geEngine_SetClearColor

[QuestOfDreams]

Added the possibility to set the clear color in Genesis3D

genesis.h and engine.h

add

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GENESISAPI geBoolean	geEngine_SetClearColor(geEngine *Engine, geFloat r, geFloat g, geFloat b);

system.h

in the geEngine struct add

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geFloat		ClearR;
geFloat		ClearG;
geFloat		ClearB;

engine.c

add

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//=====================================================================================
//	geEngine_UpdateClearColor
//=====================================================================================
static geBoolean geEngine_UpdateClearColor(geEngine *Engine)
{
	if(Engine->DriverInfo.RDriver)
	{
		return Engine->DriverInfo.RDriver->SetClearColor(Engine->ClearR,
								Engine->ClearG, 
								Engine->ClearB);
	}

	return GE_TRUE;
}

//=====================================================================================
//	geEngine_SetClearColor
//=====================================================================================
GENESISAPI geBoolean geEngine_SetClearColor(geEngine *Engine, geFloat r, geFloat g, geFloat b)
{
	Engine->ClearR = r;
	Engine->ClearG = g;
	Engine->ClearB = b;

	return geEngine_UpdateClearColor(Engine);
}

dcommon.h

add

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typedef geBoolean DRIVERCC DRV_SET_CLEARCOLOR(geFloat r, geFloat g, geFloat b);

in the DRV_Driver struct after DRV_SET_FOG_ENABLE *SetFogEnable; add

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DRV_SET_CLEARCOLOR	*SetClearColor;

DX7 driver:

D3d_main.h

in the App_Info struct add

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float		ClearR;
float		ClearG;
float		ClearB;

add

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geBoolean DRIVERCC	D3DMain_SetClearColor(float r, float g, float b);

D3d_main.cpp

in BOOL Main_ClearBackBuffer(BOOL Clear, BOOL ClearZ, BOOL ClearStencil) change

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if (AppInfo.FogEnable) 
	LastError = AppInfo.lpD3DDevice->Clear( 1, &Dummy, ClearFlags, ((DWORD)AppInfo.FogR<<16)|((DWORD)AppInfo.FogG<<8)|(DWORD)AppInfo.FogB, 1.0f, 0L );
else
	LastError = AppInfo.lpD3DDevice->Clear( 1, &Dummy, ClearFlags, ((DWORD)AppInfo.ClearR<<16)|((DWORD)AppInfo.ClearG<<8)|(DWORD)AppInfo.ClearB, 1.0f, 0L ); 

change

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geBoolean DRIVERCC D3DMain_SetFogEnable(geBoolean Enable, float r, float g, float b, float Start, float End)
{
/* 07/16/2000 Wendell Buckner
    Convert to Directx7...    
	D3DMATERIAL			Material; */
    D3DMATERIAL7		Material;

	AppInfo.FogEnable = Enable;
	AppInfo.FogR = r;
	AppInfo.FogG = g;
	AppInfo.FogB = b;
	AppInfo.FogStart = Start;
	AppInfo.FogEnd = End;

	// Fill in the material with the data
/* 07/16/2000 Wendell Buckner
    Convert to Directx7...    	
	memset(&Material, 0, sizeof(D3DMATERIAL));
	Material.dwSize       = sizeof(D3DMATERIAL); */
	memset(&Material, 0, sizeof(D3DMATERIAL7));

	if (Enable)
	{
		Material.dcvDiffuse.r = Material.dcvAmbient.r = r/255.0f;
		Material.dcvDiffuse.g = Material.dcvAmbient.g = g/255.0f;
		Material.dcvDiffuse.b = Material.dcvAmbient.b = b/255.0f;
	}
	else
	{
		Material.dcvDiffuse.r = Material.dcvAmbient.r = AppInfo.ClearR/255.0f;
		Material.dcvDiffuse.g = Material.dcvAmbient.g = AppInfo.ClearG/255.0f;
		Material.dcvDiffuse.b = Material.dcvAmbient.b = AppInfo.ClearB/255.0f;
	}

/* 07/16/2000 Wendell Buckner
    Convert to Directx7...    		
	Material.dwRampSize = 16L; // A default ramp size */

	AppInfo.BackgroundMaterial->SetMaterial(&Material); 

	return GE_TRUE;
}

add

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//========================================================================================================
//	D3DMain_SetClearColor
//========================================================================================================
geBoolean DRIVERCC D3DMain_SetClearColor(float r, float g, float b)
{
	D3DMATERIAL7		Material;

	AppInfo.ClearR = r;
	AppInfo.ClearG = g;
	AppInfo.ClearB = b;

	// Fill in the material with the data
	memset(&Material, 0, sizeof(D3DMATERIAL7));

	Material.dcvDiffuse.r = Material.dcvAmbient.r = r/255.0f;
	Material.dcvDiffuse.g = Material.dcvAmbient.g = g/255.0f;
	Material.dcvDiffuse.b = Material.dcvAmbient.b = b/255.0f;
	
	AppInfo.BackgroundMaterial->SetMaterial(&Material); 

	return GE_TRUE;
}

Scene.cpp

in BOOL DRIVERCC BeginScene(BOOL Clear, BOOL ClearZ, BOOL ClearStencil, RECT *WorldRect) change

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if (AppInfo.FogEnable)
{
	D3DFogEnable ( AppInfo.FogEnable, ((DWORD)AppInfo.FogR<<16)|((DWORD)AppInfo.FogG<<8)|(DWORD)AppInfo.FogB );		
}
else
{
	D3DFogEnable ( AppInfo.FogEnable, ((DWORD)AppInfo.ClearR<<16)|((DWORD)AppInfo.ClearG<<8)|(DWORD)AppInfo.ClearB );		
}

D3ddrv7x.cpp

in the DRV_Driver D3DDRV initialization after D3DMain_SetFogEnable, add

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D3DMain_SetClearColor,

changes in the old d3d driver are pretty much the same


OpenGL driver

OglDrv.c

to the globals add

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GLfloat ClearColor[3];

in the DRV_Driver OGLDRV initialization after SetFogEnable, add

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SetClearColor,

in geBoolean DRIVERCC SetFogEnable(geBoolean Enable, float r, float g, float b, float Start, float End)
change

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else
{
	glDisable(GL_FOG);
	FogEnabled = GE_FALSE;
	glClearColor(ClearColor[0], ClearColor[1], ClearColor[2], 1.0);
}

add

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geBoolean DRIVERCC SetClearColor(float r, float g, float b)
{
	ClearColor[0] = (GLfloat)r/255.0f;
	ClearColor[1] = (GLfloat)g/255.0f;
	ClearColor[2] = (GLfloat)b/255.0f;

	glClearColor(ClearColor[0], ClearColor[1], ClearColor[2], 1.0);

	return GE_TRUE;
}

in geBoolean DRIVERCC DrvInit(DRV_DriverHook *Hook) add

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ClearColor[0] = ClearColor[1] = ClearColor[2] = 0.f;

[federico]

I will add it to the modified G3d source with

geWorld_AddEntity
geWorld_GetWorldGeometry
geActor_SetBoneGlobalAttachment

[fps]

i think i understand what this is for but i may be mistaken.
will this command take a defined color value and make it transparent on any actor, bitmap, brush?
am i right about this?
ive seen this tecnique used on trees, bushes, hair, fences, ect...
also will this possibly lead to alpha maps being obsolete???

[QuestOfDreams]

No, this just defines the color the rendering window gets cleared to before anything is drawn to it. This is not of much use in game but for example allows you to set the background color in the ActView tool to something different than black (like you can do it in the Viewer tool now).

[fps]

oh.