800 lines
27 KiB
Rust
800 lines
27 KiB
Rust
use crate::buffer_builder::BufferBuilder;
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use crate::buffer_pool::TexturePool;
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use crate::context3d::WgpuContext3D;
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use crate::mesh::{Mesh, PendingDraw};
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use crate::surface::Surface;
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use crate::target::RenderTargetFrame;
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use crate::target::TextureTarget;
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use crate::uniform_buffer::BufferStorage;
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use crate::{
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as_texture, format_list, get_backend_names, ColorAdjustments, Descriptors, Error,
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QueueSyncHandle, RenderTarget, SwapChainTarget, Texture, Transforms,
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};
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use gc_arena::MutationContext;
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use ruffle_render::backend::{Context3D, Context3DCommand};
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use ruffle_render::backend::{RenderBackend, ShapeHandle, ViewportDimensions};
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use ruffle_render::bitmap::{Bitmap, BitmapHandle, BitmapSource, SyncHandle};
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use ruffle_render::commands::CommandList;
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use ruffle_render::error::Error as BitmapError;
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use ruffle_render::filters::Filter;
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use ruffle_render::quality::StageQuality;
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use ruffle_render::shape_utils::DistilledShape;
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use ruffle_render::tessellator::ShapeTessellator;
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use std::borrow::Cow;
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use std::cell::Cell;
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use std::mem;
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use std::num::NonZeroU32;
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use std::path::Path;
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use std::sync::Arc;
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use swf::Color;
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use tracing::instrument;
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use wgpu::Extent3d;
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pub struct WgpuRenderBackend<T: RenderTarget> {
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descriptors: Arc<Descriptors>,
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uniform_buffers_storage: BufferStorage<Transforms>,
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color_buffers_storage: BufferStorage<ColorAdjustments>,
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target: T,
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surface: Surface,
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meshes: Vec<Mesh>,
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shape_tessellator: ShapeTessellator,
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// This is currently unused - we just store it to report in
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// `get_viewport_dimensions`
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viewport_scale_factor: f64,
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texture_pool: TexturePool,
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offscreen_texture_pool: TexturePool,
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}
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impl WgpuRenderBackend<SwapChainTarget> {
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#[cfg(target_family = "wasm")]
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pub async fn for_canvas(canvas: &web_sys::HtmlCanvasElement) -> Result<Self, Error> {
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let instance = wgpu::Instance::new(wgpu::InstanceDescriptor {
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backends: wgpu::Backends::BROWSER_WEBGPU | wgpu::Backends::GL,
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dx12_shader_compiler: wgpu::Dx12Compiler::default(),
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});
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let surface = instance.create_surface_from_canvas(canvas)?;
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let (adapter, device, queue) = Self::request_device(
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wgpu::Backends::BROWSER_WEBGPU | wgpu::Backends::GL,
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instance,
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Some(&surface),
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wgpu::PowerPreference::HighPerformance,
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None,
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)
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.await?;
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let descriptors = Descriptors::new(adapter, device, queue);
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let target =
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SwapChainTarget::new(surface, &descriptors.adapter, (1, 1), &descriptors.device);
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Self::new(Arc::new(descriptors), target)
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}
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#[cfg(not(target_family = "wasm"))]
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pub fn for_window<
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W: raw_window_handle::HasRawWindowHandle + raw_window_handle::HasRawDisplayHandle,
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>(
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window: &W,
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size: (u32, u32),
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backend: wgpu::Backends,
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power_preference: wgpu::PowerPreference,
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trace_path: Option<&Path>,
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) -> Result<Self, Error> {
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if wgpu::Backends::SECONDARY.contains(backend) {
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tracing::warn!(
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"{} graphics backend support may not be fully supported.",
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format_list(&get_backend_names(backend), "and")
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);
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}
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let instance = wgpu::Instance::new(wgpu::InstanceDescriptor {
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backends: backend,
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dx12_shader_compiler: wgpu::Dx12Compiler::default(),
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});
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let surface = unsafe { instance.create_surface(window) }?;
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let (adapter, device, queue) = futures::executor::block_on(Self::request_device(
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backend,
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instance,
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Some(&surface),
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power_preference,
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trace_path,
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))?;
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let descriptors = Descriptors::new(adapter, device, queue);
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let target = SwapChainTarget::new(surface, &descriptors.adapter, size, &descriptors.device);
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Self::new(Arc::new(descriptors), target)
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}
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}
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#[cfg(not(target_family = "wasm"))]
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impl WgpuRenderBackend<crate::target::TextureTarget> {
