1 /*
2 * Mesa 3-D graphics library
3 *
4 * Copyright (C) 1999-2008 Brian Paul 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 "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:
12 *
13 * The above copyright notice and this permission notice shall be included
14 * in all copies or substantial portions of the Software.
15 *
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.
23 */
24
25 /**
26 * \file prog_parameter.c
27 * Program parameter lists and functions.
28 * \author Brian Paul
29 */
30
31 #ifndef PROG_PARAMETER_H
32 #define PROG_PARAMETER_H
33
34 #include <stdbool.h>
35 #include <stdint.h>
36 #include "prog_statevars.h"
37
38 #include <string.h>
39
40 #ifdef __cplusplus
41 extern "C" {
42 #endif
43
44 /**
45 * Names of the various vertex/fragment program register files, etc.
46 *
47 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
48 * All values should fit in a 4-bit field.
49 *
50 * NOTE: PROGRAM_STATE_VAR, PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be
51 * considered to be "uniform" variables since they can only be set outside
52 * glBegin/End. They're also all stored in the same Parameters array.
53 */
54 typedef enum
55 {
56 PROGRAM_TEMPORARY, /**< machine->Temporary[] */
57 PROGRAM_ARRAY, /**< Arrays & Matrixes */
58 PROGRAM_INPUT, /**< machine->Inputs[] */
59 PROGRAM_OUTPUT, /**< machine->Outputs[] */
60 PROGRAM_STATE_VAR, /**< gl_program->Parameters[] */
61 PROGRAM_CONSTANT, /**< gl_program->Parameters[] */
62 PROGRAM_UNIFORM, /**< gl_program->Parameters[] */
63 PROGRAM_WRITE_ONLY, /**< A dummy, write-only register */
64 PROGRAM_ADDRESS, /**< machine->AddressReg */
65 PROGRAM_SAMPLER, /**< for shader samplers, compile-time only */
66 PROGRAM_SYSTEM_VALUE,/**< InstanceId, PrimitiveID, etc. */
67 PROGRAM_UNDEFINED, /**< Invalid/TBD value */
68 PROGRAM_IMMEDIATE, /**< Immediate value, used by TGSI */
69 PROGRAM_BUFFER, /**< for shader buffers, compile-time only */
70 PROGRAM_MEMORY, /**< for shared, global and local memory */
71 PROGRAM_IMAGE, /**< for shader images, compile-time only */
72 PROGRAM_HW_ATOMIC, /**< for hw atomic counters, compile-time only */
73 PROGRAM_FILE_MAX
74 } gl_register_file;
75
76
77 /**
78 * Actual data for constant values of parameters.
79 */
80 typedef union gl_constant_value
81 {
82 GLfloat f;
83 GLint b;
84 GLint i;
85 GLuint u;
86 } gl_constant_value;
87
88
89 /**
90 * Program parameter.
91 * Used by shaders/programs for uniforms, constants, varying vars, etc.
92 */
93 struct gl_program_parameter
94 {
95 const char *Name; /**< Null-terminated string */
96 gl_register_file Type:5; /**< PROGRAM_CONSTANT or STATE_VAR */
97
98 /**
99 * We need to keep track of whether the param is padded for use in the
100 * shader cache.
101 */
102 bool Padded:1;
103
104 GLenum16 DataType; /**< GL_FLOAT, GL_FLOAT_VEC2, etc */
105
106 /**
107 * Number of components (1..4), or more.
108 * If the number of components is greater than 4,
109 * this parameter is part of a larger uniform like a GLSL matrix or array.
110 * The next program parameter's Size will be Size-4 of this parameter.
111 */
112 GLushort Size;
113 /**
114 * A sequence of STATE_* tokens and integers to identify GL state.
115 */
116 gl_state_index16 StateIndexes[STATE_LENGTH];
117
118 /**
119 * Index of this parameter's uniform storage.
120 */
121 uint32_t UniformStorageIndex;
122
123 /**
124 * Index of the first uniform storage that is associated with the same
125 * variable as this parameter.
126 */
127 uint32_t MainUniformStorageIndex;
128 };
129
130
131 /**
132 * List of gl_program_parameter instances.
