+            DrawRectangle(0, 150, GetScreenWidth(), 80, BLACK);
+            DrawText("IMAGE SAVED:  my_amazing_texture_painting.png", 150, 180, 20, RAYWHITE);
+        }
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    UnloadRenderTexture(target);    // Unload render texture
+
+    CloseWindow();                  // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}

OTRGui/libs/raylib/examples/textures/textures_npatch_drawing.c

@@ -0,0 +1,109 @@
+/*******************************************************************************************
+*
+*   raylib [textures] example - N-patch drawing
+*
+*   NOTE: Images are loaded in CPU memory (RAM); textures are loaded in GPU memory (VRAM)
+*
+*   This example has been created using raylib 2.0 (www.raylib.com)
+*   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
+*
+*   Example contributed by Jorge A. Gomes (@overdev) and reviewed by Ramon Santamaria (@raysan5)
+*
+*   Copyright (c) 2018 Jorge A. Gomes (@overdev) and Ramon Santamaria (@raysan5)
+*
+********************************************************************************************/
+
+#include "raylib.h"
+
+int main(void)
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [textures] example - N-patch drawing");
+
+    // NOTE: Textures MUST be loaded after Window initialization (OpenGL context is required)
+    Texture2D nPatchTexture = LoadTexture("resources/ninepatch_button.png");
+
+    Vector2 mousePosition = { 0 };
+    Vector2 origin = { 0.0f, 0.0f };
+
+    // Position and size of the n-patches
+    Rectangle dstRec1 = { 480.0f, 160.0f, 32.0f, 32.0f };
+    Rectangle dstRec2 = { 160.0f, 160.0f, 32.0f, 32.0f };
+    Rectangle dstRecH = { 160.0f, 93.0f, 32.0f, 32.0f };
+    Rectangle dstRecV = { 92.0f, 160.0f, 32.0f, 32.0f };
+
+    // A 9-patch (NPATCH_NINE_PATCH) changes its sizes in both axis
+    NPatchInfo ninePatchInfo1 = { (Rectangle){ 0.0f, 0.0f, 64.0f, 64.0f }, 12, 40, 12, 12, NPATCH_NINE_PATCH };
+    NPatchInfo ninePatchInfo2 = { (Rectangle){ 0.0f, 128.0f, 64.0f, 64.0f }, 16, 16, 16, 16, NPATCH_NINE_PATCH };
+
+    // A horizontal 3-patch (NPATCH_THREE_PATCH_HORIZONTAL) changes its sizes along the x axis only
+    NPatchInfo h3PatchInfo = { (Rectangle){ 0.0f,  64.0f, 64.0f, 64.0f }, 8, 8, 8, 8, NPATCH_THREE_PATCH_HORIZONTAL };
+
+    // A vertical 3-patch (NPATCH_THREE_PATCH_VERTICAL) changes its sizes along the y axis only
+    NPatchInfo v3PatchInfo = { (Rectangle){ 0.0f, 192.0f, 64.0f, 64.0f }, 6, 6, 6, 6, NPATCH_THREE_PATCH_VERTICAL };
+
+    SetTargetFPS(60);
+    //---------------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        mousePosition = GetMousePosition();
+
+        // Resize the n-patches based on mouse position
+        dstRec1.width = mousePosition.x - dstRec1.x;
+        dstRec1.height = mousePosition.y - dstRec1.y;
+        dstRec2.width = mousePosition.x - dstRec2.x;
+        dstRec2.height = mousePosition.y - dstRec2.y;
+        dstRecH.width = mousePosition.x - dstRecH.x;
+        dstRecV.height = mousePosition.y - dstRecV.y;
+
+        // Set a minimum width and/or height
+        if (dstRec1.width < 1.0f) dstRec1.width = 1.0f;
+        if (dstRec1.width > 300.0f) dstRec1.width = 300.0f;
+        if (dstRec1.height < 1.0f) dstRec1.height = 1.0f;
+        if (dstRec2.width < 1.0f) dstRec2.width = 1.0f;
+        if (dstRec2.width > 300.0f) dstRec2.width = 300.0f;
+        if (dstRec2.height < 1.0f) dstRec2.height = 1.0f;
+        if (dstRecH.width < 1.0f) dstRecH.width = 1.0f;
+        if (dstRecV.height < 1.0f) dstRecV.height = 1.0f;
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+
+            // Draw the n-patches
+            DrawTextureNPatch(nPatchTexture, ninePatchInfo2, dstRec2, origin, 0.0f, WHITE);
+            DrawTextureNPatch(nPatchTexture, ninePatchInfo1, dstRec1, origin, 0.0f, WHITE);
+            DrawTextureNPatch(nPatchTexture, h3PatchInfo, dstRecH, origin, 0.0f, WHITE);
+            DrawTextureNPatch(nPatchTexture, v3PatchInfo, dstRecV, origin, 0.0f, WHITE);
+
+            // Draw the source texture
+            DrawRectangleLines(5, 88, 74, 266, BLUE);
+            DrawTexture(nPatchTexture, 10, 93, WHITE);
+            DrawText("TEXTURE", 15, 360, 10, DARKGRAY);
+
+            DrawText("Move the mouse to stretch or shrink the n-patches", 10, 20, 20, DARKGRAY);
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    UnloadTexture(nPatchTexture);       // Texture unloading
+
+    CloseWindow();                // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}

