I’m porting some graphics stuff I’ve written in 8 bits to 16 bits. One
of the problems I’m encountering is replacing memset as a filling
function. For example, to set an entire surface to a certain color.
Because 16 bits uses more than one byte for the color description, I am
unable to do this. How can I go about doing this on a 16 bit surface?
I’ve considered ideas…but they don’t sound too practical:
(1) Use memcpy to copy a color template (line) to the destination
surface one line at a time
(2) Manually set the pixels one by one? (yuck) …
One example of this was a Fill_Box function I wrote that used memset to
set a number of bytes (line) in a surface from a mapped pointer…
What’s the best means of going about doing this?
Paul Lowe
xpaull at ultraviolet.org
Paul Lowe skrev:
(2) Manually set the pixels one by one? (yuck) …
Isn?t this the way it?s done anyway?
What’s the best means of going about doing this?
I think most of the videocards nowadays have functions for clearing the
backbuffer with a specified color in notime. Perhaps that could be a
nice thing to implement in the SDL-api?
That didn?t realy answer your question did it?
Sorry, but palettebased colormodes and truecolormodes are very hard to
combine without loosing a lot of cpu-power in one end or the other.
/ Christian
Christian Granstr?m, Bryggerigatan 4A, 733 34 Sala, Sweden
home:0224-77312, cellular:070-4961587, work:018-184470
@christian.granstrom, christian.granstrom at home.se
I think most of the videocards nowadays have functions for clearing the
backbuffer with a specified color in notime. Perhaps that could be a
nice thing to implement in the SDL-api?
This is already in SDL 0.9.x as SDL_FillRect()
Sam Lantinga skrev:
I think most of the videocards nowadays have functions for clearing the
backbuffer with a specified color in notime. Perhaps that could be a
nice thing to implement in the SDL-api?
This is already in SDL 0.9.x as SDL_FillRect()
See ya!
Great!!!
Use it guys!
/ Christian
Christian Granstr?m, Bryggerigatan 4A, 733 34 Sala, Sweden
home:0224-77312, cellular:070-4961587, work:018-184470
@christian.granstrom, christian.granstrom at home.se