Move bunnymark example to another module

examples/textures/textures_bunnymark.c

@@ -0,0 +1,116 @@
+/*******************************************************************************************
+*
+*   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       100000    // 100K 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()
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [textures] example - bunnymark");
+
+    Texture2D texBunny = LoadTexture("resources/wabbit_alpha.png");
+
+    Bunny *bunnies = (Bunny *)malloc(MAX_BUNNIES*sizeof(Bunny));          // Bunnies array
+
+    int bunniesCount = 0;    // Bunnies counter
+
+    SetTargetFPS(60);
+    //--------------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        if (IsMouseButtonDown(MOUSE_LEFT_BUTTON))
+        {
+            // Create more bunnies
+            for (int i = 0; i < 100; i++)
+            {
+                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, bunnies[i].position.x, bunnies[i].position.y, bunnies[i].color);
+            }
+
+            DrawRectangle(0, 0, screenWidth, 40, BLACK);
+            DrawText(FormatText("bunnies: %i", bunniesCount), 120, 10, 20, GREEN);
+            DrawText(FormatText("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;
+}