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60 lines
2.8 KiB
60 lines
2.8 KiB
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--
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-- raylib [textures] example - Retrieve image data from texture: GetTextureData()
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--
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-- NOTE: Images are loaded in CPU memory (RAM) textures are loaded in GPU memory (VRAM)
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--
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-- This example has been created using raylib 1.6 (www.raylib.com)
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-- raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
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--
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-- Copyright (c) 2014-2016 Ramon Santamaria (@raysan5)
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--
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-- Initialization
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local screenWidth = 800
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local screenHeight = 450
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InitWindow(screenWidth, screenHeight, "raylib [textures] example - texture to image")
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-- NOTE: Textures MUST be loaded after Window initialization (OpenGL context is required)
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local image = LoadImage("resources/raylib_logo.png") -- Load image data into CPU memory (RAM)
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local texture = LoadTextureFromImage(image) -- Image converted to texture, GPU memory (RAM -> VRAM)
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UnloadImage(image) -- Unload image data from CPU memory (RAM)
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image = GetTextureData(texture) -- Retrieve image data from GPU memory (VRAM -> RAM)
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UnloadTexture(texture) -- Unload texture from GPU memory (VRAM)
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texture = LoadTextureFromImage(image) -- Recreate texture from retrieved image data (RAM -> VRAM)
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UnloadImage(image) -- Unload retrieved image data from CPU memory (RAM)
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-- Main game loop
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while not WindowShouldClose() do -- Detect window close button or ESC key
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-- Update
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-- TODO: Update your variables here
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-- Draw
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BeginDrawing()
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ClearBackground(RAYWHITE)
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DrawTexture(texture, screenWidth/2 - texture.width/2, screenHeight/2 - texture.height/2, WHITE)
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DrawText("this IS a texture loaded from an image!", 300, 370, 10, GRAY)
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EndDrawing()
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end
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-- De-Initialization
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UnloadTexture(texture) -- Texture unloading
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CloseWindow() -- Close window and OpenGL context
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