2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2004 Brian Paul All Rights Reserved.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
27 * Vertex and fragment program support functions.
39 #include "nvfragparse.h"
40 #include "nvfragprog.h"
41 #include "nvvertparse.h"
42 #include "nvvertprog.h"
45 /**********************************************************************/
46 /* Utility functions */
47 /**********************************************************************/
50 /* A pointer to this dummy program is put into the hash table when
51 * glGenPrograms is called.
53 struct program _mesa_DummyProgram
;
57 * Init context's vertex/fragment program state
60 _mesa_init_program(GLcontext
*ctx
)
64 ctx
->Program
.ErrorPos
= -1;
65 ctx
->Program
.ErrorString
= _mesa_strdup("");
67 #if FEATURE_NV_vertex_program || FEATURE_ARB_vertex_program
68 ctx
->VertexProgram
.Enabled
= GL_FALSE
;
69 ctx
->VertexProgram
.PointSizeEnabled
= GL_FALSE
;
70 ctx
->VertexProgram
.TwoSideEnabled
= GL_FALSE
;
71 ctx
->VertexProgram
.Current
= (struct vertex_program
*) ctx
->Shared
->DefaultVertexProgram
;
72 assert(ctx
->VertexProgram
.Current
);
73 ctx
->VertexProgram
.Current
->Base
.RefCount
++;
74 for (i
= 0; i
< MAX_NV_VERTEX_PROGRAM_PARAMS
/ 4; i
++) {
75 ctx
->VertexProgram
.TrackMatrix
[i
] = GL_NONE
;
76 ctx
->VertexProgram
.TrackMatrixTransform
[i
] = GL_IDENTITY_NV
;
80 #if FEATURE_NV_fragment_program || FEATURE_ARB_fragment_program
81 ctx
->FragmentProgram
.Enabled
= GL_FALSE
;
82 ctx
->FragmentProgram
.Current
= (struct fragment_program
*) ctx
->Shared
->DefaultFragmentProgram
;
83 assert(ctx
->FragmentProgram
.Current
);
84 ctx
->FragmentProgram
.Current
->Base
.RefCount
++;
87 #if FEATURE_ATI_fragment_shader
88 ctx
->ATIFragmentShader
.Enabled
= GL_FALSE
;
89 ctx
->ATIFragmentShader
.Current
= (struct ati_fragment_shader
*) ctx
->Shared
->DefaultFragmentShader
;
90 assert(ctx
->ATIFragmentShader
.Current
);
91 ctx
->ATIFragmentShader
.Current
->Base
.RefCount
++;
97 * Free a context's vertex/fragment program state
100 _mesa_free_program_data(GLcontext
*ctx
)
102 #if FEATURE_NV_vertex_program
103 if (ctx
->VertexProgram
.Current
) {
104 ctx
->VertexProgram
.Current
->Base
.RefCount
--;
105 if (ctx
->VertexProgram
.Current
->Base
.RefCount
<= 0)
106 ctx
->Driver
.DeleteProgram(ctx
, &(ctx
->VertexProgram
.Current
->Base
));
109 #if FEATURE_NV_fragment_program
110 if (ctx
->FragmentProgram
.Current
) {
111 ctx
->FragmentProgram
.Current
->Base
.RefCount
--;
112 if (ctx
->FragmentProgram
.Current
->Base
.RefCount
<= 0)
113 ctx
->Driver
.DeleteProgram(ctx
, &(ctx
->FragmentProgram
.Current
->Base
));
116 #if FEATURE_ATI_fragment_shader
117 if (ctx
->ATIFragmentShader
.Current
) {
118 ctx
->ATIFragmentShader
.Current
->Base
.RefCount
--;
119 if (ctx
->ATIFragmentShader
.Current
->Base
.RefCount
<= 0)
120 ctx
->Driver
.DeleteProgram(ctx
, &(ctx
->ATIFragmentShader
.Current
->Base
));
123 _mesa_free((void *) ctx
->Program
.ErrorString
);
130 * Set the vertex/fragment program error state (position and error string).
131 * This is generally called from within the parsers.
134 _mesa_set_program_error(GLcontext
*ctx
, GLint pos
, const char *string
)
136 ctx
->Program
.ErrorPos
= pos
;
137 _mesa_free((void *) ctx
->Program
.ErrorString
);
140 ctx
->Program
.ErrorString
= _mesa_strdup(string
);
145 * Find the line number and column for 'pos' within 'string'.
146 * Return a copy of the line which contains 'pos'. Free the line with
148 * \param string the program string
149 * \param pos the position within the string
150 * \param line returns the line number corresponding to 'pos'.
151 * \param col returns the column number corresponding to 'pos'.
152 * \return copy of the line containing 'pos'.
155 _mesa_find_line_column(const GLubyte
*string
, const GLubyte
*pos
,
156 GLint
*line
, GLint
*col
)
158 const GLubyte
*lineStart
= string
;
159 const GLubyte
*p
= string
;
166 if (*p
== (GLubyte
) '\n') {
173 *col
= (pos
- lineStart
) + 1;
175 /* return copy of this line */
176 while (*p
!= 0 && *p
!= '\n')
179 s
= (GLubyte
*) _mesa_malloc(len
+ 1);
180 _mesa_memcpy(s
, lineStart
, len
);
188 * Initialize a new vertex/fragment program object.
190 static struct program
*
191 _mesa_init_program_struct( GLcontext
*ctx
, struct program
*prog
,
192 GLenum target
, GLuint id
)
197 prog
->Target
= target
;
198 prog
->Resident
= GL_TRUE
;
207 * Initialize a new fragment program object.
