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 "program/prog_parameter.h"
36 #include "program/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"
50 * Pass the given program parameters to the graphics pipe as a
52 * \param shader_type either PIPE_SHADER_VERTEX or PIPE_SHADER_FRAGMENT
54 void st_upload_constants( struct st_context
*st
,
55 struct gl_program_parameter_list
*params
,
58 struct pipe_context
*pipe
= st
->pipe
;
60 assert(shader_type
== PIPE_SHADER_VERTEX
||
61 shader_type
== PIPE_SHADER_FRAGMENT
||
62 shader_type
== PIPE_SHADER_GEOMETRY
);
64 /* update constants */
65 if (params
&& params
->NumParameters
) {
66 struct pipe_constant_buffer cb
;
67 const uint paramBytes
= params
->NumParameters
* sizeof(GLfloat
) * 4;
69 /* Update the constants which come from fixed-function state, such as
70 * transformation matrices, fog factors, etc. The rest of the values in
71 * the parameters list are explicitly set by the user with glUniform,
72 * glProgramParameter(), etc.
74 _mesa_load_state_parameters(st
->ctx
, params
);
76 /* We always need to get a new buffer, to keep the drivers simple and
77 * avoid gratuitous rendering synchronization.
78 * Let's use a user buffer to avoid an unnecessary copy.
80 cb
.buffer
= pipe_user_buffer_create(pipe
->screen
,
81 params
->ParameterValues
,
83 PIPE_BIND_CONSTANT_BUFFER
);
85 cb
.buffer_size
= paramBytes
;
87 if (ST_DEBUG
& DEBUG_CONSTANTS
) {
88 debug_printf("%s(shader=%d, numParams=%d, stateFlags=0x%x)\n",
89 __FUNCTION__
, shader_type
, params
->NumParameters
,
91 _mesa_print_parameter_list(params
);
94 st
->pipe
->set_constant_buffer(st
->pipe
, shader_type
, 0, &cb
);
95 pipe_resource_reference(&cb
.buffer
, NULL
);
97 st
->state
.constants
[shader_type
].ptr
= params
->ParameterValues
;
98 st
->state
.constants
[shader_type
].size
= paramBytes
;
100 else if (st
->state
.constants
[shader_type
].ptr
) {
101 st
->state
.constants
[shader_type
].ptr
= NULL
;
102 st
->state
.constants
[shader_type
].size
= 0;
103 st
->pipe
->set_constant_buffer(st
->pipe
, shader_type
, 0, NULL
);
111 static void update_vs_constants(struct st_context
*st
)
113 struct st_vertex_program
*vp
= st
->vp
;
114 struct gl_program_parameter_list
*params
= vp
->Base
.Base
.Parameters
;
116 st_upload_constants( st
, params
, PIPE_SHADER_VERTEX
);
120 const struct st_tracked_state st_update_vs_constants
= {
121 "st_update_vs_constants", /* name */
123 (_NEW_PROGRAM
| _NEW_PROGRAM_CONSTANTS
), /* mesa */
124 ST_NEW_VERTEX_PROGRAM
, /* st */
126 update_vs_constants
/* update */
134 static void update_fs_constants(struct st_context
*st
)
136 struct st_fragment_program
*fp
= st
->fp
;
137 struct gl_program_parameter_list
*params
= fp
->Base
.Base
.Parameters
;
139 st_upload_constants( st
, params
, PIPE_SHADER_FRAGMENT
);
143 const struct st_tracked_state st_update_fs_constants
= {
144 "st_update_fs_constants", /* name */
146 (_NEW_PROGRAM
| _NEW_PROGRAM_CONSTANTS
), /* mesa */
147 ST_NEW_FRAGMENT_PROGRAM
, /* st */
149 update_fs_constants
/* update */
154 static void update_gs_constants(struct st_context
*st
)
156 struct st_geometry_program
*gp
= st
->gp
;
157 struct gl_program_parameter_list
*params
;
160 params
= gp
->Base
.Base
.Parameters
;
161 st_upload_constants( st
, params
, PIPE_SHADER_GEOMETRY
);
165 const struct st_tracked_state st_update_gs_constants
= {
166 "st_update_gs_constants", /* name */
168 (_NEW_PROGRAM
| _NEW_PROGRAM_CONSTANTS
), /* mesa */
169 ST_NEW_GEOMETRY_PROGRAM
, /* st */
171 update_gs_constants
/* update */