mirror of
https://github.com/id-Software/DOOM-3-BFG.git
synced 2024-12-11 13:11:47 +00:00
486 lines
No EOL
11 KiB
C++
486 lines
No EOL
11 KiB
C++
/*
|
|
===========================================================================
|
|
|
|
Doom 3 BFG Edition GPL Source Code
|
|
Copyright (C) 1993-2012 id Software LLC, a ZeniMax Media company.
|
|
|
|
This file is part of the Doom 3 BFG Edition GPL Source Code ("Doom 3 BFG Edition Source Code").
|
|
|
|
Doom 3 BFG Edition 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 BFG Edition 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 BFG Edition Source Code. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
In addition, the Doom 3 BFG Edition 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 BFG Edition 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.
|
|
|
|
===========================================================================
|
|
*/
|
|
|
|
#pragma hdrstop
|
|
#include "precompiled.h"
|
|
|
|
|
|
#include "tr_local.h"
|
|
|
|
#define DEFAULT_SIZE 16
|
|
|
|
/*
|
|
==================
|
|
idImage::MakeDefault
|
|
|
|
the default image will be grey with a white box outline
|
|
to allow you to see the mapping coordinates on a surface
|
|
==================
|
|
*/
|
|
void idImage::MakeDefault()
|
|
{
|
|
int x, y;
|
|
byte data[DEFAULT_SIZE][DEFAULT_SIZE][4];
|
|
|
|
if( com_developer.GetBool() )
|
|
{
|
|
// grey center
|
|
for( y = 0 ; y < DEFAULT_SIZE ; y++ )
|
|
{
|
|
for( x = 0 ; x < DEFAULT_SIZE ; x++ )
|
|
{
|
|
data[y][x][0] = 32;
|
|
data[y][x][1] = 32;
|
|
data[y][x][2] = 32;
|
|
data[y][x][3] = 255;
|
|
}
|
|
}
|
|
|
|
// white border
|
|
for( x = 0 ; x < DEFAULT_SIZE ; x++ )
|
|
{
|
|
data[0][x][0] =
|
|
data[0][x][1] =
|
|
data[0][x][2] =
|
|
data[0][x][3] = 255;
|
|
|
|
data[x][0][0] =
|
|
data[x][0][1] =
|
|
data[x][0][2] =
|
|
data[x][0][3] = 255;
|
|
|
|
data[DEFAULT_SIZE - 1][x][0] =
|
|
data[DEFAULT_SIZE - 1][x][1] =
|
|
data[DEFAULT_SIZE - 1][x][2] =
|
|
data[DEFAULT_SIZE - 1][x][3] = 255;
|
|
|
|
data[x][DEFAULT_SIZE - 1][0] =
|
|
data[x][DEFAULT_SIZE - 1][1] =
|
|
data[x][DEFAULT_SIZE - 1][2] =
|
|
data[x][DEFAULT_SIZE - 1][3] = 255;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
for( y = 0 ; y < DEFAULT_SIZE ; y++ )
|
|
{
|
|
for( x = 0 ; x < DEFAULT_SIZE ; x++ )
|
|
{
|
|
data[y][x][0] = 0;
|
|
data[y][x][1] = 0;
|
|
data[y][x][2] = 0;
|
|
data[y][x][3] = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
GenerateImage( ( byte* )data,
|
|
DEFAULT_SIZE, DEFAULT_SIZE,
|
|
TF_DEFAULT, TR_REPEAT, TD_DEFAULT );
|
|
|
|
defaulted = true;
|
|
}
|
|
|
|
static void R_DefaultImage( idImage* image )
|
|
{
|
|
image->MakeDefault();
|
|
}
|
|
|
|
static void R_WhiteImage( idImage* image )
|
|
{
|
|
byte data[DEFAULT_SIZE][DEFAULT_SIZE][4];
|
|
|
|
// solid white texture
|
|
memset( data, 255, sizeof( data ) );
|
|
image->GenerateImage( ( byte* )data, DEFAULT_SIZE, DEFAULT_SIZE,
|
|
TF_DEFAULT, TR_REPEAT, TD_DEFAULT );
|
|
}
|
|
|
|
static void R_BlackImage( idImage* image )
