3dProject2022/ParticleHelper.cpp at main · FelixMathiasson/3dProject2022 · GitHub

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#include "Defines.h"
#include "ParticleHelper.h"


// Debug/ParticleVS.cso"
bool loadComputeShader(std::string name, ID3D11Device* device, ID3D11ComputeShader*& computeShader)
{
	std::string shaderData;
	std::ifstream reader;
	reader.open("x64/Debug/" + name, std::ios::binary | std::ios::ate);
	if (!reader.is_open())
	{
		std::cout << "ERROR! COULD NOT OPEN CS FILE!" << std::endl;
		return false;
	}

	reader.seekg(0, std::ios::end);
	shaderData.reserve(static_cast<unsigned int>(reader.tellg()));
	reader.seekg(0, std::ios::beg);

	shaderData.assign((std::istreambuf_iterator<char>(reader)),
		std::istreambuf_iterator<char>());
	if (FAILED(device->CreateComputeShader(shaderData.c_str(), shaderData.length(), nullptr, &computeShader)))
	{
		std::cerr << "ERROR! COULD NOT CREATE COMPUTE SHADER!" << std::endl;
		return false;
	}
	return true;
}

float Randomizer(float min, float max)
{
	if (min == max && min == 0) {
		return 0;
	}
	return ((float)(rand() % (int)((max - min) * 100) + (int)((min) * 100))) / 100;
}

bool CreateVertexConstantBuffer(ID3D11Device* device, ID3D11Buffer*& buffer, Camera& camera)
{
	D3D11_BUFFER_DESC CbDesc;
	CbDesc.ByteWidth = sizeof(VertexCb);
	CbDesc.Usage = D3D11_USAGE_DYNAMIC;
	CbDesc.BindFlags = D3D11_BIND_CONSTANT_BUFFER;
	CbDesc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
	CbDesc.MiscFlags = 0;
	CbDesc.StructureByteStride = 0;

	D3D11_SUBRESOURCE_DATA InitData;
	VertexCb vcb = {};
	vcb.projection.element = camera.GetPerspectiveMatrix();
	vcb.view.element = camera.GetViewMatrix();

	InitData.SysMemPitch = 0;
	InitData.SysMemSlicePitch = 0;
	InitData.pSysMem = &vcb;

	HRESULT hr = device->CreateBuffer(&CbDesc, &InitData, &buffer);
	if (FAILED(hr))
	{
		std::cout << "ERROR! COULD NOT CREATE CB PARTICLE!" << std::endl;
		return false;
	}

	return !FAILED(hr);
}

bool CreateGeometryConstantBuffer(ID3D11Device* device, ID3D11Buffer*& buffer)
{
	D3D11_BUFFER_DESC ConstantBufferDesc;
	ConstantBufferDesc.ByteWidth = sizeof(GeoCb);
	ConstantBufferDesc.Usage = D3D11_USAGE_DYNAMIC;
	ConstantBufferDesc.BindFlags = D3D11_BIND_CONSTANT_BUFFER;
	ConstantBufferDesc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
	ConstantBufferDesc.MiscFlags = 0;
	ConstantBufferDesc.StructureByteStride = 0;

	PixelCb pcb = {};

	pcb.ka = { 0.5f,0.5f,0.5f,1 };
	pcb.kd = { 1.f,1.f,1.f,0 };
	pcb.ks = { 1.f,1.f,1.f,0 };


	D3D11_SUBRESOURCE_DATA InitData;
	InitData.pSysMem = &pcb;
	InitData.SysMemPitch = 0;
	InitData.SysMemSlicePitch = 0;
	HRESULT hr = device->CreateBuffer(&ConstantBufferDesc, &InitData, &buffer);

	return FAILED(hr);
}

bool CreatePixelConstantBuffer(ID3D11Device* device, ID3D11Buffer*& buffer)
{

	D3D11_BUFFER_DESC ConstantBufferDesc;
	ConstantBufferDesc.ByteWidth = sizeof(PixelCb);
	ConstantBufferDesc.Usage = D3D11_USAGE_DYNAMIC;
	ConstantBufferDesc.BindFlags = D3D11_BIND_CONSTANT_BUFFER;
	ConstantBufferDesc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
	ConstantBufferDesc.MiscFlags = 0;
	ConstantBufferDesc.StructureByteStride = 0;

	PixelCb pcb = {};

	pcb.ka = { 0.5f,0.5f,0.5f,1 };
	pcb.kd = { 1.f,1.f,1.f,0 };
	pcb.ks = { 1.f,1.f,1.f,0 };

	D3D11_SUBRESOURCE_DATA InitData;
	InitData.pSysMem = &pcb;
	InitData.SysMemPitch = 0;
	InitData.SysMemSlicePitch = 0;
	HRESULT hr = device->CreateBuffer(&ConstantBufferDesc, &InitData, &buffer);

	return FAILED(hr);
}


bool CreateConstBuffer(ID3D11Device* device, ID3D11Buffer*& buffer, UINT size, constB* initData)
{
	D3D11_BUFFER_DESC ConstantBufferDesc;
	ConstantBufferDesc.ByteWidth = size;
	ConstantBufferDesc.Usage = D3D11_USAGE_DYNAMIC;
	ConstantBufferDesc.BindFlags = D3D11_BIND_CONSTANT_BUFFER;
	ConstantBufferDesc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
	ConstantBufferDesc.MiscFlags = 0;
	ConstantBufferDesc.StructureByteStride = 0;

	D3D11_SUBRESOURCE_DATA InitData;

	InitData.SysMemPitch = 0;
	InitData.SysMemSlicePitch = 0;
	InitData.pSysMem = &initData;

	HRESULT hr = device->CreateBuffer(&ConstantBufferDesc, &InitData, &buffer);
	if (FAILED(hr))
	{
		std::cout << "ERROR! COULD NOT CREATE CONST BUFFER FOR PARTICLES!" << std::endl;
		return false;
	}

	return !FAILED(hr);
}