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ref: add GL_ResampleTexture to libref_common

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This commit is contained in:
Alibek Omarov
2026-04-12 23:29:56 +05:00
committed by a1batross
parent d85e7fc2b1
commit 7324ff43fc
9 changed files with 114 additions and 191 deletions
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5
ref/common/ref_common.h
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@@ -54,6 +54,7 @@ void *_Mem_Realloc( poolhandle_t poolptr, void *memptr, size_t size, qboolean cl
extern dlight_t *gp_dlights;
extern int g_lightstylevalue[MAX_LIGHTSTYLES];
extern poolhandle_t r_temppool;
//
// ref_common cvars
@@ -82,5 +83,9 @@ colorVec R_LightVec( const vec3_t start, const vec3_t end, vec3_t lspot, vec3_t
colorVec R_LightPoint( const vec3_t p0 );
void R_UpdateSurfaceCachedLight( msurface_t *surf );
//
// ref_image.c
//
byte *GL_ResampleTexture( const byte *source, int in_w, int in_h, int out_w, int out_h, qboolean isNormalMap );
#endif // REF_COMMON_H

1
ref/common/ref_context.c
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@@ -25,6 +25,7 @@ ref_host_t *gp_host;
uint16_t rtable[MOD_FRAMES][MOD_FRAMES];
dlight_t *gp_dlights;
int g_lightstylevalue[MAX_LIGHTSTYLES];
poolhandle_t r_temppool;
void _Mem_Free( void *data, const char *filename, int fileline )
{

108
ref/common/ref_image.c Normal file
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@@ -0,0 +1,108 @@
/*
ref_image.c - shared image code
Copyright (C) 2010 Uncle Mike
This program 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.
This program 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.
*/
#include "ref_common.h"
#include "xash3d_mathlib.h"
/*
================
GL_ResampleTexture
Assume input buffer is RGBA
=================
*/
byte *GL_ResampleTexture( const byte *source, int inWidth, int inHeight, int outWidth, int outHeight, qboolean isNormalMap )
{
uint frac, fracStep;
uint *in = (uint *)source;
uint p1[0x1000], p2[0x1000];
byte *pix1, *pix2, *pix3, *pix4;
uint *out, *inRow1, *inRow2;
static byte *scaledImage = NULL; // pointer to a scaled image
vec3_t normal;
int i, x, y;
if( !source ) return NULL;
scaledImage = Mem_Realloc( r_temppool, scaledImage, outWidth * outHeight * 4 );
fracStep = inWidth * 0x10000 / outWidth;
out = (uint *)scaledImage;
frac = fracStep >> 2;
for( i = 0; i < outWidth; i++ )
{
p1[i] = 4 * (frac >> 16);
frac += fracStep;
}
frac = (fracStep >> 2) * 3;
for( i = 0; i < outWidth; i++ )
{
p2[i] = 4 * (frac >> 16);
frac += fracStep;
}
if( isNormalMap )
{
for( y = 0; y < outHeight; y++, out += outWidth )
{
inRow1 = in + inWidth * (int)(((float)y + 0.25f) * inHeight / outHeight);
inRow2 = in + inWidth * (int)(((float)y + 0.75f) * inHeight / outHeight);
for( x = 0; x < outWidth; x++ )
{
pix1 = (byte *)inRow1 + p1[x];
pix2 = (byte *)inRow1 + p2[x];
pix3 = (byte *)inRow2 + p1[x];
pix4 = (byte *)inRow2 + p2[x];
normal[0] = MAKE_SIGNED( pix1[0] ) + MAKE_SIGNED( pix2[0] ) + MAKE_SIGNED( pix3[0] ) + MAKE_SIGNED( pix4[0] );
normal[1] = MAKE_SIGNED( pix1[1] ) + MAKE_SIGNED( pix2[1] ) + MAKE_SIGNED( pix3[1] ) + MAKE_SIGNED( pix4[1] );
normal[2] = MAKE_SIGNED( pix1[2] ) + MAKE_SIGNED( pix2[2] ) + MAKE_SIGNED( pix3[2] ) + MAKE_SIGNED( pix4[2] );
if( !VectorNormalizeLength( normal ))
VectorSet( normal, 0.5f, 0.5f, 1.0f );
((byte *)(out+x))[0] = 128 + (byte)(127.0f * normal[0]);
((byte *)(out+x))[1] = 128 + (byte)(127.0f * normal[1]);
((byte *)(out+x))[2] = 128 + (byte)(127.0f * normal[2]);
((byte *)(out+x))[3] = 255;
}
}
}
else
{
for( y = 0; y < outHeight; y++, out += outWidth )
{
inRow1 = in + inWidth * (int)(((float)y + 0.25f) * inHeight / outHeight);
inRow2 = in + inWidth * (int)(((float)y + 0.75f) * inHeight / outHeight);
for( x = 0; x < outWidth; x++ )
{
pix1 = (byte *)inRow1 + p1[x];
pix2 = (byte *)inRow1 + p2[x];
pix3 = (byte *)inRow2 + p1[x];
pix4 = (byte *)inRow2 + p2[x];
((byte *)(out+x))[0] = (pix1[0] + pix2[0] + pix3[0] + pix4[0]) >> 2;
((byte *)(out+x))[1] = (pix1[1] + pix2[1] + pix3[1] + pix4[1]) >> 2;
((byte *)(out+x))[2] = (pix1[2] + pix2[2] + pix3[2] + pix4[2]) >> 2;
((byte *)(out+x))[3] = (pix1[3] + pix2[3] + pix3[3] + pix4[3]) >> 2;
}
}
}
return scaledImage;
}

