Added Rend2, an alternate renderer. (Bug #4358)

1 files changed, 539 insertions, 0 deletions

diff --git a/src/rend2/tr_scene.c b/src/rend2/tr_scene.c
new file mode 100644
index 00000000..20f90547
--- /dev/null
+++ b/src/rend2/tr_scene.c
@@ -0,0 +1,539 @@
+/*
+===========================================================================
+Copyright (C) 1999-2005 Id Software, Inc.
+
+This file is part of Quake III Arena source code.
+
+Quake III Arena source code is free software; you can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation; either version 2 of the License,
+or (at your option) any later version.
+
+Quake III Arena source code is distributed in the hope that it will be
+useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Quake III Arena source code; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+===========================================================================
+*/
+
+#include "tr_local.h"
+
+int			r_firstSceneDrawSurf;
+
+int			r_numdlights;
+int			r_firstSceneDlight;
+
+int			r_numentities;
+int			r_firstSceneEntity;
+
+int			r_numpolys;
+int			r_firstScenePoly;
+
+int			r_numpolyverts;
+
+
+/*
+====================
+R_ToggleSmpFrame
+
+====================
+*/
+void R_ToggleSmpFrame( void ) {
+	if ( r_smp->integer ) {
+		// use the other buffers next frame, because another CPU
+		// may still be rendering into the current ones
+		tr.smpFrame ^= 1;
+	} else {
+		tr.smpFrame = 0;
+	}
+
+	backEndData[tr.smpFrame]->commands.used = 0;
+
+	r_firstSceneDrawSurf = 0;
+
+	r_numdlights = 0;
+	r_firstSceneDlight = 0;
+
+	r_numentities = 0;
+	r_firstSceneEntity = 0;
+
+	r_numpolys = 0;
+	r_firstScenePoly = 0;
+
+	r_numpolyverts = 0;
+}
+
+
+/*
+====================
+RE_ClearScene
+
+====================
+*/
+void RE_ClearScene( void ) {
+	r_firstSceneDlight = r_numdlights;
+	r_firstSceneEntity = r_numentities;
+	r_firstScenePoly = r_numpolys;
+}
+
+/*
+===========================================================================
+
+DISCRETE POLYS
+
+===========================================================================
+*/
+
+/*
+=====================
+R_AddPolygonSurfaces
+
+Adds all the scene's polys into this view's drawsurf list
+=====================
+*/
+void R_AddPolygonSurfaces( void ) {
+	int			i;
+	shader_t	*sh;
+	srfPoly_t	*poly;
+// JBravo: Fog fixes
+	int		fogMask;
+
+	tr.currentEntityNum = REFENTITYNUM_WORLD;
+	tr.shiftedEntityNum = tr.currentEntityNum << QSORT_REFENTITYNUM_SHIFT;
+	fogMask = -((tr.refdef.rdflags & RDF_NOFOG) == 0);
+
+	for ( i = 0, poly = tr.refdef.polys; i < tr.refdef.numPolys ; i++, poly++ ) {
+		sh = R_GetShaderByHandle( poly->hShader );
+		R_AddDrawSurf( ( void * )poly, sh, poly->fogIndex & fogMask, qfalse, qfalse );
+	}
+}
+
+/*
+=====================
+RE_AddPolyToScene
+
+=====================
+*/
+void RE_AddPolyToScene( qhandle_t hShader, int numVerts, const polyVert_t *verts, int numPolys ) {
+	srfPoly_t	*poly;
+	int			i, j;
+	int			fogIndex;
+	fog_t		*fog;
+	vec3_t		bounds[2];
+
+	if ( !tr.registered ) {
+		return;
+	}
+
+	if ( !hShader ) {
+		// This isn't a useful warning, and an hShader of zero isn't a null shader, it's
+		// the default shader.
