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feat: Convert fresnel_crystal.gdshader to Godot 4.3 (#58)
* Convert fresnel_crystal.gdshader * chore: minor refactor and proofreading --------- Co-authored-by: Nathan Lovato <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,58 +1,63 @@ | ||
| // ANCHOR: all | ||
| // ANCHOR: setup | ||
| shader_type spatial; | ||
|
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| uniform float metallic; | ||
| uniform float roughness : hint_range(0,1); | ||
| group_uniforms BasicPBRValues; | ||
| /** Metallic amount. Controls how metallic the material looks. */ | ||
| uniform float metallic: hint_range(0.0,1.0) = 1.0; | ||
| /** Roughness amount. The lower the roughness, the shinier the material. As you increase the roughness, the specular highlights scatter. */ | ||
| uniform float roughness : hint_range(0.0,1.0) = 0.1; | ||
| /** Albedo texture. Base color. */ | ||
| uniform sampler2D texture_albedo : source_color, repeat_enable, filter_linear_mipmap; | ||
| /** Normal texture. */ | ||
| uniform sampler2D texture_normal : hint_normal, repeat_enable, filter_linear_mipmap; | ||
| group_uniforms; | ||
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| uniform sampler2D texture_albedo : source_color; | ||
| uniform sampler2D texture_normal : hint_normal; | ||
| // END: setup | ||
| // ANCHOR: emission_setup | ||
| uniform sampler2D texture_emission : hint_default_black; | ||
| uniform vec4 emission : source_color; | ||
| group_uniforms Emission; | ||
| /** Color of light emission. This light is emitted from the core of the crystal. */ | ||
| uniform vec4 emission : source_color = vec4(1.0, 0.6, 0.1, 1.0); // Light orange. | ||
| /** Energy of emission. | ||
| * Values over [code]1.0[/code] will glow, if you have Glow enabled in your environment resource. | ||
| */ | ||
| uniform float emission_energy: hint_range(0.0, 10.0) = 6.0; | ||
| /** Emission texture. Controls the strength of the effect across the mesh. */ | ||
| uniform sampler2D texture_emission : hint_default_black, repeat_enable, filter_linear_mipmap; | ||
| /** Speed of the pulsing emission effect. Higher values mean pulsing more often. | ||
| * If this matches the fresnel pulse speed, the effects will sync. | ||
| */ | ||
| uniform float emission_pulse_speed: hint_range(0.0, 2.0) = .75; | ||
| group_uniforms; | ||
|
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| uniform float emission_energy; | ||
| // END: emission_setup | ||
| uniform float fresnel_power = 3.0; | ||
| // ANCHOR: fresnel_setup | ||
| uniform float fresnel_color_intensity = 1.0; | ||
| uniform vec4 fresnel_color : source_color; | ||
| group_uniforms Fresnel; | ||
| /** Color of fresnel effect. */ | ||
| uniform vec4 fresnel_color : source_color = vec4(0.0, 0.9, 0.9, 1.0); // Near cyan. | ||
| /** Fresnel intensity. | ||
| * Values over [code]1.0[/code] will glow, if you have Glow enabled in your environment resource. | ||
| */ | ||
| uniform float fresnel_color_intensity: hint_range(0.0, 10.0) = 1.0; | ||
| /** The power of the fresnel effect. | ||
| * High values mean the effect only appears on the very edges, at glancing angles. | ||
| */ | ||
| uniform float fresnel_power: hint_range(0.5,8.0) = 6.0; | ||
| /** Speed of the pulsing fresnel effect. Higher values mean pulsing more often. | ||
| * If this matches the emission pulse speed, the effects will sync. | ||
| */ | ||
| uniform float fresnel_pulse_speed: hint_range(0.0,2.0) = 0.75; | ||
| group_uniforms; | ||
|
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| uniform float fresnel_pulse_speed = 1.0; | ||
| // END: fresnel_setup | ||
| // ANCHOR: speed | ||
| uniform float emission_pulse_speed = 1.0; | ||
| // END: speed | ||
| // ANCHOR: setup_fragment | ||
| void fragment() { | ||
| // Set the PBR values from textures and sliders. | ||
| ALBEDO = texture(texture_albedo, UV).rgb; | ||
|
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| NORMAL_MAP = texture(texture_normal, UV).rgb; | ||
| METALLIC = metallic; | ||
| ROUGHNESS = roughness; | ||
|
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| NORMAL_MAP = texture(texture_normal, UV).rgb; | ||
| // END: setup_fragment | ||
| // ANCHOR: emission_tex | ||
| vec3 emission_tex = texture(texture_emission, UV).rgb; | ||
| // END: emission_tex | ||
| // ANCHOR: fresnel | ||
|
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| // Emission. | ||
| vec3 emission_texture = texture(texture_emission, UV).rgb; | ||
| float emission_time_factor = clamp(sin(TIME * emission_pulse_speed) + 0.33, 0.33, 1); | ||
| EMISSION = ((emission.rgb * emission_texture) * emission_energy * emission_time_factor); | ||
|
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| float fresnel = 1.0 - dot(NORMAL, VIEW); | ||
| // END: fresnel | ||
| // ANCHOR: fresnel_power | ||
| // Raise the fresnel to a power to control the thickness of the edge effect. | ||
| fresnel = pow(fresnel, fresnel_power); | ||
| // END: fresnel_power | ||
| // ANCHOR: fresnel_time | ||
| float fresnel_time_factor = clamp(sin(TIME * fresnel_pulse_speed), 0.15, 1); | ||
| // END: fresnel_time | ||
| // ANCHOR: time_factor | ||
| float emission_time_factor = clamp(sin(TIME * emission_pulse_speed) + 0.33, 0.33, 1); | ||
| // END: time_factor | ||
| // ANCHOR: emission_time | ||
| EMISSION = ((emission.rgb * emission_tex) * emission_energy * emission_time_factor); | ||
| // END: emission_time | ||
| // ANCHOR: emission_fresnel | ||
| EMISSION += (fresnel * fresnel_color.rgb * fresnel_color_intensity * fresnel_time_factor); | ||
| // END: emission_fresnel | ||
| } | ||
| // END: all |