sse_xform3.s

这是一个开放源代码的与WINNT/WIN2K/WIN2003兼容的操作系统

/* $Id: sse_xform3.S,v 1.3 2005/01/04 14:33:47 brianp Exp $ */

/*
 * Mesa 3-D graphics library
 * Version:  3.5
 *
 * Copyright (C) 1999-2001  Brian Paul   All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

/** TODO:
  * - insert PREFETCH instructions to avoid cache-misses !
  * - some more optimizations are possible...
  * - for 40-50% more performance in the SSE-functions, the
  *   data (trans-matrix, src_vert, dst_vert) needs to be 16byte aligned !
  */

#ifdef USE_SSE_ASM
#include "matypes.h"
#include "xform_args.h"

   SEG_TEXT

#define S(i) 	REGOFF(i * 4, ESI)
#define D(i) 	REGOFF(i * 4, EDI)
#define M(i) 	REGOFF(i * 4, EDX)


ALIGNTEXT4
GLOBL GLNAME(_mesa_sse_transform_points3_general)
HIDDEN(_mesa_sse_transform_points3_general)
GLNAME( _mesa_sse_transform_points3_general ):

#define FRAME_OFFSET 8
    PUSH_L    ( ESI )
    PUSH_L    ( EDI )

    MOV_L( REGOFF(OFFSET_SOURCE+8, ESP), ESI ) 	/* ptr to source GLvector4f */
    MOV_L( REGOFF(OFFSET_DEST+8, ESP), EDI ) 	/* ptr to dest GLvector4f */

    MOV_L( ARG_MATRIX, EDX ) 			/* ptr to matrix */
    MOV_L( REGOFF(V4F_COUNT, ESI), ECX ) 	/* source count */

    CMP_L     ( CONST(0), ECX )			/* count == 0 ? */
    JE        ( LLBL(K_GTPGR_finish) )		/* yes -> nothing to do. */

    MOV_L( REGOFF(V4F_STRIDE, ESI), EAX ) 	/* stride */
    OR_L( CONST(VEC_SIZE_4), REGOFF(V4F_FLAGS, EDI) ) 	/* set dest flags */

    MOV_L( ECX, REGOFF(V4F_COUNT, EDI) ) 	/* set dest count */
    MOV_L( CONST(4), REGOFF(V4F_SIZE, EDI) ) 	/* set dest size */

    SHL_L( CONST(4), ECX ) 			/* count *= 16 */
    MOV_L( REGOFF(V4F_START, ESI), ESI ) 	/* ptr to first source vertex */

    MOV_L( REGOFF(V4F_START, EDI), EDI ) 	/* ptr to first dest vertex */
    ADD_L( EDI, ECX ) 				/* count += dest ptr */


ALIGNTEXT32
    MOVAPS    ( REGOFF(0, EDX), XMM0 )	/* m0  | m1  | m2  | m3 */
    MOVAPS    ( REGOFF(16, EDX), XMM1 )	/* m4  | m5  | m6  | m7 */
    MOVAPS    ( REGOFF(32, EDX), XMM2 )	/* m8  | m9  | m10 | m11 */
    MOVAPS    ( REGOFF(48, EDX), XMM3 )	/* m12 | m13 | m14 | m15 */


ALIGNTEXT32
LLBL(K_GTPGR_top):
    MOVSS     ( REGOFF(0, ESI), XMM4 )		/*    |    |    | ox */
    SHUFPS    ( CONST(0x0), XMM4, XMM4 )	/* ox | ox | ox | ox */
    MOVSS     ( REGOFF(4, ESI), XMM5 )		/*    |    |    | oy */
    SHUFPS    ( CONST(0x0), XMM5, XMM5 )	/* oy | oy | oy | oy */
    MOVSS     ( REGOFF(8, ESI), XMM6 )		/*    |    |    | oz */
    SHUFPS    ( CONST(0x0), XMM6, XMM6 )	/* oz | oz | oz | oz */