OTRGui/libs/raylib/examples/textures/textures_particles_blending.c

@@ -0,0 +1,135 @@
+/*******************************************************************************************
+*
+*   raylib example - particles blending
+*
+*   This example has been created using raylib 1.7 (www.raylib.com)
+*   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
+*
+*   Copyright (c) 2017 Ramon Santamaria (@raysan5)
+*
+********************************************************************************************/
+
+#include "raylib.h"
+
+#define MAX_PARTICLES 200
+
+// Particle structure with basic data
+typedef struct {
+    Vector2 position;
+    Color color;
+    float alpha;
+    float size;
+    float rotation;
+    bool active;        // NOTE: Use it to activate/deactive particle
+} Particle;
+
+int main(void)
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [textures] example - particles blending");
+
+    // Particles pool, reuse them!
+    Particle mouseTail[MAX_PARTICLES] = { 0 };
+
+    // Initialize particles
+    for (int i = 0; i < MAX_PARTICLES; i++)
+    {
+        mouseTail[i].position = (Vector2){ 0, 0 };
+        mouseTail[i].color = (Color){ GetRandomValue(0, 255), GetRandomValue(0, 255), GetRandomValue(0, 255), 255 };
+        mouseTail[i].alpha = 1.0f;
+        mouseTail[i].size = (float)GetRandomValue(1, 30)/20.0f;
+        mouseTail[i].rotation = (float)GetRandomValue(0, 360);
+        mouseTail[i].active = false;
+    }
+
+    float gravity = 3.0f;
+
+    Texture2D smoke = LoadTexture("resources/spark_flame.png");
+
+    int blending = BLEND_ALPHA;
+
+    SetTargetFPS(60);
+    //--------------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+
+        // Activate one particle every frame and Update active particles
+        // NOTE: Particles initial position should be mouse position when activated
+        // NOTE: Particles fall down with gravity and rotation... and disappear after 2 seconds (alpha = 0)
+        // NOTE: When a particle disappears, active = false and it can be reused.
+        for (int i = 0; i < MAX_PARTICLES; i++)
+        {
+            if (!mouseTail[i].active)
+            {
+                mouseTail[i].active = true;
+                mouseTail[i].alpha = 1.0f;
+                mouseTail[i].position = GetMousePosition();
+                i = MAX_PARTICLES;
+            }
+        }
+
+        for (int i = 0; i < MAX_PARTICLES; i++)
+        {
+            if (mouseTail[i].active)
+            {
+                mouseTail[i].position.y += gravity/2;
+                mouseTail[i].alpha -= 0.005f;
+
+                if (mouseTail[i].alpha <= 0.0f) mouseTail[i].active = false;
+
+                mouseTail[i].rotation += 2.0f;
+            }
+        }
+
+        if (IsKeyPressed(KEY_SPACE))
+        {
+            if (blending == BLEND_ALPHA) blending = BLEND_ADDITIVE;
+            else blending = BLEND_ALPHA;
+        }
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(DARKGRAY);
+
+            BeginBlendMode(blending);
+
+                // Draw active particles
+                for (int i = 0; i < MAX_PARTICLES; i++)
+                {
+                    if (mouseTail[i].active) DrawTexturePro(smoke, (Rectangle){ 0.0f, 0.0f, (float)smoke.width, (float)smoke.height },
+                                                           (Rectangle){ mouseTail[i].position.x, mouseTail[i].position.y, smoke.width*mouseTail[i].size, smoke.height*mouseTail[i].size },
+                                                           (Vector2){ (float)(smoke.width*mouseTail[i].size/2.0f), (float)(smoke.height*mouseTail[i].size/2.0f) }, mouseTail[i].rotation,
+                                                           Fade(mouseTail[i].color, mouseTail[i].alpha));
+                }
+
+            EndBlendMode();
+
+            DrawText("PRESS SPACE to CHANGE BLENDING MODE", 180, 20, 20, BLACK);
+
+            if (blending == BLEND_ALPHA) DrawText("ALPHA BLENDING", 290, screenHeight - 40, 20, BLACK);
+            else DrawText("ADDITIVE BLENDING", 280, screenHeight - 40, 20, RAYWHITE);
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    UnloadTexture(smoke);
+
+    CloseWindow();        // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}

