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Improve bitmap caching performance. 

(cherry picked from commit ccc29e9776)
This commit is contained in:
Alex Shvartzkop 2023-10-24 01:27:53 +03:00
parent 05912b0381
commit 75c758e5f4
1 changed files with 51 additions and 20 deletions
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71
common/gal/opengl/opengl_gal.cpp
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@ -182,32 +182,63 @@ GLuint GL_BITMAP_CACHE::cacheBitmap( const BITMAP_BASE* aBitmap )
m_freedTextureIds.pop_front();
}
bmp.size = bmp.w * bmp.h * 4;
auto buf = std::make_unique<uint8_t[]>( bmp.size );
for( int y = 0; y < bmp.h; y++ )
if( imgData.HasAlpha() || imgData.HasMask() )
{
for( int x = 0; x < bmp.w; x++ )
bmp.size = bmp.w * bmp.h * 4;
auto buf = std::make_unique<uint8_t[]>( bmp.size );
uint8_t* dstP = buf.get();
uint8_t* srcP = imgData.GetData();
long long pxCount = static_cast<long long>( bmp.w ) * bmp.h;
if( imgData.HasAlpha() )
{
uint8_t* p = buf.get() + ( bmp.w * y + x ) * 4;
uint8_t* srcAlpha = imgData.GetAlpha();
p[0] = imgData.GetRed( x, y );
p[1] = imgData.GetGreen( x, y );
p[2] = imgData.GetBlue( x, y );
for( long long px = 0; px < pxCount; px++ )
{
memcpy( dstP, srcP, 3 );
dstP[3] = *srcAlpha;
if( imgData.HasAlpha() )
p[3] = imgData.GetAlpha( x, y );
else if( imgData.HasMask() && p[0] == imgData.GetMaskRed()
&& p[1] == imgData.GetMaskGreen() && p[2] == imgData.GetMaskBlue() )
p[3] = wxALPHA_TRANSPARENT;
else
p[3] = wxALPHA_OPAQUE;
srcAlpha += 1;
srcP += 3;
dstP += 4;
}
}
}
else if( imgData.HasMask() )
{
uint8_t maskRed = imgData.GetMaskRed();
uint8_t maskGreen = imgData.GetMaskGreen();
uint8_t maskBlue = imgData.GetMaskBlue();
glBindTexture( GL_TEXTURE_2D, textureID );
glTexImage2D( GL_TEXTURE_2D, 0, GL_RGBA8, bmp.w, bmp.h, 0, GL_RGBA, GL_UNSIGNED_BYTE,
buf.get() );
for( long long px = 0; px < pxCount; px++ )
{
memcpy( dstP, srcP, 3 );
if( dstP[0] == maskRed && dstP[1] == maskGreen && dstP[2] == maskBlue )
dstP[3] = wxALPHA_TRANSPARENT;
else
dstP[3] = wxALPHA_OPAQUE;
srcP += 3;
dstP += 4;
}
}
glBindTexture( GL_TEXTURE_2D, textureID );
glTexImage2D( GL_TEXTURE_2D, 0, GL_RGBA8, bmp.w, bmp.h, 0, GL_RGBA, GL_UNSIGNED_BYTE,
buf.get() );
}
else
{
bmp.size = bmp.w * bmp.h * 3;
uint8_t* srcP = imgData.GetData();
glBindTexture( GL_TEXTURE_2D, textureID );
glTexImage2D( GL_TEXTURE_2D, 0, GL_RGB8, bmp.w, bmp.h, 0, GL_RGB, GL_UNSIGNED_BYTE, srcP );
}
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST );