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Compositor: Optimize nodes with Boolean and Menu inputs

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This patch optimizes nodes with Boolean and Menu inputs for GPU
execution. This is done by using constant links instead of uniforms for
those inputs. This will cause shader recompilation, but is okay since
those inputs rarely change.

Pull Request: https://projects.blender.org/blender/blender/pulls/145329
This commit is contained in:
Omar Emara
2025-08-28 16:00:58 +02:00
committed by Omar Emara
parent fdf95b53fa
commit 5cabc57af0
1 changed files with 5 additions and 2 deletions
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7
source/blender/compositor/intern/shader_operation.cc
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@@ -276,9 +276,12 @@ void ShaderOperation::link_node_input_constant(const DInputSocket input, const D
ShaderNode &node = *shader_nodes_.lookup(input.node());
GPUNodeStack &stack = node.get_input(input->identifier);
/* Create a uniform link that carry the value of the origin. */
/* Create a constant or a uniform link that carry the value of the origin. Use a constant for
* socket types that rarely change like booleans and menus, while use a uniform for socket type
* that might change a lot to avoid excessive shader recompilation. */
initialize_input_stack_value(origin, stack);
GPUNodeLink *link = GPU_uniform(stack.vec);
const bool use_as_constant = ELEM(origin->type, SOCK_BOOLEAN, SOCK_MENU);
GPUNodeLink *link = use_as_constant ? GPU_constant(stack.vec) : GPU_uniform(stack.vec);
const ResultType type = get_node_socket_result_type(origin.bsocket());
const char *function_name = get_set_function_name(type);