mirror of
https://github.com/dhewm/dhewm3.git
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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.
911 lines
25 KiB
C++
911 lines
25 KiB
C++
/*
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===========================================================================
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Doom 3 GPL Source Code
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Copyright (C) 1999-2011 id Software LLC, a ZeniMax Media company.
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This file is part of the Doom 3 GPL Source Code ("Doom 3 Source Code").
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Doom 3 Source Code is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Doom 3 Source Code is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Doom 3 Source Code. If not, see <http://www.gnu.org/licenses/>.
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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.
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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.
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===========================================================================
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*/
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#include "sys/platform.h"
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#include "framework/Session.h"
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#include "renderer/tr_local.h"
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#include "renderer/MegaTexture.h"
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idCVar idMegaTexture::r_megaTextureLevel( "r_megaTextureLevel", "0", CVAR_RENDERER | CVAR_INTEGER, "draw only a specific level" );
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idCVar idMegaTexture::r_showMegaTexture( "r_showMegaTexture", "0", CVAR_RENDERER | CVAR_BOOL, "display all the level images" );
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idCVar idMegaTexture::r_showMegaTextureLabels( "r_showMegaTextureLabels", "0", CVAR_RENDERER | CVAR_BOOL, "draw colored blocks in each tile" );
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idCVar idMegaTexture::r_skipMegaTexture( "r_skipMegaTexture", "0", CVAR_RENDERER | CVAR_INTEGER, "only use the lowest level image" );
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idCVar idMegaTexture::r_terrainScale( "r_terrainScale", "3", CVAR_RENDERER | CVAR_INTEGER, "vertically scale USGS data" );
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/*
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allow sparse population of the upper detail tiles
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*/
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int RoundDownToPowerOfTwo( int num ) {
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int pot;
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for (pot = 1 ; (pot*2) <= num ; pot<<=1) {
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}
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return pot;
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}
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static union {
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int intVal;
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byte color[4];
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} fillColor;
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static byte colors[8][4] = {
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{ 0, 0, 0, 255 },
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{ 255, 0, 0, 255 },
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{ 0, 255, 0, 255 },
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{ 255, 255, 0, 255 },
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{ 0, 0, 255, 255 },
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{ 255, 0, 255, 255 },
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{ 0, 255, 255, 255 },
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{ 255, 255, 255, 255 }
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};
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static void R_EmptyLevelImage( idImage *image ) {
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int c = MAX_LEVEL_WIDTH * MAX_LEVEL_WIDTH;
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byte *data = (byte *)_alloca( c*4 );
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for ( int i = 0 ; i < c ; i++ ) {
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((int *)data)[i] = fillColor.intVal;
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}
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// FIXME: this won't live past vid mode changes
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image->GenerateImage( data, MAX_LEVEL_WIDTH, MAX_LEVEL_WIDTH,
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TF_DEFAULT, false, TR_REPEAT, TD_HIGH_QUALITY );
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}
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/*
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====================
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InitFromMegaFile
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====================
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*/
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bool idMegaTexture::InitFromMegaFile( const char *fileBase ) {
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idStr name = "megaTextures/";
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name += fileBase;
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name.StripFileExtension();
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name += ".mega";
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int width, height;
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fileHandle = fileSystem->OpenFileRead( name.c_str() );
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if ( !fileHandle ) {
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common->Printf( "idMegaTexture: failed to open %s\n", name.c_str() );
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return false;
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}
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fileHandle->Read( &header, sizeof( header ) );
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if ( header.tileSize < 64 || header.tilesWide < 1 || header.tilesHigh < 1 ) {
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common->Printf( "idMegaTexture: bad header on %s\n", name.c_str() );
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return false;
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}
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currentTriMapping = NULL;
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numLevels = 0;
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width = header.tilesWide;
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height = header.tilesHigh;
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int tileOffset = 1; // just past the header
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memset( levels, 0, sizeof( levels ) );
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while( 1 ) {
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idTextureLevel *level = &levels[numLevels];
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level->mega = this;
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level->tileOffset = tileOffset;
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level->tilesWide = width;
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level->tilesHigh = height;
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level->parms[0] = -1; // initially mask everything
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level->parms[1] = 0;
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level->parms[2] = 0;
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level->parms[3] = (float)width / TILE_PER_LEVEL;
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level->Invalidate();
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tileOffset += level->tilesWide * level->tilesHigh;
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char str[1024];
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sprintf( str, "MEGA_%s_%i", fileBase, numLevels );
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// give each level a default fill color
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for (int i = 0 ; i < 4 ; i++ ) {
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fillColor.color[i] = colors[numLevels+1][i];
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}
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levels[numLevels].image = globalImages->ImageFromFunction( str, R_EmptyLevelImage );
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numLevels++;
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if ( width <= TILE_PER_LEVEL && height <= TILE_PER_LEVEL ) {
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break;
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}
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width = ( width + 1 ) >> 1;
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height = ( height + 1 ) >> 1;
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}
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// force first bind to load everything
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currentViewOrigin[0] = -99999999.0f;
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currentViewOrigin[1] = -99999999.0f;
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currentViewOrigin[2] = -99999999.0f;
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return true;
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}
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/*
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====================
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SetMappingForSurface
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analyzes xyz and st to create a mapping
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This is not very robust, but works for rectangular grids
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====================
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*/
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void idMegaTexture::SetMappingForSurface( const srfTriangles_t *tri ) {
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if ( tri == currentTriMapping ) {
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return;
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}
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currentTriMapping = tri;
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if ( !tri->verts ) {
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return;
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}
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idDrawVert origin, axis[2];
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origin.st[0] = 1.0;
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origin.st[1] = 1.0;
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axis[0].st[0] = 0;
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axis[0].st[1] = 1;
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axis[1].st[0] = 1;
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axis[1].st[1] = 0;
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for ( int i = 0 ; i < tri->numVerts ; i++ ) {
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idDrawVert *v = &tri->verts[i];
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if ( v->st[0] <= origin.st[0] && v->st[1] <= origin.st[1] ) {
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origin = *v;
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}
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if ( v->st[0] >= axis[0].st[0] && v->st[1] <= axis[0].st[1] ) {
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axis[0] = *v;
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}
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if ( v->st[0] <= axis[1].st[0] && v->st[1] >= axis[1].st[1] ) {
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axis[1] = *v;
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}
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}
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for ( int i = 0 ; i < 2 ; i++ ) {
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idVec3 dir = axis[i].xyz - origin.xyz;
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float texLen = axis[i].st[i] - origin.st[i];
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float spaceLen = (axis[i].xyz - origin.xyz).Length();
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float scale = texLen / (spaceLen*spaceLen);
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dir *= scale;
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float c = origin.xyz * dir - origin.st[i];
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localViewToTextureCenter[i][0] = dir[0];
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localViewToTextureCenter[i][1] = dir[1];
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localViewToTextureCenter[i][2] = dir[2];
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localViewToTextureCenter[i][3] = -c;
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}
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}
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/*
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====================
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BindForViewOrigin
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====================
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*/
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void idMegaTexture::BindForViewOrigin( const idVec3 viewOrigin ) {
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SetViewOrigin( viewOrigin );
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// borderClamp image goes in texture 0
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GL_SelectTexture( 0 );
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globalImages->borderClampImage->Bind();
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// level images in higher textures, blurriest first
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for ( int i = 0 ; i < 7 ; i++ ) {
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GL_SelectTexture( 1+i );
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if ( i >= numLevels ) {
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globalImages->whiteImage->Bind();
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static float parms[4] = { -2, -2, 0, 1 }; // no contribution
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qglProgramLocalParameter4fvARB( GL_VERTEX_PROGRAM_ARB, i, parms );
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} else {
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idTextureLevel *level = &levels[ numLevels-1-i ];
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if ( r_showMegaTexture.GetBool() ) {
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if ( i & 1 ) {
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globalImages->blackImage->Bind();
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} else {
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globalImages->whiteImage->Bind();
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}
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} else {
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level->image->Bind();
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}
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qglProgramLocalParameter4fvARB( GL_VERTEX_PROGRAM_ARB, i, level->parms );
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}
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}
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float parms[4];
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parms[0] = 0;
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parms[1] = 0;
