diff options
Diffstat (limited to 'engine/src/renderer/opengl.rs')
| -rw-r--r-- | engine/src/renderer/opengl.rs | 124 |
1 files changed, 55 insertions, 69 deletions
diff --git a/engine/src/renderer/opengl.rs b/engine/src/renderer/opengl.rs index c036cc0..c44a479 100644 --- a/engine/src/renderer/opengl.rs +++ b/engine/src/renderer/opengl.rs @@ -9,6 +9,7 @@ use std::process::abort; use ecs::actions::Actions; use ecs::component::local::Local; +use ecs::phase::{PRESENT as PRESENT_PHASE, START as START_PHASE}; use ecs::query::options::{Not, With}; use ecs::sole::Single; use ecs::system::{Into as _, System}; @@ -18,7 +19,6 @@ use crate::camera::{Active as ActiveCamera, Camera}; use crate::color::Color; use crate::data_types::dimens::Dimens; use crate::draw_flags::{DrawFlags, NoDraw, PolygonModeConfig}; -use crate::event::{Present as PresentEvent, Start as StartEvent}; use crate::lighting::{DirectionalLight, GlobalLight, PointLight}; use crate::material::{Flags as MaterialFlags, Material}; use crate::matrix::Matrix; @@ -61,22 +61,22 @@ use crate::opengl::{ Capability, ContextFlags, }; -use crate::projection::{new_perspective_matrix, Projection}; +use crate::projection::{ClipVolume, Projection}; use crate::texture::{Id as TextureId, Texture}; use crate::transform::{Position, Scale}; -use crate::util::NeverDrop; +use crate::util::{defer, Defer, RefOrValue}; use crate::vector::{Vec2, Vec3}; use crate::vertex::{AttributeComponentType, Vertex}; use crate::window::Window; -type RenderableEntity = ( - Mesh, - Material, - Option<MaterialFlags>, - Option<Position>, - Option<Scale>, - Option<DrawFlags>, - Option<GlObjects>, +type RenderableEntity<'a> = ( + &'a Mesh, + &'a Material, + &'a Option<MaterialFlags>, + &'a Option<Position>, + &'a Option<Scale>, + &'a Option<DrawFlags>, + &'a Option<GlObjects>, ); #[derive(Debug, Default)] @@ -87,10 +87,10 @@ impl ecs::extension::Extension for Extension { fn collect(self, mut collector: ecs::extension::Collector<'_>) { - collector.add_system(StartEvent, initialize); + collector.add_system(*START_PHASE, initialize); collector.add_system( - PresentEvent, + *PRESENT_PHASE, render .into_system() .initialize((GlobalGlObjects::default(),)), @@ -133,10 +133,10 @@ fn initialize(window: Single<Window>) #[allow(clippy::too_many_arguments)] fn render( - query: Query<RenderableEntity, Not<With<NoDraw>>>, - point_light_query: Query<(PointLight,)>, - directional_lights: Query<(DirectionalLight,)>, - camera_query: Query<(Camera, Position, ActiveCamera)>, + query: Query<RenderableEntity<'_>, Not<With<NoDraw>>>, + point_light_query: Query<(&PointLight,)>, + directional_lights: Query<(&DirectionalLight,)>, + camera_query: Query<(&Camera, &Position, &ActiveCamera)>, window: Single<Window>, global_light: Single<GlobalLight>, mut gl_objects: Local<GlobalGlObjects>, @@ -166,32 +166,25 @@ fn render( clear_buffers(BufferClearMask::COLOR | BufferClearMask::DEPTH); for ( - entity_index, + euid, (mesh, material, material_flags, position, scale, draw_flags, gl_objects), - ) in query.iter().enumerate() + ) in query.iter_with_euids() { let material_flags = material_flags .map(|material_flags| material_flags.clone()) .unwrap_or_default(); - let new_gl_objects; - - let gl_objects = if let Some(gl_objects) = gl_objects.as_deref() { - gl_objects - } else { - // TODO: Account for when meshes are changed - let gl_objects = GlObjects::new(&mesh); - - new_gl_objects = Some(gl_objects.clone()); - - actions.add_components( - query.get_entity_uid(entity_index).unwrap(), - (gl_objects,), - ); - - &*new_gl_objects.unwrap() + let gl_objs = match gl_objects.as_deref() { + Some(gl_objs) => RefOrValue::Ref(gl_objs), + None => RefOrValue::Value(Some(GlObjects::new(&mesh))), }; + defer!