mirror of
https://github.com/dhewm/dhewm3.git
synced 2024-11-23 12:53:09 +00:00
736ec20d4d
Don't include the lazy precompiled.h everywhere, only what's required for the compilation unit. platform.h needs to be included instead to provide all essential defines and types. All includes use the relative path to the neo or the game specific root. Move all idlib related includes from idlib/Lib.h to precompiled.h. precompiled.h still exists for the MFC stuff in tools/. Add some missing header guards.
572 lines
15 KiB
C++
572 lines
15 KiB
C++
/*
|
|
===========================================================================
|
|
|
|
Doom 3 GPL Source Code
|
|
Copyright (C) 1999-2011 id Software LLC, a ZeniMax Media company.
|
|
|
|
This file is part of the Doom 3 GPL Source Code ("Doom 3 Source Code").
|
|
|
|
Doom 3 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 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
Doom 3 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 Doom 3 Source Code. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
In addition, the Doom 3 Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 Source Code. If not, please request a copy in writing from id Software at the address below.
|
|
|
|
If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
|
|
|
|
===========================================================================
|
|
*/
|
|
|
|
#include "sys/platform.h"
|
|
|
|
#include "renderer/tr_local.h"
|
|
|
|
typedef struct {
|
|
idVec3 origin;
|
|
idMat3 axis;
|
|
} orientation_t;
|
|
|
|
|
|
/*
|
|
=================
|
|
R_MirrorPoint
|
|
=================
|
|
*/
|
|
static void R_MirrorPoint( const idVec3 in, orientation_t *surface, orientation_t *camera, idVec3 &out ) {
|
|
int i;
|
|
idVec3 local;
|
|
idVec3 transformed;
|
|
float d;
|
|
|
|
local = in - surface->origin;
|
|
|
|
transformed = vec3_origin;
|
|
for ( i = 0 ; i < 3 ; i++ ) {
|
|
d = local * surface->axis[i];
|
|
transformed += d * camera->axis[i];
|
|
}
|
|
|
|
out = transformed + camera->origin;
|
|
}
|
|
|
|
/*
|
|
=================
|
|
R_MirrorVector
|
|
=================
|
|
*/
|
|
static void R_MirrorVector( const idVec3 in, orientation_t *surface, orientation_t *camera, idVec3 &out ) {
|
|
int i;
|
|
float d;
|
|
|
|
out = vec3_origin;
|
|
for ( i = 0 ; i < 3 ; i++ ) {
|
|
d = in * surface->axis[i];
|
|
out += d * camera->axis[i];
|
|
}
|
|
}
|
|
|
|
/*
|
|
=============
|
|
R_PlaneForSurface
|
|
|
|
Returns the plane for the first triangle in the surface
|
|
FIXME: check for degenerate triangle?
|
|
=============
|
|
*/
|
|
static void R_PlaneForSurface( const srfTriangles_t *tri, idPlane &plane ) {
|
|
idDrawVert *v1, *v2, *v3;
|
|
|
|
v1 = tri->verts + tri->indexes[0];
|
|
v2 = tri->verts + tri->indexes[1];
|
|
v3 = tri->verts + tri->indexes[2];
|
|
plane.FromPoints( v1->xyz, v2->xyz, v3->xyz );
|
|
}
|
|
|
|
/*
|
|
=========================
|
|
R_PreciseCullSurface
|
|
|
|
Check the surface for visibility on a per-triangle basis
|
|
for cases when it is going to be VERY expensive to draw (subviews)
|
|
|
|
If not culled, also returns the bounding box of the surface in
|
|
Normalized Device Coordinates, so it can be used to crop the scissor rect.