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pub fn for_offscreen(
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size: (u32, u32),
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backend: wgpu::Backends,
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power_preference: wgpu::PowerPreference,
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trace_path: Option<&Path>,
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) -> Result<Self, Error> {
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if wgpu::Backends::SECONDARY.contains(backend) {
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tracing::warn!(
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"{} graphics backend support may not be fully supported.",
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format_list(&get_backend_names(backend), "and")
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);
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}
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let instance = wgpu::Instance::new(wgpu::InstanceDescriptor {
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backends: backend,
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dx12_shader_compiler: wgpu::Dx12Compiler::default(),
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});
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let (adapter, device, queue) = futures::executor::block_on(Self::request_device(
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backend,
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instance,
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None,
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power_preference,
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trace_path,
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))?;
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let descriptors = Descriptors::new(adapter, device, queue);
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let target = crate::target::TextureTarget::new(&descriptors.device, size)?;
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Self::new(Arc::new(descriptors), target)
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}
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pub fn capture_frame(&self, premultiplied_alpha: bool) -> Option<image::RgbaImage> {
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use crate::utils::buffer_to_image;
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if let Some((buffer, dimensions)) = &self.target.buffer {
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Some(buffer_to_image(
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&self.descriptors.device,
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buffer,
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dimensions,
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None,
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self.target.size,
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premultiplied_alpha,
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))
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} else {
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None
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}
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}
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}
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impl<T: RenderTarget> WgpuRenderBackend<T> {
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pub fn new(descriptors: Arc<Descriptors>, target: T) -> Result<Self, Error> {
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if target.width() > descriptors.limits.max_texture_dimension_2d
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|| target.height() > descriptors.limits.max_texture_dimension_2d
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{
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return Err(format!(
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"Render target texture cannot be larger than {}px on either dimension (requested {} x {})",
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descriptors.limits.max_texture_dimension_2d,
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target.width(),
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target.height()
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)
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.into());
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}
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let surface = Surface::new(
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&descriptors,
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StageQuality::Low,
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target.width(),
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target.height(),
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target.format(),
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);
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let uniform_buffers_storage =
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BufferStorage::from_alignment(descriptors.limits.min_uniform_buffer_offset_alignment);
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let color_buffers_storage =
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BufferStorage::from_alignment(descriptors.limits.min_uniform_buffer_offset_alignment);
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Ok(Self {
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descriptors,
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uniform_buffers_storage,
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color_buffers_storage,
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target,
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surface,
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meshes: Vec::new(),
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shape_tessellator: ShapeTessellator::new(),
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viewport_scale_factor: 1.0,
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texture_pool: TexturePool::new(),
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offscreen_texture_pool: TexturePool::new(),
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})
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}
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pub async fn request_device(
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backend: wgpu::Backends,
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instance: wgpu::Instance,
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surface: Option<&wgpu::Surface>,
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power_preference: wgpu::PowerPreference,
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trace_path: Option<&Path>,
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) -> Result<(wgpu::Adapter, wgpu::Device, wgpu::Queue), Error> {
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let adapter = instance.request_adapter(&wgpu::RequestAdapterOptions {
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power_preference,
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compatible_surface: surface,
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force_fallback_adapter: false,
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}).await
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.ok_or_else(|| {
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let names = get_backend_names(backend);
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if names.is_empty() {
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"Ruffle requires hardware acceleration, but no compatible graphics device was found (no backend provided?)".to_string()
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} else if cfg!(any(windows, target_os = "macos")) {
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format!("Ruffle does not support OpenGL on {}.", if cfg!(windows) { "Windows" } else { "macOS" })
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} else {
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format!("Ruffle requires hardware acceleration, but no compatible graphics device was found supporting {}", format_list(&names, "or"))
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}
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})?;
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let (device, queue) = request_device(&adapter, trace_path).await?;
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Ok((adapter, device, queue))
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}
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fn register_shape_internal(