+		//ri.Printf( PRINT_WARNING, "WARNING: RE_AddPolyToScene: NULL poly shader\n");
+		//return;
+	}
+
+	for ( j = 0; j < numPolys; j++ ) {
+		if ( r_numpolyverts + numVerts > max_polyverts || r_numpolys >= max_polys ) {
+      /*
+      NOTE TTimo this was initially a PRINT_WARNING
+      but it happens a lot with high fighting scenes and particles
+      since we don't plan on changing the const and making for room for those effects
+      simply cut this message to developer only
+      */
+			ri.Printf( PRINT_DEVELOPER, "WARNING: RE_AddPolyToScene: r_max_polys or r_max_polyverts reached\n");
+			return;
+		}
+
+		poly = &backEndData[tr.smpFrame]->polys[r_numpolys];
+		poly->surfaceType = SF_POLY;
+		poly->hShader = hShader;
+		poly->numVerts = numVerts;
+		poly->verts = &backEndData[tr.smpFrame]->polyVerts[r_numpolyverts];
+		
+		Com_Memcpy( poly->verts, &verts[numVerts*j], numVerts * sizeof( *verts ) );
+
+		if ( glConfig.hardwareType == GLHW_RAGEPRO ) {
+			poly->verts->modulate[0] = 255;
+			poly->verts->modulate[1] = 255;
+			poly->verts->modulate[2] = 255;
+			poly->verts->modulate[3] = 255;
+		}
+		// done.
+		r_numpolys++;
+		r_numpolyverts += numVerts;
+
+		// if no world is loaded
+		if ( tr.world == NULL ) {
+			fogIndex = 0;
+		}
+		// see if it is in a fog volume
+		else if ( tr.world->numfogs == 1 ) {
+			fogIndex = 0;
+		} else {
+			// find which fog volume the poly is in
+			VectorCopy( poly->verts[0].xyz, bounds[0] );
+			VectorCopy( poly->verts[0].xyz, bounds[1] );
+			for ( i = 1 ; i < poly->numVerts ; i++ ) {
+				AddPointToBounds( poly->verts[i].xyz, bounds[0], bounds[1] );
+			}
+			for ( fogIndex = 1 ; fogIndex < tr.world->numfogs ; fogIndex++ ) {
+				fog = &tr.world->fogs[fogIndex]; 
+				if ( bounds[1][0] >= fog->bounds[0][0]
+					&& bounds[1][1] >= fog->bounds[0][1]
+					&& bounds[1][2] >= fog->bounds[0][2]
+					&& bounds[0][0] <= fog->bounds[1][0]
+					&& bounds[0][1] <= fog->bounds[1][1]
+					&& bounds[0][2] <= fog->bounds[1][2] ) {
+					break;
+				}
+			}
+			if ( fogIndex == tr.world->numfogs ) {
+				fogIndex = 0;
+			}
+		}
+		poly->fogIndex = fogIndex;
+	}
+}
+
+
+//=================================================================================
+
+
+/*
+=====================
+RE_AddRefEntityToScene
+
+=====================
+*/
+void RE_AddRefEntityToScene( const refEntity_t *ent ) {
+#ifdef REACTION
+	// JBravo: Mirrored models
+	vec3_t cross;
+#endif
+
+	if ( !tr.registered ) {
+		return;
+	}
+	if ( r_numentities >= MAX_REFENTITIES ) {
+		ri.Printf(PRINT_DEVELOPER, "RE_AddRefEntityToScene: Dropping refEntity, reached MAX_REFENTITIES\n");
+		return;
+	}
+	if ( Q_isnan(ent->origin[0]) || Q_isnan(ent->origin[1]) || Q_isnan(ent->origin[2]) ) {
+		static qboolean firstTime = qtrue;
+		if (firstTime) {
+			firstTime = qfalse;
+			ri.Printf( PRINT_WARNING, "RE_AddRefEntityToScene passed a refEntity which has an origin with a NaN component\n");
+		}
+		return;
+	}
+	if ( (int)ent->reType < 0 || ent->reType >= RT_MAX_REF_ENTITY_TYPE ) {
+		ri.Error( ERR_DROP, "RE_AddRefEntityToScene: bad reType %i", ent->reType );
+	}
+
+	backEndData[tr.smpFrame]->entities[r_numentities].e = *ent;
+	backEndData[tr.smpFrame]->entities[r_numentities].lightingCalculated = qfalse;
+
