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/*
* Mesa 3-D graphics library
* Version: 6.5
*
* Copyright (C) 1999-2005 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 (MAX_OPCODE)
#define MSK (MAX_OPCODE+1)
#define REL (MAX_OPCODE+2)
/**
* Register files for vertex programs
*/
#define FILE_REG 0 /* temporaries */
#define FILE_LOCAL_PARAM 1 /* local parameters */
#define FILE_ENV_PARAM 2 /* global parameters */
#define FILE_STATE_PARAM 3 /* GL state references */
#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_IN31 63
#define REG_ID 64 /* 0,0,0,1 */
#define REG_ONES 65 /* 1,1,1,1 */
#define REG_SWZ 66 /* 1,-1,0,0 */
#define REG_NEG 67 /* -1,-1,-1,-1 */
#define REG_LIT 68 /* 1,0,0,1 */
#define REG_LIT2 69 /* 1,0,0,1 */
#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! */
#define REG_UNDEF 127 /* special case - never used */
#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 64 bit packed
* structure.
*/
struct reg {
GLuint file:2;
GLuint idx:7;
};
union instruction {
struct {
GLuint opcode:7;
GLuint dst:5;
GLuint file0:2;
GLuint idx0:7;
GLuint file1:2;
GLuint idx1:7;
GLuint pad:2;
GLuint pad2;
} alu;
struct {
GLuint opcode:7;
GLuint dst:5;
GLuint file0:2;
GLuint idx0:7;
GLuint neg:4;
GLuint swz:12; /* xyzw01 */
} rsw;
struct {
GLuint opcode:7;
GLuint dst:5;
GLuint file:2;
GLuint idx:7;
GLuint mask:4;
GLuint pad:7;
GLuint pad2;
} msk;
};
/**
* Reduced swizzle is a 3-bit field, for simplicity same as normal swizzle, X/Y/Z/W/0/1 allowed.
*/
struct input {
GLuint idx;
GLfloat *data;
GLuint stride;
GLuint size;
};
struct output {
GLuint idx;
GLfloat *data;
};
/*--------------------------------------------------------------------------- */
#if defined(USE_SSE_ASM)
#ifdef NO_FAST_MATH
#define RESTORE_FPU (DEFAULT_X86_FPU)
#define RND_NEG_FPU (DEFAULT_X86_FPU | 0x400)
#else
#define RESTORE_FPU (FAST_X86_FPU)
#define RND_NEG_FPU (FAST_X86_FPU | 0x400)
#endif
#else
#define RESTORE_FPU 0
#define RND_NEG_FPU 0
#endif
/**
* Private storage for the vertex program pipeline stage.
*/
struct arb_vp_machine {
GLfloat (*File[4])[4]; /* All values referencable from the program. */
struct input input[_TNL_ATTRIB_MAX];
GLuint nr_inputs;
struct output output[VERT_RESULT_MAX];
GLuint nr_outputs;
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;
GLshort fpucntl_rnd_neg; /* constant value */
GLshort fpucntl_restore; /* constant value */
GLboolean try_codegen;
};
struct tnl_compiled_program {
union instruction instructions[1024];
GLint nr_instructions;
void (*compiled_func)( struct arb_vp_machine * ); /**< codegen'd program */
};
void _tnl_program_string_change( struct vertex_program * );
void _tnl_program_destroy( struct vertex_program * );
void _tnl_disassem_vba_insn( union instruction op );
GLboolean _tnl_sse_codegen_vertex_program(struct tnl_compiled_program *p);
#endif
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