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WIP attempt

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This commit is contained in:
Luke Benstead 2019-03-19 13:35:02 +00:00
parent 3cb24c4fb4
commit a2059db588
1 changed files with 19 additions and 3 deletions
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22
GL/draw.c
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@ -426,11 +426,27 @@ static inline void transformNormalToEyeSpace(GLfloat* normal) {
mat_trans_normal3(normal[0], normal[1], normal[2]);
}
#define INT_CAST(a) *((int*)&(a))
#define XORSWAP_UNSAFE(a, b) ((a)^=(b),(b)^=(a),(a)^=(b))
#define swapVertex(a, b) \
do { \
ClipVertex temp = *a; \
*a = *b; \
*b = temp; \
XORSWAP_UNSAFE(a->flags, b->flags); \
XORSWAP_UNSAFE(INT_CAST(a->xyz[0]), INT_CAST(b->xyz[0])); \
XORSWAP_UNSAFE(INT_CAST(a->xyz[1]), INT_CAST(b->xyz[1])); \
XORSWAP_UNSAFE(INT_CAST(a->xyz[2]), INT_CAST(b->xyz[2])); \
XORSWAP_UNSAFE(INT_CAST(a->uv[0]), INT_CAST(b->uv[0])); \
XORSWAP_UNSAFE(INT_CAST(a->uv[1]), INT_CAST(b->uv[1])); \
XORSWAP_UNSAFE(a->bgra[0], b->bgra[0]); \
XORSWAP_UNSAFE(a->bgra[1], b->bgra[1]); \
XORSWAP_UNSAFE(a->bgra[2], b->bgra[2]); \
XORSWAP_UNSAFE(a->bgra[3], b->bgra[3]); \
XORSWAP_UNSAFE(a->oargb, b->oargb); \
XORSWAP_UNSAFE(INT_CAST(a->nxyz[0]), INT_CAST(b->nxyz[0])); \
XORSWAP_UNSAFE(INT_CAST(a->nxyz[1]), INT_CAST(b->nxyz[1])); \
XORSWAP_UNSAFE(INT_CAST(a->nxyz[2]), INT_CAST(b->nxyz[2])); \
XORSWAP_UNSAFE(INT_CAST(a->w), INT_CAST(b->w)); \
XORSWAP_UNSAFE(INT_CAST(a->st[0]), INT_CAST(b->st[0])); \
XORSWAP_UNSAFE(INT_CAST(a->st[1]), INT_CAST(b->st[1])); \
} while(0)
static inline void genTriangles(ClipVertex* output, GLuint count) {