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Diffstat (limited to 'ioq3-r437/src/renderer/tr_main.c')
| -rw-r--r-- | ioq3-r437/src/renderer/tr_main.c | 1344 |
1 files changed, 0 insertions, 1344 deletions
diff --git a/ioq3-r437/src/renderer/tr_main.c b/ioq3-r437/src/renderer/tr_main.c deleted file mode 100644 index 61112484..00000000 --- a/ioq3-r437/src/renderer/tr_main.c +++ /dev/null @@ -1,1344 +0,0 @@ -/* -=========================================================================== -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 -=========================================================================== -*/ -// tr_main.c -- main control flow for each frame - -#include "tr_local.h" - -#include <string.h> // memcpy - -trGlobals_t tr; - -static float s_flipMatrix[16] = { - // convert from our coordinate system (looking down X) - // to OpenGL's coordinate system (looking down -Z) - 0, 0, -1, 0, - -1, 0, 0, 0, - 0, 1, 0, 0, - 0, 0, 0, 1 -}; - - -refimport_t ri; - -// entities that will have procedurally generated surfaces will just -// point at this for their sorting surface -surfaceType_t entitySurface = SF_ENTITY; - -/* -================= -R_CullLocalBox - -Returns CULL_IN, CULL_CLIP, or CULL_OUT -================= -*/ -int R_CullLocalBox (vec3_t bounds[2]) { - int i, j; - vec3_t transformed[8]; - float dists[8]; - vec3_t v; - cplane_t *frust; - int anyBack; - int front, back; - - if ( r_nocull->integer ) { - return CULL_CLIP; - } - - // transform into world space - for (i = 0 ; i < 8 ; i++) { - v[0] = bounds[i&1][0]; - v[1] = bounds[(i>>1)&1][1]; - v[2] = bounds[(i>>2)&1][2]; - - VectorCopy( tr.or.origin, transformed[i] ); - VectorMA( transformed[i], v[0], tr.or.axis[0], transformed[i] ); - VectorMA( transformed[i], v[1], tr.or.axis[1], transformed[i] ); - VectorMA( transformed[i], v[2], tr.or.axis[2], transformed[i] ); - } - - // check against frustum planes - anyBack = 0; - for (i = 0 ; i < 4 ; i++) { - frust = &tr.viewParms.frustum[i]; - - front = back = 0; - for (j = 0 ; j < 8 ; j++) { - dists[j] = DotProduct(transformed[j], frust->normal); - if ( dists[j] > frust->dist ) { - front = 1; - if ( back ) { - break; // a point is in front - } - } else { - back = 1; - } - } - if ( !front ) { - // all points were behind one of the planes - return CULL_OUT; - } - anyBack |= back; - } - - if ( !anyBack ) { - return CULL_IN; // completely inside frustum - } - - return CULL_CLIP; // partially clipped -} - -/* -** R_CullLocalPointAndRadius -*/ -int R_CullLocalPointAndRadius( vec3_t pt, float radius ) -{ - vec3_t transformed; - - R_LocalPointToWorld( pt, transformed ); - - return R_CullPointAndRadius( transformed, radius ); -} - -/* -** R_CullPointAndRadius -*/ -int R_CullPointAndRadius( vec3_t pt, float radius ) -{ - int i; - float dist; - cplane_t *frust; - qboolean mightBeClipped = qfalse; - - if ( r_nocull->integer ) { - return CULL_CLIP; - } - - // check against frustum planes - for (i = 0 ; i < 4 ; i++) - { - frust = &tr.viewParms.frustum[i]; - - dist = DotProduct( pt, frust->normal) - frust->dist; - if ( dist < -radius ) - { - return CULL_OUT; - } - else if ( dist <= radius ) - { - mightBeClipped = qtrue; - } - } - - if ( mightBeClipped ) - { - return CULL_CLIP; - } - - return CULL_IN; // completely inside frustum -} - - -/* -================= -R_LocalNormalToWorld - -================= -*/ -void R_LocalNormalToWorld (vec3_t local, vec3_t world) { - world[0] = local[0] * tr.or.axis[0][0] + local[1] * tr.or.axis[1][0] + local[2] * tr.or.axis[2][0]; - world[1] = local[0] * tr.or.axis[0][1] + local[1] * tr.or.axis[1][1] + local[2] * tr.or.axis[2][1]; - world[2] = local[0] * tr.or.axis[0][2] + local[1] * tr.or.axis[1][2] + local[2] * tr.or.axis[2][2]; -} - -/* -================= -R_LocalPointToWorld - -================= -*/ -void R_LocalPointToWorld (vec3_t local, vec3_t world) { - world[0] = local[0] * tr.or.axis[0][0] + local[1] * tr.or.axis[1][0] + local[2] * tr.or.axis[2][0] + tr.or.origin[0]; - world[1] = local[0] * tr.or.axis[0][1] + local[1] * tr.or.axis[1][1] + local[2] * tr.or.axis[2][1] + tr.or.origin[1]; - world[2] = local[0] * tr.or.axis[0][2] + local[1] * tr.or.axis[1][2] + local[2] * tr.or.axis[2][2] + tr.or.origin[2]; -} - -/* -================= -R_WorldToLocal - -================= -*/ -void R_WorldToLocal (vec3_t world, vec3_t