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Fix transparent PNG conversion

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This commit is contained in:
Jaime Passos 2020-01-01 17:28:22 -03:00
parent 98b7d8aaca
commit 401c35b407
3 changed files with 67 additions and 27 deletions
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61
src/r_patch.c
View file

@ -250,6 +250,9 @@ patch_t *R_FlatToPatch(UINT8 *raw, UINT16 width, UINT16 height, UINT16 leftoffse
UINT8 *colpointers, *startofspan;
size_t size = 0;
if (!raw)
return NULL;
// Write image size and offset
WRITEINT16(imgptr, width);
WRITEINT16(imgptr, height);
@ -353,12 +356,13 @@ patch_t *R_FlatToPatch(UINT8 *raw, UINT16 width, UINT16 height, UINT16 leftoffse
//
// Convert a 16-bit flat to a patch.
//
patch_t *R_FlatToPatch_16bpp(UINT16 *raw, UINT16 width, UINT16 height, size_t *size)
patch_t *R_FlatToPatch_16bpp(UINT16 *raw, UINT16 width, UINT16 height, UINT16 leftoffset, UINT16 topoffset, size_t *destsize)
{
UINT32 x, y;
UINT8 *img;
UINT8 *imgptr = imgbuf;
UINT8 *colpointers, *startofspan;
size_t size = 0;
if (!raw)
return NULL;
@ -366,9 +370,8 @@ patch_t *R_FlatToPatch_16bpp(UINT16 *raw, UINT16 width, UINT16 height, size_t *s
// Write image size and offset
WRITEINT16(imgptr, width);
WRITEINT16(imgptr, height);
// no offsets
WRITEINT16(imgptr, 0);
WRITEINT16(imgptr, 0);
WRITEINT16(imgptr, leftoffset);
WRITEINT16(imgptr, topoffset);
// Leave placeholder to column pointers
colpointers = imgptr;
@ -452,9 +455,12 @@ patch_t *R_FlatToPatch_16bpp(UINT16 *raw, UINT16 width, UINT16 height, size_t *s
WRITEUINT8(imgptr, 0xFF);
}
*size = imgptr-imgbuf;
img = Z_Malloc(*size, PU_STATIC, NULL);
memcpy(img, imgbuf, *size);
size = imgptr-imgbuf;
img = Z_Malloc(size, PU_STATIC, NULL);
memcpy(img, imgbuf, size);
if (destsize != NULL)
*destsize = size;
return (patch_t *)img;
}
@ -677,6 +683,41 @@ static UINT8 *PNG_RawConvert(const UINT8 *png, UINT16 *w, UINT16 *h, INT16 *topo
return flat;
}
// Convert a PNG with transparency to a raw image.
static UINT16 *PNG_RawConvert_16bpp(const UINT8 *png, UINT16 *w, UINT16 *h, INT16 *topoffset, INT16 *leftoffset, size_t size)
{
UINT16 *flat;
png_uint_32 x, y;
png_bytep *row_pointers = PNG_Read(png, w, h, topoffset, leftoffset, size);
png_uint_32 width = *w, height = *h;
size_t flatsize, i;
if (!row_pointers)
I_Error("PNG_RawConvert_16bpp: conversion failed");
// Convert the image to 16bpp
flatsize = (width * height);
flat = Z_Malloc(flatsize * sizeof(UINT16), PU_LEVEL, NULL);
// can't memset here
for (i = 0; i < flatsize; i++)
flat[i] = 0xFF00;
for (y = 0; y < height; y++)
{
png_bytep row = row_pointers[y];
for (x = 0; x < width; x++)
{
png_bytep px = &(row[x * 4]);
if ((UINT8)px[3])
flat[((y * width) + x)] = NearestColor((UINT8)px[0], (UINT8)px[1], (UINT8)px[2]);
}
}
free(row_pointers);
return flat;
}
//
// R_PNGToFlat
//
@ -696,12 +737,12 @@ patch_t *R_PNGToPatch(const UINT8 *png, size_t size, size_t *destsize, boolean t
{
UINT16 width, height;
INT16 topoffset = 0, leftoffset = 0;
UINT8 *raw = PNG_RawConvert(png, &width, &height, &topoffset, &leftoffset, size);
UINT16 *raw = PNG_RawConvert_16bpp(png, &width, &height, &topoffset, &leftoffset, size);
if (!raw)
I_Error("R_PNGToPatch: conversion failed");
return R_FlatToPatch(raw, width, height, leftoffset, topoffset, destsize, transparency);
return R_FlatToPatch_16bpp(raw, width, height, leftoffset, topoffset, destsize);
}
//
@ -1264,7 +1305,7 @@ void R_CacheRotSprite(spritenum_t sprnum, UINT8 frame, spriteinfo_t *sprinfo, sp
}
// make patch
newpatch = R_FlatToPatch_16bpp(rawdst, newwidth, newheight, &size);
newpatch = R_FlatToPatch_16bpp(rawdst, newwidth, newheight, 0, 0, &size);
{
newpatch->leftoffset = (newpatch->width / 2) + (leftoffset - px);
newpatch->topoffset = (newpatch->height / 2) + (patch->topoffset - py);

