Merge remote-tracking branch 'refs/remotes/raysan5/develop' into develop

examples/resources/shaders/standard.fs

@@ -8,12 +8,18 @@ in vec3 fragNormal;
 out vec4 finalColor;
 
 uniform sampler2D texture0;
+uniform sampler2D texture1;
+uniform sampler2D texture2;
 
+uniform vec4 colTint;
 uniform vec4 colAmbient;
 uniform vec4 colDiffuse;
 uniform vec4 colSpecular;
 uniform float glossiness;
 
+uniform int useNormal;
+uniform int useSpecular;
+
 uniform mat4 modelMatrix;
 uniform vec3 viewDir;
 
@@ -24,7 +30,7 @@ struct Light {
     vec3 direction;
     vec4 diffuse;
     float intensity;
-    float attenuation;
+    float radius;
     float coneAngle;
 };
 
@@ -32,27 +38,27 @@ const int maxLights = 8;
 uniform int lightsCount;
 uniform Light lights[maxLights];
 
-vec3 CalcPointLight(Light l, vec3 n, vec3 err">v)
+vec3 CalcPointLight(Light l, vec3 n, vec3 nf">v, float s)
 {
     vec3 surfacePos = vec3(modelMatrix*vec4(fragPosition, 1));
     vec3 surfaceToLight = l.position - surfacePos;
     
     // Diffuse shading
     float brightness = clamp(dot(n, surfaceToLight)/(length(surfaceToLight)*length(n)), 0, 1);
-    float diff = 1.0/dot(surfaceToLight/l.attenuation, surfaceToLight/l.attenuation)*brightness*l.intensity;
+    float diff = 1.0/dot(surfaceToLight/l.radius, surfaceToLight/l.radius)*brightness*l.intensity;
     
     // Specular shading
     float spec = 0.0;
     if (diff > 0.0)
     {
         vec3 h = normalize(-l.direction + v);
-        spec = pow(dot(n, h), 3 + glossiness);
+        spec = pow(dot(n, h), 3 + glossiness)*s;
     }
     
     return (diff*l.diffuse.rgb*colDiffuse.rgb + spec*colSpecular.rgb);
 }
 
-vec3 CalcDirectionalLight(Light l, vec3 n, vec3 err">v)
+vec3 CalcDirectionalLight(Light l, vec3 n, vec3 nf">v, float s)
 {
     vec3 lightDir = normalize(-l.direction);
     
@@ -64,14 +70,14 @@ vec3 CalcDirectionalLight(Light l, vec3 n, vec3 v)
     if (diff > 0.0)
     {
         vec3 h = normalize(lightDir + v);
-        spec = pow(dot(n, h), 3 + glossiness);
+        spec = pow(dot(n, h), 3 + glossiness)*s;
     }
     
     // Combine results
     return (diff*l.intensity*l.diffuse.rgb*colDiffuse.rgb + spec*colSpecular.rgb);
 }
 
-vec3 CalcSpotLight(Light l, vec3 n, vec3 err">v)
+vec3 CalcSpotLight(Light l, vec3 n, vec3 nf">v, float s)
 {
     vec3 surfacePos = vec3(modelMatrix*vec4(fragPosition, 1));
     vec3 lightToSurface = normalize(surfacePos - l.position);
@@ -95,7 +101,7 @@ vec3 CalcSpotLight(Light l, vec3 n, vec3 v)
     if (diffAttenuation > 0.0)
     {
         vec3 h = normalize(lightDir + v);
-        spec = pow(dot(n, h), 3 + glossiness);
+        spec = pow(dot(n, h), 3 + glossiness)*s;
     }
     
     return falloff*(diffAttenuation*l.diffuse.rgb + spec*colSpecular.rgb);
@@ -104,9 +110,10 @@ vec3 CalcSpotLight(Light l, vec3 n, vec3 v)
 void main()
 {
     // Calculate fragment normal in screen space
+    // NOTE: important to multiply model matrix by fragment normal to apply model transformation (rotation and scale)
     mat3 normalMatrix = transpose(inverse(mat3(modelMatrix)));
     vec3 normal = normalize(normalMatrix*fragNormal);
-   
+
     // Normalize normal and view direction vectors
     vec3 n = normalize(normal);
     vec3 v = normalize(viewDir);
@@ -115,6 +122,17 @@ void main()
     vec4 texelColor = texture(texture0, fragTexCoord);
     vec3 lighting = colAmbient.rgb;
     
