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Allow PNG graphics to be used as patches

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Also allows them to be used as sprites.
This commit is contained in:
Jaime Passos 2019-09-11 16:59:28 -03:00
parent 2ced626518
commit aa91627ba2
6 changed files with 160 additions and 33 deletions
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11
src/hardware/hw_cache.c
View file

@ -694,7 +694,7 @@ static void HWR_GenerateTexture(INT32 texnum, GLTexture_t *grtex)
realpatch = W_CacheLumpNumPwad(patch->wad, patch->lump, PU_CACHE);
#ifndef NO_PNG_LUMPS
if (R_IsLumpPNG((UINT8 *)realpatch, lumplength))
realpatch = R_PNGToPatch((UINT8 *)realpatch, lumplength);
realpatch = R_PNGToPatch((UINT8 *)realpatch, lumplength, NULL, false);
#endif
HWR_DrawTexturePatchInCache(&grtex->mipmap,
blockwidth, blockheight,
@ -724,6 +724,13 @@ void HWR_MakePatch (const patch_t *patch, GLPatch_t *grPatch, GLMipmap_t *grMipm
{
INT32 newwidth, newheight;
#ifndef NO_PNG_LUMPS
// lump is a png so convert it
size_t len = W_LumpLengthPwad(grPatch->wadnum, grPatch->lumpnum);
if ((patch != NULL) && R_IsLumpPNG((UINT8 *)patch, len))
patch = R_PNGToPatch((UINT8 *)patch, len, NULL, true);
#endif
// don't do it twice (like a cache)
if (grMipmap->width == 0)
{
@ -926,7 +933,7 @@ static void HWR_LoadPatchFlat(GLMipmap_t *grMipmap, lumpnum_t flatlumpnum)
#ifndef NO_PNG_LUMPS
if (R_IsLumpPNG((UINT8 *)patch, lumplength))
patch = R_PNGToPatch((UINT8 *)patch, lumplength);
patch = R_PNGToPatch((UINT8 *)patch, lumplength, NULL, false);
#endif
grMipmap->width = (UINT16)SHORT(patch->width);

