check bounds

2 files changed, 7 insertions, 2 deletions

diff --git a/src/rendering.cc b/src/rendering.cc
index a34e01c..89a64ac 100644
--- a/src/rendering.cc
+++ b/src/rendering.cc
@@ -107,13 +107,18 @@ void wayc_atlas_use(atlas_s* atlas, u32 slot) {
   wayc_sampler_use(atlas->sampler, slot);
 }
 
-void wayc_atlas_set(atlas_s* atlas, image_data_type_e data_type, ivec2 offset,
+bool wayc_atlas_set(atlas_s* atlas, image_data_type_e data_type, ivec2 offset,
                     u32 width, u32 height, i32 alignment, const u8* data) {
   wayc_notnull(atlas);
   wayc_notnull(data);
 
+  u32 final_x = offset[0] + width;
+  u32 final_y = offset[1] + height;
+  if (final_x > atlas->width || final_y > atlas->height) return false;
+
   wayc_image_upload(atlas->texture, offset, width, height, IMAGE_TYPE_2D,
                     atlas->format, data_type, alignment, data);
+  return true;
 }
 
 void wayc_atlas_deinit(atlas_s* atlas) {
diff --git a/src/rendering.h b/src/rendering.h
index 7e5e46e..98f70ce 100644
--- a/src/rendering.h
+++ b/src/rendering.h
@@ -64,6 +64,6 @@ struct atlas_s {
 bool wayc_atlas_init(atlas_s* atlas, image_format_e format, u32 width,
                      u32 height);
 void wayc_atlas_use(atlas_s* atlas, u32 slot);
-void wayc_atlas_set(atlas_s* atlas, image_data_type_e data_type, ivec2 offset,
+bool wayc_atlas_set(atlas_s* atlas, image_data_type_e data_type, ivec2 offset,
                     u32 width, u32 height, i32 alignment, const u8* data);
 void wayc_atlas_deinit(atlas_s* atlas);