210 _mesa_init_fragment_program( GLcontext
*ctx
, struct fragment_program
*prog
,
211 GLenum target
, GLuint id
)
214 return _mesa_init_program_struct( ctx
, &prog
->Base
, target
, id
);
221 * Initialize a new vertex program object.
224 _mesa_init_vertex_program( GLcontext
*ctx
, struct vertex_program
*prog
,
225 GLenum target
, GLuint id
)
228 return _mesa_init_program_struct( ctx
, &prog
->Base
, target
, id
);
234 * Initialize a new ATI fragment shader object.
237 _mesa_init_ati_fragment_shader( GLcontext
*ctx
,
238 struct ati_fragment_shader
*prog
,
239 GLenum target
, GLuint id
)
242 return _mesa_init_program_struct( ctx
, &prog
->Base
, target
, id
);
250 * Allocate and initialize a new fragment/vertex program object but
251 * don't put it into the program hash table. Called via
252 * ctx->Driver.NewProgram. May be overridden (ie. replaced) by a
253 * device driver function to implement OO deriviation with additional
254 * types not understood by this function.
257 * \param id program id/number
258 * \param target program target/type
259 * \return pointer to new program object
262 _mesa_new_program(GLcontext
*ctx
, GLenum target
, GLuint id
)
265 case GL_VERTEX_PROGRAM_ARB
: /* == GL_VERTEX_PROGRAM_NV */
266 return _mesa_init_vertex_program( ctx
, CALLOC_STRUCT(vertex_program
),
268 case GL_FRAGMENT_PROGRAM_NV
:
269 case GL_FRAGMENT_PROGRAM_ARB
:
270 return _mesa_init_fragment_program( ctx
, CALLOC_STRUCT(fragment_program
),
272 case GL_FRAGMENT_SHADER_ATI
:
273 return _mesa_init_ati_fragment_shader( ctx
, CALLOC_STRUCT(ati_fragment_shader
),
277 _mesa_problem(ctx
, "bad target in _mesa_new_program");
284 * Delete a program and remove it from the hash table, ignoring the
286 * Called via ctx->Driver.DeleteProgram. May be wrapped (OO deriviation)
287 * by a device driver function.
290 _mesa_delete_program(GLcontext
*ctx
, struct program
*prog
)
296 _mesa_free(prog
->String
);
297 if (prog
->Target
== GL_VERTEX_PROGRAM_NV
||
298 prog
->Target
== GL_VERTEX_STATE_PROGRAM_NV
) {
299 struct vertex_program
*vprog
= (struct vertex_program
*) prog
;
300 if (vprog
->Instructions
) {
302 for (i
= 0; i
< vprog
->Base
.NumInstructions
; i
++) {
303 if (vprog
->Instructions
[i
].Data
)
304 _mesa_free(vprog
->Instructions
[i
].Data
);
306 _mesa_free(vprog
->Instructions
);
308 if (vprog
->Parameters
)
309 _mesa_free_parameter_list(vprog
->Parameters
);
311 else if (prog
->Target
== GL_FRAGMENT_PROGRAM_NV
||
312 prog
->Target
== GL_FRAGMENT_PROGRAM_ARB
) {
313 struct fragment_program
*fprog
= (struct fragment_program
*) prog
;
314 if (fprog
->Instructions
) {
316 for (i
= 0; i
< fprog
->Base
.NumInstructions
; i
++) {
317 if (fprog
->Instructions
[i
].Data
)
318 _mesa_free(fprog
->Instructions
[i
].Data
);
320 _mesa_free(fprog
->Instructions
);
322 if (fprog
->Parameters
)
323 _mesa_free_parameter_list(fprog
->Parameters
);
325 else if (prog
->Target
== GL_FRAGMENT_SHADER_ATI
) {
326 struct ati_fragment_shader
*atifs
= (struct ati_fragment_shader
*)prog
;
327 if (atifs
->Instructions
)
328 _mesa_free(atifs
->Instructions
);
336 /**********************************************************************/
337 /* Program parameter functions */
338 /**********************************************************************/
340 struct program_parameter_list
*
341 _mesa_new_parameter_list(void)
343 return (struct program_parameter_list
*)
344 _mesa_calloc(sizeof(struct program_parameter_list
));
349 * Free a parameter list and all its parameters
352 _mesa_free_parameter_list(struct program_parameter_list
*paramList
)
354 _mesa_free_parameters(paramList
);
355 _mesa_free(paramList
);
360 * Free all the parameters in the given list, but don't free the
361 * paramList structure itself.
364 _mesa_free_parameters(struct program_parameter_list
*paramList
)
367 for (i
= 0; i
< paramList
->NumParameters
; i
++) {
368 _mesa_free((void *) paramList
->Parameters
[i
].Name
);
370 _mesa_free(paramList
->Parameters
);
371 _mesa_free(paramList
->ParameterValues
);
372 paramList
->NumParameters
= 0;
373 paramList
->Parameters
= NULL
;
378 * Helper function used by the functions below.
