mirror of
https://github.com/UberGames/GtkRadiant.git
synced 2024-11-24 04:41:34 +00:00
368 lines
9.7 KiB
C++
368 lines
9.7 KiB
C++
/*
|
|
Copyright (c) 2002 Forest "LordHavoc" Hale
|
|
|
|
All rights reserved.
|
|
|
|
Redistribution and use in source and binary forms, with or without modification,
|
|
are permitted provided that the following conditions are met:
|
|
|
|
Redistributions of source code must retain the above copyright notice, this list
|
|
of conditions and the following disclaimer.
|
|
|
|
Redistributions in binary form must reproduce the above copyright notice, this
|
|
list of conditions and the following disclaimer in the documentation and/or
|
|
other materials provided with the distribution.
|
|
|
|
Neither the name of Forest Hale nor the names of other contributors may be used
|
|
to endorse or promote products derived from this software without specific prior
|
|
written permission.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
|
|
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
|
|
DIRECT,INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
|
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
|
|
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include "stdafx.h"
|
|
#include "str.h"
|
|
|
|
static byte *row1 = NULL, *row2 = NULL;
|
|
static int rowsize = 0;
|
|
|
|
void R_ResampleTextureLerpLine( byte *in, byte *out, int inwidth, int outwidth, int bytesperpixel ){
|
|
int j, xi, oldx = 0, f, fstep, endx, lerp;
|
|
#define LERPBYTE( i ) out[i] = (byte) ( ( ( ( row2[i] - row1[i] ) * lerp ) >> 16 ) + row1[i] )
|
|
|
|
fstep = (int) ( inwidth * 65536.0f / outwidth );
|
|
endx = ( inwidth - 1 );
|
|
if ( bytesperpixel == 4 ) {
|
|
for ( j = 0,f = 0; j < outwidth; j++, f += fstep )
|
|
{
|
|
xi = f >> 16;
|
|
if ( xi != oldx ) {
|
|
in += ( xi - oldx ) * 4;
|
|
oldx = xi;
|
|
}
|
|
|
|
if ( xi < endx ) {
|
|
lerp = f & 0xFFFF;
|
|
*out++ = (byte) ( ( ( ( in[4] - in[0] ) * lerp ) >> 16 ) + in[0] );
|
|
*out++ = (byte) ( ( ( ( in[5] - in[1] ) * lerp ) >> 16 ) + in[1] );
|
|
*out++ = (byte) ( ( ( ( in[6] - in[2] ) * lerp ) >> 16 ) + in[2] );
|
|
*out++ = (byte) ( ( ( ( in[7] - in[3] ) * lerp ) >> 16 ) + in[3] );
|
|
}
|
|
else // last pixel of the line has no pixel to lerp to
|
|
{
|
|
*out++ = in[0];
|
|
*out++ = in[1];
|
|
*out++ = in[2];
|
|
*out++ = in[3];
|
|
}
|
|
}
|
|
}
|
|
else if ( bytesperpixel == 3 ) {
|
|
for ( j = 0, f = 0; j < outwidth; j++, f += fstep )
|
|
{
