From 7f3036449bf86212e92abebd8b046e39f736018c Mon Sep 17 00:00:00 2001
From: Dzmitry Malyshau <dmalyshau@mozilla.com>
Date: Wed, 26 Feb 2020 13:49:56 +0000
Subject: [PATCH] Bug 1614702 - WebGPU textures, texture views, and samplers
 r=jgilbert,webidl,smaug

this change adds an ability to create WebGPU textures, views, and samplers

Differential Revision: https://phabricator.services.mozilla.com/D63595

[ghsync] From https://hg.mozilla.org/mozilla-central/rev/7d59549f2fda3aed3927ab49b940d9024e161798
---
 wgpu-remote/cbindgen.toml |  1 +
 wgpu-remote/src/lib.rs    | 76 +++++++++++++++++++++++++++++++++++++++
 wgpu-remote/src/server.rs | 54 ++++++++++++++++++++++++++++
 3 files changed, 131 insertions(+)

diff --git a/wgpu-remote/cbindgen.toml b/wgpu-remote/cbindgen.toml
index 9a514af18f..12a84cef42 100644
--- a/wgpu-remote/cbindgen.toml
+++ b/wgpu-remote/cbindgen.toml
@@ -40,6 +40,7 @@ derive_eq = true
 [enum]
 prefix_with_name = true
 derive_helper_methods = true
+add_sentinel = true
 
 [macro_expansion]
 bitflags = true
diff --git a/wgpu-remote/src/lib.rs b/wgpu-remote/src/lib.rs
index d48f1327ef..c0b53585c3 100644
--- a/wgpu-remote/src/lib.rs
+++ b/wgpu-remote/src/lib.rs
@@ -32,6 +32,9 @@ struct IdentityHub {
     shader_modules: IdentityManager,
     compute_pipelines: IdentityManager,
     render_pipelines: IdentityManager,
+    textures: IdentityManager,
+    texture_views: IdentityManager,
+    samplers: IdentityManager,
 }
 
 #[derive(Debug, Default)]
@@ -179,6 +182,79 @@ pub extern "C" fn wgpu_client_kill_buffer_id(client: &Client, id: id::BufferId)
         .free(id)
 }
 
+#[no_mangle]
+pub extern "C" fn wgpu_client_make_texture_id(client: &Client, device_id: id::DeviceId) -> id::TextureId {
+    let backend = device_id.backend();
+    client
+        .identities
+        .lock()
+        .select(backend)
+        .textures
+        .alloc(backend)
+}
+
+#[no_mangle]
+pub extern "C" fn wgpu_client_kill_texture_id(
+    client: &Client,
+    id: id::TextureId,
+) {
+    client
+        .identities
+        .lock()
+        .select(id.backend())
+        .textures
+        .free(id)
+}
+
+
+#[no_mangle]
+pub extern "C" fn wgpu_client_make_texture_view_id(client: &Client, device_id: id::DeviceId) -> id::TextureViewId {
+    let backend = device_id.backend();
+    client
+        .identities
+        .lock()
+        .select(backend)
+        .texture_views
+        .alloc(backend)
+}
+
+#[no_mangle]
+pub extern "C" fn wgpu_client_kill_texture_view_id(
+    client: &Client,
+    id: id::TextureViewId,
+) {
+    client
+        .identities
+        .lock()
+        .select(id.backend())
+        .texture_views
+        .free(id)
+}
+
+#[no_mangle]
+pub extern "C" fn wgpu_client_make_sampler_id(client: &Client, device_id: id::DeviceId) -> id::SamplerId {
+    let backend = device_id.backend();
+    client
+        .identities
+        .lock()
+        .select(backend)
+        .samplers
+        .alloc(backend)
+}
+
+#[no_mangle]
+pub extern "C" fn wgpu_client_kill_sampler_id(
+    client: &Client,
+    id: id::SamplerId,
+) {
+    client
+        .identities
+        .lock()
+        .select(id.backend())
+        .samplers
+        .free(id)
+}
+
 #[no_mangle]
 pub extern "C" fn wgpu_client_make_encoder_id(
     client: &Client,
diff --git a/wgpu-remote/src/server.rs b/wgpu-remote/src/server.rs
index d69c03e7c1..95f4aef1d2 100644
--- a/wgpu-remote/src/server.rs
+++ b/wgpu-remote/src/server.rs
@@ -334,3 +334,57 @@ pub extern "C" fn wgpu_server_render_pipeline_destroy(
 ) {
     gfx_select!(self_id => global.render_pipeline_destroy(self_id));
 }
+
+#[no_mangle]
+pub extern "C" fn wgpu_server_device_create_texture(
+    global: &Global,
+    self_id: id::DeviceId,
+    desc: &core::resource::TextureDescriptor,
+    new_id: id::TextureId,
+) {
+    gfx_select!(self_id => global.device_create_texture(self_id, desc, new_id));
+}
+
+#[no_mangle]
+pub extern "C" fn wgpu_server_texture_create_view(
+    global: &Global,
+    self_id: id::TextureId,
+    desc: Option<&core::resource::TextureViewDescriptor>,
+    new_id: id::TextureViewId,
+) {
+    gfx_select!(self_id => global.texture_create_view(self_id, desc, new_id));
+}
+
+#[no_mangle]
+pub extern "C" fn wgpu_server_texture_destroy(
+    global: &Global,
+    self_id: id::TextureId,
+) {
+    gfx_select!(self_id => global.texture_destroy(self_id));
+}
+
+#[no_mangle]
+pub extern "C" fn wgpu_server_texture_view_destroy(
+    global: &Global,
+    self_id: id::TextureViewId,
+) {
+    gfx_select!(self_id => global.texture_view_destroy(self_id));
+}
+
+#[no_mangle]
+pub extern "C" fn wgpu_server_device_create_sampler(
+    global: &Global,
+    self_id: id::DeviceId,
+    desc: &core::resource::SamplerDescriptor,
+    new_id: id::SamplerId,
+) {
+    gfx_select!(self_id => global.device_create_sampler(self_id, desc, new_id));
+}
+
+#[no_mangle]
+pub extern "C" fn wgpu_server_sampler_destroy(
+    global: &Global,
+    self_id: id::SamplerId,
+) {
+    gfx_select!(self_id => global.sampler_destroy(self_id));
+}