supoort of experimental Qt5/RHI dropped ( use Qt6 for RHI ). Building

the qsb files from the makefiles. See https://github.com/uwerat/qskinny/issues/356

README.md

@@ -35,9 +35,11 @@ It might support all versions Qt >= 5.15, but you can rely on:
 - current long term supported ( LTS ) version of Qt ( at the moment Qt 6.5.x )
 - current version of Qt
 
-On debian bullseye these packages need to be installed for Qt5: `build-essential
-qtbase5-dev qtbase5-private-dev qtdeclarative5-dev qtdeclarative5-private-dev libqt5svg5-dev`.
-For Qt6 you need the corresponding ones.
+On Debian these packages need to be installed for Qt6: `build-essential cmake
+qtbase6-dev qtbase6-private-dev qtdeclarative6-dev qtdeclarative6-private-dev libqt6svg-dev qt6-shadertools`
+For Qt5 you need: `build-essential cmake
+qtbase5-dev qtbase5-private-dev qtdeclarative5-dev qtdeclarative5-private-dev libqt5svg-dev`.
+
 
 > Optional: When enabling the `hunspell` feature the following package needs to be installed: `libhunspell-dev`
 

cmake/QskFindMacros.cmake

@@ -15,6 +15,11 @@ macro(qsk_setup_Qt)
     endif()
     find_package(QT "5.15" NAMES ${QSK_QT_VERSION} REQUIRED COMPONENTS Quick)
 
+    if(QT_VERSION_MAJOR VERSION_GREATER_EQUAL 6)
+        # we need the qsb tool for Qt6
+        find_package(Qt6 REQUIRED COMPONENTS ShaderTools)
+    endif()
+
     if ( QT_FOUND )
 
         # Would like to have a status message about where the Qt installation

src/CMakeLists.txt

@@ -173,7 +173,9 @@ list(APPEND SOURCES
     nodes/QskVertex.cpp
 )
 
-qt_add_resources(SOURCES nodes/shaders.qrc)
+if (QT_VERSION_MAJOR VERSION_LESS 6)
+    qt_add_resources(SOURCES nodes/shaders.qrc)
+endif()
 
 list(APPEND HEADERS
     controls/QskAbstractButton.h
@@ -473,6 +475,49 @@ if(BUILD_QSKDLL)
     set_target_properties(${target} PROPERTIES DEFINE_SYMBOL QSK_MAKEDLL)
 endif()
 
+if (QT_VERSION_MAJOR VERSION_GREATER_EQUAL 6)
+
+    qt6_add_shaders(${target} "qskshaders"
+
+        BATCHABLE
+        PRECOMPILE
+
+        #OPTIMIZED
+        QUIET
+
+        PREFIX
+            "/qskinny/shaders"
+
+        FILES
+            nodes/shaders/arcshadow-vulkan.vert
+            nodes/shaders/arcshadow-vulkan.frag
+            nodes/shaders/boxshadow-vulkan.vert
+            nodes/shaders/boxshadow-vulkan.frag
+            nodes/shaders/crisplines-vulkan.vert
+            nodes/shaders/crisplines-vulkan.frag
+            nodes/shaders/gradientconic-vulkan.vert
+            nodes/shaders/gradientconic-vulkan.frag
+            nodes/shaders/gradientlinear-vulkan.vert
+            nodes/shaders/gradientlinear-vulkan.frag
+            nodes/shaders/gradientradial-vulkan.vert
+            nodes/shaders/gradientradial-vulkan.frag
+
+        OUTPUTS
+            arcshadow.vert.qsb
+            arcshadow.frag.qsb
+            boxshadow.vert.qsb
+            boxshadow.frag.qsb
+            crisplines.vert.qsb
+            crisplines.frag.qsb
+            gradientconic.vert.qsb
+            gradientconic.frag.qsb
+            gradientlinear.vert.qsb
+            gradientlinear.frag.qsb
+            gradientradial.vert.qsb
+            gradientradial.frag.qsb
+    )
+endif()
+
 target_include_directories(${target} PUBLIC
     $<BUILD_INTERFACE:${CMAKE_CURRENT_LIST_DIR}/common>
     $<BUILD_INTERFACE:${CMAKE_CURRENT_LIST_DIR}/controls>

src/controls/QskWindow.cpp

@@ -416,6 +416,20 @@ void QskWindow::keyReleaseEvent( QKeyEvent* event )
 
 void QskWindow::exposeEvent( QExposeEvent* event )
 {
+#if QT_VERSION < QT_VERSION_CHECK( 6, 0, 0 )
+    if ( qskRenderingHardwareInterface( this ) )
+    {
+        /*
+            Actually our code supports Qt5 RHI ( f9c08c34fb2cc64546bbe6ce9d359f416e934961 ),
+            but Qt5 does not come with the qsb tool out of the box. Then we run into
+            problems with compiling the shader code from the makefiles.
+            But why should anyone use the experimental Qt5 RHI implementations
+            instead of using Qt6 ...
+         */
+        qFatal( "the experimental Qt5 RHI implementation is not supported:\n"
+            "\tuse Qt6 or run the default OpenGL backend." );
+    }
+#endif
     ensureFocus( Qt::OtherFocusReason );
     layoutItems();
 

src/nodes/shaders.qrc

@@ -2,33 +2,21 @@
 <RCC version="1.0">
     <qresource prefix="/qskinny/">
 
-        <file>shaders/arcshadow.frag</file>
         <file>shaders/arcshadow.vert</file>
-        <file>shaders/arcshadow.frag.qsb</file>
-        <file>shaders/arcshadow.vert.qsb</file>
+        <file>shaders/arcshadow.frag</file>
 
-        <file>shaders/boxshadow.vert.qsb</file>
-        <file>shaders/boxshadow.frag.qsb</file>
         <file>shaders/boxshadow.vert</file>
         <file>shaders/boxshadow.frag</file>
 
-        <file>shaders/gradientconic.vert.qsb</file>
-        <file>shaders/gradientconic.frag.qsb</file>
         <file>shaders/gradientconic.vert</file>
         <file>shaders/gradientconic.frag</file>
 
-        <file>shaders/gradientradial.vert.qsb</file>
-        <file>shaders/gradientradial.frag.qsb</file>
         <file>shaders/gradientradial.vert</file>
         <file>shaders/gradientradial.frag</file>
 
-        <file>shaders/gradientlinear.vert.qsb</file>
-        <file>shaders/gradientlinear.frag.qsb</file>
         <file>shaders/gradientlinear.vert</file>
         <file>shaders/gradientlinear.frag</file>
 
-        <file>shaders/crisplines.vert.qsb</file>
-        <file>shaders/crisplines.frag.qsb</file>
         <file>shaders/crisplines.vert</file>
 
     </qresource>

src/nodes/shaders/arcshadow2qsb.sh

@@ -1,10 +0,0 @@
-#! /bin/sh 
-
-function qsbcompile {
-    qsbfile=`echo $1 | sed 's/-vulkan//'`
-    qsb --glsl 100es,120,150 --hlsl 50 --msl 12 -b -o ${qsbfile}.qsb $1
-    # qsb --qt6 -b -o ${qsbfile}.qsb $1
-} 
-
-qsbcompile arcshadow-vulkan.vert
-qsbcompile arcshadow-vulkan.frag