// This could be two functions, but I want to keep the number of different API calls to a minimum
void GLRB_SetPortalRendering( qboolean enabled, const float* flipMatrix, const float* plane )
{
    if ( enabled )
    {
        double dplane[4] = {
            plane[0],
            plane[1],
            plane[2],
            plane[3] };

        qglLoadMatrixf( flipMatrix );
        qglClipPlane( GL_CLIP_PLANE0, dplane );
        qglEnable( GL_CLIP_PLANE0 );
    }
    else
    {
        qglDisable( GL_CLIP_PLANE0 );
    }
}
示例#2
0
/*
=================
RB_BeginDrawingView

Any mirrored or portaled views have already been drawn, so prepare
to actually render the visible surfaces for this view
=================
*/
void RB_BeginDrawingView (void) {
	int clearBits = 0;

	// sync with gl if needed
	if ( r_finish->integer == 1 && !glState.finishCalled ) {
		qglFinish ();
		glState.finishCalled = qtrue;
	}
	if ( r_finish->integer == 0 ) {
		glState.finishCalled = qtrue;
	}

	// we will need to change the projection matrix before drawing
	// 2D images again
	backEnd.projection2D = qfalse;

	//
	// set the modelview matrix for the viewer
	//
	SetViewportAndScissor();

	// ensures that depth writes are enabled for the depth clear
	GL_State( GLS_DEFAULT );
	// clear relevant buffers
	clearBits = GL_DEPTH_BUFFER_BIT;

	if ( r_measureOverdraw->integer || r_shadows->integer == 2 )
	{
		clearBits |= GL_STENCIL_BUFFER_BIT;
	}
	if ( r_fastsky->integer && !( backEnd.refdef.rdflags & RDF_NOWORLDMODEL ) )
	{
		clearBits |= GL_COLOR_BUFFER_BIT;	// FIXME: only if sky shaders have been used
#ifdef _DEBUG
		qglClearColor( 0.8f, 0.7f, 0.4f, 1.0f );	// FIXME: get color of sky
#else
		qglClearColor( 0.0f, 0.0f, 0.0f, 1.0f );	// FIXME: get color of sky
#endif
	}
	qglClear( clearBits );

	if ( ( backEnd.refdef.rdflags & RDF_HYPERSPACE ) )
	{
		RB_Hyperspace();
		return;
	}
	else
	{
		backEnd.isHyperspace = qfalse;
	}

	glState.faceCulling = -1;		// force face culling to set next time

	// we will only draw a sun if there was sky rendered in this view
	backEnd.skyRenderedThisView = qfalse;

	// clip to the plane of the portal
	if ( backEnd.viewParms.isPortal ) {
		float	plane[4];
		double	plane2[4];

		plane[0] = backEnd.viewParms.portalPlane.normal[0];
		plane[1] = backEnd.viewParms.portalPlane.normal[1];
		plane[2] = backEnd.viewParms.portalPlane.normal[2];
		plane[3] = backEnd.viewParms.portalPlane.dist;

		plane2[0] = DotProduct (backEnd.viewParms.or.axis[0], plane);
		plane2[1] = DotProduct (backEnd.viewParms.or.axis[1], plane);
		plane2[2] = DotProduct (backEnd.viewParms.or.axis[2], plane);
		plane2[3] = DotProduct (plane, backEnd.viewParms.or.origin) - plane[3];

		qglLoadMatrixf( s_flipMatrix );
		qglClipPlane (GL_CLIP_PLANE0, plane2);
		qglEnable (GL_CLIP_PLANE0);
	} else {
		qglDisable (GL_CLIP_PLANE0);
	}
}
示例#3
0
/*
=================
RB_BeginDrawingView

Any mirrored or portaled views have already been drawn, so prepare
to actually render the visible surfaces for this view
=================
*/
void RB_BeginDrawingView( void ) {
	int clearBits = 0;

	// sync with gl if needed
	if ( r_finish->integer == 1 && !glState.finishCalled ) {
		qglFinish();
		glState.finishCalled = qtrue;
	}
	if ( r_finish->integer == 0 ) {
		glState.finishCalled = qtrue;
	}

