feat(engine): add support for textures with 8-bit rgba data

1 files changed, 27 insertions, 3 deletions

diff --git a/engine/src/opengl/texture.rs b/engine/src/opengl/texture.rs
index c7bf75b..68ac050 100644
--- a/engine/src/opengl/texture.rs
+++ b/engine/src/opengl/texture.rs
@@ -32,18 +32,23 @@ impl Texture
         cb(currently_bound);
     }
 
-    pub fn generate(_: &CurrentlyBound<Self>, dimens: &Vec2<u32>, data: &[u8])
+    pub fn generate(
+        _: &CurrentlyBound<Self>,
+        dimens: &Vec2<u32>,
+        data: &[u8],
+        pixel_data_format: PixelDataFormat,
+    )
     {
         #[allow(clippy::cast_possible_wrap)]
         unsafe {
             gl::TexImage2D(
                 gl::TEXTURE_2D,
                 0,
-                gl::RGB as i32,
+                pixel_data_format.to_gl() as i32,
                 dimens.x as i32,
                 dimens.y as i32,
                 0,
-                gl::RGB,
+                pixel_data_format.to_gl(),
                 gl::UNSIGNED_BYTE,
                 data.as_ptr().cast(),
             );
@@ -142,3 +147,22 @@ impl Filtering
         }
     }
 }
+
+/// Texture pixel data format.
+#[derive(Debug, Clone, Copy)]
+pub enum PixelDataFormat
+{
+    Rgb,
+    Rgba,
+}
+
+impl PixelDataFormat
+{
+    fn to_gl(self) -> gl::types::GLenum
+    {
+        match self {
+            Self::Rgb => gl::RGB,
+            Self::Rgba => gl::RGBA,
+        }
+    }
+}