2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2005 Brian Paul All Rights Reserved.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 * \file t_arb_program.c
27 * Compile vertex programs to an intermediate representation.
28 * Execute vertex programs over a buffer of vertices.
29 * \author Keith Whitwell, Brian Paul
33 #ifndef _T_VB_ARBPROGRAM_H_
34 #define _T_VB_ARBPROGRAM_H_
37 /* New, internal instructions:
39 #define RSW (MAX_OPCODE)
40 #define MSK (MAX_OPCODE+1)
41 #define REL (MAX_OPCODE+2)
44 * Register files for vertex programs
46 #define FILE_REG 0 /* temporaries */
47 #define FILE_LOCAL_PARAM 1 /* local parameters */
48 #define FILE_ENV_PARAM 2 /* global parameters */
49 #define FILE_STATE_PARAM 3 /* GL state references */
62 #define REG_ID 64 /* 0,0,0,1 */
63 #define REG_ONES 65 /* 1,1,1,1 */
64 #define REG_SWZ 66 /* 1,-1,0,0 */
65 #define REG_NEG 67 /* -1,-1,-1,-1 */
66 #define REG_LIT 68 /* 1,0,0,1 */
67 #define REG_LIT2 69 /* 1,0,0,1 */
68 #define REG_SCRATCH 70 /* internal temporary. XXX we can't actually use this because 70 doesn't fit in the 5-bit 'dst' instruction field! */
69 #define REG_UNDEF 127 /* special case - never used */
71 #define REG_INVALID ~0
73 /* ARB_vp instructions are broken down into one or more of the
74 * following micro-instructions, each representable in a 64 bit packed
101 GLuint swz
:12; /* xyzw01 */
117 * Reduced swizzle is a 3-bit field, for simplicity same as normal swizzle, X/Y/Z/W/0/1 allowed.
134 /*--------------------------------------------------------------------------- */
135 #if defined(USE_SSE_ASM)
137 #define RESTORE_FPU (DEFAULT_X86_FPU)
138 #define RND_NEG_FPU (DEFAULT_X86_FPU | 0x400)
140 #define RESTORE_FPU (FAST_X86_FPU)
141 #define RND_NEG_FPU (FAST_X86_FPU | 0x400)
144 #define RESTORE_FPU 0
145 #define RND_NEG_FPU 0
150 * Private storage for the vertex program pipeline stage.
152 struct arb_vp_machine
{
153 GLfloat (*File
[4])[4]; /* All values referencable from the program. */
155 struct input input
[VERT_ATTRIB_MAX
];
158 struct output output
[VERT_RESULT_MAX
];
161 GLvector4f attribs
[VERT_RESULT_MAX
]; /**< result vectors. */
162 GLvector4f ndcCoords
; /**< normalized device coords */
163 GLubyte
*clipmask
; /**< clip flags */
164 GLubyte ormask
, andmask
; /**< for clipping */
166 GLuint vtx_nr
; /**< loop counter */
168 struct vertex_buffer
*VB
;
170 GLshort fpucntl_rnd_neg
; /* constant value */
171 GLshort fpucntl_restore
; /* constant value */
173 GLboolean try_codegen
;
176 struct tnl_compiled_program
{
177 union instruction instructions
[1024];
178 GLint nr_instructions
;
179 void (*compiled_func
)( struct arb_vp_machine
* ); /**< codegen'd program */
182 void _tnl_program_string_change( struct gl_vertex_program
* );
183 void _tnl_program_destroy( struct gl_vertex_program
* );
185 void _tnl_disassem_vba_insn( union instruction op
);
187 GLboolean
_tnl_sse_codegen_vertex_program(struct tnl_compiled_program
*p
);