test: opengl test align text.

1 files changed, 6 insertions, 3 deletions

diff --git a/src/sdl-opengl-test.c b/src/sdl-opengl-test.c
index 9169be9..b2c37e1 100644
--- a/src/sdl-opengl-test.c
+++ b/src/sdl-opengl-test.c
@@ -17,7 +17,7 @@ main(int argc, char *argv[])
     Uint32 videoflags;
     int done;
     SDL_Event event;
-    float alpha, step;
+    float alpha, step, ux, uy;
     sdl_freetype_font_t * font;
     sdl_freetype_glyph_render_t * render;
     sdl_freetype_text_extents_t extents;
@@ -40,10 +40,12 @@ main(int argc, char *argv[])
     if (!font)
         goto errquit0;
 
+    ux = 1.0 / 320;
+    uy = 1.0 / 240;
     render = sdl_freetype_opengl_render_create ();
     if (!render)
         goto errquit1;
-    sdl_freetype_opengl_render_set_unit_scale (render, 1.0 / 320, 1.0 / 240);
+    sdl_freetype_opengl_render_set_unit_scale (render, ux, uy);
     sdl_freetype_font_set_render (font, render);
 
     glEnable (GL_TEXTURE_2D);
@@ -82,7 +84,8 @@ main(int argc, char *argv[])
         glScalef (alpha + 1.0, alpha + 1.0, 1.0);
         glRotatef (alpha * 360, 1.0, 1.0, 0);
         sdl_freetype_font_utf8_extents (font, &extents, TEXT, -1);
-        glTranslatef (-extents.width / (320.0 * 2), -extents.height / (240.0 * 2), 0);
+        glTranslatef (-extents.width * ux / 2 - extents.x_bearing * ux,
+                      -extents.height * uy / 2 + extents.y_bearing * uy, 0);
         sdl_freetype_font_show_utf8 (font, NULL, 255, 0, 0, alpha * 255,
                                      0, 0, TEXT, -1);