Normal Map not appearing after putting a shader in the material

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1

Godot Version

4.4

Question

I have a shader activated in a MeshInstance3D and now for some reason the Normal Map option doesnt appear inside the material. How do I put a normal map?

image
image261×956 83.5 KB

Also this is the shader Im using:

shader_type spatial;
render_mode blend_mix,
	cull_disabled,
	depth_prepass_alpha,
	shadows_disabled,
	specular_disabled,
	vertex_lighting;

uniform bool affine_mapping = false;
uniform sampler2D albedo : source_color, filter_nearest;
uniform float alpha_scissor : hint_range(0, 1) = 0.5;
uniform float jitter: hint_range(0, 1) = 0.25;
uniform ivec2 resolution = ivec2(320, 240);

vec4 snap_to_position(vec4 base_position)
{
	vec4 snapped_position = base_position;
	snapped_position.xyz = base_position.xyz / base_position.w;
	
	vec2 snap_resulotion = floor(vec2(resolution) * (1.0 - jitter));
	snapped_position.x = floor(snap_resulotion.x * snapped_position.x) / snap_resulotion.x;
	snapped_position.y = floor(snap_resulotion.y * snapped_position.y) / snap_resulotion.y;
	
	snapped_position.xyz *= base_position.w;
	return snapped_position;
}

void vertex()
{
	vec4 snapped_position = snap_to_position(PROJECTION_MATRIX * MODELVIEW_MATRIX * vec4(VERTEX, 1.0));
	if (affine_mapping)
	{
		POSITION = snapped_position;
		POSITION /= abs(POSITION.w);
	}
	else
	{
		POSITION = snapped_position;
	}
}

void fragment()
{
	vec4 color_base = COLOR;
	vec4 texture_color = texture(albedo, UV);

	ALBEDO = (color_base * texture_color).rgb;
	ALPHA = texture_color.a * color_base.a;
	ALPHA_SCISSOR_THRESHOLD = alpha_scissor;
}
2

You have to program the normal map. Your render mode vertex_lighting also prevents normal mapping in any useful sense.

uniform sampler2D normal_map: hint_normal;
void fragment() {
    NORMAL = texture(normal_map, UV).xyz;
}

Your parameters are located under “Shader Parameters”

3

ok so, do I delete vertex_lighting in line 7? and modify the uniform sampler2D in line 10?

4

Yes

No, you can add another uniform near the others.

5

OK deleted the vertex_lighting in line 7 but now for “uniform bool afine_mapping = false;” it gives an error saying [Expected and identifier for render mode], do I just delete that line too?

6

Sounds like you deleted the whole line rather than deleting the vertex_lighting element in the list of render mode options. when removing from such a list keep the comma seperated pattern.

render_mode blend_mix,
	cull_disabled,
	depth_prepass_alpha,
	shadows_disabled,
	specular_disabled; // semicolon to end statement
7

ok thanks a ton, now it gives me error in line 45 “void fragment()” whats going on there? “Redefinition of “fragment””

Also now the texture is completelly gone for some reason

8

Means you’ve defined the fragment function twice, rather than combining my example into the fragment function

While erroring shader materials don’t work, so they cannot display any texture/material until the error is fixed.

9

it worked thankss :3