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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
//! Rendering logic related to the vertex shaders and their states, uncluding
//! - Vertex Array Objects
//! - vertex layout descriptors
//! - textures bound at vertex stage
use std::{marker::PhantomData, mem, num::NonZeroUsize, ops};
use api::units::*;
use crate::{
device::{
Device, Texture, TextureFilter, TextureUploader, UploadPBOPool, VertexUsageHint, VAO,
},
frame_builder::Frame,
gpu_types::{PrimitiveHeaderI, PrimitiveHeaderF, TransformData},
internal_types::Swizzle,
render_task::RenderTaskData,
};
pub const VERTEX_TEXTURE_EXTRA_ROWS: i32 = 10;
pub const MAX_VERTEX_TEXTURE_WIDTH: usize = webrender_build::MAX_VERTEX_TEXTURE_WIDTH;
pub mod desc {
use crate::device::{VertexAttribute, VertexAttributeKind, VertexDescriptor};
pub const PRIM_INSTANCES: VertexDescriptor = VertexDescriptor {
vertex_attributes: &[VertexAttribute {
name: "aPosition",
count: 2,
kind: VertexAttributeKind::U8Norm,
}],
instance_attributes: &[VertexAttribute {
name: "aData",
count: 4,
kind: VertexAttributeKind::I32,
}],
};
pub const BLUR: VertexDescriptor = VertexDescriptor {
vertex_attributes: &[VertexAttribute {
name: "aPosition",
count: 2,
kind: VertexAttributeKind::U8Norm,
}],
instance_attributes: &[
VertexAttribute {
name: "aBlurRenderTaskAddress",
count: 1,
kind: VertexAttributeKind::I32,
},
VertexAttribute {
name: "aBlurSourceTaskAddress",
count: 1,
kind: VertexAttributeKind::I32,
},
VertexAttribute {
name: "aBlurDirection",
count: 1,
kind: VertexAttributeKind::I32,
},
],
};
pub const LINE: VertexDescriptor = VertexDescriptor {
vertex_attributes: &[VertexAttribute {
name: "aPosition",
count: 2,
kind: VertexAttributeKind::U8Norm,
}],
instance_attributes: &[
VertexAttribute {
name: "aTaskRect",
count: 4,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aLocalSize",
count: 2,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aWavyLineThickness",
count: 1,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aStyle",
count: 1,
kind: VertexAttributeKind::I32,
},
VertexAttribute {
name: "aAxisSelect",
count: 1,
kind: VertexAttributeKind::F32,
},
],
};
pub const FAST_LINEAR_GRADIENT: VertexDescriptor = VertexDescriptor {
vertex_attributes: &[VertexAttribute {
name: "aPosition",
count: 2,
kind: VertexAttributeKind::U8Norm,
}],
instance_attributes: &[
VertexAttribute {
name: "aTaskRect",
count: 4,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aColor0",
count: 4,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aColor1",
count: 4,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aAxisSelect",
count: 1,
kind: VertexAttributeKind::F32,
},
],
};
pub const LINEAR_GRADIENT: VertexDescriptor = VertexDescriptor {
vertex_attributes: &[VertexAttribute {
name: "aPosition",
count: 2,
kind: VertexAttributeKind::U8Norm,
}],
instance_attributes: &[
VertexAttribute {
name: "aTaskRect",
count: 4,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aStartPoint",
count: 2,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aEndPoint",
count: 2,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aScale",
count: 2,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aExtendMode",
count: 1,
kind: VertexAttributeKind::I32,
},
VertexAttribute {
name: "aGradientStopsAddress",
count: 1,
kind: VertexAttributeKind::I32,
},
],
};
pub const RADIAL_GRADIENT: VertexDescriptor = VertexDescriptor {
vertex_attributes: &[VertexAttribute {
name: "aPosition",
count: 2,
kind: VertexAttributeKind::U8Norm,
}],
instance_attributes: &[
VertexAttribute {
name: "aTaskRect",
count: 4,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aCenter",
count: 2,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aScale",
count: 2,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aStartRadius",
count: 1,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aEndRadius",
count: 1,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aXYRatio",
count: 1,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aExtendMode",
count: 1,
kind: VertexAttributeKind::I32,
},
VertexAttribute {
name: "aGradientStopsAddress",
count: 1,
kind: VertexAttributeKind::I32,
},
],
};
pub const CONIC_GRADIENT: VertexDescriptor = VertexDescriptor {
vertex_attributes: &[VertexAttribute {
name: "aPosition",
count: 2,
kind: VertexAttributeKind::U8Norm,
}],
instance_attributes: &[
VertexAttribute {
name: "aTaskRect",
count: 4,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aCenter",
count: 2,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aScale",
count: 2,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aStartOffset",
count: 1,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aEndOffset",
