From e4413dc72bfb228b0cd8bd78891833bbd089bf8e Mon Sep 17 00:00:00 2001
From: Lukas Stockner <lukas.stockner@freenet.de>
Date: Thu, 26 Dec 2019 18:55:36 +0100
Subject: Cycles: Use OIIO UDIM tag instead of %04d

---
 intern/cycles/blender/blender_shader.cpp |  5 +++--
 intern/cycles/blender/blender_util.h     | 18 ++++++------------
 intern/cycles/render/nodes.cpp           | 22 ++++------------------
 intern/cycles/render/nodes.h             |  1 -
 4 files changed, 13 insertions(+), 33 deletions(-)

(limited to 'intern')

diff --git a/intern/cycles/blender/blender_shader.cpp b/intern/cycles/blender/blender_shader.cpp
index 215953d1f29..206058259af 100644
--- a/intern/cycles/blender/blender_shader.cpp
+++ b/intern/cycles/blender/blender_shader.cpp
@@ -656,7 +656,7 @@ static ShaderNode *add_node(Scene *scene,
       }
       else {
         image->filename = image_user_file_path(
-            b_image_user, b_image, b_scene.frame_current(), &image->is_tiled);
+            b_image_user, b_image, b_scene.frame_current(), true);
         image->builtin_data = NULL;
       }
 
@@ -710,7 +710,8 @@ static ShaderNode *add_node(Scene *scene,
         env->builtin_data = b_image.ptr.data;
       }
       else {
-        env->filename = image_user_file_path(b_image_user, b_image, b_scene.frame_current(), NULL);
+        env->filename = image_user_file_path(
+            b_image_user, b_image, b_scene.frame_current(), false);
         env->builtin_data = NULL;
       }
 
diff --git a/intern/cycles/blender/blender_util.h b/intern/cycles/blender/blender_util.h
index 2c3e279a8d8..bea30a20b8c 100644
--- a/intern/cycles/blender/blender_util.h
+++ b/intern/cycles/blender/blender_util.h
@@ -234,24 +234,18 @@ static inline int render_resolution_y(BL::RenderSettings &b_render)
 static inline string image_user_file_path(BL::ImageUser &iuser,
                                           BL::Image &ima,
                                           int cfra,
-                                          bool *is_tiled)
+                                          bool load_tiled)
 {
-  if (is_tiled != NULL) {
-    *is_tiled = false;
-  }
-
   char filepath[1024];
   iuser.tile(0);
   BKE_image_user_frame_calc(NULL, iuser.ptr.data, cfra);
   BKE_image_user_file_path(iuser.ptr.data, ima.ptr.data, filepath);
-  if (ima.source() == BL::Image::source_TILED && is_tiled != NULL) {
-    char *udim_id = strstr(filepath, "1001");
-    if (udim_id != NULL) {
-      memcpy(udim_id, "%04d", 4);
-      *is_tiled = true;
-    }
+
+  string filepath_str = string(filepath);
+  if (load_tiled && ima.source() == BL::Image::source_TILED) {
+    string_replace(filepath_str, "1001", "<UDIM>");
   }
-  return string(filepath);
+  return filepath_str;
 }
 
 static inline int image_user_frame_number(BL::ImageUser &iuser, int cfra)
diff --git a/intern/cycles/render/nodes.cpp b/intern/cycles/render/nodes.cpp
index d176f58e636..e4339b40744 100644
--- a/intern/cycles/render/nodes.cpp
+++ b/intern/cycles/render/nodes.cpp
@@ -235,8 +235,6 @@ NODE_DEFINE(ImageTextureNode)
   SOCKET_STRING(filename, "Filename", ustring());
   SOCKET_STRING(colorspace, "Colorspace", u_colorspace_auto);
 
-  SOCKET_BOOLEAN(is_tiled, "Is Tiled", false);
-
   static NodeEnum alpha_type_enum;
   alpha_type_enum.insert("auto", IMAGE_ALPHA_AUTO);
   alpha_type_enum.insert("unassociated", IMAGE_ALPHA_UNASSOCIATED);
@@ -381,9 +379,7 @@ void ImageTextureNode::compile(SVMCompiler &compiler)
     bool have_metadata = false;
     foreach (int tile, tiles) {
       string tile_name = filename.string();
-      if (is_tiled) {
-        tile_name = string_printf(tile_name.c_str(), tile);
-      }
+      string_replace(tile_name, "<UDIM>", string_printf("%04d", tile));
 
       ImageMetaData metadata;
       int slot = image_manager->add_image(tile_name,
@@ -505,9 +501,7 @@ void ImageTextureNode::compile(OSLCompiler &compiler)
     ImageMetaData metadata;
     if (builtin_data == NULL) {
       string tile_name = filename.string();
-      if (is_tiled) {
-        tile_name = string_printf(tile_name.c_str(), 1001);
-      }
+      string_replace(tile_name, "<UDIM>", "1001");
       image_manager->get_image_metadata(tile_name, NULL, colorspace, metadata);
       slots.push_back(-1);
     }
@@ -529,17 +523,8 @@ void ImageTextureNode::compile(OSLCompiler &compiler)
   }
 
   if (slots[0] == -1) {
-    ustring texture_name = filename;
-    if (is_tiled) {
-      size_t udim_pos = filename.rfind("%04d");
-      if (udim_pos != string::npos) {
-        string texture_name_str = filename.string();
-        texture_name_str.replace(udim_pos, 4, "<UDIM>");
-        texture_name = ustring(texture_name_str);
-      }
-    }
     compiler.parameter_texture(
-        "filename", texture_name, compress_as_srgb ? u_colorspace_raw : known_colorspace);
+        "filename", filename, compress_as_srgb ? u_colorspace_raw : known_colorspace);
   }
   else {
     compiler.parameter_texture("filename", slots[0]);
@@ -548,6 +533,7 @@ void ImageTextureNode::compile(OSLCompiler &compiler)
   const bool unassociate_alpha = !(ColorSpaceManager::colorspace_is_data(colorspace) ||
                                    alpha_type == IMAGE_ALPHA_CHANNEL_PACKED ||
                                    alpha_type == IMAGE_ALPHA_IGNORE);
+  const bool is_tiled = (filename.find("<UDIM>") != string::npos);
 
   compiler.parameter(this, "projection");
   compiler.parameter(this, "projection_blend");
diff --git a/intern/cycles/render/nodes.h b/intern/cycles/render/nodes.h
index 5b23ef6929e..a8fe7644957 100644
--- a/intern/cycles/render/nodes.h
+++ b/intern/cycles/render/nodes.h
@@ -114,7 +114,6 @@ class ImageTextureNode : public ImageSlotTextureNode {
   bool animated;
   float3 vector;
   ccl::vector<int> tiles;
-  bool is_tiled;
 
   /* Runtime. */
   bool is_float;
-- 
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