hello world

neo/renderer/Model_sprite.cpp

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+/*
+===========================================================================
+
+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 "../idlib/precompiled.h"
+#pragma hdrstop
+
+#include "tr_local.h"
+#include "Model_local.h"
+
+
+/*
+
+A simple sprite model that always faces the view axis.
+
+*/
+
+static const char *sprite_SnapshotName = "_sprite_Snapshot_";
+
+/*
+===============
+idRenderModelBeam::IsDynamicModel
+===============
+*/
+dynamicModel_t idRenderModelSprite::IsDynamicModel() const {
+	return DM_CONTINUOUS;
+}
+
+/*
+===============
+idRenderModelBeam::IsLoaded
+===============
+*/
+bool idRenderModelSprite::IsLoaded() const {
+	return true;
+}
+
+/*
+===============
+idRenderModelSprite::InstantiateDynamicModel
+===============
+*/
+idRenderModel *	idRenderModelSprite::InstantiateDynamicModel( const struct renderEntity_s *renderEntity, const struct viewDef_s *viewDef, idRenderModel *cachedModel ) {
+	idRenderModelStatic *staticModel;
+	srfTriangles_t *tri;
+	modelSurface_t surf;
+
+	if ( cachedModel && !r_useCachedDynamicModels.GetBool() ) {
+		delete cachedModel;
+		cachedModel = NULL;
+	}
+
+	if ( renderEntity == NULL || viewDef == NULL ) {
+		delete cachedModel;
+		return NULL;
+	}
+
+	if ( cachedModel != NULL ) {
+
+		assert( dynamic_cast<idRenderModelStatic *>( cachedModel ) != NULL );
+		assert( idStr::Icmp( cachedModel->Name(), sprite_SnapshotName ) == 0 );
+
+		staticModel = static_cast<idRenderModelStatic *>( cachedModel );
+		surf = *staticModel->Surface( 0 );
+		tri = surf.geometry;
+
+	} else {
+
+		staticModel = new idRenderModelStatic;
+		staticModel->InitEmpty( sprite_SnapshotName );
+
+		tri = R_AllocStaticTriSurf();
+		R_AllocStaticTriSurfVerts( tri, 4 );
+		R_AllocStaticTriSurfIndexes( tri, 6 );
+
+		tri->verts[ 0 ].Clear();
+		tri->verts[ 0 ].normal.Set( 1.0f, 0.0f, 0.0f );
+		tri->verts[ 0 ].tangents[0].Set( 0.0f, 1.0f, 0.0f );
+		tri->verts[ 0 ].tangents[1].Set( 0.0f, 0.0f, 1.0f );
+		tri->verts[ 0 ].st[ 0 ] = 0.0f;
+		tri->verts[ 0 ].st[ 1 ] = 0.0f;
+
+		tri->verts[ 1 ].Clear();
+		tri->verts[ 1 ].normal.Set( 1.0f, 0.0f, 0.0f );
+		tri->verts[ 1 ].tangents[0].Set( 0.0f, 1.0f, 0.0f );
+		tri->verts[ 1 ].tangents[1].Set( 0.0f, 0.0f, 1.0f );
+		tri->verts[ 1 ].st[ 0 ] = 1.0f;
+		tri->verts[ 1 ].st[ 1 ] = 0.0f;
+
+		tri->verts[ 2 ].Clear();
+		tri->verts[ 2 ].normal.Set( 1.0f, 0.0f, 0.0f );
+		tri->verts[ 2 ].tangents[0].Set( 0.0f, 1.0f, 0.0f );
