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stb_hexwave: Initialize output buffers before freq handling #1706

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stb_hexwave: Initialize output buffers before freq handling #1706

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8 changes: 4 additions & 4 deletions stb_hexwave.h
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Original file line number Diff line number Diff line change
Expand Up @@ -434,6 +434,10 @@ STB_HEXWAVE_DEF void hexwave_generate_samples(float *output, int num_samples, He
// convert parameters to times and slopes
hexwave_generate_linesegs(vert, hex, dt);

// clear the output and temporary buffers before processing
memset(output, 0, sizeof(float)*num_samples);
memset(temp_output, 0, 2*hexblep.width*sizeof(float));

if (hex->prev_dt != dt) {
// if frequency changes, add a fixup at the derivative discontinuity starting at now
float slope;
Expand All @@ -446,10 +450,6 @@ STB_HEXWAVE_DEF void hexwave_generate_samples(float *output, int num_samples, He
hex->prev_dt = dt;
}

// copy the buffered data from last call and clear the rest of the output array
memset(output, 0, sizeof(float)*num_samples);
memset(temp_output, 0, 2*hexblep.width*sizeof(float));

if (num_samples >= hexblep.width) {
memcpy(output, hex->buffer, buffered_length);
} else {
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