mirror of
https://github.com/tinygo-org/drivers.git
synced 2026-07-26 10:38:41 +00:00
Ayke van Laethem
f96a70915e
This has been optimized for working with SPI displays like the ST7789. By working directly in the native color format of the display, graphics operations can be much, _much_ faster. Also, this makes it easier to use a different color format like RGB444 simply by changing the generic type.
65 lines
1.7 KiB
Go
65 lines
1.7 KiB
Go
package pixel_test
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import (
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"image/color"
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"testing"
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"tinygo.org/x/drivers/pixel"
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)
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func TestImageRGB565BE(t *testing.T) {
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image := pixel.NewImage[pixel.RGB565BE](5, 3)
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if width, height := image.Size(); width != 5 && height != 3 {
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t.Errorf("image.Size(): expected 5, 3 but got %d, %d", width, height)
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}
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for _, c := range []color.RGBA{
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{R: 0xff, A: 0xff},
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{G: 0xff, A: 0xff},
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{B: 0xff, A: 0xff},
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{R: 0x10, A: 0xff},
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{G: 0x10, A: 0xff},
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{B: 0x10, A: 0xff},
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} {
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image.Set(4, 2, pixel.NewColor[pixel.RGB565BE](c.R, c.G, c.B))
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c2 := image.Get(4, 2).RGBA()
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if c2 != c {
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t.Errorf("failed to roundtrip color: expected %v but got %v", c, c2)
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}
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}
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}
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func TestImageRGB444BE(t *testing.T) {
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image := pixel.NewImage[pixel.RGB444BE](5, 3)
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if width, height := image.Size(); width != 5 && height != 3 {
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t.Errorf("image.Size(): expected 5, 3 but got %d, %d", width, height)
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}
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for _, c := range []color.RGBA{
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{R: 0xff, A: 0xff},
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{G: 0xff, A: 0xff},
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{B: 0xff, A: 0xff},
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{R: 0x11, A: 0xff},
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{G: 0x11, A: 0xff},
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{B: 0x11, A: 0xff},
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} {
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encoded := pixel.NewColor[pixel.RGB444BE](c.R, c.G, c.B)
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image.Set(0, 0, encoded)
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image.Set(0, 1, encoded)
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encoded2 := image.Get(0, 0)
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encoded3 := image.Get(0, 1)
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if encoded != encoded2 {
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t.Errorf("failed to roundtrip color %v: expected %d but got %d", c, encoded, encoded2)
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}
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if encoded != encoded3 {
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t.Errorf("failed to roundtrip color %v: expected %d but got %d", c, encoded, encoded3)
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}
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c2 := encoded2.RGBA()
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if c2 != c {
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t.Errorf("failed to roundtrip color: expected %v but got %v", c, c2)
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}
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c3 := encoded3.RGBA()
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if c3 != c {
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t.Errorf("failed to roundtrip color: expected %v but got %v", c, c3)
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}
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}
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}
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