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 **************************************************************************/
30 * Keith Whitwell <keith@tungstengraphics.com>
34 #include "main/imports.h"
35 #include "shader/prog_parameter.h"
36 #include "shader/prog_print.h"
38 #include "pipe/p_context.h"
39 #include "pipe/p_defines.h"
40 #include "util/u_inlines.h"
43 #include "st_context.h"
45 #include "st_atom_constbuf.h"
46 #include "st_program.h"
47 #include "st_inlines.h"
51 * Pass the given program parameters to the graphics pipe as a
53 * \param shader_type either PIPE_SHADER_VERTEX or PIPE_SHADER_FRAGMENT
55 void st_upload_constants( struct st_context
*st
,
56 struct gl_program_parameter_list
*params
,
59 struct pipe_context
*pipe
= st
->pipe
;
60 struct pipe_buffer
**cbuf
= &st
->state
.constants
[shader_type
];
62 assert(shader_type
== PIPE_SHADER_VERTEX
||
63 shader_type
== PIPE_SHADER_FRAGMENT
);
65 /* update constants */
66 if (params
&& params
->NumParameters
) {
67 const uint paramBytes
= params
->NumParameters
* sizeof(GLfloat
) * 4;
69 _mesa_load_state_parameters(st
->ctx
, params
);
71 /* We always need to get a new buffer, to keep the drivers simple and
72 * avoid gratuitous rendering synchronization.
74 pipe_buffer_reference(cbuf
, NULL
);
75 *cbuf
= pipe_buffer_create(pipe
->screen
, 16,
76 PIPE_BUFFER_USAGE_CONSTANT
,
79 if (ST_DEBUG
& DEBUG_CONSTANTS
) {
80 debug_printf("%s(shader=%d, numParams=%d, stateFlags=0x%x)\n",
81 __FUNCTION__
, shader_type
, params
->NumParameters
,
83 _mesa_print_parameter_list(params
);
86 /* load Mesa constants into the constant buffer */
88 st_no_flush_pipe_buffer_write(st
, *cbuf
,
90 params
->ParameterValues
);
92 st
->pipe
->set_constant_buffer(st
->pipe
, shader_type
, 0, *cbuf
);
95 st
->constants
.tracked_state
[shader_type
].dirty
.mesa
= 0x0;
103 static void update_vs_constants(struct st_context
*st
)
105 struct st_vertex_program
*vp
= st
->vp
;
106 struct gl_program_parameter_list
*params
= vp
->Base
.Base
.Parameters
;
108 st_upload_constants( st
, params
, PIPE_SHADER_VERTEX
);
112 const struct st_tracked_state st_update_vs_constants
= {
113 "st_update_vs_constants", /* name */
115 (_NEW_PROGRAM
| _NEW_PROGRAM_CONSTANTS
), /* mesa */
116 ST_NEW_VERTEX_PROGRAM
, /* st */
118 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
);
135 const struct st_tracked_state st_update_fs_constants
= {
136 "st_update_fs_constants", /* name */
138 (_NEW_PROGRAM
| _NEW_PROGRAM_CONSTANTS
), /* mesa */
139 ST_NEW_FRAGMENT_PROGRAM
, /* st */
141 update_fs_constants
/* update */