We are currently migrating Bugzilla to GitHub issues.
Any changes made to the bug tracker now will be lost, so please do not post new bugs or make changes to them.
When we're done, all bug URLs will redirect to their equivalent location on the new bug tracker.

Source file that reliably reproduces the issue.

main.c (text/x-csrc), 5.37 KB, created by Eric Scrivner on 2020-02-11 02:47:48 UTC

(hide)

Description:

Filename:

MIME Type:

Creator: Eric Scrivner

Created: 2020-02-11 02:47:48 UTC

Size: 5.37 KB

patch

obsolete

>#include <SDL.h>
>#include <stdbool.h>
>
>#define REPRODUCE_BUG 1
>
>typedef struct platform_t {
>  bool IsRunning;
>} platform;
>
>static platform GlobalPlatform;
>
>void LinuxLogError(const char* Format, ...)
>{
>  va_list ArgList;
>  va_start(ArgList, Format);
>  SDL_LogMessageV(SDL_LOG_CATEGORY_ERROR, SDL_LOG_PRIORITY_ERROR, Format, ArgList);
>  va_end(ArgList);
>}
>
>void Update(SDL_Renderer* Renderer)
>{
>  SDL_Rect ColoredRect = {
>    .x = 100,
>    .y = 100,
>    .w = 150,
>    .h = 40
>  };
>
>  // Draw rect
>  {
>    SDL_SetRenderDrawColor(
>      Renderer, 0.25 * 255, 0.25 * 255, 0.25 * 255, SDL_ALPHA_OPAQUE
>    );
>    SDL_RenderFillRect(Renderer, &ColoredRect);
>  }
>
>  // NOTE: For some reason drawing the lines _before_ copying from a texture
>  // produces a single extra white pixel to the bottom right of our copied
>  // texture.
>
>#if REPRODUCE_BUG
>  // Draw rect outline
>  {
>    SDL_SetRenderDrawColor(Renderer, 255, 255, 255, SDL_ALPHA_OPAQUE);
>    SDL_RenderDrawLine(
>      Renderer,
>      ColoredRect.x,
>      ColoredRect.y,
>      ColoredRect.x + ColoredRect.w,
>      ColoredRect.y
>    );
>    SDL_RenderDrawLine(
>      Renderer,
>      ColoredRect.x + ColoredRect.w,
>      ColoredRect.y,
>      ColoredRect.x + ColoredRect.w,
>      ColoredRect.y + ColoredRect.h
>    );
>    SDL_RenderDrawLine(
>      Renderer,
>      ColoredRect.x + ColoredRect.w,
>      ColoredRect.y + ColoredRect.h,
>      ColoredRect.x,
>      ColoredRect.y + ColoredRect.h
>    );
>    SDL_RenderDrawLine(
>      Renderer,
>      ColoredRect.x,
>      ColoredRect.y + ColoredRect.h,
>      ColoredRect.x,
>      ColoredRect.y
>    );
>  }
>
>  // Render texture
>  {
>    Sint32 BitmapWidth = 80;
>    Sint32 BitmapHeight = 16;
>    Uint8* Pixels = (Uint8*)calloc(1, sizeof(Uint32) * BitmapWidth * BitmapHeight);
>
>    SDL_Texture* FontTexture = SDL_CreateTexture(
>      Renderer,
>      SDL_PIXELFORMAT_RGBA32,
>      SDL_TEXTUREACCESS_STREAMING,
>      BitmapWidth,
>      BitmapHeight
>    );
>    SDL_UpdateTexture(FontTexture, NULL, Pixels, sizeof(Uint32) * BitmapWidth);
>    SDL_Rect SrcR = {
>      .x = 0,
>      .y = 0,
>      .w = BitmapWidth,
>      .h = BitmapHeight
>    };
>    SDL_Rect DstR = {
>      .x = ColoredRect.x + ColoredRect.w / 2 - BitmapWidth / 2,
>      .y = ColoredRect.y + ColoredRect.h / 2,
>      .w = BitmapWidth,
>      .h = BitmapHeight
>    };
>    SDL_RenderCopy(Renderer, FontTexture, &SrcR, &DstR);
>    SDL_DestroyTexture(FontTexture);
>
>    free(Pixels);
>  }
>#else
>  // Render texture
>  {
>    Sint32 BitmapWidth = 80;
>    Sint32 BitmapHeight = 16;
>    Uint8* Pixels = (Uint8*)calloc(1, sizeof(Uint32) * BitmapWidth * BitmapHeight);
>
>    SDL_Texture* FontTexture = SDL_CreateTexture(
>      Renderer,
>      SDL_PIXELFORMAT_RGBA32,
>      SDL_TEXTUREACCESS_STREAMING,
>      BitmapWidth,
>      BitmapHeight
