Remove pre-processor conditional blocks for OpenGL Renderer and OpenGL Interface graphics.

SConscript

@@ -506,11 +506,6 @@ if not GetOption('nolua') and not GetOption('renderer') and not GetOption('font'
 if GetOption('nohttp') or GetOption('renderer'):
 	env.Append(CPPDEFINES=['NOHTTP'])
 
-if GetOption('opengl') or GetOption('opengl-renderer'):
-	env.Append(CPPDEFINES=['OGLI', 'PIX32OGL'])
-	if GetOption('opengl-renderer'):
-		env.Append(CPPDEFINES=['OGLR'])
-
 if GetOption('renderer'):
 	env.Append(CPPDEFINES=['RENDERER'])
 

src/PowderToySDL.cpp

@@ -135,12 +135,6 @@ void CalculateMousePosition(int *x, int *y)
 		*y = (globalMy - windowY) / scale;
 }
 
-#ifdef OGLI
-void blit()
-{
-	SDL_GL_SwapBuffers();
-}
-#else
 void blit(pixel * vid)
 {
 	SDL_UpdateTexture(sdl_texture, NULL, vid, WINDOWW * sizeof (Uint32));
@@ -150,7 +144,6 @@ void blit(pixel * vid)
 	SDL_RenderCopy(sdl_renderer, sdl_texture, NULL, NULL);
 	SDL_RenderPresent(sdl_renderer);
 }
-#endif
 
 void RecreateWindow();
 int SDLOpen()
@@ -520,11 +513,7 @@ void EngineProcess()
 						 engine->GetForceIntegerScaling());
 		}
 
-#ifdef OGLI
-		blit();
-#else
 		blit(engine->g->vid);
-#endif
 
 		int frameTime = SDL_GetTicks() - frameStart;
 		frameTimeAvg = frameTimeAvg * 0.8 + frameTime * 0.2;
@@ -590,11 +579,8 @@ void BlueScreen(String detailMessage)
 		while (SDL_PollEvent(&event))
 			if(event.type == SDL_QUIT)
 				exit(-1);
-#ifdef OGLI
-		blit();
-#else
+
 		blit(engine->g->vid);
-#endif
 	}
 }
 
@@ -717,18 +703,6 @@ int main(int argc, char * argv[])
 		showDoubleScreenDialog = true;
 	}
 
-#ifdef OGLI
-	SDL_GL_SetAttribute (SDL_GL_DOUBLEBUFFER, 1);
-	//glScaled(2.0f, 2.0f, 1.0f);
-#endif
-#if defined(OGLI) && !defined(MACOSX)
-	int status = glewInit();
-	if(status != GLEW_OK)
-	{
-		fprintf(stderr, "Initializing Glew: %d\n", status);
-		exit(-1);
-	}
-#endif
 	ui::Engine::Ref().g = new Graphics();
 	ui::Engine::Ref().Scale = scale;
 	ui::Engine::Ref().SetResizable(resizable);
@@ -806,11 +780,9 @@ int main(int argc, char * argv[])
 			engine->g->drawrect((engine->GetWidth()/2)-100, (engine->GetHeight()/2)-25, 200, 50, 255, 255, 255, 180);
 			engine->g->drawtext((engine->GetWidth()/2)-(Graphics::textwidth("Loading save...")/2), (engine->GetHeight()/2)-5, "Loading save...", style::Colour::InformationTitle.Red, style::Colour::InformationTitle.Green, style::Colour::InformationTitle.Blue, 255);
 
-#ifdef OGLI
-			blit();
-#else
+
 			blit(engine->g->vid);
-#endif
+
 			ByteString ptsaveArg = arguments["ptsave"];
 			try
 			{

src/graphics/Graphics.cpp

@@ -1061,10 +1061,7 @@ pixel *Graphics::render_packed_rgb(void *image, int width, int height, int cmp_s
 
