C++ MEngine::getRenderingContext方法代码示例

void MaratisPlayer::graphicLoop(void)
{
	MWindow * window = MWindow::getInstance();
	MEngine * engine = MEngine::getInstance();
	MRenderingContext * render = engine->getRenderingContext();

	// game
	MGame * game = engine->getGame();
	if(game)
	{
		if(game->isRunning())
		{
			render->disableScissorTest();
			render->setViewport(0, 0, window->getWidth(), window->getHeight());
			game->draw();
		}
		else
		{
			render->clear(M_BUFFER_COLOR);
		}
	}
	else
	{
		render->clear(M_BUFFER_COLOR);
	}
}

    void Atlas::Generate(bool clear)
    {
	m_Atlas.create(M_UBYTE, m_Width, m_Height, m_BPP);
	unsigned char col[]= {255, 255, 255, 0};
	for(uint32 x = 0; x < m_Width; ++x)
	    for(uint32 y = 0; y < m_Height; ++y) 
		m_Atlas.writePixel(x, y, col);

	for(imageMapIter iImage = m_Images.begin(); 
	    iImage != m_Images.end(); 
	    iImage++)
	    WriteImage(iImage->second);

	MEngine* engine = MEngine::getInstance();
	MRenderingContext* render = engine->getRenderingContext();
	
	if(m_TextureID == 0)
	    render->createTexture(&m_TextureID);

	render->bindTexture(m_TextureID);
	render->sendTextureImage(&m_Atlas, false, 1, 0);

	if(clear)
	{
	    // remove images
            delete [] m_Layout;
            m_Layout = NULL;
        }
    }

void MShaderRef::update(void)
{
	MEngine * engine = MEngine::getInstance();
	MLevel * level = engine->getLevel();
	MRenderingContext * render = engine->getRenderingContext();

	char * text = readTextFile(getFilename());
	if(text)
	{
		// gen shader if null
		if(m_shaderId == 0)
		{
			switch(m_type)
			{
			case M_SHADER_VERTEX:
				render->createVertexShader(&m_shaderId);
				break;
			case M_SHADER_PIXEL:
				render->createPixelShader(&m_shaderId);
				break;
			}
		}

		// send shader source
		render->sendShaderSource(m_shaderId, text);
		SAFE_FREE(text);

		MFXManager * FXManager = level->getFXManager();

		unsigned int i;
		unsigned int size = FXManager->getFXRefsNumber();
		for(i=0; i<size; i++)
		{
			MFXRef * FXRef = FXManager->getFXRef(i);
			if((FXRef->getPixelShaderRef() == this) || (FXRef->getVertexShaderRef() == this))
			{
				unsigned int FXId = FXRef->getFXId();
				render->updateFX(FXId);
			}
		}
	}
}

    void Atlas::Select()
    {
	if(g_Selected == this)
	    return;
	MEngine* engine = MEngine::getInstance();
	MRenderingContext* render = engine->getRenderingContext();
	
	Renderer::Flush();

	render->enableTexture();
	render->setBlendingMode(M_BLENDING_ALPHA);
	render->enableBlending();
	
	if(m_TextureID != 0)
	{
	    render->bindTexture(m_TextureID);
	    //render->sendTextureImage(&m_Atlas, false, 1, 0);
	}
	g_Selected = this;
    }

void MTextureRef::update(void)
{
    M_PROFILE_SCOPE(MTextureRef::update);
	MEngine * engine = MEngine::getInstance();
	MRenderingContext * render = engine->getRenderingContext();

	MImage image;
	if(engine->getImageLoader()->loadData(getFilename(), &image))
	{
		if(m_textureId == 0)
			render->createTexture(&m_textureId);

		m_components = image.getComponents();
		m_width = image.getWidth();
		m_height = image.getHeight();
				
		// send texture image
		render->bindTexture(m_textureId);
		render->sendTextureImage(&image, isMipmapEnabled(), 1, 0);
	}
}

void draw(void)
{
	MWindow * window = MWindow::getInstance();
	MEngine * engine = MEngine::getInstance();
	MRenderingContext * render = engine->getRenderingContext();
	MGame * game = engine->getGame();

	// set basic viewport
	render->disableScissorTest();
	render->setViewport(0, 0, window->getWidth(), window->getHeight());

	if(game)
	{
		if(game->isRunning())
		{
			game->draw();
		}
	}

	window->swapBuffer();
}

    void Flush()
    {
	g_CurrentColour.set(255, 255, 255, 255);
	if(g_Cnt == 0) return;

	MEngine* engine = MEngine::getInstance();
	MRenderingContext* render = engine->getRenderingContext();
	MSystemContext* system = engine->getSystemContext();
	
	unsigned int w, h;
	system->getScreenSize(&w, &h);
	