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parms[2] = 0;
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parms[3] = 1;
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qglProgramLocalParameter4fvARB( GL_VERTEX_PROGRAM_ARB, 7, parms );
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parms[0] = 1;
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parms[1] = 1;
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parms[2] = r_terrainScale.GetFloat();
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parms[3] = 1;
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qglProgramLocalParameter4fvARB( GL_VERTEX_PROGRAM_ARB, 8, parms );
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}
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/*
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====================
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Unbind
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This can go away once everything uses fragment programs so the enable states don't
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need tracking
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====================
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*/
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void idMegaTexture::Unbind( void ) {
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for ( int i = 0 ; i < numLevels ; i++ ) {
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GL_SelectTexture( 1+i );
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globalImages->BindNull();
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}
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}
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/*
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====================
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SetViewOrigin
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====================
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*/
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void idMegaTexture::SetViewOrigin( const idVec3 viewOrigin ) {
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if ( r_showMegaTextureLabels.IsModified() ) {
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r_showMegaTextureLabels.ClearModified();
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currentViewOrigin[0] = viewOrigin[0] + 0.1; // force a change
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for ( int i = 0 ; i < numLevels ; i++ ) {
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levels[i].Invalidate();
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}
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}
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if ( viewOrigin == currentViewOrigin ) {
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return;
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}
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if ( r_skipMegaTexture.GetBool() ) {
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return;
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}
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currentViewOrigin = viewOrigin;
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float texCenter[2];
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// convert the viewOrigin to a texture center, which will
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// be a different conversion for each megaTexture
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for ( int i = 0 ; i < 2 ; i++ ) {
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texCenter[i] =
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viewOrigin[0] * localViewToTextureCenter[i][0] +
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viewOrigin[1] * localViewToTextureCenter[i][1] +
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viewOrigin[2] * localViewToTextureCenter[i][2] +
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localViewToTextureCenter[i][3];
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}
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for ( int i = 0 ; i < numLevels ; i++ ) {
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levels[i].UpdateForCenter( texCenter );
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}
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}
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/*
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====================
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UpdateTile
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A local tile will only be mapped to globalTile[ localTile + X * TILE_PER_LEVEL ] for some x
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====================
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*/
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void idTextureLevel::UpdateTile( int localX, int localY, int globalX, int globalY ) {
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idTextureTile *tile = &tileMap[localX][localY];
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if ( tile->x == globalX && tile->y == globalY ) {
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return;
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}
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if ( (globalX & (TILE_PER_LEVEL-1)) != localX || (globalY & (TILE_PER_LEVEL-1)) != localY ) {
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common->Error( "idTextureLevel::UpdateTile: bad coordinate mod" );
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}
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tile->x = globalX;
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tile->y = globalY;
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byte data[ TILE_SIZE * TILE_SIZE * 4 ];
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if ( globalX >= tilesWide || globalX < 0 || globalY >= tilesHigh || globalY < 0 ) {
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// off the map
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memset( data, 0, sizeof( data ) );
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} else {
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// extract the data from the full image (FIXME: background load from disk)
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int tileNum = tileOffset + tile->y * tilesWide + tile->x;
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int tileSize = TILE_SIZE * TILE_SIZE * 4;
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mega->fileHandle->Seek( tileNum * tileSize, FS_SEEK_SET );
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memset( data, 128, sizeof( data ) );
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mega->fileHandle->Read( data, tileSize );
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}
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if ( idMegaTexture::r_showMegaTextureLabels.GetBool() ) {
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// put a color marker in it
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byte color[4] = { 255 * localX / TILE_PER_LEVEL, 255 * localY / TILE_PER_LEVEL, 0, 0 };
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for ( int x = 0 ; x < 8 ; x++ ) {
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for ( int y = 0 ; y < 8 ; y++ ) {
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*(int *)&data[ ( ( y + TILE_SIZE/2 - 4 ) * TILE_SIZE + x + TILE_SIZE/2 - 4 ) * 4 ] = *(int *)color;
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}
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}
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}
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// upload all the mip-map levels
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int level = 0;
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int size = TILE_SIZE;
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while ( 1 ) {
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qglTexSubImage2D( GL_TEXTURE_2D, level, localX * size, localY * size, size, size, GL_RGBA, GL_UNSIGNED_BYTE, data );