count: 1,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aAngle",
count: 1,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aExtendMode",
count: 1,
kind: VertexAttributeKind::I32,
},
VertexAttribute {
name: "aGradientStopsAddress",
count: 1,
kind: VertexAttributeKind::I32,
},
],
};
pub const BORDER: VertexDescriptor = VertexDescriptor {
vertex_attributes: &[VertexAttribute {
name: "aPosition",
count: 2,
kind: VertexAttributeKind::U8Norm,
}],
instance_attributes: &[
VertexAttribute {
name: "aTaskOrigin",
count: 2,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aRect",
count: 4,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aColor0",
count: 4,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aColor1",
count: 4,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aFlags",
count: 1,
kind: VertexAttributeKind::I32,
},
VertexAttribute {
name: "aWidths",
count: 2,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aRadii",
count: 2,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aClipParams1",
count: 4,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aClipParams2",
count: 4,
kind: VertexAttributeKind::F32,
},
],
};
pub const SCALE: VertexDescriptor = VertexDescriptor {
vertex_attributes: &[VertexAttribute {
name: "aPosition",
count: 2,
kind: VertexAttributeKind::U8Norm,
}],
instance_attributes: &[
VertexAttribute {
name: "aScaleTargetRect",
count: 4,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aScaleSourceRect",
count: 4,
kind: VertexAttributeKind::F32,
},
],
};
pub const CLIP_RECT: VertexDescriptor = VertexDescriptor {
vertex_attributes: &[VertexAttribute {
name: "aPosition",
count: 2,
kind: VertexAttributeKind::U8Norm,
}],
instance_attributes: &[
// common clip attributes
VertexAttribute {
name: "aClipDeviceArea",
count: 4,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aClipOrigins",
count: 4,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aDevicePixelScale",
count: 1,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aTransformIds",
count: 2,
kind: VertexAttributeKind::I32,
},
// specific clip attributes
VertexAttribute {
name: "aClipLocalPos",
count: 2,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aClipLocalRect",
count: 4,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aClipMode",
count: 1,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aClipRect_TL",
count: 4,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aClipRadii_TL",
count: 4,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aClipRect_TR",
count: 4,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aClipRadii_TR",
count: 4,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aClipRect_BL",
count: 4,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aClipRadii_BL",
count: 4,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aClipRect_BR",
count: 4,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aClipRadii_BR",
count: 4,
kind: VertexAttributeKind::F32,
},
],
};
pub const CLIP_BOX_SHADOW: VertexDescriptor = VertexDescriptor {
vertex_attributes: &[VertexAttribute {
name: "aPosition",
count: 2,
kind: VertexAttributeKind::U8Norm,
}],
instance_attributes: &[
// common clip attributes
VertexAttribute {
name: "aClipDeviceArea",
count: 4,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aClipOrigins",
count: 4,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aDevicePixelScale",
count: 1,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aTransformIds",
count: 2,
kind: VertexAttributeKind::I32,
},
// specific clip attributes
VertexAttribute {
name: "aClipDataResourceAddress",
count: 2,
kind: VertexAttributeKind::U16,
},
VertexAttribute {
name: "aClipSrcRectSize",
count: 2,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aClipMode",
count: 1,
kind: VertexAttributeKind::I32,
},
VertexAttribute {
name: "aStretchMode",
count: 2,
kind: VertexAttributeKind::I32,
},
VertexAttribute {
name: "aClipDestRect",
count: 4,
kind: VertexAttributeKind::F32,
},
],
};
pub const GPU_CACHE_UPDATE: VertexDescriptor = VertexDescriptor {
vertex_attributes: &[
VertexAttribute {
name: "aPosition",
count: 2,
kind: VertexAttributeKind::U16Norm,
},
VertexAttribute {
name: "aValue",
count: 4,
kind: VertexAttributeKind::F32,
},
],
instance_attributes: &[],
};
pub const RESOLVE: VertexDescriptor = VertexDescriptor {
vertex_attributes: &[VertexAttribute {
name: "aPosition",
count: 2,
kind: VertexAttributeKind::U8Norm,
}],
instance_attributes: &[VertexAttribute {
name: "aRect",
count: 4,
kind: VertexAttributeKind::F32,
}],
};
pub const SVG_FILTER: VertexDescriptor = VertexDescriptor {
vertex_attributes: &[VertexAttribute {
name: "aPosition",
count: 2,