	// set up the "camera"
	render->setViewport(0, 0, w, h);
	render->setMatrixMode(M_MATRIX_PROJECTION);
	render->loadIdentity();
	render->setOrthoView(0, w, h, 0, 1.0f, -1.0f);
	render->setMatrixMode(M_MATRIX_MODELVIEW);
	render->loadIdentity();

	// set up arrays
	render->enableVertexArray();
	render->enableTexCoordArray();
	render->enableColorArray();

	render->setVertexPointer(M_FLOAT, 3, g_Vertices);
	render->setTexCoordPointer(M_FLOAT, 2, g_UVs);
	render->setColorPointer(M_UBYTE, 4, g_Colours);

	render->disableCullFace();
	render->disableDepthTest();

	render->drawArray(M_PRIMITIVE_TRIANGLES, 0, g_Cnt * 6);

	g_Cnt = 0;

	g_Selected = NULL;
    }

void MFixedRenderer::drawDisplay(MSubMesh * subMesh, MDisplay * display, MVector3 * vertices, MVector3 * normals, MColor * colors)
{
    M_PROFILE_SCOPE(MFixedRenderer::drawDisplay);
	MEngine * engine = MEngine::getInstance();
	MRenderingContext * render = engine->getRenderingContext();
	
	
	render->setColor4(MVector4(1, 1, 1, 1));
	

	// get material
	MMaterial * material = display->getMaterial();
	{
		float opacity = material->getOpacity();
		if(opacity <= 0.0f)
			return;
		
		// data
		M_TYPES indicesType = subMesh->getIndicesType();
		void * indices = subMesh->getIndices();
		MVector2 * texCoords = subMesh->getTexCoords();

		// begin / size
		unsigned int begin = display->getBegin();
		unsigned int size = display->getSize();
		
		// get properties
		M_PRIMITIVE_TYPES primitiveType = display->getPrimitiveType();
		M_BLENDING_MODES blendMode = material->getBlendMode();
		M_CULL_MODES cullMode = display->getCullMode();
		MVector3 * diffuse = material->getDiffuse();
		MVector3 * specular = material->getSpecular();
		MVector3 * emit = material->getEmit();
		float shininess = material->getShininess();
		
		// get current fog color
		MVector3 currentFogColor;
		render->getFogColor(&currentFogColor);
		
		// set cull mode
		if(cullMode == M_CULL_NONE){
			render->disableCullFace();
		}
		else{
			render->enableCullFace();
			render->setCullMode(cullMode);
		}
		
		// texture passes
		unsigned int texturesPassNumber = MIN(8, material->getTexturesPassNumber());
		
		// set blending mode
		render->setBlendingMode(blendMode);
		
		// alpha test
		if(blendMode != M_BLENDING_ALPHA && texturesPassNumber > 0)
		{
			MTexturePass * texturePass = material->getTexturePass(0);
			MTexture * texture = texturePass->getTexture();
			if(texture)
			{
				if(texture->getTextureRef()->getComponents() > 3)
					render->setAlphaTest(0.5f);
			}
		}
		
		// set fog color depending on blending
		switch(blendMode)
		{
			case M_BLENDING_ADD:
			case M_BLENDING_LIGHT:
				render->setFogColor(MVector3(0, 0, 0));
				break;
			case M_BLENDING_PRODUCT:
				render->setFogColor(MVector3(1, 1, 1));
				break;
		}
		
		// fixed pipeline
		{
			// no FX
			render->bindFX(0);
			
			// Vertex
			render->enableVertexArray();
			render->setVertexPointer(M_FLOAT, 3, vertices);
			
			// Normal
			if(normals)
			{
				render->enableNormalArray();
				render->setNormalPointer(M_FLOAT, normals);
			}
			
			// Color
			if(colors)
			{
				render->disableLighting();
				render->enableColorArray();
				render->setColorPointer(M_UBYTE, 4, colors);
//.........这里部分代码省略.........

bool exportFontBin(const char * filename, MFont * font)
{
	if(! font)
		return false;

	MEngine * engine = MEngine::getInstance();
	MRenderingContext * render = engine->getRenderingContext();

	// read image
	MImage image;
	render->bindTexture(font->getTextureId());
	render->getTexImage(0, &image);
	
	unsigned int width = image.getWidth();
	unsigned int height = image.getHeight();

	if(width == 0 && height == 0)
	{
		printf("Error : unable to create image font for %s\n", filename);
		return false;
	}

	// create file
	FILE * file = fopen(filename, "wb");
	if(! file)
	{
		printf("Error : can't create file %s\n", filename);
		return false;
	}
	
