diff options
Diffstat (limited to 'engine/src/opengl/buffer.rs')
| -rw-r--r-- | engine/src/opengl/buffer.rs | 37 |
1 files changed, 32 insertions, 5 deletions
diff --git a/engine/src/opengl/buffer.rs b/engine/src/opengl/buffer.rs index 34514fd..3a4ecf0 100644 --- a/engine/src/opengl/buffer.rs +++ b/engine/src/opengl/buffer.rs @@ -4,13 +4,14 @@ use std::mem::size_of_val; use crate::opengl::currently_bound::CurrentlyBound; #[derive(Debug)] -pub struct Buffer<Item> +pub struct Buffer<Item, ModeT: Mode> { buffer: gl::types::GLuint, _item_pd: PhantomData<Item>, + _mode_pd: PhantomData<ModeT>, } -impl<Item> Buffer<Item> +impl<Item, ModeT: Mode> Buffer<Item, ModeT> { pub fn new() -> Self { @@ -23,6 +24,7 @@ impl<Item> Buffer<Item> Self { buffer, _item_pd: PhantomData, + _mode_pd: PhantomData, } } @@ -31,7 +33,7 @@ impl<Item> Buffer<Item> pub fn bind(&self, cb: impl FnOnce(CurrentlyBound<'_, Self>)) { unsafe { - gl::BindBuffer(gl::ARRAY_BUFFER, self.buffer); + gl::BindBuffer(ModeT::GL_ENUM, self.buffer); } // SAFETY: The buffer object is bound above @@ -46,7 +48,7 @@ impl<Item> Buffer<Item> unsafe { #[allow(clippy::cast_possible_wrap)] gl::BufferData( - gl::ARRAY_BUFFER, + ModeT::GL_ENUM, size_of_val(items) as gl::types::GLsizeiptr, items.as_ptr().cast(), usage.into_gl(), @@ -55,7 +57,7 @@ impl<Item> Buffer<Item> } } -impl<Item> Drop for Buffer<Item> +impl<Item, ModeT: Mode> Drop for Buffer<Item, ModeT> { fn drop(&mut self) { @@ -92,3 +94,28 @@ impl Usage } } } + +/// Buffer mode. +pub trait Mode +{ + #[doc(hidden)] + const GL_ENUM: gl::types::GLenum; +} + +/// Array buffer kind. +#[derive(Debug)] +pub struct ArrayKind; + +impl Mode for ArrayKind +{ + const GL_ENUM: gl::types::GLenum = gl::ARRAY_BUFFER; +} + +/// Element array buffer kind. +#[derive(Debug)] +pub struct ElementArrayKind; + +impl Mode for ElementArrayKind +{ + const GL_ENUM: gl::types::GLenum = gl::ELEMENT_ARRAY_BUFFER; +} |