381 add_parameter(struct program_parameter_list
*paramList
,
382 const char *name
, const GLfloat values
[4],
383 enum parameter_type type
)
385 const GLuint n
= paramList
->NumParameters
;
387 paramList
->Parameters
= (struct program_parameter
*)
388 _mesa_realloc(paramList
->Parameters
,
389 n
* sizeof(struct program_parameter
),
390 (n
+ 1) * sizeof(struct program_parameter
));
391 paramList
->ParameterValues
= (GLfloat (*)[4])
392 _mesa_realloc(paramList
->ParameterValues
,
393 n
* 4 * sizeof(GLfloat
),
394 (n
+ 1) * 4 * sizeof(GLfloat
));
396 if (!paramList
->Parameters
||
397 !paramList
->ParameterValues
) {
399 paramList
->NumParameters
= 0;
403 paramList
->NumParameters
= n
+ 1;
404 paramList
->Parameters
[n
].Name
= _mesa_strdup(name
);
405 paramList
->Parameters
[n
].Type
= type
;
407 COPY_4V(paramList
->ParameterValues
[n
], values
);
414 * Add a new named program parameter (Ex: NV_fragment_program DEFINE statement)
415 * \return index of the new entry in the parameter list
418 _mesa_add_named_parameter(struct program_parameter_list
*paramList
,
419 const char *name
, const GLfloat values
[4])
421 return add_parameter(paramList
, name
, values
, NAMED_PARAMETER
);
426 * Add a new unnamed constant to the parameter list.
427 * \param paramList - the parameter list
428 * \param values - four float values
429 * \return index of the new parameter.
432 _mesa_add_named_constant(struct program_parameter_list
*paramList
,
433 const char *name
, const GLfloat values
[4])
435 return add_parameter(paramList
, name
, values
, CONSTANT
);
440 * Add a new unnamed constant to the parameter list.
441 * \param paramList - the parameter list
442 * \param values - four float values
443 * \return index of the new parameter.
446 _mesa_add_unnamed_constant(struct program_parameter_list
*paramList
,
447 const GLfloat values
[4])
449 /* generate a new dummy name */
452 _mesa_sprintf(name
, "constant%d", n
);
455 return add_parameter(paramList
, name
, values
, CONSTANT
);
460 * Add a new state reference to the parameter list.
461 * \param paramList - the parameter list
462 * \param state - an array of 6 state tokens
464 * \return index of the new parameter.
467 _mesa_add_state_reference(struct program_parameter_list
*paramList
,
470 /* XXX Should we parse <stateString> here and produce the parameter's
471 * list of STATE_* tokens here, or in the parser?
475 idx
= add_parameter(paramList
, "Some State", NULL
, STATE
);
478 paramList
->Parameters
[idx
].StateIndexes
[a
] = (enum state_index
) stateTokens
[a
];
485 * Lookup a parameter value by name in the given parameter list.
486 * \return pointer to the float[4] values.
489 _mesa_lookup_parameter_value(struct program_parameter_list
*paramList
,
490 GLsizei nameLen
, const char *name
)
498 /* name is null-terminated */
499 for (i
= 0; i
< paramList
->NumParameters
; i
++) {
500 if (_mesa_strcmp(paramList
->Parameters
[i
].Name
, name
) == 0)
501 return paramList
->ParameterValues
[i
];
505 /* name is not null-terminated, use nameLen */
506 for (i
= 0; i
< paramList
->NumParameters
; i
++) {
507 if (_mesa_strncmp(paramList
->Parameters
[i
].Name
, name
, nameLen
) == 0
508 && _mesa_strlen(paramList
->Parameters
[i
].Name
) == (size_t)nameLen
)
509 return paramList
->ParameterValues
[i
];
517 * Lookup a parameter index by name in the given parameter list.
518 * \return index of parameter in the list.
521 _mesa_lookup_parameter_index(struct program_parameter_list
*paramList
,
522 GLsizei nameLen
, const char *name
)
530 /* name is null-terminated */
531 for (i
= 0; i
< (GLint
) paramList
->NumParameters
; i
++) {
532 if (_mesa_strcmp(paramList
->Parameters
[i
].Name
, name
) == 0)
537 /* name is not null-terminated, use nameLen */
538 for (i
= 0; i
< (GLint
) paramList
->NumParameters
; i
++) {
539 if (_mesa_strncmp(paramList
->Parameters
[i
].Name
, name
, nameLen
) == 0
540 && _mesa_strlen(paramList
->Parameters
[i
].Name
) == (size_t)nameLen
)
549 * Use the list of tokens in the state[] array to find global GL state
550 * and return it in <value>. Usually, four values are returned in <value>
551 * but matrix queries may return as many as 16 values.
552 * This function is used for ARB vertex/fragment programs.
553 * The program parser will produce the state[] values.
