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7ea35ebb250cb561943b3f83aa0d25d98985ab6b
itgmania212121/stepmania/src/RageBitmapTexture.cpp
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Chris Danford 7ea35ebb25 add prefs: ForceMipMaps, AnisotropicFiltering
2004-05-18 08:43:21 +00:00

349 lines
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#include "global.h"
#include "RageBitmapTexture.h"
#include "RageUtil.h"
#include "RageLog.h"
#include "RageTextureManager.h"
#include "RageException.h"
#include "RageDisplay.h"
#include "RageTypes.h"
#include "arch/ArchHooks/ArchHooks.h"
#include "PrefsManager.h"
#include "SDL.h"
#include "SDL_endian.h"
#include "SDL_rotozoom.h"
#include "SDL_utils.h"
#include "SDL_dither.h"
#include "RageSurface_Load.h"
static void GetResolutionFromFileName( CString sPath, int &Width, int &Height )
{
/* Match:
* Foo (res 512x128).png
* Also allow, eg:
* Foo (dither, res 512x128).png
*
* Be careful that this doesn't get mixed up with frame dimensions. */
Regex re("\\([^\\)]*res ([0-9]+)x([0-9]+).*\\)");
vector<CString> matches;
if(!re.Compare(sPath, matches))
return;
Width = atoi(matches[0].c_str());
Height = atoi(matches[1].c_str());
}
//-----------------------------------------------------------------------------
// RageBitmapTexture constructor
//-----------------------------------------------------------------------------
RageBitmapTexture::RageBitmapTexture( RageTextureID name ) :
RageTexture( name )
{
// LOG->Trace( "RageBitmapTexture::RageBitmapTexture()" );
Create();
}
RageBitmapTexture::~RageBitmapTexture()
{
Destroy();
}
void RageBitmapTexture::Reload()
{
Destroy();
Create();
}
/*
* Each dwMaxSize, dwTextureColorDepth and iAlphaBits are maximums; we may
* use less. iAlphaBits must be 0, 1 or 4.
*
* XXX: change iAlphaBits == 4 to iAlphaBits == 8 to indicate "as much alpha
* as needed", since that's what it really is; still only use 4 in 16-bit textures.
*
* Dither forces dithering when loading 16-bit textures.
* Stretch forces the loaded image to fill the texture completely.
*/
void RageBitmapTexture::Create()
{
RageTextureID actualID = GetID();
/* Create (and return) a surface ready to be loaded to OpenGL */
/* Load the image into an SDL surface. */
SDL_Surface *img = RageSurface::LoadFile( actualID.filename );
/* Tolerate corrupt/unknown images. */
if( img == NULL )
{
LOG->Warn( "RageBitmapTexture: Couldn't load %s: %s", actualID.filename.c_str(), SDL_GetError() );
img = mySDL_MakeDummySurface( 64, 64 );
ASSERT( img != NULL );
}
if(actualID.bHotPinkColorKey)
ApplyHotPinkColorKey( img );
{
/* Do this after setting the color key for paletted images; it'll also return
* TRAIT_NO_TRANSPARENCY if the color key is never used. */
int traits = FindSurfaceTraits(img);
if(traits & TRAIT_NO_TRANSPARENCY)
actualID.iAlphaBits = 0;
else if(traits & TRAIT_BOOL_TRANSPARENCY)
actualID.iAlphaBits = 1;
}
// look in the file name for a format hints
CString HintString = GetID().filename + actualID.AdditionalTextureHints;
HintString.MakeLower();
if( HintString.Find("32bpp") != -1 ) actualID.iColorDepth = 32;
else if( HintString.Find("16bpp") != -1 ) actualID.iColorDepth = 16;
if( HintString.Find("dither") != -1 ) actualID.bDither = true;
if( HintString.Find("stretch") != -1 ) actualID.bStretch = true;
if( HintString.Find("nomipmaps") != -1 ) actualID.bMipMaps = false;
/* If the image is marked grayscale, then use all bits not used for alpha
* for the intensity. This way, if an image has no alpha, you get an 8-bit
* grayscale; if it only has boolean transparency, you get a 7-bit grayscale. */
if( HintString.Find("grayscale") != -1 ) actualID.iGrayscaleBits = 8-actualID.iAlphaBits;
/* This indicates that the only component in the texture is alpha; assume all
* color is white. */
if( HintString.Find("alphamap") != -1 ) actualID.iGrayscaleBits = 0;
/* No iGrayscaleBits for images that are already paletted. We don't support
* that; and that hint is intended for use on images that are already grayscale,
* it's not intended to change a color image into a grayscale image. */
if( actualID.iGrayscaleBits != -1 && img->format->BitsPerPixel == 8 )
actualID.iGrayscaleBits = -1;
if( PREFSMAN->m_bForceMipMaps )
actualID.bMipMaps = true;
/* Cap the max texture size to the hardware max. */
actualID.iMaxSize = min( actualID.iMaxSize, DISPLAY->GetMaxTextureSize() );
/* Save information about the source. */
m_iSourceWidth = img->w;
m_iSourceHeight = img->h;
/* image size cannot exceed max size */
m_iImageWidth = min( m_iSourceWidth, actualID.iMaxSize );
m_iImageHeight = min( m_iSourceHeight, actualID.iMaxSize );
/* Texture dimensions need to be a power of two; jump to the next. */
m_iTextureWidth = power_of_two(m_iImageWidth);
m_iTextureHeight = power_of_two(m_iImageHeight);
/* If we're under 8x8, increase it, to avoid filtering problems on odd hardware. */
if(m_iTextureWidth < 8 || m_iTextureHeight < 8)
{
actualID.bStretch = true;
m_iTextureWidth = max(8, m_iTextureWidth);
m_iTextureHeight = max(8, m_iTextureHeight);
}
ASSERT( m_iTextureWidth <= actualID.iMaxSize );
ASSERT( m_iTextureHeight <= actualID.iMaxSize );
if(actualID.bStretch)
{
/* The hints asked for the image to be stretched to the texture size,
* probably for tiling. */
m_iImageWidth = m_iTextureWidth;
m_iImageHeight = m_iTextureHeight;
}
if( img->w != m_iImageWidth || img->h != m_iImageHeight )
{
/* resize currently only does RGBA8888 */
ConvertSDLSurface(img, img->w, img->h, 32, 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000);
zoomSurface(img, m_iImageWidth, m_iImageHeight );
}
// Format of the image that we will pass to OpenGL and that we want OpenGL to use
RageDisplay::PixelFormat pixfmt;
if( actualID.iGrayscaleBits != -1 && DISPLAY->SupportsTextureFormat(RageDisplay::FMT_PAL) )
{
SDL_Surface *dst = mySDL_Palettize( img, actualID.iGrayscaleBits, actualID.iAlphaBits );
SDL_FreeSurface(img);
img = dst;
}
/* Figure out which texture format to use. */
// if the source is palleted, load palleted no matter what the prefs
if(img->format->BitsPerPixel == 8 && DISPLAY->SupportsTextureFormat(RageDisplay::FMT_PAL))
{
pixfmt = RageDisplay::FMT_PAL;
}
else
{
// not paletted
switch( actualID.iColorDepth )
{
case 16:
{
/* Bits of alpha in the source: */
int src_alpha_bits = 8 - img->format->Aloss;
/* Aloss is wrong when BytesPerPixel == 1. */
if( img->format->BytesPerPixel == 1 )
src_alpha_bits = 8;
/* Don't use more than we were hinted to. */
src_alpha_bits = min( actualID.iAlphaBits, src_alpha_bits );
switch( src_alpha_bits ) {
case 0:
case 1:
pixfmt = RageDisplay::FMT_RGB5A1;
break;
default:
pixfmt = RageDisplay::FMT_RGBA4;
break;
}
}
break;
case 32:
pixfmt = RageDisplay::FMT_RGBA8;
break;
default:
RageException::Throw( "Invalid color depth: %d bits", actualID.iColorDepth );
}
/* It's either not a paletted image, or we can't handle paletted textures.
* Convert to the desired RGBA format, dithering if appropriate. */
if( actualID.bDither &&
(pixfmt==RageDisplay::FMT_RGBA4 || pixfmt==RageDisplay::FMT_RGB5A1) ) /* Don't dither if format is 32bpp; there's no point. */
{
/* Dither down to the destination format. */
const RageDisplay::PixelFormatDesc *pfd = DISPLAY->GetPixelFormatDesc(pixfmt);
SDL_Surface *dst = SDL_CreateRGBSurfaceSane(SDL_SWSURFACE, img->w, img->h,
pfd->bpp, pfd->masks[0], pfd->masks[1], pfd->masks[2], pfd->masks[3]);
SM_SDL_ErrorDiffusionDither(img, dst);
SDL_FreeSurface(img);
img = dst;
}
}
/* This needs to be done *after* the final resize, since that resize
* may introduce new alpha bits that need to be set. It needs to be
* done *before* we set up the palette, since it might change it. */
FixHiddenAlpha(img);
/* Make we're using a supported format.