|
|
xi = f >> 16;
|
|
if ( xi != oldx ) {
|
|
in += ( xi - oldx ) * 3;
|
|
oldx = xi;
|
|
}
|
|
|
|
if ( xi < endx ) {
|
|
lerp = f & 0xFFFF;
|
|
*out++ = (byte) ( ( ( ( in[3] - in[0] ) * lerp ) >> 16 ) + in[0] );
|
|
*out++ = (byte) ( ( ( ( in[4] - in[1] ) * lerp ) >> 16 ) + in[1] );
|
|
*out++ = (byte) ( ( ( ( in[5] - in[2] ) * lerp ) >> 16 ) + in[2] );
|
|
}
|
|
else // last pixel of the line has no pixel to lerp to
|
|
{
|
|
*out++ = in[0];
|
|
*out++ = in[1];
|
|
*out++ = in[2];
|
|
}
|
|
}
|
|
}
|
|
else{
|
|
Sys_Printf( "R_ResampleTextureLerpLine: unsupported bytesperpixel %i\n", bytesperpixel );
|
|
}
|
|
}
|
|
|
|
/*
|
|
================
|
|
R_ResampleTexture
|
|
================
|
|
*/
|
|
void R_ResampleTexture( void *indata, int inwidth, int inheight, void *outdata, int outwidth, int outheight, int bytesperpixel ){
|
|
if ( rowsize < outwidth * bytesperpixel ) {
|
|
if ( row1 ) {
|
|
free( row1 );
|
|
}
|
|
if ( row2 ) {
|
|
free( row2 );
|
|
}
|
|
|
|
rowsize = outwidth * bytesperpixel;
|
|
row1 = (byte *)malloc( rowsize );
|
|
row2 = (byte *)malloc( rowsize );
|
|
}
|
|
|
|
if ( bytesperpixel == 4 ) {
|
|
int i, j, yi, oldy, f, fstep, lerp, endy = ( inheight - 1 ), inwidth4 = inwidth * 4, outwidth4 = outwidth * 4;
|
|
byte *inrow, *out;
|
|
out = (byte *)outdata;
|
|
fstep = (int) ( inheight * 65536.0f / outheight );
|
|
#define LERPBYTE( i ) out[i] = (byte) ( ( ( ( row2[i] - row1[i] ) * lerp ) >> 16 ) + row1[i] )
|
|
|
|
inrow = (byte *)indata;
|
|
oldy = 0;
|
|
R_ResampleTextureLerpLine( inrow, row1, inwidth, outwidth, bytesperpixel );
|
|
R_ResampleTextureLerpLine( inrow + inwidth4, row2, inwidth, outwidth, bytesperpixel );
|
|
|
|
for ( i = 0, f = 0; i < outheight; i++,f += fstep )
|
|
{
|
|
yi = f >> 16;
|
|
if ( yi < endy ) {
|
|
lerp = f & 0xFFFF;
|
|
if ( yi != oldy ) {
|
|
inrow = (byte *)indata + inwidth4 * yi;
|
|
if ( yi == oldy + 1 ) {
|
|
memcpy( row1, row2, outwidth4 );
|
|
}
|
|
else{
|
|
R_ResampleTextureLerpLine( inrow, row1, inwidth, outwidth, bytesperpixel );
|
|
}
|
|
|
|
R_ResampleTextureLerpLine( inrow + inwidth4, row2, inwidth, outwidth, bytesperpixel );
|
|
oldy = yi;
|
|
}
|
|
j = outwidth - 4;
|
|
while ( j >= 0 )
|
|
{
|
|
LERPBYTE( 0 );
|
|
LERPBYTE( 1 );
|
|
LERPBYTE( 2 );
|
|
LERPBYTE( 3 );
|
|
LERPBYTE( 4 );
|
|
LERPBYTE( 5 );
|
|
LERPBYTE( 6 );
|
|
LERPBYTE( 7 );
|
|
LERPBYTE( 8 );
|
|
LERPBYTE( 9 );
|
|
LERPBYTE( 10 );
|
|
LERPBYTE( 11 );
|
|
LERPBYTE( 12 );
|
|