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size >>= 1;
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level++;
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if ( size == 0 ) {
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break;
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}
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// mip-map in place
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for ( int y = 0 ; y < size ; y++ ) {
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byte *in, *in2, *out;
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in = data + y * size * 16;
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in2 = in + size * 8;
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out = data + y * size * 4;
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for ( int x = 0 ; x < size ; x++ ) {
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out[x*4+0] = ( in[x*8+0] + in[x*8+4+0] + in2[x*8+0] + in2[x*8+4+0] ) >> 2;
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out[x*4+1] = ( in[x*8+1] + in[x*8+4+1] + in2[x*8+1] + in2[x*8+4+1] ) >> 2;
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out[x*4+2] = ( in[x*8+2] + in[x*8+4+2] + in2[x*8+2] + in2[x*8+4+2] ) >> 2;
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out[x*4+3] = ( in[x*8+3] + in[x*8+4+3] + in2[x*8+3] + in2[x*8+4+3] ) >> 2;
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}
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}
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}
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}
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/*
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====================
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UpdateForCenter
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Center is in the 0.0 to 1.0 range
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====================
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*/
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void idTextureLevel::UpdateForCenter( float center[2] ) {
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int globalTileCorner[2];
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int localTileOffset[2];
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if ( tilesWide <= TILE_PER_LEVEL && tilesHigh <= TILE_PER_LEVEL ) {
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globalTileCorner[0] = 0;
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globalTileCorner[1] = 0;
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localTileOffset[0] = 0;
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localTileOffset[1] = 0;
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// orient the mask so that it doesn't mask anything at all
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parms[0] = 0.25;
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parms[1] = 0.25;
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parms[3] = 0.25;
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} else {
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for ( int i = 0 ; i < 2 ; i++ ) {
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float global[2];
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// this value will be outside the 0.0 to 1.0 range unless
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// we are in the corner of the megaTexture
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global[i] = ( center[i] * parms[3] - 0.5 ) * TILE_PER_LEVEL;
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globalTileCorner[i] = (int)( global[i] + 0.5 );
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localTileOffset[i] = globalTileCorner[i] & (TILE_PER_LEVEL-1);
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// scaling for the mask texture to only allow the proper window
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// of tiles to show through
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parms[i] = -globalTileCorner[i] / (float)TILE_PER_LEVEL;
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}
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}
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image->Bind();
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for ( int x = 0 ; x < TILE_PER_LEVEL ; x++ ) {
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for ( int y = 0 ; y < TILE_PER_LEVEL ; y++ ) {
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int globalTile[2];
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globalTile[0] = globalTileCorner[0] + ( ( x - localTileOffset[0] ) & (TILE_PER_LEVEL-1) );
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globalTile[1] = globalTileCorner[1] + ( ( y - localTileOffset[1] ) & (TILE_PER_LEVEL-1) );
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UpdateTile( x, y, globalTile[0], globalTile[1] );
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}
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}
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}
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/*
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=====================
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Invalidate
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Forces all tiles to be regenerated
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=====================
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*/
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void idTextureLevel::Invalidate() {
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for ( int x = 0 ; x < TILE_PER_LEVEL ; x++ ) {
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for ( int y = 0 ; y < TILE_PER_LEVEL ; y++ ) {
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tileMap[x][y].x =
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tileMap[x][y].y = -99999;
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}
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}
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}
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//===================================================================================================
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typedef struct _TargaHeader {
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unsigned char id_length, colormap_type, image_type;
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unsigned short colormap_index, colormap_length;
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unsigned char colormap_size;
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unsigned short x_origin, y_origin, width, height;
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unsigned char pixel_size, attributes;
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} TargaHeader;
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static byte ReadByte( idFile *f ) {
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byte b;
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f->Read( &b, 1 );
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return b;
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}
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static short ReadShort( idFile *f ) {
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byte b[2];
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f->Read( &b, 2 );
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return b[0] + ( b[1] << 8 );
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}
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/*
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====================
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GenerateMegaMipMaps
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====================
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*/
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void idMegaTexture::GenerateMegaMipMaps( megaTextureHeader_t *header, idFile *outFile ) {
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|
outFile->Flush();
|
|
|
|
// out fileSystem doesn't allow read / write access...
