[PATCH 4/5] shaderc: add receipe

["Jose Quaresma" <quaresma.jose@gmail.com>]

A collection of tools, libraries and tests for shader compilation

This receipe is needed to build the gstreamer vulkan plugin
as it provides the binary glslc.

It is based on arch linux shaderc packge including the patches
https://github.com/archlinux/svntogit-packages/blob/91f0fa6ee3a220264a448527c1a8cf037caaad8e/trunk/PKGBUILD

    * 0001-fix-glslang-link-order.patch
      Upstream-Status: Backport [21c8be385b3fab5edcb934a6d99f69fd389c4e67]

    * 0002-shaderc-2019.0-fix-build-against-new-glslang.patch
      Upstream-Status: Pending

Signed-off-by: Jose Quaresma <quaresma.jose@gmail.com>
---
 .../files/0001-fix-glslang-link-order.patch   | 44 +++++++++++++++
 ...2019.0-fix-build-against-new-glslang.patch | 54 +++++++++++++++++++
 .../shaderc/shaderc_2019.0.bb                 | 36 +++++++++++++
 3 files changed, 134 insertions(+)
 create mode 100644 meta/recipes-graphics/shaderc/files/0001-fix-glslang-link-order.patch
 create mode 100644 meta/recipes-graphics/shaderc/files/0002-shaderc-2019.0-fix-build-against-new-glslang.patch
 create mode 100644 meta/recipes-graphics/shaderc/shaderc_2019.0.bb

