Added: ImageDrawRectangle()

Renamed SaveImageAs() to ExportImage() for consistency on what actually happens with data.

src/raylib.h

@@ -888,6 +888,7 @@ RLAPI Image LoadImage(const char *fileName);
 RLAPI Image LoadImageEx(Color *pixels, int width, int height);                                           // Load image from Color array data (RGBA - 32bit)
 RLAPI Image LoadImagePro(void *data, int width, int height, int format);                                 // Load image from raw data with parameters
 RLAPI Image LoadImageRaw(const char *fileName, int width, int height, int format, int headerSize);       // Load image from RAW file data
+RLAPI void ExportImage(const char *fileName, Image image);                                               // Export image as a PNG file
 RLAPI Texture2D LoadTexture(const char *fileName);                                                       // Load texture from file into GPU memory (VRAM)
 RLAPI Texture2D LoadTextureFromImage(Image image);                                                       // Load texture from image data
 RLAPI RenderTexture2D LoadRenderTexture(int width, int height);                                          // Load texture for rendering (framebuffer)
@@ -898,7 +899,7 @@ RLAPI Color *GetImageData(Image image);
 RLAPI int GetPixelDataSize(int width, int height, int format);                                           // Get pixel data size in bytes (image or texture)
 RLAPI Image GetTextureData(Texture2D texture);                                                           // Get pixel data from GPU texture and return an Image
 RLAPI void UpdateTexture(Texture2D texture, const void *pixels);                                         // Update GPU texture with new data
-RLAPI void SaveImageAs(const char *fileName, Image image);                                               // Save image to a PNG file
+
 
 // Image manipulation functions
 RLAPI Image ImageCopy(Image image);                                                                      // Create an image duplicate (useful for transformations)
@@ -916,6 +917,7 @@ RLAPI void ImageDither(Image *image, int rBpp, int gBpp, int bBpp, int aBpp);
 RLAPI Image ImageText(const char *text, int fontSize, Color color);                                      // Create an image from text (default font)
 RLAPI Image ImageTextEx(SpriteFont font, const char *text, float fontSize, int spacing, Color tint);     // Create an image from text (custom sprite font)
 RLAPI void ImageDraw(Image *dst, Image src, Rectangle srcRec, Rectangle dstRec);                         // Draw a source image within a destination image
+RLAPI void ImageDrawRectangle(Image *dst, Vector2 position, Rectangle rec, Color color);                 // Draw rectangle within an image
 RLAPI void ImageDrawText(Image *dst, Vector2 position, const char *text, int fontSize, Color color);     // Draw text (default font) within an image (destination)
 RLAPI void ImageDrawTextEx(Image *dst, Vector2 position, SpriteFont font, const char *text,
                            float fontSize, int spacing, Color color);                                    // Draw text (custom sprite font) within an image (destination)
@@ -1007,6 +1009,7 @@ RLAPI void UnloadModel(Model model);
 // Mesh loading/unloading functions
 RLAPI Mesh LoadMesh(const char *fileName);                                                              // Load mesh from file
 RLAPI void UnloadMesh(Mesh *mesh);                                                                      // Unload mesh from memory (RAM and/or VRAM)
+RLAPI void ExportMesh(const char *fileName, Mesh mesh);                                                 // Export mesh as an OBJ file
 
 // Mesh manipulation functions
 RLAPI BoundingBox MeshBoundingBox(Mesh mesh);                                                           // Compute mesh bounding box limits

src/textures.c

@@ -572,8 +572,8 @@ void UpdateTexture(Texture2D texture, const void *pixels)
     rlUpdateTexture(texture.id, texture.width, texture.height, texture.format, pixels);
 }
 
-// Save image to a PNG file
-void SaveImageAs(const char *fileName, Image image)
+// Export image as a PNG file
+void ExportImage(const char *fileName, Image image)
 {
 #if defined(PLATFORM_DESKTOP) || defined(PLATFORM_RPI)
     // NOTE: Getting Color array as RGBA unsigned char values
@@ -1360,6 +1360,7 @@ void ImageDraw(Image *dst, Image src, Rectangle srcRec, Rectangle dstRec)
             dstCol.r = ((srcCol.a*(srcCol.r - dstCol.r)) >> 8) + dstCol.r;
             dstCol.g = ((srcCol.a*(srcCol.g - dstCol.g)) >> 8) + dstCol.g;
             dstCol.b = ((srcCol.a*(srcCol.b - dstCol.b)) >> 8) + dstCol.b;
+            //dstCol.a = ((srcCol.a*(srcCol.a - dstCol.a)) >> 8) + dstCol.a;
             dstCol.a = srcCol.a;
 
             dstPixels[j*dst->width + i] = dstCol;
@@ -1465,6 +1466,18 @@ Image ImageTextEx(SpriteFont font, const char *text, float fontSize, int spacing
     return imText;
 }
 
+// Draw rectangle within an image
+void ImageDrawRectangle(Image *dst, Vector2 position, Rectangle rec, Color color)
+{
+    Image imRec = GenImageColor(rec.width, rec.height, color);
+    
+    Rectangle dstRec = { (int)position.x, (int)position.y, imRec.width, imRec.height };
+
+    ImageDraw(dst, imRec, rec, dstRec);
+    
+    UnloadImage(imRec);
+}
+
 // Draw text (default font) within an image (destination)
 void ImageDrawText(Image *dst, Vector2 position, const char *text, int fontSize, Color color)
 {