OTRGui/libs/raylib/examples/textures/textures_polygon.c

@@ -0,0 +1,100 @@
+/*******************************************************************************************
+*
+*   raylib [shapes] example - Draw Textured Polygon
+*
+*   This example has been created using raylib 3.7 (www.raylib.com)
+*   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
+*
+*   Example contributed by Chris Camacho (@codifies - bedroomcoders.co.uk) and
+*   reviewed by Ramon Santamaria (@raysan5)
+*
+*   Copyright (c) 2021 Chris Camacho (@codifies) and Ramon Santamaria (@raysan5)
+*
+********************************************************************************************/
+
+#include "raylib.h"
+#include "raymath.h"
+
+#define MAX_POINTS  11      // 10 points and back to the start
+
+int main(void)
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+    
+    InitWindow(screenWidth, screenHeight, "raylib [textures] example - textured polygon");
+
+    // Define texture coordinates to map our texture to poly
+    Vector2 texcoords[MAX_POINTS] = {
+        (Vector2){ 0.75f, 0.0f },
+        (Vector2){ 0.25f, 0.0f },
+        (Vector2){ 0.0f, 0.5f },
+        (Vector2){ 0.0f, 0.75f },
+        (Vector2){ 0.25f, 1.0f},
+        (Vector2){ 0.375f, 0.875f},
+        (Vector2){ 0.625f, 0.875f},
+        (Vector2){ 0.75f, 1.0f},
+        (Vector2){ 1.0f, 0.75f},
+        (Vector2){ 1.0f, 0.5f},
+        (Vector2){ 0.75f, 0.0f}  // Close the poly
+    };
+
+    // Define the base poly vertices from the UV's
+    // NOTE: They can be specified in any other way
+    Vector2 points[MAX_POINTS] = { 0 };
+    for (int i = 0; i < MAX_POINTS; i++)
+    {
+        points[i].x = (texcoords[i].x - 0.5f)*256.0f;
+        points[i].y = (texcoords[i].y - 0.5f)*256.0f;
+    }
+    
+    // Define the vertices drawing position
+    // NOTE: Initially same as points but updated every frame
+    Vector2 positions[MAX_POINTS] = { 0 };
+    for (int i = 0; i < MAX_POINTS; i++) positions[i] = points[i];
+
+    // Load texture to be mapped to poly
+    Texture texture = LoadTexture("resources/cat.png");
+
+    float angle = 0.0f;             // Rotation angle (in degrees)
+
+    SetTargetFPS(60);               // Set our game to run at 60 frames-per-second
+    //--------------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        // Update points rotation with an angle transform
+        // NOTE: Base points position are not modified
+        angle++;
+        for (int i = 0; i < MAX_POINTS; i++) positions[i] = Vector2Rotate(points[i], angle*DEG2RAD);
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+
+            DrawText("textured polygon", 20, 20, 20, DARKGRAY);
+
+            DrawTexturePoly(texture, (Vector2){ GetScreenWidth()/2, GetScreenHeight()/2 },
+                            positions, texcoords, MAX_POINTS, WHITE);
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    UnloadTexture(texture); // Unload texture
+
+    CloseWindow();          // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}

