# HG changeset patch # User Emmanuel Gil Peyrot # Date 1565955638 -7200 # Node ID 6020e33d4fc49c73a9b2d97208f2bbd0dd190b1d # Parent 1d81a449c436f5206f28509d9e221c56b0c6b391 Implement a .std renderer, and its associated VM. diff --git a/examples/stdrenderer.rs b/examples/stdrenderer.rs new file mode 100644 --- /dev/null +++ b/examples/stdrenderer.rs @@ -0,0 +1,274 @@ +use image::GenericImageView; +use luminance::context::GraphicsContext; +use luminance::framebuffer::Framebuffer; +use luminance::pipeline::BoundTexture; +use luminance::pixel::{NormRGB8UI, Floating}; +use luminance::render_state::RenderState; +use luminance::shader::program::{Program, Uniform}; +use luminance::tess::{Mode, TessBuilder, TessSliceIndex}; +use luminance::texture::{Dim2, Flat, Sampler, Texture, GenMipmaps}; +use luminance_derive::{Semantics, Vertex, UniformInterface}; +use luminance_glfw::event::{Action, Key, WindowEvent}; +use luminance_glfw::surface::{GlfwSurface, Surface, WindowDim, WindowOpt}; +use touhou::th06::anm0::Anm0; +use touhou::th06::anm0_vm::{AnmRunner, Sprite, Vertex as FakeVertex}; +use touhou::th06::std::{Stage, Position}; +use touhou::th06::std_vm::StageRunner; +use touhou::util::prng::Prng; +use touhou::util::math::perspective; +use std::cell::RefCell; +use std::fs::File; +use std::io::{BufReader, Read}; +use std::rc::Rc; +use std::env; +use std::path::Path; + +const VS: &str = r#" +in ivec3 in_position; +in vec2 in_texcoord; +in uvec4 in_color; + +uniform mat4 mvp; +uniform vec3 instance_position; + +out vec2 texcoord; +out vec4 color; + +void main() +{ + vec3 position = vec3(in_position) + instance_position; + gl_Position = mvp * vec4(position, 1.0); + texcoord = vec2(in_texcoord); + + // Normalized from the u8 being passed. + color = vec4(in_color) / 255.; +} +"#; + +const FS: &str = r#" +in vec2 texcoord; +in vec4 color; + +uniform sampler2D color_map; +uniform float fog_scale; +uniform float fog_end; +uniform vec4 fog_color; + +out vec4 frag_color; + +void main() +{ + vec4 temp_color = texture(color_map, texcoord) * color; + float depth = gl_FragCoord.z / gl_FragCoord.w; + float fog_density = clamp((fog_end - depth) * fog_scale, 0.0, 1.0); + frag_color = vec4(mix(fog_color, temp_color, fog_density).rgb, temp_color.a); +} +"#; + +#[derive(Clone, Copy, Debug, Eq, PartialEq, Semantics)] +pub enum Semantics { + #[sem(name = "in_position", repr = "[i16; 3]", wrapper = "VertexPosition")] + Position, + + #[sem(name = "in_texcoord", repr = "[f32; 2]", wrapper = "VertexTexcoord")] + Texcoord, + + #[sem(name = "in_color", repr = "[u8; 4]", wrapper = "VertexColor")] + Color, +} + +#[repr(C)] +#[derive(Clone, Copy, Debug, PartialEq, Vertex)] +#[vertex(sem = "Semantics")] +struct Vertex { + pos: VertexPosition, + uv: VertexTexcoord, + rgba: VertexColor, +} + +#[derive(UniformInterface)] +struct ShaderInterface { + // the 'static lifetime acts as “anything” here + color_map: Uniform<&'static BoundTexture<'static, Flat, Dim2, Floating>>, + + #[uniform(name = "mvp")] + mvp: Uniform<[[f32; 4]; 4]>, + + #[uniform(name = "instance_position")] + instance_position: Uniform<[f32; 3]>, + + #[uniform(name = "fog_scale")] + fog_scale: Uniform, + + #[uniform(name = "fog_end")] + fog_end: Uniform, + + #[uniform(name = "fog_color")] + fog_color: Uniform<[f32; 4]>, +} + +fn main() { + // Parse arguments. + let args: Vec<_> = env::args().collect(); + if args.len() != 4 { + eprintln!("Usage: {} ", args[0]); + return; + } + let std_filename = &args[1]; + let anm_filename = &args[2]; + let png_filename = &args[3]; + + // Open the STD file. + let file = File::open(std_filename).unwrap(); + let mut file = BufReader::new(file); + let mut buf = vec![]; + file.read_to_end(&mut buf).unwrap(); + let (_, stage) = Stage::from_slice(&buf).unwrap(); + + // Open the ANM file. + let file = File::open(anm_filename).unwrap(); + let mut file = BufReader::new(file); + let mut buf = vec![]; + file.read_to_end(&mut buf).unwrap(); + let anm0 = Anm0::from_slice(&buf).unwrap(); + + // TODO: seed this PRNG with a valid seed. + let prng = Rc::new(RefCell::new(Prng::new(0))); + + assert_eq!