rendernode example: do not rely on build-time shader compilation

There is no public intrastructure for this. Relying on the internal qmake
rule in qtdeclarative is wrong as it is not meant for public consumption
and is not available in out of tree examples in the installed Qt anyway.

Instead, ship the bytecode for now.

Task-number: QTBUG-56327
Change-Id: I19327aa880ad573560d1e9376f36c67aa509b51a
Reviewed-by: Andy Nichols <andy.nichols@qt.io>

examples/quick/scenegraph/rendernode/d3d12renderer.cpp

@@ -42,12 +42,10 @@
 #include <QQuickItem>
 #include <QQuickWindow>
 #include <QSGRendererInterface>
+#include <QFile>
 
 #if QT_CONFIG(d3d12)
 
-#include "vs_shader.hlslh"
-#include "ps_shader.hlslh"
-
 D3D12RenderNode::D3D12RenderNode(QQuickItem *item)
     : m_item(item)
 {
@@ -111,12 +109,25 @@ void D3D12RenderNode::init()
         { "COLOR", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, 8, D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 }
     };
 
+    QFile f(QStringLiteral(":/scenegraph/rendernode/shader_vert.cso"));
+    if (!f.open(QIODevice::ReadOnly)) {
+        qWarning("Failed to open file with vertex shader bytecode");
+        return;
+    }
+    QByteArray vshader_cso = f.readAll();
+    f.close();
+    f.setFileName(QStringLiteral(":/scenegraph/rendernode/shader_frag.cso"));
+    if (!f.open(QIODevice::ReadOnly)) {
+        qWarning("Failed to open file with fragment shader bytecode");
+        return;
+    }
+    QByteArray fshader_cso = f.readAll();
     D3D12_SHADER_BYTECODE vshader;
-    vshader.pShaderBytecode = g_VS_Simple;
-    vshader.BytecodeLength = sizeof(g_VS_Simple);
+    vshader.pShaderBytecode = vshader_cso.constData();
+    vshader.BytecodeLength = vshader_cso.size();
     D3D12_SHADER_BYTECODE pshader;
-    pshader.pShaderBytecode = g_PS_Simple;
-    pshader.BytecodeLength = sizeof(g_PS_Simple);
+    pshader.pShaderBytecode = fshader_cso.constData();
+    pshader.BytecodeLength = fshader_cso.size();
 
     D3D12_RASTERIZER_DESC rastDesc = {};
     rastDesc.FillMode = D3D12_FILL_MODE_SOLID;

examples/quick/scenegraph/rendernode/rendernode.pro

@@ -15,24 +15,10 @@ target.path = $$[QT_INSTALL_EXAMPLES]/quick/scenegraph/rendernode
 INSTALLS += target
 
 OTHER_FILES += \
-    main.qml \
-    shader.hlsl
+    main.qml
 
 qtConfig(d3d12) {
     HEADERS += d3d12renderer.h
     SOURCES += d3d12renderer.cpp
     LIBS += -ld3d12
-
-    VSPS = shader.hlsl
-    vshader.input = VSPS
-    vshader.header = vs_shader.hlslh
-    vshader.entry = VS_Simple
-    vshader.type = vs_5_0
-    pshader.input = VSPS
-    pshader.header = ps_shader.hlslh
-    pshader.entry = PS_Simple
-    pshader.type = ps_5_0
-
-    HLSL_SHADERS = vshader pshader
-    load(hlsl_bytecode_header)
 }

examples/quick/scenegraph/rendernode/rendernode.qrc

@@ -1,5 +1,7 @@
 <RCC>
     <qresource prefix="/scenegraph/rendernode">
         <file>main.qml</file>
+        <file>shader_vert.cso</file>
+        <file>shader_frag.cso</file>
     </qresource>
 </RCC>