OTRGui/libs/raylib/examples/textures/textures_raw_data.c

@@ -0,0 +1,99 @@
+/*******************************************************************************************
+*
+*   raylib [textures] example - Load textures from raw data
+*
+*   NOTE: Images are loaded in CPU memory (RAM); textures are loaded in GPU memory (VRAM)
+*
+*   This example has been created using raylib 1.3 (www.raylib.com)
+*   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
+*
+*   Copyright (c) 2015 Ramon Santamaria (@raysan5)
+*
+********************************************************************************************/
+
+#include "raylib.h"
+
+#include <stdlib.h>         // Required for: malloc() and free()
+
+int main(void)
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [textures] example - texture from raw data");
+
+    // NOTE: Textures MUST be loaded after Window initialization (OpenGL context is required)
+
+    // Load RAW image data (512x512, 32bit RGBA, no file header)
+    Image fudesumiRaw = LoadImageRaw("resources/fudesumi.raw", 384, 512, PIXELFORMAT_UNCOMPRESSED_R8G8B8A8, 0);
+    Texture2D fudesumi = LoadTextureFromImage(fudesumiRaw);  // Upload CPU (RAM) image to GPU (VRAM)
+    UnloadImage(fudesumiRaw);                                // Unload CPU (RAM) image data
+
+    // Generate a checked texture by code
+    int width = 960;
+    int height = 480;
+
+    // Dynamic memory allocation to store pixels data (Color type)
+    Color *pixels = (Color *)malloc(width*height*sizeof(Color));
+
+    for (int y = 0; y < height; y++)
+    {
+        for (int x = 0; x < width; x++)
+        {
+            if (((x/32+y/32)/1)%2 == 0) pixels[y*width + x] = ORANGE;
+            else pixels[y*width + x] = GOLD;
+        }
+    }
+
+    // Load pixels data into an image structure and create texture
+    Image checkedIm = {
+        .data = pixels,             // We can assign pixels directly to data
+        .width = width,
+        .height = height,
+        .format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8,
+        .mipmaps = 1
+    };
+
+    Texture2D checked = LoadTextureFromImage(checkedIm);
+    UnloadImage(checkedIm);         // Unload CPU (RAM) image data (pixels)
+    //---------------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        // TODO: Update your variables here
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+
+            DrawTexture(checked, screenWidth/2 - checked.width/2, screenHeight/2 - checked.height/2, Fade(WHITE, 0.5f));
+            DrawTexture(fudesumi, 430, -30, WHITE);
+
+            DrawText("CHECKED TEXTURE ", 84, 85, 30, BROWN);
+            DrawText("GENERATED by CODE", 72, 148, 30, BROWN);
+            DrawText("and RAW IMAGE LOADING", 46, 210, 30, BROWN);
+
+            DrawText("(c) Fudesumi sprite by Eiden Marsal", 310, screenHeight - 20, 10, BROWN);
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    UnloadTexture(fudesumi);    // Texture unloading
+    UnloadTexture(checked);     // Texture unloading
+
+    CloseWindow();              // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}