(|gl_objs| { + if let RefOrValue::Value(opt_gl_objs) = gl_objs { + actions.add_components(euid, (opt_gl_objs.take().unwrap(),)); + }; + }); + apply_transformation_matrices( Transformation { position: position.map(|pos| *pos).unwrap_or_default().position, @@ -238,7 +231,7 @@ fn render( ); } - draw_mesh(gl_objects); + draw_mesh(gl_objs.get().unwrap()); if draw_flags.is_some() { let default_polygon_mode_config = PolygonModeConfig::default(); @@ -276,9 +269,9 @@ fn draw_mesh(gl_objects: &GlObjects) gl_objects.vertex_arr.bind(); if gl_objects.index_buffer.is_some() { - VertexArray::draw_elements(PrimitiveKind::Triangles, 0, gl_objects.index_cnt); + VertexArray::draw_elements(PrimitiveKind::Triangles, 0, gl_objects.element_cnt); } else { - VertexArray::draw_arrays(PrimitiveKind::Triangles, 0, 3); + VertexArray::draw_arrays(PrimitiveKind::Triangles, 0, gl_objects.element_cnt); } } @@ -363,9 +356,9 @@ fn get_glsl_shader_content(path: &Path) -> Result<Vec<u8>, std::io::Error> struct GlObjects { /// Vertex and index buffer has to live as long as the vertex array - vertex_buffer: Buffer<Vertex>, + _vertex_buffer: Buffer<Vertex>, index_buffer: Option<Buffer<u32>>, - index_cnt: u32, + element_cnt: u32, vertex_arr: VertexArray, } @@ -418,37 +411,27 @@ impl GlObjects vertex_arr.bind_element_buffer(&index_buffer); return Self { - vertex_buffer, + _vertex_buffer: vertex_buffer, index_buffer: Some(index_buffer), - index_cnt: indices.len().try_into().unwrap(), + element_cnt: indices + .len() + .try_into() + .expect("Mesh index count does not fit into a 32-bit unsigned int"), vertex_arr, }; } Self { - vertex_buffer, + _vertex_buffer: vertex_buffer, index_buffer: None, - index_cnt: 0, + element_cnt: mesh + .vertices() + .len() + .try_into() + .expect("Mesh vertex count does not fit into a 32-bit unsigned int"), vertex_arr, } } - - pub fn clone(&self) -> NeverDrop<Self> - { - NeverDrop::new(Self { - // SAFETY: The vertex buffer will never become dropped (NeverDrop ensures it) - vertex_buffer: unsafe { self.vertex_buffer.clone_weak() }, - index_buffer: self - .index_buffer - .as_ref() - // SAFETY: The index buffer will never become dropped (NeverDrop ensures - // it) - .map(|index_buffer| unsafe { index_buffer.clone_weak() }), - index_cnt: self.index_cnt, - // SAFETY: The vertex array will never become dropped (NeverDrop ensures it) - vertex_arr: unsafe { self.vertex_arr.clone_unsafe() }, - }) - } } fn apply_transformation_matrices( @@ -462,19 +445,22 @@ fn apply_transformation_matrices( gl_shader_program .set_uniform_matrix_4fv(c"model", &create_transformation_matrix(transformation)); - let view = create_view(camera, camera_pos); + let view_matrix = create_view_matrix(camera, &camera_pos.position); - gl_shader_program.set_uniform_matrix_4fv(c"view", &view); + gl_shader_program.set_uniform_matrix_4fv(c"view", &view_matrix); #[allow(clippy::cast_precision_loss)] - let projection = match &camera.projection { - Projection::Perspective(perspective) => new_perspective_matrix( - perspective, + let proj_matrix = match &camera.projection { + Projection::Perspective(perspective_proj) => perspective_proj.to_matrix_rh( window_size.width as f32 / window_size.height as f32, + ClipVolume::NegOneToOne, ), + Projection::Orthographic(orthographic_proj) => { + orthographic_proj.to_matrix_rh(&camera_pos.position, ClipVolume::NegOneToOne) + } }; - gl_shader_program.set_uniform_matrix_4fv(c"projection", &projection); + gl_shader_program.set_uniform_matrix_4fv(c"projection", &proj_matrix); } fn apply_light<PointLightHolder>( @@ -687,11 +673,11 @@ fn create_light_uniform_name( } } -fn create_view(camera: &Camera, camera_pos: &Position) -> Matrix<f32, 4, 4> +fn create_view_matrix(camera: &Camera, camera_pos: &Vec3<f32>) -> Matrix<f32, 4, 4> { let mut view = Matrix::new(); - view.look_at(&camera_pos.position, &camera.target, &camera.global_up); + view.look_at(&camera_pos, &camera.target, &camera.global_up); view } |