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Implement GPURenderPipeline

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Add webidl for GPURenderPipeline and implement GPUDevice.createRenderPipeline()
This commit is contained in:
Kunal Mohan 2020-05-29 11:15:31 +05:30
parent f014f15d4e
commit 130de8b8e6
15 changed files with 659 additions and 22 deletions
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93
components/webgpu/lib.rs
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@ -10,6 +10,7 @@ pub extern crate wgpu_types as wgt;
pub mod identity;
use arrayvec::ArrayVec;
use identity::{IdentityRecyclerFactory, WebGPUMsg};
use ipc_channel::ipc::{self, IpcReceiver, IpcSender};
use malloc_size_of::{MallocSizeOf, MallocSizeOfOps};
@ -96,6 +97,26 @@ pub enum WebGPURequest {
pipeline_layout_id: id::PipelineLayoutId,
bind_group_layouts: Vec<id::BindGroupLayoutId>,
},
CreateRenderPipeline {
device_id: id::DeviceId,
render_pipeline_id: id::RenderPipelineId,
pipeline_layout_id: id::PipelineLayoutId,
vertex_module: id::ShaderModuleId,
vertex_entry_point: String,
fragment_module: Option<id::ShaderModuleId>,
fragment_entry_point: Option<String>,
primitive_topology: wgt::PrimitiveTopology,
rasterization_state: wgt::RasterizationStateDescriptor,
color_states: ArrayVec<[wgt::ColorStateDescriptor; wgpu::device::MAX_COLOR_TARGETS]>,
depth_stencil_state: Option<wgt::DepthStencilStateDescriptor>,
vertex_state: (
wgt::IndexFormat,
Vec<(u64, wgt::InputStepMode, Vec<wgt::VertexAttributeDescriptor>)>,
),
sample_count: u32,
sample_mask: u32,
alpha_to_coverage_enabled: bool,
},
CreateSampler {
device_id: id::DeviceId,
sampler_id: id::SamplerId,
@ -340,6 +361,77 @@ impl WGPU {
let _ = gfx_select!(pipeline_layout_id =>
global.device_create_pipeline_layout(device_id, &descriptor, pipeline_layout_id));
},
//TODO: consider https://github.com/gfx-rs/wgpu/issues/684
WebGPURequest::CreateRenderPipeline {
device_id,
render_pipeline_id,
pipeline_layout_id,
vertex_module,
vertex_entry_point,
fragment_module,
fragment_entry_point,
primitive_topology,
rasterization_state,
color_states,
depth_stencil_state,
vertex_state,
sample_count,
sample_mask,
alpha_to_coverage_enabled,
} => {
let global = &self.global;
let vertex_ep = std::ffi::CString::new(vertex_entry_point).unwrap();
let frag_stage = match fragment_module {
Some(frag) => {
let frag_ep =
std::ffi::CString::new(fragment_entry_point.unwrap()).unwrap();
let frag_module = wgpu_core::pipeline::ProgrammableStageDescriptor {
module: frag,
entry_point: frag_ep.as_ptr(),
};
Some(frag_module)
},
None => None,
};
let descriptor = wgpu_core::pipeline::RenderPipelineDescriptor {
layout: pipeline_layout_id,
vertex_stage: wgpu_core::pipeline::ProgrammableStageDescriptor {
module: vertex_module,
entry_point: vertex_ep.as_ptr(),
},
fragment_stage: frag_stage
.as_ref()
.map_or(ptr::null(), |fs| fs as *const _),
primitive_topology,
rasterization_state: &rasterization_state as *const _,
color_states: color_states.as_ptr(),
color_states_length: color_states.len(),
depth_stencil_state: depth_stencil_state
.as_ref()
.map_or(ptr::null(), |dss| dss as *const _),
vertex_state: wgpu_core::pipeline::VertexStateDescriptor {
index_format: vertex_state.0,
vertex_buffers_length: vertex_state.1.len(),
vertex_buffers: vertex_state
.1
.iter()
.map(|buffer| wgpu_core::pipeline::VertexBufferLayoutDescriptor {
array_stride: buffer.0,
step_mode: buffer.1,
attributes_length: buffer.2.len(),
attributes: buffer.2.as_ptr(),
})
.collect::<Vec<_>>()
.as_ptr(),
},
sample_count,
sample_mask,
alpha_to_coverage_enabled,
};
let _ = gfx_select!(render_pipeline_id =>
global.device_create_render_pipeline(device_id, &descriptor, render_pipeline_id));
},
WebGPURequest::CreateSampler {
device_id,
sampler_id,
@ -510,5 +602,6 @@ webgpu_resource!(WebGPUComputePipeline, id::ComputePipelineId);
webgpu_resource!(WebGPUDevice, id::DeviceId);
webgpu_resource!(WebGPUPipelineLayout, id::PipelineLayoutId);
webgpu_resource!(WebGPUQueue, id::QueueId);
webgpu_resource!(WebGPURenderPipeline, id::RenderPipelineId);
webgpu_resource!(WebGPUSampler, id::SamplerId);
webgpu_resource!(WebGPUShaderModule, id::ShaderModuleId);