556 _mesa_fetch_state(GLcontext
*ctx
, const enum state_index state
[],
562 /* state[1] is either 0=front or 1=back side */
563 const GLuint face
= (GLuint
) state
[1];
564 /* state[2] is the material attribute */
568 COPY_4V(value
, ctx
->Light
.Material
.Attrib
[MAT_ATTRIB_FRONT_AMBIENT
]);
570 COPY_4V(value
, ctx
->Light
.Material
.Attrib
[MAT_ATTRIB_BACK_AMBIENT
]);
574 COPY_4V(value
, ctx
->Light
.Material
.Attrib
[MAT_ATTRIB_FRONT_DIFFUSE
]);
576 COPY_4V(value
, ctx
->Light
.Material
.Attrib
[MAT_ATTRIB_BACK_DIFFUSE
]);
580 COPY_4V(value
, ctx
->Light
.Material
.Attrib
[MAT_ATTRIB_FRONT_SPECULAR
]);
582 COPY_4V(value
, ctx
->Light
.Material
.Attrib
[MAT_ATTRIB_BACK_SPECULAR
]);
586 COPY_4V(value
, ctx
->Light
.Material
.Attrib
[MAT_ATTRIB_FRONT_EMISSION
]);
588 COPY_4V(value
, ctx
->Light
.Material
.Attrib
[MAT_ATTRIB_BACK_EMISSION
]);
590 case STATE_SHININESS
:
592 value
[0] = ctx
->Light
.Material
.Attrib
[MAT_ATTRIB_FRONT_SHININESS
][0];
594 value
[0] = ctx
->Light
.Material
.Attrib
[MAT_ATTRIB_BACK_SHININESS
][0];
600 _mesa_problem(ctx
, "Invalid material state in fetch_state");
606 /* state[1] is the light number */
607 const GLuint ln
= (GLuint
) state
[1];
608 /* state[2] is the light attribute */
611 COPY_4V(value
, ctx
->Light
.Light
[ln
].Ambient
);
614 COPY_4V(value
, ctx
->Light
.Light
[ln
].Diffuse
);
617 COPY_4V(value
, ctx
->Light
.Light
[ln
].Specular
);
620 COPY_4V(value
, ctx
->Light
.Light
[ln
].EyePosition
);
622 case STATE_ATTENUATION
:
623 value
[0] = ctx
->Light
.Light
[ln
].ConstantAttenuation
;
624 value
[1] = ctx
->Light
.Light
[ln
].LinearAttenuation
;
625 value
[2] = ctx
->Light
.Light
[ln
].QuadraticAttenuation
;
626 value
[3] = ctx
->Light
.Light
[ln
].SpotExponent
;
628 case STATE_SPOT_DIRECTION
:
629 COPY_3V(value
, ctx
->Light
.Light
[ln
].EyeDirection
);
630 value
[3] = ctx
->Light
.Light
[ln
]._CosCutoff
;
634 GLfloat eye_z
[] = {0, 0, 1};
636 /* Compute infinite half angle vector:
637 * half-vector = light_position + (0, 0, 1)
638 * and then normalize. w = 0
640 * light.EyePosition.w should be 0 for infinite lights.
642 ADD_3V(value
, eye_z
, ctx
->Light
.Light
[ln
].EyePosition
);
643 NORMALIZE_3FV(value
);
647 case STATE_POSITION_NORMALIZED
:
648 COPY_4V(value
, ctx
->Light
.Light
[ln
].EyePosition
);
649 NORMALIZE_3FV( value
);
652 _mesa_problem(ctx
, "Invalid light state in fetch_state");
656 case STATE_LIGHTMODEL_AMBIENT
:
657 COPY_4V(value
, ctx
->Light
.Model
.Ambient
);
659 case STATE_LIGHTMODEL_SCENECOLOR
:
663 for (i
= 0; i
< 3; i
++) {
664 value
[i
] = ctx
->Light
.Model
.Ambient
[i
]
665 * ctx
->Light
.Material
.Attrib
[MAT_ATTRIB_FRONT_AMBIENT
][i
]
666 + ctx
->Light
.Material
.Attrib
[MAT_ATTRIB_FRONT_EMISSION
][i
];
668 value
[3] = ctx
->Light
.Material
.Attrib
[MAT_ATTRIB_FRONT_DIFFUSE
][3];
673 for (i
= 0; i
< 3; i
++) {
674 value
[i
] = ctx
->Light
.Model
.Ambient
[i
]
675 * ctx
->Light
.Material
.Attrib
[MAT_ATTRIB_BACK_AMBIENT
][i
]
676 + ctx
->Light
.Material
.Attrib
[MAT_ATTRIB_BACK_EMISSION
][i
];
678 value
[3] = ctx
->Light
.Material
.Attrib
[MAT_ATTRIB_BACK_DIFFUSE
][3];
681 case STATE_LIGHTPROD
:
683 const GLuint ln
= (GLuint
) state
[1];
684 const GLuint face
= (GLuint
) state
[2];
686 ASSERT(face
== 0 || face
== 1);
689 for (i
= 0; i
< 3; i
++) {
690 value
[i
] = ctx
->Light
.Light
[ln
].Ambient
[i
] *
691 ctx
->Light
.Material
.Attrib
[MAT_ATTRIB_FRONT_AMBIENT
+face
][i
];
693 /* [3] = material alpha */
694 value
[3] = ctx
->Light
.Material
.Attrib
[MAT_ATTRIB_FRONT_DIFFUSE
+face
][3];
697 for (i
= 0; i
< 3; i
++) {
698 value
[i
] = ctx
->Light
.Light
[ln
].Diffuse
[i
] *
699 ctx
->Light
.Material
.Attrib
[MAT_ATTRIB_FRONT_DIFFUSE
+face
][i
];
701 /* [3] = material alpha */
702 value
[3] = ctx
->Light
.Material
.Attrib
[MAT_ATTRIB_FRONT_DIFFUSE
+face
][3];
705 for (i
= 0; i
< 3; i
++) {
706 value
[i
] = ctx
->Light
.Light
[ln
].Specular
[i
] *
707 ctx
->Light
.Material
.Attrib
[MAT_ATTRIB_FRONT_SPECULAR
+face
][i
];
709 /* [3] = material alpha */
710 value
[3] = ctx
->Light
.Material
.Attrib
[MAT_ATTRIB_FRONT_DIFFUSE
+face
][3];
713 _mesa_problem(ctx
, "Invalid lightprod state in fetch_state");
719 /* state[1] is the texture unit */
720 const GLuint unit
= (GLuint
) state
[1];
721 /* state[2] is the texgen attribute */
723 case STATE_TEXGEN_EYE_S
:
724 COPY_4V(value
, ctx
->Texture
.Unit
[unit
].EyePlaneS
);
726 case STATE_TEXGEN_EYE_T
:
727 COPY_4V(value
, ctx
->Texture
.Unit
[unit
].EyePlaneT
);
729 case STATE_TEXGEN_EYE_R
:
730 COPY_4V(value