 VideoBuffer Graphics::DumpFrame()
 {
-#ifdef OGLI
-#else
 	VideoBuffer newBuffer(WINDOWW, WINDOWH);
 	std::copy(vid, vid+(WINDOWW*WINDOWH), newBuffer.Buffer);
 	return newBuffer;
-#endif
 }

src/graphics/Graphics.h

@@ -2,9 +2,6 @@
 #define GRAPHICS_H
 
 #include "common/String.h"
-#if defined(OGLI)
-#include "OpenGLHeaders.h"
-#endif
 #include "Config.h"
 #include "common/tpt-inline.h"
 #include "Pixel.h"
@@ -25,20 +22,6 @@ public:
 	void Resize(int width, int height, bool resample = false, bool fixedRatio = true);
 	TPT_INLINE void BlendPixel(int x, int y, int r, int g, int b, int a)
 	{
-	#ifdef PIX32OGL
-		pixel t;
-		if (x<0 || y<0 || x>=Width || y>=Height)
-			return;
-		if (a!=255)
-		{
-			t = Buffer[y*(Width)+x];
-			r = (a*r + (255-a)*PIXR(t)) >> 8;
-			g = (a*g + (255-a)*PIXG(t)) >> 8;
-			b = (a*b + (255-a)*PIXB(t)) >> 8;
-			a = a > PIXA(t) ? a : PIXA(t);
-		}
-		Buffer[y*(Width)+x] = PIXRGBA(r,g,b,a);
-	#else
 		pixel t;
 		if (x<0 || y<0 || x>=Width || y>=Height)
 			return;
@@ -50,18 +33,13 @@ public:
 			b = (a*b + (255-a)*PIXB(t)) >> 8;
 		}
 		Buffer[y*(Width)+x] = PIXRGB(r,g,b);
-	#endif
 	}
 
 	TPT_INLINE void SetPixel(int x, int y, int r, int g, int b, int a)
 	{
 		if (x<0 || y<0 || x>=Width || y>=Height)
 				return;
-	#ifdef PIX32OGL
-		Buffer[y*(Width)+x] = PIXRGBA(r,g,b,a);
-	#else
 		Buffer[y*(Width)+x] = PIXRGB((r*a)>>8, (g*a)>>8, (b*a)>>8);
-	#endif
 	}
 
 	TPT_INLINE void AddPixel(int x, int y, int r, int g, int b, int a)
@@ -92,14 +70,6 @@ class Graphics
 public:
 	pixel *vid;
 	int sdl_scale;
-#ifdef OGLI
-	//OpenGL specific instance variables
-	GLuint vidBuf, textTexture;
-	void Reset();
-	void LoadDefaults();
-	void InitialiseTextures();
-	void DestroyTextures();
- #endif
 
 	//Common graphics methods in Graphics.cpp
 	static char * GenerateGradient(pixel * colours, float * points, int pointcount, int size);

src/graphics/Pixel.h

@@ -24,16 +24,6 @@
 #define PIXR(x) (((x)>>8)&0xFF)
 #define PIXG(x) (((x)>>16)&0xFF)
 #define PIXB(x) (((x)>>24)&0xFF)
-#elif defined(PIX32OGL)
-#undef PIXELCHANNELS
-#define PIXELCHANNELS 4
-#define PIXPACK(x) (0xFF000000|((x)&0xFFFFFF))												//32bit ARGB in 32bit int: AARRGGBB
-#define PIXRGB(r,g,b) (0xFF000000|((r)<<16)|((g)<<8)|((b)))
-#define PIXRGBA(r,g,b,a) (((a)<<24)|((r)<<16)|((g)<<8)|((b)))
-#define PIXA(x) (((x)>>24)&0xFF)
-#define PIXR(x) (((x)>>16)&0xFF)
-#define PIXG(x) (((x)>>8)&0xFF)
-#define PIXB(x) ((x)&0xFF)
 #else
 #define PIXPACK(x) (x)																		//24bit RGB in 32bit int: 00RRGGBB.
 #define PIXRGB(r,g,b) (((r)<<16)|((g)<<8)|(b))

