The word wrapping may disagree between outlined and non-outlined text in Surface Engine

[rapha-s]

The word wrapping may disagree between outlined and non-outlined text in Surface Engine, causing a misalignment between the outline and the rendered text when blending, as demonstrated below:

Happens on the latest commit to this point 5208d1c

I couldn't pinpoint if there's an exact case for this to happen, it just happens with some combinations of wrap widths and font+outline sizes, doesn't matter the font you are using.

[slouken]

Can you post a minimal example with fonts, sizes and widths?

[slouken]

Also, it makes sense that this would happen - outlined text is larger and will not fit in the same space.

[rapha-s]

Hi!

Here is an example!

And yeah, tho it makes sense there's no way to counteract it (by saving the wrap previously based on the outline version, or by faking the outline size on the inner text so it wraps the same, etc).

RockoUltraFLF.zip

#include <SDL3/SDL.h>
#include <SDL3/SDL_ttf.h>

int main(int argc, char* argv[]) {
    //Setup
    SDL_Init(SDL_INIT_VIDEO);
    TTF_Init();

    //More Setup
    SDL_Window* window = SDL_CreateWindow("Outlined Text", 800, 600, 0);
    SDL_Renderer* renderer = SDL_CreateRenderer(window,NULL);
    TTF_Font* font = TTF_OpenFont("RockoUltraFLF.ttf", 68);

    //Params
    SDL_Color textColor = { 255, 255, 255, 255 };
    SDL_Color outline_color = { 255, 0, 0, 255 };
    int outline_size = 5;
    int wrap_width = 436;
    const char* text = "Auribus oculi fideliores sunt";

    //Render Outline
    TTF_SetFontOutline(font, outline_size);
    SDL_Surface* outline = TTF_RenderText_Blended_Wrapped(font, text, 0, outline_color, wrap_width);

    //Render Inner
    TTF_SetFontOutline(font, 0);
    SDL_Surface* inner = TTF_RenderText_Blended_Wrapped(font, text, 0, textColor, wrap_width);

    //Blit Together
    SDL_Rect rect = { outline_size, outline_size, inner->w, inner->h };
    SDL_SetSurfaceBlendMode(inner, SDL_BLENDMODE_BLEND);
    SDL_BlitSurface(inner, NULL, outline, &rect);

    //Create Texture
    SDL_Texture* textTexture = SDL_CreateTextureFromSurface(renderer, outline);
    SDL_DestroySurface(outline);
    SDL_DestroySurface(inner);


    //Display
    SDL_FRect textRect;
    textRect.x =100;
    textRect.y = 100;
    textRect.w = (float)textTexture->w;
    textRect.h = (float)textTexture->h;
    SDL_Event event;
    bool running = true;
    while (running) {
        while (SDL_PollEvent(&event)) {
            if (event.type == SDL_EVENT_QUIT) {
                running = false;
            }
        }

        SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
        SDL_RenderClear(renderer);
        SDL_RenderTexture(renderer, textTexture, NULL, &textRect);
        SDL_RenderPresent(renderer);
    }
    SDL_DestroyTexture(textTexture);
    TTF_CloseFont(font);
    SDL_DestroyRenderer(renderer);
    SDL_DestroyWindow(window);
    TTF_Quit();
    SDL_Quit();
    return 0;
}

Outcome: