Shader code
shader_type spatial;
render_mode vertex_lighting, skip_vertex_transform,
specular_phong, diffuse_lambert_wrap, shadows_disabled;
uniform vec4 modulate: hint_color = vec4(1,1,1,1);
uniform sampler2D image_texture: hint_albedo;
uniform vec2 uv_scrolling_velocity = vec2(0.0);
const float vertex_snapping_offset = 0.8;
varying float vertex_distance;
void vertex() {
UV += uv_scrolling_velocity * TIME;
VERTEX = (MODELVIEW_MATRIX * vec4(VERTEX, 1.0)).xyz;
float z_origin = VERTEX.z;
float snap_i = (1.0 - vertex_snapping_offset) * min(VIEWPORT_SIZE.x, VIEWPORT_SIZE.y) / 2.0;
float projection_w = (PROJECTION_MATRIX * vec4(VERTEX, 1.0)).w;
VERTEX = round(VERTEX / projection_w * snap_i) / snap_i * projection_w;
VERTEX = VERTEX;
NORMAL = (MODELVIEW_MATRIX * vec4(NORMAL, 0.0)).xyz;
vertex_distance = length((WORLD_MATRIX * vec4(VERTEX, 1.0)));
UV *= VERTEX.z;
}
float get_dither_brightness(vec3 given_color, vec4 fragcoord) {
int x = int(fragcoord.x) % 4;
int y = int(fragcoord.y) % 4;
const vec3 luminance = vec3(0.2126, 0.7152, 0.0722);
float calculated_brightness = (luminance.r * given_color.r) + (luminance.g * given_color.g) + (luminance.b * given_color.b);
float thresholdMatrix[16] = float[16] (
1.0 / 17.0, 9.0 / 17.0, 3.0 / 17.0, 11.0 / 17.0,
13.0 / 17.0, 5.0 / 17.0, 15.0 / 17.0, 7.0 / 17.0,
4.0 / 17.0, 12.0 / 17.0, 2.0 / 17.0, 10.0 / 17.0,
16.0 / 17.0, 8.0 / 17.0, 14.0 / 17.0, 6.0 / 17.0
);
float dithering = thresholdMatrix[x * 4 + y];
if ((calculated_brightness - 0.2 < dithering) && (vertex_distance < 60.)) {
return ((dithering - 0.5) * 0.25) + 1.0;
} else {
return 1.;
}
}
void fragment() {
vec2 uv = UV / VERTEX.z;
vec3 texture_rgb = (texture(image_texture, uv).rgb * COLOR.rgb) * modulate.rgb;
vec4 texture_rgba = vec4(texture_rgb.r, texture_rgb.g, texture_rgb.b, 1.0);
texture_rgba = texture_rgba * get_dither_brightness(texture_rgba.rgb, FRAGCOORD);
ALBEDO = texture_rgba.rgb;
ALPHA = texture(image_texture, uv).a * modulate.a;
ALPHA_SCISSOR = 0.1;
}
Tags
psx,
retro,
vertex lighting
Your shader is amazing, but could you help me with removing the texture afflining?
Nevermind I figured it out. Again, thank you for this amazing shader.
remember to tell what you did if you found out :3 chances are someone else might run into the same problem someday ^^’
I have this error in the shader file: Invalid render mode: ‘specular_phong’.
I fixed this for godot 4.1.1, sadly, the phong shading was removed, I am looking into recreating it with shaders.
shader_type spatial; render_mode vertex_lighting, skip_vertex_transform, specular_schlick_ggx, diffuse_lambert_wrap, shadows_disabled; uniform vec4 modulate: source_color = vec4(1.0); uniform sampler2D albedo: hint_default_black, filter_nearest; uniform vec2 uv_scrolling_velocity = vec2(0.0); const float vertex_snapping_offset = 0.8; varying float vertex_distance; void vertex() { UV += uv_scrolling_velocity * TIME; VERTEX = (MODELVIEW_MATRIX * vec4(VERTEX, 1.0)).xyz; float z_origin = VERTEX.z; float snap_i = (1.0 - vertex_snapping_offset) * min(VIEWPORT_SIZE.x, VIEWPORT_SIZE.y) / 2.0; float projection_w = (PROJECTION_MATRIX * vec4(VERTEX, 1.0)).w; VERTEX = round(VERTEX / projection_w * snap_i) / snap_i * projection_w; VERTEX = VERTEX; NORMAL = (MODELVIEW_MATRIX * vec4(NORMAL, 0.0)).xyz; vertex_distance = length((MODEL_MATRIX * vec4(VERTEX, 1.0))); UV *= VERTEX.z; } float get_dither_brightness(vec3 given_color, vec4 fragcoord) { int x = int(fragcoord.x) % 4; int y = int(fragcoord.y) % 4; const vec3 luminance = vec3(0.2126, 0.7152, 0.0722); float calculated_brightness = (luminance.r * given_color.r) + (luminance.g * given_color.g) + (luminance.b * given_color.b); float thresholdMatrix[16] = float[16] ( 1.0 / 17.0, 9.0 / 17.0, 3.0 / 17.0, 11.0 / 17.0, 13.0 / 17.0, 5.0 / 17.0, 15.0 / 17.0, 7.0 / 17.0, 4.0 / 17.0, 12.0 / 17.0, 2.0 / 17.0, 10.0 / 17.0, 16.0 / 17.0, 8.0 / 17.0, 14.0 / 17.0, 6.0 / 17.0 ); float dithering = thresholdMatrix[x * 4 + y]; if ((calculated_brightness - 0.2 < dithering) && (vertex_distance < 60.)) { return ((dithering - 0.5) * 0.25) + 1.0; } else { return 1.; } } void fragment() { vec2 uv = UV / VERTEX.z; vec3 texture_rgb = (texture(albedo, uv).rgb * COLOR.rgb) * modulate.rgb; vec4 texture_rgba = vec4(texture_rgb.r, texture_rgb.g, texture_rgb.b, 1.0); texture_rgba = texture_rgba * get_dither_brightness(texture_rgba.rgb, FRAGCOORD); ALBEDO = texture_rgba.rgb; ALPHA = texture(albedo, uv).a * modulate.a; ALPHA_SCISSOR_THRESHOLD = 0.1; }cool