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 */