src/mesa/tnl/t_vb_arbprogram.h

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  6.3
   4  *
   5  * Copyright (C) 1999-2004  Brian Paul   All Rights Reserved.
   6  *
   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:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  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.
  23  */
  24
  25 /**
  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
  30  */
  31
  32
  33 #ifndef _T_VB_ARBPROGRAM_H_
  34 #define _T_VB_ARBPROGRAM_H_
  35
  36
  37 /* New, internal instructions:
  38  */
  39 #define RSW        (VP_MAX_OPCODE)
  40 #define MSK        (VP_MAX_OPCODE+1)
  41 #define REL        (VP_MAX_OPCODE+2)
  42
  43 #define FILE_REG         0
  44 #define FILE_LOCAL_PARAM 1
  45 #define FILE_ENV_PARAM   2
  46 #define FILE_STATE_PARAM 3
  47
  48 #define REG_ARG0   0
  49 #define REG_ARG1   1
  50 #define REG_ARG2   2
  51 #define REG_RES    3
  52 #define REG_ADDR   4
  53 #define REG_TMP0   5
  54 #define REG_TMP11  16
  55 #define REG_OUT0   17
  56 #define REG_OUT14  31
  57 #define REG_IN0    32
  58 #define REG_IN31   63
  59 #define REG_ID     64           /* 0,0,0,1 */
  60 #define REG_ONES   65           /* 1,1,1,1 */
  61 #define REG_SWZ    66           /* -1,1,0,0 */
  62 #define REG_NEG    67           /* -1,-1,-1,-1 */
  63 #define REG_UNDEF  127          /* special case - never used */
  64 #define REG_MAX    128
  65 #define REG_INVALID ~0
  66
  67 /* ARB_vp instructions are broken down into one or more of the
  68  * following micro-instructions, each representable in a 32 bit packed
  69  * structure.
  70  */
  71 struct reg {
  72    GLuint file:2;
  73    GLuint idx:7;
  74 };
  75
  76
  77 union instruction {
  78    struct {
  79       GLuint opcode:6;
  80       GLuint dst:5;
  81       GLuint file0:2;
  82       GLuint idx0:7;
  83       GLuint file1:2;
  84       GLuint idx1:7;
  85       GLuint pad:3;
  86    } alu;
  87
  88    struct {
  89       GLuint opcode:6;
  90       GLuint dst:5;
  91       GLuint file0:2;
  92       GLuint idx0:7;
  93       GLuint neg:4;
  94       GLuint swz:8;             /* xyzw only */
  95    } rsw;
  96
  97    struct {
  98       GLuint opcode:6;
  99       GLuint dst:5;
 100       GLuint file:2;
 101       GLuint idx:7;
 102       GLuint mask:4;
 103       GLuint pad:1;
 104    } msk;
 105
 106    GLuint dword;
 107 };
 108
 109 #define RSW_NOOP ((0<<0) | (1<<2) | (2<<4) | (3<<6))
 110 #define GET_RSW(swz, idx)      (((swz) >> ((idx)*2)) & 0x3)
 111
 112
 113 struct input {
 114    GLuint idx;
 115    GLfloat *data;
 116    GLuint stride;
 117    GLuint size;
 118 };
 119
 120 struct output {
 121    GLuint idx;
 122    GLfloat *data;
 123 };
 124
 125
 126
 127 /*--------------------------------------------------------------------------- */
 128
 129 /*!
 130  * Private storage for the vertex program pipeline stage.
 131  */
 132 struct arb_vp_machine {
 133    GLfloat (*File[4])[4];       /* All values referencable from the program. */
 134
 135    struct input input[_TNL_ATTRIB_MAX];
 136    GLuint nr_inputs;
 137
 138    struct output output[15];
 139    GLuint nr_outputs;
 140
 141    GLvector4f attribs[VERT_RESULT_MAX]; /**< result vectors. */
 142    GLvector4f ndcCoords;              /**< normalized device coords */
 143    GLubyte *clipmask;                 /**< clip flags */
 144    GLubyte ormask, andmask;           /**< for clipping */
 145
 146    GLuint vtx_nr;               /**< loop counter */
 147
 148    struct vertex_buffer *VB;
 149    GLcontext *ctx;
 150
 151    GLboolean try_codegen;
 152 };
 153
 154 struct tnl_compiled_program {
 155    union instruction instructions[1024];
 156    GLint nr_instructions;
 157    void (*compiled_func)( struct arb_vp_machine * ); /**< codegen'd program */
 158 };
 159
 160 void _tnl_program_string_change( struct vertex_program * );
 161 void _tnl_program_destroy( struct vertex_program * );
 162
 163 void _tnl_disassem_vba_insn( union instruction op );
 164
 165 GLboolean _tnl_sse_codegen_vertex_program(struct tnl_compiled_program *p);
 166
 167 #endif