[hvgl] Micro-optimize segment access
diff --git a/src/hb-aat-var-hvgl-table.cc b/src/hb-aat-var-hvgl-table.cc
index 1de3455..bd0ae83 100644
--- a/src/hb-aat-var-hvgl-table.cc
+++ b/src/hb-aat-var-hvgl-table.cc
@@ -210,13 +210,12 @@
break;
// Resolve blend type
+ segment_t segment = &v.arrayZ[(end - 1) * 4];
for (unsigned i = start; i < end; i++)
{
unsigned blendType = blendTypes[i];
-
- segment_t segment = &v.arrayZ[i * 4];
- unsigned prev_i = i == start ? end - 1 : i - 1;
- segment_t prev_segment = &v.arrayZ[prev_i * 4];
+ segment_t prev_segment = segment;
+ segment = &v.arrayZ[i * 4];
switch (blendType)
{
@@ -267,11 +266,12 @@
float y0 = (float) first_segment[SEGMENT_POINT_ON_CURVE_Y];
transform.transform_point (x0, y0);
draw_session.move_to (x0, y0);
+ segment_t next_segment = &v.arrayZ[start * 4];
for (unsigned i = start; i < end; i++)
{
- const segment_t segment = &v.arrayZ[i * 4];
+ segment_t segment = next_segment;
unsigned next_i = i == end - 1 ? start : i + 1;
- const segment_t next_segment = &v.arrayZ[next_i * 4];
+ next_segment = &v.arrayZ[next_i * 4];
float x1 = (float) segment[SEGMENT_POINT_OFF_CURVE_X];
float y1 = (float) segment[SEGMENT_POINT_OFF_CURVE_Y];
