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v/vlib/gg/testdata/remove_image_from_cache.vv
2022-04-15 18:34:15 +03:00

42 lines
876 B
V

module main
import gg
import sokol.gfx
[console]
fn main() {
mut context := gg.new_context(
frame_fn: frame
width: 500
height: 500
)
context.run()
}
fn frame(mut ctx gg.Context) {
ctx.begin()
id := ctx.new_streaming_image(ctx.width, ctx.height, 4, pixel_format: .rgba8)
mut img := ctx.get_cached_image_by_idx(id)
mut bytes := []u8{len: img.width * img.height * 4, cap: img.width * img.height * 4}
for y in 0 .. img.height {
for x in 0 .. img.width {
unsafe {
bytes[(x + img.width * y) * 4] = 100
bytes[(x + img.width * y) * 4 + 1] = 100
bytes[(x + img.width * y) * 4 + 2] = 100
bytes[(x + img.width * y) * 4 + 3] = 255
}
}
}
unsafe {
img.update_pixel_data(&bytes[0])
}
ctx.draw_image(0, 0, ctx.width, ctx.height, img)
ctx.remove_cached_image_by_idx(id)
ctx.end()
gfx.destroy_image(img.simg)
unsafe {
free(&bytes[0])
}
}