raylib/examples/textures_mipmaps.c
2014-09-29 23:41:05 +02:00

66 lines
2.7 KiB
C

/*******************************************************************************************
*
* raylib [textures] example - Texture loading with mipmaps, mipmaps generation
*
* NOTE: On OpenGL 1.1, mipmaps are calculated 'manually', original image must be power-of-two
* On OpenGL 3.3 and ES2, mipmaps are generated automatically
*
* This example has been created using raylib 1.1 (www.raylib.com)
* raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
*
* Copyright (c) 2014 Ramon Santamaria (Ray San - raysan@raysanweb.com)
*
********************************************************************************************/
#include "raylib.h"
int main()
{
// Initialization
//--------------------------------------------------------------------------------------
int screenWidth = 800;
int screenHeight = 450;
InitWindow(screenWidth, screenHeight, "raylib [textures] example - texture mipmaps generation");
// NOTE: To generate mipmaps for an image, image must be loaded first and converted to texture
// with mipmaps option set to true on CreateTexture()
Image image = LoadImage("resources/raylib_logo.png"); // Load image to CPU memory (RAM)
Texture2D texture = CreateTexture(image, true); // Create texture and generate mipmaps
UnloadImage(image); // Once texture has been created, we can unload image data from RAM
//--------------------------------------------------------------------------------------
// Main game loop
while (!WindowShouldClose()) // Detect window close button or ESC key
{
// Update
//----------------------------------------------------------------------------------
// TODO: Update your variables here
//----------------------------------------------------------------------------------
// Draw
//----------------------------------------------------------------------------------
BeginDrawing();
ClearBackground(RAYWHITE);
DrawTexture(texture, screenWidth/2 - texture.width/2,
screenHeight/2 - texture.height/2 - 30, WHITE);
DrawText("this IS a texture with mipmaps! really!", 210, 360, 20, GRAY);
EndDrawing();
//----------------------------------------------------------------------------------
}
// De-Initialization
//--------------------------------------------------------------------------------------
UnloadTexture(texture); // Texture unloading
CloseWindow(); // Close window and OpenGL context
//--------------------------------------------------------------------------------------
return 0;
}