diff --git a/meta/recipes-graphics/shaderc/files/0001-fix-glslang-link-order.patch b/meta/recipes-graphics/shaderc/files/0001-fix-glslang-link-order.patch
new file mode 100644
index 0000000000..a404c85839
--- /dev/null
+++ b/meta/recipes-graphics/shaderc/files/0001-fix-glslang-link-order.patch
@@ -0,0 +1,44 @@
+From 21c8be385b3fab5edcb934a6d99f69fd389c4e67 Mon Sep 17 00:00:00 2001
+From: Niklas Haas <git@haasn.xyz>
+Date: Tue, 29 May 2018 07:34:00 +0200
+Subject: [PATCH] Fix the link order of libglslang and libHLSL
+
+libglslang depends on libHLSL, so the latter needs to be specified last.
+This fixes an issue when trying to build shaderc against system-wide
+versions of libglslang/libHLSL, rather than the in-tree versions from
+third_party.
+
+Additionally, libshaderc_util also depends on SPIRV-Tools
+---
+ glslc/CMakeLists.txt           | 2 +-
+ libshaderc_util/CMakeLists.txt | 4 ++--
+ 2 files changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/glslc/CMakeLists.txt b/glslc/CMakeLists.txt
+index acf6fb0b..0f5d8886 100644
+--- a/glslc/CMakeLists.txt
++++ b/glslc/CMakeLists.txt
+@@ -18,7 +18,7 @@ add_library(glslc STATIC
+ shaderc_default_compile_options(glslc)
+ target_include_directories(glslc PUBLIC ${glslang_SOURCE_DIR})
+ target_link_libraries(glslc PRIVATE glslang OSDependent OGLCompiler
+-  HLSL glslang SPIRV ${CMAKE_THREAD_LIBS_INIT})
++  glslang SPIRV HLSL ${CMAKE_THREAD_LIBS_INIT})
+ target_link_libraries(glslc PRIVATE shaderc_util shaderc)
+ 
+ add_executable(glslc_exe src/main.cc)
+diff --git a/libshaderc_util/CMakeLists.txt b/libshaderc_util/CMakeLists.txt
+index 873540ab..6d0c465c 100644
+--- a/libshaderc_util/CMakeLists.txt
++++ b/libshaderc_util/CMakeLists.txt
+@@ -34,8 +34,8 @@ endif(SHADERC_ENABLE_INSTALL)
+ 
+ find_package(Threads)
+ target_link_libraries(shaderc_util PRIVATE
+-  glslang OSDependent OGLCompiler HLSL glslang SPIRV
+-  SPIRV-Tools-opt ${CMAKE_THREAD_LIBS_INIT})
++  glslang OSDependent OGLCompiler glslang HLSL SPIRV
++  SPIRV-Tools-opt SPIRV-Tools ${CMAKE_THREAD_LIBS_INIT})
+ 
+ shaderc_add_tests(
+   TEST_PREFIX shaderc_util
diff --git a/meta/recipes-graphics/shaderc/files/0002-shaderc-2019.0-fix-build-against-new-glslang.patch b/meta/recipes-graphics/shaderc/files/0002-shaderc-2019.0-fix-build-against-new-glslang.patch
new file mode 100644
index 0000000000..807540cf62
--- /dev/null
+++ b/meta/recipes-graphics/shaderc/files/0002-shaderc-2019.0-fix-build-against-new-glslang.patch
@@ -0,0 +1,54 @@
+diff --git a/libshaderc/src/shaderc.cc b/libshaderc/src/shaderc.cc
+index 3c3c3de..b5fc6cb 100644
+--- a/libshaderc/src/shaderc.cc
++++ b/libshaderc/src/shaderc.cc
+@@ -20,7 +20,7 @@
+ #include <sstream>
+ #include <vector>
+ 
+-#include "SPIRV/spirv.hpp"
++#include "glslang/SPIRV/spirv.hpp"
+ 
+ #include "libshaderc_util/compiler.h"
+ #include "libshaderc_util/counting_includer.h"
+diff --git a/libshaderc_util/src/compiler.cc b/libshaderc_util/src/compiler.cc
+index ef7867f..acc172b 100644
+--- a/libshaderc_util/src/compiler.cc
++++ b/libshaderc_util/src/compiler.cc
+@@ -26,7 +26,7 @@
+ #include "libshaderc_util/string_piece.h"
+ #include "libshaderc_util/version_profile.h"
+ 
+-#include "SPIRV/GlslangToSpv.h"
++#include "glslang/SPIRV/GlslangToSpv.h"
+ 
+ namespace {
+ using shaderc_util::string_piece;
+@@ -291,17 +291,12 @@ std::tuple<bool, std::vector<uint32_t>, size_t> Compiler::Compile(
+       bases[static_cast<int>(UniformKind::StorageBuffer)]);
+   shader.setShiftUavBinding(
+       bases[static_cast<int>(UniformKind::UnorderedAccessView)]);
+-  shader.setHlslIoMapping(hlsl_iomap_);
+   shader.setResourceSetBinding(
+       hlsl_explicit_bindings_[static_cast<int>(used_shader_stage)]);
+   shader.setEnvClient(target_client_info.client,
+                       target_client_info.client_version);
+   shader.setEnvTarget(target_client_info.target_language,
+                       target_client_info.target_language_version);
+-  if (hlsl_functionality1_enabled_) {
+-    shader.setEnvTargetHlslFunctionality1();
+-  }
+-
+   const EShMessages rules = GetMessageRules(target_env_, source_language_,
+                                             hlsl_offsets_,
+                                             generate_debug_info_);
+@@ -478,9 +473,6 @@ std::tuple<bool, std::string, std::string> Compiler::PreprocessShader(
+   }
+   shader.setEnvClient(target_client_info.client,
+                       target_client_info.client_version);
+-  if (hlsl_functionality1_enabled_) {
+-    shader.setEnvTargetHlslFunctionality1();
+-  }
+ 
+   // The preprocessor might be sensitive to the target environment.
+   // So combine the existing rules with the just-give-me-preprocessor-output
diff --git a/meta/recipes-graphics/shaderc/shaderc_2019.0.bb b/meta/recipes-graphics/shaderc/shaderc_2019.0.bb
new file mode 100644
index 0000000000..ac3db09937
--- /dev/null
+++ b/meta/recipes-graphics/shaderc/shaderc_2019.0.bb
@@ -0,0 +1,36 @@
+SUMMARY  = "A collection of tools, libraries and tests for shader compilation"
+DESCRIPTION = ""
+SECTION = "graphics"
+HOMEPAGE = "https://github.com/google/shaderc"
+LICENSE = "Apache-2.0"
+LIC_FILES_CHKSUM = "file://LICENSE;md5=86d3f3a95c324c9479bd8986968f4327"
+
+SRC_URI = "https://github.com/google/shaderc/archive/v${PV}.tar.gz \
+           file://0001-fix-glslang-link-order.patch \
+           file://0002-shaderc-2019.0-fix-build-against-new-glslang.patch \
+"
+SRC_URI[md5sum] = "8eb2b40712db2762a5cc40b568fd8ad9"
+SRC_URI[sha256sum] = "1018cd02be52295272fdbffa056ee24b881be277c83d039ad554d91230f4e11b"
+
+inherit cmake python3native
+
+DEPENDS = "spirv-tools-native glslang-native"
+
+EXTRA_OECMAKE = "-DCMAKE_BUILD_TYPE=Releas -DSHADERC_SKIP_TESTS=ON"
+
+do_configure_prepend() {
+    # de-vendor libs and disable git versioning
+    sed '/examples/d;/third_party/d' -i ${S}/CMakeLists.txt
+    sed '/build-version/d' -i ${S}/glslc/CMakeLists.txt
+    
+    # TODO: probably there is better solution for this.
+    # I dont know any method for get the version of a receipe dependent
+    # so do this ugly hack
+    cat <<- EOF > ${S}/glslc/src/build-version.inc
+"${PV}\\n"
+"$(pkg-config --modversion SPIRV-Tools)\\n"
+"$(glslangValidator --version | head -1 | cut -d' ' -f3)\\n"
+EOF
+}
+
+BBCLASSEXTEND = "native nativesdk"
-- 
2.28.0