OTRGui/libs/raylib/examples/textures/textures_rectangle.c

@@ -0,0 +1,99 @@
+/*******************************************************************************************
+*
+*   raylib [textures] example - Texture loading and drawing a part defined by a rectangle
+*
+*   This example has been created using raylib 1.3 (www.raylib.com)
+*   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
+*
+*   Copyright (c) 2014 Ramon Santamaria (@raysan5)
+*
+********************************************************************************************/
+
+#include "raylib.h"
+
+#define MAX_FRAME_SPEED     15
+#define MIN_FRAME_SPEED      1
+
+int main(void)
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [texture] example - texture rectangle");
+
+    // NOTE: Textures MUST be loaded after Window initialization (OpenGL context is required)
+    Texture2D scarfy = LoadTexture("resources/scarfy.png");        // Texture loading
+
+    Vector2 position = { 350.0f, 280.0f };
+    Rectangle frameRec = { 0.0f, 0.0f, (float)scarfy.width/6, (float)scarfy.height };
+    int currentFrame = 0;
+
+    int framesCounter = 0;
+    int framesSpeed = 8;            // Number of spritesheet frames shown by second
+
+    SetTargetFPS(60);               // Set our game to run at 60 frames-per-second
+    //--------------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        framesCounter++;
+
+        if (framesCounter >= (60/framesSpeed))
+        {
+            framesCounter = 0;
+            currentFrame++;
+
+            if (currentFrame > 5) currentFrame = 0;
+
+            frameRec.x = (float)currentFrame*(float)scarfy.width/6;
+        }
+
+        if (IsKeyPressed(KEY_RIGHT)) framesSpeed++;
+        else if (IsKeyPressed(KEY_LEFT)) framesSpeed--;
+
+        if (framesSpeed > MAX_FRAME_SPEED) framesSpeed = MAX_FRAME_SPEED;
+        else if (framesSpeed < MIN_FRAME_SPEED) framesSpeed = MIN_FRAME_SPEED;
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+
+            DrawTexture(scarfy, 15, 40, WHITE);
+            DrawRectangleLines(15, 40, scarfy.width, scarfy.height, LIME);
+            DrawRectangleLines(15 + (int)frameRec.x, 40 + (int)frameRec.y, (int)frameRec.width, (int)frameRec.height, RED);
+
+            DrawText("FRAME SPEED: ", 165, 210, 10, DARKGRAY);
+            DrawText(TextFormat("%02i FPS", framesSpeed), 575, 210, 10, DARKGRAY);
+            DrawText("PRESS RIGHT/LEFT KEYS to CHANGE SPEED!", 290, 240, 10, DARKGRAY);
+
+            for (int i = 0; i < MAX_FRAME_SPEED; i++)
+            {
+                if (i < framesSpeed) DrawRectangle(250 + 21*i, 205, 20, 20, RED);
+                DrawRectangleLines(250 + 21*i, 205, 20, 20, MAROON);
+            }
+
+            DrawTextureRec(scarfy, frameRec, position, WHITE);  // Draw part of the texture
+
+            DrawText("(c) Scarfy sprite by Eiden Marsal", screenWidth - 200, screenHeight - 20, 10, GRAY);
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    UnloadTexture(scarfy);       // Texture unloading
+
+    CloseWindow();                // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}

OTRGui/libs/raylib/examples/textures/textures_sprite_button.c

@@ -0,0 +1,97 @@
+/*******************************************************************************************
+*
+*   raylib [textures] example - sprite button
+*
+*   This example has been created using raylib 2.5 (www.raylib.com)
+*   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
+*
+*   Copyright (c) 2019 Ramon Santamaria (@raysan5)
+*
+********************************************************************************************/
+
+#include "raylib.h"
+
+#define NUM_FRAMES  3       // Number of frames (rectangles) for the button sprite texture
+
+int main(void)
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [textures] example - sprite button");
+
+    InitAudioDevice();      // Initialize audio device
+
+    Sound fxButton = LoadSound("resources/buttonfx.wav");   // Load button sound
+    Texture2D button = LoadTexture("resources/button.png"); // Load button texture
+
+    // Define frame rectangle for drawing
+    float frameHeight = (float)button.height/NUM_FRAMES;
+    Rectangle sourceRec = { 0, 0, (float)button.width, frameHeight };
+
+    // Define button bounds on screen
+    Rectangle btnBounds = { screenWidth/2.0f - button.width/2.0f, screenHeight/2.0f - button.height/NUM_FRAMES/2.0f, (float)button.width, frameHeight };
+
+    int btnState = 0;               // Button state: 0-NORMAL, 1-MOUSE_HOVER, 2-PRESSED
+    bool btnAction = false;         // Button action should be activated
+
+    Vector2 mousePoint = { 0.0f, 0.0f };
+
+    SetTargetFPS(60);
+    //--------------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        mousePoint = GetMousePosition();
+        btnAction = false;
+
+        // Check button state
+        if (CheckCollisionPointRec(mousePoint, btnBounds))
+        {
+            if (IsMouseButtonDown(MOUSE_BUTTON_LEFT)) btnState = 2;
+            else btnState = 1;
+
+            if (IsMouseButtonReleased(MOUSE_BUTTON_LEFT)) btnAction = true;
+        }
+        else btnState = 0;
+
+        if (btnAction)
+        {
+            PlaySound(fxButton);
+
+            // TODO: Any desired action
+        }
+
+        // Calculate button frame rectangle to draw depending on button state
+        sourceRec.y = btnState*frameHeight;
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+
+            DrawTextureRec(button, sourceRec, (Vector2){ btnBounds.x, btnBounds.y }, WHITE); // Draw button frame
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    UnloadTexture(button);  // Unload button texture
+    UnloadSound(fxButton);  // Unload sound
+
+    CloseAudioDevice();     // Close audio device
+
+    CloseWindow();          // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}