LERPBYTE( 13 );
|
|
LERPBYTE( 14 );
|
|
LERPBYTE( 15 );
|
|
out += 16;
|
|
row1 += 16;
|
|
row2 += 16;
|
|
j -= 4;
|
|
}
|
|
if ( j & 2 ) {
|
|
LERPBYTE( 0 );
|
|
LERPBYTE( 1 );
|
|
LERPBYTE( 2 );
|
|
LERPBYTE( 3 );
|
|
LERPBYTE( 4 );
|
|
LERPBYTE( 5 );
|
|
LERPBYTE( 6 );
|
|
LERPBYTE( 7 );
|
|
out += 8;
|
|
row1 += 8;
|
|
row2 += 8;
|
|
}
|
|
if ( j & 1 ) {
|
|
LERPBYTE( 0 );
|
|
LERPBYTE( 1 );
|
|
LERPBYTE( 2 );
|
|
LERPBYTE( 3 );
|
|
out += 4;
|
|
row1 += 4;
|
|
row2 += 4;
|
|
}
|
|
row1 -= outwidth4;
|
|
row2 -= outwidth4;
|
|
}
|
|
else
|
|
{
|
|
if ( yi != oldy ) {
|
|
inrow = (byte *)indata + inwidth4 * yi;
|
|
if ( yi == oldy + 1 ) {
|
|
memcpy( row1, row2, outwidth4 );
|
|
}
|
|
else{
|
|
R_ResampleTextureLerpLine( inrow, row1, inwidth, outwidth, bytesperpixel );
|
|
}
|
|
|
|
oldy = yi;
|
|
}
|
|
memcpy( out, row1, outwidth4 );
|
|
}
|
|
}
|
|
}
|
|
else if ( bytesperpixel == 3 ) {
|
|
int i, j, yi, oldy, f, fstep, lerp, endy = ( inheight - 1 ), inwidth3 = inwidth * 3, outwidth3 = outwidth * 3;
|
|
byte *inrow, *out;
|
|
out = (byte *)outdata;
|
|
fstep = (int) ( inheight * 65536.0f / outheight );
|
|
#define LERPBYTE( i ) out[i] = (byte) ( ( ( ( row2[i] - row1[i] ) * lerp ) >> 16 ) + row1[i] )
|
|
|
|
inrow = (byte *)indata;
|
|
oldy = 0;
|
|
R_ResampleTextureLerpLine( inrow, row1, inwidth, outwidth, bytesperpixel );
|
|
R_ResampleTextureLerpLine( inrow + inwidth3, row2, inwidth, outwidth, bytesperpixel );
|
|
for ( i = 0, f = 0; i < outheight; i++,f += fstep )
|
|
{
|
|
yi = f >> 16;
|
|
if ( yi < endy ) {
|
|
lerp = f & 0xFFFF;
|
|
if ( yi != oldy ) {
|
|
inrow = (byte *)indata + inwidth3 * yi;
|
|
if ( yi == oldy + 1 ) {
|
|
memcpy( row1, row2, outwidth3 );
|
|
}
|
|
else{
|
|
R_ResampleTextureLerpLine( inrow, row1, inwidth, outwidth, bytesperpixel );
|
|
}
|
|
|
|
R_ResampleTextureLerpLine( inrow + inwidth3, row2, inwidth, outwidth, bytesperpixel );
|
|
oldy = yi;
|
|
}
|
|
j = outwidth - 4;
|
|
while ( j >= 0 )
|
|
{
|
|
LERPBYTE( 0 );
|
|
LERPBYTE( 1 );
|
|
LERPBYTE( 2 );
|
|
LERPBYTE( 3 );
|
|
LERPBYTE( 4 );
|
|
LERPBYTE( 5 );
|
|
LERPBYTE( 6 );
|
|
LERPBYTE( 7 );
|
|
LERPBYTE( 8 );
|
|
LERPBYTE( 9 );
|
|
LERPBYTE( 10 );
|
|
LERPBYTE( 11 );
|
|
out += 12;
|
|
row1 += 12;
|
|
row2 += 12;
|
|
j -= 4;
|
|
}
|
|
if ( j & 2 ) {
|
|
LERPBYTE( 0 );
|
|
LERPBYTE( 1 );
|
|
LERPBYTE( 2 );
|
|
LERPBYTE( 3 );
|
|
LERPBYTE( 4 );
|
|
LERPBYTE( 5 );
|
|
out += 6;
|
|
row1 += 6;
|
|
row2 += 6;
|
|
}
|
|
if ( j & 1 ) {
