From 5336fb9255e23714da081cabfda822390f6588cf Mon Sep 17 00:00:00 2001
From: Capucho <jcapucho7@gmail.com>
Date: Fri, 28 Aug 2020 12:54:15 +0100
Subject: [PATCH] Began porting pipeline creation

---
 voxygen/Cargo.toml             |  4 +-
 voxygen/src/render/error.rs    |  7 +++
 voxygen/src/render/renderer.rs | 78 ++++++++++++++++------------------
 3 files changed, 46 insertions(+), 43 deletions(-)

diff --git a/voxygen/Cargo.toml b/voxygen/Cargo.toml
index 8116599112..a2b43c3a0a 100644
--- a/voxygen/Cargo.toml
+++ b/voxygen/Cargo.toml
@@ -46,7 +46,8 @@ i18n = {package = "veloren-i18n", path = "i18n"}
 # Graphics
 winit = {version = "0.24.0", features = ["serde"]}
 wgpu = {git="https://github.com/gfx-rs/wgpu-rs.git"}
-zerocopy = "0.3.0"
+zerocopy = "0.3"
+shaderc = "0.6.2"
 
 # Ui
 conrod_core = {git = "https://gitlab.com/veloren/conrod.git", branch="copypasta_0.7"}
@@ -83,7 +84,6 @@ directories-next = "2.0"
 dot_vox = "4.0"
 enum-iterator = "0.6"
 futures = "0.3"
-glsl-include = "0.3.1"
 guillotiere = "0.6"
 hashbrown = {version = "0.9", features = ["rayon", "serde", "nightly"]}
 image = {version = "0.23.12", default-features = false, features = ["ico", "png"]}
diff --git a/voxygen/src/render/error.rs b/voxygen/src/render/error.rs
index ba41795750..c003634999 100644
--- a/voxygen/src/render/error.rs
+++ b/voxygen/src/render/error.rs
@@ -7,6 +7,8 @@ pub enum RenderError {
     SwapChainError(wgpu::SwapChainError),
     CustomError(String),
     CouldNotFindAdapter,
+    ErrorInitializingCompiler,
+    ShaderError(shaderc::Error)
 }
 
 impl From<wgpu::RequestDeviceError> for RenderError {
@@ -16,6 +18,11 @@ impl From<wgpu::RequestDeviceError> for RenderError {
 impl From<wgpu::BufferAsyncError> for RenderError {
     fn from(err: wgpu::BufferAsyncError) -> Self { Self::MappingError(err) }
 }
+
 impl From<wgpu::SwapChainError> for RenderError {
     fn from(err: wgpu::SwapChainError) -> Self { Self::SwapChainError(err) }
 }
+
+impl From<shaderc::Error> for RenderError {
+    fn from(err: shaderc::Error) -> Self { Self::ShaderError(err) }
+}
diff --git a/voxygen/src/render/renderer.rs b/voxygen/src/render/renderer.rs
index 2fe68273ba..4a6fed8373 100644
--- a/voxygen/src/render/renderer.rs
+++ b/voxygen/src/render/renderer.rs
@@ -1876,7 +1876,7 @@ impl Renderer {
 /// Creates all the pipelines used to render.
 #[allow(clippy::type_complexity)] // TODO: Pending review in #587
 fn create_pipelines(
-    factory: &mut gfx_backend::Factory,
+    factory: &wgpu::Device,
     shaders: &Shaders,
     mode: &RenderMode,
     has_shadow_views: bool,
@@ -1951,17 +1951,37 @@ fn create_pipelines(
         _ => shaders.cloud_regular,
     };
 
-    let mut include_ctx = IncludeContext::new();
-    include_ctx.include("constants.glsl", &constants);
-    include_ctx.include("globals.glsl", &shaders.globals.read().0);
-    include_ctx.include("shadows.glsl", &shaders.shadows.read().0);
-    include_ctx.include("sky.glsl", &shaders.sky.read().0);
-    include_ctx.include("light.glsl", &shaders.light.read().0);
-    include_ctx.include("srgb.glsl", &shaders.srgb.read().0);
-    include_ctx.include("random.glsl", &shaders.random.read().0);
-    include_ctx.include("lod.glsl", &shaders.lod.read().0);
-    include_ctx.include("anti-aliasing.glsl", &anti_alias.read().0);
-    include_ctx.include("cloud.glsl", &cloud.read().0);
+    let mut compiler = shaderc::Compiler::new().ok_or(RenderError::ErrorInitializingCompiler)?;
+    let mut options = shaderc::CompileOptions::new().ok_or(RenderError::ErrorInitializingCompiler)?;
+    options.set_optimization_level(shaderc::OptimizationLevel::Performance);
+    options.set_include_callback(move |name,_,shader_name,_| {
+        Ok(shaderc::ResolvedInclude {
+            resolved_name: name,
+            content: match name {
+                "constants.glsl" => constants,
+                "globals.glsl" => globals,
+                "shadows.glsl" => shadows,
+                "sky.glsl" => sky,
+                "light.glsl" => light,
+                "srgb.glsl" => srgb,
+                "random.glsl" => &random,
+                "lod.glsl" => &lod,
+                "anti-aliasing.glsl" => &anti_alias,
+                "cloud.glsl" => &cloud,
+                other => return Err(format!("Include {} is not defined",other))
+            }
+        } )
+    });
+
+    let figure_vert = &shaders.figure_vert.read().0;
+
+    let terrain_point_shadow_vert = &shaders.terrain_point_shadow_vert.read().0;
+
+    let terrain_directed_shadow_vert = &shaders.terrain_directed_shadow_vert.read().0;
+
+    let figure_directed_shadow_vert = &shadows.figure_directed_shadow_vert.read().0;
+
+    let directed_shadow_frag = &shaders.directed_shadow_frag.read().0;
 
     // Construct a pipeline for rendering skyboxes
     let skybox_pipeline = create_pipeline(
@@ -2165,35 +2185,11 @@ fn create_pipelines(
 }
 
 /// Create a new pipeline from the provided vertex shader and fragment shader.
-fn create_pipeline<P: gfx::pso::PipelineInit>(
-    factory: &mut gfx_backend::Factory,
-    pipe: P,
-    vs: &str,
-    fs: &str,
-    ctx: &IncludeContext,
-    cull_face: gfx::state::CullFace,
-) -> Result<GfxPipeline<P>, RenderError> {
-    let vs = ctx.expand(vs)?;
-    let fs = ctx.expand(fs)?;
-
-    let program = factory.link_program(vs.as_bytes(), fs.as_bytes())?;
-
-    let result = Ok(GfxPipeline {
-        pso: factory.create_pipeline_from_program(
-            &program,
-            gfx::Primitive::TriangleList,
-            gfx::state::Rasterizer {
-                front_face: gfx::state::FrontFace::CounterClockwise,
-                cull_face,
-                method: gfx::state::RasterMethod::Fill,
-                offset: None,
-                samples: Some(gfx::state::MultiSample),
-            },
-            pipe,
-        )?,
-    });
-
-    result
+fn create_pipeline(
+    device: &wgpu::Device,
+    desc: &wgpu::RenderPipelineDescriptor
+) -> wgpu::RenderPipeline {
+    device.create_render_pipeline(desc)
 }
 
 /// Create a new shadow map pipeline.