VkeMesh.cpp

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/* Contact chebert@nvidia.com (Chris Hebert) for feedback */

#include "VkeMesh.h"
#include "VKSFile.h"

VkeMesh::VkeMesh():
m_id(0),
m_material_id(-1)
{
}

VkeMesh::VkeMesh(const ID &inID) :
m_id(inID),
m_material_id(-1){
}

VkeMesh::~VkeMesh()
{
}

void VkeMesh::initVKBuffers(){

	m_vbo.initVKBufferData();
	m_ibo.initVKBufferData();

}

void VkeMesh::initFromMesh(VKSFile *inFile, VKSMeshRecord *inMesh){
	m_vertex_count = inMesh->vertexCount;
	m_index_count = inMesh->indexCount;
	m_material_id = inMesh->materialID;

}

void VkeMesh::initFromMesh(Mesh * const inMesh){

	if (!inMesh) return;

	m_vertex_count = inMesh->getVertexCount();
	m_index_count = inMesh->getIndexCount();
	m_material_id = inMesh->getMaterialID();

	Vec4f *nmls = inMesh->getNormals();
	Vec4f *vtxs = inMesh->getVertices();
	uint32_t *idxs = inMesh->getIndices();
	Vec2f *uvs = inMesh->getUVs();

	size_t dataSize = m_vertex_count * sizeof(VertexObject);

	m_vbo.initBackingStore(dataSize);

	float *vData = m_vbo.getBackingStore();

	uint32_t cmpCount = 0;
	for (uint32_t i = 0; i < m_vertex_count; ++i){
		vData[cmpCount++] = vtxs[i].m_data[0];
		vData[cmpCount++] = vtxs[i].m_data[1];
		vData[cmpCount++] = vtxs[i].m_data[2];
		vData[cmpCount++] = vtxs[i].m_data[3];
		vData[cmpCount++] = nmls[i].m_data[0];
		vData[cmpCount++] = nmls[i].m_data[1];
		vData[cmpCount++] = nmls[i].m_data[2];
		vData[cmpCount++] = nmls[i].m_data[3];
		vData[cmpCount++] = uvs[i].m_data[0];
		vData[cmpCount++] = uvs[i].m_data[1];
	}

	dataSize = m_index_count * sizeof(uint32_t);

	m_ibo.initBackingStore(dataSize);

	uint32_t *iData = m_ibo.getBackingStore();
	for (uint32_t i = 0; i < m_index_count; ++i){
		iData[i] = idxs[i];
	}

}

void VkeMesh::bind(VkCommandBuffer *inCmd){
	m_vbo.bind(inCmd);
	m_ibo.bind(inCmd);
}

void VkeMesh::initBindCommand(VkCommandPool *inPool,VkQueue *inQueue){
	VkCommandBufferAllocateInfo cmdBufInfo;
	VkCommandBuffer cmdBuf;
    VkFence nullFence = VK_NULL_HANDLE;


	memset(&cmdBufInfo, 0, sizeof(cmdBufInfo));
	cmdBufInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
	cmdBufInfo.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
	cmdBufInfo.commandPool = *inPool;
	cmdBufInfo.commandBufferCount = 1;

	VKA_CHECK_ERROR(vkAllocateCommandBuffers(getDefaultDevice(), &cmdBufInfo, &cmdBuf), "Could not create command buffer for init.\n");


	VkCommandBufferBeginInfo cmdBegin;
	memset(&cmdBegin, 0, sizeof(cmdBegin));
	cmdBegin.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
	cmdBegin.flags = 0;

	VkDeviceSize ofst = 0;
	VKA_CHECK_ERROR(vkBeginCommandBuffer(cmdBuf, &cmdBegin), "Could not begin command buffer.\n");
	m_vbo.bind(&cmdBuf);
	m_ibo.bind(&cmdBuf);
	VKA_CHECK_ERROR(vkEndCommandBuffer(cmdBuf), "Could not end command buffer for draw command.\n");

	VkSubmitInfo subInfo;
	memset(&subInfo, 0, sizeof(subInfo));
	subInfo.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
	subInfo.commandBufferCount = 1;
	subInfo.pCommandBuffers = &cmdBuf;

	VKA_CHECK_ERROR(vkQueueSubmit(*inQueue, 1, &subInfo, nullFence), "Could not submit bind command buffer.\n");

	VKA_CHECK_ERROR(vkQueueWaitIdle(*inQueue), "Could not wait for idle graphics queue.\n");


}

void VkeMesh::initDrawCommand(VkCommandBuffer *inCommand){

	uint32_t firstVert = 0;
	uint32_t firstIdx = 0;

#if USE_SINGLE_VBO
	firstVert = m_first_vertex;
	firstIdx = m_first_index;
#endif

	VkDrawIndexedIndirectCommand testCmd;
	testCmd.firstIndex = firstIdx;
	testCmd.firstInstance = 0;
	testCmd.indexCount = m_index_count;
	testCmd.instanceCount = 1;
	testCmd.vertexOffset = firstVert;

	vkCmdDrawIndexed(*inCommand, m_index_count,1, firstVert, firstIdx, 0);
	//vkCmdDrawIndexedIndirect(*inCommand,)

}

void VkeMesh::initDrawCommand(VkCommandBuffer *inCommand, VkBuffer &inIndirectBuffer, uint32_t inIndex){
	VkDeviceSize sz = sizeof(VkDrawIndexedIndirectCommand);
	VkDeviceSize ofst = sz*inIndex;

	vkCmdDrawIndexedIndirect(*inCommand, inIndirectBuffer, ofst, 1, sz);

}


void VkeMesh::draw(VkCommandBuffer *inCommand){
	vkCmdDrawIndexed(*inCommand, 0, m_index_count, 0, 0, 1);
}

VkeMesh::List::List(){}
VkeMesh::List::~List(){}

VkeMesh::ID VkeMesh::List::nextID(){
	VkeMesh::ID outID;
	if (m_deleted_keys.size() == 0) return m_data.size();
	outID = m_deleted_keys.back();
	m_deleted_keys.pop_back();	
	return outID;
}

uint32_t VkeMesh::List::count(){
	return m_data.size();
}

VkeMesh *VkeMesh::List::newMesh(){
	VkeMesh::ID id = nextID();
	return newMesh(id);
}

VkeMesh *VkeMesh::List::newMesh(const VkeMesh::ID &inID){
	VkeMesh *outMesh = new VkeMesh(inID);
	m_data[inID] = outMesh;
	return outMesh;
}

VkeMesh *VkeMesh::List::newMesh(const VkeMesh::ID &inID, VKSFile *inFile,VKSMeshRecord *inData){
	VkeMesh *outMesh = newMesh(inID);
	if (!outMesh) return NULL;
	outMesh->initFromMesh(inFile, inData);
	return outMesh;
}

VkeMesh *VkeMesh::List::newMesh(const VkeMesh::ID &inID, Mesh * const inMesh){
	VkeMesh *outMesh = newMesh(inID);
	if (!outMesh) return NULL;
	outMesh->initFromMesh(inMesh);
	return outMesh;
}

void VkeMesh::List::addMesh(VkeMesh * const inMesh){
	VkeMesh::ID id = nextID();
	m_data[id] = inMesh;
}

VkeMesh *VkeMesh::List::getMesh(const VkeMesh::ID &inID){
	return m_data[inID];
}