diff options
Diffstat (limited to 'engine/src/renderer/vertex_array.rs')
-rw-r--r-- | engine/src/renderer/vertex_array.rs | 131 |
1 files changed, 0 insertions, 131 deletions
diff --git a/engine/src/renderer/vertex_array.rs b/engine/src/renderer/vertex_array.rs deleted file mode 100644 index 2bd6a5b..0000000 --- a/engine/src/renderer/vertex_array.rs +++ /dev/null @@ -1,131 +0,0 @@ -use std::mem::size_of; - -use crate::currently_bound::CurrentlyBound; -use crate::renderer::vertex_buffer::VertexBuffer; -use crate::vertex::{Attribute, AttributeComponentType, Vertex}; - -const VERTEX_STRIDE: usize = size_of::<Vertex>(); - -#[derive(Debug)] -pub struct VertexArray -{ - array: gl::types::GLuint, -} - -impl VertexArray -{ - pub fn new() -> Self - { - let mut array = 0; - - unsafe { - gl::GenVertexArrays(1, &mut array); - } - - Self { array } - } - - /// Draws the currently bound vertex array. - pub fn draw( - _currently_bound: &CurrentlyBound<Self>, - primitive_kind: PrimitiveKind, - start_index: u32, - index_cnt: u32, - ) - { - unsafe { - #[allow(clippy::cast_possible_wrap)] - gl::DrawArrays( - primitive_kind.into_gl(), - start_index as gl::types::GLint, - index_cnt as gl::types::GLsizei, - ); - } - } - - pub fn configure_attrs( - _currently_bound: &CurrentlyBound<Self>, - _vert_buf_curr_bound: &CurrentlyBound<VertexBuffer>, - ) - { - let mut offset = 0; - - for attr in Vertex::attrs() { - Self::vertex_attrib_ptr(attr, offset); - - Self::enable_vertex_attrib_array(attr.index); - - offset += attr.component_size * attr.component_cnt as usize; - } - } - - #[allow(clippy::inline_always)] - #[inline(always)] - pub fn bind(&self, cb: impl FnOnce(CurrentlyBound<'_, Self>)) - { - unsafe { gl::BindVertexArray(self.array) } - - // SAFETY: A vertex array object is currently bound - let currently_bound = unsafe { CurrentlyBound::new() }; - - cb(currently_bound); - } - - fn vertex_attrib_ptr(vertex_attr: &Attribute, offset: usize) - { - unsafe { - #[allow(clippy::cast_possible_wrap, clippy::cast_possible_truncation)] - gl::VertexAttribPointer( - vertex_attr.index as gl::types::GLuint, - vertex_attr.component_cnt as i32, - Self::vertex_attr_type_to_gl(&vertex_attr.component_type), - gl::FALSE, - VERTEX_STRIDE as gl::types::GLsizei, - offset as *const _, - ); - } - } - - fn enable_vertex_attrib_array(index: usize) - { - unsafe { - #[allow(clippy::cast_possible_truncation)] - gl::EnableVertexAttribArray(index as gl::types::GLuint); - } - } - - fn vertex_attr_type_to_gl( - vertex_attr_type: &AttributeComponentType, - ) -> gl::types::GLenum - { - match vertex_attr_type { - AttributeComponentType::Float => gl::FLOAT, - } - } -} - -impl Drop for VertexArray -{ - fn drop(&mut self) - { - unsafe { - gl::DeleteVertexArrays(1, &self.array); - } - } -} - -#[derive(Debug)] -pub enum PrimitiveKind -{ - Triangles, -} - -impl PrimitiveKind -{ - fn into_gl(self) -> gl::types::GLenum - { - match self { - Self::Triangles => gl::TRIANGLES, - } - } -} |