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#include "assyntax.h"
SEG_TEXT
#if !defined(NASM_ASSEMBLER) && !defined(MASM_ASSEMBLER)
#define LLBL(a) .L##a
#else
#define LLBL(a) a
#endif
/*#define MAT_SX 0 accessed by REGIND !! */
#define MAT_SY 20
#define MAT_SZ 40
#define MAT_TX 48
#define MAT_TY 52
#define MAT_TZ 56
/* Do viewport map and perspective projection. Args should look like:
*
* x86_3dnow_project_vertices( float *first_vertex,
* const float *last_vertex,
* float *matrix,
* GLuint stride )
*
* This routine assumes a sane vertex layout with x,y,z,w as
* the first four elements, to be projected in clip-space, to
* x/w,y/w,z/w,1/w, and then transformed according to the matrix to
* device space. The device coordinates will overwrite the clip
* coordinates as the first four elements of the vertex.
*
* If projection is required for other elements, such as texcoords,
* you will have to code a specialized version of this routine. See
* FX/X86 for examples.
*
* These routines are simplified versions of the FX code written by
* Holger.
*/
GLOBL GLNAME( gl_3dnow_project_vertices )
GLNAME( gl_3dnow_project_vertices ):
PUSH_L ( EBP )
FEMMS
PREFETCH ( REGOFF(8, ESP) ) /* fetch the first vertex */
MOV_L ( REGOFF(8, ESP), ECX ) /* first_vert */
MOV_L ( REGOFF(12, ESP), EDX ) /* last_vert */
MOV_L ( REGOFF(16, ESP), EBP ) /* matrix */
MOV_L ( REGOFF(20, ESP), EAX ) /* stride */
MOVD ( REGOFF(MAT_TX, EBP), MM6 ) /* | tx */
PUNPCKLDQ ( REGOFF(MAT_TY, EBP), MM6 ) /* ty | tx */
MOVD ( REGIND(EBP), MM5 )
PUNPCKLDQ ( REGOFF(MAT_SY, EBP), MM5 ) /* vsy | vsx */
MOVD ( REGOFF(MAT_SZ, EBP), MM1 ) /* | vsz */
SUB_L ( ECX, EDX ) /* last -= first */
ALIGNTEXT32
LLBL(v16_3dnow_pv_loop_start):
PREFETCH ( REGOFF(64, ECX) ) /* fetch one/two verts ahead */
MOVD ( REGOFF(12, ECX), MM0 ) /* | f[3] */
PFRCP ( MM0, MM0 ) /* oow = 1/f[3] */
MOVD ( REGOFF(12, ECX), MM7 ) /* | f[3] */
PFRCPIT1 ( MM0, MM7 )
PFRCPIT2 ( MM0, MM7 ) /* oow | oow */
PUNPCKLDQ ( MM7, MM7 )
MOVQ ( REGIND(ECX), MM2 ) /* f[1] | f[0] */
PFMUL ( MM7, MM2 ) /* f[1] * oow | f[0] * oow */
MOVD ( REGOFF(8, ECX), MM3 ) /* | f[2] */
PFMUL ( MM7, MM3 ) /* | f[2] * oow */
MOVD ( REGOFF(MAT_TZ, EBP), MM0 ) /* | vtz */
PFMUL ( MM1, MM3 ) /* | f[2] *= vsz */
PFADD ( MM0, MM3 ) /* | f[2] += vtz */
PFMUL ( MM5, MM2 ) /* f[1] *= vsy | f[0] *= vsx */
PFADD ( MM6, MM2 ) /* f[1] += vty | f[0] += vtx */
PUNPCKLDQ ( MM7, MM3 ) /* f[3] = oow | f[2] */
MOVQ ( MM2, REGOFF(0, ECX) )
MOVQ ( MM3, REGOFF(8, ECX) )
ADD_L ( EAX, ECX ) /* f += stride */
SUB_L ( EAX, EDX )
JA ( LLBL(v16_3dnow_pv_loop_start) )
FEMMS
POP_L ( EBP )
RET
GLOBL GLNAME( gl_3dnow_project_clipped_vertices )
GLNAME( gl_3dnow_project_clipped_vertices ):
PUSH_L ( EBP )
PUSH_L ( ESI )
FEMMS
PREFETCH ( REGOFF(12, ESP) ) /* fetch the first vertex */
MOV_L ( REGOFF(12, ESP), ECX ) /* first_vert */
MOV_L ( REGOFF(16, ESP), EDX ) /* last_vert */
MOV_L ( REGOFF(20, ESP), EBP ) /* matrix */
MOV_L ( REGOFF(24, ESP), EAX ) /* stride */
MOV_L ( REGOFF(28, ESP), ESI ) /* clip_mask */
MOVD ( REGOFF(MAT_TX, EBP), MM6 ) /* | tx */
PUNPCKLDQ ( REGOFF(MAT_TY, EBP), MM6 ) /* ty | tx */