(std::mem::size_of::(), std::mem::size_of::()); + let mut vertices: Vec = vec![]; + let mut indices = vec![]; + + { + for model in stage.models.iter() { + let begin = vertices.len(); + for quad in model.quads.iter() { + let Position { x, y, z } = quad.pos; + + // Create the AnmRunner from the ANM and the sprite. + let sprite = Rc::new(RefCell::new(Sprite::new())); + let _anm_runner = AnmRunner::new(&anm0, quad.anm_script as u8, sprite.clone(), Rc::downgrade(&prng), 0); + let mut new_vertices: [Vertex; 6] = unsafe { std::mem::uninitialized() }; + fill_vertices(sprite.clone(), &mut new_vertices, x, y, z); + new_vertices[4] = new_vertices[0]; + new_vertices[5] = new_vertices[2]; + vertices.extend(&new_vertices); + } + let end = vertices.len(); + indices.push((begin, end)); + } + } + + let mut stage_runner = StageRunner::new(Rc::new(RefCell::new(stage))); + + let mut surface = GlfwSurface::new(WindowDim::Windowed(384, 448), "Touhou", WindowOpt::default()).unwrap(); + + // Open the image atlas matching this ANM. + let tex = load_from_disk(&mut surface, Path::new(png_filename)).expect("texture loading"); + + // set the uniform interface to our type so that we can read textures from the shader + let (program, _) = + Program::::from_strings(None, VS, None, FS).expect("program creation"); + + let tess = TessBuilder::new(&mut surface) + .add_vertices(vertices) + .set_mode(Mode::Triangle) + .build() + .unwrap(); + + let mut back_buffer = Framebuffer::back_buffer(surface.size()); + + 'app: loop { + for event in surface.poll_events() { + match event { + WindowEvent::Close | WindowEvent::Key(Key::Escape, _, Action::Release, _) => break 'app, + + WindowEvent::FramebufferSize(width, height) => { + back_buffer = Framebuffer::back_buffer([width as u32, height as u32]); + } + + _ => (), + } + } + + { + stage_runner.run_frame(); + //let sprites = stage.get_sprites(); + //fill_vertices_ptr(sprites, slice.as_mut_ptr()); + } + + // here, we need to bind the pipeline variable; it will enable us to bind the texture to the GPU + // and use it in the shader + surface + .pipeline_builder() + .pipeline(&back_buffer, [0., 0., 0., 0.], |pipeline, shd_gate| { + // bind our fancy texture to the GPU: it gives us a bound texture we can use with the shader + let bound_tex = pipeline.bind_texture(&tex); + + shd_gate.shade(&program, |rdr_gate, iface| { + // update the texture; strictly speaking, this update doesn’t do much: it just tells the GPU + // to use the texture passed as argument (no allocation or copy is performed) + iface.color_map.update(&bound_tex); + + let proj = perspective(0.5235987755982988, 384. / 448., 101010101./2010101., 101010101./10101.); + let model_view = stage_runner.get_model_view(); + let mvp = model_view * proj; + // TODO: check how to pass by reference. + iface.mvp.update(*mvp.borrow_inner()); + + let near = stage_runner.fog_near - 101010101. / 2010101.; + let far = stage_runner.fog_far - 101010101. / 2010101.; + iface.fog_color.update(stage_runner.fog_color); + iface.fog_scale.update(1. / (far - near)); + iface.fog_end.update(far); + + let stage = stage_runner.stage.borrow(); + for instance in stage.instances.iter() { + iface.instance_position.update([instance.pos.x, instance.pos.y, instance.pos.z]); + + rdr_gate.render(RenderState::default(), |tess_gate| { + let (begin, end) = indices[instance.id as usize]; + tess_gate.render(&mut surface, tess.slice(begin..end)); + }); + } + }); + }); + + surface.swap_buffers(); + } +} + +fn fill_vertices(sprite: Rc>, vertices: &mut [Vertex; 6], x: f32, y: f32, z: f32) { + let mut fake_vertices = unsafe { std::mem::transmute::<&mut [Vertex; 6], &mut [FakeVertex; 4]>(vertices) }; + let sprite = sprite.borrow(); + sprite.fill_vertices(&mut fake_vertices, x, y, z); +} + +fn load_from_disk(surface: &mut GlfwSurface, path: &Path) -> Option> { + // load