Viewports not working?

[ryu-sxp]

When I set a custom rectangle as a viewport Renderer.viewport returns the parameters of the default viewport (whole window).
Furthermore updating the viewport works only once. Normally SDL allows for drawing on multiple viewports in one frame

[ryu-sxp]

Here's an example program:

require "sdl2"

SDL2.init(SDL2::INIT_TIMER|SDL2::INIT_AUDIO|SDL2::INIT_VIDEO|
SDL2::INIT_EVENTS)

window = SDL2::Window.create("viewport test", SDL2::Window::POS_CENTERED,
SDL2::Window::POS_CENTERED,
640, 480, 0)

renderer = window.create_renderer(-1, 0)

view1 = SDL2::Rect[0, 0, 320, 400]
view2 = SDL2::Rect[320, 0, 320, 400]
view3 = SDL2::Rect[0, 400, 640, 80]

renderer.viewport = view1
renderer.draw_color = [255, 0, 0]
renderer.fill_rect SDL2::Rect[0, 0, 320, 400]

renderer.viewport = view2
renderer.draw_color = [0, 255, 0]
renderer.fill_rect SDL2::Rect[0, 0, 320, 400]

renderer.viewport = view3
renderer.draw_color = [0, 0, 255]
renderer.fill_rect SDL2::Rect[0, 0, 640, 80]

renderer.present

SDL2.delay 2000

[ohai]

Thank you for your report. Probably I have found a bug in Ruby/SDL2, and I will fix it soon.

[ohai]

Now I fix the problem and release ver 0.3.4 on rubygems. Please try it.

[ryu-sxp]

Thank you very much for fixing this so quickly! As far as I tested it works correctly now.

[Romain Tartière]

@ohai No tag for 0.3.4 in this repo 😉

[ohai]

Thanks for the comment, @smortex. I pushed 0.3.4.