53 lines
1.8 KiB
C
Executable File
53 lines
1.8 KiB
C
Executable File
/* KallistiGL for KallistiOS ##version##
|
|
|
|
libgl/gl-sh4.h
|
|
Copyright (C) 2013-2014 Josh "PH3NOM" Pearson
|
|
|
|
Macros for utilizing the Dreamcast's SH4 CPU vector / matrix math functions.
|
|
*/
|
|
|
|
#ifndef GL_SH4_H
|
|
#define GL_SH4_H
|
|
|
|
typedef float vector3f[3]; /* 3 float vector */
|
|
typedef float matrix4f[4][4]; /* 4x4 float matrix */
|
|
|
|
/* DEG2RAD - convert Degrees to Radians = PI / 180.0f */
|
|
#define DEG2RAD (0.01745329251994329576923690768489)
|
|
|
|
/* Calculate Spot Light Angle Cosine = (PI / 180.0f) * (n / 2) */
|
|
#define LCOS(n) fcos(n*0.00872664625997164788461845384244)
|
|
|
|
/* Internal GL API macro */
|
|
#define mat_trans_fv12() { \
|
|
__asm__ __volatile__( \
|
|
"fldi1 fr15\n" \
|
|
"ftrv xmtrx, fv12\n" \
|
|
"fldi1 fr14\n" \
|
|
"fdiv fr15, fr14\n" \
|
|
"fmul fr14, fr12\n" \
|
|
"fmul fr14, fr13\n" \
|
|
: "=f" (__x), "=f" (__y), "=f" (__z) \
|
|
: "0" (__x), "1" (__y), "2" (__z) \
|
|
: "fr15" ); \
|
|
}
|
|
|
|
/* Internal GL API macro */
|
|
#define mat_trans_fv12_nodiv() { \
|
|
__asm__ __volatile__( \
|
|
"fldi1 fr15\n" \
|
|
"ftrv xmtrx, fv12\n" \
|
|
: "=f" (__x), "=f" (__y), "=f" (__z) \
|
|
: "0" (__x), "1" (__y), "2" (__z) ); \
|
|
}
|
|
|
|
#define mat_trans_fv12_nodivw() { \
|
|
__asm__ __volatile__( \
|
|
"fldi1 fr15\n" \
|
|
"ftrv xmtrx, fv12\n" \
|
|
: "=f" (__x), "=f" (__y), "=f" (__z), "=f" (__w) \
|
|
: "0" (__x), "1" (__y), "2" (__z), "3" (__w) ); \
|
|
}
|
|
|
|
#endif
|