1 files changed, 122 insertions, 3 deletions

diff --git a/source/blender/nodes/composite/nodes/node_composite_mixrgb.cc b/source/blender/nodes/composite/nodes/node_composite_mixrgb.cc
index fc11aa188b0..a1fbbfe7d40 100644
--- a/source/blender/nodes/composite/nodes/node_composite_mixrgb.cc
+++ b/source/blender/nodes/composite/nodes/node_composite_mixrgb.cc
@@ -5,6 +5,14 @@
  * \ingroup cmpnodes
  */
 
+#include "BLI_assert.h"
+
+#include "DNA_material_types.h"
+
+#include "GPU_material.h"
+
+#include "COM_shader_node.hh"
+
 #include "node_composite_util.hh"
 
 /* **************** MIX RGB ******************** */
@@ -13,12 +21,122 @@ namespace blender::nodes::node_composite_mixrgb_cc {
 
 static void cmp_node_mixrgb_declare(NodeDeclarationBuilder &b)
 {
-  b.add_input<decl::Float>(N_("Fac")).default_value(1.0f).min(0.0f).max(1.0f).subtype(PROP_FACTOR);
-  b.add_input<decl::Color>(N_("Image")).default_value({1.0f, 1.0f, 1.0f, 1.0f});
-  b.add_input<decl::Color>(N_("Image"), "Image_001").default_value({1.0f, 1.0f, 1.0f, 1.0f});
+  b.add_input<decl::Float>(N_("Fac"))
+      .default_value(1.0f)
+      .min(0.0f)
+      .max(1.0f)
+      .subtype(PROP_FACTOR)
+      .compositor_domain_priority(2);
+  b.add_input<decl::Color>(N_("Image"))
+      .default_value({1.0f, 1.0f, 1.0f, 1.0f})
+      .compositor_domain_priority(0);
+  b.add_input<decl::Color>(N_("Image"), "Image_001")
+      .default_value({1.0f, 1.0f, 1.0f, 1.0f})
+      .compositor_domain_priority(1);
   b.add_output<decl::Color>(N_("Image"));
 }
 
+using namespace blender::realtime_compositor;
+
+class MixRGBShaderNode : public ShaderNode {
+ public:
+  using ShaderNode::ShaderNode;
+
+  void compile(GPUMaterial *material) override
+  {
+    GPUNodeStack *inputs = get_inputs_array();
+    GPUNodeStack *outputs = get_outputs_array();
+
+    if (get_use_alpha()) {
+      GPU_link(material,
+               "multiply_by_alpha",
+               get_input_link("Fac"),
+               get_input_link("Image_001"),
+               &get_input("Fac").link);
+    }
+
+    GPU_stack_link(material, &bnode(), get_shader_function_name(), inputs, outputs);
+
+    if (!get_should_clamp()) {
+      return;
+    }
+
+    const float min[4] = {0.0f, 0.0f, 0.0f, 0.0f};
+    const float max[4] = {1.0f, 1.0f, 1.0f, 1.0f};
+    GPU_link(material,
+             "clamp_color",
+             get_output("Image").link,
+             GPU_constant(min),
+             GPU_constant(max),
+             &get_output("Image").link);
+  }
+
+  int get_mode()
+  {
+    return bnode().custom1;
+  }
+
+  const char *get_shader_function_name()
+  {
+    switch (get_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";
+    }
+
+    BLI_assert_unreachable();
+    return nullptr;
+  }
+
+  bool get_use_alpha()
+  {
+    return bnode().custom2 & SHD_MIXRGB_USE_ALPHA;
+  }
+
+  bool get_should_clamp()
+  {
+    return bnode().custom2 & SHD_MIXRGB_CLAMP;
+  }
+};
+
+static ShaderNode *get_compositor_shader_node(DNode node)
+{
+  return new MixRGBShaderNode(node);
+}
+
 }  // namespace blender::nodes::node_composite_mixrgb_cc
 
 void register_node_type_cmp_mix_rgb()
@@ -31,6 +149,7 @@ void register_node_type_cmp_mix_rgb()
   ntype.flag |= NODE_PREVIEW;
   ntype.declare = file_ns::cmp_node_mixrgb_declare;
   ntype.labelfunc = node_blend_label;
+  ntype.get_compositor_shader_node = file_ns::get_compositor_shader_node;
 
   nodeRegisterType(&ntype);
 }