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51be3420b8
GLSL has the same behavior as MSL, in that -2147483648 is parsed as a unary minus on '2147483648'. 2147483648 overflows an i32, so this actually gets treated as -0. Change-Id: Ibebd8b78a8840f18c438ed1d3d24dee486a65816 Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/123202 Reviewed-by: Stephen White <senorblanco@chromium.org> Commit-Queue: Ben Clayton <bclayton@google.com> Commit-Queue: Ben Clayton <bclayton@chromium.org> Kokoro: Kokoro <noreply+kokoro@google.com>
38 lines
980 B
GLSL
38 lines
980 B
GLSL
#version 310 es
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float tint_float_modulo(float lhs, float rhs) {
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return (lhs - rhs * trunc(lhs / rhs));
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}
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layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
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void unused_entry_point() {
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return;
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}
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int a = 0;
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float b = 0.0f;
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int tint_div(int lhs, int rhs) {
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return (lhs / (bool(uint((rhs == 0)) | uint(bool(uint((lhs == (-2147483647 - 1))) & uint((rhs == -1))))) ? 1 : rhs));
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}
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int tint_mod(int lhs, int rhs) {
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int rhs_or_one = (bool(uint((rhs == 0)) | uint(bool(uint((lhs == (-2147483647 - 1))) & uint((rhs == -1))))) ? 1 : rhs);
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if (((uint((lhs | rhs_or_one)) & 2147483648u) != 0u)) {
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return (lhs - ((lhs / rhs_or_one) * rhs_or_one));
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} else {
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return (lhs % rhs_or_one);
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}
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}
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void foo(int maybe_zero) {
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a = tint_div(a, 0);
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a = tint_mod(a, 0);
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a = tint_div(a, maybe_zero);
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a = tint_mod(a, maybe_zero);
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b = (b / 0.0f);
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b = tint_float_modulo(b, 0.0f);
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b = (b / float(maybe_zero));
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b = tint_float_modulo(b, float(maybe_zero));
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}
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