Stefan Ullinger

Hi, so here we go: GL_LINE_SMOOTH bad for business! ;) I checked the code within SDL_renderer_gl.c / GL_CreateRenderer(..) and have found the reason for blurred lines when using OpenGL. I have attached 2 images here. I don't know whether this has to be changed and I don't know if there is an option to turn it off/on...just wanted to say that with GL_LINE_SMOOTH enabled there is a difference when rendering with opengl compared to directx.
libsdl-org · Sep 19, 2009 · 438ff5d · 438ff5d
1 parent 7b808fc
commit 438ff5d
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/video/SDL_renderer_gl.c b/src/video/SDL_renderer_gl.c
@@ -423,7 +423,8 @@ GL_CreateRenderer(SDL_Window * window, Uint32 flags)
     data->scaleMode = -1;
     data->glDisable(GL_DEPTH_TEST);
     data->glDisable(GL_CULL_FACE);
-    data->glEnable(GL_LINE_SMOOTH);
+    /* This ended up causing video discrepancies between OpenGL and Direct3D */
+    /*data->glEnable(GL_LINE_SMOOTH);*/
     if (data->GL_ARB_texture_rectangle_supported) {
         data->glEnable(GL_TEXTURE_RECTANGLE_ARB);
     } else {