, ctx
->Texture
.Unit
[unit
].EyePlaneR
);
732 case STATE_TEXGEN_EYE_Q
:
733 COPY_4V(value
, ctx
->Texture
.Unit
[unit
].EyePlaneQ
);
735 case STATE_TEXGEN_OBJECT_S
:
736 COPY_4V(value
, ctx
->Texture
.Unit
[unit
].ObjectPlaneS
);
738 case STATE_TEXGEN_OBJECT_T
:
739 COPY_4V(value
, ctx
->Texture
.Unit
[unit
].ObjectPlaneT
);
741 case STATE_TEXGEN_OBJECT_R
:
742 COPY_4V(value
, ctx
->Texture
.Unit
[unit
].ObjectPlaneR
);
744 case STATE_TEXGEN_OBJECT_Q
:
745 COPY_4V(value
, ctx
->Texture
.Unit
[unit
].ObjectPlaneQ
);
748 _mesa_problem(ctx
, "Invalid texgen state in fetch_state");
752 case STATE_TEXENV_COLOR
:
754 /* state[1] is the texture unit */
755 const GLuint unit
= (GLuint
) state
[1];
756 COPY_4V(value
, ctx
->Texture
.Unit
[unit
].EnvColor
);
759 case STATE_FOG_COLOR
:
760 COPY_4V(value
, ctx
->Fog
.Color
);
762 case STATE_FOG_PARAMS
:
763 value
[0] = ctx
->Fog
.Density
;
764 value
[1] = ctx
->Fog
.Start
;
765 value
[2] = ctx
->Fog
.End
;
766 value
[3] = 1.0F
/ (ctx
->Fog
.End
- ctx
->Fog
.Start
);
768 case STATE_CLIPPLANE
:
770 const GLuint plane
= (GLuint
) state
[1];
771 COPY_4V(value
, ctx
->Transform
.EyeUserPlane
[plane
]);
774 case STATE_POINT_SIZE
:
775 value
[0] = ctx
->Point
.Size
;
776 value
[1] = ctx
->Point
.MinSize
;
777 value
[2] = ctx
->Point
.MaxSize
;
778 value
[3] = ctx
->Point
.Threshold
;
780 case STATE_POINT_ATTENUATION
:
781 value
[0] = ctx
->Point
.Params
[0];
782 value
[1] = ctx
->Point
.Params
[1];
783 value
[2] = ctx
->Point
.Params
[2];
788 /* state[1] = modelview, projection, texture, etc. */
789 /* state[2] = which texture matrix or program matrix */
790 /* state[3] = first column to fetch */
791 /* state[4] = last column to fetch */
792 /* state[5] = transpose, inverse or invtrans */
794 const GLmatrix
*matrix
;
795 const enum state_index mat
= state
[1];
796 const GLuint index
= (GLuint
) state
[2];
797 const GLuint first
= (GLuint
) state
[3];
798 const GLuint last
= (GLuint
) state
[4];
799 const enum state_index modifier
= state
[5];
802 if (mat
== STATE_MODELVIEW
) {
803 matrix
= ctx
->ModelviewMatrixStack
.Top
;
805 else if (mat
== STATE_PROJECTION
) {
806 matrix
= ctx
->ProjectionMatrixStack
.Top
;
808 else if (mat
== STATE_MVP
) {
809 matrix
= &ctx
->_ModelProjectMatrix
;
811 else if (mat
== STATE_TEXTURE
) {
812 matrix
= ctx
->TextureMatrixStack
[index
].Top
;
814 else if (mat
== STATE_PROGRAM
) {
815 matrix
= ctx
->ProgramMatrixStack
[index
].Top
;
818 _mesa_problem(ctx
, "Bad matrix name in _mesa_fetch_state()");
821 if (modifier
== STATE_MATRIX_INVERSE
||
822 modifier
== STATE_MATRIX_INVTRANS
) {
823 /* Be sure inverse is up to date:
825 _math_matrix_analyse( (GLmatrix
*) matrix
);
831 if (modifier
== STATE_MATRIX_TRANSPOSE
||
832 modifier
== STATE_MATRIX_INVTRANS
) {
833 for (i
= 0, row
= first
; row
<= last
; row
++) {
834 value
[i
++] = m
[row
* 4 + 0];
835 value
[i
++] = m
[row
* 4 + 1];
836 value
[i
++] = m
[row
* 4 + 2];
837 value
[i
++] = m
[row
* 4 + 3];
841 for (i
= 0, row
= first
; row
<= last
; row
++) {
842 value
[i
++] = m
[row
+ 0];
843 value
[i
++] = m
[row
+ 4];
844 value
[i
++] = m
[row
+ 8];
845 value
[i
++] = m
[row
+ 12];
850 case STATE_DEPTH_RANGE
:
851 value
[0] = ctx
->Viewport
.Near
; /* near */
852 value
[1] = ctx
->Viewport
.Far
; /* far */
853 value
[2] = ctx
->Viewport
.Far
- ctx
->Viewport
.Near
; /* far - near */
856 case STATE_FRAGMENT_PROGRAM
:
858 /* state[1] = {STATE_ENV, STATE_LOCAL} */
859 /* state[2] = parameter index */
860 const int idx
= (int) state
[2];
863 COPY_4V(value
, ctx
->FragmentProgram
.Parameters
[idx
]);
866 COPY_4V(value
, ctx
->FragmentProgram
.Current
->Base
.LocalParams
[idx
]);
869 _mesa_problem(ctx
, "Bad state switch in _mesa_fetch_state()");
875 case STATE_VERTEX_PROGRAM
:
877 /* state[1] = {STATE_ENV, STATE_LOCAL} */
878 /* state[2] = parameter index */
879 const int idx
= (int) state
[2];
882 COPY_4V(value
, ctx
->VertexProgram
.Parameters
[idx
]);
885 COPY_4V(value
, ctx
->VertexProgram
.Current
->Base
.LocalParams
[idx
]);
888 _mesa_problem(ctx
, "Bad state switch in _mesa_fetch_state()");
897 case STATE_NORMAL_SCALE
:
898 ASSIGN_4V(value
, ctx
->_ModelViewInvScale
, 0, 0, 1);
901 _mesa_problem(ctx
, "Bad state switch in _mesa_fetch_state()");
908 _mesa_problem(ctx
, "Invalid state in _mesa_fetch_state");
915 * Loop over all the parameters in a parameter list. If the parameter
916 * is a GL state reference, look up the current value of that state
917 * variable and put it into the parameter's Value[4] array.
