I am using pygame.font.Font.render() to render some text. I'd like the text to be translucent, ie have an alpha value other than 255, so I tried passing a color argument with an alpha value (eg (255, 0, 0, 150)) as the color argument for pygame.font.Font.render() but it didn't have any effect. I also tried using pygame.Surface.convert_alpha() on the resulting Surface object, but that didn't do anything either. Any ideas? 解决方案 When using the pygame.font module, the alpha channel of the text color is not taken into account when rendering a text, but see pygame.font.Font.render:Antialiased images are rendered to 24-bit RGB images. If the background is transparent a pixel alpha will be included.and pygame.Surface.set_alphaChanged in pygame 2.0: per-surface alpha can be combined with per-pixel alpha.Hence it is completely sufficient to set the transparency after rendering the text with set_alpha. This even works for anti-aliased text:font = pygame.font.SysFont(None, 150)text_surf = font.render('test text', True, (255, 0, 0))text_surf.set_alpha(127)window.blit(text_surf, (x, y))Minimal example:import pygamepygame.init()window = pygame.display.set_mode((500, 300))clock = pygame.time.Clock()font = pygame.font.SysFont(None, 150)text_surf = font.render('test text', True, (255, 0, 0))text_surf.set_alpha(127)background = pygame.Surface(window.get_size())ts, w, h, c1, c2 = 50, *window.get_size(), (128, 128, 128), (64, 64, 64)tiles = [((x*ts, y*ts, ts, ts), c1 if (x+y) % 2 == 0 else c2) for x in range((w+ts-1)//ts) for y in range((h+ts-1)//ts)]for rect, color in tiles: pygame.draw.rect(background, color, rect)run = Truewhile run: clock.tick(60) for event in pygame.event.get(): if event.type == pygame.QUIT: run = False window.blit(background, (0, 0)) window.blit(text_surf, text_surf.get_rect(center = window.get_rect().center)) pygame.display.flip()pygame.quit()exit()By using the pygame.freetype module, you can use a transparent color directly when creating a text surface:ft_font = pygame.freetype.SysFont('Times New Roman', 150)text_surf2, text_rect2 = ft_font.render('test text', (255, 0, 0, 128))window.blit(text_surf2, (x, y))Or if you are rendering the text directly onto a surface:ft_font = pygame.freetype.SysFont('Times New Roman', 150)ft_font.render_to(window, (x, y), 'test text', (255, 0, 0, 128))Minimal example:import pygameimport pygame.freetypepygame.init()window = pygame.display.set_mode((500, 300))clock = pygame.time.Clock()ft_font = pygame.freetype.SysFont('Times New Roman', 150)text_surf2, text_rect2 = ft_font.render('test text', (255, 0, 0, 128))background = pygame.Surface(window.get_size())ts, w, h, c1, c2 = 50, *window.get_size(), (128, 128, 128), (64, 64, 64)tiles = [((x*ts, y*ts, ts, ts), c1 if (x+y) % 2 == 0 else c2) for x in range((w+ts-1)//ts) for y in range((h+ts-1)//ts)]for rect, color in tiles: pygame.draw.rect(background, color, rect)run = Truewhile run: clock.tick(60) for event in pygame.event.get(): if event.type == pygame.QUIT: run = False window.blit(background, (0, 0)) text_rect = ft_font.get_rect('test text') text_rect.center = (window.get_width() // 2, window.get_height() // 2 - 70) ft_font.render_to(window, text_rect.topleft, 'test text', (255, 0, 0, 128)) text_rect2.center = (window.get_width() // 2, window.get_height() // 2 + 70) window.blit(text_surf2, text_rect2) pygame.display.flip()pygame.quit()exit()See also Text and font 这篇关于如何在 PyGame 中使用 alpha 通道渲染透明文本?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！ 上岸，阿里云！
