Nodes: move mix rgb node to C++

Prepare node for conversion to Geometry Nodes.

There should be no functional changes.

Reviewed By: HooglyBoogly

Differential Revision: https://developer.blender.org/D11506

3 files changed, 48 insertions, 23 deletions

diff --git a/source/blender/nodes/CMakeLists.txt b/source/blender/nodes/CMakeLists.txt
index 025ce79ffc5..fbe3377194a 100644
--- a/source/blender/nodes/CMakeLists.txt
+++ b/source/blender/nodes/CMakeLists.txt
@@ -242,7 +242,7 @@ set(SRC
   shader/nodes/node_shader_map_range.cc
   shader/nodes/node_shader_mapping.c
   shader/nodes/node_shader_math.cc
-  shader/nodes/node_shader_mixRgb.c
+  shader/nodes/node_shader_mixRgb.cc
   shader/nodes/node_shader_mix_shader.c
   shader/nodes/node_shader_normal.c
   shader/nodes/node_shader_normal_map.c
diff --git a/source/blender/nodes/shader/nodes/node_shader_mixRgb.c b/source/blender/nodes/shader/nodes/node_shader_mixRgb.cc
index 090c6216224..52f2adb10dd 100644
--- a/source/blender/nodes/shader/nodes/node_shader_mixRgb.c
+++ b/source/blender/nodes/shader/nodes/node_shader_mixRgb.cc
@@ -61,35 +61,60 @@ static void node_shader_exec_mix_rgb(void *UNUSED(data),
   copy_v3_v3(out[0]->vec, col);
 }
 
+static const char *gpu_shader_get_name(int mode)
+{
+  switch (mode) {
+    case MA_RAMP_BLEND:
+      return "mix_blend";
+    case MA_RAMP_ADD:
+      return "mix_add";
+    case MA_RAMP_MULT:
+      return "mix_mult";
+    case MA_RAMP_SUB:
+      return "mix_sub";
+    case MA_RAMP_SCREEN:
+      return "mix_screen";
+    case MA_RAMP_DIV:
+      return "mix_div";
+    case MA_RAMP_DIFF:
+      return "mix_diff";
+    case MA_RAMP_DARK:
+      return "mix_dark";
+    case MA_RAMP_LIGHT:
+      return "mix_light";
+    case MA_RAMP_OVERLAY:
+      return "mix_overlay";
+    case MA_RAMP_DODGE:
+      return "mix_dodge";
+    case MA_RAMP_BURN:
+      return "mix_burn";
+    case MA_RAMP_HUE:
+      return "mix_hue";
+    case MA_RAMP_SAT:
+      return "mix_sat";
+    case MA_RAMP_VAL:
+      return "mix_val";
+    case MA_RAMP_COLOR:
+      return "mix_color";
+    case MA_RAMP_SOFT:
+      return "mix_soft";
+    case MA_RAMP_LINEAR:
+      return "mix_linear";
+  }
+
+  return nullptr;
+}
+
 static int gpu_shader_mix_rgb(GPUMaterial *mat,
                               bNode *node,
                               bNodeExecData *UNUSED(execdata),
                               GPUNodeStack *in,
                               GPUNodeStack *out)
 {
-  static const char *names[] = {
-      "mix_blend",
-      "mix_add",
-      "mix_mult",
-      "mix_sub",
-      "mix_screen",
-      "mix_div",
-      "mix_diff",
-      "mix_dark",
-      "mix_light",
-      "mix_overlay",
-      "mix_dodge",
-      "mix_burn",
-      "mix_hue",
-      "mix_sat",
-      "mix_val",
-      "mix_color",
-      "mix_soft",
-      "mix_linear",
-  };
+  const char *name = gpu_shader_get_name(node->custom1);
 
-  if (node->custom1 < ARRAY_SIZE(names) && names[node->custom1]) {
-    int ret = GPU_stack_link(mat, node, names[node->custom1], in, out);
+  if (name != nullptr) {
+    int ret = GPU_stack_link(mat, node, name, in, out);
     if (ret && node->custom2 & SHD_MIXRGB_CLAMP) {
       const float min[3] = {0.0f, 0.0f, 0.0f};
       const float max[3] = {1.0f, 1.0f, 1.0f};
diff --git a/source/tools b/source/tools
-Subproject 01f51a0e551ab730f0934dc6488613690ac4bf8
+Subproject f99d29ae3e6ad44d45d79309454c45f8088781a