918 * This would be called at glBegin time when using a fragment program.
921 _mesa_load_state_parameters(GLcontext
*ctx
,
922 struct program_parameter_list
*paramList
)
929 for (i
= 0; i
< paramList
->NumParameters
; i
++) {
930 if (paramList
->Parameters
[i
].Type
== STATE
) {
931 _mesa_fetch_state(ctx
,
932 paramList
->Parameters
[i
].StateIndexes
,
933 paramList
->ParameterValues
[i
]);
940 /**********************************************************************/
942 /**********************************************************************/
946 * Bind a program (make it current)
947 * \note Called from the GL API dispatcher by both glBindProgramNV
948 * and glBindProgramARB.
951 _mesa_BindProgram(GLenum target
, GLuint id
)
953 struct program
*prog
;
954 GET_CURRENT_CONTEXT(ctx
);
955 ASSERT_OUTSIDE_BEGIN_END(ctx
);
957 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
);
959 if ((target
== GL_VERTEX_PROGRAM_NV
960 && ctx
->Extensions
.NV_vertex_program
) ||
961 (target
== GL_VERTEX_PROGRAM_ARB
962 && ctx
->Extensions
.ARB_vertex_program
)) {
963 /*** Vertex program binding ***/
964 struct vertex_program
*curProg
= ctx
->VertexProgram
.Current
;
965 if (curProg
->Base
.Id
== id
) {
966 /* binding same program - no change */
969 if (curProg
->Base
.Id
!= 0) {
970 /* decrement refcount on previously bound vertex program */
971 curProg
->Base
.RefCount
--;
972 /* and delete if refcount goes below one */
973 if (curProg
->Base
.RefCount
<= 0) {
974 /* the program ID was already removed from the hash table */
975 ctx
->Driver
.DeleteProgram(ctx
, &(curProg
->Base
));
979 else if ((target
== GL_FRAGMENT_PROGRAM_NV
980 && ctx
->Extensions
.NV_fragment_program
) ||
981 (target
== GL_FRAGMENT_PROGRAM_ARB
982 && ctx
->Extensions
.ARB_fragment_program
)) {
983 /*** Fragment program binding ***/
984 struct fragment_program
*curProg
= ctx
->FragmentProgram
.Current
;
985 if (curProg
->Base
.Id
== id
) {
986 /* binding same program - no change */
989 if (curProg
->Base
.Id
!= 0) {
990 /* decrement refcount on previously bound fragment program */
991 curProg
->Base
.RefCount
--;
992 /* and delete if refcount goes below one */
993 if (curProg
->Base
.RefCount
<= 0) {
994 /* the program ID was already removed from the hash table */
995 ctx
->Driver
.DeleteProgram(ctx
, &(curProg
->Base
));
1000 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindProgramNV/ARB(target)");
1004 /* NOTE: binding to a non-existant program is not an error.
1005 * That's supposed to be caught in glBegin.
1008 /* Bind default program */
1010 if (target
== GL_VERTEX_PROGRAM_NV
|| target
== GL_VERTEX_PROGRAM_ARB
)
1011 prog
= ctx
->Shared
->DefaultVertexProgram
;
1013 prog
= ctx
->Shared
->DefaultFragmentProgram
;
1016 /* Bind user program */
1017 prog
= (struct program
*) _mesa_HashLookup(ctx
->Shared
->Programs
, id
);
1018 if (!prog
|| prog
== &_mesa_DummyProgram
) {
1019 /* allocate a new program now */
1020 prog
= ctx
->Driver
.NewProgram(ctx
, target
, id
);
1022 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBindProgramNV/ARB");
1025 _mesa_HashInsert(ctx
->Shared
->Programs
, id
, prog
);
1027 else if (prog
->Target
!= target
) {
1028 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1029 "glBindProgramNV/ARB(target mismatch)");
1035 if (target
== GL_VERTEX_PROGRAM_NV
|| target
== GL_VERTEX_PROGRAM_ARB
) {
1036 ctx
->VertexProgram
.Current
= (struct vertex_program
*) prog
;
1038 else if (target
== GL_FRAGMENT_PROGRAM_NV
|| target
== GL_FRAGMENT_PROGRAM_ARB
) {
1039 ctx
->FragmentProgram
.Current
= (struct fragment_program
*) prog
;
1042 /* Never null pointers */
1043 ASSERT(ctx
->VertexProgram
.Current
);
1044 ASSERT(ctx
->FragmentProgram
.Current
);
1049 if (ctx
->Driver
.BindProgram
)
1050 ctx
->Driver
.BindProgram(ctx
, target
, prog
);
1055 * Delete a list of programs.
1056 * \note Not compiled into display lists.
1057 * \note Called by both glDeleteProgramsNV and glDeleteProgramsARB.