91
ref/gl/gl_image.c
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@@ -691,97 +691,6 @@ static void GL_SetTextureFormat( gl_texture_t *tex, pixformat_t format, int chan
}
}
/*
=================
GL_ResampleTexture
Assume input buffer is RGBA
=================
*/
byte *GL_ResampleTexture( const byte *source, int inWidth, int inHeight, int outWidth, int outHeight, qboolean isNormalMap )
{
uint frac, fracStep;
uint *in = (uint *)source;
uint p1[0x1000], p2[0x1000];
byte *pix1, *pix2, *pix3, *pix4;
uint *out, *inRow1, *inRow2;
static byte *scaledImage = NULL; // pointer to a scaled image
vec3_t normal;
int i, x, y;
if( !source ) return NULL;
scaledImage = Mem_Realloc( r_temppool, scaledImage, outWidth * outHeight * 4 );
fracStep = inWidth * 0x10000 / outWidth;
out = (uint *)scaledImage;
frac = fracStep >> 2;
for( i = 0; i < outWidth; i++ )
{
p1[i] = 4 * (frac >> 16);
frac += fracStep;
}
frac = (fracStep >> 2) * 3;
for( i = 0; i < outWidth; i++ )
{
p2[i] = 4 * (frac >> 16);
frac += fracStep;
}
if( isNormalMap )
{
for( y = 0; y < outHeight; y++, out += outWidth )
{
inRow1 = in + inWidth * (int)(((float)y + 0.25f) * inHeight / outHeight);
inRow2 = in + inWidth * (int)(((float)y + 0.75f) * inHeight / outHeight);
for( x = 0; x < outWidth; x++ )
{
pix1 = (byte *)inRow1 + p1[x];
pix2 = (byte *)inRow1 + p2[x];
pix3 = (byte *)inRow2 + p1[x];
pix4 = (byte *)inRow2 + p2[x];
normal[0] = MAKE_SIGNED( pix1[0] ) + MAKE_SIGNED( pix2[0] ) + MAKE_SIGNED( pix3[0] ) + MAKE_SIGNED( pix4[0] );
normal[1] = MAKE_SIGNED( pix1[1] ) + MAKE_SIGNED( pix2[1] ) + MAKE_SIGNED( pix3[1] ) + MAKE_SIGNED( pix4[1] );
normal[2] = MAKE_SIGNED( pix1[2] ) + MAKE_SIGNED( pix2[2] ) + MAKE_SIGNED( pix3[2] ) + MAKE_SIGNED( pix4[2] );
if( !VectorNormalizeLength( normal ))
VectorSet( normal, 0.5f, 0.5f, 1.0f );
((byte *)(out+x))[0] = 128 + (byte)(127.0f * normal[0]);
((byte *)(out+x))[1] = 128 + (byte)(127.0f * normal[1]);
((byte *)(out+x))[2] = 128 + (byte)(127.0f * normal[2]);
((byte *)(out+x))[3] = 255;
}
}
}
else
{
for( y = 0; y < outHeight; y++, out += outWidth )
{
inRow1 = in + inWidth * (int)(((float)y + 0.25f) * inHeight / outHeight);
inRow2 = in + inWidth * (int)(((float)y + 0.75f) * inHeight / outHeight);
for( x = 0; x < outWidth; x++ )
{
pix1 = (byte *)inRow1 + p1[x];
pix2 = (byte *)inRow1 + p2[x];
pix3 = (byte *)inRow2 + p1[x];
pix4 = (byte *)inRow2 + p2[x];
((byte *)(out+x))[0] = (pix1[0] + pix2[0] + pix3[0] + pix4[0]) >> 2;
((byte *)(out+x))[1] = (pix1[1] + pix2[1] + pix3[1] + pix4[1]) >> 2;
((byte *)(out+x))[2] = (pix1[2] + pix2[2] + pix3[2] + pix4[2]) >> 2;
((byte *)(out+x))[3] = (pix1[3] + pix2[3] + pix3[3] + pix4[3]) >> 2;
}
}
}
return scaledImage;
}
/*
=================
GL_BoxFilter3x3

