Fix bug where window resize event is updated every frame

1 files changed, 10 insertions, 1 deletions

diff --git a/src/graphics/font.c b/src/graphics/font.c
index b6ceaf5..40fe641 100644
--- a/src/graphics/font.c
+++ b/src/graphics/font.c
@@ -4,6 +4,8 @@
 #define STB_TRUETYPE_IMPLEMENTATION
 #include "../../external/stb_truetype.h"
 
+/* TODO: Show a rectangle for unsupported glyphs or if |self| is NULL */
+
 /* Need padding so filtering doesn't touch pixels in another glyphs area */
 #define GLYPH_PADDING 2
 #define GLYPH_UPSAMPLE 1
@@ -125,6 +127,9 @@ static void mgl_font_handle_new_render_position(mgl_font *self, int glyph_width)
 }
 
 int mgl_font_get_glyph(mgl_font *self, uint32_t codepoint, mgl_font_glyph *glyph) {
+    if(!self)
+        return -1;
+
     if(self->font_atlas.width == 0) {
         if(self->texture.id == 0 && mgl_texture_init(&self->texture) != 0)
             return -1;
@@ -136,7 +141,9 @@ int mgl_font_get_glyph(mgl_font *self, uint32_t codepoint, mgl_font_glyph *glyph
             .pixel_coordinates = true
         };
 
-        if(mgl_texture_load_from_memory(&self->texture, NULL, initial_atlas_size, initial_atlas_size, MGL_IMAGE_FORMAT_ALPHA, &load_options) == 0) {
+        if(mgl_texture_load_from_memory(&self->texture, NULL, initial_atlas_size, initial_atlas_size, MGL_IMAGE_FORMAT_ALPHA, &load_options) != 0) {
+            return -1;
+        } else {
             /*fprintf(stderr, "Error: failed to create font atlas texture, error: mgl_texture_load_from_memory failed\n");*/
             self->font_atlas.width = initial_atlas_size;
             self->font_atlas.height = initial_atlas_size;
@@ -230,5 +237,7 @@ int mgl_font_get_glyph(mgl_font *self, uint32_t codepoint, mgl_font_glyph *glyph
 }
 
 float mgl_font_get_kerning(const mgl_font *self, uint32_t prev_codepoint, uint32_t codepoint) {
+    if(!self || self->texture.id == 0)
+        return 0.0f;
     return stbtt_GetCodepointKernAdvance(self->font_info, prev_codepoint, codepoint) * stbtt_ScaleForPixelHeight(self->font_info, self->character_size);
 }