+    // Calculate normal texture color fetching or set to maximum normal value by default
+    if(useNormal == 1)
+    {
+        n *= texture(texture1, fragTexCoord).rgb;
+        n = normalize(n);
+    }
+    
+    // Calculate specular texture color fetching or set to maximum specular value by default
+    float spec = 1.0;
+    if(useSpecular == 1) spec *= normalize(texture(texture2, fragTexCoord).r);
+    
     for (int i = 0; i < lightsCount; i++)
     {
         // Check if light is enabled
@@ -123,14 +141,14 @@ void main()
             // Calculate lighting based on light type
             switch (lights[i].type)
             {
-                case 0: lighting += CalcPointLight(lights[i], n, v); break;
-                case 1: lighting += CalcDirectionalLight(lights[i], n, v); break;
-                case 2: lighting += CalcSpotLight(lights[i], n, v); break;
+                case 0: lighting += CalcPointLight(lights[i], n, v, spec); break;
+                case 1: lighting += CalcDirectionalLight(lights[i], n, v, spec); break;
+                case 2: lighting += CalcSpotLight(lights[i], n, v, spec); break;
                 default: break;
             }
         }
     }
     
     // Calculate final fragment color
-    finalColor = vec4(texelColor.rgb*lighting, texelColor.a);
+    finalColor = vec4(texelColor.rgb*lighting*colTint.rgb, texelColor.a*colTint.a);
 }

examples/shaders_custom_uniform.c

@@ -89,6 +89,8 @@ int main()
                     DrawGrid(10, 1.0f);     // Draw a grid
 
                 End3dMode();
+                
+                DrawText("TEXT DRAWN IN RENDER TEXTURE", 200, 10, 30, RED);
             
             EndTextureMode();           // End drawing to texture (now we have a texture available for next passes)
             

examples/shaders_standard_lighting.c

@@ -22,8 +22,8 @@ int main()
 {
     // Initialization
     //--------------------------------------------------------------------------------------
-    int screenWidth = 800;
-    int screenHeight = 450;
+    int screenWidth = 1280;
+    int screenHeight = 720;
     
     SetConfigFlags(FLAG_MSAA_4X_HINT);      // Enable Multi Sampling Anti Aliasing 4x (if available)
 
@@ -36,13 +36,18 @@ int main()
     Model dwarf = LoadModel("resources/model/dwarf.obj");                   // Load OBJ model
 
     Material material = LoadStandardMaterial();
+    
     material.texDiffuse = LoadTexture("resources/model/dwarf_diffuse.png"); // Load model diffuse texture
+    material.texNormal = LoadTexture("resources/model/dwarf_normal.png"); // Load model normal texture
+    material.texSpecular = LoadTexture("resources/model/dwarf_specular.png"); // Load model specular texture
     material.colDiffuse = (Color){255, 255, 255, 255};
     material.colAmbient = (Color){0, 0, 10, 255};
     material.colSpecular = (Color){255, 255, 255, 255};
     material.glossiness = 50.0f;
     
     dwarf.material = material;      // Apply material to model
+    
+    Model dwarf2 = LoadModel("resources/model/dwarf.obj");                   // Load OBJ model
 
     Light spotLight = CreateLight(LIGHT_SPOT, (Vector3){3.0f, 5.0f, 2.0f}, (Color){255, 255, 255, 255});
     spotLight->target = (Vector3){0.0f, 0.0f, 0.0f};
@@ -58,10 +63,10 @@ int main()
     Light pointLight = CreateLight(LIGHT_POINT, (Vector3){0.0f, 4.0f, 5.0f}, (Color){255, 255, 255, 255});
     pointLight->intensity = 2.0f;
     pointLight->diffuse = (Color){100, 100, 255, 255};
-    pointLight->attenuation = 3.0f;
+    pointLight->radius = 3.0f;
 
