diff --git a/graphics/glslang/Makefile b/graphics/glslang/Makefile
index 665b75699dde..07e10e24595c 100644
--- a/graphics/glslang/Makefile
+++ b/graphics/glslang/Makefile
@@ -1,21 +1,21 @@
 PORTNAME=	glslang
-DISTVERSION=	14.3.0
+DISTVERSION=	15.0.0
 CATEGORIES=	graphics
 
 MAINTAINER=	jbeich@FreeBSD.org
 COMMENT=	OpenGL and OpenGL ES shader front end and validator
 WWW=		https://www.khronos.org/opengles/sdk/tools/Reference-Compiler/
 
 LICENSE=	APACHE20 BSD2CLAUSE BSD3CLAUSE GPLv3+ MIT
 LICENSE_COMB=	multi
 LICENSE_FILE=	${WRKSRC}/LICENSE.txt
 
 TEST_DEPENDS=	bash:shells/bash \
 		gmake:devel/gmake
 
 USES=		cmake:testing compiler:c++11-lib python:build
 USE_GITHUB=	yes
 GH_ACCOUNT=	KhronosGroup
 CMAKE_ON=	ALLOW_EXTERNAL_SPIRV_TOOLS
 
 .include <bsd.port.mk>
diff --git a/graphics/glslang/distinfo b/graphics/glslang/distinfo
index a053d1ad9158..021a610a83ef 100644
--- a/graphics/glslang/distinfo
+++ b/graphics/glslang/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1719355363
-SHA256 (KhronosGroup-glslang-14.3.0_GH0.tar.gz) = be6339048e20280938d9cb399fcdd06e04f8654d43e170e8cce5a56c9a754284
-SIZE (KhronosGroup-glslang-14.3.0_GH0.tar.gz) = 3851265
+TIMESTAMP = 1727305844
+SHA256 (KhronosGroup-glslang-15.0.0_GH0.tar.gz) = c31c8c2e89af907507c0631273989526ee7d5cdf7df95ececd628fd7b811e064
+SIZE (KhronosGroup-glslang-15.0.0_GH0.tar.gz) = 3864508
diff --git a/graphics/glslang/pkg-plist b/graphics/glslang/pkg-plist
index 06083f4c46c4..435b7f2856d3 100644
--- a/graphics/glslang/pkg-plist
+++ b/graphics/glslang/pkg-plist
@@ -1,27 +1,29 @@
 bin/glslang
 bin/glslangValidator
 bin/spirv-remap
 include/glslang/Include/ResourceLimits.h
 include/glslang/Include/glslang_c_interface.h
 include/glslang/Include/glslang_c_shader_types.h
+include/glslang/Include/visibility.h
 include/glslang/MachineIndependent/Versions.h
 include/glslang/Public/ResourceLimits.h
 include/glslang/Public/ShaderLang.h
 include/glslang/Public/resource_limits_c.h
 include/glslang/SPIRV/GlslangToSpv.h
 include/glslang/SPIRV/Logger.h
 include/glslang/SPIRV/SPVRemapper.h
+include/glslang/SPIRV/SpvTools.h
 include/glslang/SPIRV/disassemble.h
 include/glslang/SPIRV/spirv.hpp
 include/glslang/build_info.h
 lib/cmake/glslang/glslang-config-version.cmake
 lib/cmake/glslang/glslang-config.cmake
 lib/cmake/glslang/glslang-targets-%%CMAKE_BUILD_TYPE%%.cmake
 lib/cmake/glslang/glslang-targets.cmake
 lib/libGenericCodeGen.a
 lib/libMachineIndependent.a
 lib/libOSDependent.a
 lib/libSPIRV.a
 lib/libSPVRemapper.a
 lib/libglslang-default-resource-limits.a
 lib/libglslang.a
diff --git a/graphics/libplacebo/Makefile b/graphics/libplacebo/Makefile
index c7377dc81152..54eaea842a3c 100644
--- a/graphics/libplacebo/Makefile
+++ b/graphics/libplacebo/Makefile
@@ -1,76 +1,77 @@
 PORTNAME=	libplacebo
 DISTVERSIONPREFIX=	v
 DISTVERSION=	7.349.0
 CATEGORIES=	graphics
 
