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Multiple point lights

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This commit is contained in:
StratiX0
2024-03-28 10:56:57 +01:00
parent 16db21608a
commit e5c88797b0
17 changed files with 4143 additions and 208 deletions
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139
enginecustom/Lightshaderclass.cpp
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@@ -13,6 +13,8 @@ LightShaderClass::LightShaderClass()
m_matrixBuffer = 0;
m_cameraBuffer = 0;
m_lightBuffer = 0;
m_lightColorBuffer = 0;
m_lightPositionBuffer = 0;
}
@@ -66,15 +68,13 @@ void LightShaderClass::Shutdown()
}
bool LightShaderClass::Render(ID3D11DeviceContext* deviceContext, int indexCount, XMMATRIX worldMatrix, XMMATRIX viewMatrix, XMMATRIX projectionMatrix,
ID3D11ShaderResourceView* texture, XMFLOAT3 lightDirection, XMFLOAT4 ambientColor, XMFLOAT4 diffuseColor,
XMFLOAT3 cameraPosition, XMFLOAT4 specularColor, float specularPower)
ID3D11ShaderResourceView* texture, XMFLOAT4 diffuseColor[], XMFLOAT4 lightPosition[])
{
bool result;
// Set the shader parameters that it will use for rendering.
result = SetShaderParameters(deviceContext, worldMatrix, viewMatrix, projectionMatrix, texture, lightDirection, ambientColor, diffuseColor,
cameraPosition, specularColor, specularPower);
result = SetShaderParameters(deviceContext, worldMatrix, viewMatrix, projectionMatrix, texture, diffuseColor, lightPosition);
if(!result)
{
return false;
@@ -98,7 +98,8 @@ bool LightShaderClass::InitializeShader(ID3D11Device* device, HWND hwnd, WCHAR*
D3D11_SAMPLER_DESC samplerDesc;
D3D11_BUFFER_DESC matrixBufferDesc;
D3D11_BUFFER_DESC cameraBufferDesc;
D3D11_BUFFER_DESC lightBufferDesc;
D3D11_BUFFER_DESC lightColorBufferDesc;
D3D11_BUFFER_DESC lightPositionBufferDesc;
// Initialize the pointers this function will use to null.
@@ -237,6 +238,8 @@ bool LightShaderClass::InitializeShader(ID3D11Device* device, HWND hwnd, WCHAR*
return false;
}
// Setup the description of the camera dynamic constant buffer that is in the vertex shader.
cameraBufferDesc.Usage = D3D11_USAGE_DYNAMIC;
cameraBufferDesc.ByteWidth = sizeof(CameraBufferType);
@@ -252,17 +255,31 @@ bool LightShaderClass::InitializeShader(ID3D11Device* device, HWND hwnd, WCHAR*
return false;
}
// Setup the description of the light dynamic constant buffer that is in the pixel shader.
// Note that ByteWidth always needs to be a multiple of 16 if using D3D11_BIND_CONSTANT_BUFFER or CreateBuffer will fail.
lightBufferDesc.Usage = D3D11_USAGE_DYNAMIC;
lightBufferDesc.ByteWidth = sizeof(LightBufferType) + 12 ;
lightBufferDesc.BindFlags = D3D11_BIND_CONSTANT_BUFFER;
lightBufferDesc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
lightBufferDesc.MiscFlags = 0;
lightBufferDesc.StructureByteStride = 0;
// Setup the description of the dynamic constant buffer that is in the pixel shader.
lightColorBufferDesc.Usage = D3D11_USAGE_DYNAMIC;
lightColorBufferDesc.ByteWidth = sizeof(LightColorBufferType);
lightColorBufferDesc.BindFlags = D3D11_BIND_CONSTANT_BUFFER;
lightColorBufferDesc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
lightColorBufferDesc.MiscFlags = 0;
lightColorBufferDesc.StructureByteStride = 0;
// Create the constant buffer pointer so we can access the pixel shader constant buffer from within this class.
result = device->CreateBuffer(&lightColorBufferDesc, NULL, &m_lightColorBuffer);
if (FAILED(result))
{
return false;
}
// Setup the description of the dynamic constant buffer that is in the vertex shader.
lightPositionBufferDesc.Usage = D3D11_USAGE_DYNAMIC;
lightPositionBufferDesc.ByteWidth = sizeof(LightPositionBufferType);
lightPositionBufferDesc.BindFlags = D3D11_BIND_CONSTANT_BUFFER;
lightPositionBufferDesc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
lightPositionBufferDesc.MiscFlags = 0;
lightPositionBufferDesc.StructureByteStride = 0;
// Create the constant buffer pointer so we can access the vertex shader constant buffer from within this class.
result = device->CreateBuffer(&lightBufferDesc, NULL, &m_lightBuffer);
result = device->CreateBuffer(&lightPositionBufferDesc, NULL, &m_lightPositionBuffer);
if (FAILED(result))
{
return false;
@@ -274,6 +291,19 @@ bool LightShaderClass::InitializeShader(ID3D11Device* device, HWND hwnd, WCHAR*
void LightShaderClass::ShutdownShader()
{
// Release the light constant buffers.