	// we will need to change the projection matrix before drawing
	// 2D images again
	backEnd.projection2D = qfalse;

	//
	// set the modelview matrix for the viewer
	//
	SetViewportAndScissor();

	// ensures that depth writes are enabled for the depth clear
	GL_State( GLS_DEFAULT );


////////// (SA) modified to ensure one glclear() per frame at most

	// clear relevant buffers
	clearBits = 0;

	if ( r_measureOverdraw->integer || r_shadows->integer == 2 ) {
		clearBits |= GL_STENCIL_BUFFER_BIT;
	}

	if ( r_uiFullScreen->integer ) {
		clearBits = GL_DEPTH_BUFFER_BIT;    // (SA) always just clear depth for menus

	} else if ( skyboxportal ) {
		if ( backEnd.refdef.rdflags & RDF_SKYBOXPORTAL ) {   // portal scene, clear whatever is necessary
			clearBits |= GL_DEPTH_BUFFER_BIT;

			if ( r_fastsky->integer || backEnd.refdef.rdflags & RDF_NOWORLDMODEL ) {  // fastsky: clear color

				// try clearing first with the portal sky fog color, then the world fog color, then finally a default
				clearBits |= GL_COLOR_BUFFER_BIT;
				if ( glfogsettings[FOG_PORTALVIEW].registered ) {
					qglClearColor( glfogsettings[FOG_PORTALVIEW].color[0], glfogsettings[FOG_PORTALVIEW].color[1], glfogsettings[FOG_PORTALVIEW].color[2], glfogsettings[FOG_PORTALVIEW].color[3] );
				} else if ( glfogNum > FOG_NONE && glfogsettings[FOG_CURRENT].registered )      {
					qglClearColor( glfogsettings[FOG_CURRENT].color[0], glfogsettings[FOG_CURRENT].color[1], glfogsettings[FOG_CURRENT].color[2], glfogsettings[FOG_CURRENT].color[3] );
				} else {
//					qglClearColor ( 1.0, 0.0, 0.0, 1.0 );	// red clear for testing portal sky clear
					qglClearColor( 0.5, 0.5, 0.5, 1.0 );
				}
			} else {                                                    // rendered sky (either clear color or draw quake sky)
				if ( glfogsettings[FOG_PORTALVIEW].registered ) {
					qglClearColor( glfogsettings[FOG_PORTALVIEW].color[0], glfogsettings[FOG_PORTALVIEW].color[1], glfogsettings[FOG_PORTALVIEW].color[2], glfogsettings[FOG_PORTALVIEW].color[3] );

					if ( glfogsettings[FOG_PORTALVIEW].clearscreen ) {    // portal fog requests a screen clear (distance fog rather than quake sky)
						clearBits |= GL_COLOR_BUFFER_BIT;
					}
				}

			}
		} else {                                        // world scene with portal sky, don't clear any buffers, just set the fog color if there is one

			clearBits |= GL_DEPTH_BUFFER_BIT;   // this will go when I get the portal sky rendering way out in the zbuffer (or not writing to zbuffer at all)

			if ( glfogNum > FOG_NONE && glfogsettings[FOG_CURRENT].registered ) {
				if ( backEnd.refdef.rdflags & RDF_UNDERWATER ) {
					if ( glfogsettings[FOG_CURRENT].mode == GL_LINEAR ) {
						clearBits |= GL_COLOR_BUFFER_BIT;
					}

				} else if ( !( r_portalsky->integer ) ) {    // portal skies have been manually turned off, clear bg color
					clearBits |= GL_COLOR_BUFFER_BIT;
				}

				qglClearColor( glfogsettings[FOG_CURRENT].color[0], glfogsettings[FOG_CURRENT].color[1], glfogsettings[FOG_CURRENT].color[2], glfogsettings[FOG_CURRENT].color[3] );
			}
		}
	} else {                                              // world scene with no portal sky
		clearBits |= GL_DEPTH_BUFFER_BIT;