     // Setup orbital camera
-    SetCameraMode(CAMERA_ORBITAL);          // Set a orbital camera mode
+    SetCameraMode(CAMERA_ORBITAL);          // Set an orbital camera mode
     SetCameraPosition(camera.position);     // Set internal camera position to match our camera position
     SetCameraTarget(camera.target);         // Set internal camera target to match our camera target
 
@@ -83,7 +88,7 @@ int main()
             ClearBackground(RAYWHITE);
 
             Begin3dMode(camera);
-
+                
                 DrawModel(dwarf, position, 2.0f, WHITE);   // Draw 3d model with texture
                 
                 DrawLights();   // Draw all created lights in 3D world
@@ -93,7 +98,7 @@ int main()
             End3dMode();
             
             DrawText("(c) Dwarf 3D model by David Moreno", screenWidth - 200, screenHeight - 20, 10, GRAY);
-
+            
             DrawFPS(10, 10);
 
         EndDrawing();

src/core.c

@@ -147,6 +147,7 @@ static bool windowMinimized = false;
 static struct android_app *app;                 // Android activity
 static struct android_poll_source *source;      // Android events polling source
 static int ident, events;                       // Android ALooper_pollAll() variables
+static const char *internalDataPath;            // Android internal data path to write data (/data/data/<package>/files)
 
 static bool windowReady = false;                // Used to detect display initialization
 static bool appEnabled = true;                  // Used to detec if app is active
@@ -363,6 +364,7 @@ void InitWindow(int width, int height, struct android_app *state)
     screenHeight = height;
 
     app = state;
+    internalDataPath = app->activity->internalDataPath;
 
     // Set desired windows flags before initializing anything
     ANativeActivity_setWindowFlags(app->activity, AWINDOW_FLAG_FULLSCREEN, 0);  //AWINDOW_FLAG_SCALED, AWINDOW_FLAG_DITHER
@@ -562,9 +564,8 @@ void Begin2dMode(Camera2D camera)
     Matrix matOrigin = MatrixTranslate(-camera.target.x, -camera.target.y, 0.0f);
     Matrix matRotation = MatrixRotate((Vector3){ 0.0f, 0.0f, 1.0f }, camera.rotation*DEG2RAD);
     Matrix matScale = MatrixScale(camera.zoom, camera.zoom, 1.0f);
-    
     Matrix matTranslation = MatrixTranslate(camera.offset.x + camera.target.x, camera.offset.y + camera.target.y, 0.0f);
-
+    
     Matrix matTransform = MatrixMultiply(MatrixMultiply(matOrigin, MatrixMultiply(matScale, matRotation)), matTranslation);
     
     rlMultMatrixf(MatrixToFloat(matTransform));
@@ -627,11 +628,24 @@ void BeginTextureMode(RenderTexture2D target)
 {
     rlglDraw();                         // Draw Buffers (Only OpenGL 3+ and ES2)
 
-    rlEnableRenderTexture(target.id);
-    
+    rlEnableRenderTexture(target.id);   // Enable render target
+
     rlClearScreenBuffers();             // Clear render texture buffers
+    
+    // Set viewport to framebuffer size
+    rlViewport(0, 0, target.texture.width, target.texture.height); 
+    
+    rlMatrixMode(RL_PROJECTION);        // Switch to PROJECTION matrix
+    rlLoadIdentity();                   // Reset current matrix (PROJECTION)
+
+    // Set orthographic projection to current framebuffer size
+    // NOTE: Configured top-left corner as (0, 0)
+    rlOrtho(0, target.texture.width, target.texture.height, 0, 0.0f, 1.0f);        
 
+    rlMatrixMode(RL_MODELVIEW);         // Switch back to MODELVIEW matrix
     rlLoadIdentity();                   // Reset current matrix (MODELVIEW)
+
+    //rlScalef(0.0f, -1.0f, 0.0f);      // Flip Y-drawing (?)
 }
 