kind: VertexAttributeKind::U8Norm,
}],
instance_attributes: &[
VertexAttribute {
name: "aFilterRenderTaskAddress",
count: 1,
kind: VertexAttributeKind::I32,
},
VertexAttribute {
name: "aFilterInput1TaskAddress",
count: 1,
kind: VertexAttributeKind::I32,
},
VertexAttribute {
name: "aFilterInput2TaskAddress",
count: 1,
kind: VertexAttributeKind::I32,
},
VertexAttribute {
name: "aFilterKind",
count: 1,
kind: VertexAttributeKind::U16,
},
VertexAttribute {
name: "aFilterInputCount",
count: 1,
kind: VertexAttributeKind::U16,
},
VertexAttribute {
name: "aFilterGenericInt",
count: 1,
kind: VertexAttributeKind::U16,
},
VertexAttribute {
name: "aUnused",
count: 1,
kind: VertexAttributeKind::U16,
},
VertexAttribute {
name: "aFilterExtraDataAddress",
count: 2,
kind: VertexAttributeKind::U16,
},
],
};
pub const MASK: VertexDescriptor = VertexDescriptor {
vertex_attributes: &[VertexAttribute {
name: "aPosition",
count: 2,
kind: VertexAttributeKind::U8Norm,
}],
instance_attributes: &[
VertexAttribute {
name: "aData",
count: 4,
kind: VertexAttributeKind::I32,
},
VertexAttribute {
name: "aClipData",
count: 4,
kind: VertexAttributeKind::I32,
},
],
};
pub const VECTOR_STENCIL: VertexDescriptor = VertexDescriptor {
vertex_attributes: &[VertexAttribute {
name: "aPosition",
count: 2,
kind: VertexAttributeKind::U8Norm,
}],
instance_attributes: &[
VertexAttribute {
name: "aFromPosition",
count: 2,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aCtrlPosition",
count: 2,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aToPosition",
count: 2,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aFromNormal",
count: 2,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aCtrlNormal",
count: 2,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aToNormal",
count: 2,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aPathID",
count: 1,
kind: VertexAttributeKind::U16,
},
VertexAttribute {
name: "aPad",
count: 1,
kind: VertexAttributeKind::U16,
},
],
};
pub const VECTOR_COVER: VertexDescriptor = VertexDescriptor {
vertex_attributes: &[VertexAttribute {
name: "aPosition",
count: 2,
kind: VertexAttributeKind::U8Norm,
}],
instance_attributes: &[
VertexAttribute {
name: "aTargetRect",
count: 4,
kind: VertexAttributeKind::I32,
},
VertexAttribute {
name: "aStencilOrigin",
count: 2,
kind: VertexAttributeKind::I32,
},
VertexAttribute {
name: "aSubpixel",
count: 1,
kind: VertexAttributeKind::U16,
},
VertexAttribute {
name: "aPad",
count: 1,
kind: VertexAttributeKind::U16,
},
],
};
pub const COMPOSITE: VertexDescriptor = VertexDescriptor {
vertex_attributes: &[VertexAttribute {
name: "aPosition",
count: 2,
kind: VertexAttributeKind::U8Norm,
}],
instance_attributes: &[
VertexAttribute {
name: "aLocalRect",
count: 4,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aDeviceClipRect",
count: 4,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aColor",
count: 4,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aParams",
count: 4,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aUvRect0",
count: 4,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aUvRect1",
count: 4,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aUvRect2",
count: 4,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aTransform",
count: 4,
kind: VertexAttributeKind::F32,
},
],
};
pub const CLEAR: VertexDescriptor = VertexDescriptor {
vertex_attributes: &[VertexAttribute {
name: "aPosition",
count: 2,
kind: VertexAttributeKind::U8Norm,
}],
instance_attributes: &[
VertexAttribute {
name: "aRect",
count: 4,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "aColor",
count: 4,
kind: VertexAttributeKind::F32,
},
],
};
pub const COPY: VertexDescriptor = VertexDescriptor {
vertex_attributes: &[VertexAttribute {
name: "aPosition",
count: 2,
kind: VertexAttributeKind::U8Norm,
}],
instance_attributes: &[
VertexAttribute {
name: "a_src_rect",
count: 4,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "a_dst_rect",
count: 4,
kind: VertexAttributeKind::F32,
},
VertexAttribute {
name: "a_dst_texture_size",
count: 2,
kind: VertexAttributeKind::F32,
},
],
};
}
#[derive(Debug, Copy, Clone, PartialEq)]
pub enum VertexArrayKind {
Primitive,
Blur,
ClipRect,
ClipBoxShadow,
VectorStencil,
VectorCover,
Border,
Scale,
LineDecoration,
FastLinearGradient,
LinearGradient,
RadialGradient,
ConicGradient,
Resolve,
SvgFilter,
Composite,
Clear,
Copy,
Mask,
}
pub struct VertexDataTexture<T> {
texture: Option<Texture>,
format: api::ImageFormat,
_marker: PhantomData<T>,
}
impl<T> VertexDataTexture<T> {
pub fn new(format: api::ImageFormat) -> Self {
Self {
texture: None,
format,
_marker: PhantomData,
}
}
/// Returns a borrow of the GPU texture. Panics if it hasn't been initialized.
