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Geometry Nodes: Add Shader Curve Nodes

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Convert curve vec and curve rgb shader nodes to geometry nodes, based on node_shader_valToRgb.cc implementation.
This commit is contained in:
Charlie Jolly
2021-05-24 12:14:06 +01:00
parent 54ae7baa4c
commit 8cd506639a
3 changed files with 101 additions and 3 deletions
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100
source/blender/nodes/shader/nodes/node_shader_curves.cc
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@@ -104,17 +104,65 @@ static int gpu_shader_curve_vec(GPUMaterial *mat,
GPU_uniform(ext_xyz[2]));
}
class CurveVecFunction : public blender::fn::MultiFunction {
private:
const CurveMapping &cumap_;
public:
CurveVecFunction(const CurveMapping &cumap) : cumap_(cumap)
{
static blender::fn::MFSignature signature = create_signature();
this->set_signature(&signature);
}
static blender::fn::MFSignature create_signature()
{
blender::fn::MFSignatureBuilder signature{"Curve Vec"};
signature.single_input<float>("Fac");
signature.single_input<blender::float3>("Vector");
signature.single_output<blender::float3>("Vector");
return signature.build();
}
void call(blender::IndexMask mask,
blender::fn::MFParams params,
blender::fn::MFContext UNUSED(context)) const override
{
const blender::VArray<float> &fac = params.readonly_single_input<float>(0, "Fac");
const blender::VArray<blender::float3> &vec_in = params.readonly_single_input<blender::float3>(
1, "Vector");
blender::MutableSpan<blender::float3> vec_out =
params.uninitialized_single_output<blender::float3>(2, "Vector");
for (int64_t i : mask) {
BKE_curvemapping_evaluate3F(&cumap_, vec_out[i], vec_in[i]);
if (fac[i] != 1.0f) {
interp_v3_v3v3(vec_out[i], vec_in[i], vec_out[i], fac[i]);
}
}
}
};
static void sh_node_curve_vec_expand_in_mf_network(blender::nodes::NodeMFNetworkBuilder &builder)
{
bNode &bnode = builder.bnode();
CurveMapping *cumap = (CurveMapping *)bnode.storage;
BKE_curvemapping_init(cumap);
builder.construct_and_set_matching_fn<CurveVecFunction>(*cumap);
}
void register_node_type_sh_curve_vec(void)
{
static bNodeType ntype;
sh_node_type_base(&ntype, SH_NODE_CURVE_VEC, "Vector Curves", NODE_CLASS_OP_VECTOR, 0);
sh_fn_node_type_base(&ntype, SH_NODE_CURVE_VEC, "Vector Curves", NODE_CLASS_OP_VECTOR, 0);
node_type_socket_templates(&ntype, sh_node_curve_vec_in, sh_node_curve_vec_out);
node_type_init(&ntype, node_shader_init_curve_vec);
node_type_size_preset(&ntype, NODE_SIZE_LARGE);
node_type_storage(&ntype, "CurveMapping", node_free_curves, node_copy_curves);
node_type_exec(&ntype, node_initexec_curves, nullptr, node_shader_exec_curve_vec);
node_type_gpu(&ntype, gpu_shader_curve_vec);
ntype.expand_in_mf_network = sh_node_curve_vec_expand_in_mf_network;
nodeRegisterType(&ntype);
}
@@ -230,17 +278,65 @@ static int gpu_shader_curve_rgb(GPUMaterial *mat,
GPU_uniform(ext_rgba[3]));
}
class CurveRGBFunction : public blender::fn::MultiFunction {
private:
const CurveMapping &cumap_;
public:
CurveRGBFunction(const CurveMapping &cumap) : cumap_(cumap)
{
static blender::fn::MFSignature signature = create_signature();
this->set_signature(&signature);
}
static blender::fn::MFSignature create_signature()
{
blender::fn::MFSignatureBuilder signature{"Curve RGB"};
signature.single_input<float>("Fac");
signature.single_input<blender::Color4f>("Color");
signature.single_output<blender::Color4f>("Color");
return signature.build();
}
void call(blender::IndexMask mask,
blender::fn::MFParams params,
blender::fn::MFContext UNUSED(context)) const override
{
const blender::VArray<float> &fac = params.readonly_single_input<float>(0, "Fac");
const blender::VArray<blender::Color4f> &col_in =
params.readonly_single_input<blender::Color4f>(1, "Color");
blender::MutableSpan<blender::Color4f> col_out =
params.uninitialized_single_output<blender::Color4f>(2, "Color");
for (int64_t i : mask) {
BKE_curvemapping_evaluateRGBF(&cumap_, col_out[i], col_in[i]);
if (fac[i] != 1.0f) {
interp_v3_v3v3(col_out[i], col_in[i], col_out[i], fac[i]);
}
}
}
};
static void sh_node_curve_rgb_expand_in_mf_network(blender::nodes::NodeMFNetworkBuilder &builder)
{
bNode &bnode = builder.bnode();
CurveMapping *cumap = (CurveMapping *)bnode.storage;
BKE_curvemapping_init(cumap);
builder.construct_and_set_matching_fn<CurveRGBFunction>(*cumap);
}
void register_node_type_sh_curve_rgb(void)
{
static bNodeType ntype;
sh_node_type_base(&ntype, SH_NODE_CURVE_RGB, "RGB Curves", NODE_CLASS_OP_COLOR, 0);
sh_fn_node_type_base(&ntype, SH_NODE_CURVE_RGB, "RGB Curves", NODE_CLASS_OP_COLOR, 0);
node_type_socket_templates(&ntype, sh_node_curve_rgb_in, sh_node_curve_rgb_out);
node_type_init(&ntype, node_shader_init_curve_rgb);
node_type_size_preset(&ntype, NODE_SIZE_LARGE);
node_type_storage(&ntype, "CurveMapping", node_free_curves, node_copy_curves);
node_type_exec(&ntype, node_initexec_curves, nullptr, node_shader_exec_curve_rgb);
node_type_gpu(&ntype, gpu_shader_curve_rgb);
ntype.expand_in_mf_network = sh_node_curve_rgb_expand_in_mf_network;
nodeRegisterType(&ntype);
}