+#ifdef REACTION
+	// JBravo: Mirrored models
+	CrossProduct(ent->axis[0], ent->axis[1], cross);
+	backEndData[tr.smpFrame]->entities[r_numentities].mirrored = (DotProduct(ent->axis[2], cross) < 0.f);
+#endif
+
+	r_numentities++;
+}
+
+
+/*
+=====================
+RE_AddDynamicLightToScene
+
+=====================
+*/
+void RE_AddDynamicLightToScene( const vec3_t org, float intensity, float r, float g, float b, int additive ) {
+	dlight_t	*dl;
+
+	if ( !tr.registered ) {
+		return;
+	}
+	if ( r_numdlights >= MAX_DLIGHTS ) {
+		return;
+	}
+	if ( intensity <= 0 ) {
+		return;
+	}
+	// these cards don't have the correct blend mode
+	if ( glConfig.hardwareType == GLHW_RIVA128 || glConfig.hardwareType == GLHW_PERMEDIA2 ) {
+		return;
+	}
+	dl = &backEndData[tr.smpFrame]->dlights[r_numdlights++];
+	VectorCopy (org, dl->origin);
+	dl->radius = intensity;
+	dl->color[0] = r;
+	dl->color[1] = g;
+	dl->color[2] = b;
+	dl->additive = additive;
+}
+
+/*
+=====================
+RE_AddLightToScene
+
+=====================
+*/
+void RE_AddLightToScene( const vec3_t org, float intensity, float r, float g, float b ) {
+	RE_AddDynamicLightToScene( org, intensity, r, g, b, qfalse );
+}
+
+/*
+=====================
+RE_AddAdditiveLightToScene
+
+=====================
+*/
+void RE_AddAdditiveLightToScene( const vec3_t org, float intensity, float r, float g, float b ) {
+	RE_AddDynamicLightToScene( org, intensity, r, g, b, qtrue );
+}
+
+/*
+@@@@@@@@@@@@@@@@@@@@@
+RE_RenderScene
+
+Draw a 3D view into a part of the window, then return
+to 2D drawing.
+
+Rendering a scene may require multiple views to be rendered
+to handle mirrors,
+@@@@@@@@@@@@@@@@@@@@@
+*/
+void RE_RenderScene( const refdef_t *fd ) {
+	viewParms_t		parms;
+	int				startTime;
+
+	if ( !tr.registered ) {
+		return;
+	}
+	GLimp_LogComment( "====== RE_RenderScene =====\n" );
+
+	if ( r_norefresh->integer ) {
+		return;
+	}
+
+	startTime = ri.Milliseconds();
+
+	if (!tr.world && !( fd->rdflags & RDF_NOWORLDMODEL ) ) {
+		ri.Error (ERR_DROP, "R_RenderScene: NULL worldmodel");
+	}
+
+	Com_Memcpy( tr.refdef.text, fd->text, sizeof( tr.refdef.text ) );
+
+	tr.refdef.x = fd->x;
+	tr.refdef.y = fd->y;
+	tr.refdef.width = fd->width;
+	tr.refdef.height = fd->height;
+	tr.refdef.fov_x = fd->fov_x;
+	tr.refdef.fov_y = fd->fov_y;
+
+	VectorCopy( fd->vieworg, tr.refdef.vieworg );
+	VectorCopy( fd->viewaxis[0], tr.refdef.viewaxis[0] );
+	VectorCopy( fd->viewaxis[1], tr.refdef.viewaxis[1] );
+	VectorCopy( fd->viewaxis[2], tr.refdef.viewaxis[2] );
+
+	tr.refdef.time = fd->time;
+	tr.refdef.rdflags = fd->rdflags;
+
+	// copy the areamask data over and note if it has changed, which
+	// will force a reset of the visible leafs even if the view hasn't moved
+	tr.refdef.areamaskModified = qfalse;
+	if ( ! (tr.refdef.rdflags & RDF_NOWORLDMODEL) ) {
+		int		areaDiff;
+		int		i;
+
+		// compare the area bits
+		areaDiff = 0;
+		for (i = 0 ; i < MAX_MAP_AREA_BYTES/4 ; i++) {
+			areaDiff |= ((int *)tr.refdef.areamask)[i] ^ ((int *)fd->areamask)[i];
+			((int *)tr.refdef.areamask)[i] = ((int *)fd->areamask)[i];
+		}
+
+		if ( areaDiff ) {
+			// a door just opened or something
+			tr.refdef.areamaskModified = qtrue;
+		}
+	}
+
+	tr.refdef.sunDir[3] = 0.0f;
+	tr.refdef.sunCol[3] = 1.0f;