|
|
idFile *inFile = fileSystem->OpenFileRead( outFile->GetName() );
|
|
|
|
int tileOffset = 1;
|
|
int width = header->tilesWide;
|
|
int height = header->tilesHigh;
|
|
|
|
int tileSize = header->tileSize * header->tileSize * 4;
|
|
byte *oldBlock = (byte *)_alloca( tileSize );
|
|
byte *newBlock = (byte *)_alloca( tileSize );
|
|
|
|
while ( width > 1 || height > 1 ) {
|
|
int newHeight = (height+1) >> 1;
|
|
if ( newHeight < 1 ) {
|
|
newHeight = 1;
|
|
}
|
|
int newWidth = (width+1) >> 1;
|
|
if ( width < 1 ) {
|
|
width = 1;
|
|
}
|
|
common->Printf( "generating %i x %i block mip level\n", newWidth, newHeight );
|
|
|
|
int tileNum;
|
|
|
|
for ( int y = 0 ; y < newHeight ; y++ ) {
|
|
common->Printf( "row %i\n", y );
|
|
session->UpdateScreen();
|
|
|
|
for ( int x = 0 ; x < newWidth ; x++ ) {
|
|
// mip map four original blocks down into a single new block
|
|
for ( int yy = 0 ; yy < 2 ; yy++ ) {
|
|
for ( int xx = 0 ; xx< 2 ; xx++ ) {
|
|
int tx = x*2 + xx;
|
|
int ty = y*2 + yy;
|
|
|
|
if ( tx > width || ty > height ) {
|
|
// off edge, zero fill
|
|
memset( newBlock, 0, sizeof( tileSize ) );
|
|
} else {
|
|
tileNum = tileOffset + ty * width + tx;
|
|
inFile->Seek( tileNum * tileSize, FS_SEEK_SET );
|
|
inFile->Read( oldBlock, tileSize );
|
|
}
|
|
// mip map the new pixels
|
|
for ( int yyy = 0 ; yyy < TILE_SIZE / 2 ; yyy++ ) {
|
|
for ( int xxx = 0 ; xxx < TILE_SIZE / 2 ; xxx++ ) {
|
|
byte *in = &oldBlock[ ( yyy * 2 * TILE_SIZE + xxx * 2 ) * 4 ];
|
|
byte *out = &newBlock[ ( ( ( TILE_SIZE/2 * yy ) + yyy ) * TILE_SIZE + ( TILE_SIZE/2 * xx ) + xxx ) * 4 ];
|
|
out[0] = ( in[0] + in[4] + in[0+TILE_SIZE*4] + in[4+TILE_SIZE*4] ) >> 2;
|
|
out[1] = ( in[1] + in[5] + in[1+TILE_SIZE*4] + in[5+TILE_SIZE*4] ) >> 2;
|
|
out[2] = ( in[2] + in[6] + in[2+TILE_SIZE*4] + in[6+TILE_SIZE*4] ) >> 2;
|
|
out[3] = ( in[3] + in[7] + in[3+TILE_SIZE*4] + in[7+TILE_SIZE*4] ) >> 2;
|
|
}
|
|
}
|
|
|
|
// write the block out
|
|
tileNum = tileOffset + width * height + y * newWidth + x;
|
|
outFile->Seek( tileNum * tileSize, FS_SEEK_SET );
|
|
outFile->Write( newBlock, tileSize );
|
|
|
|
}
|
|
}
|
|
}
|
|
}
|
|
tileOffset += width * height;
|
|
width = newWidth;
|
|
height = newHeight;
|
|
}
|
|
|
|
delete inFile;
|
|
}
|
|
|
|
/*
|
|
====================
|
|
GenerateMegaPreview
|
|
|
|
Make a 2k x 2k preview image for a mega texture that can be used in modeling programs
|
|
====================
|
|
*/
|
|
void idMegaTexture::GenerateMegaPreview( const char *fileName ) {
|
|
idFile *fileHandle = fileSystem->OpenFileRead( fileName );
|
|
if ( !fileHandle ) {
|
|
common->Printf( "idMegaTexture: failed to open %s\n", fileName );
|
|
return;
|
|
}
|
|
|
|
idStr outName = fileName;
|
|
outName.StripFileExtension();
|
|
outName += "_preview.tga";
|
|
|
|
common->Printf( "Creating %s.\n", outName.c_str() );
|
|
|
|
megaTextureHeader_t header;
|
|
|
|
fileHandle->Read( &header, sizeof( header ) );
|
|
if ( header.tileSize < 64 || header.tilesWide < 1 || header.tilesHigh < 1 ) {