|
|
{
|
|
byte data[DEFAULT_SIZE][DEFAULT_SIZE][4];
|
|
|
|
// solid black texture
|
|
memset( data, 0, sizeof( data ) );
|
|
image->GenerateImage( ( byte* )data, DEFAULT_SIZE, DEFAULT_SIZE,
|
|
TF_DEFAULT, TR_REPEAT, TD_DEFAULT );
|
|
}
|
|
|
|
static void R_RGBA8Image( idImage* image )
|
|
{
|
|
byte data[DEFAULT_SIZE][DEFAULT_SIZE][4];
|
|
|
|
memset( data, 0, sizeof( data ) );
|
|
data[0][0][0] = 16;
|
|
data[0][0][1] = 32;
|
|
data[0][0][2] = 48;
|
|
data[0][0][3] = 96;
|
|
|
|
image->GenerateImage( ( byte* )data, DEFAULT_SIZE, DEFAULT_SIZE, TF_DEFAULT, TR_REPEAT, TD_LOOKUP_TABLE_RGBA );
|
|
}
|
|
|
|
static void R_DepthImage( idImage* image )
|
|
{
|
|
byte data[DEFAULT_SIZE][DEFAULT_SIZE][4];
|
|
|
|
memset( data, 0, sizeof( data ) );
|
|
data[0][0][0] = 16;
|
|
data[0][0][1] = 32;
|
|
data[0][0][2] = 48;
|
|
data[0][0][3] = 96;
|
|
|
|
image->GenerateImage( ( byte* )data, DEFAULT_SIZE, DEFAULT_SIZE, TF_NEAREST, TR_CLAMP, TD_DEPTH );
|
|
}
|
|
|
|
static void R_AlphaNotchImage( idImage* image )
|
|
{
|
|
byte data[2][4];
|
|
|
|
// this is used for alpha test clip planes
|
|
|
|
data[0][0] = data[0][1] = data[0][2] = 255;
|
|
data[0][3] = 0;
|
|
data[1][0] = data[1][1] = data[1][2] = 255;
|
|
data[1][3] = 255;
|
|
|
|
image->GenerateImage( ( byte* )data, 2, 1, TF_NEAREST, TR_CLAMP, TD_LOOKUP_TABLE_ALPHA );
|
|
}
|
|
|
|
static void R_FlatNormalImage( idImage* image )
|
|
{
|
|
byte data[DEFAULT_SIZE][DEFAULT_SIZE][4];
|
|
|
|
// flat normal map for default bunp mapping
|
|
for( int i = 0 ; i < 4 ; i++ )
|
|
{
|
|
data[0][i][0] = 128;
|
|
data[0][i][1] = 128;
|
|
data[0][i][2] = 255;
|
|
data[0][i][3] = 255;
|
|
}
|
|
image->GenerateImage( ( byte* )data, 2, 2, TF_DEFAULT, TR_REPEAT, TD_BUMP );
|
|
}
|
|
|
|
/*
|
|
================
|
|
R_CreateNoFalloffImage
|
|
|
|
This is a solid white texture that is zero clamped.
|
|
================
|
|
*/
|
|
static void R_CreateNoFalloffImage( idImage* image )
|
|
{
|
|
int x, y;
|
|
byte data[16][FALLOFF_TEXTURE_SIZE][4];
|
|
|
|
memset( data, 0, sizeof( data ) );
|
|
for( x = 1 ; x < FALLOFF_TEXTURE_SIZE - 1 ; x++ )
|
|
{
|
|
for( y = 1 ; y < 15 ; y++ )
|
|
{
|
|
data[y][x][0] = 255;
|
|
data[y][x][1] = 255;
|
|
data[y][x][2] = 255;
|
|
data[y][x][3] = 255;
|
|
}
|
|
}
|
|
image->GenerateImage( ( byte* )data, FALLOFF_TEXTURE_SIZE, 16, TF_DEFAULT, TR_CLAMP_TO_ZERO, TD_LOOKUP_TABLE_MONO );
|
|
}
|
|
|
|
/*
|
|
================
|
|
R_FogImage
|
|
|
|
We calculate distance correctly in two planes, but the
|
|
third will still be projection based
|
|
================
|
|
*/
|
|
const int FOG_SIZE = 128;
|
|
|
|
void R_FogImage( idImage* image )
|
|
{
|
|
int x, y;
|
|
byte data[FOG_SIZE][FOG_SIZE][4];
|
|
int b;
|
|
|
|
float step[256];
|
|
int i;
|
|
float remaining = 1.0;
|
|
for( i = 0 ; i < 256 ; i++ )
|
|
{
|
|
step[i] = remaining;
|
|
remaining *= 0.982f;
|
|
}
|
|
|
|
for( x = 0 ; x < FOG_SIZE ; x++ )
|
|
{
|
|
for( y = 0 ; y < FOG_SIZE ; y++ )
|
|
{
|
|
float d;
|
|
|
|
