2 * Mesa 3-D graphics library
4 * Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included
14 * in all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
25 #ifndef PROG_EXECUTE_H
26 #define PROG_EXECUTE_H
28 #include "main/config.h"
29 #include "main/mtypes.h"
32 typedef void (*FetchTexelLodFunc
)(struct gl_context
*ctx
, const GLfloat texcoord
[4],
33 GLfloat lambda
, GLuint unit
, GLfloat color
[4]);
35 typedef void (*FetchTexelDerivFunc
)(struct gl_context
*ctx
, const GLfloat texcoord
[4],
36 const GLfloat texdx
[4],
37 const GLfloat texdy
[4],
39 GLuint unit
, GLfloat color
[4]);
42 /** NOTE: This must match SWRAST_MAX_WIDTH */
43 #define PROG_MAX_WIDTH 16384
47 * Virtual machine state used during execution of vertex/fragment programs.
49 struct gl_program_machine
51 const struct gl_program
*CurProgram
;
53 /** Fragment Input attributes */
54 GLfloat (*Attribs
)[PROG_MAX_WIDTH
][4];
57 GLuint NumDeriv
; /**< Max index into DerivX/Y arrays */
58 GLuint CurElement
; /**< Index into Attribs arrays */
60 /** Vertex Input attribs */
61 GLfloat VertAttribs
[VERT_ATTRIB_MAX
][4];
63 GLfloat Temporaries
[MAX_PROGRAM_TEMPS
][4];
64 GLfloat Outputs
[MAX_PROGRAM_OUTPUTS
][4];
65 GLfloat (*EnvParams
)[4]; /**< Vertex or Fragment env parameters */
66 GLuint CondCodes
[4]; /**< COND_* value for x/y/z/w */
67 GLint AddressReg
[MAX_PROGRAM_ADDRESS_REGS
][4];
68 GLfloat SystemValues
[SYSTEM_VALUE_MAX
][4];
70 const GLubyte
*Samplers
; /** Array mapping sampler var to tex unit */
72 GLuint CallStack
[MAX_PROGRAM_CALL_DEPTH
]; /**< For CAL/RET instructions */
73 GLuint StackDepth
; /**< Index/ptr to top of CallStack[] */
75 /** Texture fetch functions */
76 FetchTexelLodFunc FetchTexelLod
;
77 FetchTexelDerivFunc FetchTexelDeriv
;
82 _mesa_get_program_register(struct gl_context
*ctx
, gl_register_file file
,
83 GLuint index
, GLfloat val
[4]);
86 _mesa_execute_program(struct gl_context
*ctx
,
87 const struct gl_program
*program
,
88 struct gl_program_machine
*machine
);
91 #endif /* PROG_EXECUTE_H */