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Add an optimization for full width fills on some hardware

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If we know the rowstride is the same width as the frame buffer
then we can memcpy multiple rows at one time.
This commit is contained in:
Ray Strode 2008-05-29 14:34:35 -04:00
parent 697dc98ebb
commit 3493c2919f
1 changed files with 6 additions and 0 deletions
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6
src/libply/ply-frame-buffer.c
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@ -188,6 +188,12 @@ flush_xrgb32 (ply_frame_buffer_t *buffer)
dst = &buffer->map_address[(y1 * buffer->row_stride + x1) * 4];
src = (char *) &buffer->shadow_buffer[y1 * buffer->row_stride + x1];
if (buffer->area_to_flush.width == buffer->row_stride)
{
memcpy (dst, src, buffer->area_to_flush.width * buffer->area_to_flush.height * 4);
return;
}
for (y = y1; y < y2; y++)
{
memcpy (dst, src, buffer->area_to_flush.width * 4);