MOVD ( REGIND(EBP), MM5 )
PUNPCKLDQ ( REGOFF(MAT_SY, EBP), MM5 ) /* vsy | vsx */
MOVD ( REGOFF(MAT_SZ, EBP), MM1 ) /* | vsz */
ALIGNTEXT32
LLBL(v16_3dnow_pcv_loop_start):
CMP_B ( CONST(0), REGIND(ESI) )
JNE ( LLBL(v16_3dnow_pcv_skip) )
MOVD ( REGOFF(12, ECX), MM0) /* | f[3] */
PFRCP ( MM0, MM0 ) /* oow = 1/f[3] */
MOVD ( REGOFF(12, ECX), MM7) /* | f[3] */
PFRCPIT1 ( MM0, MM7 )
PFRCPIT2 ( MM0, MM7 ) /* oow | oow */
PUNPCKLDQ ( MM7, MM7 )
MOVQ ( REGIND(ECX), MM2 ) /* f[1] | f[0] */
PFMUL ( MM7, MM2 ) /* f[1] * oow | f[0] * oow */
MOVD ( REGOFF(8, ECX), MM3 ) /* | f[2] */
PFMUL ( MM7, MM3 ) /* | f[2] * oow */
MOVD ( REGOFF(MAT_TZ, EBP), MM0 ) /* | vtz */
PFMUL ( MM1, MM3 ) /* | f[2] *= vsz */
PFADD ( MM0, MM3 ) /* | f[2] += vtz */
PFMUL ( MM5, MM2 ) /* f[1] *= vsy | f[0] *= vsx */
PFADD ( MM6, MM2 ) /* f[1] += vty | f[0] += vtx */
PUNPCKLDQ ( MM7, MM3 ) /* f[3] = oow | f[2] */
MOVQ ( MM2, REGOFF(0, ECX) )
MOVQ ( MM3, REGOFF(8, ECX) )
LLBL(v16_3dnow_pcv_skip):
ADD_L ( EAX, ECX ) /* f += stride */
INC_L ( ESI ) /* next ClipMask */
CMP_L ( ECX, EDX )
JNE ( LLBL(v16_3dnow_pcv_loop_start) )
FEMMS
POP_L ( ESI )
POP_L ( EBP )
RET
/*
* void gl_3dnow_transform_v16 (GLfloat *dest,
* const GLfloat *m,
* const GLfloat *src,
* GLuint src_stride,
* GLuint count )
*
* These tranformation functions could disappear if the standard ones
* took an output stride.
*/
GLOBL GLNAME( gl_v16_3dnow_general_xform )
GLNAME( gl_v16_3dnow_general_xform ):
PUSH_L ( EDI )
PUSH_L ( ESI )
MOV_L ( REGOFF(12, ESP), EAX ) /* dest */
MOV_L ( REGOFF(16, ESP), ESI ) /* mat */
MOV_L ( REGOFF(20, ESP), EDX ) /* src */
MOV_L ( REGOFF(24, ESP), EDI ) /* src_stride */
MOV_L ( REGOFF(28, ESP), ECX ) /* count */
FEMMS
MOVQ ( REGOFF(MAT_TX, ESI), MM7 ) /* m31 | m30 */
MOVQ ( REGOFF(MAT_TZ, ESI), MM3 ) /* m33 | m32 */
ALIGNTEXT32
LLBL(v16_3dnow_general_loop):
PREFETCH ( REGOFF(128, EAX) ) /* prefetch 2 output verts ahead*/
PREFETCH ( REGOFF(32, EDX) ) /* */
MOVQ ( REGIND(EDX), MM0 ) /* x1 | x0 */
MOVD ( REGOFF(8, EDX), MM1 ) /* | x2 */
MOVQ ( REGIND(ESI), MM4 ) /* m00 | m01 */
PUNPCKHDQ ( MM0, MM2 ) /* x1 | */
MOVQ ( REGOFF(16, ESI),MM5 ) /* m10 | m11 */
PUNPCKLDQ ( MM0, MM0 ) /* x0 | x0 */
MOVQ ( REGOFF(32, ESI),MM6 ) /* m20 | m21 */
PFMUL ( MM0, MM4 ) /* x0.m01 | x0.m00 */
PUNPCKHDQ ( MM2, MM2 ) /* x1 | x1 */
PFMUL ( MM2, MM5 ) /* x1.m11 | x1.m10 */
PUNPCKLDQ ( MM1, MM1 ) /* x2 | x2 */
PFMUL ( REGOFF(8,ESI), MM0 ) /* x0.m03 | x0.m02 */
PFMUL ( REGOFF(24,ESI),MM2 ) /* x1.m13 | x1.m12 */
PFMUL ( MM1, MM6 ) /* x2.m21 | x2.m20 */
PFADD ( MM4, MM5 ) /* x0m01+x1m11 | x0m00+x1m10 */
PFMUL ( REGOFF(40,ESI),MM1 ) /* x2.m21 | x2.m20 */
PFADD ( MM0, MM2 ) /* x0m03+x1m13 | x0m02+x1m12 */
PFADD ( MM5, MM6 ) /* (xm012)1 | (xm012)0 */
PFADD ( MM1, MM2 ) /* (xm012)3 | (xm012)2 */
PFADD ( MM7, MM6 ) /* r1 | r0 */
PFADD ( MM3, MM2 ) /* r3 | r2 */
ADD_L ( EDI, EDX ) /* next input */
MOVQ ( MM6, REGIND(EAX) ) /* */
MOVQ ( MM2, REGOFF(8,EAX) ) /* */
ADD_L ( CONST(64), EAX ) /* next output */
DEC_L ( ECX )
JNE ( LLBL(v16_3dnow_general_loop) )
FEMMS
POP_L ( ESI )
POP_L ( EDI )
RET
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