Tutorial 12: Font Engine 연습문제

코다람쥐 2022. 9. 14. 13:09

To Do Exercises

1. Recompile the code and ensure you get a white "Hello" written to 100x100 on your screen as well as a yellow "Goodbye" beneath it.

2. Change the pixel color, location, and content of the sentences.

3. Create a third sentence structure and have it render also.

4. Comment out the blending calls in the GraphicsClass::Render function and set m_D3D->BeginScene(0.0f, 0.0f, 1.0f, 1.0f); in the GraphicsClass::Render function. This will show why blending is needed.

5. Add the blending calls back into the GraphicsClass::Render function and keep m_D3D->BeginScene(0.0f, 0.0f, 1.0f, 1.0f); in the GraphicsClass::Render function to see the difference.

1. 프로그램을 다시 컴파일하여 "Hello"라는 글자가 100, 100 위치에 나타나고 "Goodbye"라는 글자가 그 아래 생기는지 확인해 보십시오.

2. 문장의 색상, 위치, 내용을 바꿔 보십시오.

textclass.cpp

bool TextClass::Initialize(ID3D11Device* device, ID3D11DeviceContext* deviceContext, HWND hwnd, int screenWidth, int screenHeight,
	D3DXMATRIX baseViewMatrix)
{
.........................생략.........................
	result = UpdateSentence(m_sentence1, "Hi", 200, 100, 1.0f, 0.0f, 0.0f, deviceContext);
	if (!result)
	{
		return false;
	}
.........................생략.........................
	result = UpdateSentence(m_sentence2, "badbye", 200, 200, 0.0f, 1.0f, 0.0f, deviceContext);
	if (!result)
	{
		return false;
	}
.........................생략.........................
}

3. 세 번째 문장 구조체를 만들어 화면에 그려 보십시오.

textclass.h

class TextClass
{
..............생략.............
    SentenceType* m_sentence3;
};

textclass.cpp

bool TextClass::Initialize(ID3D11Device* device, ID3D11DeviceContext* deviceContext, 
			HWND hwnd, int screenWidth, int screenHeight, D3DXMATRIX baseViewMatrix)
{
............................................생략............................................
	result = InitializeSentence(&m_sentence3, 16, device);
	if (!result)
	{
		return false;
	}

	result = UpdateSentence(m_sentence3, "Yes, sir", 200, 300, 0.0f, 0.0f, 1.0f, deviceContext);
	if (!result)
	{
		return false;
	}
............................................생략............................................
}

void TextClass::Shutdown()
{
............................................생략............................................
	ReleaseSentence(&m_sentence3);
............................................생략............................................
}

bool TextClass::Render(ID3D11DeviceContext* deviceContext, D3DXMATRIX worldMatrix, D3DXMATRIX orthoMatrix)
{
............................................생략............................................
	result = RenderSentence(deviceContext, m_sentence3, worldMatrix, orthoMatrix);
	if (!result)
	{
		return false;
	}
............................................생략............................................
}

4. GraphicsClass::Render 함수에서 블렌딩과 관련된 호출을 주석 처리하고 m_D3D->BeginScene(0.0f, 0.0f, 1.0f, 1.0f); 로 고쳐 보십시오. 이렇게 하면 왜 블렌딩 처리가 필요한지 보여줄 것입니다.

graphicsclass.cpp

bool GraphicsClass::Render()
{
	D3DXMATRIX worldMatrix, viewMatrix, projectionMatrix, orthoMatrix;
	bool result;


	// Clear the buffers to begin the scene.
	m_D3D->BeginScene(0.0f, 0.0f, 1.0f, 1.0f);

	// Generate the view matrix based on the camera's position.
	m_Camera->Render();

	// Get the view, projection, and world matrices from the camera and D3D objects.
	m_Camera->GetViewMatrix(viewMatrix);
	m_D3D->GetWorldMatrix(worldMatrix);
	m_D3D->GetProjectionMatrix(projectionMatrix);
	m_D3D->GetOrthoMatrix(orthoMatrix);

	// Turn off the Z buffer to begin all 2D rendering.
	m_D3D->TurnZBufferOff();

	// Turn on the alpha blending before rendering the text.
	//m_D3D->TurnOnAlphaBlending();

	// Render the text strings.
	result = m_Text->Render(m_D3D->GetDeviceContext(), worldMatrix, orthoMatrix);
	if (!result)
	{
		return false;
	}

	// Turn off alpha blending after rendering the text.
	//m_D3D->TurnOffAlphaBlending();

	// Turn the Z buffer back on now that all 2D rendering has completed.
	m_D3D->TurnZBufferOn();

	// Present the rendered scene to the screen.
	m_D3D->EndScene();

	return true;
}

5. GraphicsClass::Render 함수에서 주석 처리된 블렌딩 호출을 주석 해제하고 m_D3D->BeginScene(0.0f, 0.0f, 1.0f, 1.0f); 로 고쳐서 무엇이 달라졌는지 확인해 보십시오.

graphicsclass.cpp

bool GraphicsClass::Render()
{
	D3DXMATRIX worldMatrix, viewMatrix, projectionMatrix, orthoMatrix;
	bool result;


	// Clear the buffers to begin the scene.
	m_D3D->BeginScene(0.0f, 0.0f, 1.0f, 1.0f);

	// Generate the view matrix based on the camera's position.
	m_Camera->Render();

	// Get the view, projection, and world matrices from the camera and D3D objects.
	m_Camera->GetViewMatrix(viewMatrix);
	m_D3D->GetWorldMatrix(worldMatrix);
	m_D3D->GetProjectionMatrix(projectionMatrix);
	m_D3D->GetOrthoMatrix(orthoMatrix);

	// Turn off the Z buffer to begin all 2D rendering.
	m_D3D->TurnZBufferOff();

	// Turn on the alpha blending before rendering the text.
	m_D3D->TurnOnAlphaBlending();

	// Render the text strings.
	result = m_Text->Render(m_D3D->GetDeviceContext(), worldMatrix, orthoMatrix);
	if (!result)
	{
		return false;
	}

	// Turn off alpha blending after rendering the text.
	m_D3D->TurnOffAlphaBlending();

	// Turn the Z buffer back on now that all 2D rendering has completed.
	m_D3D->TurnZBufferOn();

	// Present the rendered scene to the screen.
	m_D3D->EndScene();

	return true;
}

참고로 'yes, sir'는 배경색이랑 겹쳐서 안보임.