PyTouhou: examples/eclrenderer.rs comparison

comparison examples/eclrenderer.rs @ 658:3a9d82a02c88

Add a contructor for enemy, and a new example.

author	Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date	Sat, 10 Aug 2019 12:48:01 +0200
parents
children	31fc0d881105

comparison

equal deleted inserted replaced

-:ff7b6355cdf1
+:3a9d82a02c88
+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};
+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::{Sprite, Vertex as FakeVertex};
+use touhou::th06::ecl::Ecl;
+use touhou::th06::enemy::{Enemy, Game, Position};
+use touhou::util::math::{perspective, setup_camera};
+use touhou::util::prng::Prng;
+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;
+out vec2 texcoord;
+out vec4 color;
+void main()
+{
+gl_Position = mvp * vec4(vec3(in_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;
+out vec4 frag_color;
+void main()
+{
+frag_color = texture(color_map, texcoord) * color;
+}
+"#;
+#[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]>,
+}
+fn main() {
+// Parse arguments.
+let args: Vec<_> = env::args().collect();
+if args.len() != 5 {
+eprintln!("Usage: {} <ECL file> <sub number> <ANM file> <PNG file>", args[0]);
+return;
+}
+let ecl_filename = &args[1];
+let sub = args[2].parse().expect("number");
+let anm_filename = &args[3];
+let png_filename = &args[4];
+// Open the ECL file.
+let file = File::open(ecl_filename).unwrap();
+let mut file = BufReader::new(file);
+let mut buf = vec![];
+file.read_to_end(&mut buf).unwrap();
+let (_, ecl) = Ecl::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();
+let anm0 = Rc::new(RefCell::new(anm0));
+if ecl.subs.len() < sub {
+eprintln!("This ecl doesn’t contain a sub named {}.", sub);
+return;
+}
+// TODO: seed this PRNG with a valid seed.
+let prng = Rc::new(RefCell::new(Prng::new(0)));
+// Create the Game god object.
+let game = Game::new(prng);
+let game = Rc::new(RefCell::new(game));
+// And the enemy object.
+let mut enemy = Enemy::new(Position::new(0., 0.), 500, 0, 640, Rc::downgrade(&anm0), Rc::downgrade(&game));
+enemy.set_anim(0);
+assert_eq!(std::mem::size_of::<Vertex>(), std::mem::size_of::<FakeVertex>());
+let vertices: [Vertex; 4] = unsafe { std::mem::uninitialized() };
+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::<Semantics, (), ShaderInterface>::from_strings(None, VS, None, FS).expect("program creation");
+let mut tess = TessBuilder::new(&mut surface)
+.add_vertices(vertices)
+.set_mode(Mode::TriangleFan)
+.build()
+.unwrap();
+let mut back_buffer = Framebuffer::back_buffer(surface.size());
+let mut frame = 0;
+'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]);
+}
+_ => (),
+}
+}
+if frame == 60 {
+break;
+}
+frame += 1;
+{
+let mut slice = tess
+.as_slice_mut()
+.unwrap();
+let mut game = game.borrow_mut();
+game.run_frame();
+let sprites = game.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 mvp = ortho_2d(0., 384., 448., 0.);
+let proj = perspective(0.5235987755982988, 384. / 448., 101010101./2010101., 101010101./10101.);
+let view = setup_camera(0., 0., 1.);
+let mvp = view * proj;
+//println!("{:#?}", mvp);
+// TODO: check how to pass by reference.
+iface.mvp.update(*mvp.borrow_inner());
+rdr_gate.render(RenderState::default(), |tess_gate| {
+// render the tessellation to the surface the regular way and let the vertex shader’s
+// magic do the rest!
+tess_gate.render(&mut surface, (&tess).into());
+});
+});
+});
+surface.swap_buffers();
+}
+}
+fn fill_vertices_ptr(sprites: Vec<Rc<RefCell<Sprite>>>, vertices: *mut Vertex) {
+let mut fake_vertices = unsafe { std::mem::transmute::<*mut Vertex, &mut [FakeVertex; 4]>(vertices) };
+for sprite in sprites {
+let sprite = sprite.borrow();
+sprite.fill_vertices(&mut fake_vertices);
+}
+}
+fn load_from_disk(surface: &mut GlfwSurface, path: &Path) -> Option<Texture<Flat, Dim2, NormRGB8UI>> {
+// 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::<Vec<_>>();
+// 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
+}
+}
+}

Mercurial > touhou

comparison examples/eclrenderer.rs @ 658:3a9d82a02c88