|
|
common->Printf( "idMegaTexture: bad header on %s\n", fileName );
|
|
return;
|
|
}
|
|
|
|
int tileSize = header.tileSize;
|
|
int width = header.tilesWide;
|
|
int height = header.tilesHigh;
|
|
int tileOffset = 1;
|
|
int tileBytes = tileSize * tileSize * 4;
|
|
// find the level that fits
|
|
while ( width * tileSize > 2048 || height * tileSize > 2048 ) {
|
|
tileOffset += width * height;
|
|
width >>= 1;
|
|
if ( width < 1 ) {
|
|
width = 1;
|
|
}
|
|
height >>= 1;
|
|
if ( height < 1 ) {
|
|
height = 1;
|
|
}
|
|
}
|
|
|
|
byte *pic = (byte *)R_StaticAlloc( width * height * tileBytes );
|
|
byte *oldBlock = (byte *)_alloca( tileBytes );
|
|
for ( int y = 0 ; y < height ; y++ ) {
|
|
for ( int x = 0 ; x < width ; x++ ) {
|
|
int tileNum = tileOffset + y * width + x;
|
|
fileHandle->Seek( tileNum * tileBytes, FS_SEEK_SET );
|
|
fileHandle->Read( oldBlock, tileBytes );
|
|
|
|
for ( int yy = 0 ; yy < tileSize ; yy++ ) {
|
|
memcpy( pic + ( ( y * tileSize + yy ) * width * tileSize + x * tileSize ) * 4,
|
|
oldBlock + yy * tileSize * 4, tileSize * 4 );
|
|
}
|
|
}
|
|
}
|
|
|
|
R_WriteTGA( outName.c_str(), pic, width * tileSize, height * tileSize, false );
|
|
|
|
R_StaticFree( pic );
|
|
|
|
delete fileHandle;
|
|
}
|
|
|
|
|
|
/*
|
|
====================
|
|
MakeMegaTexture_f
|
|
|
|
Incrementally load a giant tga file and process into the mega texture block format
|
|
====================
|
|
*/
|
|
void idMegaTexture::MakeMegaTexture_f( const idCmdArgs &args ) {
|
|
int columns, fileSize, numBytes;
|
|
byte *pixbuf;
|
|
int row, column;
|
|
TargaHeader targa_header;
|
|
|
|
if ( args.Argc() != 2 ) {
|
|
common->Printf( "USAGE: makeMegaTexture <filebase>\n" );
|
|
return;
|
|
}
|
|
|
|
idStr name_s = "megaTextures/";
|
|
name_s += args.Argv(1);
|
|
name_s.StripFileExtension();
|
|
name_s += ".tga";
|
|
|
|
const char *name = name_s.c_str();
|
|
|
|
//
|
|
// open the file
|
|
//
|
|
common->Printf( "Opening %s.\n", name );
|
|
fileSize = fileSystem->ReadFile( name, NULL, NULL );
|
|
idFile *file = fileSystem->OpenFileRead( name );
|
|
|
|
if ( !file ) {
|
|
common->Printf( "Couldn't open %s\n", name );
|
|
return;
|
|
}
|
|
|
|
targa_header.id_length = ReadByte( file );
|
|
targa_header.colormap_type = ReadByte( file );
|
|
targa_header.image_type = ReadByte( file );
|
|
|
|
targa_header.colormap_index = ReadShort( file );
|
|
targa_header.colormap_length = ReadShort( file );
|
|
targa_header.colormap_size = ReadByte( file );
|
|
targa_header.x_origin = ReadShort( file );
|
|
targa_header.y_origin = ReadShort( file );
|
|
targa_header.width = ReadShort( file );
|
|
targa_header.height = ReadShort( file );
|
|
targa_header.pixel_size = ReadByte( file );
|
|
targa_header.attributes = ReadByte( file );
|
|
|
|
if ( targa_header.image_type != 2 && targa_header.image_type != 10 && targa_header.image_type != 3 ) {
|
|
common->Error( "LoadTGA( %s ): Only type 2 (RGB), 3 (gray), and 10 (RGB) TGA images supported\n", name );
