Stage for v1.15.2.0

Signed-off-by: Larry Gritz <lg@larrygritz.com>

Author: lgritz

CHANGES.md

@@ -1,6 +1,26 @@
 <!-- SPDX-License-Identifier: CC-BY-4.0 -->
 <!-- Copyright Contributors to the Open Shading Language Project. -->
 
+Release 1.15.2.0 (Mar 10, 2026) -- compared to 1.15.1.0
+-------------------------------------------------------------
+  - *feat*: Add more shader group diagnostics to `compile_report` (active layers, connection depth, texture and noise op counts) [#2085](https://github.com/AcademySoftwareFoundation/OpenShadingLanguage/pull/2085)
+  - *bsdl improvements*:
+    - *bsdl*: Move GeneralizedSchlick lobe from testrender into BSDL library, unifying DielectricRefl/DielectricBoth into a single `DielectricBSDF<Fresnel>` template [#2078](https://github.com/AcademySoftwareFoundation/OpenShadingLanguage/pull/2078) (by Alejandro Conty)
+    - *bsdl*: Move MaterialX sheen BSDF into BSDL as `mtx::SheenLobe`, consolidating sheen implementations from testrender and SPI into one place [#2084](https://github.com/AcademySoftwareFoundation/OpenShadingLanguage/pull/2084) (by Alejandro Conty)
+    - *bsdl*: Clamp BSDL/MTX Fresnel inputs to [0,1] and fix bootstrap Imath link [#2081](https://github.com/AcademySoftwareFoundation/OpenShadingLanguage/pull/2081) (by Alejandro Conty)
+  - *fix*: Make `linearstep` definitely return 1 for x > edge1 [#2064](https://github.com/AcademySoftwareFoundation/OpenShadingLanguage/pull/2064) (by Roeland Schoukens)
+  - *perf/fix*: Change default JIT FMA mode to Strict (no fused multiply-add), improving cross-platform numerical consistency [#2076](https://github.com/AcademySoftwareFoundation/OpenShadingLanguage/pull/2076)
+  - *testshade*: Route errors through renderer's own error handler; convert raw pointers to `unique_ptr` [#2082](https://github.com/AcademySoftwareFoundation/OpenShadingLanguage/pull/2082)
+  - *build*: Support LLVM 22 / clang 22 for building [#2086](https://github.com/AcademySoftwareFoundation/OpenShadingLanguage/pull/2086)
+  - *ci*: Add macOS 26 (ARM) to the CI lineup [#2079](https://github.com/AcademySoftwareFoundation/OpenShadingLanguage/pull/2079)
+  - *ci*: Stop nightly CI workflows on user forks [#2074](https://github.com/AcademySoftwareFoundation/OpenShadingLanguage/pull/2074)
+  - *ci*: Fix Windows curl LLVM download failure [#2089](https://github.com/AcademySoftwareFoundation/OpenShadingLanguage/pull/2089)
+  - *ci*: Fix and speed up Mac CI dependency installations via Homebrew [#2091](https://github.com/AcademySoftwareFoundation/OpenShadingLanguage/pull/2091)
+  - *testing*: Check in ref images for Mac ARM debug case [#2083](https://github.com/AcademySoftwareFoundation/OpenShadingLanguage/pull/2083)
+  - *docs*: Fix typo [#2077](https://github.com/AcademySoftwareFoundation/OpenShadingLanguage/pull/2077) (by Taraash)
+  - *admin*: Fix link to icon used for Slack release announcements [#2070](https://github.com/AcademySoftwareFoundation/OpenShadingLanguage/pull/2070)
+
+
 Release 1.15.1.0 (Feb 1, 2026) -- compared to 1.15.0.0
 -------------------------------------------------------------
   - *testrender*: Fix uv derivatives for testrender [#1978] [#2037](https://github.com/AcademySoftwareFoundation/OpenShadingLanguage/pull/2037) (by Alexey Smolenchuk)

CMakeLists.txt

@@ -4,7 +4,7 @@
 
 cmake_minimum_required (VERSION 3.19)
 
-set (OSL_VERSION "1.15.1.0")
+set (OSL_VERSION "1.15.2.0")
 set (OSL_VERSION_OVERRIDE "" CACHE STRING
      "Version override (use with caution)!")
 mark_as_advanced (OSL_VERSION_OVERRIDE)

README.md

@@ -465,6 +465,7 @@ nominated for major awards.)
   Murderbot (S1),
 * **(2026 / upcoming)**
   GOAT,
+  Hoppers,
   ...
 
 
@@ -573,12 +574,12 @@ Johnson, Ronan Keryell, Chris Kulla, Elvic Liang, Max Liani, Silvia Lopez,
 Adam Martinez, John Mertic, Bastien Montagne, Steena Monteiro, Patrick Mours,
 Alexis Oblet, Erich Ocean, Mikko Ohtamaa, Jean-Francois Panisset, Jino Park,
 Alexei Pawlow, Mitch Prater, Jay Reynolds, Declan Russell, Benoit Ruiz,
-Patrick Scheibe, Alex Schworer, Jonathan Scruggs, Sergey Sharybin, Mark
-Sisson, Sandip Shukla, Alexey Smolenchuk, Cliff Stein, Stephan Steinbach, Luya
-Tshimbalanga, Esteban Tovagliari, Brecht Van Lommel, Thibault Vergne,
-Alexander von Knorring, Aidan Welch, Alex Wells, Roman Zulak. (Listed
-alphabetically; if we've left anybody out, it is inadvertent, please let us
-know.)
+Patrick Scheibe, Roeland Schoukens, Alex Schworer, Jonathan Scruggs, Sergey
+Sharybin, Mark Sisson, Sandip Shukla, Alexey Smolenchuk, Cliff Stein, Stephan
+Steinbach, Taraash, Luya Tshimbalanga, Esteban Tovagliari, Brecht Van Lommel,
+Thibault Vergne, Alexander von Knorring, Aidan Welch, Alex Wells, Roman Zulak.
+(Listed alphabetically; if we've left anybody out, it is inadvertent, please
+let us know.)
 
 We cannot possibly express sufficient gratitude to the managers at Sony
 Pictures Imageworks who allowed this project to proceed, supported it