On 07/28/2015 08:19 PM, Thomas Huth wrote:
Drawing the cursor in the frame buffer memory is a very, very
slow operation. So let's simply switch to a "underscore" cursor
instead of the full block cursor to save some precious cycles.
Signed-off-by: Thomas Huth <th...@redhat.com>
---
slof/fs/fbuffer.fs | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/slof/fs/fbuffer.fs b/slof/fs/fbuffer.fs
index 0128c07..542c431 100644
--- a/slof/fs/fbuffer.fs
+++ b/slof/fs/fbuffer.fs
@@ -98,7 +98,8 @@ CREATE bitmap-buffer 400 4 * allot
: fb8-toggle-cursor ( -- )
line# fb8-line2addr column# fb8-columns2bytes +
- char-height 0 ?DO
+ char-height 3 - screen-width screen-depth * * +
+ 3 0 ?DO
Why not just:
- char-height 0 ?DO
+ 1 0 ?DO
? What is this magic with screen-width about?
dup char-width screen-depth * invert-region
screen-width screen-depth * +
LOOP drop
--
Alexey
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