Narrow SDF

[yutannihilation]

Currently, this vertex shader includes the whole screen, but only the area around circle is needed. Not sure about the performance gain by this, though.

wgpugd/src/rust/src/shaders/sdf_shape.wgsl

Lines 35 to 51 in 6aa3d00

	@stage(vertex)
	fn vs_main(
	model: VertexInput,
	instance: InstanceInput,
	) -> VertexOutput {
	var out: VertexOutput;
	out.coords = vec4<f32>(model.pos, instance.z, 1.0);
	// Y-axis is opposite
	out.center = vec2<f32>(instance.center.x, globals.resolution.y - instance.center.y);
	out.radius = instance.radius;
	out.stroke_width = instance.stroke_width;
	out.fill_color = instance.fill_color;
	out.stroke_color = instance.stroke_color;
	return out;
	}