|
|
|
|
OPTIMIZE: we could also take exact portal passing into consideration
|
|
=========================
|
|
*/
|
|
bool R_PreciseCullSurface( const drawSurf_t *drawSurf, idBounds &ndcBounds ) {
|
|
const srfTriangles_t *tri;
|
|
idPlane clip, eye;
|
|
int i, j;
|
|
unsigned int pointOr;
|
|
unsigned int pointAnd;
|
|
idVec3 localView;
|
|
idFixedWinding w;
|
|
|
|
tri = drawSurf->geo;
|
|
|
|
pointOr = 0;
|
|
pointAnd = (unsigned int)~0;
|
|
|
|
// get an exact bounds of the triangles for scissor cropping
|
|
ndcBounds.Clear();
|
|
|
|
for ( i = 0; i < tri->numVerts; i++ ) {
|
|
int j;
|
|
unsigned int pointFlags;
|
|
|
|
R_TransformModelToClip( tri->verts[i].xyz, drawSurf->space->modelViewMatrix,
|
|
tr.viewDef->projectionMatrix, eye, clip );
|
|
|
|
pointFlags = 0;
|
|
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 true;
|
|
}
|
|
|
|
// backface and frustum cull
|
|
R_GlobalPointToLocal( drawSurf->space->modelMatrix, tr.viewDef->renderView.vieworg, localView );
|
|
|
|
for ( i = 0; i < tri->numIndexes; i += 3 ) {
|
|
idVec3 dir, normal;
|
|
float dot;
|
|
idVec3 d1, d2;
|
|
|
|
const idVec3 &v1 = tri->verts[tri->indexes[i]].xyz;
|
|
const idVec3 &v2 = tri->verts[tri->indexes[i+1]].xyz;
|
|
const idVec3 &v3 = tri->verts[tri->indexes[i+2]].xyz;
|
|
|
|
// this is a hack, because R_GlobalPointToLocal doesn't work with the non-normalized
|
|
// axis that we get from the gui view transform. It doesn't hurt anything, because
|
|
// we know that all gui generated surfaces are front facing
|
|
if ( tr.guiRecursionLevel == 0 ) {
|
|
// we don't care that it isn't normalized,
|
|
// all we want is the sign
|
|
d1 = v2 - v1;
|
|
d2 = v3 - v1;
|
|
normal = d2.Cross( d1 );
|
|
|
|
dir = v1 - localView;
|
|
|
|
dot = normal * dir;
|
|
if ( dot >= 0.0f ) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
// now find the exact screen bounds of the clipped triangle
|
|
w.SetNumPoints( 3 );
|
|
R_LocalPointToGlobal( drawSurf->space->modelMatrix, v1, w[0].ToVec3() );
|
|
R_LocalPointToGlobal( drawSurf->space->modelMatrix, v2, w[1].ToVec3() );
|
|
R_LocalPointToGlobal( drawSurf->space->modelMatrix, v3, w[2].ToVec3() );
|
|
w[0].s = w[0].t = w[1].s = w[1].t = w[2].s = w[2].t = 0.0f;
|
|
|
|
for ( j = 0; j < 4; j++ ) {
|
|
if ( !w.ClipInPlace( -tr.viewDef->frustum[j], 0.1f ) ) {
|
|
break;
|
|
}
|
|
}
|
|
for ( j = 0; j < w.GetNumPoints(); j++ ) {
|
|
idVec3 screen;
|
|
|
|
R_GlobalToNormalizedDeviceCoordinates( w[j].ToVec3(), screen );
|
|
ndcBounds.AddPoint( screen );
|
|
}
|
|
}
|
|
|
|
// if we don't enclose any area, return
|
|
if ( ndcBounds.IsCleared() ) {
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/*
|
|
========================
|
|
R_MirrorViewBySurface
|
|
========================
|
|
*/
|
|
static viewDef_t *R_MirrorViewBySurface( drawSurf_t *drawSurf ) {
|
|
viewDef_t *parms;
|
|
orientation_t surface, camera;
|
|
idPlane originalPlane, plane;
|
|
|
|
// copy the viewport size from the original
|
|
parms = (viewDef_t *)R_FrameAlloc( sizeof( *parms ) );
|
|
*parms = *tr.viewDef;
|
|
parms->renderView.viewID = 0; // clear to allow player bodies to show up, and suppress view weapons
|
|
|
|
parms->isSubview = true;
|
|
parms->isMirror = true;
|
|
|
|
// create plane axis for the portal we are seeing
|
|
R_PlaneForSurface( drawSurf->geo, originalPlane );
|
|
R_LocalPlaneToGlobal( drawSurf->space->modelMatrix, originalPlane, plane );
|
|
|
