1 /**************************************************************************
2 *
3 * Copyright 2003 VMware, Inc.
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 VMWARE 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)®_TYPE_MASK)
79 #define GET_UREG_NR(reg) (((reg)>>UREG_NR_SHIFT)®_NR_MASK)
80
81
82
83 #define UREG_XYZW_CHANNEL_MASK 0x00ffff00
84
85 /* One neat thing about the UREG representation:
86 */
87 static inline int
swizzle(int reg,int x,int y,int z,int w)88 swizzle(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 */
99 static inline int
negate(int reg,int x,int y,int z,int w)100 negate(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
109 extern GLuint i915_get_temp(struct i915_fragment_program *p);
110 extern GLuint i915_get_utemp(struct i915_fragment_program *p);
111 extern void i915_release_utemps(struct i915_fragment_program *p);
112
113
114 extern 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
120 extern 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
127 extern GLuint i915_emit_decl(struct i915_fragment_program *p,
128 GLuint type, GLuint nr, GLuint d0_flags);
129
130
131 extern GLuint i915_emit_const1f(struct i915_fragment_program *p, GLfloat c0);
132
133 extern GLuint i915_emit_const2f(struct i915_fragment_program *p,
134 GLfloat c0, GLfloat c1);
135
136 extern GLuint i915_emit_const4fv(struct i915_fragment_program *p,
137 const GLfloat * c);
138
139 extern GLuint i915_emit_const4f(struct i915_fragment_program *p,
140 GLfloat c0, GLfloat c1,
141 GLfloat c2, GLfloat c3);
142
143
144 extern GLuint i915_emit_param4fv(struct i915_fragment_program *p,
145 const GLfloat * values);
146
147 extern void i915_program_error(struct i915_fragment_program *p,
148 const char *fmt, ...);
149
150 extern void i915_init_program(struct i915_context *i915,
151 struct i915_fragment_program *p);
152
153 extern void i915_upload_program(struct i915_context *i915,
154 struct i915_fragment_program *p);
155
156 extern void i915_fini_program(struct i915_fragment_program *p);
157
158 extern void i915_update_program(struct gl_context *ctx);
159
160 #endif
161