mpv光标同步绘制测试

cursor_circle.glsl

// 在鼠标光标位置绘制一个圆形


//!PARAM mouse_x
//!TYPE DYNAMIC float
//!MINIMUM 0
//!MAXIMUM 99999
0.0

//!PARAM mouse_y
//!TYPE DYNAMIC float
//!MINIMUM 0
//!MAXIMUM 99999
0.0

//!PARAM circle_rad
//!TYPE float
//!MINIMUM 1
//!MAXIMUM 500
50.0

//!PARAM circle_tk
//!TYPE float
//!MINIMUM 0
//!MAXIMUM 50
10.0

//!PARAM circle_r
//!TYPE float
//!MINIMUM 0.0
//!MAXIMUM 1.0
0.5

//!PARAM circle_g
//!TYPE float
//!MINIMUM 0.0
//!MAXIMUM 1.0
0.5

//!PARAM circle_b
//!TYPE float
//!MINIMUM 0.0
//!MAXIMUM 1.0
0.5

//!PARAM circle_a
//!TYPE float
//!MINIMUM 0.0
//!MAXIMUM 1.0
0.5

//!PARAM enabled
//!TYPE DEFINE
//!MINIMUM 0
//!MAXIMUM 1
1


//!HOOK OUTPUT
//!BIND HOOKED
//!DESC Cursor Circle example
//!WHEN enabled

vec4 hook() {

	vec4 color = HOOKED_texOff(0);
	vec2 frag_pos = HOOKED_pos * target_size;
	vec2 center = vec2(mouse_x, mouse_y);
	float dist = length(frag_pos - center);
	vec3 circle_color = vec3(circle_r, circle_g, circle_b);
	float alpha = 0.0;

	if (circle_tk <= 0.0) {
		alpha = 1.0 - smoothstep(circle_rad - 1.0, circle_rad + 1.0, dist);
	} else {
		float inner = circle_rad - circle_tk * 0.5;
		float outer = circle_rad + circle_tk * 0.5;
		float outer_alpha = 1.0 - smoothstep(outer - 1.0, outer + 1.0, dist);
		float inner_alpha = smoothstep(inner - 1.0, inner + 1.0, dist);
		alpha = outer_alpha * inner_alpha;
	}

	alpha *= circle_a;
	color.rgb = mix(color.rgb, circle_color, alpha);
	return color;

}

cursor_circle.lua

-- 此脚本可用于同步光标位置给着色器

local function on_mouse_pos_change(_, pos)
	if pos == nil then return end
	if not pos.hover then return end

	local x = pos.x or 0
	local y = pos.y or 0
	mp.commandv("change-list", "glsl-shader-opts", "append", string.format("mouse_x=%f", x))
	mp.commandv("change-list", "glsl-shader-opts", "append", string.format("mouse_y=%f", y))
end

mp.observe_property("mouse-pos", "native", on_mouse_pos_change)