forked from bartvdbraak/blender
Fix: OSL not recognizing UVTILE images
The OSL image compilation step needed to be taught about the new UVTILE
format for UDIM textures.
A small missing feature from OIIO[1] means this is a bit uglier than it
needs to be. Once we update to a version of OIIO with the fix we can
remove the string replace part.
[1] 35cb6a83e2
Differential Revision: https://developer.blender.org/D13912
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@ -32,6 +32,7 @@
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#include "util/color.h"
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#include "util/foreach.h"
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#include "util/log.h"
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#include "util/string.h"
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#include "util/transform.h"
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#include "kernel/tables.h"
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@ -462,8 +463,12 @@ void ImageTextureNode::compile(OSLCompiler &compiler)
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const ustring known_colorspace = metadata.colorspace;
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if (handle.svm_slot() == -1) {
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/* OIIO currently does not support <UVTILE> substitutions natively. Replace with a format they
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* understand. */
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std::string osl_filename = filename.string();
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string_replace(osl_filename, "<UVTILE>", "<U>_<V>");
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compiler.parameter_texture(
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"filename", filename, compress_as_srgb ? u_colorspace_raw : known_colorspace);
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"filename", ustring(osl_filename), compress_as_srgb ? u_colorspace_raw : known_colorspace);
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}
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else {
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compiler.parameter_texture("filename", handle.svm_slot());
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@ -472,7 +477,8 @@ void ImageTextureNode::compile(OSLCompiler &compiler)
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const bool unassociate_alpha = !(ColorSpaceManager::colorspace_is_data(colorspace) ||
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alpha_type == IMAGE_ALPHA_CHANNEL_PACKED ||
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alpha_type == IMAGE_ALPHA_IGNORE);
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const bool is_tiled = (filename.find("<UDIM>") != string::npos);
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const bool is_tiled = (filename.find("<UDIM>") != string::npos ||
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filename.find("<UVTILE>") != string::npos);
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compiler.parameter(this, "projection");
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compiler.parameter(this, "projection_blend");
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