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TTF_GetGPUTextDrawData "crash" #619

@gibki

Description

@gibki

Requesting draw data for the text of " " (single space) shuts down the program on the spot with no additional output.

#include <SDL3/SDL.h>
#include <SDL3/SDL_main.h>
#include <SDL3_ttf/SDL_ttf.h>

int main(int argc, char *argv[]){
    SDL_SetLogPriorities(SDL_LOG_PRIORITY_DEBUG);
    SDL_Init(SDL_INIT_VIDEO);

    SDL_Window *window = SDL_CreateWindow("TTF", 800, 800, 0);
    SDL_GPUDevice *device = SDL_CreateGPUDevice(SDL_GPU_SHADERFORMAT_SPIRV, true, "vulkan");
    SDL_ClaimWindowForGPUDevice(device, window);

    if (!TTF_Init()){
        SDL_LogDebug(0, SDL_GetError());
        return SDL_APP_FAILURE;
    }
    SDL_LogDebug(0, "SDL_ttf version: %d", TTF_Version());
    TTF_TextEngine *text_engine = TTF_CreateGPUTextEngine(device);
    if (text_engine == NULL){
        SDL_LogDebug(0, SDL_GetError());
        return SDL_APP_FAILURE;
    }

    TTF_Font *font = TTF_OpenFont("./arial.ttf", 12);
    if (font == NULL){
        SDL_LogDebug(0, SDL_GetError());
        return SDL_APP_FAILURE;
    }

    SDL_LogDebug(0, "Create text");
    TTF_Text *text = TTF_CreateText(text_engine, font, " ", 1);
    if (text == NULL){
        SDL_LogDebug(0, SDL_GetError());
        return SDL_APP_FAILURE;
    }
    SDL_LogDebug(0, "Get text draw data");
    TTF_GPUAtlasDrawSequence *atlas_sequence = TTF_GetGPUTextDrawData(text);  // <<<---
    if (atlas_sequence == NULL){  // never reached
        SDL_LogDebug(0, SDL_GetError());
        return SDL_APP_FAILURE;
    }

    SDL_LogDebug(0, "Event loop");
    SDL_Event event;
    bool quit_event = false;
    while(!quit_event){
        while (SDL_PollEvent(&event)){
            if (event.type == SDL_EVENT_QUIT){
                quit_event = true;
            }
        }
    }

    TTF_DestroyText(text);
    TTF_CloseFont(font);
    TTF_DestroyGPUTextEngine(text_engine);
    TTF_Quit();

    SDL_ReleaseWindowFromGPUDevice(device, window);
    SDL_DestroyGPUDevice(device);
    SDL_Quit();
    return SDL_APP_SUCCESS;
}

Happens on multiple versions, also on latest, SDL revision: SDL-3.5.0-release-3.4.0-454-gad9138470 SDL_ttf version: 3003000

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