[SDL] SDL_ttf: Creating surfaces every time

[dandago]

This is a snippet from a game I'm developing:


Code:
void BottomRightView::Render()
{
auto renderer = this->GetRenderer();

SDL_DestroyTexture(this->fontTexture);
SDL_FreeSurface(this->fontSurface);

std::string linesStr;
this->player->GetPlayerStateSummary(linesStr);

// TODO recreating these every time seems very inefficient
this->fontSurface = TTF_RenderText_Blended_Wrapped(font, linesStr.c_str(), this->fontColour, 300);
this->fontTexture = SDL_CreateTextureFromSurface(renderer, fontSurface);

SDL_Rect dstrect = { 504, 336, 0, 0 };
SDL_QueryTexture(fontTexture, NULL, NULL, &dstrect.w, &dstrect.h);

SDL_RenderCopy(renderer, this->fontTexture, NULL, &dstrect);
}



Since the player state that I'm drawing to the screen may change at any time, I'm having to create a new surface and texture every frame.

This seems really wasteful. Is there a more efficient way to do this?

------------------------
Daniel D'Agostino
http://gigi.nullneuron.net/gigilabs/

[capehill]

You could keep the old texture until status string actually changes, and then update the texture.

[Jonathan Dearborn]

http://stackoverflow.com/questions/29064904/rendering-fonts-and-text-with-sdl2-efficiently/29725751#29725751

Jonny D

Post by capehill
You could keep the old texture until status string actually changes, and
then update the texture.
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[dandago]

http://stackoverflow.com/questions/29064904/rendering-fonts-and-text-with-sdl2-efficiently/29725751#29725751 (http://stackoverflow.com/questions/29064904/rendering-fonts-and-text-with-sdl2-efficiently/29725751#29725751)
Jonny D

Interesting project! Is there any documentation on the library's capabilities other than the tiny snippet on the Github project homepage?

------------------------
Daniel D'Agostino
http://gigi.nullneuron.net/gigilabs/

[Jonathan Dearborn]

Nope! That snippet should eventually be expanded, but my time right now is
very limited. Check the header (SDL_FontCache.h) and the test program for
more details. I'm also around for any questions and if that makes me
produce useful information, I'll add it to the project page.

Jonny D

Post by Jonathan Dearborn
http://stackoverflow.com/questions/29064904/rendering-
fonts-and-text-with-sdl2-efficiently/29725751#29725751
Jonny D
Interesting project! Is there any documentation on the library's
capabilities other than the tiny snippet on the Github project homepage?
------------------------------
Daniel D'Agostino
http://gigi.nullneuron.net/gigilabs/
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