src/graphics/RasterGraphics.cpp

@@ -3,8 +3,6 @@
 #include <cstdlib>
 #include <cstring>
 
-#ifndef OGLI
-
 Graphics::Graphics():
 sdl_scale(1)
 {
@@ -34,5 +32,3 @@ void Graphics::Finalise()
 #undef VIDYRES
 #undef VIDXRES
 #undef PIXELMETHODS_CLASS
-
-#endif

src/graphics/Renderer.h

@@ -2,9 +2,6 @@
 #define RENDERER_H
 
 #include <vector>
-#ifdef OGLR
-#include "OpenGLHeaders.h"
-#endif
 
 #include "Graphics.h"
 #include "Config.h"
@@ -97,13 +94,6 @@ public:
 	void clearScreen(float alpha);
 	void SetSample(int x, int y);
 
-#ifdef OGLR
-	void checkShader(GLuint shader, const char * shname);
-	void checkProgram(GLuint program, const char * progname);
-	void loadShaders();
-	GLuint vidBuf,textTexture;
-	GLint prevFbo;
-#endif
 	pixel * vid;
 	pixel * persistentVid;
 	pixel * warpVid;
@@ -166,26 +156,6 @@ public:
 
 private:
 	int gridSize;
-#ifdef OGLR
-	GLuint zoomTex, airBuf, fireAlpha, glowAlpha, blurAlpha, partsFboTex, partsFbo, partsTFX, partsTFY, airPV, airVY, airVX;
-	GLuint fireProg, airProg_Pressure, airProg_Velocity, airProg_Cracker, lensProg;
-	GLuint fireV[(YRES*XRES)*2];
-	GLfloat fireC[(YRES*XRES)*4];
-	GLuint smokeV[(YRES*XRES)*2];
-	GLfloat smokeC[(YRES*XRES)*4];
-	GLuint blobV[(YRES*XRES)*2];
-	GLfloat blobC[(YRES*XRES)*4];
-	GLuint blurV[(YRES*XRES)*2];
-	GLfloat blurC[(YRES*XRES)*4];
-	GLuint glowV[(YRES*XRES)*2];
-	GLfloat glowC[(YRES*XRES)*4];
-	GLuint flatV[(YRES*XRES)*2];
-	GLfloat flatC[(YRES*XRES)*4];
-	GLuint addV[(YRES*XRES)*2];
-	GLfloat addC[(YRES*XRES)*4];
-	GLfloat lineV[(((YRES*XRES)*2)*6)];
-	GLfloat lineC[(((YRES*XRES)*2)*6)];
-#endif
 };
 
 #endif

src/gui/game/GameView.cpp

@@ -2416,7 +2416,6 @@ void GameView::OnDraw()
 		g->fillrect(XRES-20-textWidth, 12, textWidth+8, 15, 0, 0, 0, alpha*0.5f);
 		g->drawtext(XRES-16-textWidth, 16, sampleInfo.Build(), 255, 255, 255, alpha*0.75f);
 
-#ifndef OGLI
 		if (wavelengthGfx)
 		{
 			int i, cr, cg, cb, j, h = 3, x = XRES-19-textWidth, y = 10;
@@ -2451,7 +2450,6 @@ void GameView::OnDraw()
 				}
 			}
 		}
-#endif
 
 		if (showDebug)
 		{

src/gui/game/SignTool.cpp

@@ -212,20 +212,13 @@ void SignWindow::DoDraw()
 			y = currentSign.y;
 			dx = 1 - currentSign.ju;
 			dy = (currentSign.y > 18) ? -1 : 1;
-#ifdef OGLR
-			glBegin(GL_LINES);
-			glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
-			glVertex2i(x, y);
-			glVertex2i(x+(dx*4), y+(dy*4));
-			glEnd();
-#else
+
 			for (int j=0; j<4; j++)
 			{
 				g->blendpixel(x, y, 192, 192, 192, 255);
 				x+=dx;
 				y+=dy;
 			}
-#endif
 		}
 	}
 	if(!signMoving)

src/gui/interface/Engine.cpp

@@ -117,9 +117,7 @@ void Engine::ShowWindow(Window * window)
 		}
 		lastBuffer = (pixel*)malloc((width_ * height_) * PIXELSIZE);
 
