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tests: mem_trim accepts the BC3 scratch's even-size argument #799

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tests: mem_trim accepts the BC3 scratch's even-size argument #799

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5 changes: 4 additions & 1 deletion tests/test_mem_trim.py
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@
a floor, and the spare ones are counted out as well as in.
python -I -B tests/test_mem_trim.py
"""
import re
from pathlib import Path

ROOT = Path(__file__).resolve().parents[1]
Expand Down Expand Up @@ -42,7 +43,9 @@ def main():
need(begin.index("r.streams.resize(1)") < begin.index("r.si = 0"), "the streams given back are used after")

tex = (ROOT / "gpu/vk/vk_texture.cpp").read_text(encoding="utf-8")
need(tex.count("if (!bc_scratch_layout(cmd)) return false;") == 2, "a BC3 upload uses a scratch it did not ask for")
# (the second argument says the upload was encoded at an even size and needs the second scratch)
asks = re.findall(r"if \(!bc_scratch_layout\(cmd(?:, [\w.>-]+)?\)\) return false;", tex)
need(len(asks) == 2, "a BC3 upload uses a scratch it did not ask for")
need("bc_have = false" in block(tex, "void bc_scratch_idle("), "the scratch given back is still taken for made")
need("dead.push_back" in block(tex, "void bc_scratch_idle("), "the scratch is freed with no wait for the GPU")
need("total_bytes -= std::min(total_bytes, tex.bytes + tex.pad)" in tex, "a texture leaves the budget by its texels only")
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