71
src/r_data.c
View file

@ -476,7 +476,7 @@ static UINT8 *R_GenerateTexture(size_t texnum)
#ifndef NO_PNG_LUMPS
if (R_IsLumpPNG((UINT8 *)realpatch, lumplength))
{
realpatch = R_PNGToPatch((UINT8 *)realpatch, lumplength);
realpatch = R_PNGToPatch((UINT8 *)realpatch, lumplength, NULL, false);
goto multipatch;
}
#endif
@ -569,7 +569,7 @@ static UINT8 *R_GenerateTexture(size_t texnum)
realpatch = W_CacheLumpNumPwad(wadnum, lumpnum, PU_CACHE);
#ifndef NO_PNG_LUMPS
if (R_IsLumpPNG((UINT8 *)realpatch, lumplength))
realpatch = R_PNGToPatch((UINT8 *)realpatch, lumplength);
realpatch = R_PNGToPatch((UINT8 *)realpatch, lumplength, NULL, false);
#endif
x1 = patch->originx;
@ -2625,7 +2625,7 @@ static void PNG_warn(png_structp PNG, png_const_charp pngtext)
CONS_Debug(DBG_RENDER, "libpng warning at %p: %s", PNG, pngtext);
}
static png_bytep *PNG_Read(UINT8 *png, UINT16 *w, UINT16 *h, size_t size)
static png_bytep *PNG_Read(UINT8 *png, UINT16 *w, UINT16 *h, INT16 *topoffset, INT16 *leftoffset, size_t size)
{
png_structp png_ptr;
png_infop png_info_ptr;
@ -2683,8 +2683,7 @@ static png_bytep *PNG_Read(UINT8 *png, UINT16 *w, UINT16 *h, size_t size)
png_read_info(png_ptr, png_info_ptr);
png_get_IHDR(png_ptr, png_info_ptr, &width, &height, &bit_depth, &color_type,
NULL, NULL, NULL);
png_get_IHDR(png_ptr, png_info_ptr, &width, &height, &bit_depth, &color_type, NULL, NULL, NULL);
if (bit_depth == 16)
png_set_strip_16(png_ptr);
@ -2712,6 +2711,38 @@ static png_bytep *PNG_Read(UINT8 *png, UINT16 *w, UINT16 *h, size_t size)
for (y = 0; y < height; y++)
row_pointers[y] = (png_byte*)malloc(png_get_rowbytes(png_ptr, png_info_ptr));
png_read_image(png_ptr, row_pointers);
// Read grAB chunk
if (topoffset || leftoffset)
{
UINT8 *header = png;
while (size--)
{
if (!memcmp(header, "grAb", 4))
{
// grAb stores numbers as big-endian.
#ifdef SRB2_BIG_ENDIAN
#define ENDIANESS(x) (x)
#else
#define ENDIANESS(x) ((x>>24)&0xff)|((x<<8)&0xff0000)|((x>>8)&0xff00)|((x<<24)&0xff000000)
#endif
// skip name
header += 4;
// read left offset
if (leftoffset != NULL)
*leftoffset = (INT16)ENDIANESS(*(INT32 *)header);
// read top offset
header += 4;
if (topoffset != NULL)
*topoffset = (INT16)ENDIANESS(*(INT32 *)header);
#undef ENDIANESS
break;
}
header++;
}
}
// bye
png_destroy_read_struct(&png_ptr, &png_info_ptr, NULL);
*w = (INT32)width;
@ -2720,11 +2751,11 @@ static png_bytep *PNG_Read(UINT8 *png, UINT16 *w, UINT16 *h, size_t size)
}
// Convert a PNG to a raw image.
static UINT8 *PNG_RawConvert(UINT8 *png, UINT16 *w, UINT16 *h, size_t size)
static UINT8 *PNG_RawConvert(UINT8 *png, UINT16 *w, UINT16 *h, INT16 *topoffset, INT16 *leftoffset, size_t size)
{
UINT8 *flat;
png_uint_32 x, y;
png_bytep *row_pointers = PNG_Read(png, w, h, size);
png_bytep *row_pointers = PNG_Read(png, w, h, topoffset, leftoffset, size);
png_uint_32 width = *w, height = *h;
if (!row_pointers)
@ -2751,15 +2782,16 @@ static UINT8 *PNG_RawConvert(UINT8 *png, UINT16 *w, UINT16 *h, size_t size)
// Convert a PNG to a flat.
UINT8 *R_PNGToFlat(levelflat_t *levelflat, UINT8 *png, size_t size)
{
return PNG_RawConvert(png, &levelflat->width, &levelflat->height, size);
return PNG_RawConvert(png, &levelflat->width, &levelflat->height, NULL, NULL, size);
}
// Convert a PNG to a patch.
static unsigned char imgbuf[1<<26];
patch_t *R_PNGToPatch(UINT8 *png, size_t size)
patch_t *R_PNGToPatch(UINT8 *png, size_t size, size_t *destsize, boolean translucency)
{
UINT16 width, height;
UINT8 *raw = PNG_RawConvert(png, &width, &height, size);
INT16 topoffset = 0, leftoffset = 0;
UINT8 *raw = PNG_RawConvert(png, &width, &height, &topoffset, &leftoffset, size);
UINT32 x, y;
UINT8 *img;
@ -2776,9 +2808,8 @@ patch_t *R_PNGToPatch(UINT8 *png, size_t size)
// Write image size and offset
WRITE16(imgptr, width);
WRITE16(imgptr, height);
// no offsets
WRITE16(imgptr, 0);
WRITE16(imgptr, 0);
WRITE16(imgptr, leftoffset);
WRITE16(imgptr, topoffset);
// Leave placeholder to column pointers
colpointers = imgptr;
@ -2799,6 +2830,16 @@ patch_t *R_PNGToPatch(UINT8 *png, size_t size)
for (y = 0; y < height; y++)
{
UINT8 paletteIndex = raw[((y * width) + x)];
boolean opaque = translucency ? (paletteIndex != TRANSPARENTPIXEL) : true;
// End span if we have a transparent pixel
if (!opaque)
{
if (startofspan)
WRITE8(imgptr, 0);
startofspan = NULL;
continue;
}
// Start new column if we need to
if (!startofspan || spanSize == 255)
@ -2857,11 +2898,13 @@ patch_t *R_PNGToPatch(UINT8 *png, size_t size)
#undef WRITE32
size = imgptr-imgbuf;
img = malloc(size);
img = Z_Malloc(size, PU_STATIC, NULL);
memcpy(img, imgbuf, size);
Z_Free(raw);
if (destsize != NULL)
*destsize = size;
return (patch_t *)img;
}