-#ifndef OGLI
 		memcpy(lastBuffer, g->vid, (width_ * height_) * PIXELSIZE);
-#endif
 
 		windows.push(state_);
 		mousePositions.push(ui::Point(mousex_, mousey_));
@@ -225,12 +223,10 @@ void Engine::Draw()
 	if(lastBuffer && !(state_ && state_->Position.X == 0 && state_->Position.Y == 0 && state_->Size.X == width_ && state_->Size.Y == height_))
 	{
 		g->Clear();
-#ifndef OGLI
 		memcpy(g->vid, lastBuffer, (width_ * height_) * PIXELSIZE);
 		if(windowOpenState < 20)
 			windowOpenState++;
 		g->fillrect(0, 0, width_, height_, 0, 0, 0, 255-std::pow(.98, windowOpenState)*255);
-#endif
 	}
 	else
 	{

src/gui/interface/Panel.cpp

@@ -13,30 +13,7 @@ Panel::Panel(Point position, Point size):
 	ViewportPosition(0, 0),
 	mouseInside(false)
 {
-#ifdef OGLI
-	GLint lastVid;
-	glGetIntegerv(GL_FRAMEBUFFER_BINDING, &lastVid);
-
-	glEnable(GL_TEXTURE_2D);
-	glGenTextures(1, &myVidTex);
-	glBindTexture(GL_TEXTURE_2D, myVidTex);
-	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, WINDOWW, WINDOWH, 0, GL_RGBA, GL_FLOAT, NULL);
-	glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST);
-	glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST);
-
-	//FBO
-	glGenFramebuffers(1, &myVid);
-	glBindFramebuffer(GL_DRAW_FRAMEBUFFER, myVid);
-	glEnable(GL_BLEND);
-	glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, myVidTex, 0);
-	glBindTexture(GL_TEXTURE_2D, 0);
-	glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0); // Reset framebuffer binding
-	glDisable(GL_TEXTURE_2D);
-
-	glBindFramebuffer(GL_DRAW_FRAMEBUFFER, lastVid);
-#else
 	myVid = new pixel[WINDOWW*WINDOWH];
-#endif
 }
 
 Panel::~Panel()
@@ -45,12 +22,8 @@ Panel::~Panel()
 	{
 		delete children[i];
 	}
-#ifdef OGLI
-	glDeleteTextures(1, &myVidTex);
-	glDeleteFramebuffers(1, &myVid);
-#else
+
 	delete[] myVid;
-#endif
 }
 
 void Panel::AddChild(Component* c)
@@ -97,17 +70,10 @@ void Panel::Draw(const Point& screenPos)
 
 	// draw ourself first
 	XDraw(screenPos);
-#ifdef OGLI
-	GLint lastVid;
-	glGetIntegerv(GL_FRAMEBUFFER_BINDING, &lastVid);
-	glBindFramebuffer(GL_DRAW_FRAMEBUFFER, myVid);
-	glClearColor(1.0f, 0.0f, 0.0f, 0.0f);
-	glClear(GL_COLOR_BUFFER_BIT);
-#else
+
 	pixel * lastVid = ui::Engine::Ref().g->vid;
 	ui::Engine::Ref().g->vid = myVid;
 	std::fill(myVid, myVid+(WINDOWW*WINDOWH), 0);
-#endif
 
 	// attempt to draw all children
 	for (size_t i = 0; i < children.size(); ++i)
@@ -127,32 +93,6 @@ void Panel::Draw(const Point& screenPos)
 		}
 	}
 
