use std::cell::RefCell;
use std::collections::HashMap;
use std::hash::BuildHasherDefault;
use crate::RawUniformValue;
use smallvec::SmallVec;
use fnv::FnvHasher;
use crate::gl;
use crate::Handle;
use crate::context::CommandContext;
use crate::version::Version;
use crate::version::Api;
use crate::program::reflection::ShaderStage;
pub struct UniformsStorage {
values: RefCell<HashMap<gl::types::GLint, Option<RawUniformValue>,
BuildHasherDefault<FnvHasher>>>,
uniform_blocks: RefCell<SmallVec<[Option<gl::types::GLuint>; 4]>>,
shader_storage_blocks: RefCell<SmallVec<[Option<gl::types::GLuint>; 4]>>,
subroutine_uniforms: RefCell<HashMap<ShaderStage, Vec<gl::types::GLuint>,
BuildHasherDefault<FnvHasher>>>,
}
impl UniformsStorage {
#[inline]
pub fn new() -> UniformsStorage {
UniformsStorage {
values: RefCell::new(HashMap::with_hasher(Default::default())),
uniform_blocks: RefCell::new(SmallVec::new()),
shader_storage_blocks: RefCell::new(SmallVec::new()),
subroutine_uniforms: RefCell::new(HashMap::with_hasher(Default::default())),
}
}
pub fn set_uniform_value(&self, ctxt: &mut CommandContext<'_>, program: Handle,
location: gl::types::GLint, value: &RawUniformValue)
{
let mut values = self.values.borrow_mut();
assert!(ctxt.state.program == program);
macro_rules! uniform(
($ctxt:expr, $uniform:ident, $uniform_arb:ident, $($params:expr),+) => (
unsafe {
if $ctxt.version >= &Version(Api::Gl, 1, 5) ||
$ctxt.version >= &Version(Api::GlEs, 2, 0)
{
$ctxt.gl.$uniform($($params),+)
} else {
assert!($ctxt.extensions.gl_arb_shader_objects);
$ctxt.gl.$uniform_arb($($params),+)
}
}
)
);
macro_rules! uniform_f64(
($ctxt:expr, $uniform:ident, $($params:expr),+) => (
unsafe {
if $ctxt.extensions.gl_arb_gpu_shader_fp64 {
$ctxt.gl.$uniform($($params),+)
} else {
panic!("Double precision floats are not supported on this system.")
}
}
)
);
macro_rules! uniform_i64(
($ctxt:expr, $uniform:ident, $($params:expr),+) => (
unsafe {
if $ctxt.extensions.gl_arb_gpu_shader_int64 {
$ctxt.gl.$uniform($($params),+)
} else {
panic!("64 bit integers are not supported on this system.")
}
}
)
);
match (value, values.entry(location).or_insert(None)) {
(&RawUniformValue::SignedInt(a), &mut Some(RawUniformValue::SignedInt(b))) if a == b => (),
(&RawUniformValue::UnsignedInt(a), &mut Some(RawUniformValue::UnsignedInt(b))) if a == b => (),
(&RawUniformValue::Float(a), &mut Some(RawUniformValue::Float(b))) if a == b => (),
(&RawUniformValue::Mat2(a), &mut Some(RawUniformValue::Mat2(b))) if a == b => (),
(&RawUniformValue::Mat3(a), &mut Some(RawUniformValue::Mat3(b))) if a == b => (),
(&RawUniformValue::Mat4(a), &mut Some(RawUniformValue::Mat4(b))) if a == b => (),
(&RawUniformValue::Vec2(a), &mut Some(RawUniformValue::Vec2(b))) if a == b => (),
(&RawUniformValue::Vec3(a), &mut Some(RawUniformValue::Vec3(b))) if a == b => (),
(&RawUniformValue::Vec4(a), &mut Some(RawUniformValue::Vec4(b))) if a == b => (),
(&RawUniformValue::IntVec2(a), &mut Some(RawUniformValue::IntVec2(b))) if a == b => (),
(&RawUniformValue::IntVec3(a), &mut Some(RawUniformValue::IntVec3(b))) if a == b => (),
(&RawUniformValue::IntVec4(a), &mut Some(RawUniformValue::IntVec4(b))) if a == b => (),
(&RawUniformValue::UnsignedIntVec2(a), &mut Some(RawUniformValue::UnsignedIntVec2(b))) if a == b => (),
