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mirror of synced 2024-12-12 07:41:11 +01:00
Switch-Toolbox/Toolbox/Shader/Bfres/BFRES_PBR.frag
KillzXGaming 233b11a022 Fix bugs related to bones.
Fixed bones not displaying when creating new skeletons.
Fixed importing dae bones not displaying properly in the tree.
Fixed bones not clearing when a model is removed
2019-03-24 11:24:40 -04:00

362 lines
9.4 KiB
GLSL

#version 330
in vec2 f_texcoord0;
in vec2 f_texcoord1;
in vec2 f_texcoord2;
in vec2 f_texcoord3;
in vec3 objectPosition;
in vec3 normal;
in vec4 vertexColor;
in vec3 tangent;
in vec3 bitangent;
in vec3 boneWeightsColored;
// Viewport Camera/Lighting
uniform mat4 mtxCam;
uniform mat4 mtxMdl;
uniform vec3 specLightDirection;
uniform vec3 difLightDirection;
uniform mat4 projMatrix;
uniform mat4 normalMatrix;
uniform mat4 modelViewMatrix;
uniform mat4 rotationMatrix;
uniform vec4 pickingColor;
uniform int useImageBasedLighting;
uniform int enableCellShading;
uniform vec3 camPos;
uniform vec3 light1Pos;
const float levels = 3.0;
// Viewport Settings
uniform int uvChannel;
uniform int renderType;
uniform int useNormalMap;
uniform vec4 colorSamplerUV;
uniform int renderVertColor;
uniform vec3 difLightColor;
uniform vec3 ambLightColor;
uniform int colorOverride;
uniform float DefaultMetalness;
uniform float DefaultRoughness;
// Channel Toggles
uniform int renderR;
uniform int renderG;
uniform int renderB;
uniform int renderAlpha;
// Texture Samplers
uniform sampler2D DiffuseMap;
uniform sampler2D BakeShadowMap;
uniform sampler2D NormalMap;
uniform sampler2D BakeLightMap;
uniform sampler2D UVTestPattern;
uniform sampler2D TransparencyMap;
uniform sampler2D EmissionMap;
uniform sampler2D SpecularMap;
uniform sampler2D DiffuseLayer;
uniform sampler2D MetalnessMap;
uniform sampler2D RoughnessMap;
uniform sampler2D MRA;
uniform sampler2D BOTWSpecularMap;
uniform sampler2D SphereMap;
uniform sampler2D SubSurfaceScatteringMap;
uniform samplerCube irradianceMap;
uniform samplerCube specularIbl;
uniform sampler2D brdfLUT;
// Shader Params
uniform float normal_map_weight;
uniform float ao_density;
uniform float emission_intensity;
uniform vec4 fresnelParams;
uniform vec4 base_color_mul_color;
uniform vec3 emission_color;
uniform vec3 specular_color;
// Shader Options
uniform float uking_texture2_texcoord;
uniform float bake_shadow_type;
uniform float enable_fresnel;
uniform float enable_emission;
uniform float cSpecularType;
// Shader Options
uniform float bake_light_type;
uniform float bake_calc_type;
// Texture Map Toggles
uniform int HasDiffuse;
uniform int HasNormalMap;
uniform int HasSpecularMap;
uniform int HasShadowMap;
uniform int HasAmbientOcclusionMap;
uniform int HasLightMap;
uniform int HasTransparencyMap;
uniform int HasEmissionMap;
uniform int HasDiffuseLayer;
uniform int HasMetalnessMap;
uniform int HasRoughnessMap;
uniform int HasMRA;
uniform int HasBOTWSpecularMap;
uniform int HasSubSurfaceScatteringMap;
uniform int roughnessAmount;
uniform int UseAOMap;
uniform int UseCavityMap;
uniform int UseMetalnessMap;
uniform int UseRoughnessMap;
int isTransparent;
struct VertexAttributes {
vec3 objectPosition;
vec2 texCoord;
vec2 texCoord2;
vec2 texCoord3;
vec4 vertexColor;
vec3 normal;
vec3 viewNormal;
vec3 tangent;
vec3 bitangent;
};
out vec4 fragColor;
#define gamma 2.2
const float PI = 3.14159265359;
struct BakedData
{
float shadowIntensity;
float aoIntensity;
vec3 indirectLighting;
};
// Defined in BFRES_Utility.frag.
