ui_tree_table

src/render/render.h

@@ -15,6 +15,7 @@ struct rn_font_t {
     u32 first_char, last_char;
     u32 texture_id;
 
+    f32 computed_xchar_size;
     f32 size;
     f32 descent;
     f32 ascent;

src/render/render_opengl.c

@@ -50,6 +50,8 @@ fn void rn_reload_font(f32 font_size, f32 dpr) {
     glTextureStorage2D(atlas->texture_id, 1, GL_R8, (GLsizei)atlas->size.x, (GLsizei)atlas->size.y);
     glTextureSubImage2D(atlas->texture_id, 0, 0, 0, (GLsizei)atlas->size.x, (GLsizei)atlas->size.y, GL_RED, GL_UNSIGNED_BYTE, atlas->bitmap);
     rn->main_font->texture_id = atlas->texture_id;
+    rn->main_font->computed_xchar_size = rn_measure_string(rn->main_font, s8_lit("_")).x;
+
     ma_end_scratch(scratch);
 }