Revert moving all shader nodes to c++

This reverts to following commits:
* rB5cad004d716da02f511bd34983ac7da820308676
* rB97e3a2d935ba9b21b127eda7ca104d4bcf4e48bd
* rBf60b95b5320f8d6abe6a629fe8fc4f1b94d0d91c
* rB0bd3cad04edf4bf9b9d3b1353f955534aa5e6740
* rBf72cc47d8edf849af98e196f721022bacf86a5e7
* rB3f7014ecc9d523997062eadd62888af5fc70a2b6
* rB0578921063fbb081239439062215f2538a31af4b
* rBc20098e6ec6adee874a12e510aa4a56d89f92838
* rBd5efda72f501ad95679d7ac554086a1fb18c1ac0

The original move to c++ that the other commits depended upon had some issues
that should be fixed before committing it again. The issues were reported in
T93797, T93809 and T93798.

We should also find a better rule for not using c-style casts going forward,
although that wouldn't have been reason enough to revert the commits.
Introducing something like a `MEM_new<T>` and `MEM_delete<T>`
function might help with the the most common case of casting the return
type of `MEM_malloc`.

Going forward, I recommend first committing the changes that don't
require converting files to c++. Then convert the shading node files
in smaller chunks. Especially don't mix fairly low risk changes like
moving some simple nodes, with higher risk changes.

1 files changed, 0 insertions, 74 deletions

diff --git a/source/blender/nodes/shader/nodes/node_shader_rgb_to_bw.cc b/source/blender/nodes/shader/nodes/node_shader_rgb_to_bw.cc
deleted file mode 100644
index 7d6fec4b7c5..00000000000
--- a/source/blender/nodes/shader/nodes/node_shader_rgb_to_bw.cc
+++ /dev/null
@@ -1,74 +0,0 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2005 Blender Foundation.
- * All rights reserved.
- */
-
-/** \file
- * \ingroup shdnodes
- */
-
-#include "IMB_colormanagement.h"
-
-#include "node_shader_util.hh"
-
-namespace blender::nodes::node_shader_rgb_to_bw_cc {
-
-static void sh_node_rgbtobw_declare(NodeDeclarationBuilder &b)
-{
-  b.add_input<decl::Color>(N_("Color")).default_value({0.5f, 0.5f, 0.5f, 1.0f});
-  b.add_output<decl::Float>(N_("Val"));
-};
-
-static void node_shader_exec_rgbtobw(void *UNUSED(data),
-                                     int UNUSED(thread),
-                                     bNode *UNUSED(node),
-                                     bNodeExecData *UNUSED(execdata),
-                                     bNodeStack **in,
-                                     bNodeStack **out)
-{
-  /* Stack order out: BW. */
-  /* Stack order in: COL. */
-  float col[3];
-  nodestack_get_vec(col, SOCK_VECTOR, in[0]);
-
-  out[0]->vec[0] = IMB_colormanagement_get_luminance(col);
-}
-
-static int gpu_shader_rgbtobw(GPUMaterial *mat,
-                              bNode *node,
-                              bNodeExecData *UNUSED(execdata),
-                              GPUNodeStack *in,
-                              GPUNodeStack *out)
-{
-  return GPU_stack_link(mat, node, "rgbtobw", in, out);
-}
-
-}  // namespace blender::nodes::node_shader_rgb_to_bw_cc
-
-void register_node_type_sh_rgbtobw()
-{
-  namespace file_ns = blender::nodes::node_shader_rgb_to_bw_cc;
-
-  static bNodeType ntype;
-
-  sh_node_type_base(&ntype, SH_NODE_RGBTOBW, "RGB to BW", NODE_CLASS_CONVERTER, 0);
-  ntype.declare = file_ns::sh_node_rgbtobw_declare;
-  node_type_exec(&ntype, nullptr, nullptr, file_ns::node_shader_exec_rgbtobw);
-  node_type_gpu(&ntype, file_ns::gpu_shader_rgbtobw);
-
-  nodeRegisterType(&ntype);
-}