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160 lines
3.7 KiB
C
160 lines
3.7 KiB
C
// SONIC ROBO BLAST 2
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//-----------------------------------------------------------------------------
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// Copyright (C) 2020-2023 by Jaime "Lactozilla" Passos.
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//
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// This program is free software distributed under the
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// terms of the GNU General Public License, version 2.
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// See the 'LICENSE' file for more details.
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//-----------------------------------------------------------------------------
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/// \file r_patch.c
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/// \brief Patch generation.
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#include "doomdef.h"
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#include "r_patch.h"
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#include "r_picformats.h"
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#include "r_defs.h"
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#include "z_zone.h"
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#ifdef HWRENDER
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#include "hardware/hw_glob.h"
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#endif
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//
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// Creates a patch.
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// Assumes a PU_PATCH zone memory tag and no user, but can always be set later
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//
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patch_t *Patch_Create(softwarepatch_t *source, size_t srcsize, void *dest)
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{
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patch_t *patch = (dest == NULL) ? Z_Calloc(sizeof(patch_t), PU_PATCH, NULL) : (patch_t *)(dest);
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if (source)
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{
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INT32 col, colsize;
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size_t size = sizeof(INT32) * SHORT(source->width);
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size_t offs = (sizeof(INT16) * 4) + size;
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patch->width = SHORT(source->width);
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patch->height = SHORT(source->height);
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patch->leftoffset = SHORT(source->leftoffset);
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patch->topoffset = SHORT(source->topoffset);
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patch->columnofs = Z_Calloc(size, PU_PATCH_DATA, NULL);
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for (col = 0; col < source->width; col++)
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{
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// This makes the column offsets relative to the column data itself,
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// instead of the entire patch data
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patch->columnofs[col] = LONG(source->columnofs[col]) - offs;
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}
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if (!srcsize)
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I_Error("Patch_Create: no source size!");
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colsize = (INT32)(srcsize) - (INT32)offs;
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if (colsize <= 0)
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I_Error("Patch_Create: no column data!");
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patch->columns = Z_Calloc(colsize, PU_PATCH_DATA, NULL);
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M_Memcpy(patch->columns, ((UINT8 *)source + LONG(source->columnofs[0])), colsize);
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}
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return patch;
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}
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//
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// Frees a patch from memory.
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//
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static void Patch_FreeData(patch_t *patch)
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{
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INT32 i;
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#ifdef HWRENDER
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if (patch->hardware)
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HWR_FreeTexture(patch);
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#endif
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for (i = 0; i < 4; i++)
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{
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if (patch->flats[i])
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Z_Free(patch->flats[i]);
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}
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#ifdef ROTSPRITE
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if (patch->rotated)
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{
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rotsprite_t *rotsprite = patch->rotated;
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for (i = 0; i < rotsprite->angles; i++)
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{
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if (rotsprite->patches[i])
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Patch_Free(rotsprite->patches[i]);
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}
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Z_Free(rotsprite->patches);
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Z_Free(rotsprite);
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}
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#endif
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if (patch->columnofs)
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Z_Free(patch->columnofs);
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if (patch->columns)
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Z_Free(patch->columns);
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}
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void Patch_Free(patch_t *patch)
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{
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Patch_FreeData(patch);
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Z_Free(patch);
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}
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//
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// Frees patches with a tag range.
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//
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static boolean Patch_FreeTagsCallback(void *mem)
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{
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patch_t *patch = (patch_t *)mem;
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Patch_FreeData(patch);
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return true;
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}
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void Patch_FreeTags(INT32 lowtag, INT32 hightag)
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{
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Z_IterateTags(lowtag, hightag, Patch_FreeTagsCallback);
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}
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void Patch_GenerateFlat(patch_t *patch, pictureflags_t flags)
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{
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UINT8 flip = (flags & (PICFLAGS_XFLIP | PICFLAGS_YFLIP));
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if (patch->flats[flip] == NULL)
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patch->flats[flip] = Picture_Convert(PICFMT_PATCH, patch, PICFMT_FLAT16, 0, NULL, 0, 0, 0, 0, flags);
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}
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#ifdef HWRENDER
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//
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// Allocates a hardware patch.
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//
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void *Patch_AllocateHardwarePatch(patch_t *patch)
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{
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if (!patch->hardware)
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{
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GLPatch_t *grPatch = Z_Calloc(sizeof(GLPatch_t), PU_HWRPATCHINFO, &patch->hardware);
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grPatch->mipmap = Z_Calloc(sizeof(GLMipmap_t), PU_HWRPATCHINFO, &grPatch->mipmap);
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}
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return (void *)(patch->hardware);
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}
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//
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// Creates a hardware patch.
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//
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void *Patch_CreateGL(patch_t *patch)
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{
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GLPatch_t *grPatch = (GLPatch_t *)Patch_AllocateHardwarePatch(patch);
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if (!grPatch->mipmap->data) // Run HWR_MakePatch in all cases, to recalculate some things
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HWR_MakePatch(patch, grPatch, grPatch->mipmap, false);
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return grPatch;
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}
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#endif // HWRENDER
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