+		tri->verts[ 2 ].tangents[1].Set( 0.0f, 0.0f, 1.0f );
+		tri->verts[ 2 ].st[ 0 ] = 1.0f;
+		tri->verts[ 2 ].st[ 1 ] = 1.0f;
+
+		tri->verts[ 3 ].Clear();
+		tri->verts[ 3 ].normal.Set( 1.0f, 0.0f, 0.0f );
+		tri->verts[ 3 ].tangents[0].Set( 0.0f, 1.0f, 0.0f );
+		tri->verts[ 3 ].tangents[1].Set( 0.0f, 0.0f, 1.0f );
+		tri->verts[ 3 ].st[ 0 ] = 0.0f;
+		tri->verts[ 3 ].st[ 1 ] = 1.0f;
+
+		tri->indexes[ 0 ] = 0;
+		tri->indexes[ 1 ] = 1;
+		tri->indexes[ 2 ] = 3;
+		tri->indexes[ 3 ] = 1;
+		tri->indexes[ 4 ] = 2;
+		tri->indexes[ 5 ] = 3;
+
+		tri->numVerts = 4;
+		tri->numIndexes = 6;
+
+		surf.geometry = tri;
+		surf.id = 0;
+		surf.shader = tr.defaultMaterial;
+		staticModel->AddSurface( surf );
+	}
+
+	int	red			= idMath::FtoiFast( renderEntity->shaderParms[ SHADERPARM_RED ] * 255.0f );
+	int green		= idMath::FtoiFast( renderEntity->shaderParms[ SHADERPARM_GREEN ] * 255.0f );
+	int	blue		= idMath::FtoiFast( renderEntity->shaderParms[ SHADERPARM_BLUE ] * 255.0f );
+	int	alpha		= idMath::FtoiFast( renderEntity->shaderParms[ SHADERPARM_ALPHA ] * 255.0f );
+
+	idVec3 right	= idVec3( 0.0f, renderEntity->shaderParms[ SHADERPARM_SPRITE_WIDTH ] * 0.5f, 0.0f );
+	idVec3 up		= idVec3( 0.0f, 0.0f, renderEntity->shaderParms[ SHADERPARM_SPRITE_HEIGHT ] * 0.5f );
+
+	tri->verts[ 0 ].xyz = up + right;
+	tri->verts[ 0 ].color[ 0 ] = red;
+	tri->verts[ 0 ].color[ 1 ] = green;
+	tri->verts[ 0 ].color[ 2 ] = blue;
+	tri->verts[ 0 ].color[ 3 ] = alpha;
+
+	tri->verts[ 1 ].xyz = up - right;
+	tri->verts[ 1 ].color[ 0 ] = red;
+	tri->verts[ 1 ].color[ 1 ] = green;
+	tri->verts[ 1 ].color[ 2 ] = blue;
+	tri->verts[ 1 ].color[ 3 ] = alpha;
+
+	tri->verts[ 2 ].xyz = - right - up;
+	tri->verts[ 2 ].color[ 0 ] = red;
+	tri->verts[ 2 ].color[ 1 ] = green;
+	tri->verts[ 2 ].color[ 2 ] = blue;
+	tri->verts[ 2 ].color[ 3 ] = alpha;
+
+	tri->verts[ 3 ].xyz = right - up;
+	tri->verts[ 3 ].color[ 0 ] = red;
+	tri->verts[ 3 ].color[ 1 ] = green;
+	tri->verts[ 3 ].color[ 2 ] = blue;
+	tri->verts[ 3 ].color[ 3 ] = alpha;
+
+	R_BoundTriSurf( tri );
+
+	staticModel->bounds = tri->bounds;
+
+	return staticModel;
+}
+
+/*
+===============
+idRenderModelSprite::Bounds
+===============
+*/
+idBounds idRenderModelSprite::Bounds( const struct renderEntity_s *renderEntity ) const {
+	idBounds b;
+
+	b.Zero();
+	if ( renderEntity == NULL ) {
+		b.ExpandSelf( 8.0f );
+	} else {
+		b.ExpandSelf( Max( renderEntity->shaderParms[ SHADERPARM_SPRITE_WIDTH ], renderEntity->shaderParms[ SHADERPARM_SPRITE_HEIGHT ] ) * 0.5f );
+	}
+	return b;
+}