		// NERVE - SMF - we don't want to clear the buffer when no world model is specified
		if ( backEnd.refdef.rdflags & RDF_NOWORLDMODEL ) {
			clearBits &= ~GL_COLOR_BUFFER_BIT;
		}
		// -NERVE - SMF
		// (SA) well, this is silly then
		else if ( r_fastsky->integer ) {   //  || backEnd.refdef.rdflags & RDF_NOWORLDMODEL

			clearBits |= GL_COLOR_BUFFER_BIT;

			if ( glfogsettings[FOG_CURRENT].registered ) { // try to clear fastsky with current fog color
				qglClearColor( glfogsettings[FOG_CURRENT].color[0], glfogsettings[FOG_CURRENT].color[1], glfogsettings[FOG_CURRENT].color[2], glfogsettings[FOG_CURRENT].color[3] );
			} else {
//				qglClearColor ( 0.0, 0.0, 1.0, 1.0 );	// blue clear for testing world sky clear
				qglClearColor( 0.5, 0.5, 0.5, 1.0 );
			}
		} else {        // world scene, no portal sky, not fastsky, clear color if fog says to, otherwise, just set the clearcolor
			if ( glfogsettings[FOG_CURRENT].registered ) { // try to clear fastsky with current fog color
				qglClearColor( glfogsettings[FOG_CURRENT].color[0], glfogsettings[FOG_CURRENT].color[1], glfogsettings[FOG_CURRENT].color[2], glfogsettings[FOG_CURRENT].color[3] );

				if ( glfogsettings[FOG_CURRENT].clearscreen ) {   // world fog requests a screen clear (distance fog rather than quake sky)
					clearBits |= GL_COLOR_BUFFER_BIT;
				}
			}
		}
	}


	if ( clearBits ) {
		qglClear( clearBits );
	}

//----(SA)	done

	if ( ( backEnd.refdef.rdflags & RDF_HYPERSPACE ) ) {
		RB_Hyperspace();
		return;
	} else
	{
		backEnd.isHyperspace = qfalse;
	}

	glState.faceCulling = -1;       // force face culling to set next time

	// we will only draw a sun if there was sky rendered in this view
	backEnd.skyRenderedThisView = qfalse;

	// clip to the plane of the portal
	if ( backEnd.viewParms.isPortal ) {
		float plane[4];
		double plane2[4];

		plane[0] = backEnd.viewParms.portalPlane.normal[0];
		plane[1] = backEnd.viewParms.portalPlane.normal[1];
		plane[2] = backEnd.viewParms.portalPlane.normal[2];
		plane[3] = backEnd.viewParms.portalPlane.dist;

		plane2[0] = DotProduct( backEnd.viewParms.or.axis[0], plane );
		plane2[1] = DotProduct( backEnd.viewParms.or.axis[1], plane );
		plane2[2] = DotProduct( backEnd.viewParms.or.axis[2], plane );
		plane2[3] = DotProduct( plane, backEnd.viewParms.or.origin ) - plane[3];

		qglLoadMatrixf( s_flipMatrix );
		qglClipPlane( GL_CLIP_PLANE0, plane2 );
		qglEnable( GL_CLIP_PLANE0 );
	} else {
		qglDisable( GL_CLIP_PLANE0 );
	}
}
示例#4
0
/*
=================
RB_BeginDrawingView

Any mirrored or portaled views have already been drawn, so prepare
to actually render the visible surfaces for this view
=================
*/
static void RB_BeginDrawingView (void) {
	int clearBits = GL_DEPTH_BUFFER_BIT;

	// sync with gl if needed
	if ( r_finish->integer == 1 && !glState.finishCalled ) {
		qglFinish ();
		glState.finishCalled = qtrue;
	}
	if ( r_finish->integer == 0 ) {
		glState.finishCalled = qtrue;
	}

	// we will need to change the projection matrix before drawing
	// 2D images again
	backEnd.projection2D = qfalse;

	//
	// set the modelview matrix for the viewer
	//
	SetViewportAndScissor();

	// ensures that depth writes are enabled for the depth clear
	GL_State( GLS_DEFAULT );

