Multicolored mask on AnimatedSprite2D Node?

Help Shaders
,
1

Godot Version

4.6.3

Question

Hi, bit new to the forum, uh, I’m attempting to apply a mask to an AnimatedSprite2D, but I’m having some trouble in properly applying it to said sprite. As far as I can tell, the proper mask seems to be applied correctly only in one frame.

My shader code is the following:

shader_type canvas_item;

uniform sampler2D region_mask;
uniform vec4 border_color : source_color = vec4(0.7, 0.55, 0.2, 1.0);
uniform vec4 core_color : source_color = vec4(0.8, 0.1, 0.1, 1.0);

varying vec2 local_uv;

void vertex() {
local_uv = vec2(UV.x * 8.0, UV.y);
}

void fragment() {
// Called for every pixel the material is visible on.
vec4 frame = texture(TEXTURE, UV);

vec4 mask = texture(region_mask, local_uv);

vec4 result = frame;

result = mix(result, vec4(core_color.rgb, frame.a), mask.g);
result = mix(result, vec4(border_color.rgb, frame.a), mask.r);
COLOR = result;

}

I’m using a 32x32 mask, and the sprite is 256x32.

2

Use REGION_RECT to determine the actual uv range of the current frame.

3

say replace vec4 frame = texture(TEXTURE, UV); with vec4 frame = texture(TEXTURE, REGION_RECT);?

Edit: oh wait!

vec2 local_uv = (UV - REGION_RECT.xy) / REGION_RECT.zw; That did it!