 // Ends drawing to render texture
@@ -639,7 +653,21 @@ void EndTextureMode(void)
 {
     rlglDraw();                         // Draw Buffers (Only OpenGL 3+ and ES2)
 
-    rlDisableRenderTexture();
+    rlDisableRenderTexture();           // Disable render target
+
+    // Set viewport to default framebuffer size (screen size)
+    // TODO: consider possible viewport offsets
+    rlViewport(0, 0, GetScreenWidth(), GetScreenHeight());
+    
+    rlMatrixMode(RL_PROJECTION);        // Switch to PROJECTION matrix
+    rlLoadIdentity();                   // Reset current matrix (PROJECTION)
+    
+    // Set orthographic projection to current framebuffer size
+    // NOTE: Configured top-left corner as (0, 0)
+    rlOrtho(0, GetScreenWidth(), GetScreenHeight(), 0, 0.0f, 1.0f);
+
+    rlMatrixMode(RL_MODELVIEW);         // Switch back to MODELVIEW matrix
+    rlLoadIdentity();                   // Reset current matrix (MODELVIEW)
 }
 
 // Set target FPS for the game
@@ -812,12 +840,21 @@ void ClearDroppedFiles(void)
 void StorageSaveValue(int position, int value)
 {
     FILE *storageFile = NULL;
+    
+    char path[128];
+#if defined(PLATFORM_ANDROID)
+    strcpy(path, internalDataPath);
+    strcat(path, "/");
+    strcat(path, STORAGE_FILENAME);
+#else
+    strcpy(path, STORAGE_FILENAME);
+#endif
 
     // Try open existing file to append data
-    storageFile = fopen(STORAGE_FILENAME, "rb+");      
+    storageFile = fopen(path, "rb+");      
 
     // If file doesn't exist, create a new storage data file
-    if (!storageFile) storageFile = fopen(STORAGE_FILENAME, "wb");
+    if (!storageFile) storageFile = fopen(path, "wb");
 
     if (!storageFile) TraceLog(WARNING, "Storage data file could not be created");
     else
@@ -844,8 +881,17 @@ int StorageLoadValue(int position)
 {
     int value = 0;
     
+    char path[128];
+#if defined(PLATFORM_ANDROID)
+    strcpy(path, internalDataPath);
+    strcat(path, "/");
+    strcat(path, STORAGE_FILENAME);
+#else
+    strcpy(path, STORAGE_FILENAME);
+#endif
+    
     // Try open existing file to append data
-    FILE *storageFile = fopen(STORAGE_FILENAME, "rb");      
+    FILE *storageFile = fopen(path, "rb");      
 
     if (!storageFile) TraceLog(WARNING, "Storage data file could not be found");
     else

src/models.c

@@ -75,6 +75,25 @@ void Draw3DLine(Vector3 startPos, Vector3 endPos, Color color)
     rlEnd();
 }
 
+// Draw a circle in 3D world space
+void Draw3DCircle(Vector3 center, float radius, float rotationAngle, Vector3 rotation, Color color)
+{
+    rlPushMatrix();
+        rlTranslatef(center.x, center.y, center.z);
+        rlRotatef(rotationAngle, rotation.x, rotation.y, rotation.z);
+        
+        rlBegin(RL_LINES);
+            for (int i = 0; i < 360; i += 10)
+            {
+                rlColor4ub(color.r, color.g, color.b, color.a);
+                
+                rlVertex3f(sin(DEG2RAD*i)*radius, cos(DEG2RAD*i)*radius, 0.0f);
+                rlVertex3f(sin(DEG2RAD*(i + 10)) * radius, cos(DEG2RAD*(i + 10)) * radius, 0.0f);
+            }
+        rlEnd();
+    rlPopMatrix();
+}
+
 // Draw cube
 // NOTE: Cube position is the center position
 void DrawCube(Vector3 position, float width, float height, float length, Color color)
@@ -732,12 +751,12 @@ Material LoadDefaultMaterial(void)
     //material.texNormal;           // NOTE: By default, not set
     //material.texSpecular;         // NOTE: By default, not set
     