1060 _mesa_DeletePrograms(GLsizei n
, const GLuint
*ids
)
1063 GET_CURRENT_CONTEXT(ctx
);
1064 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx
);
1067 _mesa_error( ctx
, GL_INVALID_VALUE
, "glDeleteProgramsNV" );
1071 for (i
= 0; i
< n
; i
++) {
1073 struct program
*prog
= (struct program
*)
1074 _mesa_HashLookup(ctx
->Shared
->Programs
, ids
[i
]);
1075 if (prog
== &_mesa_DummyProgram
) {
1076 _mesa_HashRemove(ctx
->Shared
->Programs
, ids
[i
]);
1079 /* Unbind program if necessary */
1080 if (prog
->Target
== GL_VERTEX_PROGRAM_NV
||
1081 prog
->Target
== GL_VERTEX_STATE_PROGRAM_NV
) {
1082 if (ctx
->VertexProgram
.Current
&&
1083 ctx
->VertexProgram
.Current
->Base
.Id
== ids
[i
]) {
1084 /* unbind this currently bound program */
1085 _mesa_BindProgram(prog
->Target
, 0);
1088 else if (prog
->Target
== GL_FRAGMENT_PROGRAM_NV
||
1089 prog
->Target
== GL_FRAGMENT_PROGRAM_ARB
) {
1090 if (ctx
->FragmentProgram
.Current
&&
1091 ctx
->FragmentProgram
.Current
->Base
.Id
== ids
[i
]) {
1092 /* unbind this currently bound program */
1093 _mesa_BindProgram(prog
->Target
, 0);
1097 _mesa_problem(ctx
, "bad target in glDeleteProgramsNV");
1100 /* The ID is immediately available for re-use now */
1101 _mesa_HashRemove(ctx
->Shared
->Programs
, ids
[i
]);
1103 if (prog
->RefCount
<= 0) {
1104 ctx
->Driver
.DeleteProgram(ctx
, prog
);
1113 * Generate a list of new program identifiers.
1114 * \note Not compiled into display lists.
1115 * \note Called by both glGenProgramsNV and glGenProgramsARB.
1118 _mesa_GenPrograms(GLsizei n
, GLuint
*ids
)
1122 GET_CURRENT_CONTEXT(ctx
);
1123 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1126 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGenPrograms");
1133 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->Programs
, n
);
1135 /* Insert pointer to dummy program as placeholder */
1136 for (i
= 0; i
< (GLuint
) n
; i
++) {
1137 _mesa_HashInsert(ctx
->Shared
->Programs
, first
+ i
, &_mesa_DummyProgram
);
1140 /* Return the program names */
1141 for (i
= 0; i
< (GLuint
) n
; i
++) {
1148 * Determine if id names a vertex or fragment program.
1149 * \note Not compiled into display lists.
1150 * \note Called from both glIsProgramNV and glIsProgramARB.
1151 * \param id is the program identifier
1152 * \return GL_TRUE if id is a program, else GL_FALSE.
1154 GLboolean GLAPIENTRY
1155 _mesa_IsProgram(GLuint id
)
1157 GET_CURRENT_CONTEXT(ctx
);
1158 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1163 if (_mesa_HashLookup(ctx
->Shared
->Programs
, id
))
1171 /**********************************************************************/
1172 /* GL_MESA_program_debug extension */
1173 /**********************************************************************/
1177 GLAPI
void GLAPIENTRY
1178 glProgramCallbackMESA(GLenum target
, GLprogramcallbackMESA callback
,
1181 _mesa_ProgramCallbackMESA(target
, callback
, data
);
1186 _mesa_ProgramCallbackMESA(GLenum target
, GLprogramcallbackMESA callback
,
1189 GET_CURRENT_CONTEXT(ctx
);
1192 case GL_FRAGMENT_PROGRAM_ARB
:
1193 if (!ctx
->Extensions
.ARB_fragment_program
) {
1194 _mesa_error(ctx
, GL_INVALID_ENUM
, "glProgramCallbackMESA(target)");
1197 ctx
->FragmentProgram
.Callback
= callback
;
1198 ctx
->FragmentProgram
.CallbackData
= data
;
1200 case GL_FRAGMENT_PROGRAM_NV
:
1201 if (!ctx
->Extensions
.NV_fragment_program
) {
1202 _mesa_error(ctx
, GL_INVALID_ENUM
, "glProgramCallbackMESA(target)");
1205 ctx
->FragmentProgram
.Callback
= callback
;
1206 ctx
->FragmentProgram
.CallbackData
= data
;
1208 case GL_VERTEX_PROGRAM_ARB
: /* == GL_VERTEX_PROGRAM_NV */
1209 if (!ctx
->Extensions
.ARB_vertex_program
&&
1210 !ctx
->Extensions
.NV_vertex_program
) {
1211 _mesa_error(ctx
, GL_INVALID_ENUM
, "glProgramCallbackMESA(target)");
1214 ctx
->VertexProgram
.Callback
= callback
;
1215 ctx
->VertexProgram
.CallbackData
= data
;
1218 _mesa_error(ctx
, GL_INVALID_ENUM
, "glProgramCallbackMESA(target)");
1225 GLAPI
void GLAPIENTRY
1226 glGetProgramRegisterfvMESA(GLenum target
,
1227 GLsizei len
, const GLubyte
*registerName
,
1230 _mesa_GetProgramRegisterfvMESA(target
, len
