gloss-renderer 0.9.0

Core renderer for gloss
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184

use crate::config::RenderConfig;
use log::trace;
use nalgebra as na;

use crate::scene::Scene;

use easy_wgpu::gpu::Gpu;

#[cfg(feature = "selector")]
use super::{entity_id_pass::EntityIdPass, outline_pass::OutlinePass};
use super::{line_pipeline::LinePipeline, mesh_pipeline::MeshPipeline, point_pipeline::PointPipeline, upload_pass::PerFrameUniforms};

use crate::forward_renderer::{render_passes::pipeline_runner::PipelineRunner, renderer::OffscreenTarget};
use easy_wgpu::framebuffer::FrameBuffer;

/// Render all the meshes from the scene
pub struct MainPass {
    mesh_pipeline: MeshPipeline,
    point_pipeline: PointPipeline,
    line_pipeline: LinePipeline,
    #[cfg(feature = "selector")]
    outline_pass: OutlinePass,
    #[cfg(feature = "selector")]
    entity_id_pass: EntityIdPass,
}

impl MainPass {
    pub fn new(gpu: &Gpu, params: &RenderConfig, color_target_format: wgpu::TextureFormat, depth_target_format: wgpu::TextureFormat) -> Self {
        let mesh_pipeline = MeshPipeline::new(gpu, params, color_target_format, depth_target_format);
        let point_pipeline = PointPipeline::new(gpu, params, color_target_format, depth_target_format);
        let line_pipeline = LinePipeline::new(gpu, params, color_target_format, depth_target_format);
        #[cfg(feature = "selector")]
        let outline_pass = OutlinePass::new(gpu, params, color_target_format, depth_target_format);
        #[cfg(feature = "selector")]
        let entity_id_pass = EntityIdPass::new(gpu);
        Self {
            mesh_pipeline,
            point_pipeline,
            line_pipeline,
            #[cfg(feature = "selector")]
            outline_pass,
            #[cfg(feature = "selector")]
            entity_id_pass,
        }
    }

    /// # Panics
    /// Will panic if the gbuffer does not have the correct textures that are
    /// needed for the render pass
    #[allow(clippy::too_many_lines)]
    pub fn run(
        &mut self,
        gpu: &Gpu,
        per_frame_uniforms: &PerFrameUniforms,
        offscreen_fb: &FrameBuffer<OffscreenTarget>,
        out_view: &wgpu::TextureView,
        scene: &mut Scene,
        render_params: &RenderConfig,
    ) {
        self.begin_pass();

        //tonemap bg color
        let aces = gloss_utils::tonemap::AcesFitted::new();
        let bg_color_vec = render_params.bg_color.fixed_rows::<3>(0).clone_owned();
        let bg_color_tonemapped = aces.tonemap(&bg_color_vec);
        let bg_color_tonemapped_gamma = na::Vector3::from_iterator(bg_color_tonemapped.iter().map(|x| x.powf(1.0 / 2.2)));

        //queries have to live as long as the encoder so we put them outside of the
        // pipelines themselves this is because the encoder needs to have
        // reference to the vertex atributes and those atributes are only alive as long
        // as the query is also alive.
        let mut line_query = self.line_pipeline.prepare(gpu, per_frame_uniforms, scene);
        let mut mesh_query = self.mesh_pipeline.prepare(gpu, per_frame_uniforms, scene);
        let mut point_query = self.point_pipeline.prepare(gpu, per_frame_uniforms, scene);
        #[cfg(feature = "selector")]
        let mut outline_query = self.outline_pass.prepare(gpu, per_frame_uniforms, scene);
        #[cfg(feature = "selector")]
        let mut entity_id_query = self.entity_id_pass.prepare(gpu, per_frame_uniforms, scene);
        //do the actual rendering now
        let mut encoder = gpu.device().create_command_encoder(&wgpu::CommandEncoderDescriptor {
            label: Some("MainPass Encoder"),
        });
        {
            //check if the depth of color need clearing
            let color_clear_op = wgpu::LoadOp::Clear(wgpu::Color {
                r: f64::from(bg_color_tonemapped_gamma.x),
                g: f64::from(bg_color_tonemapped_gamma.y),
                b: f64::from(bg_color_tonemapped_gamma.z),
                a: f64::from(render_params.bg_color.w),
            });

