1 /**************************************************************************
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
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:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
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.
26 **************************************************************************/
29 * Keith Whitwell <keith@tungstengraphics.com>
33 #include "main/imports.h"
34 #include "shader/prog_parameter.h"
35 #include "shader/prog_print.h"
37 #include "pipe/p_context.h"
38 #include "pipe/p_defines.h"
39 #include "pipe/p_inlines.h"
41 #include "st_context.h"
43 #include "st_atom_constbuf.h"
44 #include "st_program.h"
48 * Pass the given program parameters to the graphics pipe as a
50 * \param id either PIPE_SHADER_VERTEX or PIPE_SHADER_FRAGMENT
52 void st_upload_constants( struct st_context
*st
,
53 struct gl_program_parameter_list
*params
,
56 struct pipe_context
*pipe
= st
->pipe
;
57 struct pipe_constant_buffer
*cbuf
= &st
->state
.constants
[id
];
59 assert(id
== PIPE_SHADER_VERTEX
|| id
== PIPE_SHADER_FRAGMENT
);
61 /* update constants */
62 if (params
&& params
->NumParameters
) {
63 const uint paramBytes
= params
->NumParameters
* sizeof(GLfloat
) * 4;
65 /* Update our own dependency flags. This works because this
66 * function will also be called whenever the program changes.
68 st
->constants
.tracked_state
[id
].dirty
.mesa
=
69 (params
->StateFlags
| _NEW_PROGRAM
);
71 _mesa_load_state_parameters(st
->ctx
, params
);
73 /* We always need to get a new buffer, to keep the drivers simple and
74 * avoid gratuitous rendering synchronization.
76 pipe_buffer_reference(pipe
->screen
, &cbuf
->buffer
, NULL
);
77 cbuf
->buffer
= pipe_buffer_create(pipe
->screen
, 16, PIPE_BUFFER_USAGE_CONSTANT
,
82 printf("%s(shader=%d, numParams=%d, stateFlags=0x%x)\n",
83 __FUNCTION__
, id
, params
->NumParameters
, params
->StateFlags
);
84 _mesa_print_parameter_list(params
);
87 /* load Mesa constants into the constant buffer */
89 void *map
= pipe_buffer_map(pipe
->screen
, cbuf
->buffer
,
90 PIPE_BUFFER_USAGE_CPU_WRITE
);
91 memcpy(map
, params
->ParameterValues
, paramBytes
);
92 pipe_buffer_unmap(pipe
->screen
, cbuf
->buffer
);
95 cbuf
->size
= paramBytes
;
97 st
->pipe
->set_constant_buffer(st
->pipe
, id
, 0, cbuf
);
100 st
->constants
.tracked_state
[id
].dirty
.mesa
= 0;
101 // st->pipe->set_constant_buffer(st->pipe, id, 0, NULL);
107 static void update_vs_constants(struct st_context
*st
)
109 struct st_vertex_program
*vp
= st
->vp
;
110 struct gl_program_parameter_list
*params
= vp
->Base
.Base
.Parameters
;
112 st_upload_constants( st
, params
, PIPE_SHADER_VERTEX
);
115 const struct st_tracked_state st_update_vs_constants
= {
116 "st_update_vs_constants", /* name */
118 0, /* set dynamically above */ /* mesa */
119 ST_NEW_VERTEX_PROGRAM
, /* st */
121 update_vs_constants
/* update */
126 static void update_fs_constants(struct st_context
*st
)
128 struct st_fragment_program
*fp
= st
->fp
;
129 struct gl_program_parameter_list
*params
= fp
->Base
.Base
.Parameters
;
131 st_upload_constants( st
, params
, PIPE_SHADER_FRAGMENT
);
134 const struct st_tracked_state st_update_fs_constants
= {
135 "st_update_fs_constants", /* name */
137 0, /* set dynamically above */ /* mesa */
138 ST_NEW_FRAGMENT_PROGRAM
, /* st */
140 update_fs_constants
/* update */