|
surface.origin = plane.Normal() * -plane[3];
|
|
surface.axis[0] = plane.Normal();
|
|
surface.axis[0].NormalVectors( surface.axis[1], surface.axis[2] );
|
|
surface.axis[2] = -surface.axis[2];
|
|
|
|
camera.origin = surface.origin;
|
|
camera.axis[0] = -surface.axis[0];
|
|
camera.axis[1] = surface.axis[1];
|
|
camera.axis[2] = surface.axis[2];
|
|
|
|
// set the mirrored origin and axis
|
|
R_MirrorPoint( tr.viewDef->renderView.vieworg, &surface, &camera, parms->renderView.vieworg );
|
|
|
|
R_MirrorVector( tr.viewDef->renderView.viewaxis[0], &surface, &camera, parms->renderView.viewaxis[0] );
|
|
R_MirrorVector( tr.viewDef->renderView.viewaxis[1], &surface, &camera, parms->renderView.viewaxis[1] );
|
|
R_MirrorVector( tr.viewDef->renderView.viewaxis[2], &surface, &camera, parms->renderView.viewaxis[2] );
|
|
|
|
// make the view origin 16 units away from the center of the surface
|
|
idVec3 viewOrigin = ( drawSurf->geo->bounds[0] + drawSurf->geo->bounds[1] ) * 0.5;
|
|
viewOrigin += ( originalPlane.Normal() * 16 );
|
|
|
|
R_LocalPointToGlobal( drawSurf->space->modelMatrix, viewOrigin, parms->initialViewAreaOrigin );
|
|
|
|
// set the mirror clip plane
|
|
parms->numClipPlanes = 1;
|
|
parms->clipPlanes[0] = -camera.axis[0];
|
|
|
|
parms->clipPlanes[0][3] = -( camera.origin * parms->clipPlanes[0].Normal() );
|
|
|
|
return parms;
|
|
}
|
|
|
|
/*
|
|
========================
|
|
R_XrayViewBySurface
|
|
========================
|
|
*/
|
|
static viewDef_t *R_XrayViewBySurface( drawSurf_t *drawSurf ) {
|
|
viewDef_t *parms;
|
|
idPlane originalPlane, plane;
|
|
|
|
// copy the viewport size from the original
|
|
parms = (viewDef_t *)R_FrameAlloc( sizeof( *parms ) );
|
|
*parms = *tr.viewDef;
|
|
parms->renderView.viewID = 0; // clear to allow player bodies to show up, and suppress view weapons
|
|
|
|
parms->isSubview = true;
|
|
parms->isXraySubview = true;
|
|
|
|
return parms;
|
|
}
|
|
|
|
/*
|
|
===============
|
|
R_RemoteRender
|
|
===============
|
|
*/
|
|
static void R_RemoteRender( drawSurf_t *surf, textureStage_t *stage ) {
|
|
viewDef_t *parms;
|
|
|
|
// remote views can be reused in a single frame
|
|
if ( stage->dynamicFrameCount == tr.frameCount ) {
|
|
return;
|
|
}
|
|
|
|
// if the entity doesn't have a remoteRenderView, do nothing
|
|
if ( !surf->space->entityDef->parms.remoteRenderView ) {
|
|
return;
|
|
}
|
|
|
|
// copy the viewport size from the original
|
|
parms = (viewDef_t *)R_FrameAlloc( sizeof( *parms ) );
|
|
*parms = *tr.viewDef;
|
|
|
|
parms->isSubview = true;
|
|
parms->isMirror = false;
|
|
|
|
parms->renderView = *surf->space->entityDef->parms.remoteRenderView;
|
|
parms->renderView.viewID = 0; // clear to allow player bodies to show up, and suppress view weapons
|
|
parms->initialViewAreaOrigin = parms->renderView.vieworg;
|
|
|
|
tr.CropRenderSize( stage->width, stage->height, true );
|
|
|
|
parms->renderView.x = 0;
|
|
parms->renderView.y = 0;
|
|
parms->renderView.width = SCREEN_WIDTH;
|
|
parms->renderView.height = SCREEN_HEIGHT;
|
|
|
|
tr.RenderViewToViewport( &parms->renderView, &parms->viewport );
|
|
|
|
parms->scissor.x1 = 0;
|
|
parms->scissor.y1 = 0;
|
|
parms->scissor.x2 = parms->viewport.x2 - parms->viewport.x1;
|
|
parms->scissor.y2 = parms->viewport.y2 - parms->viewport.y1;
|
|
|
|
parms->superView = tr.viewDef;
|
|
parms->subviewSurface = surf;
|
|
|
|
// generate render commands for it
|