	// clear relevant buffers
	if ( r_measureOverdraw->integer || r_shadows->integer == 2 || tr_stencilled )
	{
		clearBits |= GL_STENCIL_BUFFER_BIT;
		tr_stencilled = false;
	}

	if (skyboxportal)
	{
		if ( backEnd.refdef.rdflags & RDF_SKYBOXPORTAL )
		{	// portal scene, clear whatever is necessary
			if (r_fastsky->integer || (backEnd.refdef.rdflags & RDF_NOWORLDMODEL) )
			{	// fastsky: clear color
				// try clearing first with the portal sky fog color, then the world fog color, then finally a default
				clearBits |= GL_COLOR_BUFFER_BIT;
				if (tr.world && tr.world->globalFog != -1)
				{
					const fog_t		*fog = &tr.world->fogs[tr.world->globalFog];
					qglClearColor(fog->parms.color[0],  fog->parms.color[1], fog->parms.color[2], 1.0f );
				}
				else
				{
					qglClearColor ( 0.3f, 0.3f, 0.3f, 1.0 );
				}
			}			
		}
	}
	else
	{
		if ( r_fastsky->integer && !( backEnd.refdef.rdflags & RDF_NOWORLDMODEL ) && !g_bRenderGlowingObjects )
		{
			if (tr.world && tr.world->globalFog != -1)
			{
				const fog_t		*fog = &tr.world->fogs[tr.world->globalFog];
				qglClearColor(fog->parms.color[0],  fog->parms.color[1], fog->parms.color[2], 1.0f );
			}
			else
			{
				qglClearColor( 0.3f, 0.3f, 0.3f, 1 );	// FIXME: get color of sky
			}
			clearBits |= GL_COLOR_BUFFER_BIT;	// FIXME: only if sky shaders have been used
		}
	}

	if ( !( backEnd.refdef.rdflags & RDF_NOWORLDMODEL ) && ( r_DynamicGlow->integer && !g_bRenderGlowingObjects ) )
	{
		if (tr.world && tr.world->globalFog != -1)
		{ //this is because of a bug in multiple scenes I think, it needs to clear for the second scene but it doesn't normally.
			const fog_t		*fog = &tr.world->fogs[tr.world->globalFog];

			qglClearColor(fog->parms.color[0],  fog->parms.color[1], fog->parms.color[2], 1.0f );
			clearBits |= GL_COLOR_BUFFER_BIT;
		}
	}
	// If this pass is to just render the glowing objects, don't clear the depth buffer since
	// we're sharing it with the main scene (since the main scene has already been rendered). -AReis
	if ( g_bRenderGlowingObjects )
	{
		clearBits &= ~GL_DEPTH_BUFFER_BIT;
	}

	if (clearBits)
	{
		qglClear( clearBits );
	}

	if ( ( backEnd.refdef.rdflags & RDF_HYPERSPACE ) )
	{
		RB_Hyperspace();
		return;
	}
	else
	{
		backEnd.isHyperspace = qfalse;
	}

	glState.faceCulling = -1;		// force face culling to set next time

	// we will only draw a sun if there was sky rendered in this view
	backEnd.skyRenderedThisView = qfalse;

	// clip to the plane of the portal
	if ( backEnd.viewParms.isPortal ) {
		float	plane[4];
		double	plane2[4];

		plane[0] = backEnd.viewParms.portalPlane.normal[0];
		plane[1] = backEnd.viewParms.portalPlane.normal[1];
		plane[2] = backEnd.viewParms.portalPlane.normal[2];
		plane[3] = backEnd.viewParms.portalPlane.dist;

		plane2[0] = DotProduct (backEnd.viewParms.ori.axis[0], plane);
		plane2[1] = DotProduct (backEnd.viewParms.ori.axis[1], plane);
		plane2[2] = DotProduct (backEnd.viewParms.ori.axis[2], plane);
		plane2[3] = DotProduct (plane, backEnd.viewParms.ori.origin) - plane[3];

		qglLoadMatrixf( s_flipMatrix );
		qglClipPlane (GL_CLIP_PLANE0, plane2);
		qglEnable (GL_CLIP_PLANE0);
	} else {
		qglDisable (GL_CLIP_PLANE0);
	}
}
示例#5
0
/*
 ==================
 GL_Setup3D