|
|
}
|
|
|
|
if ( targa_header.colormap_type != 0 ) {
|
|
common->Error( "LoadTGA( %s ): colormaps not supported\n", name );
|
|
}
|
|
|
|
if ( ( targa_header.pixel_size != 32 && targa_header.pixel_size != 24 ) && targa_header.image_type != 3 ) {
|
|
common->Error( "LoadTGA( %s ): Only 32 or 24 bit images supported (no colormaps)\n", name );
|
|
}
|
|
|
|
if ( targa_header.image_type == 2 || targa_header.image_type == 3 ) {
|
|
numBytes = targa_header.width * targa_header.height * ( targa_header.pixel_size >> 3 );
|
|
if ( numBytes > fileSize - 18 - targa_header.id_length ) {
|
|
common->Error( "LoadTGA( %s ): incomplete file\n", name );
|
|
}
|
|
}
|
|
|
|
columns = targa_header.width;
|
|
|
|
// skip TARGA image comment
|
|
if ( targa_header.id_length != 0 ) {
|
|
file->Seek( targa_header.id_length, FS_SEEK_CUR );
|
|
}
|
|
|
|
megaTextureHeader_t mtHeader;
|
|
|
|
mtHeader.tileSize = TILE_SIZE;
|
|
mtHeader.tilesWide = RoundDownToPowerOfTwo( targa_header.width ) / TILE_SIZE;
|
|
mtHeader.tilesHigh = RoundDownToPowerOfTwo( targa_header.height ) / TILE_SIZE;
|
|
|
|
idStr outName = name;
|
|
outName.StripFileExtension();
|
|
outName += ".mega";
|
|
|
|
common->Printf( "Writing %i x %i size %i tiles to %s.\n",
|
|
mtHeader.tilesWide, mtHeader.tilesHigh, mtHeader.tileSize, outName.c_str() );
|
|
|
|
// open the output megatexture file
|
|
idFile *out = fileSystem->OpenFileWrite( outName.c_str() );
|
|
|
|
out->Write( &mtHeader, sizeof( mtHeader ) );
|
|
out->Seek( TILE_SIZE * TILE_SIZE * 4, FS_SEEK_SET );
|
|
|
|
// we will process this one row of tiles at a time, since the entire thing
|
|
// won't fit in memory
|
|
byte *targa_rgba = (byte *)R_StaticAlloc( TILE_SIZE * targa_header.width * 4 );
|
|
|
|
int blockRowsRemaining = mtHeader.tilesHigh;
|
|
while ( blockRowsRemaining-- ) {
|
|
common->Printf( "%i blockRowsRemaining\n", blockRowsRemaining );
|
|
session->UpdateScreen();
|
|
|
|
if ( targa_header.image_type == 2 || targa_header.image_type == 3 ) {
|
|
// Uncompressed RGB or gray scale image
|
|
for( row = 0 ; row < TILE_SIZE ; row++ ) {
|
|
pixbuf = targa_rgba + row*columns*4;
|
|
for( column = 0; column < columns; column++) {
|
|
unsigned char red,green,blue,alphabyte;
|
|
switch( targa_header.pixel_size ) {
|
|
case 8:
|
|
blue = ReadByte( file );
|
|
green = blue;
|
|
red = blue;
|
|
*pixbuf++ = red;
|
|
*pixbuf++ = green;
|
|
*pixbuf++ = blue;
|
|
*pixbuf++ = 255;
|
|
break;
|
|
|
|
case 24:
|
|
blue = ReadByte( file );
|
|
green = ReadByte( file );
|
|
red = ReadByte( file );
|
|
*pixbuf++ = red;
|
|
*pixbuf++ = green;
|
|
*pixbuf++ = blue;
|
|
*pixbuf++ = 255;
|
|
break;
|
|
case 32:
|
|
blue = ReadByte( file );
|
|
green = ReadByte( file );
|
|
red = ReadByte( file );
|
|
alphabyte = ReadByte( file );
|
|
*pixbuf++ = red;
|
|
*pixbuf++ = green;
|
|
*pixbuf++ = blue;
|
|
*pixbuf++ = alphabyte;
|
|
break;
|
|
default:
|
|
common->Error( "LoadTGA( %s ): illegal pixel_size '%d'\n", name, targa_header.pixel_size );