	// bin
	fwrite(M_FONT_HEADER, sizeof(char), 8, file);

	// version
	int version = 1;
	fwrite(&version, sizeof(int), 1, file);

	// font size
	unsigned int fontSize = font->getFontSize();
	fwrite(&fontSize, sizeof(int), 1, file);

	// write image
	{
		fwrite(&width, sizeof(int), 1, file);
		fwrite(&height, sizeof(int), 1, file);

		unsigned char color[4];
		unsigned int x, y;
		for(y=0; y<height; y++)
		{
			for(x=0; x<width; x++)
			{
				image.readPixel(x, y, color);
				fwrite(&color[3], sizeof(char), 1, file);
			}
		}
	}

	// write characters infos
	{
		map <unsigned int, MCharacter> * characters = font->getCharacters();

		// size
		unsigned int size = font->getCharactersNumber();
		fwrite(&size, sizeof(int), 1, file);

		// characters
		map <unsigned int, MCharacter>::iterator
			mit (characters->begin()),
			mend(characters->end());

		for(;mit!=mend;++mit)
		{
			unsigned int charCode = mit->first;
			MCharacter * character = &mit->second;

			MVector2 pos = character->getPos();
			MVector2 offset = character->getOffset();
			MVector2 scale = character->getScale();
			float xadvance = character->getXAdvance();

			fwrite(&charCode, sizeof(int), 1, file);
			fwrite(&pos, sizeof(float), 2, file);
			fwrite(&offset, sizeof(float), 2, file);
			fwrite(&scale, sizeof(float), 2, file);
			fwrite(&xadvance, sizeof(float), 1, file);
		}
	}

	fclose(file);
	return true;
}

//.........这里部分代码省略.........
			continue;

		// max y
		max_y = MAX(max_y, slot->bitmap.rows);

		if((pen_x + slot->bitmap.width + space) > width)
		{
			pen_x = space;
			pen_y += max_y + space;
			height += max_y + space;
			max_y = 0;
		}

		// increment pen position 
		pen_x += slot->bitmap.width + space; 
	}

	if(height == 0)
	{
		printf("ERROR Load Font : unable to create font texture\n");
		FT_Done_FreeType(library);
		delete [] file_base;
		return false;
	}


	// create image
	height = getNextPowerOfTwo(height);
	image.create(M_UBYTE, width, height, 4);
	memset(image.getData(), 0, image.getSize()*sizeof(char));


	// init font
	font->setTextureWidth(width);
	font->setTextureHeight(height);


	// create font texture
	max_y = 0;
	slot = face->glyph;
	pen_x = space; pen_y = space; 
	for(n = 0; n<max_code; n++)
	{
		// load glyph image into the slot (erase previous one)
		error = FT_Load_Char(face, n, FT_LOAD_RENDER | FT_LOAD_NO_HINTING);

		if(error) 
			continue;

		if(FT_Get_Char_Index(face, n) == 0)
			continue;

		// max y
		max_y = MAX(max_y, slot->bitmap.rows);
		
		if((pen_x + slot->bitmap.width + space) > (int)image.getWidth()){
			pen_x = space;
			pen_y += max_y + space;
		}

		// get character properties
		float xAdvance = (slot->advance.x >> 6) / ((float)size);
		MVector2 offset = MVector2((float)slot->bitmap_left - 1, - (float)slot->bitmap_top - 1) / ((float)size);
		MVector2 pos = MVector2((float)(pen_x-1) / (float)width, (float)(pen_y-1) / (float)height);
		MVector2 scale = MVector2((float)(slot->bitmap.width+2) / (float)width, (float)(slot->bitmap.rows+2) / (float)height);

		// set character
		font->setCharacter(n, MCharacter(xAdvance, offset, pos, scale));

		// draw to image
		drawBitmap(&image, &slot->bitmap, pen_x, pen_y);

		// increment pen position 
		pen_x += slot->bitmap.width + space; 
	} 


	// send texture
	MEngine * engine = MEngine().getInstance();
	MRenderingContext * render = engine->getRenderingContext();
	
	// gen texture id
	unsigned int textureId = font->getTextureId();
	if(textureId == 0)
	{
		render->createTexture(&textureId);
		font->setTextureId(textureId);
	}
	
	// send texture image
	render->bindTexture(textureId);
	render->setTextureUWrapMode(M_WRAP_REPEAT);
	render->setTextureVWrapMode(M_WRAP_REPEAT);
	render->sendTextureImage(&image, 0, 1, 0);

	// finish
	FT_Done_FreeType(library);
	delete [] file_base;
	return true;
}

// main
int main(int argc, char **argv)
{
	setlocale(LC_NUMERIC, "C");