d = idMath::Sqrt( ( x - FOG_SIZE / 2 ) * ( x - FOG_SIZE / 2 )
|
|
+ ( y - FOG_SIZE / 2 ) * ( y - FOG_SIZE / 2 ) );
|
|
d /= FOG_SIZE / 2 - 1;
|
|
|
|
b = ( byte )( d * 255 );
|
|
if( b <= 0 )
|
|
{
|
|
b = 0;
|
|
}
|
|
else if( b > 255 )
|
|
{
|
|
b = 255;
|
|
}
|
|
b = ( byte )( 255 * ( 1.0 - step[b] ) );
|
|
if( x == 0 || x == FOG_SIZE - 1 || y == 0 || y == FOG_SIZE - 1 )
|
|
{
|
|
b = 255; // avoid clamping issues
|
|
}
|
|
data[y][x][0] =
|
|
data[y][x][1] =
|
|
data[y][x][2] = 255;
|
|
data[y][x][3] = b;
|
|
}
|
|
}
|
|
|
|
image->GenerateImage( ( byte* )data, FOG_SIZE, FOG_SIZE, TF_LINEAR, TR_CLAMP, TD_LOOKUP_TABLE_ALPHA );
|
|
}
|
|
|
|
|
|
/*
|
|
================
|
|
FogFraction
|
|
|
|
Height values below zero are inside the fog volume
|
|
================
|
|
*/
|
|
static const float RAMP_RANGE = 8;
|
|
static const float DEEP_RANGE = -30;
|
|
static float FogFraction( float viewHeight, float targetHeight )
|
|
{
|
|
float total = idMath::Fabs( targetHeight - viewHeight );
|
|
|
|
// return targetHeight >= 0 ? 0 : 1.0;
|
|
|
|
// only ranges that cross the ramp range are special
|
|
if( targetHeight > 0 && viewHeight > 0 )
|
|
{
|
|
return 0.0;
|
|
}
|
|
if( targetHeight < -RAMP_RANGE && viewHeight < -RAMP_RANGE )
|
|
{
|
|
return 1.0;
|
|
}
|
|
|
|
float above;
|
|
if( targetHeight > 0 )
|
|
{
|
|
above = targetHeight;
|
|
}
|
|
else if( viewHeight > 0 )
|
|
{
|
|
above = viewHeight;
|
|
}
|
|
else
|
|
{
|
|
above = 0;
|
|
}
|
|
|
|
float rampTop, rampBottom;
|
|
|
|
if( viewHeight > targetHeight )
|
|
{
|
|
rampTop = viewHeight;
|
|
rampBottom = targetHeight;
|
|
}
|
|
else
|
|
{
|
|
rampTop = targetHeight;
|
|
rampBottom = viewHeight;
|
|
}
|
|
if( rampTop > 0 )
|
|
{
|
|
rampTop = 0;
|
|
}
|
|
if( rampBottom < -RAMP_RANGE )
|
|
{
|
|
rampBottom = -RAMP_RANGE;
|
|
}
|
|
|
|
float rampSlope = 1.0 / RAMP_RANGE;
|
|
|
|
if( !total )
|
|
{
|
|
return -viewHeight * rampSlope;
|
|
}
|
|
|
|
float ramp = ( 1.0 - ( rampTop * rampSlope + rampBottom * rampSlope ) * -0.5 ) * ( rampTop - rampBottom );
|
|
|
|
float frac = ( total - above - ramp ) / total;
|
|
|
|
// after it gets moderately deep, always use full value
|
|
float deepest = viewHeight < targetHeight ? viewHeight : targetHeight;
|
|
|
|
float deepFrac = deepest / DEEP_RANGE;
|
|
if( deepFrac >= 1.0 )
|
|
{
|
|
return 1.0;
|
|
}
|
|
|
|
frac = frac * ( 1.0 - deepFrac ) + deepFrac;
|
|
|
|
return frac;
|
|
}
|
|
|
|
/*
|
|
================
|
|
R_FogEnterImage
|
|
|
|
Modulate the fog alpha density based on the distance of the
|
|
start and end points to the terminator plane
|
|
================
|
|
*/
|
|
void R_FogEnterImage( idImage* image )
|
|
{
|
|
int x, y;
|
|
byte data[FOG_ENTER_SIZE][FOG_ENTER_SIZE][4];
|
|
int b;
|
|
|
|
for( x = 0 ; x < FOG_ENTER_SIZE ; x++ )
|
|
{
|
|
for( y = 0 ; y < FOG_ENTER_SIZE ; y++ )
|
|
{
|
|
float d;
|
|
|
|
d = FogFraction( x - ( FOG_ENTER_SIZE / 2 ), y - ( FOG_ENTER_SIZE / 2 ) );
|
|
|
|
b = ( byte )( d * 255 );
|
|
if( b <= 0 )
|
|
{
|
|
b = 0;
|
|
}
|
|
else if( b > 255 )
|
|