OTRGui/libs/raylib/examples/textures/textures_sprite_explosion.c

@@ -0,0 +1,120 @@
+/*******************************************************************************************
+*
+*   raylib [textures] example - sprite explosion
+*
+*   This example has been created using raylib 2.5 (www.raylib.com)
+*   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
+*
+*   Copyright (c) 2019 Anata and Ramon Santamaria (@raysan5)
+*
+********************************************************************************************/
+
+#include "raylib.h"
+
+#define NUM_FRAMES_PER_LINE     5
+#define NUM_LINES               5
+
+int main(void)
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [textures] example - sprite explosion");
+
+    InitAudioDevice();
+
+    // Load explosion sound
+    Sound fxBoom = LoadSound("resources/boom.wav");
+
+    // Load explosion texture
+    Texture2D explosion = LoadTexture("resources/explosion.png");
+
+    // Init variables for animation
+    float frameWidth = (float)(explosion.width/NUM_FRAMES_PER_LINE);   // Sprite one frame rectangle width
+    float frameHeight = (float)(explosion.height/NUM_LINES);           // Sprite one frame rectangle height
+    int currentFrame = 0;
+    int currentLine = 0;
+
+    Rectangle frameRec = { 0, 0, frameWidth, frameHeight };
+    Vector2 position = { 0.0f, 0.0f };
+
+    bool active = false;
+    int framesCounter = 0;
+
+    SetTargetFPS(120);
+    //--------------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+
+        // Check for mouse button pressed and activate explosion (if not active)
+        if (IsMouseButtonPressed(MOUSE_BUTTON_LEFT) && !active)
+        {
+            position = GetMousePosition();
+            active = true;
+
+            position.x -= frameWidth/2.0f;
+            position.y -= frameHeight/2.0f;
+
+            PlaySound(fxBoom);
+        }
+
+        // Compute explosion animation frames
+        if (active)
+        {
+            framesCounter++;
+
+            if (framesCounter > 2)
+            {
+                currentFrame++;
+
+                if (currentFrame >= NUM_FRAMES_PER_LINE)
+                {
+                    currentFrame = 0;
+                    currentLine++;
+
+                    if (currentLine >= NUM_LINES)
+                    {
+                        currentLine = 0;
+                        active = false;
+                    }
+                }
+
+                framesCounter = 0;
+            }
+        }
+
+        frameRec.x = frameWidth*currentFrame;
+        frameRec.y = frameHeight*currentLine;
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+
+            // Draw explosion required frame rectangle
+            if (active) DrawTextureRec(explosion, frameRec, position, WHITE);
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    UnloadTexture(explosion);   // Unload texture
+    UnloadSound(fxBoom);        // Unload sound
+
+    CloseAudioDevice();
+
+    CloseWindow();              // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}