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&mut self,
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shape: DistilledShape,
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bitmap_source: &dyn BitmapSource,
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) -> Mesh {
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let shape_id = shape.id;
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let lyon_mesh = self
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.shape_tessellator
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.tessellate_shape(shape, bitmap_source);
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let mut draws = Vec::with_capacity(lyon_mesh.len());
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let mut uniform_buffer = BufferBuilder::new(
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self.descriptors.limits.min_uniform_buffer_offset_alignment as usize,
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);
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let mut vertex_buffer = BufferBuilder::new(0);
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let mut index_buffer = BufferBuilder::new(0);
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for draw in lyon_mesh {
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let draw_id = draws.len();
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if let Some(draw) = PendingDraw::new(
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self,
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bitmap_source,
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draw,
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shape_id,
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draw_id,
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&mut uniform_buffer,
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&mut vertex_buffer,
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&mut index_buffer,
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) {
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draws.push(draw);
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}
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}
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let uniform_buffer = uniform_buffer.finish(
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&self.descriptors.device,
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create_debug_label!("Shape {} uniforms", shape_id),
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wgpu::BufferUsages::UNIFORM,
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);
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let vertex_buffer = vertex_buffer.finish(
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&self.descriptors.device,
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create_debug_label!("Shape {} vertices", shape_id),
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wgpu::BufferUsages::VERTEX,
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);
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let index_buffer = index_buffer.finish(
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&self.descriptors.device,
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create_debug_label!("Shape {} indices", shape_id),
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wgpu::BufferUsages::INDEX,
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);
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let draws = draws
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.into_iter()
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.map(|d| d.finish(&self.descriptors, &uniform_buffer))
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.collect();
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Mesh {
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draws,
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vertex_buffer,
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index_buffer,
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}
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}
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pub fn descriptors(&self) -> &Arc<Descriptors> {
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&self.descriptors
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}
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pub fn target(&self) -> &T {
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&self.target
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}
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pub fn device(&self) -> &wgpu::Device {
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&self.descriptors.device
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}
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}
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impl<T: RenderTarget + 'static> RenderBackend for WgpuRenderBackend<T> {
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fn set_viewport_dimensions(&mut self, dimensions: ViewportDimensions) {
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// Avoid panics from creating 0-sized framebuffers.
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// TODO: find a way to bubble an error when the size is too large
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let width = std::cmp::max(
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std::cmp::min(
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dimensions.width,
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self.descriptors.limits.max_texture_dimension_2d,
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),
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1,
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);
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let height = std::cmp::max(
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std::cmp::min(
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dimensions.height,
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self.descriptors.limits.max_texture_dimension_2d,
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),
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1,
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);
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self.target.resize(&self.descriptors.device, width, height);
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self.surface = Surface::new(
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&self.descriptors,
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self.surface.quality(),
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width,
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height,
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self.target.format(),
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);
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self.viewport_scale_factor = dimensions.scale_factor;
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self.texture_pool = TexturePool::new();
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}
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fn create_context3d(
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&mut self,
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) -> Result<Box<dyn ruffle_render::backend::Context3D>, BitmapError> {
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let texture_label = create_debug_label!("Render target texture");
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let format = wgpu::TextureFormat::Rgba8Unorm;
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let dummy_texture = self
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.descriptors
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.device
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.create_texture(&wgpu::TextureDescriptor {
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label: texture_label.as_deref(),
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size: Extent3d {
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width: 1,
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height: 1,
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depth_or_array_layers: 1,
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},
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mip_level_count: 1,
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sample_count: 1,
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dimension: wgpu::TextureDimension::D2,
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format,
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view_formats: &[format],
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usage: wgpu::TextureUsages::COPY_SRC,
