126 lines
5.2 KiB
C
126 lines
5.2 KiB
C
/*******************************************************************************************
|
|
*
|
|
* raylib [textures] example - Bunnymark
|
|
*
|
|
* Example originally created with raylib 1.6, last time updated with raylib 2.5
|
|
*
|
|
* Example licensed under an unmodified zlib/libpng license, which is an OSI-certified,
|
|
* BSD-like license that allows static linking with closed source software
|
|
*
|
|
* Copyright (c) 2014-2023 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;
|
|
|
|
//------------------------------------------------------------------------------------
|
|
// Program main entry point
|
|
//------------------------------------------------------------------------------------
|
|
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;
|
|
}
|