local) { - local[0] = DotProduct(world, tr.or.axis[0]); - local[1] = DotProduct(world, tr.or.axis[1]); - local[2] = DotProduct(world, tr.or.axis[2]); -} - -/* -========================== -R_TransformModelToClip - -========================== -*/ -void R_TransformModelToClip( const vec3_t src, const float *modelMatrix, const float *projectionMatrix, - vec4_t eye, vec4_t dst ) { - int i; - - for ( i = 0 ; i < 4 ; i++ ) { - eye[i] = - src[0] * modelMatrix[ i + 0 * 4 ] + - src[1] * modelMatrix[ i + 1 * 4 ] + - src[2] * modelMatrix[ i + 2 * 4 ] + - 1 * modelMatrix[ i + 3 * 4 ]; - } - - for ( i = 0 ; i < 4 ; i++ ) { - dst[i] = - eye[0] * projectionMatrix[ i + 0 * 4 ] + - eye[1] * projectionMatrix[ i + 1 * 4 ] + - eye[2] * projectionMatrix[ i + 2 * 4 ] + - eye[3] * projectionMatrix[ i + 3 * 4 ]; - } -} - -/* -========================== -R_TransformClipToWindow - -========================== -*/ -void R_TransformClipToWindow( const vec4_t clip, const viewParms_t *view, vec4_t normalized, vec4_t window ) { - normalized[0] = clip[0] / clip[3]; - normalized[1] = clip[1] / clip[3]; - normalized[2] = ( clip[2] + clip[3] ) / ( 2 * clip[3] ); - - window[0] = 0.5f * ( 1.0f + normalized[0] ) * view->viewportWidth; - window[1] = 0.5f * ( 1.0f + normalized[1] ) * view->viewportHeight; - window[2] = normalized[2]; - - window[0] = (int) ( window[0] + 0.5 ); - window[1] = (int) ( window[1] + 0.5 ); -} - - -/* -========================== -myGlMultMatrix - -========================== -*/ -void myGlMultMatrix( const float *a, const float *b, float *out ) { - int i, j; - - for ( i = 0 ; i < 4 ; i++ ) { - for ( j = 0 ; j < 4 ; j++ ) { - out[ i * 4 + j ] = - a [ i * 4 + 0 ] * b [ 0 * 4 + j ] - + a [ i * 4 + 1 ] * b [ 1 * 4 + j ] - + a [ i * 4 + 2 ] * b [ 2 * 4 + j ] - + a [ i * 4 + 3 ] * b [ 3 * 4 + j ]; - } - } -} - -/* -================= -R_RotateForEntity - -Generates an orientation for an entity and viewParms -Does NOT produce any GL calls -Called by both the front end and the back end -================= -*/ -void R_RotateForEntity( const trRefEntity_t *ent, const viewParms_t *viewParms, - orientationr_t *or ) { - float glMatrix[16]; - vec3_t delta; - float axisLength; - - if ( ent->e.reType != RT_MODEL ) { - *or = viewParms->world; - return; - } - - VectorCopy( ent->e.origin, or->origin ); - - VectorCopy( ent->e.axis[0], or->axis[0] ); - VectorCopy( ent->e.axis[1], or->axis[1] ); - VectorCopy( ent->e.axis[2], or->axis[2] ); - - glMatrix[0] = or->axis[0][0]; - glMatrix[4] = or->axis[1][0]; - glMatrix[8] = or->axis[2][0]; - glMatrix[12] = or->origin[0]; - - glMatrix[1] = or->axis[0][1]; - glMatrix[5] = or->axis[1][1]; - glMatrix[9] = or->axis[2][1]; - glMatrix[13] = or->origin[1]; - - glMatrix[2] = or->axis[0][2]; - glMatrix[6] = or->axis[1][2]; - glMatrix[10] = or->axis[2][2]; - glMatrix[14] = or->origin[2]; - - glMatrix[3] = 0; - glMatrix[7] = 0; - glMatrix[11] = 0; - glMatrix[15] = 1; - - myGlMultMatrix( glMatrix, viewParms->world.modelMatrix, or->modelMatrix ); - - // calculate the viewer origin in the model's space - // needed for fog, specular, and environment mapping - VectorSubtract( viewParms->or.origin, or->origin, delta ); - - // compensate for scale in the axes if necessary - if ( ent->e.nonNormalizedAxes ) { - axisLength = VectorLength( ent->e.axis[0] ); - if ( !axisLength ) { - axisLength = 0; - } else { - axisLength = 1.0f / axisLength; - } - } else { - axisLength = 1.0f; - } - - or->viewOrigin[0] = DotProduct( delta, or->axis[0] ) * axisLength; - or->viewOrigin[1] = DotProduct( delta, or->axis[1] ) * axisLength; - or->viewOrigin[2] = DotProduct( delta, or->axis[2] ) * axisLength; -} - -/* -================= -R_RotateForViewer - -Sets up the modelview matrix for a given viewParm -================= -*/ -void R_RotateForViewer (void) -{ - float viewerMatrix[16]; - vec3_t origin; - - Com_Memset (&tr.or, 0, sizeof(tr.or)); - tr.or.axis[0][0] = 1; - tr.or.axis[1][1] = 1; - tr.or.axis[2][2] = 1; - VectorCopy (tr.viewParms.or.origin, tr.or.viewOrigin); - - // transform by the camera placement - VectorCopy( tr.viewParms.or.origin, origin ); - - viewerMatrix[0] = tr.viewParms.or.axis[0][0]; - viewerMatrix[4] = tr.viewParms.or.axis[0][1]; - viewerMatrix[8] = tr.viewParms.or.axis[0][2]; - viewerMatrix[12] = -origin[0] * viewerMatrix[0] + -origin[1] * viewerMatrix[4] + -origin[2] * viewerMatrix[8]; - - viewerMatrix[1] = tr.viewParms.or.axis[1][0]; - viewerMatrix[5] = tr.viewParms.or.axis[1][1]; - viewerMatrix[9] = tr.viewParms.or.axis[1][2]; - viewerMatrix[13] = -origin[0] * viewerMatrix[1] + -origin[1] * viewerMatrix[5] + -origin[2] * viewerMatrix[9]; - - viewerMatrix[2] = tr.viewParms.or.axis[2][0]; - viewerMatrix[6] = tr.viewParms.or.axis[2][1]; - viewerMatrix[10] = tr.viewParms.or.axis[2][2]; - viewerMatrix[14] = -origin[0] * viewerMatrix[2] + -origin[1] * viewerMatrix[6] + -origin[2] * viewerMatrix[10]; - - viewerMatrix[3] = 0; - viewerMatrix[7] = 0; - viewerMatrix[11] = 0; - viewerMatrix[15] = 1; - - // convert from our coordinate system (looking down X) - // to OpenGL's coordinate system (looking down -Z) - myGlMultMatrix( viewerMatrix, s_flipMatrix, tr.or.modelMatrix ); - - tr.viewParms.world = tr.or; - -} - -/* -** SetFarClip -*/ -static void SetFarClip( void ) -{ - float farthestCornerDistance = 0; - int i; - - // if not rendering the world (icons, menus, etc) - // set a 2k far clip plane - if ( tr.refdef.rdflags & RDF_NOWORLDMODEL ) { - tr.viewParms.zFar = 2048; - return; - } - - // - // set far clipping planes dynamically - // - farthestCornerDistance = 0; - for ( i = 0; i < 8; i++ ) - { - vec3_t v; - vec3_t vecTo; - float distance; - - if ( i & 1 ) - { - v[0] = tr.viewParms.visBounds[0][0]; - } - else - { - v[0] = tr.viewParms.visBounds[1][0]; - } - - if ( i & 2 ) - { - v[1] = tr.viewParms.visBounds[0][1]; - } - else - { - v[1] = tr.viewParms.visBounds[1][1]; - } - - if ( i & 4 ) - { - v[2] = tr.viewParms.visBounds[0][2]; - } - else - { - v[2] = tr.viewParms.visBounds[1][2]; - } - - VectorSubtract( v, tr.viewParms.or.origin, vecTo ); - - distance = vecTo[0] * vecTo[0] + vecTo[1] * vecTo[1] + vecTo[2] * vecTo[2]; - - if ( distance > farthestCornerDistance ) - { - farthestCornerDistance = distance; - } - } - tr.viewParms.zFar = sqrt( farthestCornerDistance ); -} - - -/* -=============== -R_SetupProjection -=============== -*/ -void R_SetupProjection( void ) { - float xmin, xmax, ymin, ymax; - float width, height, depth; - float zNear, zFar; - - // dynamically compute far clip plane distance - SetFarClip(); - - // - // set up projection matrix - // - zNear = r_znear->value; - zFar = tr.viewParms.zFar; - - ymax = zNear * tan( tr.refdef.fov_y * M_PI / 360.0f ); - ymin = -ymax; - - xmax = zNear * tan( tr.refdef.fov_x * M_PI / 360.0f ); - xmin = -xmax; - - width = xmax - xmin; - height = ymax - ymin; - depth = zFar - zNear; - - tr.viewParms.projectionMatrix[0] = 2 * zNear / width; - tr.viewParms.projectionMatrix[4] = 0; - tr.viewParms.projectionMatrix[8] = ( xmax + xmin ) / width; // normally 0 - tr.viewParms.projectionMatrix[12] = 0; - - tr.viewParms.projectionMatrix[1] = 0; - tr.viewParms.projectionMatrix[5] = 2 * zNear / height; - tr.viewParms.projectionMatrix[9] = ( ymax + ymin ) / height; // normally 0 - tr.viewParms.projectionMatrix[13] = 0; - - tr.viewParms.projectionMatrix[2] = 0; - tr.viewParms.projectionMatrix[6] = 0; - tr.viewParms.projectionMatrix[10] = -( zFar + zNear ) / depth; - tr.viewParms.projectionMatrix[14] = -2 * zFar * zNear / depth; - - tr.viewParms.projectionMatrix[3] = 0; - tr.viewParms.projectionMatrix[7] = 0; - tr.viewParms.projectionMatrix[11] = -1; - tr.viewParms.projectionMatrix[15] = 0; -} - -/* -================= -R_SetupFrustum - -Setup that culling frustum planes for the current view -================= -*/ -void R_SetupFrustum (void) { - int i; - float xs, xc; - float ang; - - ang = tr.viewParms.fovX / 180 * M_PI * 0.5f; - xs = sin( ang ); - xc = cos( ang ); - - VectorScale( tr.viewParms.or.axis[0], xs, tr.viewParms.frustum[0].normal ); - VectorMA( tr.viewParms.frustum[0].normal, xc, tr.viewParms.or.axis[1], tr.viewParms.frustum[0].normal ); - - VectorScale( tr.viewParms.or.axis[0], xs, tr.viewParms.frustum[1].normal ); - VectorMA( tr.viewParms.frustum[1].normal, -xc, tr.viewParms.or.axis[1], tr.viewParms.frustum[1].normal ); - - ang = tr.viewParms.fovY / 180 * M_PI * 0.5f; - xs = sin( ang ); - xc = cos( ang ); - - VectorScale( tr.viewParms.or.axis[0], xs, tr.viewParms.frustum[2].normal ); - VectorMA( tr.viewParms.frustum[2].normal, xc, tr.viewParms.or.axis[2], tr.viewParms.frustum[2].normal ); - - VectorScale( tr.viewParms.or.axis[0], xs, tr.viewParms.frustum[3].normal ); - VectorMA( tr.viewParms.frustum[3].normal, -xc, tr.viewParms.or.axis[2], tr.viewParms.frustum[3].normal ); - - for (i=0 ; i<4 ; i++) { - tr.viewParms.frustum[i].type = PLANE_NON_AXIAL; - tr.viewParms.frustum[i].dist = DotProduct (tr.viewParms.or.origin, tr.viewParms.frustum[i].normal); - SetPlaneSignbits( &tr.viewParms.frustum[i] ); - } -} - - -/* -================= -R_MirrorPoint -================= -*/ -void R_MirrorPoint (vec3_t in, orientation_t *surface, orientation_t *camera, vec3_t out) { - int i; - vec3_t local; - vec3_t transformed; - float d; - - VectorSubtract( in, surface->origin, local ); - - VectorClear( transformed ); - for ( i = 0 ; i < 3 ; i++ ) { - d = DotProduct(local, surface->axis[i]); - VectorMA( transformed, d, camera->axis[i], transformed ); - } - - VectorAdd( transformed, camera->origin, out ); -} - -void R_MirrorVector (vec3_t in, orientation_t *surface, orientation_t *camera, vec3_t out) { - int i; - float d; - - VectorClear( out ); - for ( i = 0 ; i < 3 ; i++ ) { - d = DotProduct(in, surface->axis[i]); - VectorMA( out, d, camera->axis[i], out ); - } -} - - -/* -============= -R_PlaneForSurface -============= -*/ -void R_PlaneForSurface (surfaceType_t *surfType, cplane_t *plane) { - srfTriangles_t *tri; - srfPoly_t *poly; - drawVert_t *v1, *v2, *v3; - vec4_t plane4; - - if (!surfType) { - Com_Memset (plane, 0, sizeof(*plane)); - plane->normal[0] = 1; - return; - } - switch (*surfType) { - case SF_FACE: - *plane = ((srfSurfaceFace_t *)surfType)->plane; - return; - case SF_TRIANGLES: - tri = (srfTriangles_t *)surfType; - v1 = tri->verts + tri->indexes[0]; - v2 = tri->verts + tri->indexes[1]; - v3 = tri->verts + tri->indexes[2]; - PlaneFromPoints( plane4, v1->xyz, v2->xyz, v3->xyz ); - VectorCopy( plane4, plane->normal ); - plane->dist = plane4[3]; - return; - case SF_POLY: - poly = (srfPoly_t *)surfType; - PlaneFromPoints( plane4, poly->verts[0].xyz, poly->verts[1].xyz, poly->verts[2].xyz ); - VectorCopy( plane4, plane->normal ); - plane->dist = plane4[3]; - return; - default: - Com_Memset (plane, 0, sizeof(*plane)); - plane->normal[0] = 1; - return; - } -} - -/* -================= -R_GetPortalOrientation - -entityNum is the entity that the portal surface is a part of, which may -be moving and rotating. - -Returns qtrue if it should be mirrored -================= -*/ -qboolean R_GetPortalOrientations( drawSurf_t *drawSurf, int entityNum, - orientation_t *surface, orientation_t *camera, - vec3_t pvsOrigin, qboolean *mirror ) { - int i; - cplane_t originalPlane, plane; - trRefEntity_t *e; - float d; - vec3_t transformed; - - // create plane axis for the portal we are seeing - R_PlaneForSurface( drawSurf->surface, &originalPlane ); - - // rotate the plane if necessary - if ( entityNum != ENTITYNUM_WORLD ) { - tr.currentEntityNum = entityNum; - tr.currentEntity = &tr.refdef.entities[entityNum]; - - // get the orientation of the entity - R_RotateForEntity( tr.currentEntity, &tr.viewParms, &tr.or ); - - // rotate the plane, but keep the non-rotated version for matching - // against the portalSurface entities - R_LocalNormalToWorld( originalPlane.normal, plane.normal ); - plane.dist = originalPlane.dist + DotProduct( plane.normal, tr.or.origin ); - - // translate the original plane - originalPlane.dist = originalPlane.dist + DotProduct( originalPlane.normal, tr.or.origin ); - } else { - plane = originalPlane; - } - - VectorCopy( plane.normal, surface->axis[0] ); - PerpendicularVector( surface->axis[1], surface->axis[0] ); - CrossProduct( surface->axis[0], surface->axis[1], surface->axis[2] ); - - // locate the portal entity closest to this plane. - // origin will be the origin of the portal, origin2 will be - // the origin of the camera - for ( i = 0 ; i < tr.refdef.num_entities ; i++ ) { - e = &tr.refdef.entities[i]; - if ( e->e.reType != RT_PORTALSURFACE ) { - continue; - } - - d = DotProduct( e->e.origin, originalPlane.normal ) - originalPlane.dist; - if ( d > 64 || d < -64) { - continue; - } - - // get the pvsOrigin from the entity - VectorCopy( e->e.oldorigin, pvsOrigin ); - - // if the entity is just a mirror, don't use as a camera point - if ( e->e.oldorigin[0] == e->e.origin[0] && - e->e.oldorigin[1] == e->e.origin[1] && - e->e.oldorigin[2] == e->e.origin[2] ) { - VectorScale( plane.normal, plane.dist, surface->origin ); - VectorCopy( surface->origin, camera->origin ); - VectorSubtract( vec3_origin, surface->axis[0], camera->axis[0] ); - VectorCopy( surface->axis[1], camera->axis[1] ); - VectorCopy( surface->axis[2], camera->axis[2] ); - - *mirror = qtrue; - return qtrue; - } - - // project the origin onto the surface plane to get - // an origin point we can rotate around - d = DotProduct( e->e.origin, plane.normal ) - plane.dist; - VectorMA( e->e.origin, -d, surface->axis[0], surface->origin ); - - // now get the camera origin and orientation - VectorCopy( e->e.oldorigin, camera->origin ); - AxisCopy( e->e.axis, camera->axis ); - VectorSubtract( vec3_origin, camera->axis[0], camera->axis[0] ); - VectorSubtract( vec3_origin, camera->axis[1], camera->axis[1] ); - - // optionally rotate - if ( e->e.oldframe ) { - // if a speed is specified - if ( e->e.frame ) { - // continuous rotate - d = (tr.refdef.time/1000.0f) * e->e.frame; - VectorCopy( camera->axis[1], transformed ); - RotatePointAroundVector( camera->axis[1], camera->axis[0], transformed, d ); - CrossProduct( camera->axis[0], camera->axis[1], camera->axis[2] ); - } else { - // bobbing rotate, with skinNum being the rotation offset - d = sin( tr.refdef.time * 0.003f ); - d = e->e.skinNum + d * 4; - VectorCopy( camera->axis[1], transformed ); - RotatePointAroundVector( camera->axis[1], camera->axis[0], transformed, d ); - CrossProduct( camera->axis[0], camera->axis[1], camera->axis[2] ); - } - } - else if ( e->e.skinNum ) { - d = e->e.skinNum; - VectorCopy( camera->axis[1], transformed ); - RotatePointAroundVector( camera->axis[1], camera->axis[0], transformed, d ); - CrossProduct( camera->axis[0], camera->axis[1], camera->axis[2] ); - } - *mirror = qfalse; - return qtrue; - } - - // if we didn't locate a portal entity, don't render anything. - // We don't want to just treat it as a mirror, because without a - // portal entity the server won't have communicated a proper entity set - // in the snapshot - - // unfortunately, with local movement prediction it is easily possible - // to see a surface before the server has communicated the matching - // portal surface entity, so we don't want to print anything here... - - //ri.Printf( PRINT_ALL, "Portal surface without a portal entity\n" ); - - return qfalse; -} - -static qboolean IsMirror( const drawSurf_t *drawSurf, int entityNum ) -{ - int i; - cplane_t originalPlane, plane; - trRefEntity_t *e; - float d; - - // create plane axis for the portal we are seeing - R_PlaneForSurface( drawSurf->surface, &originalPlane ); - - // rotate the plane if necessary - if ( entityNum != ENTITYNUM_WORLD ) - { - tr.currentEntityNum = entityNum; - tr.currentEntity = &tr.refdef.entities[entityNum]; - - // get the orientation of the entity - R_RotateForEntity( tr.currentEntity, &tr.viewParms, &tr.or ); - - // rotate the plane, but keep the non-rotated version for matching - // against the portalSurface entities - R_LocalNormalToWorld( originalPlane.normal, plane.normal ); - plane.dist = originalPlane.dist + DotProduct( plane.normal, tr.or.origin ); - - // translate the original plane - originalPlane.dist = originalPlane.dist + DotProduct( originalPlane.normal, tr.or.origin ); - } - else - { - plane = originalPlane; - } - - // locate the portal entity closest to this plane. - // origin will be the origin of the portal, origin2 will be - // the origin of the camera - for ( i = 0 ; i < tr.refdef.num_entities ; i++ ) - { - e = &tr.refdef.entities[i]; - if ( e->e.reType != RT_PORTALSURFACE ) { - continue; - } - - d = DotProduct( e->e.origin, originalPlane.normal ) - originalPlane.dist; - if ( d > 64 || d < -64) { - continue; - } - - // if the entity is just a mirror, don't use as a camera point - if ( e->e.oldorigin[0] == e->e.origin[0] && - e->e.oldorigin[1] == e->e.origin[1] && - e->e.oldorigin[2] == e->e.origin[2] ) - { - return qtrue; - } - - return qfalse; - } - return qfalse; -} - -/* -** SurfIsOffscreen -** -** Determines if a surface is completely offscreen. -*/ -static qboolean SurfIsOffscreen( const drawSurf_t *drawSurf, vec4_t clipDest[128] ) { - float shortest = 100000000; - int entityNum; - int numTriangles; - shader_t *shader; - int fogNum; - int dlighted; - vec4_t clip, eye; - int i; - unsigned int pointOr = 0; - unsigned int pointAnd = (unsigned int)~0; - - if ( glConfig.smpActive ) { // FIXME! we