debut triangle

enginecustom/Colorshaderclass.cpp

@@ -0,0 +1,203 @@
+////////////////////////////////////////////////////////////////////////////////
+// Filename: colorshaderclass.cpp
+////////////////////////////////////////////////////////////////////////////////
+#include "colorshaderclass.h"
+
+ColorShaderClass::ColorShaderClass()
+{
+	m_vertexShader = 0;
+	m_pixelShader = 0;
+	m_layout = 0;
+	m_matrixBuffer = 0;
+}
+
+
+ColorShaderClass::ColorShaderClass(const ColorShaderClass& other)
+{
+}
+
+
+ColorShaderClass::~ColorShaderClass()
+{
+}
+
+bool ColorShaderClass::Initialize(ID3D11Device* device, HWND hwnd)
+{
+	bool result;
+	wchar_t vsFilename[128];
+	wchar_t psFilename[128];
+	int error;
+
+
+	// Set the filename of the vertex shader.
+	error = wcscpy_s(vsFilename, 128, L"../Engine/color.vs");
+	if (error != 0)
+	{
+		return false;
+	}
+
+	// Set the filename of the pixel shader.
+	error = wcscpy_s(psFilename, 128, L"../Engine/color.ps");
+	if (error != 0)
+	{
+		return false;
+	}
+
+	// Initialize the vertex and pixel shaders.
+	result = InitializeShader(device, hwnd, vsFilename, psFilename);
+	if (!result)
+	{
+		return false;
+	}
+
+	return true;
+}
+
+void ColorShaderClass::Shutdown()
+{
+	// Shutdown the vertex and pixel shaders as well as the related objects.
+	ShutdownShader();
+
+	return;
+}
+
+bool ColorShaderClass::Render(ID3D11DeviceContext* deviceContext, int indexCount, XMMATRIX worldMatrix, XMMATRIX viewMatrix,
+	XMMATRIX projectionMatrix)
+{
+	bool result;
+
+
+	// Set the shader parameters that it will use for rendering.
+	result = SetShaderParameters(deviceContext, worldMatrix, viewMatrix, projectionMatrix);
+	if (!result)
+	{
+		return false;
+	}
+
+	// Now render the prepared buffers with the shader.
+	RenderShader(deviceContext, indexCount);
+
+	return true;
+}
+
+bool ColorShaderClass::InitializeShader(ID3D11Device* device, HWND hwnd, WCHAR* vsFilename, WCHAR* psFilename)
+{
+	HRESULT result;
+	ID3D10Blob* errorMessage;
+	ID3D10Blob* vertexShaderBuffer;
+	ID3D10Blob* pixelShaderBuffer;
+	D3D11_INPUT_ELEMENT_DESC polygonLayout[2];
+	unsigned int numElements;
+	D3D11_BUFFER_DESC matrixBufferDesc;
+
+
+	// Initialize the pointers this function will use to null.
+	errorMessage = 0;
+	vertexShaderBuffer = 0;
+	pixelShaderBuffer = 0;
+
+	// Compile the vertex shader code.
+	result = D3DCompileFromFile(vsFilename, NULL, NULL, "ColorVertexShader", "vs_5_0", D3D10_SHADER_ENABLE_STRICTNESS, 0,
+		&vertexShaderBuffer, &errorMessage);
+	if (FAILED(result))
+	{
+		// If the shader failed to compile it should have writen something to the error message.
+		if (errorMessage)
+		{
+			OutputShaderErrorMessage(errorMessage, hwnd, vsFilename);
+		}
+		// If there was  nothing in the error message then it simply could not find the shader file itself.
+		else
+		{
+			MessageBox(hwnd, vsFilename, L"Missing Shader File", MB_OK);
+		}
+
+		return false;
+	}
+
+	// Compile the pixel shader code.
