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Diffstat (limited to 'src/mesa')
| -rw-r--r-- | src/mesa/tnl/t_vb_arbprogram.h | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/src/mesa/tnl/t_vb_arbprogram.h b/src/mesa/tnl/t_vb_arbprogram.h new file mode 100644 index 00000000000..618a96c74ea --- /dev/null +++ b/src/mesa/tnl/t_vb_arbprogram.h @@ -0,0 +1,178 @@ +/* + * Mesa 3-D graphics library + * Version: 6.3 + * + * Copyright (C) 1999-2004 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. + */ + +/** + * \file t_arb_program.c + * Compile vertex programs to an intermediate representation. + * Execute vertex programs over a buffer of vertices. + * \author Keith Whitwell, Brian Paul + */ + + +#ifndef _T_VB_ARBPROGRAM_H_ +#define _T_VB_ARBPROGRAM_H_ + + +/* New, internal instructions: + */ +#define RSW (VP_MAX_OPCODE) +#define MSK (VP_MAX_OPCODE+1) +#define REL (VP_MAX_OPCODE+2) + + +/* Layout of register file: + + 0 -- Scratch (Arg0) + 1 -- Scratch (Arg1) + 2 -- Scratch (Result) + 4 -- Program Temporary 0 + 16 -- Program Temporary 12 (max for NV_VERTEX_PROGRAM) + 17 -- Output 0 + 31 -- Output 15 (max for NV_VERTEX_PROGRAM) (Last writeable register) + 32 -- Parameter 0 + .. + 127 -- Parameter 63 (max for NV_VERTEX_PROGRAM) + +*/ + +#define FILE_REG 0 +#define FILE_LOCAL_PARAM 1 +#define FILE_ENV_PARAM 2 +#define FILE_STATE_PARAM 3 + + +#define REG_ARG0 0 +#define REG_ARG1 1 +#define REG_ARG2 2 +#define REG_RES 3 +#define REG_ADDR 4 +#define REG_TMP0 5 +#define REG_TMP11 16 +#define REG_OUT0 17 +#define REG_OUT14 31 +#define REG_IN0 32 +#define REG_IN15 47 +#define REG_ID 48 /* 0,0,0,1 */ +#define REG_MAX 128 +#define REG_INVALID ~0 + +/* ARB_vp instructions are broken down into one or more of the + * following micro-instructions, each representable in a 32 bit packed + * structure. + */ + +struct reg { + GLuint file:2; + GLuint idx:7; +}; + + +union instruction { + struct { + GLuint opcode:6; + GLuint dst:5; + GLuint file0:2; + GLuint idx0:7; + GLuint file1:2; + GLuint idx1:7; + GLuint pad:3; + } alu; + + struct { + GLuint opcode:6; + GLuint dst:5; + GLuint file0:2; + GLuint idx0:7; + GLuint neg:4; + GLuint swz:8; /* xyzw only */ + } rsw; + + struct { + GLuint opcode:6; + GLuint dst:5; + GLuint file:2; + GLuint idx:7; + GLuint mask:4; + GLuint pad:1; + } msk; + + GLuint dword; +}; + +#define RSW_NOOP ((0<<0) | (1<<2) | (2<<4) | (3<<6)) +#define GET_RSW(swz, idx) (((swz) >> ((idx)*2)) & 0x3) + + + +struct compilation { + GLuint reg_active; + union instruction *csr; + struct vertex_buffer *VB; /* for input sizes! */ +}; + +struct input { + GLuint idx; + GLfloat *data; + GLuint stride; + GLuint size; +}; + +struct output { + GLuint idx; + GLfloat *data; +}; + +/*--------------------------------------------------------------------------- */ + +/*! + * Private storage for the vertex program pipeline stage. + */ +struct arb_vp_machine { + GLfloat reg[REG_MAX][4]; /* Program temporaries, inputs and outputs */ + GLfloat (*File[4])[4]; /* All values reference-able from the program. */ + GLint AddressReg; + + struct input input[16]; + GLuint nr_inputs; + + struct output output[15]; + GLuint nr_outputs; + + union instruction store[1024]; + union instruction *instructions; + GLint nr_instructions; + + GLvector4f attribs[VERT_RESULT_MAX]; /**< result vectors. */ + GLvector4f ndcCoords; /**< normalized device coords */ + GLubyte *clipmask; /**< clip flags */ + GLubyte ormask, andmask; /**< for clipping */ + + GLuint vtx_nr; /**< loop counter */ + + struct vertex_buffer *VB; + GLcontext *ctx; +}; + + +#endif |