2
ref/gl/gl_local.h
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@@ -54,7 +54,6 @@ void VGL_ShimEndFrame( void );
#define LM_SAMPLE_SIZE 16
extern poolhandle_t r_temppool;
#define BLOCK_SIZE tr.block_size // lightmap blocksize
#define BLOCK_SIZE_DEFAULT 128 // for keep backward compatibility
@@ -351,7 +350,6 @@ gl_texture_t *R_GetTexture( unsigned int texnum );
int GL_LoadTexture( const char *name, const byte *buf, size_t size, int flags );
int GL_LoadTextureArray( const char **names, int flags );
int GL_LoadTextureFromBuffer( const char *name, rgbdata_t *pic, texFlags_t flags, qboolean update );
byte *GL_ResampleTexture( const byte *source, int in_w, int in_h, int out_w, int out_h, qboolean isNormalMap );
int GL_CreateTexture( const char *name, int width, int height, const void *buffer, texFlags_t flags );
int GL_CreateTextureArray( const char *name, int width, int height, int depth, const void *buffer, texFlags_t flags );
void GL_ProcessTexture( int texnum, float gamma, int topColor, int bottomColor );

2
ref/gl/gl_opengl.c
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@@ -40,8 +40,6 @@ CVAR_DEFINE_AUTO( r_ripple_spawntime, "0.1", FCVAR_GLCONFIG, "how fast new rippl
CVAR_DEFINE_AUTO( r_large_lightmaps, "0", FCVAR_GLCONFIG|FCVAR_LATCH, "enable larger lightmap atlas textures (might break custom renderer mods)" );
poolhandle_t r_temppool;
gl_globals_t tr;
glconfig_t glConfig;
glstate_t glState;

1
ref/soft/r_context.c
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@@ -17,7 +17,6 @@ GNU General Public License for more details.
gl_globals_t tr;
ref_speeds_t r_stats;
poolhandle_t r_temppool;
viddef_t vid;