+    material.colTint = WHITE;       // Tint color
     material.colDiffuse = WHITE;    // Diffuse color
     material.colAmbient = WHITE;    // Ambient color
     material.colSpecular = WHITE;   // Specular color
     
     material.glossiness = 100.0f;   // Glossiness level
-    material.normalDepth = 1.0f;    // Normal map depth
     
     return material;
 }
@@ -1250,7 +1269,7 @@ void DrawModelEx(Model model, Vector3 position, Vector3 rotationAxis, float rota
     //Matrix matModel = MatrixMultiply(model.transform, matTransform);    // Transform to world-space coordinates
     
     model.transform = MatrixMultiply(MatrixMultiply(matScale, matRotation), matTranslation);
-    o">// model.material.colDiffuse = tint;
+    model.material.colTint = tint;
     
     rlglDrawMesh(model.mesh, model.material, model.transform);
 }

src/raylib.h

@@ -414,12 +414,12 @@ typedef struct Material {
     Texture2D texNormal;        // Normal texture   (binded to shader mapTexture1Loc)
     Texture2D texSpecular;      // Specular texture (binded to shader mapTexture2Loc)
     
+    Color colTint;              // Tint color
     Color colDiffuse;           // Diffuse color
     Color colAmbient;           // Ambient color
     Color colSpecular;          // Specular color
     
     float glossiness;           // Glossiness level (Ranges from 0 to 1000)
-    float normalDepth;          // Normal map depth
 } Material;
 
 // Model type
@@ -437,7 +437,7 @@ typedef struct LightData {
     
     Vector3 position;
     Vector3 target;     // Used on LIGHT_DIRECTIONAL and LIGHT_SPOT (cone direction target)
-    float attenuation;  // Lost of light intensity with distance (world distance)
+    float radius;       // Lost of light intensity with distance (world distance)
     
     Color diffuse;      // Light color
     float intensity;    // Light intensity level
@@ -803,6 +803,7 @@ const char *SubText(const char *text, int position, int length);
 // Basic 3d Shapes Drawing Functions (Module: models)
 //------------------------------------------------------------------------------------
 void Draw3DLine(Vector3 startPos, Vector3 endPos, Color color);                                    // Draw a line in 3D world space
+void Draw3DCircle(Vector3 center, float radius, float rotationAngle, Vector3 rotation, Color color);    // Draw a circle in 3D world space
 void DrawCube(Vector3 position, float width, float height, float lenght, Color color);             // Draw cube
 void DrawCubeV(Vector3 position, Vector3 size, Color color);                                       // Draw cube (Vector version)
 void DrawCubeWires(Vector3 position, float width, float height, float lenght, Color color);        // Draw cube wires

src/rlgl.c

@@ -204,8 +204,8 @@ static bool texCompPVRTSupported = false;    // PVR texture compression support
 static bool texCompASTCSupported = false;    // ASTC texture compression support
 
 // Lighting data
-static Light lights[MAX_LIGHTS];              // Lights pool
-static int lightsCount;                       // Counts current enabled physic objects
+static Light lights[MAX_LIGHTS];             // Lights pool
+static int lightsCount;                      // Counts current enabled physic objects
 #endif
 
 // Compressed textures support flags
@@ -404,6 +404,12 @@ void rlOrtho(double left, double right, double bottom, double top, double near,
 
 #endif
 
+// Set the viewport area (trasnformation from normalized device coordinates to window coordinates)
+void rlViewport(int x, int y, int width, int height)
+{
+    glViewport(x, y, width, height);
+}
+
 //----------------------------------------------------------------------------------
 // Module Functions Definition - Vertex level operations
 //----------------------------------------------------------------------------------
@@ -725,17 +731,25 @@ void rlDisableTexture(void)
 #endif
 }
 
+// Enable rendering to texture (fbo)
 void rlEnableRenderTexture(unsigned int id)
 {
 #if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2)
     glBindFramebuffer(GL_FRAMEBUFFER, id);
+
+    //glDisable(GL_CULL_FACE);    // Allow double side drawing for texture flipping
+    //glCullFace(GL_FRONT);
 #endif
 }
 
