User:Jbakker/Performance

Improve performance of Blender is a mind set. Many different areas work together and all work together to user noticeable performance.

Use a single loop for continuous memory

• The branch prediction misses height times. This could be a single time.
• Allow space in the branch prediction table

Don't

for (y = 0; y < height; y++) {
  for (x = 0; x < width; x++) {
    copy_v4_v4(rect_float, color);
    rect_float += 4;
  }
}

Do

const int size = height * width;
for (index = 0; index < size; index++) {
  copy_v4_v4(rect_float, color);
  rect_float += 4;
}