+	tr.refdef.sunAmbCol[3] = 1.0f;
+
+	VectorCopy(tr.sunDirection, tr.refdef.sunDir);
+	if ( (tr.refdef.rdflags & RDF_NOWORLDMODEL) || !(r_depthPrepass->value) ){
+		tr.refdef.colorScale = 1.0f;
+		VectorSet(tr.refdef.sunCol, 0, 0, 0);
+		VectorSet(tr.refdef.sunAmbCol, 0, 0, 0);
+	}
+	else if (r_forceSun->integer == 1)
+	{
+		float scale = pow(2, r_mapOverBrightBits->integer - tr.overbrightBits - 8);
+		tr.refdef.colorScale = r_forceSunMapLightScale->value;
+		VectorScale(tr.sunLight, scale * r_forceSunLightScale->value, tr.refdef.sunCol);
+		VectorScale(tr.sunLight, scale * r_forceSunAmbientScale->value, tr.refdef.sunAmbCol);
+	}
+	else
+	{
+		float scale = pow(2, r_mapOverBrightBits->integer - tr.overbrightBits - 8);
+		tr.refdef.colorScale = tr.mapLightScale;
+		VectorScale(tr.sunLight,   scale, tr.refdef.sunCol);
+		VectorScale(tr.sunAmbient, scale, tr.refdef.sunAmbCol);
+	}
+
+	if (r_forceAutoExposure->integer)
+	{
+		tr.refdef.autoExposureMinMax[0] = r_forceAutoExposureMin->value;
+		tr.refdef.autoExposureMinMax[1] = r_forceAutoExposureMax->value;
+	}
+	else
+	{
+		tr.refdef.autoExposureMinMax[0] = tr.autoExposureMinMax[0];
+		tr.refdef.autoExposureMinMax[1] = tr.autoExposureMinMax[1];
+	}
+
+	if (r_forceToneMap->integer)
+	{
+		tr.refdef.toneMinAvgMaxLinear[0] = pow(2, r_forceToneMapMin->value);
+		tr.refdef.toneMinAvgMaxLinear[1] = pow(2, r_forceToneMapAvg->value);
+		tr.refdef.toneMinAvgMaxLinear[2] = pow(2, r_forceToneMapMax->value);
+	}
+	else
+	{
+		tr.refdef.toneMinAvgMaxLinear[0] = pow(2, tr.toneMinAvgMaxLevel[0]);
+		tr.refdef.toneMinAvgMaxLinear[1] = pow(2, tr.toneMinAvgMaxLevel[1]);
+		tr.refdef.toneMinAvgMaxLinear[2] = pow(2, tr.toneMinAvgMaxLevel[2]);
+	}
+
+//#ifdef REACTION
+	// Makro - copy exta info if present
+	if (fd->rdflags & RDF_EXTRA) {
+		const refdefex_t* extra = (const refdefex_t*) (fd+1);
+
+		tr.refdef.blurFactor = extra->blurFactor;
+
+		if (fd->rdflags & RDF_SUNLIGHT)
+		{
+			VectorCopy(extra->sunDir,    tr.refdef.sunDir);
+			VectorCopy(extra->sunCol,    tr.refdef.sunCol);
+			VectorCopy(extra->sunAmbCol, tr.refdef.sunAmbCol);
+		}
+	} 
+	else
+	{
+		tr.refdef.blurFactor = 0.0f;
+	}
+//#endif
+
+	// derived info
+
+	tr.refdef.floatTime = tr.refdef.time * 0.001f;
+
+	tr.refdef.numDrawSurfs = r_firstSceneDrawSurf;
+	tr.refdef.drawSurfs = backEndData[tr.smpFrame]->drawSurfs;
+
+	tr.refdef.num_entities = r_numentities - r_firstSceneEntity;
+	tr.refdef.entities = &backEndData[tr.smpFrame]->entities[r_firstSceneEntity];
+
+	tr.refdef.num_dlights = r_numdlights - r_firstSceneDlight;
+	tr.refdef.dlights = &backEndData[tr.smpFrame]->dlights[r_firstSceneDlight];
+
+	tr.refdef.numPolys = r_numpolys - r_firstScenePoly;
+	tr.refdef.polys = &backEndData[tr.smpFrame]->polys[r_firstScenePoly];
+
+	tr.refdef.num_pshadows = 0;
+	tr.refdef.pshadows = &backEndData[tr.smpFrame]->pshadows[0];
+
+	// turn off dynamic lighting globally by clearing all the
+	// dlights if it needs to be disabled or if vertex lighting is enabled
+	if ( r_dynamiclight->integer == 0 ||
+		 r_vertexLight->integer == 1 ||
+		 glConfig.hardwareType == GLHW_PERMEDIA2 ) {
+		tr.refdef.num_dlights = 0;
+	}
+
+	// a single frame may have multiple scenes draw inside it --
+	// a 3D game view, 3D status bar renderings, 3D menus, etc.
