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Fix #35246: cycles has no simple way to combine bump and normal mapping. Now

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the Bump node has a Normal input, so you can chain it after a Normal Map node.
Note that normal mapping always has to be done first because it is tied to the
particular mesh surface and tangents.
This commit is contained in:
Brecht Van Lommel
2013-05-08 13:23:13 +00:00
parent 28617bd710
commit 3e763d7e4d
4 changed files with 8 additions and 7 deletions
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4
intern/cycles/kernel/shaders/node_bump.osl
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@@ -27,7 +27,7 @@ surface node_bump(
float SampleCenter = 0.0,
float SampleX = 0.0,
float SampleY = 0.0,
output normal Normal = N)
output normal NormalOut = N)
{
/* get surface tangents from normal */
vector dPdx = Dx(P);
@@ -44,6 +44,6 @@ surface node_bump(
float absdet = fabs(det);
/* compute and output perturbed normal */
Normal = normalize(absdet * NormalIn - sign(det) * surfgrad);
NormalOut = normalize(absdet * NormalIn - sign(det) * surfgrad);
}

2
intern/cycles/render/graph.cpp
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@@ -668,7 +668,7 @@ void ShaderGraph::bump_from_displacement()
/* for displacement bump, clear the normal input in case the above loop
* connected the setnormal out to the bump normalin */
ShaderInput *bump_normal_in = bump->input("NormalIn");
ShaderInput *bump_normal_in = bump->input("Normal");
if(bump_normal_in)
bump_normal_in->link = NULL;

4
intern/cycles/render/nodes.cpp
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@@ -3054,7 +3054,7 @@ BumpNode::BumpNode()
add_input("SampleCenter", SHADER_SOCKET_FLOAT);
add_input("SampleX", SHADER_SOCKET_FLOAT);
add_input("SampleY", SHADER_SOCKET_FLOAT);
add_input("NormalIn", SHADER_SOCKET_NORMAL, ShaderInput::NORMAL);
add_input("Normal", SHADER_SOCKET_NORMAL, ShaderInput::NORMAL);
add_input("Strength", SHADER_SOCKET_FLOAT, 0.1f);
add_output("Normal", SHADER_SOCKET_NORMAL);
@@ -3065,7 +3065,7 @@ void BumpNode::compile(SVMCompiler& compiler)
ShaderInput *center_in = input("SampleCenter");
ShaderInput *dx_in = input("SampleX");
ShaderInput *dy_in = input("SampleY");
ShaderInput *normal_in = input("NormalIn");
ShaderInput *normal_in = input("Normal");
ShaderInput *intensity_in = input("Strength");
ShaderOutput *normal_out = output("Normal");

5
source/blender/nodes/shader/nodes/node_shader_bump.c
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@@ -36,8 +36,9 @@
/* **************** BUMP ******************** */
static bNodeSocketTemplate sh_node_bump_in[] = {
{ SOCK_FLOAT, 1, "Strength", 0.1f, 0.0f, 0.0f, 0.0f, 0.0f, 10.0f},
{ SOCK_FLOAT, 1, "Height", 1.0f, 1.0f, 1.0f, 1.0f, -1000.0f, 1000.0f, PROP_NONE, SOCK_HIDE_VALUE},
{ SOCK_FLOAT, 1, N_("Strength"), 0.1f, 0.0f, 0.0f, 0.0f, 0.0f, 10.0f},
{ SOCK_FLOAT, 1, N_("Height"), 1.0f, 1.0f, 1.0f, 1.0f, -1000.0f, 1000.0f, PROP_NONE, SOCK_HIDE_VALUE},
{ SOCK_VECTOR, 1, N_("Normal"), 0.0f, 0.0f, 0.0f, 1.0f, -1.0f, 1.0f, PROP_NONE, SOCK_HIDE_VALUE},
{ -1, 0, "" }
};