{
|
|
b = 255;
|
|
}
|
|
data[y][x][0] =
|
|
data[y][x][1] =
|
|
data[y][x][2] = 255;
|
|
data[y][x][3] = b;
|
|
}
|
|
}
|
|
|
|
// if mipmapped, acutely viewed surfaces fade wrong
|
|
image->GenerateImage( ( byte* )data, FOG_ENTER_SIZE, FOG_ENTER_SIZE, TF_LINEAR, TR_CLAMP, TD_LOOKUP_TABLE_ALPHA );
|
|
}
|
|
|
|
|
|
/*
|
|
================
|
|
R_QuadraticImage
|
|
|
|
================
|
|
*/
|
|
static const int QUADRATIC_WIDTH = 32;
|
|
static const int QUADRATIC_HEIGHT = 4;
|
|
|
|
void R_QuadraticImage( idImage* image )
|
|
{
|
|
int x, y;
|
|
byte data[QUADRATIC_HEIGHT][QUADRATIC_WIDTH][4];
|
|
int b;
|
|
|
|
|
|
for( x = 0 ; x < QUADRATIC_WIDTH ; x++ )
|
|
{
|
|
for( y = 0 ; y < QUADRATIC_HEIGHT ; y++ )
|
|
{
|
|
float d;
|
|
|
|
d = x - ( QUADRATIC_WIDTH / 2 - 0.5 );
|
|
d = idMath::Fabs( d );
|
|
d -= 0.5;
|
|
d /= QUADRATIC_WIDTH / 2;
|
|
|
|
d = 1.0 - d;
|
|
d = d * d;
|
|
|
|
b = ( byte )( d * 255 );
|
|
if( b <= 0 )
|
|
{
|
|
b = 0;
|
|
}
|
|
else if( b > 255 )
|
|
{
|
|
b = 255;
|
|
}
|
|
data[y][x][0] =
|
|
data[y][x][1] =
|
|
data[y][x][2] = b;
|
|
data[y][x][3] = 255;
|
|
}
|
|
}
|
|
|
|
image->GenerateImage( ( byte* )data, QUADRATIC_WIDTH, QUADRATIC_HEIGHT, TF_DEFAULT, TR_CLAMP, TD_LOOKUP_TABLE_RGB1 );
|
|
}
|
|
|
|
/*
|
|
================
|
|
idImageManager::CreateIntrinsicImages
|
|
================
|
|
*/
|
|
void idImageManager::CreateIntrinsicImages()
|
|
{
|
|
// create built in images
|
|
defaultImage = ImageFromFunction( "_default", R_DefaultImage );
|
|
whiteImage = ImageFromFunction( "_white", R_WhiteImage );
|
|
blackImage = ImageFromFunction( "_black", R_BlackImage );
|
|
flatNormalMap = ImageFromFunction( "_flat", R_FlatNormalImage );
|
|
alphaNotchImage = ImageFromFunction( "_alphaNotch", R_AlphaNotchImage );
|
|
fogImage = ImageFromFunction( "_fog", R_FogImage );
|
|
fogEnterImage = ImageFromFunction( "_fogEnter", R_FogEnterImage );
|
|
noFalloffImage = ImageFromFunction( "_noFalloff", R_CreateNoFalloffImage );
|
|
ImageFromFunction( "_quadratic", R_QuadraticImage );
|
|
|
|
// scratchImage is used for screen wipes/doublevision etc..
|
|
scratchImage = ImageFromFunction( "_scratch", R_RGBA8Image );
|
|
scratchImage2 = ImageFromFunction( "_scratch2", R_RGBA8Image );
|
|
accumImage = ImageFromFunction( "_accum", R_RGBA8Image );
|
|
currentRenderImage = ImageFromFunction( "_currentRender", R_RGBA8Image );
|
|
currentDepthImage = ImageFromFunction( "_currentDepth", R_DepthImage );
|
|
|
|
// save a copy of this for material comparison, because currentRenderImage may get
|
|
// reassigned during stereo rendering
|
|
originalCurrentRenderImage = currentRenderImage;
|
|
|
|
loadingIconImage = ImageFromFile( "textures/loadingicon2", TF_DEFAULT, TR_CLAMP, TD_DEFAULT, CF_2D );
|
|
hellLoadingIconImage = ImageFromFile( "textures/loadingicon3", TF_DEFAULT, TR_CLAMP, TD_DEFAULT, CF_2D );
|
|
|
|
release_assert( loadingIconImage->referencedOutsideLevelLoad );
|
|
release_assert( hellLoadingIconImage->referencedOutsideLevelLoad );
|
|
} |