pub fn texture(&self) -> &Texture {
self.texture.as_ref().unwrap()
}
/// Returns an estimate of the GPU memory consumed by this VertexDataTexture.
pub fn size_in_bytes(&self) -> usize {
self.texture.as_ref().map_or(0, |t| t.size_in_bytes())
}
pub fn update<'a>(
&'a mut self,
device: &mut Device,
texture_uploader: &mut TextureUploader<'a>,
data: &mut Vec<T>,
) {
debug_assert!(mem::size_of::<T>() % 16 == 0);
let texels_per_item = mem::size_of::<T>() / 16;
let items_per_row = MAX_VERTEX_TEXTURE_WIDTH / texels_per_item;
debug_assert_ne!(items_per_row, 0);
// Ensure we always end up with a texture when leaving this method.
let mut len = data.len();
if len == 0 {
if self.texture.is_some() {
return;
}
data.reserve(items_per_row);
len = items_per_row;
} else {
// Extend the data array to have enough capacity to upload at least
// a multiple of the row size. This ensures memory safety when the
// array is passed to OpenGL to upload to the GPU.
let extra = len % items_per_row;
if extra != 0 {
let padding = items_per_row - extra;
data.reserve(padding);
len += padding;
}
}
let needed_height = (len / items_per_row) as i32;
let existing_height = self
.texture
.as_ref()
.map_or(0, |t| t.get_dimensions().height);
// Create a new texture if needed.
//
// These textures are generally very small, which is why we don't bother
// with incremental updates and just re-upload every frame. For most pages
// they're one row each, and on stress tests like css-francine they end up
// in the 6-14 range. So we size the texture tightly to what we need (usually
// 1), and shrink it if the waste would be more than `VERTEX_TEXTURE_EXTRA_ROWS`
// rows. This helps with memory overhead, especially because there are several
// instances of these textures per Renderer.
if needed_height > existing_height
|| needed_height + VERTEX_TEXTURE_EXTRA_ROWS < existing_height
{
// Drop the existing texture, if any.
if let Some(t) = self.texture.take() {
device.delete_texture(t);
}
let texture = device.create_texture(
api::ImageBufferKind::Texture2D,
self.format,
MAX_VERTEX_TEXTURE_WIDTH as i32,
// Ensure height is at least two to work around
needed_height.max(2),
TextureFilter::Nearest,
None,
);
self.texture = Some(texture);
}
// Note: the actual width can be larger than the logical one, with a few texels
// of each row unused at the tail. This is needed because there is still hardware
// (like Intel iGPUs) that prefers power-of-two sizes of textures ([1]).
