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Fix int8_t overflow in RGB heatmap effect (#18410)

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Marius Renner 2022-09-19 20:34:29 +02:00 committed by GitHub
parent 89df40d4f3
commit 652d1d8a6d
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quantum/rgb_matrix/animations/typing_heatmap_anim.h
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@ -29,7 +29,7 @@ void process_rgb_matrix_typing_heatmap(uint8_t row, uint8_t col) {
if (i_row == row && i_col == col) {
g_rgb_frame_buffer[row][col] = qadd8(g_rgb_frame_buffer[row][col], 32);
} else {
# define LED_DISTANCE(led_a, led_b) sqrt16(((int8_t)(led_a.x - led_b.x) * (int8_t)(led_a.x - led_b.x)) + ((int8_t)(led_a.y - led_b.y) * (int8_t)(led_a.y - led_b.y)))
# define LED_DISTANCE(led_a, led_b) sqrt16(((int16_t)(led_a.x - led_b.x) * (int16_t)(led_a.x - led_b.x)) + ((int16_t)(led_a.y - led_b.y) * (int16_t)(led_a.y - led_b.y)))
uint8_t distance = LED_DISTANCE(g_led_config.point[g_led_config.matrix_co[row][col]], g_led_config.point[g_led_config.matrix_co[i_row][i_col]]);
# undef LED_DISTANCE
if (distance <= RGB_MATRIX_TYPING_HEATMAP_SPREAD) {