|
R_RenderView(parms);
|
|
|
|
// copy this rendering to the image
|
|
stage->dynamicFrameCount = tr.frameCount;
|
|
if (!stage->image) {
|
|
stage->image = globalImages->scratchImage;
|
|
}
|
|
|
|
tr.CaptureRenderToImage( stage->image->imgName );
|
|
tr.UnCrop();
|
|
}
|
|
|
|
/*
|
|
=================
|
|
R_MirrorRender
|
|
=================
|
|
*/
|
|
void R_MirrorRender( drawSurf_t *surf, textureStage_t *stage, idScreenRect scissor ) {
|
|
viewDef_t *parms;
|
|
|
|
// remote views can be reused in a single frame
|
|
if ( stage->dynamicFrameCount == tr.frameCount ) {
|
|
return;
|
|
}
|
|
|
|
// issue a new view command
|
|
parms = R_MirrorViewBySurface( surf );
|
|
if ( !parms ) {
|
|
return;
|
|
}
|
|
|
|
tr.CropRenderSize( stage->width, stage->height, true );
|
|
|
|
parms->renderView.x = 0;
|
|
parms->renderView.y = 0;
|
|
parms->renderView.width = SCREEN_WIDTH;
|
|
parms->renderView.height = SCREEN_HEIGHT;
|
|
|
|
tr.RenderViewToViewport( &parms->renderView, &parms->viewport );
|
|
|
|
parms->scissor.x1 = 0;
|
|
parms->scissor.y1 = 0;
|
|
parms->scissor.x2 = parms->viewport.x2 - parms->viewport.x1;
|
|
parms->scissor.y2 = parms->viewport.y2 - parms->viewport.y1;
|
|
|
|
parms->superView = tr.viewDef;
|
|
parms->subviewSurface = surf;
|
|
|
|
// triangle culling order changes with mirroring
|
|
parms->isMirror = ( ( (int)parms->isMirror ^ (int)tr.viewDef->isMirror ) != 0 );
|
|
|
|
// generate render commands for it
|
|
R_RenderView( parms );
|
|
|
|
// copy this rendering to the image
|
|
stage->dynamicFrameCount = tr.frameCount;
|
|
stage->image = globalImages->scratchImage;
|
|
|
|
tr.CaptureRenderToImage( stage->image->imgName );
|
|
tr.UnCrop();
|
|
}
|
|
|
|
/*
|
|
=================
|
|
R_XrayRender
|
|
=================
|
|
*/
|
|
void R_XrayRender( drawSurf_t *surf, textureStage_t *stage, idScreenRect scissor ) {
|
|
viewDef_t *parms;
|
|
|
|
// remote views can be reused in a single frame
|
|
if ( stage->dynamicFrameCount == tr.frameCount ) {
|
|
return;
|
|
}
|
|
|
|
// issue a new view command
|
|
parms = R_XrayViewBySurface( surf );
|
|
if ( !parms ) {
|
|
return;
|
|
}
|
|
|
|
tr.CropRenderSize( stage->width, stage->height, true );
|
|
|
|
parms->renderView.x = 0;
|
|
parms->renderView.y = 0;
|
|
parms->renderView.width = SCREEN_WIDTH;
|
|
parms->renderView.height = SCREEN_HEIGHT;
|
|
|
|
tr.RenderViewToViewport( &parms->renderView, &parms->viewport );
|
|
|
|
parms->scissor.x1 = 0;
|
|
parms->scissor.y1 = 0;
|
|
parms->scissor.x2 = parms->viewport.x2 - parms->viewport.x1;
|
|
parms->scissor.y2 = parms->viewport.y2 - parms->viewport.y1;
|
|
|
|
parms->superView = tr.viewDef;
|
|
parms->subviewSurface = surf;
|
|
|
|
// triangle culling order changes with mirroring
|
|
parms->isMirror = ( ( (int)parms->isMirror ^ (int)tr.viewDef->isMirror ) != 0 );
|
|
|
|
// generate render commands for it
|
|
R_RenderView( parms );
|
|
|
|
// copy this rendering to the image
|
|
stage->dynamicFrameCount = tr.frameCount;
|
|
stage->image = globalImages->scratchImage2;
|
|
|
|
tr.CaptureRenderToImage( stage->image->imgName );
|
|
tr.UnCrop();
|
|
}
|
|
|
|
/*
|
|
==================
|
|
R_GenerateSurfaceSubview
|
|
==================
|
|
*/
|
|
bool R_GenerateSurfaceSubview( drawSurf_t *drawSurf ) {
|
|
idBounds ndcBounds;
|
|
viewDef_t *parms;
|
|
const idMaterial *shader;
|
|
|
|
// for testing the performance hit
|
|
if ( r_skipSubviews.GetBool() ) {