+// Disable rendering to texture
 void rlDisableRenderTexture(void)
 {
 #if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2)
     glBindFramebuffer(GL_FRAMEBUFFER, 0);
+
+    //glEnable(GL_CULL_FACE);
+    //glCullFace(GL_BACK);
 #endif
 }
 
@@ -1779,6 +1793,9 @@ void rlglDrawMesh(Mesh mesh, Material material, Matrix transform)
         // Setup shader uniforms for lights
         SetShaderLights(material.shader);
         
+        // Upload to shader material.colSpecular
+        glUniform4f(glGetUniformLocation(material.shader.id, "colTint"), (float)material.colTint.r/255, (float)material.colTint.g/255, (float)material.colTint.b/255, (float)material.colTint.a/255);
+        
         // Upload to shader material.colAmbient
         glUniform4f(glGetUniformLocation(material.shader.id, "colAmbient"), (float)material.colAmbient.r/255, (float)material.colAmbient.g/255, (float)material.colAmbient.b/255, (float)material.colAmbient.a/255);
         
@@ -1796,16 +1813,19 @@ void rlglDrawMesh(Mesh mesh, Material material, Matrix transform)
     
     if ((material.texNormal.id != 0) && (material.shader.mapTexture1Loc != -1))
     {
+        // Upload to shader specular map flag
+        glUniform1i(glGetUniformLocation(material.shader.id, "useNormal"), 1);
+        
         glActiveTexture(GL_TEXTURE1);
         glBindTexture(GL_TEXTURE_2D, material.texNormal.id);
         glUniform1i(material.shader.mapTexture1Loc, 1);     // Normal texture fits in active texture unit 1
-        
-        // TODO: Upload to shader normalDepth
-        //glUniform1f(???, material.normalDepth);
     }
     
     if ((material.texSpecular.id != 0) && (material.shader.mapTexture2Loc != -1))
     {
+        // Upload to shader specular map flag
+        glUniform1i(glGetUniformLocation(material.shader.id, "useSpecular"), 1);
+        
         glActiveTexture(GL_TEXTURE2);
         glBindTexture(GL_TEXTURE_2D, material.texSpecular.id);
         glUniform1i(material.shader.mapTexture2Loc, 2);    // Specular texture fits in active texture unit 2
@@ -2279,7 +2299,13 @@ void DrawLights(void)
     {
         switch (lights[i]->type)
         {
-            case LIGHT_POINT: DrawSphereWires(lights[i]->position, 0.3f*lights[i]->intensity, 4, 8, (lights[i]->enabled ? lights[i]->diffuse : BLACK)); break;
+            case LIGHT_POINT:
+            {
+                DrawSphereWires(lights[i]->position, 0.3f*lights[i]->intensity, 4, 8, (lights[i]->enabled ? lights[i]->diffuse : BLACK));
+                Draw3DCircle(lights[i]->position, lights[i]->radius, 0.0f, (Vector3){ 0, 0, 0 }, (lights[i]->enabled ? lights[i]->diffuse : BLACK));
+                Draw3DCircle(lights[i]->position, lights[i]->radius, 90.0f, (Vector3){ 1, 0, 0 }, (lights[i]->enabled ? lights[i]->diffuse : BLACK));
+                Draw3DCircle(lights[i]->position, lights[i]->radius, 90.0f, (Vector3){ 0, 1, 0 }, (lights[i]->enabled ? lights[i]->diffuse : BLACK));
+            } break;
             case LIGHT_DIRECTIONAL:
             {                
                 Draw3DLine(lights[i]->position, lights[i]->target, (lights[i]->enabled ? lights[i]->diffuse : BLACK));
@@ -2539,7 +2565,7 @@ static Shader LoadDefaultShader(void)
 // Load standard shader
 // NOTE: This shader supports: 
 //      - Up to 3 different maps: diffuse, normal, specular
-//      - Material properties: colAmbient, colDiffuse, colSpecular, glossiness, normalDepth
+//      - Material properties: colAmbient, colDiffuse, colSpecular, glossiness
 //      - Up to 8 lights: Point, Directional or Spot
 static Shader LoadStandardShader(void)
 {
@@ -3091,9 +3117,9 @@ static void SetShaderLights(Shader shader)
                 locPoint = GetShaderLocation(shader, locName);
                 glUniform3f(locPoint, lights[i]->position.x, lights[i]->position.y, lights[i]->position.z);
                 
