diff options
Diffstat (limited to 'source/blender/gpu/shaders/gpu_shader_material.glsl')
| -rw-r--r-- | source/blender/gpu/shaders/gpu_shader_material.glsl | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/source/blender/gpu/shaders/gpu_shader_material.glsl b/source/blender/gpu/shaders/gpu_shader_material.glsl index c095d803f48..2aee5b4846a 100644 --- a/source/blender/gpu/shaders/gpu_shader_material.glsl +++ b/source/blender/gpu/shaders/gpu_shader_material.glsl @@ -147,7 +147,7 @@ void geom(vec3 co, vec3 nor, mat4 viewinvmat, vec3 attorco, vec2 attuv, vec4 att normal = -normalize(nor); /* blender render normal is negated */ vcol_attribute(attvcol, vcol); vcol_alpha = attvcol.a; - frontback = 1.0; + frontback = (gl_FrontFacing)? 1.0: 0.0; } void mapping(vec3 vec, mat4 mat, vec3 minvec, vec3 maxvec, float domin, float domax, out vec3 outvec) @@ -2116,7 +2116,7 @@ void node_add_shader(vec4 shader1, vec4 shader2, out vec4 shader) void node_fresnel(float ior, vec3 N, vec3 I, out float result) { float eta = max(ior, 0.00001); - result = fresnel_dielectric(I, N, eta); //backfacing() ? 1.0/eta: eta); + result = fresnel_dielectric(I, N, (gl_FrontFacing)? eta: 1.0/eta); } /* geometry */ @@ -2139,7 +2139,7 @@ void node_geometry(vec3 I, vec3 N, mat4 toworld, true_normal = N; incoming = I; parametric = vec3(0.0); - backfacing = 0.0; + backfacing = (gl_FrontFacing)? 0.0: 1.0; } void node_tex_coord(vec3 I, vec3 N, mat4 viewinvmat, mat4 obinvmat, |