rendering all patches from all Levels

QTProject/logcategories.cpp

@@ -3,3 +3,4 @@
 Q_LOGGING_CATEGORY(log_subdiv, "subdiv")
 Q_LOGGING_CATEGORY(log_subdiv_trace, "subdiv.trace")
 Q_LOGGING_CATEGORY(log_mesh, "mesh")
+Q_LOGGING_CATEGORY(log_mesh_render, "mesh.render")

QTProject/logcategories.h

@@ -7,5 +7,6 @@
 Q_DECLARE_LOGGING_CATEGORY(log_subdiv)
 Q_DECLARE_LOGGING_CATEGORY(log_subdiv_trace)
 Q_DECLARE_LOGGING_CATEGORY(log_mesh)
+Q_DECLARE_LOGGING_CATEGORY(log_mesh_render)
 
 #endif

QTProject/mesh.cpp

@@ -459,14 +459,25 @@ void Mesh::renderMesh(QOpenGLShaderProgram *shader, int index, int subdivision,
 
     // Draw Vertex Array
     if(regular){
-        if (!entry->indices_regular.isEmpty()) {
-            f->glBindBuffer(GL_ARRAY_BUFFER, entry->VB_handle);
+        for (int depth = 0; depth < subdivision+1; ++depth) {
+            std::shared_ptr<SubdivEntry> depthEntry = entries[index].buffers[depth];
+            if (!depthEntry->indices_regular.isEmpty()) {
+
+                std::shared_ptr<SubdivEntry> depthEntryMinusOne = entries[index].buffers[depth];
+                if(depth > 0){
+                    depthEntryMinusOne = entries[index].buffers[depth-1];
+                }
+
+                shader->setUniformValue("depth",depth);
+
+                f->glBindBuffer(GL_ARRAY_BUFFER, depthEntryMinusOne->VB_handle);
                 f->glVertexAttribPointer(positionIndex, 3, GL_FLOAT, GL_FALSE, sizeof(Vertex), 0);
 
-            f->glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, entry->IB_regular_handle);
+                f->glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, depthEntry->IB_regular_handle);
                 f->glPatchParameteri(GL_PATCH_VERTICES, 12);
-            f->glDrawElements(GL_PATCHES, entry->indices_regular.size(), GL_UNSIGNED_INT, 0);
-            //qCDebug(log_mesh)<<"Patches "<<entry->indices_regular.size()/12<<" Subdivision Level: "<< subdivision;
+                f->glDrawElements(GL_PATCHES, depthEntry->indices_regular.size(), GL_UNSIGNED_INT, 0);
+                qCDebug(log_mesh)<<"Patches "<<entry->indices_regular.size()/12<<" Subdivision Level: "<< subdivision;
+            }
         }
     } else {
         if (!entry->indices_irregular.isEmpty()) {

QTProject/subdivide.tcs

@@ -5,7 +5,6 @@ layout(vertices = 3) out;
 in vec3 vPosition[];
 out vec3 tcPosition[];
 
-uniform float subdiv;
 
 void main()
 {

QTProject/subdivideRegular.tcs

@@ -6,17 +6,19 @@ in vec3 vPosition[];
 out vec3 tcPosition[];
 
 uniform int subdiv;
+uniform int depth;
+
 
 void main()
 {
     tcPosition[gl_InvocationID] = vPosition[gl_InvocationID];
 
-    float tesselation = subdiv;
+    float tesselation = subdiv-depth;
 
     gl_TessLevelOuter[0] = exp2(tesselation);
     gl_TessLevelOuter[1] = exp2(tesselation);
     gl_TessLevelOuter[2] = exp2(tesselation);
 
-    gl_TessLevelInner[0] = exp2(tesselation+1);
+    gl_TessLevelInner[0] = exp2(tesselation);
 
 }

QTProject/subdivision.cpp

@@ -68,7 +68,7 @@ void Subdivision::subdivide(Mesh *mesh, int level) {
     input.index_buffer = entry->indices_irregular;
 
     if (input.index_buffer.isEmpty()) {
-        current_mesh->update(input.vb_handle, input.vertex_buffer, input.index_buffer, entry->indices_regular);
+      //  current_mesh->update(input.vb_handle, input.vertex_buffer, input.index_buffer, entry->indices_regular);
     } else {
         Tables tables = precomputeTables(input);
         Result result = runShader(input, tables);