>    );
>    SDL_UpdateTexture(FontTexture, NULL, Pixels, sizeof(Uint32) * BitmapWidth);
>    SDL_Rect SrcR = {
>      .x = 0,
>      .y = 0,
>      .w = BitmapWidth,
>      .h = BitmapHeight
>    };
>    SDL_Rect DstR = {
>      .x = ColoredRect.x + ColoredRect.w / 2 - BitmapWidth / 2,
>      .y = ColoredRect.y + ColoredRect.h / 2,
>      .w = BitmapWidth,
>      .h = BitmapHeight
>    };
>    SDL_RenderCopy(Renderer, FontTexture, &SrcR, &DstR);
>    SDL_DestroyTexture(FontTexture);
>
>    free(Pixels);
>  }
>
>  // Draw rect outline
>  {
>    SDL_SetRenderDrawColor(Renderer, 255, 255, 255, SDL_ALPHA_OPAQUE);
>    SDL_RenderDrawLine(
>      Renderer,
>      ColoredRect.x,
>      ColoredRect.y,
>      ColoredRect.x + ColoredRect.w,
>      ColoredRect.y
>    );
>    SDL_RenderDrawLine(
>      Renderer,
>      ColoredRect.x + ColoredRect.w,
>      ColoredRect.y,
>      ColoredRect.x + ColoredRect.w,
>      ColoredRect.y + ColoredRect.h
>    );
>    SDL_RenderDrawLine(
>      Renderer,
>      ColoredRect.x + ColoredRect.w,
>      ColoredRect.y + ColoredRect.h,
>      ColoredRect.x,
>      ColoredRect.y + ColoredRect.h
>    );
>    SDL_RenderDrawLine(
>      Renderer,
>      ColoredRect.x,
>      ColoredRect.y + ColoredRect.h,
>      ColoredRect.x,
>      ColoredRect.y
>    );
>  }
>#endif
>}
>
>int main()
>{
>  int InitResult = SDL_Init(SDL_INIT_EVERYTHING);
>
>  if (InitResult == 0)
>  {
>    SDL_Window* Window = SDL_CreateWindow(
>      "Bug Repro",
>      SDL_WINDOWPOS_CENTERED,
>      SDL_WINDOWPOS_CENTERED,
>      800,
>      600,
>      SDL_WINDOW_ALLOW_HIGHDPI
>    );
>
>    if (Window != NULL)
>    {
>      SDL_Renderer* Renderer = SDL_CreateRenderer(
>        Window,
>        -1,
>        SDL_RENDERER_ACCELERATED
>      );
>
>      if (Renderer != NULL)
>      {
>        GlobalPlatform.IsRunning = true;
>
>        SDL_Event Event;
>        while (GlobalPlatform.IsRunning)
>        {
>          while (SDL_PollEvent(&Event))
>          {
>            if (Event.type == SDL_QUIT)
>            {
>              GlobalPlatform.IsRunning = false;
>            }
>
>            if (Event.type == SDL_KEYDOWN)
>            {
>              if (Event.key.keysym.sym == SDLK_ESCAPE)
>              {
>                GlobalPlatform.IsRunning = false;
>              }
>            }
>          }
>
>          SDL_SetRenderDrawColor(Renderer, 0, 0, 0, SDL_ALPHA_OPAQUE);
>          SDL_RenderClear(Renderer);
>          Update(Renderer);
>          SDL_RenderPresent(Renderer);
>        }
>
>        SDL_DestroyRenderer(Renderer);
>      }
>      else
>      {
>        LinuxLogError("Failed to create renderer: %s", SDL_GetError());
>      }
>
>      SDL_DestroyWindow(Window);
>    }
>    else
>    {
>      LinuxLogError("Failed to create window: %s", SDL_GetError());
>    }
>
>    SDL_Quit();
>  }
>
>  return(0);
>}

Actions: View

Attachments on bug 4972: 4201 | 4202

We are currently migrating Bugzilla to GitHub issues.Any changes made to the bug tracker now will be lost, so please do not post new bugs or make changes to them.When we're done, all bug URLs will redirect to their equivalent location on the new bug tracker.

We are currently migrating Bugzilla to GitHub issues.
Any changes made to the bug tracker now will be lost, so please do not post new bugs or make changes to them.
When we're done, all bug URLs will redirect to their equivalent location on the new bug tracker.