-                memcpy(&locName[10], "attenuation\0", strlen("attenuation\0"));
+                memcpy(&locName[10], "radius\0", strlen("radius\0") + 2);
                 locPoint = GetShaderLocation(shader, locName);
-                glUniform1f(locPoint, lights[i]->attenuation);
+                glUniform1f(locPoint, lights[i]->radius);
             } break;
             case LIGHT_DIRECTIONAL:
             {

src/rlgl.h

@@ -202,12 +202,12 @@ typedef enum { OPENGL_11 = 1, OPENGL_33, OPENGL_ES_20 } GlVersion;
         Texture2D texNormal;        // Normal texture
         Texture2D texSpecular;      // Specular texture
         
+        Color colTint;              // Tint color
         Color colDiffuse;           // Diffuse color
         Color colAmbient;           // Ambient color
         Color colSpecular;          // Specular color
         
         float glossiness;           // Glossiness level (Ranges from 0 to 1000)
-        float normalDepth;          // Normal map depth
     } Material;
     
     // Light type
@@ -218,7 +218,7 @@ typedef enum { OPENGL_11 = 1, OPENGL_33, OPENGL_ES_20 } GlVersion;
         
         Vector3 position;
         Vector3 target;     // Used on LIGHT_DIRECTIONAL and LIGHT_SPOT (cone direction target)
-        float attenuation;  // Lost of light intensity with distance (world distance)
+        float radius;       // Lost of light intensity with distance (world distance)
         
         Color diffuse;      // Use Vector3 diffuse
         float intensity;
@@ -247,6 +247,7 @@ void rlScalef(float x, float y, float z);       // Multiply the current matrix b
 void rlMultMatrixf(float *mat);                 // Multiply the current matrix by another matrix
 void rlFrustum(double left, double right, double bottom, double top, double near, double far);
 void rlOrtho(double left, double right, double bottom, double top, double near, double far);
+void rlViewport(int x, int y, int width, int height); // Set the viewport area
 
 //------------------------------------------------------------------------------------
 // Functions Declaration - Vertex level operations

src/textures.c

@@ -1385,10 +1385,6 @@ void DrawTextureEx(Texture2D texture, Vector2 position, float rotation, float sc
 void DrawTextureRec(Texture2D texture, Rectangle sourceRec, Vector2 position, Color tint)
 {
     Rectangle destRec = { (int)position.x, (int)position.y, abs(sourceRec.width), abs(sourceRec.height) };
-    
-    if (sourceRec.width < 0) sourceRec.x -= sourceRec.width;
-    if (sourceRec.height < 0) sourceRec.y -= sourceRec.height;
-    
     Vector2 origin = { 0, 0 };
 
     DrawTexturePro(texture, sourceRec, destRec, origin, 0.0f, tint);
@@ -1398,6 +1394,9 @@ void DrawTextureRec(Texture2D texture, Rectangle sourceRec, Vector2 position, Co
 // NOTE: origin is relative to destination rectangle size
 void DrawTexturePro(Texture2D texture, Rectangle sourceRec, Rectangle destRec, Vector2 origin, float rotation, Color tint)
 {
+    if (sourceRec.width < 0) sourceRec.x -= sourceRec.width;
+    if (sourceRec.height < 0) sourceRec.y -= sourceRec.height;
+    
     rlEnableTexture(texture.id);
 
     rlPushMatrix();

src/utils.c

@@ -247,7 +247,7 @@ FILE *android_fopen(const char *fileName, const char *mode)
 
     AAsset *asset = AAssetManager_open(assetManager, fileName, 0);
 
-    if(!asset) return NULL;
+    if (!asset) return NULL;
 
     return funopen(asset, android_read, android_write, android_seek, android_close);
 }