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tga file load speed improvement

This commit is contained in:
Mark Vejvoda 2013-06-12 07:21:16 +00:00
parent 80f25e8fff
commit cc4d650fad
1 changed files with 45 additions and 22 deletions
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67
source/shared_lib/sources/graphics/TGAReader.cpp
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@ -254,11 +254,12 @@ Pixmap2D* TGAReader::read(ifstream& in, const string& path, Pixmap2D* ret) const
//std::cout << "TGA-Components: Pic: " << picComponents << " old: " << (ret->getComponents()) << " File: " << fileComponents << std::endl;
ret->init(w,h,picComponents);
uint8* pixels = ret->getPixels();
//read file
for(int i=0; i<h*w*picComponents; i+=picComponents){
for(int i = 0; i < h*w*picComponents; i += picComponents) {
uint8 r=0, g=0, b=0, a=0, l=0;
if(fileComponents==1){
if(fileComponents == 1) {
in.read((char*)&l,1);
if(bigEndianSystem == true) {
l = Shared::PlatformByteOrder::fromCommonEndian(l);
@ -269,38 +270,60 @@ Pixmap2D* TGAReader::read(ifstream& in, const string& path, Pixmap2D* ret) const
b= l;
a= 255;
}
else{
in.read((char*)&b, 1);
else {
uint8 bgra[4] = {0,0,0,0};
in.read((char*)&bgra[0], fileComponents);
b = bgra[0];
g = bgra[1];
r = bgra[2];
a= 255;
if(fileComponents == 4) {
a = bgra[3];
}
if(bigEndianSystem == true) {
b = Shared::PlatformByteOrder::fromCommonEndian(b);
}
in.read((char*)&g, 1);
if(bigEndianSystem == true) {
g = Shared::PlatformByteOrder::fromCommonEndian(g);
}
in.read((char*)&r, 1);
if(bigEndianSystem == true) {
r = Shared::PlatformByteOrder::fromCommonEndian(r);
}
if(fileComponents==4){
in.read((char*)&a, 1);
if(bigEndianSystem == true) {
if(fileComponents == 4) {
a = Shared::PlatformByteOrder::fromCommonEndian(a);
}
} else {
a= 255;
}
l= (r+g+b)/3;
// in.read((char*)&b, 1);
// if(bigEndianSystem == true) {
// b = Shared::PlatformByteOrder::fromCommonEndian(b);
// }
//
// in.read((char*)&g, 1);
// if(bigEndianSystem == true) {
// g = Shared::PlatformByteOrder::fromCommonEndian(g);
// }
//
// in.read((char*)&r, 1);
// if(bigEndianSystem == true) {
// r = Shared::PlatformByteOrder::fromCommonEndian(r);
// }
//
// if(fileComponents==4){
// in.read((char*)&a, 1);
// if(bigEndianSystem == true) {
// a = Shared::PlatformByteOrder::fromCommonEndian(a);
// }
//
// }
// else {
// a= 255;
// }
l = (r+g+b) / 3;
}
if (!in.good()) {
return NULL;
}
switch(picComponents){
switch(picComponents) {
case 1:
pixels[i]= l;
break;