OrdinaryMagician/vkdoom_m
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- Completely removed code for the PNG filter heuristic from the compiled code when it's been disabled.

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- Added a temporary cvar called pal to play with the offset used by D3DFB::SetPaletteTexture().

SVN r701 (trunk)
This commit is contained in:
Randy Heit 2008-01-12 17:06:38 +00:00
commit cb47b3a1f7
2 changed files with 27 additions and 16 deletions
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25
src/m_png.cpp
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@ -55,6 +55,12 @@
// size of the compression buffer it allocates on the stack.
#define PNG_WRITE_SIZE 32768
// Set this to 1 to use a simple heuristic to select the filter to apply
// for each row of RGB image saves. As it turns out, it seems no filtering
// is the best for Doom screenshots, no matter what the heuristic might
// determine, so that's why this is 0 here.
#define USE_FILTER_HEURISTIC 0
// TYPES -------------------------------------------------------------------
struct IHDR
@ -759,13 +765,12 @@ DWORD CalcSum(Byte *row, int len)
//
//==========================================================================
#if USE_FILTER_HEURISTIC
static int SelectFilter(Byte row[5][1 + MAXWIDTH*3], Byte prior[MAXWIDTH*3], int width)
{
#if 1
// As it turns out, it seems no filtering is the best for Doom screenshots,
// no matter what the heuristic might determine.
return 0;
#else
DWORD sum;
DWORD bestsum;
int bestfilter;
@ -880,8 +885,10 @@ static int SelectFilter(Byte row[5][1 + MAXWIDTH*3], Byte prior[MAXWIDTH*3], int
}
return bestfilter;
#endif
}
#else
#define SelectFilter(x,y,z) 0
#endif
//==========================================================================
//
@ -894,9 +901,13 @@ static int SelectFilter(Byte row[5][1 + MAXWIDTH*3], Byte prior[MAXWIDTH*3], int
bool M_SaveBitmap(const BYTE *from, ESSType color_type, int width, int height, int pitch, FILE *file)
{
#if USE_FILTER_HEURISTIC
Byte prior[MAXWIDTH*3];
Byte buffer[PNG_WRITE_SIZE];
Byte temprow[5][1 + MAXWIDTH*3];
#else
Byte temprow[1][1 + MAXWIDTH*3];
#endif
Byte buffer[PNG_WRITE_SIZE];
z_stream stream;
int err;
int y;
@ -917,17 +928,19 @@ bool M_SaveBitmap(const BYTE *from, ESSType color_type, int width, int height, i
stream.avail_out = sizeof(buffer);
temprow[0][0] = 0;
#if USE_FILTER_HEURISTIC
temprow[1][0] = 1;
temprow[2][0] = 2;
temprow[3][0] = 3;
temprow[4][0] = 4;
// Fill the prior row to 0 for RGB images. Paletted is always filter 0,
// Fill the prior row with 0 for RGB images. Paletted is always filter 0,
// so it doesn't need this.
if (color_type != SS_PAL)
{
memset(prior, 0, width * 3);
}
#endif
while (y-- > 0 && err == Z_OK)
{
@ -957,11 +970,13 @@ bool M_SaveBitmap(const BYTE *from, ESSType color_type, int width, int height, i
stream.avail_in = width * 3 + 1;
break;
}
#if USE_FILTER_HEURISTIC
if (color_type != SS_PAL)
{
// Save this row for filter calculations on the next row.
memcpy (prior, &temprow[0][1], stream.avail_in - 1);
}
#endif
from += pitch;