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use gfx;
use gfx::handle::{DepthStencilView, RenderTargetView};
use gfx::traits::*;
use gfx_text;
use vecmath::*;
use line_renderer::LineRenderer;
#[derive(Debug)]
pub enum DebugRendererError {
PipelineStateError(gfx::PipelineStateError<String>),
UpdateError(gfx::UpdateError<usize>),
GfxTextError(gfx_text::Error)
}
impl From<gfx::PipelineStateError<String>> for DebugRendererError {
fn from(err: gfx::PipelineStateError<String>) -> DebugRendererError {
DebugRendererError::PipelineStateError(err)
}
}
impl From<gfx::UpdateError<usize>> for DebugRendererError {
fn from(err: gfx::UpdateError<usize>) -> DebugRendererError {
DebugRendererError::UpdateError(err)
}
}
impl From<gfx_text::Error> for DebugRendererError {
fn from(err: gfx_text::Error) -> DebugRendererError {
DebugRendererError::GfxTextError(err)
}
}
pub struct DebugRenderer<R: gfx::Resources, F: Factory<R>> {
line_renderer: LineRenderer<R>,
text_renderer: gfx_text::Renderer<R, F>,
factory: F,
}
impl<R: gfx::Resources, F: Factory<R>> DebugRenderer<R, F> {
pub fn new (
factory: F,
text_renderer: gfx_text::Renderer<R, F>,
initial_buffer_size: usize,
) -> Result<DebugRenderer<R, F>, DebugRendererError> {
let mut factory = factory;
let line_renderer = LineRenderer::new(&mut factory, initial_buffer_size);
Ok(DebugRenderer {
line_renderer: line_renderer,
text_renderer: text_renderer,
factory: factory,
})
}
pub fn draw_line(&mut self, start: [f32; 3], end: [f32; 3], color: [f32; 4]) {
self.line_renderer.draw_line(start, end, color);
}
pub fn draw_marker(&mut self, position: [f32; 3], size: f32, color: [f32; 4]) {
self.line_renderer.draw_line(vec3_add(position, [size, 0.0, 0.0]),
vec3_add(position, [-size, 0.0, 0.0]),
color);
self.line_renderer.draw_line(vec3_add(position, [0.0, size, 0.0]),
vec3_add(position, [0.0, -size, 0.0]),
color);
self.line_renderer.draw_line(vec3_add(position, [0.0, 0.0, size]),
vec3_add(position, [0.0, 0.0, -size]),
color);
}
pub fn draw_text_on_screen (
&mut self,
text: &str,
screen_position: [i32; 2],
color: [f32; 4],
) {
self.text_renderer.add(text, screen_position, color);
}
pub fn draw_text_at_position (
&mut self,
text: &str,
world_position: [f32; 3],
color: [f32; 4],
) {
self.text_renderer.add_at(text, world_position, color);
}
pub fn render<C: gfx::CommandBuffer<R>, T: gfx::format::RenderFormat>(
&mut self,
encoder: &mut gfx::Encoder<R, C>,
color_target: &RenderTargetView<R, T>,
depth_target: &DepthStencilView<R, gfx::format::DepthStencil>,
projection: [[f32; 4]; 4],
) -> Result<(), DebugRendererError> {
self.line_renderer.render(encoder, &mut self.factory,
color_target, depth_target, projection)?;
self.text_renderer.draw_at(encoder, color_target, projection)?;
Ok(())
}
}