133 */
134 struct gl_program_parameter_list
135 {
136 GLuint Size; /**< allocated size of Parameters, ParameterValues */
137 GLuint NumParameters; /**< number of used parameters in array */
138 unsigned NumParameterValues; /**< number of used parameter values array */
139 struct gl_program_parameter *Parameters; /**< Array [Size] */
140 unsigned *ParameterValueOffset;
141 gl_constant_value *ParameterValues; /**< Array [Size] of gl_constant_value */
142 GLbitfield StateFlags; /**< _NEW_* flags indicating which state changes
143 might invalidate ParameterValues[] */
144 };
145
146
147 extern struct gl_program_parameter_list *
148 _mesa_new_parameter_list(void);
149
150 extern struct gl_program_parameter_list *
151 _mesa_new_parameter_list_sized(unsigned size);
152
153 extern void
154 _mesa_free_parameter_list(struct gl_program_parameter_list *paramList);
155
156 extern void
157 _mesa_reserve_parameter_storage(struct gl_program_parameter_list *paramList,
158 unsigned reserve_slots);
159
160 extern GLint
161 _mesa_add_parameter(struct gl_program_parameter_list *paramList,
162 gl_register_file type, const char *name,
163 GLuint size, GLenum datatype,
164 const gl_constant_value *values,
165 const gl_state_index16 state[STATE_LENGTH],
166 bool pad_and_align);
167
168 extern GLint
169 _mesa_add_typed_unnamed_constant(struct gl_program_parameter_list *paramList,
170 const gl_constant_value values[4], GLuint size,
171 GLenum datatype, GLuint *swizzleOut);
172
173 static inline GLint
_mesa_add_unnamed_constant(struct gl_program_parameter_list * paramList,const gl_constant_value values[4],GLuint size,GLuint * swizzleOut)174 _mesa_add_unnamed_constant(struct gl_program_parameter_list *paramList,
175 const gl_constant_value values[4], GLuint size,
176 GLuint *swizzleOut)
177 {
178 return _mesa_add_typed_unnamed_constant(paramList, values, size, GL_NONE,
179 swizzleOut);
180 }
181
182 extern GLint
183 _mesa_add_sized_state_reference(struct gl_program_parameter_list *paramList,
184 const gl_state_index16 stateTokens[STATE_LENGTH],
185 const unsigned size, bool pad_and_align);
186
187 extern GLint
188 _mesa_add_state_reference(struct gl_program_parameter_list *paramList,
189 const gl_state_index16 stateTokens[]);
190
191
192 static inline GLint
_mesa_lookup_parameter_index(const struct gl_program_parameter_list * paramList,const char * name)193 _mesa_lookup_parameter_index(const struct gl_program_parameter_list *paramList,
194 const char *name)
195 {
196 if (!paramList)
197 return -1;
198
199 /* name must be null-terminated */
200 for (GLint i = 0; i < (GLint) paramList->NumParameters; i++) {
201 if (paramList->Parameters[i].Name &&
202 strcmp(paramList->Parameters[i].Name, name) == 0)
203 return i;
204 }
205
206 return -1;
207 }
208
209 static inline bool
_mesa_gl_datatype_is_64bit(GLenum datatype)210 _mesa_gl_datatype_is_64bit(GLenum datatype)
211 {
212 switch (datatype) {
213 case GL_DOUBLE:
214 case GL_DOUBLE_VEC2:
215 case GL_DOUBLE_VEC3:
216 case GL_DOUBLE_VEC4:
217 case GL_DOUBLE_MAT2:
218 case GL_DOUBLE_MAT2x3:
219 case GL_DOUBLE_MAT2x4:
220 case GL_DOUBLE_MAT3:
221 case GL_DOUBLE_MAT3x2:
222 case GL_DOUBLE_MAT3x4:
223 case GL_DOUBLE_MAT4:
224 case GL_DOUBLE_MAT4x2:
225 case GL_DOUBLE_MAT4x3:
226 case GL_INT64_ARB:
227 case GL_INT64_VEC2_ARB:
228 case GL_INT64_VEC3_ARB:
229 case GL_INT64_VEC4_ARB:
230 case GL_UNSIGNED_INT64_ARB:
231 case GL_UNSIGNED_INT64_VEC2_ARB:
232 case GL_UNSIGNED_INT64_VEC3_ARB:
233 case GL_UNSIGNED_INT64_VEC4_ARB:
234 return true;
235 default:
236 return false;
237 }
238 }
239
240 #ifdef __cplusplus
241 }
242 #endif
243
244 #endif /* PROG_PARAMETER_H */
245