(&RawUniformValue::UnsignedIntVec3(a), &mut Some(RawUniformValue::UnsignedIntVec3(b))) if a == b => (),
(&RawUniformValue::UnsignedIntVec4(a), &mut Some(RawUniformValue::UnsignedIntVec4(b))) if a == b => (),
(&RawUniformValue::Double(a), &mut Some(RawUniformValue::Double(b))) if a == b => (),
(&RawUniformValue::DoubleMat2(a), &mut Some(RawUniformValue::DoubleMat2(b))) if a == b => (),
(&RawUniformValue::DoubleMat3(a), &mut Some(RawUniformValue::DoubleMat3(b))) if a == b => (),
(&RawUniformValue::DoubleMat4(a), &mut Some(RawUniformValue::DoubleMat4(b))) if a == b => (),
(&RawUniformValue::DoubleVec2(a), &mut Some(RawUniformValue::DoubleVec2(b))) if a == b => (),
(&RawUniformValue::DoubleVec3(a), &mut Some(RawUniformValue::DoubleVec3(b))) if a == b => (),
(&RawUniformValue::DoubleVec4(a), &mut Some(RawUniformValue::DoubleVec4(b))) if a == b => (),
(&RawUniformValue::Int64(a), &mut Some(RawUniformValue::Int64(b))) if a == b => (),
(&RawUniformValue::Int64Vec2(a), &mut Some(RawUniformValue::Int64Vec2(b))) if a == b => (),
(&RawUniformValue::Int64Vec3(a), &mut Some(RawUniformValue::Int64Vec3(b))) if a == b => (),
(&RawUniformValue::Int64Vec4(a), &mut Some(RawUniformValue::Int64Vec4(b))) if a == b => (),
(&RawUniformValue::UnsignedInt64(a), &mut Some(RawUniformValue::UnsignedInt64(b))) if a == b => (),
(&RawUniformValue::UnsignedInt64Vec2(a), &mut Some(RawUniformValue::UnsignedInt64Vec2(b))) if a == b => (),
(&RawUniformValue::UnsignedInt64Vec3(a), &mut Some(RawUniformValue::UnsignedInt64Vec3(b))) if a == b => (),
(&RawUniformValue::UnsignedInt64Vec4(a), &mut Some(RawUniformValue::UnsignedInt64Vec4(b))) if a == b => (),
(&RawUniformValue::SignedInt(v), target) => {
*target = Some(RawUniformValue::SignedInt(v));
uniform!(ctxt, Uniform1i, Uniform1iARB, location, v);
},
(&RawUniformValue::UnsignedInt(v), target) => {
*target = Some(RawUniformValue::UnsignedInt(v));
unsafe {
if ctxt.version >= &Version(Api::Gl, 1, 5) ||
ctxt.version >= &Version(Api::GlEs, 2, 0)
{
ctxt.gl.Uniform1ui(location, v)
} else {
assert!(ctxt.extensions.gl_arb_shader_objects);
ctxt.gl.Uniform1iARB(location, v as gl::types::GLint)
}
}
},
(&RawUniformValue::Float(v), target) => {
*target = Some(RawUniformValue::Float(v));
uniform!(ctxt, Uniform1f, Uniform1fARB, location, v);
},
(&RawUniformValue::Mat2(v), target) => {
*target = Some(RawUniformValue::Mat2(v));
uniform!(ctxt, UniformMatrix2fv, UniformMatrix2fvARB,
location, 1, gl::FALSE, v.as_ptr() as *const f32);
},
(&RawUniformValue::Mat3(v), target) => {
*target = Some(RawUniformValue::Mat3(v));
uniform!(ctxt, UniformMatrix3fv, UniformMatrix3fvARB,
location, 1, gl::FALSE, v.as_ptr() as *const f32);
},
(&RawUniformValue::Mat4(v), target) => {
*target = Some(RawUniformValue::Mat4(v));
uniform!(ctxt, UniformMatrix4fv, UniformMatrix4fvARB,
location, 1, gl::FALSE, v.as_ptr() as *const f32);
},
(&RawUniformValue::Vec2(v), target) => {
*target = Some(RawUniformValue::Vec2(v));
uniform!(ctxt, Uniform2fv, Uniform2fvARB, location, 1, v.as_ptr() as *const f32);
},
(&RawUniformValue::Vec3(v), target) => {
*target = Some(RawUniformValue::Vec3(v));
uniform!(ctxt, Uniform3fv, Uniform3fvARB, location, 1, v.as_ptr() as *const f32);
},