|
|
LERPBYTE( 0 );
|
|
LERPBYTE( 1 );
|
|
LERPBYTE( 2 );
|
|
out += 3;
|
|
row1 += 3;
|
|
row2 += 3;
|
|
}
|
|
row1 -= outwidth3;
|
|
row2 -= outwidth3;
|
|
}
|
|
else
|
|
{
|
|
if ( yi != oldy ) {
|
|
inrow = (byte *)indata + inwidth3 * yi;
|
|
if ( yi == oldy + 1 ) {
|
|
memcpy( row1, row2, outwidth3 );
|
|
}
|
|
else{
|
|
R_ResampleTextureLerpLine( inrow, row1, inwidth, outwidth, bytesperpixel );
|
|
}
|
|
|
|
oldy = yi;
|
|
}
|
|
memcpy( out, row1, outwidth3 );
|
|
}
|
|
}
|
|
}
|
|
else{
|
|
Sys_Printf( "R_ResampleTexture: unsupported bytesperpixel %i\n", bytesperpixel );
|
|
}
|
|
}
|
|
|
|
// in can be the same as out
|
|
void GL_MipReduce( byte *in, byte *out, int width, int height, int destwidth, int destheight ){
|
|
int x, y, width2, height2, nextrow;
|
|
if ( width > destwidth ) {
|
|
if ( height > destheight ) {
|
|
// reduce both
|
|
width2 = width >> 1;
|
|
height2 = height >> 1;
|
|
nextrow = width << 2;
|
|
for ( y = 0; y < height2; y++ )
|
|
{
|
|
for ( x = 0; x < width2; x++ )
|
|
{
|
|
out[0] = (byte) ( ( in[0] + in[4] + in[nextrow ] + in[nextrow + 4] ) >> 2 );
|
|
out[1] = (byte) ( ( in[1] + in[5] + in[nextrow + 1] + in[nextrow + 5] ) >> 2 );
|
|
out[2] = (byte) ( ( in[2] + in[6] + in[nextrow + 2] + in[nextrow + 6] ) >> 2 );
|
|
out[3] = (byte) ( ( in[3] + in[7] + in[nextrow + 3] + in[nextrow + 7] ) >> 2 );
|
|
out += 4;
|
|
in += 8;
|
|
}
|
|
in += nextrow; // skip a line
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// reduce width
|
|
width2 = width >> 1;
|
|
for ( y = 0; y < height; y++ )
|
|
{
|
|
for ( x = 0; x < width2; x++ )
|
|
{
|
|
out[0] = (byte) ( ( in[0] + in[4] ) >> 1 );
|
|
out[1] = (byte) ( ( in[1] + in[5] ) >> 1 );
|
|
out[2] = (byte) ( ( in[2] + in[6] ) >> 1 );
|
|
out[3] = (byte) ( ( in[3] + in[7] ) >> 1 );
|
|
out += 4;
|
|
in += 8;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if ( height > destheight ) {
|
|
// reduce height
|
|
height2 = height >> 1;
|
|
nextrow = width << 2;
|
|
for ( y = 0; y < height2; y++ )
|
|
{
|
|
for ( x = 0; x < width; x++ )
|
|
{
|
|
out[0] = (byte) ( ( in[0] + in[nextrow ] ) >> 1 );
|
|
out[1] = (byte) ( ( in[1] + in[nextrow + 1] ) >> 1 );
|
|
out[2] = (byte) ( ( in[2] + in[nextrow + 2] ) >> 1 );
|
|
out[3] = (byte) ( ( in[3] + in[nextrow + 3] ) >> 1 );
|
|
out += 4;
|
|
in += 4;
|
|
}
|
|
in += nextrow; // skip a line
|
|
}
|
|
}
|
|
else{
|
|
Sys_Printf( "GL_MipReduce: desired size already achieved\n" );
|
|
}
|
|
}
|
|
}
|