BakedData ShadowMapBaked(sampler2D ShadowMap, sampler2D LightMap, vec2 texCoordBake0, vec2 texCoordBake1, int ShadowType, int LightType, int CalcType, vec3 NormalMap);
vec3 CalcBumpedNormal(vec3 normal, sampler2D normalMap, VertexAttributes vert, float texCoordIndex);
//float AmbientOcclusionBlend(sampler2D BakeShadowMap, VertexAttributes vert, float ao_density);
vec3 EmissionPass(sampler2D EmissionMap, float emission_intensity, VertexAttributes vert, float texCoordIndex, vec3 emission_color);
// Shader code adapted from learnopengl.com's PBR tutorial:
// https://learnopengl.com/PBR/Theory
vec3 FresnelSchlick(float cosTheta, vec3 F0)
{
return F0 + (1.0 - F0) * pow(1.0 - cosTheta, 5.0);
}
vec3 FresnelSchlickRoughness(float cosTheta, vec3 F0, float roughness)
{
return F0 + (max(vec3(1.0 - roughness), F0) - F0) * pow(1.0 - cosTheta, 5.0);
}
float DistributionGGX(vec3 N, vec3 H, float roughness)
{
float a = roughness*roughness;
float a2 = a*a;
float NdotH = max(dot(N, H), 0.0);
float NdotH2 = NdotH*NdotH;
float num = a2;
float denom = (NdotH2 * (a2 - 1.0) + 1.0);
denom = PI * denom * denom;
return num / denom;
}
float GeometrySchlickGGX(float NdotV, float roughness)
{
float r = (roughness + 1.0);
float k = (r*r) / 8.0;
float num = NdotV;
float denom = NdotV * (1.0 - k) + k;
return num / denom;
}
float GeometrySmith(vec3 N, vec3 V, vec3 L, float roughness)
{
float NdotV = max(dot(N, V), 0.0);
float NdotL = max(dot(N, L), 0.0);
float ggx2 = GeometrySchlickGGX(NdotV, roughness);
float ggx1 = GeometrySchlickGGX(NdotL, roughness);
return ggx1 * ggx2;
}
vec3 saturation(vec3 rgb, float adjustment)
{
const vec3 W = vec3(0.2125, 0.7154, 0.0721);
vec3 intensity = vec3(dot(rgb, W));
return mix(intensity, rgb, adjustment);
}
void main()
{
fragColor = vec4(1);
// Create a struct for passing all the vertex attributes to other functions.
VertexAttributes vert;
vert.objectPosition = objectPosition;
vert.texCoord = f_texcoord0;
vert.texCoord2 = f_texcoord1;
vert.texCoord3 = f_texcoord2;
vert.vertexColor = vertexColor;
vert.normal = normal;
vert.tangent = tangent;
vert.bitangent = bitangent;
vec3 lightColor = vec3(10);
// Wireframe color.
if (colorOverride == 1)
{
fragColor = vec4(1);
return;
}
vec3 albedo = vec3(1);
if (HasDiffuse == 1)
albedo = pow(texture(DiffuseMap , f_texcoord0).rgb, vec3(gamma));
float metallic = 0;
if (HasMetalnessMap == 1)
metallic = texture(MetalnessMap, f_texcoord0).r;
float roughness = 0.5;
if (HasRoughnessMap == 1)
roughness = texture(RoughnessMap, f_texcoord0).r;
float ao = 1;
if (HasShadowMap == 1 && bake_shadow_type == 0 || UseAOMap == 1)
ao = texture(BakeShadowMap, f_texcoord1).r;
float shadow = 1;
if (HasShadowMap == 1 && bake_shadow_type == 1)
shadow = texture(BakeShadowMap, f_texcoord1).g;
float cavity = 1;
vec3 emissionTerm = vec3(0);
if (HasEmissionMap == 1 || enable_emission == 1) //Can be without texture map
emissionTerm.rgb += EmissionPass(EmissionMap, emission_intensity, vert, 0, emission_color);
vec3 lightMapColor = vec3(1);
float lightMapIntensity = 0;
if (HasLightMap == 1)
{
lightMapColor = texture(BakeLightMap, f_texcoord1).rgb;
lightMapIntensity = texture(BakeLightMap, f_texcoord1).a;
}
float specIntensity = 1;
if (HasMRA == 1) //Kirby Star Allies PBR map
{
//Note KSA has no way to tell if one gets unused or not because shaders :(
//Usually it's just metalness with roughness and works fine
metallic = texture(MRA, f_texcoord0).r;
roughness = texture(MRA, f_texcoord0).g;
specIntensity = texture(MRA, f_texcoord0).b;
ao = texture(MRA, f_texcoord0).a;
}
// Calculate shading vectors.