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});
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let handle = BitmapHandle(Arc::new(Texture {
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bind_linear: Default::default(),
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bind_nearest: Default::default(),
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texture: Arc::new(dummy_texture),
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texture_offscreen: Default::default(),
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width: 0,
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height: 0,
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copy_count: Cell::new(0),
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}));
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Ok(Box::new(WgpuContext3D::new(
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self.descriptors.clone(),
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handle,
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)))
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}
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#[instrument(level = "debug", skip_all)]
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fn context3d_present<'gc>(
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&mut self,
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context: &mut dyn Context3D,
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commands: Vec<Context3DCommand<'gc>>,
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mc: MutationContext<'gc, '_>,
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) -> Result<(), BitmapError> {
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let context = context
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.as_any_mut()
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.downcast_mut::<WgpuContext3D>()
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.unwrap();
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context.present(commands, mc);
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Ok(())
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}
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fn debug_info(&self) -> Cow<'static, str> {
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let mut result = vec![];
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result.push("Renderer: wgpu".to_string());
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let info = self.descriptors.adapter.get_info();
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result.push(format!("Adapter Backend: {:?}", info.backend));
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result.push(format!("Adapter Name: {:?}", info.name));
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result.push(format!("Adapter Device Type: {:?}", info.device_type));
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result.push(format!("Adapter Driver Name: {:?}", info.driver));
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result.push(format!("Adapter Driver Info: {:?}", info.driver_info));
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let enabled_features = self.descriptors.device.features();
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let available_features = self.descriptors.adapter.features() - enabled_features;
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let current_limits = &self.descriptors.limits;
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result.push(format!("Enabled features: {enabled_features:?}"));
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result.push(format!("Available features: {available_features:?}"));
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result.push(format!("Current limits: {current_limits:?}"));
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result.push(format!("Surface quality: {}", self.surface.quality()));
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result.push(format!("Surface samples: {}", self.surface.sample_count()));
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result.push(format!("Surface size: {:?}", self.surface.size()));
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Cow::Owned(result.join("\n"))
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}
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fn set_quality(&mut self, quality: StageQuality) {
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self.surface = Surface::new(
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&self.descriptors,
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quality,
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self.surface.size().width,
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self.surface.size().height,
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self.target.format(),
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);
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}
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fn viewport_dimensions(&self) -> ViewportDimensions {
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ViewportDimensions {
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width: self.target.width(),
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height: self.target.height(),
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scale_factor: self.viewport_scale_factor,
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}
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}
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#[instrument(level = "debug", skip_all)]
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fn register_shape(
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&mut self,
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shape: DistilledShape,
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bitmap_source: &dyn BitmapSource,
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) -> ShapeHandle {
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let handle = ShapeHandle(self.meshes.len());
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let mesh = self.register_shape_internal(shape, bitmap_source);
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self.meshes.push(mesh);
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handle
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}
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#[instrument(level = "debug", skip_all)]
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fn replace_shape(
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&mut self,
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shape: DistilledShape,
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bitmap_source: &dyn BitmapSource,
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handle: ShapeHandle,
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) {
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let mesh = self.register_shape_internal(shape, bitmap_source);
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self.meshes[handle.0] = mesh;
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}
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#[instrument(level = "debug", skip_all)]
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fn register_glyph_shape(&mut self, glyph: &swf::Glyph) -> ShapeHandle {
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let shape = ruffle_render::shape_utils::swf_glyph_to_shape(glyph);
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let handle = ShapeHandle(self.meshes.len());
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let mesh = self.register_shape_internal(
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(&shape).into(),
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&ruffle_render::backend::null::NullBitmapSource,
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);
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self.meshes.push(mesh);
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handle
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}
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#[instrument(level = "debug", skip_all)]
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fn submit_frame(&mut self, clear: Color, commands: CommandList) {
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let frame_output = match self.target.get_next_texture() {
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Ok(frame) => frame,
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Err(e) => {
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tracing::warn!("Couldn't begin new render frame: {}", e);
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// Attempt to recreate the swap chain in this case.
