Add copy shader

QTProject/resources.qrc

@@ -5,6 +5,7 @@
         <file>subdivide.tcs</file>
         <file>subdivide.tes</file>
         <file>subdivide.vert</file>
+        <file>subdivision-copy.compute</file>
         <file>subdivision-edge.compute</file>
         <file>subdivision-vertex.compute</file>
         <file>subdivideRegular.tcs</file>

QTProject/subdivision-copy.compute

+#version 430 core
+
+layout  (local_size_x  =  1)  in;
+
+struct Vertex {
+    vec3 pos;
+    vec3 norm;
+    vec2 uv;
+};
+
+layout(std430, binding=0) readonly buffer Input {
+    Vertex vertices_in[];
+};
+
+layout(std430, binding=1) writeonly buffer Output {
+    Vertex vertices_out[];
+};
+
+void main(){
+    vertices_out[gl_GlobalInvocationID.x] = vertices_in[gl_GlobalInvocationID.x];
+}

QTProject/subdivision.cpp

@@ -10,6 +10,7 @@ Subdivision::Subdivision(QOpenGLFunctions_4_3_Core *f)
 
 Subdivision::~Subdivision()
 {
+    delete copyShader;
     delete edgeShader;
     delete vertexShader;
 }
@@ -21,7 +22,10 @@ QString Subdivision::formatTimeMeasurement(int time){
 }
 
 void Subdivision::init() {
-    QString source = QLatin1String(":/subdivision-edge.compute");
+    QString source = QLatin1String(":/subdivision-copy.compute");
+    copyShader = initComputeShaderProgram(source);
+
+    source = QLatin1String(":/subdivision-edge.compute");
     edgeShader = initComputeShaderProgram(source);
 
     source = QLatin1String(":/subdivision-vertex.compute");

QTProject/subdivision.h

@@ -51,6 +51,7 @@ private:
     QString formatTimeMeasurement(int time);
 
     QOpenGLFunctions_4_3_Core *f;
+    QOpenGLShaderProgram *copyShader;
     QOpenGLShaderProgram *edgeShader;
     QOpenGLShaderProgram *vertexShader;