Reviewed some examples to work on RPI

examples/models/models_mesh_picking.c

@@ -25,14 +25,14 @@ int main()
     InitWindow(screenWidth, screenHeight, "raylib [models] example - mesh picking");
 
     // Define the camera to look into our 3d world
-    Camera camera;
+    Camera camera = { 0 };
     camera.position = (Vector3){ 20.0f, 20.0f, 20.0f };  // Camera position
     camera.target = (Vector3){ 0.0f, 8.0f, 0.0f };      // Camera looking at point
     camera.up = (Vector3){ 0.0f, 1.6f, 0.0f };          // Camera up vector (rotation towards target)
     camera.fovy = 45.0f;                                // Camera field-of-view Y
     camera.type = CAMERA_PERSPECTIVE;                   // Camera mode type
 
-    Ray ray;        // Picking ray
+    Ray ray = { 0 };        // Picking ray
     
     Model tower = LoadModel("resources/models/turret.obj");                 // Load OBJ model
     Texture2D texture = LoadTexture("resources/models/turret_diffuse.png"); // Load model texture
@@ -62,7 +62,7 @@ int main()
         UpdateCamera(&camera);          // Update camera
         
         // Display information about closest hit
-        RayHitInfo nearestHit;
+        RayHitInfo nearestHit = { 0 };
         char *hitObjectName = "None";
         nearestHit.distance = FLT_MAX;
         nearestHit.hit = false;
@@ -95,7 +95,7 @@ int main()
         } 
         else hitTriangle = false;
 
-        RayHitInfo meshHitInfo;
+        RayHitInfo meshHitInfo = { 0 };
 
         // Check ray collision against bounding box first, before trying the full ray-mesh test
         if (CheckCollisionRayBox(ray, towerBBox)) 
@@ -113,7 +113,9 @@ int main()
                 hitObjectName = "Mesh";
             }
             
-        } hitMeshBBox = false; 
+        } 
+        
+        hitMeshBBox = false; 
         //----------------------------------------------------------------------------------
         
         // Draw

examples/shaders/shaders_custom_uniform.c

@@ -18,6 +18,12 @@
 
 #include "raylib.h"
 
+#if defined(PLATFORM_DESKTOP)
+    #define GLSL_VERSION            330
+#else   // PLATFORM_RPI, PLATFORM_ANDROID, PLATFORM_WEB
+    #define GLSL_VERSION            100
+#endif
+
 int main()
 {
     // Initialization
@@ -43,8 +49,9 @@ int main()
 
     Vector3 position = { 0.0f, 0.0f, 0.0f };                                    // Set model position
     
-    Shader shader = LoadShader("resources/shaders/glsl330/base.vs", 
+    // Load postprocessing shader
-                               "resources/shaders/glsl330/swirl.fs");       // Load postpro shader
+    // NOTE: Defining 0 (NULL) for vertex shader forces usage of internal default vertex shader
+    Shader shader = LoadShader(0, FormatText("resources/shaders/glsl%i/swirl.fs", GLSL_VERSION));
     
     // Get variable (uniform) location on the shader to connect with the program
     // NOTE: If uniform variable could not be found in the shader, function returns -1

examples/shaders/shaders_model_shader.c

@@ -18,6 +18,12 @@
 
 #include "raylib.h"
 
+#if defined(PLATFORM_DESKTOP)
+    #define GLSL_VERSION            330
+#else   // PLATFORM_RPI, PLATFORM_ANDROID, PLATFORM_WEB
+    #define GLSL_VERSION            100
+#endif
+
 int main()
 {
     // Initialization
@@ -39,8 +45,10 @@ int main()
 
     Model model = LoadModel("resources/models/watermill.obj");                   // Load OBJ model
     Texture2D texture = LoadTexture("resources/models/watermill_diffuse.png");   // Load model texture
-    Shader shader = LoadShader("resources/shaders/glsl330/base.vs", 
+    
-                               "resources/shaders/glsl330/grayscale.fs");   // Load model shader
+    // Load shader for model
+    // NOTE: Defining 0 (NULL) for vertex shader forces usage of internal default vertex shader
+    Shader shader = LoadShader(0, FormatText("resources/shaders/glsl%i/grayscale.fs", GLSL_VERSION));
 
     model.material.shader = shader;                     // Set shader effect to 3d model
     model.material.maps[MAP_DIFFUSE].texture = texture; // Bind texture to model

examples/shaders/shaders_shapes_textures.c

@@ -18,6 +18,12 @@
 
 #include "raylib.h"
 
+#if defined(PLATFORM_DESKTOP)
+    #define GLSL_VERSION            330
+#else   // PLATFORM_RPI, PLATFORM_ANDROID, PLATFORM_WEB
+    #define GLSL_VERSION            100
+#endif
+
 int main()
 {
     // Initialization
@@ -29,9 +35,10 @@ int main()
     
     Texture2D fudesumi = LoadTexture("resources/fudesumi.png");
 
-    // NOTE: Using GLSL 330 shader version, on OpenGL ES 2.0 use GLSL 100 shader version 
+    // Load shader to be used on some parts drawing
-    Shader shader = LoadShader("resources/shaders/glsl330/base.vs", 
+    // NOTE 1: Using GLSL 330 shader version, on OpenGL ES 2.0 use GLSL 100 shader version 
-                               "resources/shaders/glsl330/grayscale.fs");
+    // NOTE 2: Defining 0 (NULL) for vertex shader forces usage of internal default vertex shader
+    Shader shader = LoadShader(0, FormatText("resources/shaders/glsl%i/grayscale.fs", GLSL_VERSION));
 
     SetTargetFPS(60);
     //--------------------------------------------------------------------------------------