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
} else if ( targa_header.image_type == 10 ) { // Runlength encoded RGB images
|
|
unsigned char red,green,blue,alphabyte,packetHeader,packetSize,j;
|
|
|
|
red = 0;
|
|
green = 0;
|
|
blue = 0;
|
|
alphabyte = 0xff;
|
|
|
|
for( row = 0 ; row < TILE_SIZE ; row++ ) {
|
|
pixbuf = targa_rgba + row*columns*4;
|
|
for( column = 0; column < columns; ) {
|
|
packetHeader= ReadByte( file );
|
|
packetSize = 1 + (packetHeader & 0x7f);
|
|
if ( packetHeader & 0x80 ) { // run-length packet
|
|
switch( targa_header.pixel_size ) {
|
|
case 24:
|
|
blue = ReadByte( file );
|
|
green = ReadByte( file );
|
|
red = ReadByte( file );
|
|
alphabyte = 255;
|
|
break;
|
|
case 32:
|
|
blue = ReadByte( file );
|
|
green = ReadByte( file );
|
|
red = ReadByte( file );
|
|
alphabyte = ReadByte( file );
|
|
break;
|
|
default:
|
|
common->Error( "LoadTGA( %s ): illegal pixel_size '%d'\n", name, targa_header.pixel_size );
|
|
break;
|
|
}
|
|
|
|
for( j = 0; j < packetSize; j++ ) {
|
|
*pixbuf++=red;
|
|
*pixbuf++=green;
|
|
*pixbuf++=blue;
|
|
*pixbuf++=alphabyte;
|
|
column++;
|
|
if ( column == columns ) { // run spans across rows
|
|
common->Error( "TGA had RLE across columns, probably breaks block" );
|
|
column = 0;
|
|
if ( row > 0) {
|
|
row--;
|
|
}
|
|
else {
|
|
goto breakOut;
|
|
}
|
|
pixbuf = targa_rgba + row*columns*4;
|
|
}
|
|
}
|
|
} else { // non run-length packet
|
|
for( j = 0; j < packetSize; j++ ) {
|
|
switch( targa_header.pixel_size ) {
|
|
case 24:
|
|
blue = ReadByte( file );
|
|
green = ReadByte( file );
|
|
red = ReadByte( file );
|
|
*pixbuf++ = red;
|
|
*pixbuf++ = green;
|
|
*pixbuf++ = blue;
|
|
*pixbuf++ = 255;
|
|
break;
|
|
case 32:
|
|
blue = ReadByte( file );
|
|
green = ReadByte( file );
|
|
red = ReadByte( file );
|
|
alphabyte = ReadByte( file );
|
|
*pixbuf++ = red;
|
|
*pixbuf++ = green;
|
|
*pixbuf++ = blue;
|
|
*pixbuf++ = alphabyte;
|
|
break;
|
|
default:
|
|
common->Error( "LoadTGA( %s ): illegal pixel_size '%d'\n", name, targa_header.pixel_size );
|
|
break;
|
|
}
|
|
column++;
|
|
if ( column == columns ) { // pixel packet run spans across rows
|
|
column = 0;
|
|
if ( row > 0 ) {
|
|
row--;
|
|
}
|
|
else {
|
|
goto breakOut;
|
|
}
|
|
pixbuf = targa_rgba + row*columns*4;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
breakOut: ;
|
|
}
|
|
}
|
|
|
|
//
|
|
// write out individual blocks from the full row block buffer
|
|
//
|
|
for ( int rowBlock = 0 ; rowBlock < mtHeader.tilesWide ; rowBlock++ ) {
|
|
for ( int y = 0 ; y < TILE_SIZE ; y++ ) {
|
|
out->Write( targa_rgba + ( y * targa_header.width + rowBlock * TILE_SIZE ) * 4, TILE_SIZE * 4 );
|
|
}
|
|
}
|
|
}
|
|
|
|
R_StaticFree( targa_rgba );
|
|
|
|
GenerateMegaMipMaps( &mtHeader, out );
|
|
|
|
delete out;
|
|
delete file;
|
|
|
|
GenerateMegaPreview( outName.c_str() );
|
|
#if 0
|
|
if ( (targa_header.attributes & (1<<5)) ) { // image flp bit
|
|
R_VerticalFlip( *pic, *width, *height );
|
|
}
|
|
#endif
|
|
}
|