+	result = D3DCompileFromFile(psFilename, NULL, NULL, "ColorPixelShader", "ps_5_0", D3D10_SHADER_ENABLE_STRICTNESS, 0,
+		&pixelShaderBuffer, &errorMessage);
+	if (FAILED(result))
+	{
+		// If the shader failed to compile it should have writen something to the error message.
+		if (errorMessage)
+		{
+			OutputShaderErrorMessage(errorMessage, hwnd, psFilename);
+		}
+		// If there was nothing in the error message then it simply could not find the file itself.
+		else
+		{
+			MessageBox(hwnd, psFilename, L"Missing Shader File", MB_OK);
+		}
+
+		return false;
+	}
+
+	// Create the vertex shader from the buffer.
+	result = device->CreateVertexShader(vertexShaderBuffer->GetBufferPointer(), vertexShaderBuffer->GetBufferSize(), NULL, &m_vertexShader);
+	if (FAILED(result))
+	{
+		return false;
+	}
+
+	// Create the pixel shader from the buffer.
+	result = device->CreatePixelShader(pixelShaderBuffer->GetBufferPointer(), pixelShaderBuffer->GetBufferSize(), NULL, &m_pixelShader);
+	if (FAILED(result))
+	{
+		return false;
+	}
+
+	// Create the vertex input layout description.
+	// This setup needs to match the VertexType stucture in the ModelClass and in the shader.
+	polygonLayout[0].SemanticName = "POSITION";
+	polygonLayout[0].SemanticIndex = 0;
+	polygonLayout[0].Format = DXGI_FORMAT_R32G32B32_FLOAT;
+	polygonLayout[0].InputSlot = 0;
+	polygonLayout[0].AlignedByteOffset = 0;
+	polygonLayout[0].InputSlotClass = D3D11_INPUT_PER_VERTEX_DATA;
+	polygonLayout[0].InstanceDataStepRate = 0;
+
+	polygonLayout[1].SemanticName = "COLOR";
+	polygonLayout[1].SemanticIndex = 0;
+	polygonLayout[1].Format = DXGI_FORMAT_R32G32B32A32_FLOAT;
+	polygonLayout[1].InputSlot = 0;
+	polygonLayout[1].AlignedByteOffset = D3D11_APPEND_ALIGNED_ELEMENT;
+	polygonLayout[1].InputSlotClass = D3D11_INPUT_PER_VERTEX_DATA;
+	polygonLayout[1].InstanceDataStepRate = 0;
+
+	// Get a count of the elements in the layout.
+	numElements = sizeof(polygonLayout) / sizeof(polygonLayout[0]);
+
+	// Create the vertex input layout.
+	result = device->CreateInputLayout(polygonLayout, numElements, vertexShaderBuffer->GetBufferPointer(),
+		vertexShaderBuffer->GetBufferSize(), &m_layout);
+	if (FAILED(result))
+	{
+		return false;
+	}
+
+	// Release the vertex shader buffer and pixel shader buffer since they are no longer needed.
+	vertexShaderBuffer->Release();
+	vertexShaderBuffer = 0;
+
+	pixelShaderBuffer->Release();
+	pixelShaderBuffer = 0;
+
+	// Setup the description of the dynamic matrix constant buffer that is in the vertex shader.
+	matrixBufferDesc.Usage = D3D11_USAGE_DYNAMIC;
+	matrixBufferDesc.ByteWidth = sizeof(MatrixBufferType);
+	matrixBufferDesc.BindFlags = D3D11_BIND_CONSTANT_BUFFER;
+	matrixBufferDesc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
+	matrixBufferDesc.MiscFlags = 0;
+	matrixBufferDesc.StructureByteStride = 0;
+
+	// Create the constant buffer pointer so we can access the vertex shader constant buffer from within this class.
+	result = device->CreateBuffer(&matrixBufferDesc, NULL, &m_matrixBuffer);
+	if (FAILED(result))
+	{
+		return false;
+	}
+
+	return true;
+}