vec3 I = vec3(0,0,-1) * mat3(mtxMdl * mtxCam);
vec3 N = normal;
if (HasNormalMap == 1 && useNormalMap == 1)
N = CalcBumpedNormal(normal, NormalMap, vert, 0);
vec3 V = normalize(I); // view
vec3 L = normalize(specLightDirection); // Light
vec3 H = normalize(specLightDirection + I); // half angle
vec3 R = reflect(I, N); // reflection
vec3 f0 = mix(vec3(0.04), albedo, metallic); // dialectric
vec3 kS = FresnelSchlickRoughness(max(dot(N, V), 0.0), f0, roughness);
vec3 kD = 1.0 - kS;
kD *= 1.0 - metallic;
BakedData ShadowBake = ShadowMapBaked(BakeShadowMap,BakeLightMap, f_texcoord1, f_texcoord2, int(bake_shadow_type),int(bake_light_type), int(bake_calc_type), N );
vec3 LightingDiffuse = vec3(0);
if (HasLightMap == 1)
{
vec3 LightIntensity = vec3(0.1);
LightingDiffuse += ShadowBake.indirectLighting.rgb * LightIntensity;
}
// Diffuse pass
vec3 diffuseIblColor = texture(irradianceMap, N).rgb;
vec3 diffuseTerm = diffuseIblColor * albedo;
diffuseTerm *= kD;
diffuseTerm *= cavity;
diffuseTerm *= ao;
diffuseTerm *= shadow;
diffuseTerm += LightingDiffuse;
// Adjust for metalness.
// diffuseTerm *= clamp(1 - metallic, 0, 1);
// diffuseTerm *= vec3(1) - kS.xxx;
// Specular pass.
int maxSpecularLod = 8;
vec3 specularIblColor = textureLod(specularIbl, R, roughness * maxSpecularLod).rgb;
vec2 envBRDF = texture(brdfLUT, vec2(max(dot(N, V), 0.0), roughness)).rg;
vec3 brdfTerm = (kS * envBRDF.x + envBRDF.y);
vec3 specularTerm = specularIblColor * brdfTerm * specIntensity * 0.7f;
// Add render passes.
fragColor.rgb = vec3(0);
fragColor.rgb += diffuseTerm;
fragColor.rgb += specularTerm;
fragColor.rgb += emissionTerm;
// Global brightness adjustment.
fragColor.rgb *= 2.5;
fragColor *= min(pickingColor, vec4(1));
fragColor.rgb *= min(boneWeightsColored, vec3(1));
// Convert back to sRGB.
fragColor.rgb = pow(fragColor.rgb, vec3(1 / gamma));
// Alpha calculations.
float alpha = texture(DiffuseMap, f_texcoord0).a;
fragColor.a = alpha;
// Toggles rendering of individual color channels for all render modes.
fragColor.rgb *= vec3(renderR, renderG, renderB);
if (renderR == 1 && renderG == 0 && renderB == 0)
fragColor.rgb = fragColor.rrr;
else if (renderG == 1 && renderR == 0 && renderB == 0)
fragColor.rgb = fragColor.ggg;
else if (renderB == 1 && renderR == 0 && renderG == 0)
fragColor.rgb = fragColor.bbb;
}