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self.target.resize(
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&self.descriptors.device,
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self.target.width(),
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self.target.height(),
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);
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return;
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}
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};
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let command_buffers = self.surface.draw_commands_to(
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frame_output.view(),
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RenderTargetMode::FreshBuffer(wgpu::Color {
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r: f64::from(clear.r) / 255.0,
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g: f64::from(clear.g) / 255.0,
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b: f64::from(clear.b) / 255.0,
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a: f64::from(clear.a) / 255.0,
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}),
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&self.descriptors,
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&mut self.uniform_buffers_storage,
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&mut self.color_buffers_storage,
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&self.meshes,
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commands,
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&mut self.texture_pool,
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);
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self.target.submit(
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&self.descriptors.device,
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&self.descriptors.queue,
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command_buffers,
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frame_output,
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);
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self.uniform_buffers_storage.recall();
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self.color_buffers_storage.recall();
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self.offscreen_texture_pool = TexturePool::new();
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}
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#[instrument(level = "debug", skip_all)]
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fn register_bitmap(&mut self, bitmap: Bitmap) -> Result<BitmapHandle, BitmapError> {
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if bitmap.width() > self.descriptors.limits.max_texture_dimension_2d
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|| bitmap.height() > self.descriptors.limits.max_texture_dimension_2d
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{
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return Err(BitmapError::TooLarge);
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}
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|
|
|
let bitmap = bitmap.to_rgba();
|
|
let extent = wgpu::Extent3d {
|
|
width: bitmap.width(),
|
|
height: bitmap.height(),
|
|
depth_or_array_layers: 1,
|
|
};
|
|
|
|
let texture_label = create_debug_label!("Bitmap");
|
|
let texture = self
|
|
.descriptors
|
|
.device
|
|
.create_texture(&wgpu::TextureDescriptor {
|
|
label: texture_label.as_deref(),
|
|
size: extent,
|
|
mip_level_count: 1,
|
|
sample_count: 1,
|
|
dimension: wgpu::TextureDimension::D2,
|
|
format: wgpu::TextureFormat::Rgba8Unorm,
|
|
view_formats: &[wgpu::TextureFormat::Rgba8Unorm],
|
|
usage: wgpu::TextureUsages::TEXTURE_BINDING
|
|
| wgpu::TextureUsages::COPY_DST