OTRGui/libs/raylib/examples/textures/textures_srcrec_dstrec.c

@@ -0,0 +1,82 @@
+/*******************************************************************************************
+*
+*   raylib [textures] example - Texture source and destination rectangles
+*
+*   This example has been created using raylib 1.3 (www.raylib.com)
+*   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
+*
+*   Copyright (c) 2015 Ramon Santamaria (@raysan5)
+*
+********************************************************************************************/
+
+#include "raylib.h"
+
+int main(void)
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [textures] examples - texture source and destination rectangles");
+
+    // NOTE: Textures MUST be loaded after Window initialization (OpenGL context is required)
+
+    Texture2D scarfy = LoadTexture("resources/scarfy.png");        // Texture loading
+
+    int frameWidth = scarfy.width/6;
+    int frameHeight = scarfy.height;
+
+    // Source rectangle (part of the texture to use for drawing)
+    Rectangle sourceRec = { 0.0f, 0.0f, (float)frameWidth, (float)frameHeight };
+
+    // Destination rectangle (screen rectangle where drawing part of texture)
+    Rectangle destRec = { screenWidth/2.0f, screenHeight/2.0f, frameWidth*2.0f, frameHeight*2.0f };
+
+    // Origin of the texture (rotation/scale point), it's relative to destination rectangle size
+    Vector2 origin = { (float)frameWidth, (float)frameHeight };
+
+    int rotation = 0;
+
+    SetTargetFPS(60);
+    //--------------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        rotation++;
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+
+            // NOTE: Using DrawTexturePro() we can easily rotate and scale the part of the texture we draw
+            // sourceRec defines the part of the texture we use for drawing
+            // destRec defines the rectangle where our texture part will fit (scaling it to fit)
+            // origin defines the point of the texture used as reference for rotation and scaling
+            // rotation defines the texture rotation (using origin as rotation point)
+            DrawTexturePro(scarfy, sourceRec, destRec, origin, (float)rotation, WHITE);
+
+            DrawLine((int)destRec.x, 0, (int)destRec.x, screenHeight, GRAY);
+            DrawLine(0, (int)destRec.y, screenWidth, (int)destRec.y, GRAY);
+
+            DrawText("(c) Scarfy sprite by Eiden Marsal", screenWidth - 200, screenHeight - 20, 10, GRAY);
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    UnloadTexture(scarfy);        // Texture unloading
+
+    CloseWindow();                // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}

OTRGui/libs/raylib/examples/textures/textures_to_image.c

@@ -0,0 +1,68 @@
+/*******************************************************************************************
+*
+*   raylib [textures] example - Retrieve image data from texture: LoadImageFromTexture()
+*
+*   NOTE: Images are loaded in CPU memory (RAM); textures are loaded in GPU memory (VRAM)
+*
+*   This example has been created using raylib 1.3 (www.raylib.com)
+*   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
+*
+*   Copyright (c) 2015 Ramon Santamaria (@raysan5)
+*
+********************************************************************************************/
+
+#include "raylib.h"
+
+int main(void)
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [textures] example - texture to image");
+
+    // NOTE: Textures MUST be loaded after Window initialization (OpenGL context is required)
+
+    Image image = LoadImage("resources/raylib_logo.png");  // Load image data into CPU memory (RAM)
+    Texture2D texture = LoadTextureFromImage(image);       // Image converted to texture, GPU memory (RAM -> VRAM)
+    UnloadImage(image);                                    // Unload image data from CPU memory (RAM)
+
+    image = LoadImageFromTexture(texture);                 // Load image from GPU texture (VRAM -> RAM)
+    UnloadTexture(texture);                                // Unload texture from GPU memory (VRAM)
+
+    texture = LoadTextureFromImage(image);                 // Recreate texture from retrieved image data (RAM -> VRAM)
+    UnloadImage(image);                                    // Unload retrieved image data from CPU memory (RAM)
+    //---------------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        // TODO: Update your variables here
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+
+            DrawTexture(texture, screenWidth/2 - texture.width/2, screenHeight/2 - texture.height/2, WHITE);
+
+            DrawText("this IS a texture loaded from an image!", 300, 370, 10, GRAY);
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    UnloadTexture(texture);       // Texture unloading
+
+    CloseWindow();                // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}