2
src/r_data.h
View file

@ -168,7 +168,7 @@ void R_TextureToFlat(size_t tex, UINT8 *flat);
boolean R_IsLumpPNG(UINT8 *d, size_t s);
UINT8 *R_PNGToFlat(levelflat_t *levelflat, UINT8 *png, size_t size);
patch_t *R_PNGToPatch(UINT8 *png, size_t size);
patch_t *R_PNGToPatch(UINT8 *png, size_t size, size_t *destsize, boolean transparency);
boolean R_PNGDimensions(UINT8 *png, INT16 *width, INT16 *height, size_t size);
#endif

17
src/r_things.c
View file

@ -254,6 +254,19 @@ static boolean R_AddSingleSpriteDef(const char *sprname, spritedef_t *spritedef,
// store sprite info in lookup tables
//FIXME : numspritelumps do not duplicate sprite replacements
W_ReadLumpHeaderPwad(wadnum, l, &patch, sizeof (patch_t), 0);
#ifndef NO_PNG_LUMPS
{
patch_t *png = W_CacheLumpNumPwad(wadnum, l, PU_STATIC);
size_t len = W_LumpLengthPwad(wadnum, l);
// lump is a png so convert it
if (R_IsLumpPNG((UINT8 *)png, len))
{
png = R_PNGToPatch((UINT8 *)png, len, NULL, true);
M_Memcpy(&patch, png, sizeof(INT16)*4);
}
Z_Free(png);
}
#endif
spritecachedinfo[numspritelumps].width = SHORT(patch.width)<<FRACBITS;
spritecachedinfo[numspritelumps].offset = SHORT(patch.leftoffset)<<FRACBITS;
spritecachedinfo[numspritelumps].topoffset = SHORT(patch.topoffset)<<FRACBITS;
@ -701,7 +714,7 @@ static void R_DrawVisSprite(vissprite_t *vis)
INT32 texturecolumn;
#endif
fixed_t frac;
patch_t *patch = W_CacheLumpNum(vis->patch, PU_CACHE);
patch_t *patch = W_CachePatchNum(vis->patch, PU_CACHE);
fixed_t this_scale = vis->mobj->scale;
INT32 x1, x2;
INT64 overflow_test;
@ -870,7 +883,7 @@ static void R_DrawPrecipitationVisSprite(vissprite_t *vis)
INT64 overflow_test;
//Fab : R_InitSprites now sets a wad lump number
patch = W_CacheLumpNum(vis->patch, PU_CACHE);
patch = W_CachePatchNum(vis->patch, PU_CACHE);
if (!patch)
return;