|
|
| wgpu::TextureUsages::RENDER_ATTACHMENT
|
|
| wgpu::TextureUsages::COPY_SRC,
|
|
});
|
|
|
|
self.descriptors.queue.write_texture(
|
|
wgpu::ImageCopyTexture {
|
|
texture: &texture,
|
|
mip_level: 0,
|
|
origin: Default::default(),
|
|
aspect: wgpu::TextureAspect::All,
|
|
},
|
|
bitmap.data(),
|
|
wgpu::ImageDataLayout {
|
|
offset: 0,
|
|
bytes_per_row: NonZeroU32::new(4 * extent.width),
|
|
rows_per_image: None,
|
|
},
|
|
extent,
|
|
);
|
|
|
|
let handle = BitmapHandle(Arc::new(Texture {
|
|
texture: Arc::new(texture),
|
|
bind_linear: Default::default(),
|
|
bind_nearest: Default::default(),
|
|
texture_offscreen: Default::default(),
|
|
width: bitmap.width(),
|
|
height: bitmap.height(),
|
|
copy_count: Cell::new(0),
|
|
}));
|
|
|
|
Ok(handle)
|
|
}
|
|
|
|
#[instrument(level = "debug", skip_all)]
|
|
fn update_texture(
|
|
&mut self,
|
|
handle: &BitmapHandle,
|
|
width: u32,
|
|
height: u32,
|
|
rgba: Vec<u8>,
|
|
) -> Result<(), BitmapError> {
|
|
let texture = as_texture(handle);
|
|
|
|
let extent = wgpu::Extent3d {
|
|
width,
|
|
height,
|
|
depth_or_array_layers: 1,
|
|
};
|
|
|
|
self.descriptors.queue.write_texture(
|
|
wgpu::ImageCopyTexture {
|
|
texture: &texture.texture,
|
|
mip_level: 0,
|
|
origin: Default::default(),
|
|
aspect: wgpu::TextureAspect::All,
|
|
},
|
|
&rgba,
|
|
wgpu::ImageDataLayout {
|
|
offset: 0,
|
|
bytes_per_row: NonZeroU32::new(4 * extent.width),
|
|
rows_per_image: None,
|
|
},
|
|
extent,
|
|
);
|
|
|
|
Ok(())
|
|
}
|
|
|
|
#[instrument(level = "debug", skip_all)]
|
|
fn render_offscreen(
|
|
&mut self,
|
|
handle: BitmapHandle,
|
|
width: u32,
|
|
height: u32,
|
|
commands: CommandList,
|
|
quality: StageQuality,
|
|
) -> Option<Box<dyn SyncHandle>> {
|
|
let texture = as_texture(&handle);
|
|
|
|
let extent = wgpu::Extent3d {
|
|
width,
|
|
height,
|
|
depth_or_array_layers: 1,
|
|
};
|
|
|
|
let texture_offscreen = texture.texture_offscreen.get();
|
|
|
|
let mut target = TextureTarget {
|
|
size: extent,
|
|
texture: texture.texture.clone(),
|
|
format: wgpu::TextureFormat::Rgba8Unorm,
|
|
buffer: texture_offscreen.map(|t| (t.buffer.clone(), t.buffer_dimensions.clone())),
|
|
};
|
|
|
|
let frame_output = target
|
|
.get_next_texture()
|
|
.expect("TextureTargetFrame.get_next_texture is infallible");
|
|
|
|
let mut surface = Surface::new(
|
|
&self.descriptors,
|
|
quality,
|
|
width,
|
|
height,
|
|
wgpu::TextureFormat::Rgba8Unorm,
|
|
);
|
|
let command_buffers = surface.draw_commands_to(
|
|
frame_output.view(),
|
|
RenderTargetMode::ExistingTexture(target.get_texture()),
|
|
&self.descriptors,
|
|
&mut self.uniform_buffers_storage,
|
|
&mut self.color_buffers_storage,
|
|
&self.meshes,
|
|
commands,
|
|
&mut self.offscreen_texture_pool,
|
|
);
|
|
let index = target.submit(
|
|
&self.descriptors.device,
|
|
&self.descriptors.queue,
|
|
command_buffers,
|
|
frame_output,
|
|
);
|
|
self.uniform_buffers_storage.recall();
|
|
self.color_buffers_storage.recall();
|
|
|
|
match texture_offscreen {
|
|
Some(texture_offscreen) => Some(Box::new(QueueSyncHandle::AlreadyCopied {
|
|
index,
|
|
size: target.size,
|
|
buffer: texture_offscreen.buffer.clone(),
|
|
buffer_dimensions: texture_offscreen.buffer_dimensions.clone(),
|
|
descriptors: self.descriptors.clone(),
|
|
})),
|
|
None => Some(Box::new(QueueSyncHandle::NotCopied {
|
|
handle: handle.clone(),
|
|
size: target.size,
|
|
descriptors: self.descriptors.clone(),
|
|
})),
|
|
}
|
|
}
|
|
|
|
fn apply_filter(
|
|
&mut self,
|
|
source: BitmapHandle,
|
|
source_point: (u32, u32),
|
|
source_size: (u32, u32),
|
|
destination: BitmapHandle,
|
|
dest_point: (u32, u32),
|
|
filter: Filter,
|
|
) -> Option<Box<dyn SyncHandle>> {
|
|
let source_texture = as_texture(&source);
|
|
let dest_texture = as_texture(&destination);
|
|
|
|
let mut target = TextureTarget {
|
|