|
|
return false;
|
|
}
|
|
|
|
if ( R_PreciseCullSurface( drawSurf, ndcBounds ) ) {
|
|
return false;
|
|
}
|
|
|
|
shader = drawSurf->material;
|
|
|
|
// never recurse through a subview surface that we are
|
|
// already seeing through
|
|
for ( parms = tr.viewDef ; parms ; parms = parms->superView ) {
|
|
if ( parms->subviewSurface
|
|
&& parms->subviewSurface->geo == drawSurf->geo
|
|
&& parms->subviewSurface->space->entityDef == drawSurf->space->entityDef ) {
|
|
break;
|
|
}
|
|
}
|
|
if ( parms ) {
|
|
return false;
|
|
}
|
|
|
|
// crop the scissor bounds based on the precise cull
|
|
idScreenRect scissor;
|
|
|
|
idScreenRect *v = &tr.viewDef->viewport;
|
|
scissor.x1 = v->x1 + (int)( (v->x2 - v->x1 + 1 ) * 0.5f * ( ndcBounds[0][0] + 1.0f ));
|
|
scissor.y1 = v->y1 + (int)( (v->y2 - v->y1 + 1 ) * 0.5f * ( ndcBounds[0][1] + 1.0f ));
|
|
scissor.x2 = v->x1 + (int)( (v->x2 - v->x1 + 1 ) * 0.5f * ( ndcBounds[1][0] + 1.0f ));
|
|
scissor.y2 = v->y1 + (int)( (v->y2 - v->y1 + 1 ) * 0.5f * ( ndcBounds[1][1] + 1.0f ));
|
|
|
|
// nudge a bit for safety
|
|
scissor.Expand();
|
|
|
|
scissor.Intersect( tr.viewDef->scissor );
|
|
|
|
if ( scissor.IsEmpty() ) {
|
|
// cropped out
|
|
return false;
|
|
}
|
|
|
|
// see what kind of subview we are making
|
|
if ( shader->GetSort() != SS_SUBVIEW ) {
|
|
for ( int i = 0 ; i < shader->GetNumStages() ; i++ ) {
|
|
const shaderStage_t *stage = shader->GetStage( i );
|
|
switch ( stage->texture.dynamic ) {
|
|
case DI_REMOTE_RENDER:
|
|
R_RemoteRender( drawSurf, const_cast<textureStage_t *>(&stage->texture) );
|
|
break;
|
|
case DI_MIRROR_RENDER:
|
|
R_MirrorRender( drawSurf, const_cast<textureStage_t *>(&stage->texture), scissor );
|
|
break;
|
|
case DI_XRAY_RENDER:
|
|
R_XrayRender( drawSurf, const_cast<textureStage_t *>(&stage->texture), scissor );
|
|
break;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
// issue a new view command
|
|
parms = R_MirrorViewBySurface( drawSurf );
|
|
if ( !parms ) {
|
|
return false;
|
|
}
|
|
|
|
parms->scissor = scissor;
|
|
parms->superView = tr.viewDef;
|
|
parms->subviewSurface = drawSurf;
|
|
|
|
// triangle culling order changes with mirroring
|
|
parms->isMirror = ( ( (int)parms->isMirror ^ (int)tr.viewDef->isMirror ) != 0 );
|
|
|
|
// generate render commands for it
|
|
R_RenderView( parms );
|
|
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
================
|
|
R_GenerateSubViews
|
|
|
|
If we need to render another view to complete the current view,
|
|
generate it first.
|
|
|
|
It is important to do this after all drawSurfs for the current
|
|
view have been generated, because it may create a subview which
|
|
would change tr.viewCount.
|
|
================
|
|
*/
|
|
bool R_GenerateSubViews( void ) {
|
|
drawSurf_t *drawSurf;
|
|
int i;
|
|
bool subviews;
|
|
const idMaterial *shader;
|
|
|
|
// for testing the performance hit
|
|
if ( r_skipSubviews.GetBool() ) {
|
|
return false;
|
|
}
|
|
|
|
subviews = false;
|
|
|
|
// scan the surfaces until we either find a subview, or determine
|
|
// there are no more subview surfaces.
|
|
for ( i = 0 ; i < tr.viewDef->numDrawSurfs ; i++ ) {
|
|
drawSurf = tr.viewDef->drawSurfs[i];
|
|
shader = drawSurf->material;
|
|
|
|
if ( !shader || !shader->HasSubview() ) {
|
|
continue;
|
|
}
|
|
|
|
if ( R_GenerateSurfaceSubview( drawSurf ) ) {
|
|
subviews = true;
|
|
}
|
|
}
|
|
|
|
return subviews;
|
|
}
|