node_composite_posterize.cc

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/* SPDX-FileCopyrightText: 2021 Blender Authors
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */
 
#include "GPU_material.hh"
 
#include "COM_shader_node.hh"
 
#include "node_composite_util.hh"
 
/* **************** Posterize ******************** */
 
namespace blender::nodes::node_composite_posterize_cc {
 
static void cmp_node_posterize_declare(NodeDeclarationBuilder &b)
{
  b.add_input<decl::Color>("Image")
      .default_value({1.0f, 1.0f, 1.0f, 1.0f})
      .compositor_domain_priority(0);
  b.add_input<decl::Float>("Steps")
      .default_value(8.0f)
      .min(2.0f)
      .max(1024.0f)
      .compositor_domain_priority(1);
  b.add_output<decl::Color>("Image");
}
 
using namespace blender::realtime_compositor;
 
class PosterizeShaderNode : public ShaderNode {
 public:
  using ShaderNode::ShaderNode;
 
  void compile(GPUMaterial *material) override
  {
    GPUNodeStack *inputs = get_inputs_array();
    GPUNodeStack *outputs = get_outputs_array();
 
    GPU_stack_link(material, &bnode(), "node_composite_posterize", inputs, outputs);
  }
};
 
static ShaderNode *get_compositor_shader_node(DNode node)
{
  return new PosterizeShaderNode(node);
}
 
}  // namespace blender::nodes::node_composite_posterize_cc
 
void register_node_type_cmp_posterize()
{
  namespace file_ns = blender::nodes::node_composite_posterize_cc;
 
  static blender::bke::bNodeType ntype;
 
  cmp_node_type_base(&ntype, CMP_NODE_POSTERIZE, "Posterize", NODE_CLASS_OP_COLOR);
  ntype.declare = file_ns::cmp_node_posterize_declare;
  ntype.get_compositor_shader_node = file_ns::get_compositor_shader_node;
 
  blender::bke::node_register_type(&ntype);
}