 MAINTAINER=	jbeich@FreeBSD.org
 COMMENT=	Reusable library for GPU-accelerated video/image rendering
 WWW=		https://code.videolan.org/videolan/libplacebo
 
 LICENSE=	LGPL21+
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 USES=		compiler:c11 localbase:ldflags meson pkgconfig python:build
 USE_GITHUB=	nodefault
 USE_GITLAB=	yes
 USE_LDCONFIG=	yes
 GL_SITE=	https://code.videolan.org
 GL_ACCOUNT=	videolan
 GH_TUPLE=	fastfloat:fast_float:v5.2.0:fast_float/3rdparty/fast_float
 MESON_ARGS=	-Dd3d11=disabled -Dlibdovi=disabled -Ddemos=false
 
 OPTIONS_DEFINE=	LCMS2 LIBUNWIND OPENGL TEST VULKAN XXHASH
 OPTIONS_DEFAULT=LCMS2 LIBUNWIND OPENGL SHADERC XXHASH
 OPTIONS_SINGLE=	VULKAN
 OPTIONS_SINGLE_VULKAN=	GLSLANG SHADERC
 OPTIONS_EXCLUDE+=	${ARCH:Naarch64:Namd64:Narmv[67]:Ni386:Npowerpc64:Npowerpc64le:Nx86_64:C/.+/LIBUNWIND/}
 OPTIONS_SUB=	yes
 
 GLSLANG_DESC=		glslang SPIR-V compiler
 GLSLANG_BUILD_DEPENDS=	glslang>0:graphics/glslang
 GLSLANG_MESON_ENABLED=	glslang
 GLSLANG_IMPLIES=	VULKAN
+GLSLANG_BROKEN=		fails to build with glslang 15
 
 LCMS2_LIB_DEPENDS=	liblcms2.so:graphics/lcms2
 LCMS2_MESON_ENABLED=		lcms
 
 LIBUNWIND_DESC=		Use libunwind for stacktraces
 LIBUNWIND_LIB_DEPENDS=	libunwind.so:devel/libunwind
 LIBUNWIND_MESON_ENABLED=	unwind
 
 OPENGL_USE=		GITHUB=nodefault
 OPENGL_GH_TUPLE=	Dav1dde:glad:v2.0.4:glad/3rdparty/glad
 OPENGL_MESON_ENABLED=	opengl
 
 SHADERC_DESC=		libshaderc SPIR-V compiler
 SHADERC_LIB_DEPENDS=	libshaderc_shared.so:graphics/shaderc
 SHADERC_MESON_ENABLED=	shaderc
 SHADERC_IMPLIES=	VULKAN
 
 TEST_MESON_TRUE=	tests
 
 VULKAN_DESC=		Vulkan-based renderer
 VULKAN_BUILD_DEPENDS=	${LOCALBASE}/include/vulkan/vulkan.h:graphics/vulkan-headers \
 			${PYTHON_PKGNAMEPREFIX}Jinja2>0:devel/py-Jinja2@${PY_FLAVOR}
 VULKAN_LIB_DEPENDS=	libvulkan.so:graphics/vulkan-loader
 VULKAN_MESON_ENABLED=	vulkan
 
 XXHASH_DESC=		Faster replacement for internal siphash
 XXHASH_BUILD_DEPENDS=	xxhash>0:devel/xxhash
 XXHASH_RUN_DEPENDS=	xxhash>0:devel/xxhash # pkg-config
 XXHASH_MESON_ENABLED=	xxhash
 
 post-patch:
 	@${REINPLACE_CMD} -e 's,/usr/share,${PREFIX}/share,' \
 		${WRKSRC}/src/vulkan/utils_gen.py
 # https://github.com/mesonbuild/meson/issues/7746
 	@${REINPLACE_CMD} "s,static:,dirs: '${LOCALBASE}/lib'\, &," \
 		${WRKSRC}/src/glsl/meson.build
 # Extract (snapshot) version from port version instead of meson.build
 	@${REINPLACE_CMD} -e "s/'git'/'${FALSE}'/" \
 		-e "s/version_pretty/'${DISTVERSIONFULL}'/" \
 		${WRKSRC}/src/meson.build
 
 pre-install-TEST-on:	do-test
 
 .include <bsd.port.mk>