(&RawUniformValue::Vec4(v), target) => {
*target = Some(RawUniformValue::Vec4(v));
uniform!(ctxt, Uniform4fv, Uniform4fvARB, location, 1, v.as_ptr() as *const f32);
},
(&RawUniformValue::IntVec2(v), target) => {
*target = Some(RawUniformValue::IntVec2(v));
uniform!(ctxt, Uniform2iv, Uniform2ivARB, location, 1, v.as_ptr() as *const gl::types::GLint);
},
(&RawUniformValue::IntVec3(v), target) => {
*target = Some(RawUniformValue::IntVec3(v));
uniform!(ctxt, Uniform3iv, Uniform3ivARB, location, 1, v.as_ptr() as *const gl::types::GLint);
},
(&RawUniformValue::IntVec4(v), target) => {
*target = Some(RawUniformValue::IntVec4(v));
uniform!(ctxt, Uniform4iv, Uniform4ivARB, location, 1, v.as_ptr() as *const gl::types::GLint);
},
(&RawUniformValue::UnsignedIntVec2(v), target) => {
*target = Some(RawUniformValue::UnsignedIntVec2(v));
unsafe {
if ctxt.version >= &Version(Api::Gl, 1, 5) ||
ctxt.version >= &Version(Api::GlEs, 2, 0)
{
ctxt.gl.Uniform2uiv(location, 1, v.as_ptr() as *const gl::types::GLuint)
} else {
assert!(ctxt.extensions.gl_arb_shader_objects);
ctxt.gl.Uniform2ivARB(location, 1, v.as_ptr() as *const gl::types::GLint)
}
}
},
(&RawUniformValue::UnsignedIntVec3(v), target) => {
*target = Some(RawUniformValue::UnsignedIntVec3(v));
unsafe {
if ctxt.version >= &Version(Api::Gl, 1, 5) ||
ctxt.version >= &Version(Api::GlEs, 2, 0)
{
ctxt.gl.Uniform3uiv(location, 1, v.as_ptr() as *const gl::types::GLuint)
} else {
assert!(ctxt.extensions.gl_arb_shader_objects);
ctxt.gl.Uniform3ivARB(location, 1, v.as_ptr() as *const gl::types::GLint)
}
}
},
(&RawUniformValue::UnsignedIntVec4(v), target) => {
*target = Some(RawUniformValue::UnsignedIntVec4(v));
unsafe {
if ctxt.version >= &Version(Api::Gl, 1, 5) ||
ctxt.version >= &Version(Api::GlEs, 2, 0)
{
ctxt.gl.Uniform4uiv(location, 1, v.as_ptr() as *const gl::types::GLuint)
} else {
assert!(ctxt.extensions.gl_arb_shader_objects);
ctxt.gl.Uniform4ivARB(location, 1, v.as_ptr() as *const gl::types::GLint)
}
}
},
(&RawUniformValue::Double(v), target) => {
*target = Some(RawUniformValue::Double(v));
uniform_f64!(ctxt, Uniform1d, location, v);
},
(&RawUniformValue::DoubleMat2(v), target) => {
*target = Some(RawUniformValue::DoubleMat2(v));
uniform_f64!(ctxt, UniformMatrix2dv,
location, 1, gl::FALSE, v.as_ptr() as *const gl::types::GLdouble);
},
(&RawUniformValue::DoubleMat3(v), target) => {
*target = Some(RawUniformValue::DoubleMat3(v));
uniform_f64!(ctxt, UniformMatrix3dv,
location, 1, gl::FALSE, v.as_ptr() as *const gl::types::GLdouble);
},
(&RawUniformValue::DoubleMat4(v), target) => {
*target = Some(RawUniformValue::DoubleMat4(v));
uniform_f64!(ctxt, UniformMatrix4dv,
location, 1, gl::FALSE, v.as_ptr() as *const gl::types::GLdouble);
},
(&RawUniformValue::DoubleVec2(v), target) => {
*target = Some(RawUniformValue::DoubleVec2(v));
uniform_f64!(ctxt, Uniform2dv, location, 1, v.as_ptr() as *const gl::types::GLdouble);
},
(&RawUniformValue::DoubleVec3(v), target) => {
*target = Some(RawUniformValue::DoubleVec3(v));
uniform_f64!(ctxt, Uniform3dv, location, 1, v.as_ptr() as *const gl::types::GLdouble);
},
(&RawUniformValue::DoubleVec4(v), target) => {
*target = Some(RawUniformValue::DoubleVec4(v));
uniform_f64!(ctxt, Uniform4dv, location, 1, v.as_ptr() as *const gl::types::GLdouble);
