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- updated m_png.cpp from GZDoom.

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This commit is contained in:
Christoph Oelckers 2019-11-02 12:07:15 +01:00
parent 1d7bfe14dc
commit edcfad6e11
1 changed files with 20 additions and 9 deletions
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29
source/common/utility/m_png.cpp
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@ -102,9 +102,6 @@ static void UnpackPixels (int width, int bytesPerRow, int bitdepth, const uint8_
// PUBLIC DATA DEFINITIONS -------------------------------------------------
int png_level = 5;
int png_gamma = 0;
/*
CUSTOM_CVAR(Int, png_level, 5, CVAR_ARCHIVE|CVAR_GLOBALCONFIG)
{
if (self < 0)
@ -113,7 +110,7 @@ CUSTOM_CVAR(Int, png_level, 5, CVAR_ARCHIVE|CVAR_GLOBALCONFIG)
self = 9;
}
CVAR(Float, png_gamma, 0.f, CVAR_ARCHIVE|CVAR_GLOBALCONFIG)
*/
// PRIVATE DATA DEFINITIONS ------------------------------------------------
// CODE --------------------------------------------------------------------
@ -763,7 +760,7 @@ uint32_t CalcSum(Byte *row, int len)
//==========================================================================
#if USE_FILTER_HEURISTIC
static int SelectFilter(Byte row[5][1 + MAXWIDTH*3], Byte prior[MAXWIDTH*3], int width)
static int SelectFilter(Byte **row, Byte *prior, int width)
{
// As it turns out, it seems no filtering is the best for Doom screenshots,
// no matter what the heuristic might determine.
@ -898,13 +895,27 @@ static int SelectFilter(Byte row[5][1 + MAXWIDTH*3], Byte prior[MAXWIDTH*3], int
bool M_SaveBitmap(const uint8_t *from, ESSType color_type, int width, int height, int pitch, FileWriter *file)
{
#define MAXWIDTH 2048
TArray<Byte> temprow_storage;
#if USE_FILTER_HEURISTIC
Byte prior[MAXWIDTH*3];
Byte temprow[5][1 + MAXWIDTH*3];
static const unsigned temprow_count = 5;
TArray<Byte> prior_storage(width * 3, true);
Byte *prior = &prior_storage[0];
#else
Byte temprow[1][1 + MAXWIDTH*3];
static const unsigned temprow_count = 1;
#endif
const unsigned temprow_size = 1 + width * 3;
temprow_storage.Resize(temprow_size * temprow_count);
Byte* temprow[temprow_count];
for (unsigned i = 0; i < temprow_count; ++i)
{
temprow[i] = &temprow_storage[temprow_size * i];
}
Byte buffer[PNG_WRITE_SIZE];
z_stream stream;
int err;