* Every card supports either RGBA8 or RGBA4. */
if( !DISPLAY->SupportsTextureFormat(pixfmt) )
{
pixfmt = RageDisplay::FMT_RGBA8;
if( !DISPLAY->SupportsTextureFormat(pixfmt) )
pixfmt = RageDisplay::FMT_RGBA4;
}
/* Convert the data to the destination format and dimensions
* required by OpenGL if it's not in it already. */
const RageDisplay::PixelFormatDesc *pfd = DISPLAY->GetPixelFormatDesc(pixfmt);
ConvertSDLSurface(img, m_iTextureWidth, m_iTextureHeight,
pfd->bpp, pfd->masks[0], pfd->masks[1], pfd->masks[2], pfd->masks[3]);
m_uTexHandle = DISPLAY->CreateTexture( pixfmt, img, actualID.bMipMaps );
CreateFrameRects();
//
// Enforce frames in the image have even dimensions. Otherwise,
// pixel/texel alignment will be off.
//
bool bRunCheck = true;
// Don't check if the artist intentionally blanked the image by making it very tiny.
if( this->GetSourceWidth()<=2 || this->GetSourceHeight()<=2 )
bRunCheck = false;
// HACK: Don't check song graphics. Many of them are weird dimensions.
if( !TEXTUREMAN->GetOddDimensionWarning() )
bRunCheck = false;
if( bRunCheck )
{
float fFrameWidth = this->GetSourceWidth() / (float)this->GetFramesWide();
float fFrameHeight = this->GetSourceHeight() / (float)this->GetFramesHigh();
float fBetterFrameWidth = roundf((fFrameWidth+0.99f)/2)*2;
float fBetterFrameHeight = roundf((fFrameHeight+0.99f)/2)*2;
float fBetterSourceWidth = this->GetFramesWide() * fBetterFrameWidth;
float fBetterSourceHeight = this->GetFramesHigh() * fBetterFrameHeight;
if( fFrameWidth!=fBetterFrameWidth || fFrameHeight!=fBetterFrameHeight )
{
CString sWarning = ssprintf(
"The graphic '%s' has frame dimensions that aren't even numbers.\n\n"
"The entire image is %dx%d and frame size is %.1fx%.1f.\n\n"
"Image quality will be much improved if you resize the graphic to %.0fx%.0f, which is a frame size of %.0fx%.0f.",
actualID.filename.c_str(),
this->GetSourceWidth(), this->GetSourceHeight(),
fFrameWidth, fFrameHeight,
fBetterSourceWidth, fBetterSourceHeight,
fBetterFrameWidth, fBetterFrameHeight );
LOG->Warn( sWarning );
HOOKS->MessageBoxOK( sWarning, "FRAME_DIMENSIONS_WARNING" );
}
}
SDL_FreeSurface( img );
/* See if the apparent "size" is being overridden. */
GetResolutionFromFileName(actualID.filename, m_iSourceWidth, m_iSourceHeight);
CString props;
props += RageDisplay::PixelFormatToString( pixfmt ) + " ";
if(actualID.iAlphaBits == 0) props += "opaque ";
if(actualID.iAlphaBits == 1) props += "matte ";
if(actualID.bStretch) props += "stretch ";
if(actualID.bDither) props += "dither ";
props.erase(props.size()-1);
LOG->Trace( "RageBitmapTexture: Loaded '%s' (%ux%u); %s, source %d,%d; image %d,%d.",
actualID.filename.c_str(), GetTextureWidth(), GetTextureHeight(),
props.c_str(), m_iSourceWidth, m_iSourceHeight,
m_iImageWidth, m_iImageHeight);
}
void RageBitmapTexture::Destroy()
{
DISPLAY->DeleteTexture( m_uTexHandle );
}
/*
* Copyright (c) 2001-2004 Chris Danford, Glenn Maynard
* All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, and/or sell copies of the Software, and to permit persons to
* whom the Software is furnished to do so, provided that the above
* copyright notice(s) and this permission notice appear in all copies of
* the Software and that both the above copyright notice(s) and this
* permission notice appear in supporting documentation.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF
* THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS
* INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT
* OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
* OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
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