+	// They need to be distinguished by the light flare code, because
+	// the visibility state for a given surface may be different in
+	// each scene / view.
+	tr.frameSceneNum++;
+	tr.sceneCount++;
+
+	// SmileTheory: playing with shadow mapping
+	if (!( fd->rdflags & RDF_NOWORLDMODEL ) && tr.refdef.num_dlights && r_dlightMode->integer >= 2)
+	{
+		R_RenderDlightCubemaps(fd);
+	}
+
+	/* playing with more shadows */
+	if(!( fd->rdflags & RDF_NOWORLDMODEL ) && r_shadows->integer == 4)
+	{
+		R_RenderPshadowMaps(fd);
+	}
+
+	// playing with even more shadows
+	if(!( fd->rdflags & RDF_NOWORLDMODEL ) && (r_forceSun->integer || tr.sunShadows))
+	{
+		R_RenderSunShadowMaps(fd, 0);
+		R_RenderSunShadowMaps(fd, 1);
+		R_RenderSunShadowMaps(fd, 2);
+	}
+
+	// setup view parms for the initial view
+	//
+	// set up viewport
+	// The refdef takes 0-at-the-top y coordinates, so
+	// convert to GL's 0-at-the-bottom space
+	//
+	Com_Memset( &parms, 0, sizeof( parms ) );
+	parms.viewportX = tr.refdef.x;
+	parms.viewportY = glConfig.vidHeight - ( tr.refdef.y + tr.refdef.height );
+	parms.viewportWidth = tr.refdef.width;
+	parms.viewportHeight = tr.refdef.height;
+	parms.isPortal = qfalse;
+
+	parms.fovX = tr.refdef.fov_x;
+	parms.fovY = tr.refdef.fov_y;
+	
+	parms.stereoFrame = tr.refdef.stereoFrame;
+
+	if (glRefConfig.framebufferObject)
+	{
+		parms.targetFbo = tr.renderFbo;
+	}
+
+	VectorCopy( fd->vieworg, parms.or.origin );
+	VectorCopy( fd->viewaxis[0], parms.or.axis[0] );
+	VectorCopy( fd->viewaxis[1], parms.or.axis[1] );
+	VectorCopy( fd->viewaxis[2], parms.or.axis[2] );
+
+	VectorCopy( fd->vieworg, parms.pvsOrigin );
+
+	if(!( fd->rdflags & RDF_NOWORLDMODEL ) && r_depthPrepass->value && ((r_forceSun->integer) || tr.sunShadows))
+	{
+		parms.flags = VPF_USESUNLIGHT;
+	}
+
+	R_RenderView( &parms );
+
+	if(!( fd->rdflags & RDF_NOWORLDMODEL ))
+		R_AddPostProcessCmd();
+
+	// the next scene rendered in this frame will tack on after this one
+	r_firstSceneDrawSurf = tr.refdef.numDrawSurfs;
+	r_firstSceneEntity = r_numentities;
+	r_firstSceneDlight = r_numdlights;
+	r_firstScenePoly = r_numpolys;
+
+	tr.frontEndMsec += ri.Milliseconds() - startTime;
+}