2
src/r_patch.h
View file

@ -47,7 +47,7 @@ void R_TextureToFlat(size_t tex, UINT8 *flat);
void R_PatchToFlat(patch_t *patch, UINT8 *flat);
void R_PatchToFlat_16bpp(patch_t *patch, UINT16 *raw, boolean flip);
patch_t *R_FlatToPatch(UINT8 *raw, UINT16 width, UINT16 height, UINT16 leftoffset, UINT16 topoffset, size_t *destsize, boolean transparency);
patch_t *R_FlatToPatch_16bpp(UINT16 *raw, UINT16 width, UINT16 height, size_t *size);
patch_t *R_FlatToPatch_16bpp(UINT16 *raw, UINT16 width, UINT16 height, UINT16 leftoffset, UINT16 topoffset, size_t *destsize);
// Portable Network Graphics
boolean R_IsLumpPNG(const UINT8 *d, size_t s);

31
src/w_wad.c
View file

@ -1465,6 +1465,21 @@ boolean W_IsPatchCached(lumpnum_t lumpnum, void *ptr)
return W_IsPatchCachedPWAD(WADFILENUM(lumpnum),LUMPNUM(lumpnum), ptr);
}
void W_FlushCachedPatches(void)
{
if (needpatchflush)
{
Z_FreeTag(PU_CACHE);
Z_FreeTag(PU_PATCH);
Z_FreeTag(PU_HUDGFX);
Z_FreeTag(PU_HWRPATCHINFO);
Z_FreeTag(PU_HWRMODELTEXTURE);
Z_FreeTag(PU_HWRCACHE);
Z_FreeTags(PU_HWRCACHE_UNLOCKED, PU_HWRPATCHINFO_UNLOCKED);
}
needpatchflush = false;
}
// ==========================================================================
// W_CacheLumpName
// ==========================================================================
@ -1488,22 +1503,6 @@ void *W_CacheLumpName(const char *name, INT32 tag)
// Cache a patch into heap memory, convert the patch format as necessary
//
void W_FlushCachedPatches(void)
{
if (needpatchflush)
{
Z_FreeTag(PU_CACHE);
Z_FreeTag(PU_PATCH);
Z_FreeTag(PU_HUDGFX);
Z_FreeTag(PU_HWRPATCHINFO);
Z_FreeTag(PU_HWRMODELTEXTURE);
Z_FreeTag(PU_HWRCACHE);
Z_FreeTags(PU_HWRCACHE_UNLOCKED, PU_HWRPATCHINFO_UNLOCKED);
}
needpatchflush = false;
}
// Software-only compile cache the data without conversion
void *W_CachePatchNumPwad(UINT16 wad, UINT16 lump, INT32 tag)
{
#ifdef HWRENDER