Created
February 12, 2025 04:52
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Odin SDL3 Load Texture with stb_image
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| package sdl_tex | |
| import sdl "vendor:sdl3" | |
| import stbi "vendor:stb/image" | |
| window: ^sdl.Window | |
| renderer: ^sdl.Renderer | |
| should_close := false | |
| main :: proc() { | |
| if !sdl.Init(sdl.INIT_VIDEO) { | |
| sdl.Log("SDL Initialization failed: %s", sdl.GetError()) | |
| return | |
| } | |
| window = sdl.CreateWindow("SDL3 Load texture with stb_image", 1280, 800, nil) | |
| if window == nil { | |
| sdl.Log("Window creation failed: %s", sdl.GetError()) | |
| sdl.Quit() | |
| return | |
| } | |
| renderer = sdl.CreateRenderer(window, nil) | |
| if renderer == nil { | |
| sdl.Log("Renderer creation failed: %s", sdl.GetError()) | |
| sdl.DestroyWindow(window) | |
| sdl.Quit() | |
| return | |
| } | |
| texture := load_texture("odin.png", renderer) | |
| if texture == nil { | |
| sdl.Log("Failed to load texture") | |
| return | |
| } | |
| event: sdl.Event | |
| for !should_close { | |
| for sdl.PollEvent(&event) { | |
| #partial switch event.type { | |
| case .QUIT: | |
| should_close = true | |
| case .KEY_DOWN: | |
| #partial switch event.key.scancode { | |
| case .ESCAPE: | |
| should_close = true | |
| } | |
| } | |
| } | |
| sdl.SetRenderDrawColor(renderer, 0, 0, 0, 255) | |
| sdl.RenderClear(renderer) | |
| // set your source and destination rects as you need | |
| sdl.RenderTexture(renderer, texture, nil, nil) | |
| sdl.RenderPresent(renderer) | |
| } | |
| sdl.DestroyRenderer(renderer) | |
| sdl.DestroyWindow(window) | |
| sdl.Quit() | |
| } | |
| load_texture :: proc(filename: cstring, renderer: ^sdl.Renderer) -> ^sdl.Texture { | |
| width, height, channels: i32 | |
| // Load image using stb_image | |
| data := stbi.load(filename, &width, &height, &channels, 0) | |
| if data == nil { | |
| sdl.Log("Failed to load image: %s", filename) | |
| return nil | |
| } | |
| defer stbi.image_free(data) | |
| // create SDL texture | |
| texture := sdl.CreateTexture(renderer, .RGBA32, .STATIC, width, height) | |
| if texture == nil { | |
| sdl.Log("Failed to create texture: %s", sdl.GetError()) | |
| return nil | |
| } | |
| // Update texture with pixel data | |
| if !sdl.UpdateTexture(texture, nil, data, width * 4) { | |
| sdl.Log("Failed to update texture: %s", sdl.GetError()) | |
| sdl.DestroyTexture(texture) | |
| return nil | |
| } | |
| return texture | |
| } |
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