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|
use crate::bindings as br;
use crate::{compiler, spirv, ErrorCode};
use std::ffi::CString;
use std::marker::PhantomData;
use std::ptr;
pub use crate::bindings::root::ScHlslRootConstant as RootConstant;
/// A HLSL target.
#[derive(Debug, Clone)]
pub enum Target {}
impl spirv::Target for Target {
type Data = ();
}
/// A HLSL shader model version.
#[allow(non_snake_case, non_camel_case_types)]
#[derive(Copy, Clone, Debug, Hash, Eq, PartialEq)]
pub enum ShaderModel {
V3_0,
V4_0,
V4_0L9_0,
V4_0L9_1,
V4_0L9_3,
V4_1,
V5_0,
V5_1,
V6_0,
}
#[allow(non_snake_case, non_camel_case_types)]
impl ShaderModel {
fn as_raw(self) -> i32 {
use self::ShaderModel::*;
match self {
V3_0 => 30,
V4_0 => 40,
V4_0L9_0 => 40,
V4_0L9_1 => 40,
V4_0L9_3 => 40,
V4_1 => 41,
V5_0 => 50,
V5_1 => 51,
V6_0 => 60,
}
}
}
#[derive(Debug, Clone)]
pub struct CompilerVertexOptions {
pub invert_y: bool,
pub transform_clip_space: bool,
}
impl Default for CompilerVertexOptions {
fn default() -> CompilerVertexOptions {
CompilerVertexOptions {
invert_y: false,
transform_clip_space: false,
}
}
}
/// HLSL compiler options.
#[non_exhaustive]
#[derive(Debug, Clone)]
pub struct CompilerOptions {
pub shader_model: ShaderModel,
/// Support point size builtin but ignore the value.
pub point_size_compat: bool,
/// Support point coordinate builtin but ignore the value.
pub point_coord_compat: bool,
pub vertex: CompilerVertexOptions,
pub force_storage_buffer_as_uav: bool,
pub nonwritable_uav_texture_as_srv: bool,
/// Whether to force all uninitialized variables to be initialized to zero.
pub force_zero_initialized_variables: bool,
/// The name and execution model of the entry point to use. If no entry
/// point is specified, then the first entry point found will be used.
pub entry_point: Option<(String, spirv::ExecutionModel)>,
}
impl Default for CompilerOptions {
fn default() -> CompilerOptions {
CompilerOptions {
shader_model: ShaderModel::V3_0,
point_size_compat: false,
point_coord_compat: false,
vertex: CompilerVertexOptions::default(),
force_storage_buffer_as_uav: false,
nonwritable_uav_texture_as_srv: false,
force_zero_initialized_variables: false,
entry_point: None,
}
}
}
impl spirv::Parse<Target> for spirv::Ast<Target> {
fn parse(module: &spirv::Module) -> Result<Self, ErrorCode> {
let compiler = {
let mut compiler = ptr::null_mut();
unsafe {
check!(br::sc_internal_compiler_hlsl_new(
&mut compiler,
module.words.as_ptr() as *const u32,
module.words.len() as usize,
));
}
compiler::Compiler {
sc_compiler: compiler,
target_data: (),
has_been_compiled: false,
}
};
Ok(spirv::Ast {
compiler,
target_type: PhantomData,
})
}
}
impl spirv::Compile<Target> for spirv::Ast<Target> {
type CompilerOptions = CompilerOptions;
/// Set HLSL compiler specific compilation settings.
fn set_compiler_options(&mut self, options: &CompilerOptions) -> Result<(), ErrorCode> {
if let Some((name, model)) = &options.entry_point {
let name_raw = CString::new(name.as_str()).map_err(|_| ErrorCode::Unhandled)?;
let model = model.as_raw();
unsafe {
check!(br::sc_internal_compiler_set_entry_point(
self.compiler.sc_compiler,
name_raw.as_ptr(),
model,
));
}
};
let raw_options = br::ScHlslCompilerOptions {
shader_model: options.shader_model.as_raw(),
point_size_compat: options.point_size_compat,
point_coord_compat: options.point_coord_compat,
vertex_invert_y: options.vertex.invert_y,
vertex_transform_clip_space: options.vertex.transform_clip_space,
force_storage_buffer_as_uav: options.force_storage_buffer_as_uav,
nonwritable_uav_texture_as_srv: options.nonwritable_uav_texture_as_srv,
force_zero_initialized_variables: options.force_zero_initialized_variables,
};
unsafe {
check!(br::sc_internal_compiler_hlsl_set_options(
self.compiler.sc_compiler,
&raw_options,
));
}
Ok(())
}
/// Generate HLSL shader from the AST.
fn compile(&mut self) -> Result<String, ErrorCode> {
self.compiler.compile()
}
}
impl spirv::Ast<Target> {
///
pub fn set_root_constant_layout(&mut self, layout: Vec<RootConstant>) -> Result<(), ErrorCode> {
unsafe {
check!(br::sc_internal_compiler_hlsl_set_root_constant_layout(
self.compiler.sc_compiler,
layout.as_ptr(),
layout.len() as _,
));
}
Ok(())
}
}
|
