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Avoid using unnecessary buffers in psxBackgroundToIndexed

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svn-id: r39072
This commit is contained in:
Fabio Battaglia 2009-03-02 11:30:23 +00:00
parent 0233202150
commit ed65593bb3
1 changed files with 5 additions and 15 deletions
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20
engines/sword1/screen.cpp
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@ -842,7 +842,7 @@ uint8* Screen::psxBackgroundToIndexed(uint8 *psxBackground, uint32 bakXres, uint
uint32 tag = READ_LE_UINT32(psxBackground);
uint8 *decomp_tile = (uint8 *)malloc(16 * 16); //Tiles are always 16 * 16
uint8 *halfres_buffer = (uint8 *)malloc(totTiles * 16 * 16); //This buffer will contain the half vertical res image
uint8 *fullres_buffer = (uint8 *)malloc(bakXres * yresInTiles * 32);
bool isCompressed = (tag == 0x434F4D50);
@ -861,25 +861,15 @@ uint8* Screen::psxBackgroundToIndexed(uint8 *psxBackground, uint32 bakXres, uint
tileXpos = 0;
}
for (byte tileLine=0; tileLine<16; tileLine++)
memcpy(halfres_buffer + tileLine * bakXres + tileXpos * 16 + tileYpos * bakXres * 16, decomp_tile + tileLine * 16, 16); //Copy data to destination buffer
for (byte tileLine=0; tileLine<16; tileLine++) { // Copy data to destination buffer
memcpy(fullres_buffer + tileLine * bakXres * 2 + tileXpos * 16 + tileYpos * bakXres * 16 * 2, decomp_tile + tileLine * 16, 16);
memcpy(fullres_buffer + tileLine * bakXres * 2 + bakXres + tileXpos * 16 + tileYpos * bakXres * 16 * 2, decomp_tile + tileLine * 16, 16);
}
tileXpos++;
}
free(decomp_tile);
uint8 *fullres_buffer = (uint8 *)malloc(bakXres * yresInTiles * 32);
memset(fullres_buffer, 0x00, bakXres * yresInTiles * 32);
//Let's linedouble the image (to keep correct aspect ratio)
for (uint32 currentLine = 0; currentLine < (bakYres/2); currentLine++) {
memcpy(fullres_buffer + currentLine * bakXres * 2, halfres_buffer + currentLine * bakXres, bakXres); // destination_line is 2*original_line
memcpy(fullres_buffer + currentLine * bakXres * 2 + bakXres, halfres_buffer + currentLine * bakXres, bakXres); // destination_line+1
}
free(halfres_buffer);
return fullres_buffer;
}