    MULPS     ( XMM0, XMM4 )		/* m3*ox  | m2*ox  | m1*ox | m0*ox */
    MULPS     ( XMM1, XMM5 )		/* m7*oy  | m6*oy  | m5*oy | m4*oy */
    MULPS     ( XMM2, XMM6 )		/* m11*oz | m10*oz | m9*oz | m8*oz */

    ADDPS     ( XMM5, XMM4 )
    ADDPS     ( XMM6, XMM4 )
    ADDPS     ( XMM3, XMM4 )

    MOVAPS    ( XMM4, REGOFF(0, EDI) )

LLBL(K_GTPGR_skip):
    ADD_L     ( CONST(16), EDI )
    ADD_L     ( EAX, ESI )
    CMP_L     ( ECX, EDI )
    JNE       ( LLBL(K_GTPGR_top) )

LLBL(K_GTPGR_finish):
    POP_L     ( EDI )
    POP_L     ( ESI )
    RET
#undef FRAME_OFFSET


ALIGNTEXT4
GLOBL GLNAME(_mesa_sse_transform_points3_identity)
HIDDEN(_mesa_sse_transform_points3_identity)
GLNAME( _mesa_sse_transform_points3_identity ):

#define FRAME_OFFSET 8
    PUSH_L    ( ESI )
    PUSH_L    ( EDI )

    MOV_L( REGOFF(OFFSET_SOURCE+8, ESP), ESI ) 	/* ptr to source GLvector4f */
    MOV_L( REGOFF(OFFSET_DEST+8, ESP), EDI ) 	/* ptr to dest GLvector4f */

    MOV_L( REGOFF(V4F_COUNT, ESI), ECX ) 	/* source count */

    TEST_L( ECX, ECX)
    JZ( LLBL(K_GTPIR_finish) ) 			/* count was zero; go to finish */

    MOV_L( REGOFF(V4F_STRIDE, ESI), EAX ) 	/* stride */
    OR_L( CONST(VEC_SIZE_3), REGOFF(V4F_FLAGS, EDI) ) 	/* set dest flags */

    MOV_L( ECX, REGOFF(V4F_COUNT, EDI) ) 	/* set dest count */
    MOV_L( CONST(3), REGOFF(V4F_SIZE, EDI) ) 	/* set dest size */

    SHL_L( CONST(4), ECX ) 			/* count *= 16 */
    MOV_L( REGOFF(V4F_START, ESI), ESI ) 	/* ptr to first source vertex */

    MOV_L( REGOFF(V4F_START, EDI), EDI ) 	/* ptr to first dest vertex */
    ADD_L( EDI, ECX ) 				/* count += dest ptr */

    CMP_L( ESI, EDI )
    JE( LLBL(K_GTPIR_finish) )


ALIGNTEXT32
LLBL(K_GTPIR_top):
    MOVLPS    ( S(0), XMM0 )
    MOVLPS    ( XMM0, D(0) )
    MOVSS     ( S(2), XMM0 )
    MOVSS     ( XMM0, D(2) )

LLBL(K_GTPIR_skip):
    ADD_L     ( CONST(16), EDI )
    ADD_L     ( EAX, ESI )
    CMP_L     ( ECX, EDI )
    JNE       ( LLBL(K_GTPIR_top) )

LLBL(K_GTPIR_finish):
    POP_L     ( EDI )
    POP_L     ( ESI )
    RET
#undef FRAME_OFFSET




ALIGNTEXT4
GLOBL GLNAME(_mesa_sse_transform_points3_3d_no_rot)
HIDDEN(_mesa_sse_transform_points3_3d_no_rot)
GLNAME(_mesa_sse_transform_points3_3d_no_rot):

#define FRAME_OFFSET 8
    PUSH_L( ESI )
    PUSH_L( EDI )

    MOV_L( REGOFF(OFFSET_SOURCE+8, ESP), ESI ) 	/* ptr to source GLvector4f */
    MOV_L( REGOFF(OFFSET_DEST+8, ESP), EDI ) 	/* ptr to dest GLvector4f */