            let mut selected_out_view = out_view;
            let mut store = wgpu::StoreOp::Store;
            let mut resolve_target = None;

            if render_params.msaa_nr_samples > 1 {
                resolve_target = Some(out_view);
                selected_out_view = &offscreen_fb.get(OffscreenTarget::MSAAColor).unwrap().view;
                store = wgpu::StoreOp::Discard; //No need to store the MSAA
                                                // results, since we never
                                                // sample from them again, we
                                                // just use them for resolving
            }
            // Main pass - to run the mesh, outline, point and line render passes
            {
                let mut render_pass = encoder.begin_render_pass(&wgpu::RenderPassDescriptor {
                    label: Some("Main Pass"),
                    color_attachments: &[Some(wgpu::RenderPassColorAttachment {
                        view: selected_out_view,
                        resolve_target,
                        ops: wgpu::Operations { load: color_clear_op, store },
                    })],
                    depth_stencil_attachment: Some(wgpu::RenderPassDepthStencilAttachment {
                        view: &offscreen_fb.get(OffscreenTarget::Depth).unwrap().view,
                        depth_ops: Some(wgpu::Operations {
                            load: wgpu::LoadOp::Clear(0.0),
                            store,
                        }),
                        stencil_ops: Some(wgpu::Operations {
                            load: wgpu::LoadOp::Clear(0),
                            store: wgpu::StoreOp::Store,
                        }),
                    }),
                    timestamp_writes: None,
                    occlusion_query_set: None,
                });
                self.mesh_pipeline
                    .run(&mut render_pass, per_frame_uniforms, render_params, &mut mesh_query, scene);
                self.point_pipeline
                    .run(&mut render_pass, per_frame_uniforms, render_params, &mut point_query, scene);
                self.line_pipeline
                    .run(&mut render_pass, per_frame_uniforms, render_params, &mut line_query, scene);
                // Run outline pass last so that its able to draw over the line and point passes (grid floor draws over outline otherwise)
                #[cfg(feature = "selector")]
                self.outline_pass
                    .run(&mut render_pass, per_frame_uniforms, render_params, &mut outline_query, scene);
            }

            // Run entity id pass if a click happened
            #[cfg(feature = "selector")]
            if let Some(camera) = scene.get_current_cam() {
                if camera.is_click(scene) {
                    let mut entity_id_pass = encoder.begin_render_pass(&wgpu::RenderPassDescriptor {
                        label: Some("Entity ID Pass"),
                        color_attachments: &[Some(wgpu::RenderPassColorAttachment {
                            view: &offscreen_fb.get(OffscreenTarget::EntityID).unwrap().view,
                            resolve_target: None,
                            ops: wgpu::Operations {
                                load: wgpu::LoadOp::Clear(wgpu::Color::TRANSPARENT),
                                store: wgpu::StoreOp::Store,
                            },
                        })],
                        depth_stencil_attachment: Some(wgpu::RenderPassDepthStencilAttachment {
                            view: &offscreen_fb.get(OffscreenTarget::SingleDepth).unwrap().view,
                            depth_ops: Some(wgpu::Operations {
                                load: wgpu::LoadOp::Clear(0.0),
                                store: wgpu::StoreOp::Discard,
                            }),
                            stencil_ops: Some(wgpu::Operations {
                                load: wgpu::LoadOp::Load,
                                store: wgpu::StoreOp::Discard,
                            }),
                        }),
                        timestamp_writes: None,
                        occlusion_query_set: None,
                    });
                    self.entity_id_pass
                        .run(&mut entity_id_pass, per_frame_uniforms, render_params, &mut entity_id_query, scene);
                }
            }
        }
        gpu.queue().submit(Some(encoder.finish()));

        self.end_pass();
    }

    fn begin_pass(&mut self) {
        trace!("begin main_pass");
    }

    fn end_pass(&mut self) {
        trace!("end main_pass");
    }
}