Dmitry Sergeev
52 lines
1.8 KiB
Go
52 lines
1.8 KiB
Go
package generator
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import (
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"path/filepath"
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"testing"
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)
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func TestWGPUMoveSquare(t *testing.T) {
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const width, height = 1920, 1080
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g, err := NewWGPUGenerator(width, height, filepath.Join("..", "..", "kernels", "dynamic", "smpteBars.wgsl"))
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if err != nil {
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t.Fatalf("init: %v", err)
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}
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defer g.Close()
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buf := make([]byte, width*height*8/3)
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// square center x=960 sits on the green bar (534/253/207):
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// inverted -> Y=1004-534=470, Cb=1024-253=771, Cr=1024-207=817
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const invY, invCb, invCr = 470, 771, 817
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const greenY = 534 // bar 3 covers x in [823,1098)
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// tick 0: offset = 0, square centered at (960,540), half = 75
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if err := g.GenerateFrame(buf, 0); err != nil {
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t.Fatalf("tick 0: %v", err)
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}
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if y, cb, cr := sampleV210(buf, width, 960, 540); y != invY || cb != invCb || cr != invCr {
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t.Fatalf("tick 0 center: got %d/%d/%d, want inverted green 470/771/817", y, cb, cr)
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}
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if y, _, _ := sampleV210(buf, width, 860, 540); y != greenY {
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t.Fatalf("tick 0 left of square: Y=%d, want green %d", y, greenY)
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}
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// amplitude = centerX - half = 885: tick 79 (sin~1) puts the square at
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// the far right, x in [1770,1920), over the gray side panel
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// (414/512/512): inverted -> 590/512/512.
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const invFlankY, invFlankCb, invFlankCr = 590, 512, 512
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if err := g.GenerateFrame(buf, 79); err != nil {
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t.Fatalf("tick 79: %v", err)
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}
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if y, cb, cr := sampleV210(buf, width, 1840, 540); y != invFlankY || cb != invFlankCb || cr != invFlankCr {
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t.Fatalf("tick 79 shifted center: got %d/%d/%d, want inverted gray 590/512/512", y, cb, cr)
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}
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if y, _, _ := sampleV210(buf, width, 960, 540); y != greenY {
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t.Fatalf("tick 79 old center: Y=%d, want green %d (square moved away)", y, greenY)
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}
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// bars untouched far from the square
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if y, _, _ := sampleV210(buf, width, 100, 100); y != 414 {
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t.Fatalf("tick 79 bars: Y=%d, want gray flank 414", y)
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}
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}
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