1 files changed, 0 insertions, 159 deletions
diff --git a/assets/shaders/pbr_textured.frag b/assets/shaders/pbr_textured.frag
deleted file mode 100644
index 0c801f8..0000000
--- a/assets/shaders/pbr_textured.frag
+++ /dev/null
@@ -1,159 +0,0 @@
-#version 410 core
-
-out vec4 FragColor;
-
-in vec3 fragWorldPos;
-in vec3 fragNormal;
-in vec2 fragTexCoords;
-
-in vec4 viewPos;
-
-struct PointLight {
-    vec4 position;
-    vec4 color;
-};
-
-// --- Uniforms
-
-// Lights data
-#define NUM_POINT_LIGHTS 4
-uniform Lights {
-    PointLight pointLights[NUM_POINT_LIGHTS];
-} scene;
-
-uniform PBR_Params {
-    vec3 albedo;
-    float metallic;
-    float roughness;
-    float ao;
-} params;
-
-// Material Textures
-uniform sampler2D albedoMap;
-uniform sampler2D metallicRoughnessMap;
-uniform sampler2D aoMap;
-uniform sampler2D normalMap;
-
-const float PI = 3.14;
-
-// Forward declarations
-vec3 fresnelSchlick(float cosTheta, vec3 F0);
-float DistributionGGX(vec3 N, vec3 H, float roughness);
-float GeometrySchlickGGX(float NdotV, float roughness);
-float GeometrySmith(vec3 N, vec3 V, vec3 L, float roughness);
-
-vec3 getNormalFromMap()
-{
-    vec3 tangentNormal = texture(normalMap, fragTexCoords).xyz * 2.0 - 1.0;
-
-    vec3 Q1 = dFdx(fragWorldPos);
-    vec3 Q2 = dFdy(fragWorldPos);
-    vec2 st1 = dFdx(fragTexCoords);
-    vec2 st2 = dFdy(fragTexCoords);
-
-    vec3 N = normalize(fragNormal);
-    vec3 T = normalize(Q1 * st2.t - Q2 * st1.t);
-    vec3 B = -normalize(cross(N, T));
-    mat3 TBN = mat3(T, B, N);
-
-    return normalize(TBN * tangentNormal);
-}
-
-void main() {
-    // vec3 albedo     = pow(texture(albedoMap, fragTexCoords).rgb, vec3(2.2));
-    vec3 albedo = params.albedo * texture(albedoMap, fragTexCoords).rgb;
-    float metallic = params.metallic * texture(metallicRoughnessMap, fragTexCoords).b;
-    float roughness = params.roughness * texture(metallicRoughnessMap, fragTexCoords).g;
-    float ao = texture(aoMap, fragTexCoords).r;
-
-    // vec3 norm = normalize(fragNormal); // N
-    vec3 norm = getNormalFromMap();
-    vec3 N = norm;
-    vec3 viewDir = normalize(vec3(viewPos) - fragWorldPos); // V
-    vec3 V = viewDir;
-
-    vec3 F0 = vec3(0.04);
-    F0 = mix(F0, albedo, metallic);
-
-    vec3 Lo = vec3(0.0);
-    for (int i = 0; i < 4; ++i) {
-        vec3 lightVec = normalize(vec3(scene.pointLights[i].position) - fragWorldPos); // L
-        vec3 L = lightVec;
-        vec3 halfway = normalize(viewDir + lightVec); // H
-        vec3 H = halfway;
-        float distance = length(vec3(scene.pointLights[i].position) - fragWorldPos);
-        float attenuation = 1.0 / (distance * distance);
-        vec3 radiance = vec3(scene.pointLights[i].color) * attenuation;
-
-        // cook-torrance brdf
-        float NDF = DistributionGGX(norm, halfway, roughness);
-        float G = GeometrySmith(norm, viewDir, lightVec, roughness);
-        // vec3 F    = fresnelSchlick(max(dot(halfway, viewDir), 0.0), F0);
-        vec3 F = fresnelSchlick(clamp(dot(H, V), 0.0, 1.0), F0);
-
-        vec3 numerator = NDF * G * F;
-        float denominator = 4.0 * max(dot(N, V), 0.0) * max(dot(N, L), 0.0) + 0.0001;
-        vec3 specular = numerator / denominator;
-
-        vec3 kS = F;
-
-        vec3 kD = vec3(1.0) - kS;
-        kD *= 1.0 - metallic;
-
-        // add to outgoing radiance Lo
-        float NdotL = max(dot(N, L), 0.0);
-        Lo += (kD * albedo / PI + specular) * radiance * NdotL;
-        // Lo += radiance;
-    }
-
-    vec3 ambient = vec3(0.03) * albedo * ao;
-    vec3 color = ambient + Lo; //ambient + Lo;
-
-    color = color / (color + vec3(1.0));
-    color = pow(color, vec3(1.0 / 2.2));
-
-    FragColor = vec4(color, 1.0);
-    FragColor = vec4(1.0);
-    // FragColor = vec4(scene.pointLights[0].position);
-    // FragColor = vec4(albedo, 1.0);
-    // FragColor = vec4(pbr.metallic, pbr.roughness, pbr.ao, 1.0);
-    // FragColor = vec4(fragTexCoords, 0.0, 1.0);
-}
-
-/* The below are from https://learnopengl.com/PBR/Lighting */
-
-vec3 fresnelSchlick(float cosTheta, vec3 F0) {
-    return F0 + (1.0 - F0) * pow(clamp(1.0 - cosTheta, 0.0, 1.0), 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;
-}