},
(&RawUniformValue::Int64(v), target) => {
*target = Some(RawUniformValue::Int64(v));
uniform_i64!(ctxt, Uniform1i64ARB, location, v);
},
(&RawUniformValue::Int64Vec2(v), target) => {
*target = Some(RawUniformValue::Int64Vec2(v));
uniform_i64!(ctxt, Uniform2i64vARB, location, 1, v.as_ptr() as *const gl::types::GLint64);
},
(&RawUniformValue::Int64Vec3(v), target) => {
*target = Some(RawUniformValue::Int64Vec3(v));
uniform_i64!(ctxt, Uniform3i64vARB, location, 1, v.as_ptr() as *const gl::types::GLint64);
},
(&RawUniformValue::Int64Vec4(v), target) => {
*target = Some(RawUniformValue::Int64Vec4(v));
uniform_i64!(ctxt, Uniform4i64vARB, location, 1, v.as_ptr() as *const gl::types::GLint64);
},
(&RawUniformValue::UnsignedInt64(v), target) => {
*target = Some(RawUniformValue::UnsignedInt64(v));
uniform_i64!(ctxt, Uniform1ui64ARB, location, v);
},
(&RawUniformValue::UnsignedInt64Vec2(v), target) => {
*target = Some(RawUniformValue::UnsignedInt64Vec2(v));
uniform_i64!(ctxt, Uniform2ui64vARB, location, 1, v.as_ptr() as *const gl::types::GLuint64);
},
(&RawUniformValue::UnsignedInt64Vec3(v), target) => {
*target = Some(RawUniformValue::UnsignedInt64Vec3(v));
uniform_i64!(ctxt, Uniform3ui64vARB, location, 1, v.as_ptr() as *const gl::types::GLuint64);
},
(&RawUniformValue::UnsignedInt64Vec4(v), target) => {
*target = Some(RawUniformValue::UnsignedInt64Vec4(v));
uniform_i64!(ctxt, Uniform4ui64vARB, location, 1, v.as_ptr() as *const gl::types::GLuint64);
},
}
}
pub fn set_uniform_block_binding(&self, ctxt: &mut CommandContext<'_>, program: Handle,
location: gl::types::GLuint, value: gl::types::GLuint)
{
let mut blocks = self.uniform_blocks.borrow_mut();
if blocks.len() <= location as usize {
for _ in blocks.len() .. location as usize + 1 {
blocks.push(None);
}
}
assert!(ctxt.state.program == program);
match (value, &mut blocks[location as usize]) {
(a, &mut Some(b)) if a == b => (),
(a, target) => {
*target = Some(a);
match program {
Handle::Id(id) => unsafe {
ctxt.gl.UniformBlockBinding(id, location, value);
},
_ => unreachable!()
}
},
}
}
pub fn set_shader_storage_block_binding(&self, ctxt: &mut CommandContext<'_>, program: Handle,
location: gl::types::GLuint, value: gl::types::GLuint)
{
let mut blocks = self.shader_storage_blocks.borrow_mut();
if blocks.len() <= location as usize {
for _ in blocks.len() .. location as usize + 1 {
blocks.push(None);
}
}
assert!(ctxt.state.program == program);
match (value, &mut blocks[location as usize]) {
(a, &mut Some(b)) if a == b => (),
(a, target) => {
*target = Some(a);
match program {
Handle::Id(id) => unsafe {
ctxt.gl.ShaderStorageBlockBinding(id, location, value);
},
_ => unreachable!()
}
},
}
}
pub fn set_subroutine_uniforms_for_stage(&self, ctxt: &mut CommandContext<'_>,
program: Handle,
stage: ShaderStage,
indices: &[gl::types::GLuint])
{
let mut subroutine_uniforms = self.subroutine_uniforms.borrow_mut();
if let Some(stored_indices) = subroutine_uniforms.get(&stage) {
if &stored_indices[..] == indices {
return
}
}
assert!(ctxt.state.program == program);
subroutine_uniforms.insert(stage, indices.to_vec());
unsafe {
ctxt.gl.UniformSubroutinesuiv(stage.to_gl_enum(), indices.len() as gl::types::GLsizei, indices.as_ptr() as *const _);
}
}
}