92
ref/soft/r_image.c
View File

@@ -115,98 +115,6 @@ static void GL_SetTextureDimensions( image_t *tex, int width, int height, int de
tex->depth = Q_max( 1, depth );
}
/*
=================
GL_ResampleTexture
Assume input buffer is RGBA
=================
*/
byte *GL_ResampleTexture( const byte *source, int inWidth, int inHeight, int outWidth, int outHeight, qboolean isNormalMap )
{
uint frac, fracStep;
uint *in = (uint *)source;
uint p1[0x1000], p2[0x1000];
byte *pix1, *pix2, *pix3, *pix4;
uint *out, *inRow1, *inRow2;
static byte *scaledImage = NULL; // pointer to a scaled image
vec3_t normal;
int i, x, y;
if( !source )
return NULL;
scaledImage = Mem_Realloc( r_temppool, scaledImage, outWidth * outHeight * 4 );
fracStep = inWidth * 0x10000 / outWidth;
out = (uint *)scaledImage;
frac = fracStep >> 2;
for( i = 0; i < outWidth; i++ )
{
p1[i] = 4 * ( frac >> 16 );
frac += fracStep;
}
frac = ( fracStep >> 2 ) * 3;
for( i = 0; i < outWidth; i++ )
{
p2[i] = 4 * ( frac >> 16 );
frac += fracStep;
}
if( isNormalMap )
{
for( y = 0; y < outHeight; y++, out += outWidth )
{
inRow1 = in + inWidth * (int)(((float)y + 0.25f ) * inHeight / outHeight );
inRow2 = in + inWidth * (int)(((float)y + 0.75f ) * inHeight / outHeight );
for( x = 0; x < outWidth; x++ )
{
pix1 = (byte *)inRow1 + p1[x];
pix2 = (byte *)inRow1 + p2[x];
pix3 = (byte *)inRow2 + p1[x];
pix4 = (byte *)inRow2 + p2[x];
normal[0] = MAKE_SIGNED( pix1[0] ) + MAKE_SIGNED( pix2[0] ) + MAKE_SIGNED( pix3[0] ) + MAKE_SIGNED( pix4[0] );
normal[1] = MAKE_SIGNED( pix1[1] ) + MAKE_SIGNED( pix2[1] ) + MAKE_SIGNED( pix3[1] ) + MAKE_SIGNED( pix4[1] );
normal[2] = MAKE_SIGNED( pix1[2] ) + MAKE_SIGNED( pix2[2] ) + MAKE_SIGNED( pix3[2] ) + MAKE_SIGNED( pix4[2] );
if( !VectorNormalizeLength( normal ))
VectorSet( normal, 0.5f, 0.5f, 1.0f );
((byte *)( out + x ))[0] = 128 + (byte)( 127.0f * normal[0] );
((byte *)( out + x ))[1] = 128 + (byte)( 127.0f * normal[1] );
((byte *)( out + x ))[2] = 128 + (byte)( 127.0f * normal[2] );
((byte *)( out + x ))[3] = 255;
}
}
}
else
{
for( y = 0; y < outHeight; y++, out += outWidth )
{
inRow1 = in + inWidth * (int)(((float)y + 0.25f ) * inHeight / outHeight );
inRow2 = in + inWidth * (int)(((float)y + 0.75f ) * inHeight / outHeight );
for( x = 0; x < outWidth; x++ )
{
pix1 = (byte *)inRow1 + p1[x];
pix2 = (byte *)inRow1 + p2[x];
pix3 = (byte *)inRow2 + p1[x];
pix4 = (byte *)inRow2 + p2[x];
((byte *)( out + x ))[0] = ( pix1[0] + pix2[0] + pix3[0] + pix4[0] ) >> 2;
((byte *)( out + x ))[1] = ( pix1[1] + pix2[1] + pix3[1] + pix4[1] ) >> 2;
((byte *)( out + x ))[2] = ( pix1[2] + pix2[2] + pix3[2] + pix4[2] ) >> 2;
((byte *)( out + x ))[3] = ( pix1[3] + pix2[3] + pix3[3] + pix4[3] ) >> 2;
}
}
}
return scaledImage;
}
/*
=================
GL_BuildMipMap

3
ref/soft/r_local.h
View File

@@ -38,8 +38,6 @@ typedef int fixed16_t;
// make mod_ref.h?
#define LM_SAMPLE_SIZE 16
extern poolhandle_t r_temppool;
#define BLOCK_SIZE tr.block_size // lightmap blocksize
#define BLOCK_SIZE_DEFAULT 128 // for keep backward compatibility
#define BLOCK_SIZE_MAX 1024
@@ -367,7 +365,6 @@ image_t *R_GetTexture( unsigned int texnum );
int GL_LoadTexture( const char *name, const byte *buf, size_t size, int flags );
int GL_LoadTextureArray( const char **names, int flags );
int GL_LoadTextureFromBuffer( const char *name, rgbdata_t *pic, texFlags_t flags, qboolean update );
byte *GL_ResampleTexture( const byte *source, int in_w, int in_h, int out_w, int out_h, qboolean isNormalMap );
int GL_CreateTexture( const char *name, int width, int height, const void *buffer, texFlags_t flags );
int GL_CreateTextureArray( const char *name, int width, int height, int depth, const void *buffer, texFlags_t flags );
void GL_ProcessTexture( int texnum, float gamma, int topColor, int bottomColor );