 TODO: time is messed up
 ==================
*/
void GL_Setup3D (int time){

	double	clipPlane[4];

	QGL_LogPrintf("---------- RB_Setup3D ----------\n");

	backEnd.projection2D = false;

	backEnd.time = time;
	backEnd.floatTime = MS2SEC(Sys_Milliseconds());

	backEnd.viewport.x = backEnd.viewParms.viewport.x;
	backEnd.viewport.y = backEnd.viewParms.viewport.y;
	backEnd.viewport.width = backEnd.viewParms.viewport.width;
	backEnd.viewport.height = backEnd.viewParms.viewport.height;

	backEnd.scissor.x = backEnd.viewParms.scissor.x;
	backEnd.scissor.y = backEnd.viewParms.scissor.y;
	backEnd.scissor.width = backEnd.viewParms.scissor.width;
	backEnd.scissor.height = backEnd.viewParms.scissor.height;

	backEnd.coordScale[0] = 1.0f / backEnd.viewport.width;
	backEnd.coordScale[1] = 1.0f / backEnd.viewport.height;

	backEnd.coordBias[0] = -backEnd.viewport.x * backEnd.coordScale[0];
	backEnd.coordBias[1] = -backEnd.viewport.y * backEnd.coordScale[1];

	backEnd.depthFilling = false;
	backEnd.debugRendering = false;

	backEnd.currentColorCaptured = SORT_BAD;
	backEnd.currentDepthCaptured = false;

	// Set up the viewport
	GL_Viewport(backEnd.viewport);

	// Set up the scissor
	GL_Scissor(backEnd.viewport);

	// Set up the depth bounds
	if (glConfig.depthBoundsTestAvailable)
		GL_DepthBounds(0.0f, 1.0f);

	// Set the projection matrix
	GL_LoadMatrix(GL_PROJECTION, backEnd.viewParms.projectionMatrix);

	// Set the modelview matrix
	GL_LoadIdentity(GL_MODELVIEW);

	// Set the GL state
	GL_PolygonMode(GL_FILL);

	GL_Disable(GL_CULL_FACE);
	GL_Disable(GL_POLYGON_OFFSET_FILL);
	GL_Disable(GL_BLEND);
	GL_Disable(GL_ALPHA_TEST);
	GL_Disable(GL_DEPTH_TEST);
	GL_Disable(GL_STENCIL_TEST);

	GL_DepthRange(0.0f, 1.0f);

	GL_ColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
	GL_DepthMask(GL_TRUE);
	GL_StencilMask(255);

	// Enable the clip plane if needed
	if (backEnd.viewParms.viewType != VIEW_MIRROR)
		qglDisable(GL_CLIP_PLANE0);
	else {
		clipPlane[0] = -DotProduct(backEnd.viewParms.axis[1], backEnd.viewParms.clipPlane.normal);
		clipPlane[1] = DotProduct(backEnd.viewParms.axis[2], backEnd.viewParms.clipPlane.normal);
		clipPlane[2] = -DotProduct(backEnd.viewParms.axis[0], backEnd.viewParms.clipPlane.normal);
		clipPlane[3] = DotProduct(backEnd.viewParms.origin, backEnd.viewParms.clipPlane.normal) - backEnd.viewParms.clipPlane.dist;

		qglEnable(GL_CLIP_PLANE0);
		qglClipPlane(GL_CLIP_PLANE0, clipPlane);
	}

	// Enable multisampling if available
	if (glConfig.multiSamples > 1)
		qglEnable(GL_MULTISAMPLE);

	// Clear the buffers
	qglClearColor(0.0f, 0.0f, 0.0f, 1.0f);
	qglClearDepth(1.0f);
	qglClearStencil(0);

	if (backEnd.viewParms.primaryView)
		qglClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
	else
		qglClear(GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);

	// Check for errors
	if (!r_ignoreGLErrors->integerValue)
		GL_CheckForErrors();

	QGL_LogPrintf("--------------------\n");
}