grafo 0.16.1

A GPU-accelerated rendering library for Rust
Documentation 
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use super::*;

impl<'a> Renderer<'a> {
    pub fn size(&self) -> (u32, u32) {
        self.physical_size
    }

    pub fn change_scale_factor(&mut self, new_scale_factor: f64) {
        self.scale_factor = new_scale_factor;
        self.resize(self.physical_size)
    }

    pub fn scale_factor(&self) -> f64 {
        self.scale_factor
    }

    pub fn set_fringe_width(&mut self, fringe_width: f32) {
        self.fringe_width = fringe_width;
        self.resize(self.physical_size);
    }

    pub fn fringe_width(&self) -> f32 {
        self.fringe_width
    }

    pub fn resize(&mut self, new_physical_size: (u32, u32)) {
        self.physical_size = new_physical_size;
        self.config.width = new_physical_size.0;
        self.config.height = new_physical_size.1;

        let logical_size = to_logical(new_physical_size, self.scale_factor);
        self.and_uniforms.canvas_size = [logical_size.0, logical_size.1];
        self.and_uniforms.scale_factor = self.scale_factor as f32;
        self.and_uniforms.fringe_width = self.fringe_width;

        self.decrementing_uniforms.canvas_size = [logical_size.0, logical_size.1];
        self.decrementing_uniforms.scale_factor = self.scale_factor as f32;
        self.decrementing_uniforms.fringe_width = self.fringe_width;

        self.queue.write_buffer(
            &self.and_uniform_buffer,
            0,
            bytemuck::cast_slice(&[self.and_uniforms]),
        );
        self.queue.write_buffer(
            &self.decrementing_uniform_buffer,
            0,
            bytemuck::cast_slice(&[self.decrementing_uniforms]),
        );

        if let Some(surface) = &self.surface {
            surface.configure(&self.device, &self.config);
        }
        self.recreate_msaa_texture();
        self.recreate_depth_stencil_texture();

        self.offscreen_texture_pool.trim(
            new_physical_size.0,
            new_physical_size.1,
            self.msaa_sample_count,
        );
        self.trim_scratch_on_resize_or_policy();
    }

    pub fn msaa_samples(&self) -> u32 {
        self.msaa_sample_count
    }

    pub fn set_msaa_samples(&mut self, samples: u32) {
        let validated = Self::validate_sample_count_static(samples);
        if validated == self.msaa_sample_count {
            return;
        }

        self.msaa_sample_count = validated;
        self.recreate_pipelines();
        self.recreate_msaa_texture();
        self.recreate_depth_stencil_texture();
    }

    pub(super) fn validate_sample_count_static(requested: u32) -> u32 {
        match requested {
            0 | 1 => 1,
            2..=4 => 4,
            _ => {
                warn!(
                    "Requested MSAA sample count {} is not widely supported, clamping to 4",
                    requested
                );
                4
            }
        }
    }

    pub(super) fn recreate_msaa_texture(&mut self) {
        if self.msaa_sample_count > 1 {
            let texture = create_msaa_color_texture(
                &self.device,
                self.physical_size,
                self.config.format,
                self.msaa_sample_count,
            );
            let view = texture.create_view(&wgpu::TextureViewDescriptor::default());
            self.msaa_color_texture = Some(texture);
            self.msaa_color_texture_view = Some(view);
        } else {
            self.msaa_color_texture = None;
            self.msaa_color_texture_view = None;
        }

        self.texture_blit_pipeline = None;
        self.stencil_only_pipeline = None;
        self.backdrop_color_pipeline = None;
        self.backdrop_color_gradient_pipeline = None;

        self.offscreen_texture_pool.trim(
            self.physical_size.0,
            self.physical_size.1,
            self.msaa_sample_count,
        );
        self.trim_scratch_on_resize_or_policy();
    }

    /// Recreate the cached depth/stencil texture to match current physical size and MSAA settings.
    pub(super) fn recreate_depth_stencil_texture(&mut self) {
        let texture =
            create_and_depth_texture(&self.device, self.physical_size, self.msaa_sample_count);
        let view = texture.create_view(&wgpu::TextureViewDescriptor::default());
        self.depth_stencil_texture = Some(texture);
        self.depth_stencil_view = Some(view);
    }

    pub fn set_surface(&mut self, window: impl Into<SurfaceTarget<'static>>) {
        let surface = self
            .instance
            .create_surface(window)
            .expect("Failed to create surface");
        surface.configure(&self.device, &self.config);
        self.surface = Some(surface);
    }

    pub fn set_vsync(&mut self, vsync: bool) {
        self.config.present_mode = if vsync {
            wgpu::PresentMode::AutoVsync
        } else {
            wgpu::PresentMode::AutoNoVsync
        };
        if let Some(surface) = &self.surface {
            surface.configure(&self.device, &self.config);
        }
    }
}