1 files changed, 0 insertions, 59 deletions
diff --git a/source/blender/draw/engines/eevee/shaders/bsdf_lut_frag.glsl b/source/blender/draw/engines/eevee/shaders/bsdf_lut_frag.glsl
deleted file mode 100644
index 4c1544654c1..00000000000
--- a/source/blender/draw/engines/eevee/shaders/bsdf_lut_frag.glsl
+++ /dev/null
@@ -1,59 +0,0 @@
-#pragma BLENDER_REQUIRE(common_utiltex_lib.glsl)
-#pragma BLENDER_REQUIRE(bsdf_sampling_lib.glsl)
-
-uniform float sampleCount;
-
-out vec2 FragColor;
-
-void main()
-{
-  /* Make sure coordinates are covering the whole [0..1] range at texel center. */
-  float y = floor(gl_FragCoord.y) / (LUT_SIZE - 1);
-  float x = floor(gl_FragCoord.x) / (LUT_SIZE - 1);
-
-  float NV = clamp(1.0 - y * y, 1e-4, 0.9999);
-  float a = x * x;
-  float a2 = clamp(a * a, 1e-4, 0.9999);
-
-  vec3 V = vec3(sqrt(1.0 - NV * NV), 0.0, NV);
-
-  /* Integrating BRDF */
-  float brdf_accum = 0.0;
-  float fresnel_accum = 0.0;
-  for (float j = 0.0; j < sampleCount; j++) {
-    for (float i = 0.0; i < sampleCount; i++) {
-      vec3 Xi = (vec3(i, j, 0.0) + 0.5) / sampleCount;
-      Xi.yz = vec2(cos(Xi.y * M_2PI), sin(Xi.y * M_2PI));
-
-      /* Microfacet normal */
-      vec3 H = sample_ggx(Xi, a, V);
-      vec3 L = -reflect(V, H);
-      float NL = L.z;
-
-      if (NL > 0.0) {
-        float NH = max(H.z, 0.0);
-        float VH = max(dot(V, H), 0.0);
-
-        float G1_v = G1_Smith_GGX_opti(NV, a2);
-        float G1_l = G1_Smith_GGX_opti(NL, a2);
-        /* See G1_Smith_GGX_opti for explanations. */
-        float G_smith = 4.0 * NV * NL / (G1_v * G1_l);
-
-        float brdf = (G_smith * VH) / (NH * NV);
-
-        /* Follow maximum specular value for principled bsdf. */
-        const float specular = 1.0;
-        const float eta = (2.0 / (1.0 - sqrt(0.08 * specular))) - 1.0;
-        float fresnel = F_eta(eta, VH);
-        float Fc = F_color_blend(eta, fresnel, vec3(0)).r;
-
-        brdf_accum += (1.0 - Fc) * brdf;
-        fresnel_accum += Fc * brdf;
-      }
-    }
-  }
-  brdf_accum /= sampleCount * sampleCount;
-  fresnel_accum /= sampleCount * sampleCount;
-
-  FragColor = vec2(brdf_accum, fresnel_accum);
-}