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|
use luminance::context::GraphicsContext;
use luminance::pipeline::PipelineState;
use luminance::render_state::RenderState;
use luminance::shader::program::Program;
use luminance::tess::{Mode, TessBuilder, TessSliceIndex};
use luminance_derive::{Semantics, Vertex};
use luminance_glfw::{GlfwSurface, Surface, WindowDim, WindowEvent, WindowOpt};
#[derive(Vertex)]
#[vertex(sem = "VertexSemantics")]
pub struct Vertex {
position: VertexPosition,
#[vertex(normalized = "true")]
color: VertexRGB,
}
#[derive(Copy, Clone, Debug, Semantics)]
pub enum VertexSemantics {
#[sem(name = "position", repr = "[f32; 2]", wrapper = "VertexPosition")]
Position,
#[sem(name = "color", repr = "[u8; 3]", wrapper = "VertexRGB")]
Color,
}
fn gen_vertices() -> Vec<Vertex> {
let mut vertices: Vec<Vertex> = Vec::new();
vertices.push(Vertex {
position: VertexPosition::new([-0.5, -0.5]),
color: VertexRGB::new([255, 0, 0]),
});
vertices.push(Vertex {
position: VertexPosition::new([0.5, -0.5]),
color: VertexRGB::new([0, 255, 0]),
});
vertices.push(Vertex {
position: VertexPosition::new([0.0, 0.5]),
color: VertexRGB::new([0, 0, 255]),
});
vertices
}
fn alter_vertices(vertices: &mut Vec<Vertex>) {
for vertex in vertices {
vertex.position[0] += 0.01;
if vertex.color[1] < 255 {
vertex.color[1] += 1;
}
}
}
fn main() {
let mut surface =
GlfwSurface::new(WindowDim::Windowed(500, 500), "art", WindowOpt::default()).unwrap();
//GlfwSurface::new(WindowDim::Fullscreen, "art", WindowOpt::default()).unwrap();
let program: Program<VertexSemantics, (), ()> =
Program::from_strings(None, include_str!("vs.glsl"), None, include_str!("fs.glsl"))
.unwrap()
.ignore_warnings();
let mut vertices = gen_vertices();
let mut run = true;
while run {
for event in surface.poll_events() {
if let WindowEvent::Close = event {
run = false;
}
}
let back_buffer = surface.back_buffer().unwrap();
alter_vertices(&mut vertices);
let triangle = TessBuilder::new(&mut surface)
.add_vertices(&vertices)
.set_mode(Mode::Triangle)
.build()
.unwrap();
surface.pipeline_builder().pipeline(
&back_buffer,
&PipelineState::default(),
|_pipeline, mut shd_gate| {
shd_gate.shade(&program, |_, mut rdr_gate| {
rdr_gate.render(&RenderState::default(), |mut tess_gate| {
tess_gate.render(triangle.slice(..));
});
});
},
);
surface.swap_buffers();
}
}
|