-#ifdef OGLI
-	glBindFramebuffer(GL_DRAW_FRAMEBUFFER, lastVid);
-
-	glEnable(GL_TEXTURE_2D);
-	glBindTexture(GL_TEXTURE_2D, myVidTex);
-
-	int x = screenPos.X, y = screenPos.Y;
-	int h = Size.Y, w = Size.X;
-
-	double texX = double(Size.X)/WINDOWW, texY = 1, texYB = 1-(double(Size.Y)/WINDOWH);
-
-    glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
-	glBegin(GL_QUADS);
-    glTexCoord2d(0, texYB);
-    glVertex2f(x, y+h);
-    glTexCoord2d(texX, texYB);
-    glVertex2f(x+w, y+h);
-    glTexCoord2d(texX, texY);
-    glVertex2f(x+w, y);
-    glTexCoord2d(0, texY);
-    glVertex2f(x, y);
-    glEnd();
-
-	glBindTexture(GL_TEXTURE_2D, 0);
-	glDisable(GL_TEXTURE_2D);
-#else
 	ui::Engine::Ref().g->vid = lastVid;
 
 	//dst=(pixel *)sdl_scrn->pixels+y*sdl_scrn->pitch/PIXELSIZE+x;
@@ -160,7 +100,6 @@ void Panel::Draw(const Point& screenPos)
 	{
 		std::copy(myVid+(row*WINDOWW), myVid+(row*WINDOWW)+Size.X, lastVid+((screenPos.Y+row)*WINDOWW)+screenPos.X);
 	}
-#endif
 }
 
 void Panel::Tick(float dt)

src/gui/interface/Panel.h

@@ -5,11 +5,6 @@
 #include "gui/interface/Point.h"
 #include "gui/interface/Component.h"
 
-#ifdef OGLI
-#include "graphics/OpenGLHeaders.h"
-#endif
-
-
 class Graphics;
 namespace ui
 {
@@ -27,11 +22,8 @@ class Component;
 	public:
 		friend class Component;
 
-#ifdef OGLI
-		GLuint myVid, myVidTex;
-#else
 		pixel * myVid;
-#endif
+
 		ui::Point InnerSize;
 		ui::Point ViewportPosition;
 

src/gui/interface/Slider.cpp

@@ -109,13 +109,9 @@ void Slider::Draw(const Point& screenPos)
 
 	if(bgGradient)
 	{
-#ifndef OGLI
 		for (int j = 3; j < Size.Y-7; j++)
 				for (int i = 3; i < Size.X-7; i++)
 					g->blendpixel(screenPos.X+i+2, screenPos.Y+j+2, bgGradient[(i-3)*3], bgGradient[(i-3)*3+1], bgGradient[(i-3)*3+2], 255);
-#else
-		g->gradientrect(screenPos.X+5, screenPos.Y+5, Size.X-10, Size.Y-10, col1.Red, col1.Green, col1.Blue, col1.Alpha, col2.Red, col2.Green, col2.Blue, col2.Alpha);
-#endif
 	}
 
 	g->drawrect(screenPos.X+3, screenPos.Y+3, Size.X-6, Size.Y-6, 255, 255, 255, 255);

src/gui/render/RenderView.cpp

@@ -246,11 +246,7 @@ RenderView::RenderView():
 	tCheckbox->SetActionCallback(new DisplayModeAction(this, DISPLAY_WARP));
 	AddComponent(tCheckbox);
 
-#ifdef OGLR
-	tCheckbox = new ui::Checkbox(ui::Point(checkboxOffset, YRES+4), ui::Point(30, 16), "Effect", "Some type of OpenGL effect ... maybe"); //I would remove the whole checkbox, but then there's a large empty space
-#else
 	tCheckbox = new ui::Checkbox(ui::Point(checkboxOffset, YRES+4), ui::Point(30, 16), "Effect", "Enables moving solids, stickmen guns, and premium(tm) graphics");
-#endif
 	displayModes.push_back(tCheckbox);
 	tCheckbox->SetIcon(IconEffect);
 	tCheckbox->SetActionCallback(new DisplayModeAction(this, DISPLAY_EFFE));

src/simulation/SaveRenderer.cpp

@@ -13,24 +13,6 @@ SaveRenderer::SaveRenderer(){
 	ren = new Renderer(g, sim);
 	ren->decorations_enable = true;
 	ren->blackDecorations = true;
-
-#if defined(OGLR) || defined(OGLI)
-	glEnable(GL_TEXTURE_2D);
-	glGenTextures(1, &fboTex);
-	glBindTexture(GL_TEXTURE_2D, fboTex);
-	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, XRES, YRES, 0, GL_RGBA, GL_FLOAT, NULL);
-	glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST);
-	glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST);
-
-	//FBO
-	glGenFramebuffers(1, &fbo);
-	glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo);
-	glEnable(GL_BLEND);
-	glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, fboTex, 0);
-	glBindTexture(GL_TEXTURE_2D, 0);
-	glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0); // Reset framebuffer binding
-	glDisable(GL_TEXTURE_2D);
-#endif
 }
 
