├── .gitignore ├── Cargo.toml ├── LICENSE-APACHE ├── LICENSE-MIT ├── README.md ├── rustfmt.toml ├── shaders ├── glsl_150 │ ├── fs.glsl │ └── vs.glsl └── hlsl │ ├── compile.cmd │ ├── ps.fx │ ├── shaders.hlsl │ └── vs.fx └── src └── lib.rs /.gitignore: -------------------------------------------------------------------------------- 1 | # Generated by Cargo 2 | # will have compiled files and executables 3 | /target/ 4 | 5 | # Remove Cargo.lock from gitignore if creating an executable, leave it for libraries 6 | # More information here http://doc.crates.io/guide.html#cargotoml-vs-cargolock 7 | Cargo.lock 8 | .project 9 | /.settings/ -------------------------------------------------------------------------------- /Cargo.toml: -------------------------------------------------------------------------------- 1 | [package] 2 | name = "nuklear-backend-gfx" 3 | version = "0.9.0" 4 | authors = ["Serhii Plyhun "] 5 | keywords = ["widgets", "gui", "interface", "graphics", "gfx"] 6 | description = "A gfx-rs drawing backend for Rust wrapper for Nuklear 2D GUI library" 7 | license = "MIT OR Apache-2.0" 8 | readme = "README.md" 9 | repository = "https://github.com/snuk182/nuklear-backend-gfx.git" 10 | homepage = "https://github.com/snuk182/nuklear-backend-gfx" 11 | edition = "2018" 12 | 13 | [lib] 14 | name = "nuklear_backend_gfx" 15 | path = "src/lib.rs" 16 | 17 | [dependencies] 18 | log = "~0.3" 19 | gfx = "~0.18" 20 | nuklear-rust = "~0.6" 21 | -------------------------------------------------------------------------------- /LICENSE-APACHE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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IN NO EVENT SHALL THE 16 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 17 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 18 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 19 | SOFTWARE. 20 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # nuklear-backend-gfx 2 | 3 | [![Latest Version](https://img.shields.io/crates/v/nuklear-backend-gfx.svg)](https://crates.io/crates/nuklear-backend-gfx) 4 | 5 | A gfx-rs drawing backend for the [Rust bindings](https://github.com/snuk182/nuklear-rust) for the [Nuklear](https://github.com/vurtun/nuklear) 2D immediate GUI library. 6 | -------------------------------------------------------------------------------- /rustfmt.toml: -------------------------------------------------------------------------------- 1 | max_width = 250 2 | -------------------------------------------------------------------------------- /shaders/glsl_150/fs.glsl: -------------------------------------------------------------------------------- 1 | #version 150 2 | precision mediump float; 3 | uniform sampler2D Texture; 4 | in vec2 Frag_UV; 5 | in vec4 Frag_Color; 6 | out vec4 Target0; 7 | void main(){ 8 | Target0 = Frag_Color * texture(Texture, Frag_UV.st); 9 | } 10 | -------------------------------------------------------------------------------- /shaders/glsl_150/vs.glsl: -------------------------------------------------------------------------------- 1 | #version 150 2 | uniform Locals { 3 | mat4 ProjMtx; 4 | }; 5 | in vec2 Position; 6 | in vec2 TexCoord; 7 | in vec4 Color; 8 | out vec2 Frag_UV; 9 | out vec4 Frag_Color; 10 | void main() { 11 | Frag_UV = TexCoord; 12 | Frag_Color = Color; 13 | gl_Position = ProjMtx * vec4(Position.xy, 0, 1); 14 | } 15 | -------------------------------------------------------------------------------- /shaders/hlsl/compile.cmd: -------------------------------------------------------------------------------- 1 | @echo on 2 | set FXC="C:\Program Files (x86)\Windows Kits\10\bin\x64\fxc.exe" -nologo 3 | %FXC% /T vs_4_0 /E Vertex /Fo vs.fx shaders.hlsl 4 | %FXC% /T ps_4_0 /E Pixel /Fo ps.fx shaders.hlsl 5 | -------------------------------------------------------------------------------- /shaders/hlsl/ps.fx: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/snuk182/nuklear-backend-gfx/a30f653cac5bbf7f6e16c60246f86dbd8f0b451c/shaders/hlsl/ps.fx -------------------------------------------------------------------------------- /shaders/hlsl/shaders.hlsl: -------------------------------------------------------------------------------- 1 | SamplerState Texture_; 2 | Texture2D Texture; 3 | 4 | cbuffer Locals { 5 | float4x4 ProjMtx; 6 | }; 7 | 8 | struct PS_INPUT 9 | { 10 | float4 pos : SV_POSITION; 11 | float4 col : COLOR0; 12 | float2 uv : TEXCOORD0; 13 | }; 14 | 15 | PS_INPUT Vertex(float2 pos : Position, float4 col : Color, float2 uv : TexCoord) 16 | { 17 | PS_INPUT output; 18 | output.pos = mul(ProjMtx, float4(pos.xy, 0.f, 1.f)); 19 | output.col = col; 20 | output.uv = uv; 21 | return output; 22 | } 23 | 24 | float4 Pixel(PS_INPUT input) : SV_Target 25 | { 26 | return input.col * Texture.Sample(Texture_, input.uv); 27 | } 28 | -------------------------------------------------------------------------------- /shaders/hlsl/vs.fx: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/snuk182/nuklear-backend-gfx/a30f653cac5bbf7f6e16c60246f86dbd8f0b451c/shaders/hlsl/vs.fx -------------------------------------------------------------------------------- /src/lib.rs: -------------------------------------------------------------------------------- 1 | #![cfg_attr(feature = "cargo-clippy", allow(too_many_arguments))] // TODO later 2 | 3 | #[macro_use] 4 | extern crate gfx; 5 | 6 | use nuklear::{Buffer, Context, ConvertConfig, DrawVertexLayoutAttribute, DrawVertexLayoutElements, DrawVertexLayoutFormat, Handle, Size, Vec2}; 7 | 8 | use gfx::format::{U8Norm, Unorm, R8_G8_B8_A8}; 9 | use gfx::handle::{Buffer as GfxBuffer, RenderTargetView, Sampler, ShaderResourceView}; 10 | use gfx::texture::{AaMode, Kind, Mipmap}; 11 | use gfx::traits::FactoryExt; 12 | use gfx::{Encoder, Factory, Resources}; 13 | 14 | pub type ColorFormat = gfx::format::Rgba8; 15 | 16 | #[derive(Debug, Clone, Copy, PartialEq, Eq)] 17 | pub enum GfxBackend { 18 | OpenGlsl150, 19 | DX11Hlsl, 20 | } 21 | 22 | gfx_defines! { 23 | vertex Vertex { 24 | pos: [f32; 2] = "Position", 25 | tex: [f32; 2] = "TexCoord", 26 | col: [U8Norm; 4] = "Color", 27 | } 28 | 29 | constant Locals { 30 | proj: [[f32; 4]; 4] = "ProjMtx", 31 | } 32 | 33 | pipeline pipe { 34 | vbuf: gfx::VertexBuffer = (), 35 | tex: gfx::TextureSampler<[f32; 4]> = "Texture", 36 | output: gfx::BlendTarget = ("Target0", gfx::state::ColorMask::all(), gfx::preset::blend::ALPHA), 37 | locals: gfx::ConstantBuffer = "Locals", 38 | scissors: gfx::Scissor = (), 39 | } 40 | } 41 | 42 | impl Default for Vertex { 43 | fn default() -> Self { 44 | unsafe { ::std::mem::zeroed() } 45 | } 46 | } 47 | 48 | pub struct Drawer { 49 | cmd: Buffer, 50 | pso: gfx::PipelineState, 51 | smp: Sampler, 52 | tex: Vec>, 53 | vbf: GfxBuffer, 54 | ebf: GfxBuffer, 55 | lbf: GfxBuffer, 56 | vsz: usize, 57 | esz: usize, 58 | vle: DrawVertexLayoutElements, 59 | 60 | pub col: Option>, 61 | } 62 | 63 | impl Drawer { 64 | pub fn new(factory: &mut F, col: RenderTargetView, texture_count: usize, vbo_size: usize, ebo_size: usize, command_buffer: Buffer, backend: GfxBackend) -> Drawer 65 | where 66 | F: Factory, 67 | { 68 | use gfx::pso::buffer::Structure; 69 | 70 | let vs: &[u8] = match backend { 71 | GfxBackend::OpenGlsl150 => include_bytes!("../shaders/glsl_150/vs.glsl"), 72 | GfxBackend::DX11Hlsl => include_bytes!("../shaders/hlsl/vs.fx"), 73 | }; 74 | 75 | let fs: &[u8] = match backend { 76 | GfxBackend::OpenGlsl150 => include_bytes!("../shaders/glsl_150/fs.glsl"), 77 | GfxBackend::DX11Hlsl => include_bytes!