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Cycles: Anisotropic BSDF enabled, with tangents now computed from the active UV map.

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It's using the Ward BSDF currently, which has some energy loss so might be a bit
dark. More/better BSDF options can be implemented later.

Patch by Mike Farnsworth, some modifications by me. Currently it's not possible yet
to set a custom tangent, that will follow as part of per-bsdf normals patch.
This commit is contained in:
Brecht Van Lommel
2012-10-10 13:02:20 +00:00
parent b4671d67ed
commit f0a9b66469
21 changed files with 198 additions and 18 deletions
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31
intern/cycles/render/nodes.cpp
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@@ -1221,12 +1221,35 @@ WardBsdfNode::WardBsdfNode()
{
closure = CLOSURE_BSDF_WARD_ID;
add_input("Tangent", SHADER_SOCKET_VECTOR, ShaderInput::TANGENT);
add_input("Roughness U", SHADER_SOCKET_FLOAT, 0.2f);
add_input("Roughness V", SHADER_SOCKET_FLOAT, 0.2f);
}
void WardBsdfNode::attributes(AttributeRequestSet *attributes)
{
ShaderInput *tangent_in = input("Tangent");
if(!tangent_in->link)
attributes->add(ATTR_STD_TANGENT);
ShaderNode::attributes(attributes);
}
void WardBsdfNode::compile(SVMCompiler& compiler)
{
ShaderInput *tangent_in = input("Tangent");
if(tangent_in->link) {
int attr = compiler.attribute(ATTR_STD_TANGENT);
compiler.stack_assign(tangent_in);
compiler.add_node(NODE_ATTR, attr, tangent_in->stack_offset, NODE_ATTR_FLOAT3);
compiler.add_node(NODE_CLOSURE_TANGENT, tangent_in->stack_offset);
}
else
compiler.add_node(NODE_CLOSURE_SET_TANGENT, tangent_in->value);
BsdfNode::compile(compiler, input("Roughness U"), input("Roughness V"));
}
@@ -1566,6 +1589,14 @@ GeometryNode::GeometryNode()
add_output("Backfacing", SHADER_SOCKET_FLOAT);
}
void GeometryNode::attributes(AttributeRequestSet *attributes)
{
if(!output("Tangent")->links.empty())
attributes->add(ATTR_STD_TANGENT);
ShaderNode::attributes(attributes);
}
void GeometryNode::compile(SVMCompiler& compiler)
{
ShaderOutput *out;