, registerName
, v
);
1235 _mesa_GetProgramRegisterfvMESA(GLenum target
,
1236 GLsizei len
, const GLubyte
*registerName
,
1240 GET_CURRENT_CONTEXT(ctx
);
1242 /* We _should_ be inside glBegin/glEnd */
1244 if (ctx
->Driver
.CurrentExecPrimitive
== PRIM_OUTSIDE_BEGIN_END
) {
1245 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetProgramRegisterfvMESA");
1250 /* make null-terminated copy of registerName */
1251 len
= MIN2((unsigned int) len
, sizeof(reg
) - 1);
1252 _mesa_memcpy(reg
, registerName
, len
);
1256 case GL_VERTEX_PROGRAM_NV
:
1257 if (!ctx
->Extensions
.ARB_vertex_program
&&
1258 !ctx
->Extensions
.NV_vertex_program
) {
1259 _mesa_error(ctx
, GL_INVALID_ENUM
,
1260 "glGetProgramRegisterfvMESA(target)");
1263 if (!ctx
->VertexProgram
._Enabled
) {
1264 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1265 "glGetProgramRegisterfvMESA");
1268 /* GL_NV_vertex_program */
1269 if (reg
[0] == 'R') {
1271 GLint i
= _mesa_atoi(reg
+ 1);
1272 if (i
>= (GLint
)ctx
->Const
.MaxVertexProgramTemps
) {
1273 _mesa_error(ctx
, GL_INVALID_VALUE
,
1274 "glGetProgramRegisterfvMESA(registerName)");
1277 COPY_4V(v
, ctx
->VertexProgram
.Temporaries
[i
]);
1279 else if (reg
[0] == 'v' && reg
[1] == '[') {
1280 /* Vertex Input attribute */
1282 for (i
= 0; i
< ctx
->Const
.MaxVertexProgramAttribs
; i
++) {
1283 const char *name
= _mesa_nv_vertex_input_register_name(i
);
1285 sprintf(number
, "%d", i
);
1286 if (_mesa_strncmp(reg
+ 2, name
, 4) == 0 ||
1287 _mesa_strncmp(reg
+ 2, number
, _mesa_strlen(number
)) == 0) {
1288 COPY_4V(v
, ctx
->VertexProgram
.Inputs
[i
]);
1292 _mesa_error(ctx
, GL_INVALID_VALUE
,
1293 "glGetProgramRegisterfvMESA(registerName)");
1296 else if (reg
[0] == 'o' && reg
[1] == '[') {
1297 /* Vertex output attribute */
1299 /* GL_ARB_vertex_program */
1300 else if (_mesa_strncmp(reg
, "vertex.", 7) == 0) {
1304 _mesa_error(ctx
, GL_INVALID_VALUE
,
1305 "glGetProgramRegisterfvMESA(registerName)");
1309 case GL_FRAGMENT_PROGRAM_ARB
:
1310 if (!ctx
->Extensions
.ARB_fragment_program
) {
1311 _mesa_error(ctx
, GL_INVALID_ENUM
,
1312 "glGetProgramRegisterfvMESA(target)");
1315 if (!ctx
->FragmentProgram
._Enabled
) {
1316 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1317 "glGetProgramRegisterfvMESA");
1322 case GL_FRAGMENT_PROGRAM_NV
:
1323 if (!ctx
->Extensions
.NV_fragment_program
) {
1324 _mesa_error(ctx
, GL_INVALID_ENUM
,
1325 "glGetProgramRegisterfvMESA(target)");
1328 if (!ctx
->FragmentProgram
._Enabled
) {
1329 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1330 "glGetProgramRegisterfvMESA");
1333 if (reg
[0] == 'R') {
1335 GLint i
= _mesa_atoi(reg
+ 1);
1336 if (i
>= (GLint
)ctx
->Const
.MaxFragmentProgramTemps
) {
1337 _mesa_error(ctx
, GL_INVALID_VALUE
,
1338 "glGetProgramRegisterfvMESA(registerName)");
1341 COPY_4V(v
, ctx
->FragmentProgram
.Machine
.Temporaries
[i
]);
1343 else if (reg
[0] == 'f' && reg
[1] == '[') {
1344 /* Fragment input attribute */
1346 for (i
= 0; i
< ctx
->Const
.MaxFragmentProgramAttribs
; i
++) {
1347 const char *name
= _mesa_nv_fragment_input_register_name(i
);
1348 if (_mesa_strncmp(reg
+ 2, name
, 4) == 0) {
1349 COPY_4V(v
, ctx
->FragmentProgram
.Machine
.Inputs
[i
]);
1353 _mesa_error(ctx
, GL_INVALID_VALUE
,
1354 "glGetProgramRegisterfvMESA(registerName)");
1357 else if (_mesa_strcmp(reg
, "o[COLR]") == 0) {
1358 /* Fragment output color */
1359 COPY_4V(v
, ctx
->FragmentProgram
.Machine
.Outputs
[FRAG_OUTPUT_COLR
]);
1361 else if (_mesa_strcmp(reg
, "o[COLH]") == 0) {
1362 /* Fragment output color */
1363 COPY_4V(v
, ctx
->FragmentProgram
.Machine
.Outputs
[FRAG_OUTPUT_COLH
]);
1365 else if (_mesa_strcmp(reg
, "o[DEPR]") == 0) {
1366 /* Fragment output depth */
1367 COPY_4V(v
, ctx
->FragmentProgram
.Machine
.Outputs
[FRAG_OUTPUT_DEPR
]);
1370 /* try user-defined identifiers */
1371 const GLfloat
*value
= _mesa_lookup_parameter_value(
1372 ctx
->FragmentProgram
.Current
->Parameters
, -1, reg
);
1377 _mesa_error(ctx
, GL_INVALID_VALUE
,
1378 "glGetProgramRegisterfvMESA(registerName)");
1384 _mesa_error(ctx
, GL_INVALID_ENUM
,
1385 "glGetProgramRegisterfvMESA(target)");