//
let logical_width = if needed_height == 1 {
data.len() * texels_per_item
} else {
MAX_VERTEX_TEXTURE_WIDTH - (MAX_VERTEX_TEXTURE_WIDTH % texels_per_item)
};
let rect = DeviceIntRect::from_size(
DeviceIntSize::new(logical_width as i32, needed_height),
);
debug_assert!(len <= data.capacity(), "CPU copy will read out of bounds");
texture_uploader.upload(
device,
self.texture(),
rect,
None,
None,
data.as_ptr(),
len,
);
}
pub fn deinit(mut self, device: &mut Device) {
if let Some(t) = self.texture.take() {
device.delete_texture(t);
}
}
}
pub struct VertexDataTextures {
prim_header_f_texture: VertexDataTexture<PrimitiveHeaderF>,
prim_header_i_texture: VertexDataTexture<PrimitiveHeaderI>,
transforms_texture: VertexDataTexture<TransformData>,
render_task_texture: VertexDataTexture<RenderTaskData>,
}
impl VertexDataTextures {
pub fn new() -> Self {
VertexDataTextures {
prim_header_f_texture: VertexDataTexture::new(api::ImageFormat::RGBAF32),
prim_header_i_texture: VertexDataTexture::new(api::ImageFormat::RGBAI32),
transforms_texture: VertexDataTexture::new(api::ImageFormat::RGBAF32),
render_task_texture: VertexDataTexture::new(api::ImageFormat::RGBAF32),
}
}
pub fn update(&mut self, device: &mut Device, pbo_pool: &mut UploadPBOPool, frame: &mut Frame) {
let mut texture_uploader = device.upload_texture(pbo_pool);
self.prim_header_f_texture.update(
device,
&mut texture_uploader,
&mut frame.prim_headers.headers_float,
);
self.prim_header_i_texture.update(
device,
&mut texture_uploader,
&mut frame.prim_headers.headers_int,
);
self.transforms_texture
.update(device, &mut texture_uploader, &mut frame.transform_palette);
self.render_task_texture.update(
device,
&mut texture_uploader,
&mut frame.render_tasks.task_data,
);
// Flush and drop the texture uploader now, so that
// we can borrow the textures to bind them.
texture_uploader.flush(device);
device.bind_texture(
super::TextureSampler::PrimitiveHeadersF,
&self.prim_header_f_texture.texture(),
Swizzle::default(),
);
device.bind_texture(
super::TextureSampler::PrimitiveHeadersI,
&self.prim_header_i_texture.texture(),
Swizzle::default(),
);
device.bind_texture(
super::TextureSampler::TransformPalette,
&self.transforms_texture.texture(),
Swizzle::default(),
);
device.bind_texture(
super::TextureSampler::RenderTasks,
&self.render_task_texture.texture(),
Swizzle::default(),
);
}
pub fn size_in_bytes(&self) -> usize {
self.prim_header_f_texture.size_in_bytes()
+ self.prim_header_i_texture.size_in_bytes()
+ self.transforms_texture.size_in_bytes()
+ self.render_task_texture.size_in_bytes()
}
pub fn deinit(self, device: &mut Device) {
self.transforms_texture.deinit(device);
self.prim_header_f_texture.deinit(device);
self.prim_header_i_texture.deinit(device);
self.render_task_texture.deinit(device);
}
}
pub struct RendererVAOs {
prim_vao: VAO,
blur_vao: VAO,
clip_rect_vao: VAO,
clip_box_shadow_vao: VAO,
border_vao: VAO,
line_vao: VAO,
scale_vao: VAO,
fast_linear_gradient_vao: VAO,
linear_gradient_vao: VAO,
radial_gradient_vao: VAO,
conic_gradient_vao: VAO,
resolve_vao: VAO,
svg_filter_vao: VAO,
composite_vao: VAO,
clear_vao: VAO,
copy_vao: VAO,
mask_vao: VAO,
}
impl RendererVAOs {
pub fn new(device: &mut Device, indexed_quads: Option<NonZeroUsize>) -> Self {
const QUAD_INDICES: [u16; 6] = [0, 1, 2, 2, 1, 3];
const QUAD_VERTICES: [[u8; 2]; 4] = [[0, 0], [0xFF, 0], [0, 0xFF], [0xFF, 0xFF]];
let instance_divisor = if indexed_quads.is_some() { 0 } else { 1 };
let prim_vao = device.create_vao(&desc::PRIM_INSTANCES, instance_divisor);
device.bind_vao(&prim_vao);
match indexed_quads {
Some(count) => {
assert!(count.get() < u16::MAX as usize);
let quad_indices = (0 .. count.get() as u16)