("../shaders/hlsl/ps.fx"), 78 | //_ => &[0u8; 0], 79 | }; 80 | 81 | Drawer { 82 | cmd: command_buffer, 83 | col: Some(col), 84 | smp: factory.create_sampler_linear(), 85 | pso: factory.create_pipeline_simple(vs, fs, pipe::new()).unwrap(), 86 | tex: Vec::with_capacity(texture_count + 1), 87 | vbf: factory.create_upload_buffer::(vbo_size).unwrap(), 88 | ebf: factory.create_upload_buffer::(ebo_size).unwrap(), 89 | vsz: vbo_size, 90 | esz: ebo_size, 91 | lbf: factory.create_constant_buffer::(1), 92 | vle: DrawVertexLayoutElements::new(&[ 93 | (DrawVertexLayoutAttribute::Position, DrawVertexLayoutFormat::Float, Vertex::query("Position").unwrap().offset as Size), 94 | (DrawVertexLayoutAttribute::TexCoord, DrawVertexLayoutFormat::Float, Vertex::query("TexCoord").unwrap().offset as Size), 95 | (DrawVertexLayoutAttribute::Color, DrawVertexLayoutFormat::R8G8B8A8, Vertex::query("Color").unwrap().offset as Size), 96 | (DrawVertexLayoutAttribute::AttributeCount, DrawVertexLayoutFormat::Count, 0), 97 | ]), 98 | } 99 | } 100 | 101 | pub fn add_texture(&mut self, factory: &mut F, image: &[u8], width: u32, height: u32) -> Handle 102 | where 103 | F: Factory, 104 | { 105 | let (_, view) = factory.create_texture_immutable_u8::(Kind::D2(width as u16, height as u16, AaMode::Single), Mipmap::Provided, &[image]).unwrap(); 106 | 107 | self.tex.push(view); 108 | 109 | Handle::from_id(self.tex.len() as i32) 110 | } 111 | 112 | pub fn draw>(&mut self, ctx: &mut Context, cfg: &mut ConvertConfig, encoder: &mut Encoder, factory: &mut F, width: u32, height: u32, scale: Vec2) 113 | where 114 | F: Factory, 115 | { 116 | use gfx::IntoIndexBuffer; 117 | 118 | if self.col.clone().is_none() { 119 | return; 120 | } 121 | 122 | let ortho = [ 123 | [2.0f32 / width as f32, 0.0f32, 0.0f32, 0.0f32], 124 | [0.0f32, -2.0f32 / height as f32, 0.0f32, 0.0f32], 125 | [0.0f32, 0.0f32, -1.0f32, 0.0f32], 126 | [-1.0f32, 1.0f32, 0.0f32, 1.0f32], 127 | ]; 128 | 129 | cfg.set_vertex_layout(&self.vle); 130 | cfg.set_vertex_size(::std::mem::size_of::() as Size); 131 | 132 | { 133 | let mut rwv = factory.write_mapping(&self.vbf).unwrap(); 134 | let mut rvbuf = unsafe { ::std::slice::from_raw_parts_mut(&mut *rwv as *mut [Vertex] as *mut u8, ::std::mem::size_of::() * self.vsz) }; 135 | let mut vbuf = Buffer::with_fixed(&mut rvbuf); 136 | 137 | let mut rwe = factory.write_mapping(&self.ebf).unwrap(); 138 | let mut rebuf = unsafe { ::std::slice::from_raw_parts_mut(&mut *rwe as *mut [u16] as *mut u8, ::std::mem::size_of::() * self.esz) }; 139 | let mut ebuf = Buffer::with_fixed(&mut rebuf); 140 | 141 | ctx.convert(&mut self.cmd, &mut vbuf, &mut ebuf, cfg); 142 | } 143 | 144 | let mut slice = ::gfx::Slice { 145 | start: 0, 146 | end: 0, 147 | base_vertex: 0, 148 | instances: None, 149 | buffer: self.ebf.clone().into_index_buffer(factory), 150 | }; 151 | 152 | encoder.update_constant_buffer(&self.lbf, &Locals { proj: ortho }); 153 | 154 | for cmd in ctx.draw_command_iterator(&self.cmd) { 155 | if cmd.elem_count() < 1 { 156 | continue; 157 | } 158 | 159 | slice.end = slice.start + cmd.elem_count(); 160 | 161 | let id = cmd.texture().id().unwrap(); 162 | 163 | let x = cmd.clip_rect().x * scale.x; 164 | let y = cmd.clip_rect().y * scale.y; 165 | let w = cmd.clip_rect().w * scale.x; 166 | let h = cmd.clip_rect().h * scale.y; 167 | 168 | let sc_rect = gfx::Rect { 169 | x: (if x < 0f32 { 0f32 } else { x }) as u16, 170 | y: (if y < 0f32 { 0f32 } else { y }) as u16, 171 | w: (if x < 0f32 { w + x } else { w }) as u16, 172 | h: (if y < 0f32 { h + y } else { h }) as u16, 173 | }; 174 | 175 | let res = self.find_res(id).unwrap(); 176 | 177 | let data = pipe::Data { 178 | vbuf: self.vbf.clone(), 179 | tex: (res, self.smp.clone()), 180 | output: self.col.clone().unwrap(), 181 | scissors: sc_rect, 182 | locals: self.lbf.clone(), 183 | }; 184 | 185 | encoder.draw(&slice, &self.pso, &data); 186 | 187 | slice.start = slice.end; 188 | } 189 | } 190 | 191 | fn find_res(&self, id: i32) -> Option> { 192 | if id > 0 && id as usize <= self.tex.len() { 193 | Some(self.tex[(id - 1) as usize].clone()) 194 | } else { 195 | None 196 | } 197 | } 198 | } 199 | --------------------------------------------------------------------------------