diff options
Diffstat (limited to 'source/blender/gpu/shaders/material/gpu_shader_material_layer_weight.glsl')
-rw-r--r-- | source/blender/gpu/shaders/material/gpu_shader_material_layer_weight.glsl | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/source/blender/gpu/shaders/material/gpu_shader_material_layer_weight.glsl b/source/blender/gpu/shaders/material/gpu_shader_material_layer_weight.glsl index 588d295bcc4..2b61343a200 100644 --- a/source/blender/gpu/shaders/material/gpu_shader_material_layer_weight.glsl +++ b/source/blender/gpu/shaders/material/gpu_shader_material_layer_weight.glsl @@ -1,15 +1,17 @@ -void node_layer_weight(float blend, vec3 N, vec3 I, out float fresnel, out float facing) +#pragma BLENDER_REQUIRE(gpu_shader_material_fresnel.glsl) + +void node_layer_weight(float blend, vec3 N, out float fresnel, out float facing) { N = normalize(N); /* fresnel */ float eta = max(1.0 - blend, 0.00001); - vec3 I_view = (ProjectionMatrix[3][3] == 0.0) ? normalize(I) : vec3(0.0, 0.0, -1.0); + vec3 V = cameraVec(g_data.P); - fresnel = fresnel_dielectric(I_view, N, (gl_FrontFacing) ? 1.0 / eta : eta); + fresnel = fresnel_dielectric(V, N, (FrontFacing) ? 1.0 / eta : eta); /* facing */ - facing = abs(dot(I_view, N)); + facing = abs(dot(V, N)); if (blend != 0.5) { blend = clamp(blend, 0.0, 0.99999); blend = (blend < 0.5) ? 2.0 * blend : 0.5 / (1.0 - blend); |