can't do RB_BeginSurface/RB_EndSurface stuff with smp! - return qfalse; - } - - R_RotateForViewer(); - - R_DecomposeSort( drawSurf->sort, &entityNum, &shader, &fogNum, &dlighted ); - RB_BeginSurface( shader, fogNum ); - rb_surfaceTable[ *drawSurf->surface ]( drawSurf->surface ); - - assert( tess.numVertexes < 128 ); - - for ( i = 0; i < tess.numVertexes; i++ ) - { - int j; - unsigned int pointFlags = 0; - - R_TransformModelToClip( tess.xyz[i], tr.or.modelMatrix, tr.viewParms.projectionMatrix, eye, clip ); - - for ( j = 0; j < 3; j++ ) - { - if ( clip[j] >= clip[3] ) - { - pointFlags |= (1 << (j*2)); - } - else if ( clip[j] <= -clip[3] ) - { - pointFlags |= ( 1 << (j*2+1)); - } - } - pointAnd &= pointFlags; - pointOr |= pointFlags; - } - - // trivially reject - if ( pointAnd ) - { - return qtrue; - } - - // determine if this surface is backfaced and also determine the distance - // to the nearest vertex so we can cull based on portal range. Culling - // based on vertex distance isn't 100% correct (we should be checking for - // range to the surface), but it's good enough for the types of portals - // we have in the game right now. - numTriangles = tess.numIndexes / 3; - - for ( i = 0; i < tess.numIndexes; i += 3 ) - { - vec3_t normal; - float dot; - float len; - - VectorSubtract( tess.xyz[tess.indexes[i]], tr.viewParms.or.origin, normal ); - - len = VectorLengthSquared( normal ); // lose the sqrt - if ( len < shortest ) - { - shortest = len; - } - - if ( ( dot = DotProduct( normal, tess.normal[tess.indexes[i]] ) ) >= 0 ) - { - numTriangles--; - } - } - if ( !numTriangles ) - { - return qtrue; - } - - // mirrors can early out at this point, since we don't do a fade over distance - // with them (although we could) - if ( IsMirror( drawSurf, entityNum ) ) - { - return qfalse; - } - - if ( shortest > (tess.shader->portalRange*tess.shader->portalRange) ) - { - return qtrue; - } - - return qfalse; -} - -/* -======================== -R_MirrorViewBySurface - -Returns qtrue if another view has been rendered -======================== -*/ -qboolean R_MirrorViewBySurface (drawSurf_t *drawSurf, int entityNum) { - vec4_t clipDest[128]; - viewParms_t newParms; - viewParms_t oldParms; - orientation_t surface, camera; - - // don't recursively mirror - if (tr.viewParms.isPortal) { - ri.Printf( PRINT_DEVELOPER, "WARNING: recursive mirror/portal found\n" ); - return qfalse; - } - - if ( r_noportals->integer || (r_fastsky->integer == 1) ) { - return qfalse; - } - - // trivially reject portal/mirror - if ( SurfIsOffscreen( drawSurf, clipDest ) ) { - return qfalse; - } - - // save old viewParms so we can return to it after the mirror view - oldParms = tr.viewParms; - - newParms = tr.viewParms; - newParms.isPortal = qtrue; - if ( !R_GetPortalOrientations( drawSurf, entityNum, &surface, &camera, - newParms.pvsOrigin, &newParms.isMirror ) ) { - return qfalse; // bad portal, no portalentity - } - - R_MirrorPoint (oldParms.or.origin, &surface, &camera, newParms.or.origin ); - - VectorSubtract( vec3_origin, camera.axis[0], newParms.portalPlane.normal ); - newParms.portalPlane.dist = DotProduct( camera.origin, newParms.portalPlane.normal ); - - R_MirrorVector (oldParms.or.axis[0], &surface, &camera, newParms.or.axis[0]); - R_MirrorVector (oldParms.or.axis[1], &surface, &camera, newParms.or.axis[1]); - R_MirrorVector (oldParms.or.axis[2], &surface, &camera, newParms.or.axis[2]); - - // OPTIMIZE: restrict the viewport on the mirrored view - - // render the mirror view - R_RenderView (&newParms); - - tr.viewParms = oldParms; - - return qtrue; -} - -/* -================= -R_SpriteFogNum - -See if a sprite is inside a fog volume -================= -*/ -int R_SpriteFogNum( trRefEntity_t *ent ) { - int i, j; - fog_t *fog; - - if ( tr.refdef.rdflags & RDF_NOWORLDMODEL ) { - return 0; - } - - for ( i = 1 ; i < tr.world->numfogs ; i++ ) { - fog = &tr.world->fogs[i]; - for ( j = 0 ; j < 3 ; j++ ) { - if ( ent->e.origin[j] - ent->e.radius >= fog->bounds[1][j] ) { - break; - } - if ( ent->e.origin[j] + ent->e.radius <= fog->bounds[0][j] ) { - break; - } - } - if ( j == 3 ) { - return i; - } - } - - return 0; -} - -/* -========================================================================================== - -DRAWSURF SORTING - -========================================================================================== -*/ - -/* -=============== -R_Radix -=============== -*/ -static ID_INLINE void R_Radix( int byte, int size, drawSurf_t *source, drawSurf_t *dest ) -{ - int count[ 256 ] = { 0 }; - int index[ 256 ]; - int i; - unsigned char *sortKey = NULL; - unsigned char *end = NULL; - - sortKey = ( (unsigned char *)&source[ 0 ].sort ) + byte; - end = sortKey + ( size * sizeof( drawSurf_t ) ); - for( ; sortKey < end; sortKey += sizeof( drawSurf_t ) ) - ++count[ *sortKey ]; - - index[ 0 ] = 0; - - for( i = 1; i < 256; ++i ) - index[ i ] = index[ i - 1 ] + count[ i - 1 ]; - - sortKey = ( (unsigned char *)&source[ 0 ].sort ) + byte; - for( i = 0; i < size; ++i, sortKey += sizeof( drawSurf_t ) ) - dest[ index[ *sortKey ]++ ] = source[ i ]; -} - -/* -=============== -R_RadixSort - -Radix sort with 4 byte size buckets -=============== -*/ -static void R_RadixSort( drawSurf_t *source, int size ) -{ - static drawSurf_t scratch[ MAX_DRAWSURFS ]; - - R_Radix( 0, size, source, scratch ); - R_Radix( 1, size, scratch, source ); - R_Radix( 2, size, source, scratch ); - R_Radix( 3, size, scratch, source ); -} - -//========================================================================================== - -/* -================= -R_AddDrawSurf -================= -*/ -void R_AddDrawSurf( surfaceType_t *surface, shader_t *shader, - int fogIndex, int dlightMap ) { - int index; - - // instead of checking for overflow, we just mask the index - // so it wraps around - index = tr.refdef.numDrawSurfs & DRAWSURF_MASK; - // the sort data is packed into a single 32 bit value so it can be - // compared quickly during the qsorting process - tr.refdef.drawSurfs[index].sort = (shader->sortedIndex << QSORT_SHADERNUM_SHIFT) - | tr.shiftedEntityNum | ( fogIndex << QSORT_FOGNUM_SHIFT ) | (int)dlightMap; - tr.refdef.drawSurfs[index].surface = surface; - tr.refdef.numDrawSurfs++; -} - -/* -================= -R_DecomposeSort -================= -*/ -void R_DecomposeSort( unsigned sort, int *entityNum, shader_t **shader, - int *fogNum, int *dlightMap ) { - *fogNum = ( sort >> QSORT_FOGNUM_SHIFT ) & 31; - *shader = tr.sortedShaders[ ( sort >> QSORT_SHADERNUM_SHIFT ) & (MAX_SHADERS-1) ]; - *entityNum = ( sort >> QSORT_ENTITYNUM_SHIFT ) & 1023; - *dlightMap = sort & 3; -} - -/* -================= -R_SortDrawSurfs -================= -*/ -void R_SortDrawSurfs( drawSurf_t *drawSurfs, int numDrawSurfs ) { - shader_t *shader; - int fogNum; - int entityNum; - int dlighted; - int i; - - // it is possible for some views to not have any surfaces - if ( numDrawSurfs < 1 ) { - // we still need to add it for hyperspace cases - R_AddDrawSurfCmd( drawSurfs, numDrawSurfs ); - return; - } - - // if we overflowed MAX_DRAWSURFS, the drawsurfs - // wrapped around in the buffer and we will be missing - // the first surfaces, not the last ones - if ( numDrawSurfs > MAX_DRAWSURFS ) { - numDrawSurfs = MAX_DRAWSURFS; - } - - // sort the drawsurfs by sort type, then orientation, then shader - R_RadixSort( drawSurfs, numDrawSurfs ); - - // check for any pass through drawing, which - // may cause another view to be rendered first - for ( i = 0 ; i < numDrawSurfs ; i++ ) { - R_DecomposeSort( (drawSurfs+i)->sort, &entityNum, &shader, &fogNum, &dlighted ); - - if ( shader->sort > SS_PORTAL ) { - break; - } - - // no shader should ever have this sort type - if ( shader->sort == SS_BAD ) { - ri.Error (ERR_DROP, "Shader '%s'with sort == SS_BAD", shader->name ); - } - - // if the mirror was completely clipped away, we may need to check another surface - if ( R_MirrorViewBySurface( (drawSurfs+i), entityNum) ) { - // this is a debug option to see exactly what is being mirrored - if ( r_portalOnly->integer ) { - return; - } - break; // only one mirror view at a time - } - } - - R_AddDrawSurfCmd( drawSurfs, numDrawSurfs ); -} - -/* -============= -R_AddEntitySurfaces -============= -*/ -void R_AddEntitySurfaces (void) { - trRefEntity_t *ent; - shader_t *shader; - - if ( !r_drawentities->integer ) { - return; - } - - for ( tr.currentEntityNum = 0; - tr.currentEntityNum < tr.refdef.num_entities; - tr.currentEntityNum++ ) { - ent = tr.currentEntity = &tr.refdef.entities[tr.currentEntityNum]; - - ent->needDlights = qfalse; - - // preshift the value we are going to OR into the drawsurf sort - tr.shiftedEntityNum = tr.currentEntityNum << QSORT_ENTITYNUM_SHIFT; - - // - // the weapon model must be handled special -- - // we don't want the hacked weapon position showing in - // mirrors, because the true body position will already be drawn - // - if ( (ent->e.renderfx & RF_FIRST_PERSON) && tr.viewParms.isPortal) { - continue; - } - - // simple generated models, like sprites and beams, are not culled - switch ( ent->e.reType ) { - case RT_PORTALSURFACE: - break; // don't draw anything - case RT_SPRITE: - case RT_BEAM: - case RT_LIGHTNING: - case RT_RAIL_CORE: - case RT_RAIL_RINGS: - // self blood sprites, talk balloons, etc should not be drawn in the primary - // view. We can't just do this check for all entities, because md3 - // entities may still want to cast shadows from them - if ( (ent->e.renderfx & RF_THIRD_PERSON) && !tr.viewParms.isPortal) { - continue; - } - shader = R_GetShaderByHandle( ent->e.customShader ); - R_AddDrawSurf( &entitySurface, shader, R_SpriteFogNum( ent ), 0 ); - break; - - case RT_MODEL: - // we must set up parts of tr.or for model culling - R_RotateForEntity( ent, &tr.viewParms, &tr.or ); - - tr.currentModel = R_GetModelByHandle( ent->e.hModel ); - if (!tr.currentModel) { - R_AddDrawSurf( &entitySurface, tr.defaultShader, 0, 0 ); - } else { - switch ( tr.currentModel->type ) { - case MOD_MESH: - R_AddMD3Surfaces( ent ); - break; - case MOD_MD4: - R_AddAnimSurfaces( ent ); - break; -#ifdef RAVENMD4 - case MOD_MDR: - R_MDRAddAnimSurfaces( ent ); - break; -#endif - case MOD_BRUSH: - R_AddBrushModelSurfaces( ent ); - break; - case MOD_BAD: // null model axis - if ( (ent->e.renderfx & RF_THIRD_PERSON) && !tr.viewParms.isPortal) { - break; - } - shader = R_GetShaderByHandle( ent->e.customShader ); - R_AddDrawSurf( &entitySurface, tr.defaultShader, 0, 0 ); - break; - default: - ri.Error( ERR_DROP, "R_AddEntitySurfaces: Bad modeltype" ); - break; - } - } - break; - default: - ri.Error( ERR_DROP, "R_AddEntitySurfaces: Bad reType" ); - } - } - -} - - -/* -==================== -R_GenerateDrawSurfs -==================== -*/ -void R_GenerateDrawSurfs( void ) { - R_AddWorldSurfaces (); - - R_AddPolygonSurfaces(); - - // set the projection matrix with the minimum zfar - // now that we have the world bounded - // this needs to be done before entities are - // added, because they use the projection - // matrix for lod calculation - R_SetupProjection (); - - R_AddEntitySurfaces (); -} - -/* -================ -R_DebugPolygon -================ -*/ -void R_DebugPolygon( int color, int numPoints, float *points ) { - int i; - - GL_State( GLS_DEPTHMASK_TRUE | GLS_SRCBLEND_ONE | GLS_DSTBLEND_ONE ); - - // draw solid shade - - qglColor3f( color&1, (color>>1)&1, (color>>2)&1 ); - qglBegin( GL_POLYGON ); - for ( i = 0 ; i < numPoints ; i++ ) { - qglVertex3fv( points + i * 3 ); - } - qglEnd(); - - // draw wireframe outline - GL_State( GLS_POLYMODE_LINE | GLS_DEPTHMASK_TRUE | GLS_SRCBLEND_ONE | GLS_DSTBLEND_ONE ); - qglDepthRange( 0, 0 ); - qglColor3f( 1, 1, 1 ); - qglBegin( GL_POLYGON ); - for ( i = 0 ; i < numPoints ; i++ ) { - qglVertex3fv( points + i * 3 ); - } - qglEnd(); - qglDepthRange( 0, 1 ); -} - -/* -==================== -R_DebugGraphics - -Visualization aid for movement clipping debugging -==================== -*/ -void R_DebugGraphics( void ) { - if ( !r_debugSurface->integer ) { - return; - } - - // the render thread can't make callbacks to the main thread - R_SyncRenderThread(); - - GL_Bind( tr.whiteImage); - GL_Cull( CT_FRONT_SIDED ); - ri.CM_DrawDebugSurface( R_DebugPolygon ); -} - - -/* -================ -R_RenderView - -A view may be either the actual camera view, -or a mirror / remote location -================ -*/ -void R_RenderView (viewParms_t *parms) { - int firstDrawSurf; - - if ( parms->viewportWidth <= 0 || parms->viewportHeight <= 0 ) { - return; - } - - tr.viewCount++; - - tr.viewParms = *parms; - tr.viewParms.frameSceneNum = tr.frameSceneNum; - tr.viewParms.frameCount = tr.frameCount; - - firstDrawSurf = tr.refdef.numDrawSurfs; - - tr.viewCount++; - - // set viewParms.world - R_RotateForViewer (); - - R_SetupFrustum (); - - R_GenerateDrawSurfs(); - - R_SortDrawSurfs( tr.refdef.drawSurfs + firstDrawSurf, tr.refdef.numDrawSurfs - firstDrawSurf ); - - // draw main system development information (surface outlines, etc) - R_DebugGraphics(); -} - - - |