1/**************************************************************************
2 *
3 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28
29#ifndef I915_PROGRAM_H
30#define I915_PROGRAM_H
31
32#include "i915_context.h"
33#include "i915_reg.h"
34
35
36
37/* Having zero and one in here makes the definition of swizzle a lot
38 * easier.
39 */
40#define UREG_TYPE_SHIFT               29
41#define UREG_NR_SHIFT                 24
42#define UREG_CHANNEL_X_NEGATE_SHIFT   23
43#define UREG_CHANNEL_X_SHIFT          20
44#define UREG_CHANNEL_Y_NEGATE_SHIFT   19
45#define UREG_CHANNEL_Y_SHIFT          16
46#define UREG_CHANNEL_Z_NEGATE_SHIFT   15
47#define UREG_CHANNEL_Z_SHIFT          12
48#define UREG_CHANNEL_W_NEGATE_SHIFT   11
49#define UREG_CHANNEL_W_SHIFT          8
50#define UREG_CHANNEL_ZERO_NEGATE_MBZ  5
51#define UREG_CHANNEL_ZERO_SHIFT       4
52#define UREG_CHANNEL_ONE_NEGATE_MBZ   1
53#define UREG_CHANNEL_ONE_SHIFT        0
54
55#define UREG_BAD          0xffffffff    /* not a valid ureg */
56
57#define X    SRC_X
58#define Y    SRC_Y
59#define Z    SRC_Z
60#define W    SRC_W
61#define ZERO SRC_ZERO
62#define ONE  SRC_ONE
63
64/* Construct a ureg:
65 */
66#define UREG( type, nr ) (((type)<< UREG_TYPE_SHIFT) |		\
67			  ((nr)  << UREG_NR_SHIFT) |		\
68			  (X     << UREG_CHANNEL_X_SHIFT) |	\
69			  (Y     << UREG_CHANNEL_Y_SHIFT) |	\
70			  (Z     << UREG_CHANNEL_Z_SHIFT) |	\
71			  (W     << UREG_CHANNEL_W_SHIFT) |	\
72			  (ZERO  << UREG_CHANNEL_ZERO_SHIFT) |	\
73			  (ONE   << UREG_CHANNEL_ONE_SHIFT))
74
75#define GET_CHANNEL_SRC( reg, channel ) ((reg<<(channel*4)) & (0xf<<20))
76#define CHANNEL_SRC( src, channel ) (src>>(channel*4))
77
78#define GET_UREG_TYPE(reg) (((reg)>>UREG_TYPE_SHIFT)&REG_TYPE_MASK)
79#define GET_UREG_NR(reg)   (((reg)>>UREG_NR_SHIFT)&REG_NR_MASK)
80
81
82
83#define UREG_XYZW_CHANNEL_MASK 0x00ffff00
84
85/* One neat thing about the UREG representation:
86 */
87static INLINE int
88swizzle(int reg, int x, int y, int z, int w)
89{
90   return ((reg & ~UREG_XYZW_CHANNEL_MASK) |
91           CHANNEL_SRC(GET_CHANNEL_SRC(reg, x), 0) |
92           CHANNEL_SRC(GET_CHANNEL_SRC(reg, y), 1) |
93           CHANNEL_SRC(GET_CHANNEL_SRC(reg, z), 2) |
94           CHANNEL_SRC(GET_CHANNEL_SRC(reg, w), 3));
95}
96
97/* Another neat thing about the UREG representation:
98 */
99static INLINE int
100negate(int reg, int x, int y, int z, int w)
101{
102   return reg ^ (((x & 1) << UREG_CHANNEL_X_NEGATE_SHIFT) |
103                 ((y & 1) << UREG_CHANNEL_Y_NEGATE_SHIFT) |
104                 ((z & 1) << UREG_CHANNEL_Z_NEGATE_SHIFT) |
105                 ((w & 1) << UREG_CHANNEL_W_NEGATE_SHIFT));
106}
107
108
109extern GLuint i915_get_temp(struct i915_fragment_program *p);
110extern GLuint i915_get_utemp(struct i915_fragment_program *p);
111extern void i915_release_utemps(struct i915_fragment_program *p);
112
113
114extern GLuint i915_emit_texld(struct i915_fragment_program *p,
115                              GLuint live_regs,
116                              GLuint dest,
117                              GLuint destmask,
118                              GLuint sampler, GLuint coord, GLuint op);
119
120extern GLuint i915_emit_arith(struct i915_fragment_program *p,
121                              GLuint op,
122                              GLuint dest,
123                              GLuint mask,
124                              GLuint saturate,
125                              GLuint src0, GLuint src1, GLuint src2);
126
127extern GLuint i915_emit_decl(struct i915_fragment_program *p,
128                             GLuint type, GLuint nr, GLuint d0_flags);
129
130
131extern GLuint i915_emit_const1f(struct i915_fragment_program *p, GLfloat c0);
132
133extern GLuint i915_emit_const2f(struct i915_fragment_program *p,
134                                GLfloat c0, GLfloat c1);
135
136extern GLuint i915_emit_const4fv(struct i915_fragment_program *p,
137                                 const GLfloat * c);
138
139extern GLuint i915_emit_const4f(struct i915_fragment_program *p,
140                                GLfloat c0, GLfloat c1,
141                                GLfloat c2, GLfloat c3);
142
143
144extern GLuint i915_emit_param4fv(struct i915_fragment_program *p,
145                                 const GLfloat * values);
146
147extern void i915_program_error(struct i915_fragment_program *p,
148                               const char *fmt, ...);
149
150extern void i915_init_program(struct i915_context *i915,
151                              struct i915_fragment_program *p);
152
153extern void i915_upload_program(struct i915_context *i915,
154                                struct i915_fragment_program *p);
155
156extern void i915_fini_program(struct i915_fragment_program *p);
157
158extern void i915_update_program(struct gl_context *ctx);
159
160#endif
161