 VideoBuffer * SaveRenderer::Render(GameSave * save, bool decorations, bool fire)
@@ -50,67 +32,7 @@ VideoBuffer * SaveRenderer::Render(GameSave * save, bool decorations, bool fire)
 	{
 		ren->decorations_enable = true;
 		ren->blackDecorations = !decorations;
-#if defined(OGLR) || defined(OGLI)
-		pixel * pData = NULL;
-		unsigned char * texData = NULL;
 
-		glTranslated(0, MENUSIZE, 0);
-		glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo);
-		glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
-		glClear(GL_COLOR_BUFFER_BIT);
-
-		ren->clearScreen(1.0f);
-		ren->ClearAccumulation();
-
-#ifdef OGLR
-		ren->RenderBegin();
-		ren->RenderEnd();
-#else
-		if (fire)
-		{
-			int frame = 15;
-			while(frame)
-			{
-				frame--;
-				ren->render_parts();
-				ren->render_fire();
-				ren->clearScreen(1.0f);
-			}
-		}
-
-		ren->RenderBegin();
-		ren->RenderEnd();
-#endif
-
-		glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
-		glTranslated(0, -MENUSIZE, 0);
-
-		glEnable( GL_TEXTURE_2D );
-		glBindTexture(GL_TEXTURE_2D, fboTex);
-
-		pData = new pixel[XRES*YRES];
-		texData = new unsigned char[(XRES*YRES)*PIXELSIZE];
-		std::fill(texData, texData+(XRES*YRES)*PIXELSIZE, 0xDD);
-		glGetTexImage(GL_TEXTURE_2D, 0, GL_RGBA, GL_UNSIGNED_BYTE, texData);
-		glDisable(GL_TEXTURE_2D);
-
-		for(int x = 0; x < width*CELL; x++)
-		{
-			for(int y = 0; y < height*CELL; y++)
-			{
-				unsigned char red = texData[((((YRES-1-y)*XRES)+x)*4)];
-				unsigned char green = texData[((((YRES-1-y)*XRES)+x)*4)+1];
-				unsigned char blue = texData[((((YRES-1-y)*XRES)+x)*4)+2];
-
-				pData[(y*(width*CELL))+x] = PIXRGBA(red, green, blue, 255);
-			}
-		}
-
-		tempThumb = new VideoBuffer(pData, width*CELL, height*CELL);
-		delete[] pData;
-		delete[] texData;
-		pData = NULL;
-#else
 		pixel * pData = NULL;
 		pixel * dst;
 		pixel * src = g->vid;
@@ -143,7 +65,6 @@ VideoBuffer * SaveRenderer::Render(GameSave * save, bool decorations, bool fire)
 		}
 		tempThumb = new VideoBuffer(pData, width*CELL, height*CELL);
 		free(pData);
-#endif
 	}
 	if(doCollapse)
 		save->Collapse();

src/simulation/SaveRenderer.h

@@ -1,8 +1,5 @@
 #ifndef SAVERENDERER_H_
 #define SAVERENDERER_H_
-#ifdef OGLI
-#include "graphics/OpenGLHeaders.h"
-#endif
 #include "common/Singleton.h"
 #include <mutex>
 
@@ -24,11 +21,6 @@ public:
 	void CopyModes(Renderer *source);
 	void ResetModes();
 	virtual ~SaveRenderer();
-
-private:
-#if defined(OGLR) || defined(OGLI)
-	GLuint fboTex, fbo;
-#endif
 };
 
 #endif /* SAVERENDERER_H_ */