68 lines
3.0 KiB
C
68 lines
3.0 KiB
C
/*******************************************************************************************
|
|
*
|
|
* raylib [textures] example - Retrieve image data from texture: GetTextureData()
|
|
*
|
|
* NOTE: Images are loaded in CPU memory (RAM); textures are loaded in GPU memory (VRAM)
|
|
*
|
|
* This example has been created using raylib 1.3 (www.raylib.com)
|
|
* raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
|
|
*
|
|
* Copyright (c) 2015 Ramon Santamaria (@raysan5)
|
|
*
|
|
********************************************************************************************/
|
|
|
|
#include "raylib.h"
|
|
|
|
int main()
|
|
{
|
|
// Initialization
|
|
//--------------------------------------------------------------------------------------
|
|
int screenWidth = 800;
|
|
int screenHeight = 450;
|
|
|
|
InitWindow(screenWidth, screenHeight, "raylib [textures] example - texture to image");
|
|
|
|
// NOTE: Textures MUST be loaded after Window initialization (OpenGL context is required)
|
|
|
|
Image image = LoadImage("resources/raylib_logo.png"); // Load image data into CPU memory (RAM)
|
|
Texture2D texture = LoadTextureFromImage(image); // Image converted to texture, GPU memory (RAM -> VRAM)
|
|
UnloadImage(image); // Unload image data from CPU memory (RAM)
|
|
|
|
image = GetTextureData(texture); // Retrieve image data from GPU memory (VRAM -> RAM)
|
|
UnloadTexture(texture); // Unload texture from GPU memory (VRAM)
|
|
|
|
texture = LoadTextureFromImage(image); // Recreate texture from retrieved image data (RAM -> VRAM)
|
|
UnloadImage(image); // Unload retrieved image data from CPU memory (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, WHITE);
|
|
|
|
DrawText("this IS a texture loaded from an image!", 300, 370, 10, GRAY);
|
|
|
|
EndDrawing();
|
|
//----------------------------------------------------------------------------------
|
|
}
|
|
|
|
// De-Initialization
|
|
//--------------------------------------------------------------------------------------
|
|
UnloadTexture(texture); // Texture unloading
|
|
|
|
CloseWindow(); // Close window and OpenGL context
|
|
//--------------------------------------------------------------------------------------
|
|
|
|
return 0;
|
|
} |