if (m_lightColorBuffer)
{
m_lightColorBuffer->Release();
m_lightColorBuffer = 0;
}
if (m_lightPositionBuffer)
{
m_lightPositionBuffer->Release();
m_lightPositionBuffer = 0;
}
// Release the light constant buffer.
if (m_lightBuffer)
{
@@ -364,15 +394,14 @@ void LightShaderClass::OutputShaderErrorMessage(ID3D10Blob* errorMessage, HWND h
bool LightShaderClass::SetShaderParameters(ID3D11DeviceContext* deviceContext, XMMATRIX worldMatrix, XMMATRIX viewMatrix, XMMATRIX projectionMatrix,
ID3D11ShaderResourceView* texture, XMFLOAT3 lightDirection, XMFLOAT4 ambientColor, XMFLOAT4 diffuseColor,
XMFLOAT3 cameraPosition, XMFLOAT4 specularColor, float specularPower)
ID3D11ShaderResourceView* texture, XMFLOAT4 diffuseColor[], XMFLOAT4 lightPosition[])
{
HRESULT result;
D3D11_MAPPED_SUBRESOURCE mappedResource;
unsigned int bufferNumber;
MatrixBufferType* dataPtr;
LightBufferType* dataPtr2;
CameraBufferType* dataPtr3;
LightPositionBufferType* dataPtr2;
LightColorBufferType* dataPtr3;
// Transpose the matrices to prepare them for the shader.
worldMatrix = XMMatrixTranspose(worldMatrix);
@@ -410,51 +439,59 @@ bool LightShaderClass::SetShaderParameters(ID3D11DeviceContext* deviceContext, X
return false;
}
// Get a pointer to the data in the constant buffer.
dataPtr3 = (CameraBufferType*)mappedResource.pData;
// Copy the camera position into the constant buffer.
dataPtr3->cameraPosition = cameraPosition;
dataPtr3->padding = 0.0f;
// Unlock the camera constant buffer.
deviceContext->Unmap(m_cameraBuffer, 0);
// Set the position of the camera constant buffer in the vertex shader.
bufferNumber = 1;
// Now set the camera constant buffer in the vertex shader with the updated values.
deviceContext->VSSetConstantBuffers(bufferNumber, 1, &m_cameraBuffer);
// Set shader texture resource in the pixel shader.
deviceContext->PSSetShaderResources(0, 1, &texture);
// Lock the light constant buffer so it can be written to.
result = deviceContext->Map(m_lightBuffer, 0, D3D11_MAP_WRITE_DISCARD, 0, &mappedResource);
// Lock the light position constant buffer so it can be written to.
result = deviceContext->Map(m_lightPositionBuffer, 0, D3D11_MAP_WRITE_DISCARD, 0, &mappedResource);
if (FAILED(result))
{
return false;
}
// Get a pointer to the data in the constant buffer.
dataPtr2 = (LightBufferType*)mappedResource.pData;
dataPtr2 = (LightPositionBufferType*)mappedResource.pData;
// Copy the lighting variables into the constant buffer.
dataPtr2->ambientColor = ambientColor;
dataPtr2->diffuseColor = diffuseColor;
dataPtr2->lightDirection = lightDirection;
dataPtr2->specularColor = specularColor;
dataPtr2->specularPower = specularPower;
//dataPtr2->padding = 0.0f;
// Copy the light position variables into the constant buffer.
dataPtr2->lightPosition[0] = lightPosition[0];
dataPtr2->lightPosition[1] = lightPosition[1];
dataPtr2->lightPosition[2] = lightPosition[2];
dataPtr2->lightPosition[3] = lightPosition[3];
// Unlock the constant buffer.
deviceContext->Unmap(m_lightBuffer, 0);
deviceContext->Unmap(m_lightPositionBuffer, 0);
// Set the position of the light constant buffer in the pixel shader.
// Set the position of the constant buffer in the vertex shader.
bufferNumber = 1;
// Finally set the constant buffer in the vertex shader with the updated values.
deviceContext->VSSetConstantBuffers(bufferNumber, 1, &m_lightPositionBuffer);
// Set shader texture resource in the pixel shader.
deviceContext->PSSetShaderResources(0, 1, &texture);
// Lock the light color constant buffer so it can be written to.
result = deviceContext->Map(m_lightColorBuffer, 0, D3D11_MAP_WRITE_DISCARD, 0, &mappedResource);
if (FAILED(result))
{
return false;
}
// Get a pointer to the data in the constant buffer.
dataPtr3 = (LightColorBufferType*)mappedResource.pData;
// Copy the light color variables into the constant buffer.
dataPtr3->diffuseColor[0] = diffuseColor[0];
dataPtr3->diffuseColor[1] = diffuseColor[1];
dataPtr3->diffuseColor[2] = diffuseColor[2];
dataPtr3->diffuseColor[3] = diffuseColor[3];
// Unlock the constant buffer.
deviceContext->Unmap(m_lightColorBuffer, 0);
// Set the position of the constant buffer in the pixel shader.
bufferNumber = 0;
// Finally set the light constant buffer in the pixel shader with the updated values.
deviceContext->PSSetConstantBuffers(bufferNumber, 1, &m_lightBuffer);
// Finally set the constant buffer in the pixel shader with the updated values.
deviceContext->PSSetConstantBuffers(bufferNumber, 1, &m_lightColorBuffer);
return true;
}