Subversion Repositories Kolibri OS

 * Mesa 3-D graphics library

 *

 * 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

 * THE AUTHORS OR COPYRIGHT HOLDERS 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.

 */

 * NOTE: Avoid using spaces in between '(' ')' and arguments, especially

 * with macros like CONST, LLBL that expand to CONCAT(...).  Putting spaces

 * in there will break the build on some platforms.

 */

#include "matypes.h"

#include "clip_args.h"

#define SRC1		REGOFF(4, ESI)

#define SRC2		REGOFF(8, ESI)

#define SRC3		REGOFF(12, ESI)

#define DST0		REGOFF(0, EDI)

#define DST1		REGOFF(4, EDI)

#define DST2		REGOFF(8, EDI)

#define DST3		REGOFF(12, EDI)

#define MAT0		REGOFF(0, EDX)

#define MAT1		REGOFF(4, EDX)

#define MAT2		REGOFF(8, EDX)

#define MAT3		REGOFF(12, EDX)

 * Table for clip test.

 *

 * 	bit6 = SRC3 < 0

 * 	bit5 = SRC2 < 0

 * 	bit4 = abs(S(2)) > abs(S(3))

 * 	bit3 = SRC1 < 0

 * 	bit2 = abs(S(1)) > abs(S(3))

 * 	bit1 = SRC0 < 0

 * 	bit0 = abs(S(0)) > abs(S(3))

 */

	D_BYTE 0x00, 0x01, 0x00, 0x02, 0x04, 0x05, 0x04, 0x06

	D_BYTE 0x00, 0x01, 0x00, 0x02, 0x08, 0x09, 0x08, 0x0a

	D_BYTE 0x20, 0x21, 0x20, 0x22, 0x24, 0x25, 0x24, 0x26

	D_BYTE 0x20, 0x21, 0x20, 0x22, 0x28, 0x29, 0x28, 0x2a

	D_BYTE 0x00, 0x01, 0x00, 0x02, 0x04, 0x05, 0x04, 0x06

	D_BYTE 0x00, 0x01, 0x00, 0x02, 0x08, 0x09, 0x08, 0x0a

	D_BYTE 0x10, 0x11, 0x10, 0x12, 0x14, 0x15, 0x14, 0x16

	D_BYTE 0x10, 0x11, 0x10, 0x12, 0x18, 0x19, 0x18, 0x1a

	D_BYTE 0x3f, 0x3d, 0x3f, 0x3e, 0x37, 0x35, 0x37, 0x36

	D_BYTE 0x3f, 0x3d, 0x3f, 0x3e, 0x3b, 0x39, 0x3b, 0x3a

	D_BYTE 0x2f, 0x2d, 0x2f, 0x2e, 0x27, 0x25, 0x27, 0x26

	D_BYTE 0x2f, 0x2d, 0x2f, 0x2e, 0x2b, 0x29, 0x2b, 0x2a

	D_BYTE 0x3f, 0x3d, 0x3f, 0x3e, 0x37, 0x35, 0x37, 0x36

	D_BYTE 0x3f, 0x3d, 0x3f, 0x3e, 0x3b, 0x39, 0x3b, 0x3a

	D_BYTE 0x1f, 0x1d, 0x1f, 0x1e, 0x17, 0x15, 0x17, 0x16

	D_BYTE 0x1f, 0x1d, 0x1f, 0x1e, 0x1b, 0x19, 0x1b, 0x1a

 * _mesa_x86_cliptest_points4

 *

 *   AL:  ormask

 *   AH:  andmask

 *   EBX: temp0

 *   ECX: temp1

 *   EDX: clipmask[]

 *   ESI: clip[]

 *   EDI: proj[]

 *   EBP: temp2

 */

#define ELFPIC

#endif

GLOBL GLNAME( _mesa_x86_cliptest_points4 )

HIDDEN(_mesa_x86_cliptest_points4)

GLNAME( _mesa_x86_cliptest_points4 ):

#define FRAME_OFFSET 20

#else

#define FRAME_OFFSET 16

#endif

	PUSH_L( ESI )

	PUSH_L( EDI )

	PUSH_L( EBP )

	PUSH_L( EBX )

	/* store pointer to clip_table on stack */

	CALL( LLBL(ctp4_get_eip) )

	ADD_L( CONST(_GLOBAL_OFFSET_TABLE_), EBX )

	MOV_L( REGOFF(clip_table@GOT, EBX), EBX )

	PUSH_L( EBX )

	JMP( LLBL(ctp4_clip_table_ready) )

	/* store eip in ebx */

	MOV_L( REGIND(ESP), EBX )

	RET

#endif

	MOV_L( ARG_DEST, EDI )

	MOV_L( ARG_OR, EBX )

	MOV_L( REGOFF(V4F_STRIDE, ESI), EAX )

	MOV_L( REGOFF(V4F_START, ESI), ESI )