.flat_map(|instance| QUAD_INDICES.iter().map(move |&index| instance * 4 + index))
.collect::<Vec<_>>();
device.update_vao_indices(&prim_vao, &quad_indices, VertexUsageHint::Static);
let quad_vertices = (0 .. count.get() as u16)
.flat_map(|_| QUAD_VERTICES.iter().cloned())
.collect::<Vec<_>>();
device.update_vao_main_vertices(&prim_vao, &quad_vertices, VertexUsageHint::Static);
}
None => {
device.update_vao_indices(&prim_vao, &QUAD_INDICES, VertexUsageHint::Static);
device.update_vao_main_vertices(&prim_vao, &QUAD_VERTICES, VertexUsageHint::Static);
}
}
RendererVAOs {
blur_vao: device.create_vao_with_new_instances(&desc::BLUR, &prim_vao),
clip_rect_vao: device.create_vao_with_new_instances(&desc::CLIP_RECT, &prim_vao),
clip_box_shadow_vao: device
.create_vao_with_new_instances(&desc::CLIP_BOX_SHADOW, &prim_vao),
border_vao: device.create_vao_with_new_instances(&desc::BORDER, &prim_vao),
scale_vao: device.create_vao_with_new_instances(&desc::SCALE, &prim_vao),
line_vao: device.create_vao_with_new_instances(&desc::LINE, &prim_vao),
fast_linear_gradient_vao: device.create_vao_with_new_instances(&desc::FAST_LINEAR_GRADIENT, &prim_vao),
linear_gradient_vao: device.create_vao_with_new_instances(&desc::LINEAR_GRADIENT, &prim_vao),
radial_gradient_vao: device.create_vao_with_new_instances(&desc::RADIAL_GRADIENT, &prim_vao),
conic_gradient_vao: device.create_vao_with_new_instances(&desc::CONIC_GRADIENT, &prim_vao),
resolve_vao: device.create_vao_with_new_instances(&desc::RESOLVE, &prim_vao),
svg_filter_vao: device.create_vao_with_new_instances(&desc::SVG_FILTER, &prim_vao),
composite_vao: device.create_vao_with_new_instances(&desc::COMPOSITE, &prim_vao),
clear_vao: device.create_vao_with_new_instances(&desc::CLEAR, &prim_vao),
copy_vao: device.create_vao_with_new_instances(&desc::COPY, &prim_vao),
mask_vao: device.create_vao_with_new_instances(&desc::MASK, &prim_vao),
prim_vao,
}
}
pub fn deinit(self, device: &mut Device) {
device.delete_vao(self.prim_vao);
device.delete_vao(self.resolve_vao);
device.delete_vao(self.clip_rect_vao);
device.delete_vao(self.clip_box_shadow_vao);
device.delete_vao(self.fast_linear_gradient_vao);
device.delete_vao(self.linear_gradient_vao);
device.delete_vao(self.radial_gradient_vao);
device.delete_vao(self.conic_gradient_vao);
device.delete_vao(self.blur_vao);
device.delete_vao(self.line_vao);
device.delete_vao(self.border_vao);
device.delete_vao(self.scale_vao);
device.delete_vao(self.svg_filter_vao);
device.delete_vao(self.composite_vao);
device.delete_vao(self.clear_vao);
device.delete_vao(self.copy_vao);
device.delete_vao(self.mask_vao);
}
}
impl ops::Index<VertexArrayKind> for RendererVAOs {
type Output = VAO;
fn index(&self, kind: VertexArrayKind) -> &VAO {
match kind {
VertexArrayKind::Primitive => &self.prim_vao,
VertexArrayKind::ClipRect => &self.clip_rect_vao,
VertexArrayKind::ClipBoxShadow => &self.clip_box_shadow_vao,
VertexArrayKind::Blur => &self.blur_vao,
VertexArrayKind::VectorStencil | VertexArrayKind::VectorCover => unreachable!(),
VertexArrayKind::Border => &self.border_vao,
VertexArrayKind::Scale => &self.scale_vao,
VertexArrayKind::LineDecoration => &self.line_vao,
VertexArrayKind::FastLinearGradient => &self.fast_linear_gradient_vao,
VertexArrayKind::LinearGradient => &self.linear_gradient_vao,
VertexArrayKind::RadialGradient => &self.radial_gradient_vao,
VertexArrayKind::ConicGradient => &self.conic_gradient_vao,
VertexArrayKind::Resolve => &self.resolve_vao,
VertexArrayKind::SvgFilter => &self.svg_filter_vao,
VertexArrayKind::Composite => &self.composite_vao,
VertexArrayKind::Clear => &self.clear_vao,
VertexArrayKind::Copy => &self.copy_vao,
VertexArrayKind::Mask => &self.mask_vao,
}
}
}