	// get engine (first time call onstructor)
	MEngine * engine = MEngine::getInstance();

	// get window (first time call onstructor)
	MWindow * window = MWindow::getInstance();

	// create window
	window->create("Maratis", 1024,768, 32, false);

	// set current directory
	char rep[256];
	getRepertory(rep, argv[0]);
	window->setCurrentDirectory(rep);

	// get Maratis (first time call onstructor)
	Maratis * maratis = Maratis::getInstance();
	MRenderingContext * render = engine->getRenderingContext();

	// init gui
	MGui * gui = MGui::getInstance();
	gui->setRenderingContext(render);
	gui->addFont(new MGuiTextureFont("font/default.tga"));

	// init MaratisUI
	window->setPointerEvent(MaratisUI::windowEvents);

	// logo
	{
		MImage image;
		if(! M_loadImage("gui/Title.png", &image))
			return 0;

		render->createTexture(&logoTextureId);
		render->bindTexture(logoTextureId);
		render->sendTextureImage(&image, false, false, false);

		// clear window
		draw();

		MGuiText text("LOADING", MVector2(480, 280), 16, MVector4(1, 1, 1, 1));
		text.draw();

		window->swapBuffer();
	}

	// load project
	if(argc > 1)
    {
		maratis->loadProject(argv[1]);
	}

	// time
	unsigned int frequency = 60;
	unsigned long previousFrame = 0;
	unsigned long startTick = window->getSystemTick();

	int f = 0;
	int t = 0;
	
	
	// on events
	while(window->isActive())
	{
		// on events
		if(window->onEvents())
		{
			// compute target tick
			unsigned long currentTick = window->getSystemTick();

			unsigned long tick = currentTick - startTick;
			unsigned long frame = (unsigned long)(tick * (frequency * 0.001f));

			// update elapsed time
			unsigned int i;
			unsigned int steps = (unsigned int)(frame - previousFrame);

			if(window->getFocus())
			{
				// don't wait too much
				if(steps >= (frequency/2))
				{
					update();
					draw();
					previousFrame += steps;
					continue;
				}
				
				// update
				for(i=0; i<steps; i++)
				{
					update();
					previousFrame++;
					t++;
					if(t == frequency)
//.........这里部分代码省略.........

bool M_loadBinFont(const char * filename, void * data)
{
	// open file
	FILE * file = fopen(filename, "rb");
	if(! file)
	{
		printf("Error : can't read file %s\n", filename);
		return false;
	}

	// bin
	char header[8];
	fread(header, sizeof(char), 8, file);

	if(strcmp(header, "MFONT") != 0)
		return false;

	// version
	int version;
	fread(&version, sizeof(int), 1, file);

	// font size
	unsigned int fontSize;
	fread(&fontSize, sizeof(int), 1, file);

	// init font
	MFont * font = (MFont *)data;
	font->setFontSize(fontSize);


	// create image
	{
		unsigned int width, height;
		fread(&width, sizeof(int), 1, file);
		fread(&height, sizeof(int), 1, file);

		font->setTextureWidth(width);
		font->setTextureHeight(height);

		MImage image;
		image.create(M_UBYTE, width, height, 4);

		unsigned char color[4] = {255, 255, 255, 0};
		unsigned int x, y;
		for(y=0; y<height; y++)
		{
			for(x=0; x<width; x++)
			{
				fread(&color[3], sizeof(char), 1, file);
				image.writePixel(x, y, color);
			}
		}

		MEngine * engine = MEngine().getInstance();
		MRenderingContext * render = engine->getRenderingContext();
		
		// gen texture id
		unsigned int textureId = font->getTextureId();
		if(textureId == 0)
		{
			render->createTexture(&textureId);
			font->setTextureId(textureId);
		}

		// send texture image
		render->bindTexture(textureId);
		render->setTextureUWrapMode(M_WRAP_REPEAT);
		render->setTextureVWrapMode(M_WRAP_REPEAT);
		render->sendTextureImage(&image, 0, 1, 0);
	}

	// read characters infos
	{
		// size
		unsigned int size;
		fread(&size, sizeof(int), 1, file);

		// characters
		unsigned int i;
		for(i=0; i<size; i++)
		{
			unsigned int charCode;
			MVector2 pos;
			MVector2 offset;
			MVector2 scale;
			float xadvance;

			fread(&charCode, sizeof(int), 1, file);
			fread(&pos, sizeof(float), 2, file);
			fread(&offset, sizeof(float), 2, file);
			fread(&scale, sizeof(float), 2, file);
			fread(&xadvance, sizeof(float), 1, file);

			font->setCharacter(charCode, MCharacter(xadvance, offset, pos, scale));
		}
	}

	fclose(file);
	return true;
}