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88 lines
3.4 KiB
C
88 lines
3.4 KiB
C
// Assembly-language function wrappers for a.asm functions
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// for the Build Engine
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// by Jonathon Fowler (jf@jonof.id.au)
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#ifndef a_h_
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#define a_h_
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#include "compat.h"
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#define CLASSIC_SLICE_BY_4
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#define A_C_RESTRICT __restrict
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#define CLASSIC_NONPOW2_YSIZE_SPRITES
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#ifdef LUNATIC
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# define CLASSIC_NONPOW2_YSIZE_WALLS
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#endif
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#define SLOPTABLESIZ 32768
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#define HALFSLOPTABLESIZ (SLOPTABLESIZ>>1)
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extern int32_t sloptable[SLOPTABLESIZ];
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/** Definitions of high-precision integer types. **/
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// Should be used for values that represent coordinates with which calculations
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// like dot product are carried out. Substituting 32-bit ints for these will
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// very likely yield issues in border cases:
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typedef int64_t coord_t;
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// Should be used for values that may overflow if 32-bit arithmetic were used,
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// but where no other adverse effect (except being undefined behavior,
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// obviously) is expected to result:
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typedef int64_t inthi_t;
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#define inthi_rintf llrintf
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#define ENGINE_USING_A_C
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#define prevlineasm1 vlineasm1
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void setvlinebpl(int32_t dabpl);
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void fixtransluscence(intptr_t datransoff);
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void settransnormal(void);
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void settransreverse(void);
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void sethlinesizes(int32_t logx, int32_t logy, intptr_t bufplc);
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void setpalookupaddress(char *paladdr);
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void setuphlineasm4(int32_t bxinc, int32_t byinc);
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void hlineasm4(bssize_t cnt, int32_t skiploadincs, int32_t paloffs, uint32_t by, uint32_t bx, intptr_t p);
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void setupslopevlin(int32_t logylogx, intptr_t bufplc, int32_t pinc);
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void slopevlin(intptr_t p, int32_t i, intptr_t slopaloffs, bssize_t cnt, int32_t bx, int32_t by);
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void setupvlineasm(int32_t neglogy);
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int32_t vlineasm1(int32_t vinc, intptr_t paloffs, bssize_t cnt, uint32_t vplc, intptr_t bufplc, intptr_t p);
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void vlineasm4(bssize_t cnt, char *p);
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void setupmvlineasm(int32_t neglogy, int32_t dosaturate);
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int32_t mvlineasm1(int32_t vinc, intptr_t paloffs, bssize_t cnt, uint32_t vplc, intptr_t bufplc, intptr_t p);
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void mvlineasm4(bssize_t cnt, char *p);
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void setuptvlineasm(int32_t neglogy, int32_t dosaturate);
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int32_t tvlineasm1(int32_t vinc, intptr_t paloffs, bssize_t cnt, uint32_t vplc, intptr_t bufplc, intptr_t p);
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void setuptvlineasm2(int32_t neglogy, intptr_t paloffs1, intptr_t paloffs2);
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void tvlineasm2(uint32_t vplc2, int32_t vinc1, intptr_t bufplc1, intptr_t bufplc2, uint32_t vplc1, intptr_t p);
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void msethlineshift(int32_t logx, int32_t logy);
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void mhline(intptr_t bufplc, uint32_t bx, int32_t cntup16, int32_t junk, uint32_t by, intptr_t p);
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void tsethlineshift(int32_t logx, int32_t logy);
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void thline(intptr_t bufplc, uint32_t bx, int32_t cntup16, int32_t junk, uint32_t by, intptr_t p);
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void setupspritevline(intptr_t paloffs, int32_t bxinc, int32_t byinc, int32_t ysiz);
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void spritevline(int32_t bx, int32_t by, bssize_t cnt, intptr_t bufplc, intptr_t p);
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void msetupspritevline(intptr_t paloffs, int32_t bxinc, int32_t byinc, int32_t ysiz);
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void mspritevline(int32_t bx, int32_t by, bssize_t cnt, intptr_t bufplc, intptr_t p);
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void tsetupspritevline(intptr_t paloffs, int32_t bxinc, int32_t byinc, int32_t ysiz);
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void tspritevline(int32_t bx, int32_t by, bssize_t cnt, intptr_t bufplc, intptr_t p);
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void setupdrawslab (int32_t dabpl, intptr_t pal);
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void drawslab (int32_t dx, int32_t v, int32_t dy, int32_t vi, intptr_t vptr, intptr_t p);
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void stretchhline (intptr_t p0, int32_t u, bssize_t cnt, int32_t uinc, intptr_t rptr, intptr_t p);
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void mmxoverlay();
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#endif // a_h_
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