	MOV_L( EAX, ARG_SOURCE )	/* put stride in ARG_SOURCE */

	MOV_L( ECX, REGOFF(V4F_COUNT, EDI) )

	ADD_L( EDX, ECX )

	CMP_L( ECX, EDX )

	MOV_B( REGIND(EBP), AH )

LLBL(ctp4_top):

	FDIV_S( SRC3 )		/* GH: don't care about div-by-zero */

	MOV_L( SRC2, EBX )

	ADD_L( EBP, EBP )	/* ebp = abs(S(3))*2 ; carry = sign of S(3) */

	ADD_L( EBX, EBX )	/* ebx = abs(S(2))*2 ; carry = sign of S(2) */

	CMP_L( EBX, EBP )	/* carry = abs(S(2))*2 > abs(S(3))*2 */

	MOV_L( SRC1, EBX )

	CMP_L( EBX, EBP )	/* carry = abs(S(1))*2 > abs(S(3))*2 */

	MOV_L( SRC0, EBX )

	CMP_L( EBX, EBP )	/* carry = abs(S(0))*2 > abs(S(3))*2 */

	MOV_L( REGIND(ESP), EBP )	/* clip_table */

#else

	MOV_B( REGOFF(clip_table,ECX), CL )

#endif

	AND_B( CL, AH )

	MOV_B( CL, REGIND(EDX) )

	MOV_L( CONST(0), DST1 )

	MOV_L( CONST(0), DST2 )

	MOV_L( CONST(0x3f800000), DST3 )

	FMUL2( ST(1), ST0 )

	FMUL2( ST(2), ST0 )

	FMUL2( ST(3), ST0 )

	FSTP_S( DST0 )		/* F1 F2 F3 */

	FSTP_S( DST1 )		/* F2 F3 */

	FSTP_S( DST2 )		/* F3 */

	FSTP_S( DST3 )		/* */

	ADD_L( CONST(16), EDI )

	CMP_L( EDX, ARG_CLIP )

	MOV_L( ARG_AND, EDX )

	MOV_B( AH, REGIND(EDX) )

#ifdef ELFPIC

	POP_L( ESI )			/* discard ptr to clip_table */

#endif

	POP_L( EBX )

	POP_L( EBP )

	POP_L( EDI )

	POP_L( ESI )

GLOBL GLNAME( _mesa_x86_cliptest_points4_np )

HIDDEN(_mesa_x86_cliptest_points4_np)

GLNAME( _mesa_x86_cliptest_points4_np ):

#define FRAME_OFFSET 20

#else

#define FRAME_OFFSET 16

#endif

	PUSH_L( ESI )

	PUSH_L( EDI )

	PUSH_L( EBP )

	PUSH_L( EBX )

	/* store pointer to clip_table on stack */

	CALL( LLBL(ctp4_np_get_eip) )

	ADD_L( CONST(_GLOBAL_OFFSET_TABLE_), EBX )

	MOV_L( REGOFF(clip_table@GOT, EBX), EBX )

	PUSH_L( EBX )

	JMP( LLBL(ctp4_np_clip_table_ready) )

	/* store eip in ebx */

	MOV_L( REGIND(ESP), EBX )

	RET

#endif

	/* slot */

	MOV_L( ARG_OR, EBX )

	MOV_L( REGOFF(V4F_STRIDE, ESI), EAX )

	MOV_L( REGOFF(V4F_START, ESI), ESI )

	ADD_L( EDX, ECX )

	CMP_L( ECX, EDX )

	MOV_B( REGIND(EBP), AH )

LLBL(ctp4_np_top):

	MOV_L( SRC2, EBX )

	ADD_L( EBP, EBP )	/* ebp = abs(S(3))*2 ; carry = sign of S(3) */

	ADD_L( EBX, EBX )	/* ebx = abs(S(2))*2 ; carry = sign of S(2) */

	CMP_L( EBX, EBP )	/* carry = abs(S(2))*2 > abs(S(3))*2 */

	MOV_L( SRC1, EBX )

	CMP_L( EBX, EBP )	/* carry = abs(S(1))*2 > abs(S(3))*2 */

	MOV_L( SRC0, EBX )

	CMP_L( EBX, EBP )	/* carry = abs(S(0))*2 > abs(S(3))*2 */

	MOV_L( REGIND(ESP), EBP )	/* clip_table */

#else

	MOV_B( REGOFF(clip_table,ECX), CL )

#endif

	AND_B( CL, AH )

	MOV_B( CL, REGIND(EDX) )

	/* slot */

	CMP_L( EDX, EDI )

	MOV_L( ARG_AND, EDX )

	MOV_B( AH, REGIND(EDX) )

#ifdef ELFPIC

	POP_L( ESI )			/* discard ptr to clip_table */

#endif

	POP_L( EBX )

	POP_L( EBP )

	POP_L( EDI )

	POP_L( ESI )

	.section .note.GNU-stack,"",%progbits

#endif