draw to texture

[drarem]

How can I draw to a single texture? I want to assemble an image and rotate the whole image, instead of rotating the individual pieces. Like cards on a table, i want to rotate the table with the cards in 2d without including any other images being displayed.

 

I'm trying out the LED library, seems to work ok but I keep hitting the wall of not being able to rotate the group of images.

 

thanks.

[Josh]

The buffer class has what you need. It's not official, so take a look at the headers and ask if you have any questions.

[drarem]

thanks

[drarem]

Looks like I need to do this, is this the idea?

 

-- get current buffer, set as old buffer

-- set context to buffer

-- draw stuff on it (image texture, drawrect, etc)

-- blit to destination texture

-- reset buffer to old buffer

[shadmar]

I don't understand what you are trying to do.

[Josh]

blit to destination texture

 

Just get the color component of the buffer, and that is your texture.

[martyj]

I believe @Drarem is trying to do 2d game rendering in Leadwerks. Leadwerks isn't really designed for 2d. It could do 2d games, but it would require additional programming on the users end to work with 2d concepts.

 

You're not going to have to worry about double buffering or any of that with leadwerks.

 

The best way to do 2d rendering in leadwerks in the way that you're wanting to is to use this Camera::SetProjectionMode

 

Then to render your objects as a sprite. http://www.leadwerks.com/werkspace/page/api-reference/_/sprite/

[drarem]

Are you saying to create a pivot at run-time and then parent it to the sprites, so just rotating the pivot will rotate all the sprites at once around the pivot? Not trying to do 2d rendering, trying to create graphics at run-time on a 2d billboard or plane. It will be part of the initialization process; it wont be rebuilt with game loop.

[shadmar]

Is it beacuse of the rotation you want to use buffers?

You can rotate 2d textures using a shader and a mat2 rotation matrix with drawimage, but I don't think I get it what it is you want to do

[drarem]

it would if it rotates the group of drawn 2d textures and not each one individually, as what I'm doing does now.

[Josh]

http://www.leadwerks.com/werkspace/page/api-reference/_/context/contextsetrotation-r727