    MOV_L( ARG_MATRIX, EDX ) 			/* ptr to matrix */
    MOV_L( REGOFF(V4F_COUNT, ESI), ECX ) 	/* source count */

    TEST_L( ECX, ECX)
    JZ( LLBL(K_GTP3DNRR_finish) ) 		/* count was zero; go to finish */

    MOV_L( REGOFF(V4F_STRIDE, ESI), EAX ) 	/* stride */
    OR_L( CONST(VEC_SIZE_3), REGOFF(V4F_FLAGS, EDI) ) 	/* set dest flags */

    MOV_L( ECX, REGOFF(V4F_COUNT, EDI) ) 	/* set dest count */
    MOV_L( CONST(3), REGOFF(V4F_SIZE, EDI) ) 	/* set dest size */

    SHL_L( CONST(4), ECX ) 			/* count *= 16 */
    MOV_L( REGOFF(V4F_START, ESI), ESI ) 	/* ptr to first source vertex */

    MOV_L( REGOFF(V4F_START, EDI), EDI ) 	/* ptr to first dest vertex */
    ADD_L( EDI, ECX ) 				/* count += dest ptr */


ALIGNTEXT32
    MOVSS    ( M(0), XMM1 )			/* - | - |  -  | m0  */
    MOVSS    ( M(5), XMM2 )			/* - | - |  -  | m5  */
    UNPCKLPS ( XMM2, XMM1 )			/* - | - | m5  | m0  */
    MOVLPS   ( M(12), XMM2 )			/* - | - | m13 | m12 */
    MOVSS    ( M(10), XMM3 )			/* - | - |  -  | m10 */
    MOVSS    ( M(14), XMM4 )			/* - | - |  -  | m14 */

ALIGNTEXT32
LLBL(K_GTP3DNRR_top):

    MOVLPS   ( S(0), XMM0 )			/* - | - |  s1   | s0 */
    MULPS    ( XMM1, XMM0 )			/* - | - | s1*m5 | s0*m0 */
    ADDPS    ( XMM2, XMM0 )			/* - | - | +m13  | +m12 */
    MOVLPS   ( XMM0, D(0) )			/* -> D(1) | -> D(0) */

    MOVSS    ( S(2), XMM0 )			/* sz */
    MULSS    ( XMM3, XMM0 )			/* sz*m10 */
    ADDSS    ( XMM4, XMM0 )			/* +m14 */
    MOVSS    ( XMM0, D(2) )			/* -> D(2) */

LLBL(K_GTP3DNRR_skip):
    ADD_L    ( CONST(16), EDI )
    ADD_L    ( EAX, ESI )
    CMP_L    ( ECX, EDI )
    JNE      ( LLBL(K_GTP3DNRR_top) )

LLBL(K_GTP3DNRR_finish):
    POP_L    ( EDI )
    POP_L    ( ESI )
    RET
#undef FRAME_OFFSET



ALIGNTEXT4
GLOBL GLNAME(_mesa_sse_transform_points3_perspective)
HIDDEN(_mesa_sse_transform_points3_perspective)
GLNAME(_mesa_sse_transform_points3_perspective):

#define FRAME_OFFSET 8
    PUSH_L   ( ESI )
    PUSH_L   ( EDI )

    MOV_L( REGOFF(OFFSET_SOURCE+8, ESP), ESI ) 	/* ptr to source GLvector4f */
    MOV_L( REGOFF(OFFSET_DEST+8, ESP), EDI ) 	/* ptr to dest GLvector4f */

    MOV_L( ARG_MATRIX, EDX ) 			/* ptr to matrix */
    MOV_L( REGOFF(V4F_COUNT, ESI), ECX ) 	/* source count */

    TEST_L( ECX, ECX)
    JZ( LLBL(K_GTP3PR_finish) )			/* count was zero; go to finish */