sanspie
dae4bc19e1
Foundation for the aego engine. core/ errs, log, handle arena, mathx, clock, stats platform SDL3 backend plus a headless one, input state, events gpu device abstraction with gl33 and null backends vfs scheme-based virtual filesystem with overlay mounts engine builder, module registry, phase-ordered system loop, jobs demos basic, resize, input, headless; sandbox driver OpenGL bindings are generated into gpu/gl33/gl by tools/gen-gl.sh, so the module has no external dependencies.
34 lines
791 B
Go
34 lines
791 B
Go
package gl33
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import "testing"
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func TestFlipRows(t *testing.T) {
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// 2px wide, 3 rows tall, 1 byte per channel: rows tagged by their first byte.
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const stride, rows = 2 * 4, 3
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buf := make([]byte, stride*rows)
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for r := 0; r < rows; r++ {
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for i := 0; i < stride; i++ {
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buf[r*stride+i] = byte(r + 1)
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}
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}
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flipRows(buf, stride, rows)
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for r, want := range []byte{3, 2, 1} {
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if got := buf[r*stride]; got != want {
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t.Fatalf("row %d = %d, want %d", r, got, want)
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}
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}
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}
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func TestFlipRowsEvenAndSingle(t *testing.T) {
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single := []byte{9, 9, 9, 9}
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flipRows(single, 4, 1)
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if single[0] != 9 {
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t.Fatal("single row must be untouched")
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}
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even := []byte{1, 1, 1, 1, 2, 2, 2, 2}
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flipRows(even, 4, 2)
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if even[0] != 2 || even[4] != 1 {
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t.Fatalf("even swap wrong: %v", even)
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}
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}
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