the texture into memory as a whole bloc (i.e. no streaming) + match image::open(&path) { + Ok(img) => { + let (width, height) = img.dimensions(); + let texels = img + .pixels() + .map(|(_x, _y, rgb)| (rgb[0], rgb[1], rgb[2])) + .collect::>(); + + // create the luminance texture; the third argument is the number of mipmaps we want (leave it + // to 0 for now) and the latest is a the sampler to use when sampling the texels in the + // shader (we’ll just use the default one) + let tex = + Texture::new(surface, [width, height], 0, &Sampler::default()).expect("luminance texture creation"); + + // the first argument disables mipmap generation (we don’t care so far) + tex.upload(GenMipmaps::No, &texels); + + Some(tex) + } + + Err(e) => { + eprintln!("cannot open image {}: {}", path.display(), e); + None + } + } +} diff --git a/src/th06/interpolator.rs b/src/th06/interpolator.rs --- a/src/th06/interpolator.rs +++ b/src/th06/interpolator.rs @@ -75,3 +75,4 @@ macro_rules! generate_interpolator { generate_interpolator!(Interpolator1, 1); generate_interpolator!(Interpolator2, 2); generate_interpolator!(Interpolator3, 3); +generate_interpolator!(Interpolator4, 4); diff --git a/src/th06/mod.rs b/src/th06/mod.rs --- a/src/th06/mod.rs +++ b/src/th06/mod.rs @@ -6,5 +6,6 @@ pub mod anm0_vm; pub mod ecl; pub mod ecl_vm; pub mod std; +pub mod std_vm; pub mod enemy; pub mod interpolator; diff --git a/src/th06/std.rs b/src/th06/std.rs --- a/src/th06/std.rs +++ b/src/th06/std.rs @@ -235,7 +235,7 @@ fn parse_stage(input: &[u8]) -> IResult< let data = &i2[..12]; let (data, instr) = parse_instruction_args(data, opcode)?; assert_eq!(data.len(), 0); - println!("{:?}", instr); + println!("{} {:?}", time, instr); script.push(Call { time, instr }); i = &i2[12..]; } diff --git a/src/th06/std_vm.rs b/src/th06/std_vm.rs new file mode 100644 --- /dev/null +++ b/src/th06/std_vm.rs @@ -0,0 +1,94 @@ +//! Interpreter of STD files. + +use crate::th06::std::{Stage, Position, Call, Instruction}; +use crate::th06::interpolator::{Interpolator1, Interpolator4}; +use crate::util::math::{Mat4, perspective, setup_camera}; +use std::cell::RefCell; +use std::rc::Rc; + +/// Interpreter for Stage. +pub struct StageRunner { + /// XXX: no pub. + pub stage: Rc>, + frame: u32, + + // TODO: use interpolators. + position: [f32; 3], + direction: [f32; 3], + + /// XXX: no pub. + pub fog_color: [f32; 4], + /// XXX: no pub. + pub fog_near: f32, + /// XXX: no pub. + pub fog_far: f32, +} + +impl StageRunner { + /// Create a new StageRunner attached to a Stage. + pub fn new(stage: Rc>) -> StageRunner { + StageRunner { + stage, + frame: 0, + position: [0.; 3], + direction: [0.; 3], + fog_color: [1.; 4], + fog_near: 0., + fog_far: 1000., + } + } + + /// Advance the simulation one frame. + pub fn run_frame(&mut self) { + let stage = self.stage.borrow(); + + for Call { time, instr } in stage.script.iter() { + if *time != self.frame { + continue; + } + + println!("{} {:?}", time, instr); + + match *instr { + Instruction::SetViewpos(x, y, z) => { + self.position[0] = x; + self.position[1] = y; + self.position[2] = z; + } + Instruction::SetFog(b, g, r, a, near, far) => { + self.fog_color = [r as f32 / 255., g as f32 / 255., b as f32 / 255., a as f32 / 255.]; + self.fog_near = near; + self.fog_far = far; + } + Instruction::SetViewpos2(dx, dy, dz) => { + self.direction[0] = dx; + self.direction[1] = dy; + self.direction[2] = dz; + } + Instruction::StartInterpolatingViewpos2(frame, _, _) => { + } + Instruction::StartInterpolatingFog(frame, _, _) => { + } + Instruction::Unknown(_, _, _) => { + } + } + } + + self.frame += 1; + } + + /// Generate the model-view matrix for the current frame. + pub fn get_model_view(&self) -> Mat4 { + let [x, y, z] = self.position; + + let [dx, dy, dz] = self.direction; + + let view = setup_camera(dx, dy, dz); + + let model = Mat4::new([[1., 0., 0., 0.], + [0., 1., 0., 0.], + [0., 0., 1., 0.], + [-x, -y, -z, 1.]]); + model * view + } +}