Geometry Nodes: Initial socket visualization for fields.

This implements the update logic for the vizualization of which
sockets pass data or constants directly, and which pass functions.
The socket shapes may still have to be updated. That should be
done separately, because it might be a bit more involved, because
socket shapes are currently linked to keyframe shapes. Currently
the circle and diamond shapes are used with the following meanings:

 - Input Sockets:
    - Circle: Required to be a single value.
    - Diamond: This input supports fields.
 - Output Sockets:
    - Circle: This output is a single value.
    - Diamond: This output may be a field.

Connecting a field to a circle input socket is an error, since a
field cannot be converted to a single value. If the socket shape
is a diamond with a dot in the middle, it means it is currently
a single value, but could be a field.

In addition to socket shapes, the intention is to draw node links
differently based on the field status. However, the exact method for
conveying that isn't decided yet.

Differential Revision: https://developer.blender.org/D12584

9 files changed, 9 insertions, 0 deletions

diff --git a/source/blender/nodes/function/nodes/node_fn_boolean_math.cc b/source/blender/nodes/function/nodes/node_fn_boolean_math.cc
index b71ee092de6..d10490bb2ee 100644
--- a/source/blender/nodes/function/nodes/node_fn_boolean_math.cc
+++ b/source/blender/nodes/function/nodes/node_fn_boolean_math.cc
@@ -28,6 +28,7 @@ namespace blender::nodes {
 
 static void fn_node_boolean_math_declare(NodeDeclarationBuilder &b)
 {
+  b.is_function_node();
   b.add_input<decl::Bool>("Boolean", "Boolean");
   b.add_input<decl::Bool>("Boolean", "Boolean_001");
   b.add_output<decl::Bool>("Boolean");
diff --git a/source/blender/nodes/function/nodes/node_fn_float_compare.cc b/source/blender/nodes/function/nodes/node_fn_float_compare.cc
index 4f4830afabc..9736c52e895 100644
--- a/source/blender/nodes/function/nodes/node_fn_float_compare.cc
+++ b/source/blender/nodes/function/nodes/node_fn_float_compare.cc
@@ -30,6 +30,7 @@ namespace blender::nodes {
 
 static void fn_node_float_compare_declare(NodeDeclarationBuilder &b)
 {
+  b.is_function_node();
   b.add_input<decl::Float>("A").min(-10000.0f).max(10000.0f);
   b.add_input<decl::Float>("B").min(-10000.0f).max(10000.0f);
   b.add_input<decl::Float>("Epsilon").default_value(0.001f).min(-10000.0f).max(10000.0f);
diff --git a/source/blender/nodes/function/nodes/node_fn_float_to_int.cc b/source/blender/nodes/function/nodes/node_fn_float_to_int.cc
index e59c78d2c04..8bb5dafff8a 100644
--- a/source/blender/nodes/function/nodes/node_fn_float_to_int.cc
+++ b/source/blender/nodes/function/nodes/node_fn_float_to_int.cc
@@ -29,6 +29,7 @@ namespace blender::nodes {
 
 static void fn_node_float_to_int_declare(NodeDeclarationBuilder &b)
 {
+  b.is_function_node();
   b.add_input<decl::Float>("Float");
   b.add_output<decl::Int>("Integer");
 };
diff --git a/source/blender/nodes/function/nodes/node_fn_input_string.cc b/source/blender/nodes/function/nodes/node_fn_input_string.cc
index 4a8e898fb9b..704ae9d900c 100644
--- a/source/blender/nodes/function/nodes/node_fn_input_string.cc
+++ b/source/blender/nodes/function/nodes/node_fn_input_string.cc
@@ -23,6 +23,7 @@ namespace blender::nodes {
 
 static void fn_node_input_string_declare(NodeDeclarationBuilder &b)
 {
+  b.is_function_node();
   b.add_output<decl::String>("String");
 };
 
diff --git a/source/blender/nodes/function/nodes/node_fn_input_vector.cc b/source/blender/nodes/function/nodes/node_fn_input_vector.cc
index 9548df7b423..387689b3d1e 100644
--- a/source/blender/nodes/function/nodes/node_fn_input_vector.cc
+++ b/source/blender/nodes/function/nodes/node_fn_input_vector.cc
@@ -25,6 +25,7 @@ namespace blender::nodes {
 
 static void fn_node_input_vector_declare(NodeDeclarationBuilder &b)
 {
+  b.is_function_node();
   b.add_output<decl::Vector>("Vector");
 };
 
diff --git a/source/blender/nodes/function/nodes/node_fn_random_float.cc b/source/blender/nodes/function/nodes/node_fn_random_float.cc
index 1bd39aacdca..20f5fa87685 100644
--- a/source/blender/nodes/function/nodes/node_fn_random_float.cc
+++ b/source/blender/nodes/function/nodes/node_fn_random_float.cc
@@ -22,6 +22,7 @@ namespace blender::nodes {
 
 static void fn_node_random_float_declare(NodeDeclarationBuilder &b)
 {
+  b.is_function_node();
   b.add_input<decl::Float>("Min").min(-10000.0f).max(10000.0f);
   b.add_input<decl::Float>("Max").default_value(1.0f).min(-10000.0f).max(10000.0f);
   b.add_input<decl::Int>("Seed").min(-10000).max(10000);
diff --git a/source/blender/nodes/function/nodes/node_fn_string_length.cc b/source/blender/nodes/function/nodes/node_fn_string_length.cc
index a0f85dfd2bf..89038629c3c 100644
--- a/source/blender/nodes/function/nodes/node_fn_string_length.cc
+++ b/source/blender/nodes/function/nodes/node_fn_string_length.cc
@@ -24,6 +24,7 @@ namespace blender::nodes {
 
 static void fn_node_string_length_declare(NodeDeclarationBuilder &b)
 {
+  b.is_function_node();
   b.add_input<decl::String>("String");
   b.add_output<decl::Int>("Length");
 };
diff --git a/source/blender/nodes/function/nodes/node_fn_string_substring.cc b/source/blender/nodes/function/nodes/node_fn_string_substring.cc
index 55a01093ae9..b91171923d6 100644
--- a/source/blender/nodes/function/nodes/node_fn_string_substring.cc
+++ b/source/blender/nodes/function/nodes/node_fn_string_substring.cc
@@ -22,6 +22,7 @@ namespace blender::nodes {
 
 static void fn_node_string_substring_declare(NodeDeclarationBuilder &b)
 {
+  b.is_function_node();
   b.add_input<decl::String>("String");
   b.add_input<decl::Int>("Position");
   b.add_input<decl::Int>("Length").min(0);
diff --git a/source/blender/nodes/function/nodes/node_fn_value_to_string.cc b/source/blender/nodes/function/nodes/node_fn_value_to_string.cc
index c1e6373cb6d..56206af2eb2 100644
--- a/source/blender/nodes/function/nodes/node_fn_value_to_string.cc
+++ b/source/blender/nodes/function/nodes/node_fn_value_to_string.cc
@@ -21,6 +21,7 @@ namespace blender::nodes {
 
 static void fn_node_value_to_string_declare(NodeDeclarationBuilder &b)
 {
+  b.is_function_node();
   b.add_input<decl::Float>("Value");
   b.add_input<decl::Int>("Decimals").min(0);
   b.add_output<decl::String>("String");