[SOLVED] How to Render Mesh Dynamic?

[rohit.gonsalves]

Hello There,

I am trying following code to use and render MeshDynamic. But I am not able to render it. What could be the problem?

//There are my declarations

MeshDynamicPtr m_objMeshDynamic;
MeshDynamic::Attribute m_objMeshDynamicAttributes[1];
MaterialPtr m_objMaterial;

Here is an init method

m_objMeshDynamicAttributes[0].offset = 0;
m_objMeshDynamicAttributes[0].type = MeshDynamic::TYPE_FLOAT;
m_objMeshDynamicAttributes[0].size = 3;

m_objMeshDynamic = MeshDynamic::create(MeshDynamic::DYNAMIC_ALL);

m_objMeshDynamic->setVertexFormat(m_objMeshDynamicAttributes, 1);
m_objMeshDynamic->allocateVertex(3);
m_objMeshDynamic->allocateIndices(3);

m_objMeshDynamic->clearVertex();
m_objMeshDynamic->clearIndices();

//Vertex 1:
m_objMeshDynamic->addVertexFloat4(0, 10, 10, 10);

//Vertex 2: 
m_objMeshDynamic->addVertexFloat4(0, -10, 10, 10);

//Vertex 3: 
m_objMeshDynamic->addVertexFloat4(0, 10, 10, -10);

m_objMeshDynamic->addTriangles(1);

//front
m_objMeshDynamic->addIndex(0);
m_objMeshDynamic->addIndex(2);
m_objMeshDynamic->addIndex(1);

m_objMeshDynamic->flushVertex();
m_objMeshDynamic->flushIndices();

m_objMaterial = Materials::findBaseMaterial("mesh_base");

In the render method

    RenderState::saveState();
	RenderState::clearStates();
	RenderState::flushStates();

	RenderState::setMaterial(m_objMaterial);
	RenderState::setPolygonCull(RenderState::CULL_NONE);

	m_objMeshDynamic->bind();

	m_objMeshDynamic->render(MeshDynamic::MODE_TRIANGLES, MeshDynamic::FLUSH_ALL);
	
	m_objMeshDynamic->unbind();

	RenderState::restoreState();

Nothing is visible. Am I doing something wrong. Or I mapped wrong perception between MeshDynamic and DX11 calls that might be called behind?

Please advise.

Rohit

Edited August 22, 2020 by rohit.gonsalves
Changed the topic to solved.

[devrom]

Hello Rohit,

1. Maybe you should check if you are using addTriangles correctly. After reading the documentation of the other add* methods I think you do not need to use this here.

2. It is possible that you have to write a custom shader for your vertex format. For example the documentation of ObjectDynamic contains this:

Quote

ObjectDynamic class requires a custom shader for rendering, no built-in shaders are available.

Maybe the mesh_base material can not handle this.

Best regards

[rohit.gonsalves]

Thank you for pointing the mistake in the code above @ipg_rom.

I could able to get it work. I have created an ObjectExtern and in the render call for passes, it is using the custom deferred material and rendering mesh dynamic.

Rohit

Edited August 22, 2020 by rohit.gonsalves