size: wgpu::Extent3d {
|
|
width: dest_texture.width,
|
|
height: dest_texture.height,
|
|
depth_or_array_layers: 1,
|
|
},
|
|
texture: dest_texture.texture.clone(),
|
|
format: wgpu::TextureFormat::Rgba8Unorm,
|
|
buffer: dest_texture
|
|
.texture_offscreen
|
|
.get()
|
|
.map(|t| (t.buffer.clone(), t.buffer_dimensions.clone())),
|
|
};
|
|
let texture_offscreen = dest_texture.texture_offscreen.get();
|
|
let frame_output = target
|
|
.get_next_texture()
|
|
.expect("TextureTargetFrame.get_next_texture is infallible");
|
|
let surface = Surface::new(
|
|
&self.descriptors,
|
|
self.surface.quality(),
|
|
dest_texture.width,
|
|
dest_texture.height,
|
|
wgpu::TextureFormat::Rgba8Unorm,
|
|
);
|
|
let label = create_debug_label!("Draw encoder");
|
|
let mut draw_encoder =
|
|
self.descriptors
|
|
.device
|
|
.create_command_encoder(&wgpu::CommandEncoderDescriptor {
|
|
label: label.as_deref(),
|
|
});
|
|
surface.apply_filter(
|
|
&self.descriptors,
|
|
&mut draw_encoder,
|
|
&mut self.offscreen_texture_pool,
|
|
source_texture,
|
|
source_point,
|
|
source_size,
|
|
dest_texture,
|
|
dest_point,
|
|
filter,
|
|
);
|
|
let index = target.submit(
|
|
&self.descriptors.device,
|
|
&self.descriptors.queue,
|
|
Some(draw_encoder.finish()),
|
|
frame_output,
|
|
);
|
|
match texture_offscreen {
|
|
Some(texture_offscreen) => Some(Box::new(QueueSyncHandle::AlreadyCopied {
|
|
index,
|
|
size: target.size,
|
|
buffer: texture_offscreen.buffer.clone(),
|
|
buffer_dimensions: texture_offscreen.buffer_dimensions.clone(),
|
|
descriptors: self.descriptors.clone(),
|
|
})),
|
|
None => Some(Box::new(QueueSyncHandle::NotCopied {
|
|
handle: destination.clone(),
|
|
size: target.size,
|
|
descriptors: self.descriptors.clone(),
|
|
})),
|
|
}
|
|
}
|
|
}
|
|
|
|
// We try to request the highest limits we can get away with
|
|
async fn request_device(
|
|
adapter: &wgpu::Adapter,
|
|
trace_path: Option<&Path>,
|
|
) -> Result<(wgpu::Device, wgpu::Queue), wgpu::RequestDeviceError> {
|
|
// We start off with the lowest limits we actually need - basically GL-ES 3.0
|
|
let mut limits = wgpu::Limits::downlevel_webgl2_defaults();
|
|
// Then we increase parts of it to the maximum supported by the adapter, to take advantage of
|
|
// more powerful hardware or capabilities
|
|
limits = limits.using_resolution(adapter.limits());
|
|
limits = limits.using_alignment(adapter.limits());
|
|
|
|
let mut features = Default::default();
|
|
|
|
let needed_size = (mem::size_of::<Transforms>() + mem::size_of::<ColorAdjustments>()) as u32;
|
|
if adapter.features().contains(wgpu::Features::PUSH_CONSTANTS)
|
|
&& adapter.limits().max_push_constant_size >= needed_size
|
|
{
|
|
limits.max_push_constant_size = needed_size;
|
|
features |= wgpu::Features::PUSH_CONSTANTS;
|
|
}
|
|
|
|
if adapter
|
|
.features()
|
|
.contains(wgpu::Features::TEXTURE_ADAPTER_SPECIFIC_FORMAT_FEATURES)
|
|
{
|
|
features |= wgpu::Features::TEXTURE_ADAPTER_SPECIFIC_FORMAT_FEATURES;
|
|
}
|
|
|
|
adapter
|
|
.request_device(
|
|
&wgpu::DeviceDescriptor {
|
|
label: None,
|
|
features,
|
|
limits,
|
|
},
|
|
trace_path,
|
|
)
|
|
.await
|
|
}
|
|
|
|
/// Determines how we choose our frame buffer
|
|
#[derive(Clone)]
|
|
pub enum RenderTargetMode {
|
|
// Construct a new frame buffer, clearng it with the provided color.
|
|
// This is used when rendering to the actual display,
|
|
// or when applying a filter. In both cases, we have a fixed background color,
|
|
// and don't need to blend with anything else
|
|
FreshBuffer(wgpu::Color),
|
|
// Use the provided texture as our frame buffer. During rendering,
|
|
// we will blend with the previous contents of the texture.
|
|
// This is used in `render_offscreen`, as we need to blend with the previous
|
|
// contents of our `BitmapData` texture
|
|
ExistingTexture(Arc<wgpu::Texture>),
|
|
}
|