83
src/w_wad.c
View file

@ -789,6 +789,7 @@ UINT16 W_InitFile(const char *filename, boolean mainfile)
// set up caching
//
Z_Calloc(numlumps * sizeof (*wadfile->lumpcache), PU_STATIC, &wadfile->lumpcache);
Z_Calloc(numlumps * sizeof (*wadfile->patchcache), PU_STATIC, &wadfile->patchcache);
#ifdef HWRENDER
// allocates GLPatch info structures and store them in a tree
@ -1457,6 +1458,38 @@ boolean W_IsLumpCached(lumpnum_t lumpnum, void *ptr)
return W_IsLumpCachedPWAD(WADFILENUM(lumpnum),LUMPNUM(lumpnum), ptr);
}
//
// W_IsPatchCached
//
// If a patch is already cached return true, otherwise
// return false.
//
// no outside code uses the PWAD form, for now
static inline boolean W_IsPatchCachedPWAD(UINT16 wad, UINT16 lump, void *ptr)
{
void *lcache;
if (!TestValidLump(wad, lump))
return false;
lcache = wadfiles[wad]->patchcache[lump];
if (ptr)
{
if (ptr == lcache)
return true;
}
else if (lcache)
return true;
return false;
}
boolean W_IsPatchCached(lumpnum_t lumpnum, void *ptr)
{
return W_IsPatchCachedPWAD(WADFILENUM(lumpnum),LUMPNUM(lumpnum), ptr);
}
// ==========================================================================
// W_CacheLumpName
// ==========================================================================
@ -1480,18 +1513,53 @@ void *W_CacheLumpName(const char *name, INT32 tag)
// Cache a patch into heap memory, convert the patch format as necessary
//
// Software-only compile cache the data without conversion
#ifdef HWRENDER
static inline void *W_CachePatchNumPwad(UINT16 wad, UINT16 lump, INT32 tag)
void *W_CachePatchNumPwad(UINT16 wad, UINT16 lump, INT32 tag)
{
#ifdef HWRENDER
GLPatch_t *grPatch;
if (rendermode == render_soft || rendermode == render_none)
return W_CacheLumpNumPwad(wad, lump, tag);
#endif
if (!TestValidLump(wad, lump))
return NULL;
#ifdef HWRENDER
// Software-only compile cache the data without conversion
if (rendermode == render_soft || rendermode == render_none)
{
#endif
lumpcache_t *lumpcache = wadfiles[wad]->patchcache;
if (!lumpcache[lump])
{
size_t len = W_LumpLengthPwad(wad, lump);
void *ptr, *lumpdata, *srcdata = NULL;
ptr = Z_Malloc(len, tag, &lumpcache[lump]);
lumpdata = Z_Malloc(len, tag, NULL);
// read the lump in full
W_ReadLumpHeaderPwad(wad, lump, lumpdata, 0, 0);
#ifndef NO_PNG_LUMPS
// lump is a png so convert it
if (R_IsLumpPNG((UINT8 *)lumpdata, len))
{
size_t newlen;
srcdata = R_PNGToPatch((UINT8 *)lumpdata, len, &newlen, true);
ptr = Z_Realloc(ptr, newlen, tag, &lumpcache[lump]);
M_Memcpy(ptr, srcdata, newlen);
Z_Free(srcdata);
}
else // just copy it into the patch cache
#endif
M_Memcpy(ptr, lumpdata, len);
}
else
Z_ChangeTag(lumpcache[lump], tag);
return lumpcache[lump];
#ifdef HWRENDER
}
grPatch = HWR_GetCachedGLPatchPwad(wad, lump);
if (grPatch->mipmap.grInfo.data)
@ -1515,6 +1583,7 @@ static inline void *W_CachePatchNumPwad(UINT16 wad, UINT16 lump, INT32 tag)
// return GLPatch_t, which can be casted to (patch_t) with valid patch header info
return (void *)grPatch;
#endif
}
void *W_CachePatchNum(lumpnum_t lumpnum, INT32 tag)
@ -1522,8 +1591,6 @@ void *W_CachePatchNum(lumpnum_t lumpnum, INT32 tag)
return W_CachePatchNumPwad(WADFILENUM(lumpnum),LUMPNUM(lumpnum),tag);
}
#endif // HWRENDER
void W_UnlockCachedPatch(void *patch)
{
// The hardware code does its own memory management, as its patches

9
src/w_wad.h
View file

@ -102,6 +102,7 @@ typedef struct wadfile_s
restype_t type;
lumpinfo_t *lumpinfo;
lumpcache_t *lumpcache;
lumpcache_t *patchcache;
#ifdef HWRENDER
aatree_t *hwrcache; // patches are cached in renderer's native format
#endif
@ -167,17 +168,13 @@ void *W_CacheLumpNum(lumpnum_t lump, INT32 tag);
void *W_CacheLumpNumForce(lumpnum_t lumpnum, INT32 tag);
boolean W_IsLumpCached(lumpnum_t lump, void *ptr);
boolean W_IsPatchCached(lumpnum_t lump, void *ptr);
void *W_CacheLumpName(const char *name, INT32 tag);
void *W_CachePatchName(const char *name, INT32 tag);
#ifdef HWRENDER
//void *W_CachePatchNumPwad(UINT16 wad, UINT16 lump, INT32 tag); // return a patch_t
void *W_CachePatchNumPwad(UINT16 wad, UINT16 lump, INT32 tag); // return a patch_t
void *W_CachePatchNum(lumpnum_t lumpnum, INT32 tag); // return a patch_t
#else
//#define W_CachePatchNumPwad(wad, lump, tag) W_CacheLumpNumPwad(wad, lump, tag)
#define W_CachePatchNum(lumpnum, tag) W_CacheLumpNum(lumpnum, tag)
#endif
void W_UnlockCachedPatch(void *patch);