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This commit is contained in:
J. Nick Koston
2025-10-18 13:38:45 -10:00
parent 1c8b60891c
commit 8545b5231b
1 changed files with 7 additions and 6 deletions
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13
esphome/components/light/color_mode.h
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@@ -288,15 +288,16 @@ class ColorModeMask {
/// Check if any mode in the bitmask has a specific capability
/// Used for checking if a light supports a capability (e.g., BRIGHTNESS, RGB)
bool has_capability(ColorCapability capability) const {
// Convert capability bit to array index (log2 of the bit value)
uint8_t cap_bit = static_cast<uint8_t>(capability);
// Count trailing zeros to get the bit position (0-5)
// Lookup the pre-computed bitmask for this capability and check intersection with our mask
// ColorCapability values: 1, 2, 4, 8, 16, 32 -> array indices: 0, 1, 2, 3, 4, 5
// We need to convert the power-of-2 value to an index
uint8_t cap_val = static_cast<uint8_t>(capability);
int index = 0;
while (index < COLOR_CAPABILITY_COUNT && !(cap_bit & (1 << index))) {
while (cap_val > 1) {
cap_val >>= 1;
++index;
}
// Look up the pre-computed bitmask and check if any of our set bits match
return (index < COLOR_CAPABILITY_COUNT) && ((this->mask_ & CAPABILITY_BITMASKS[index]) != 0);
return (this->mask_ & CAPABILITY_BITMASKS[index]) != 0;
}
/// Build a bitmask of modes that match the given capability requirements