2 Copyright (C) Intel Corp. 2006. All Rights Reserved.
3 Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
4 develop this 3D driver.
6 Permission is hereby granted, free of charge, to any person obtaining
7 a 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, sublicense, 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
16 portions of the Software.
18 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
19 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
21 IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
22 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
23 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
24 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **********************************************************************/
29 * Keith Whitwell <keith@tungstengraphics.com>
32 #include "main/mtypes.h"
33 #include "main/texstore.h"
34 #include "shader/prog_parameter.h"
36 #include "brw_context.h"
37 #include "brw_state.h"
38 #include "brw_defines.h"
40 /* Creates a new VS constant buffer reflecting the current VS program's
41 * constants, if needed by the VS program.
43 * Otherwise, constants go through the CURBEs using the brw_constant_buffer
47 brw_vs_update_constant_buffer(struct brw_context
*brw
)
49 struct intel_context
*intel
= &brw
->intel
;
50 struct brw_vertex_program
*vp
=
51 (struct brw_vertex_program
*) brw
->vertex_program
;
52 const struct gl_program_parameter_list
*params
= vp
->program
.Base
.Parameters
;
53 const int size
= params
->NumParameters
* 4 * sizeof(GLfloat
);
54 drm_intel_bo
*const_buffer
;
57 /* BRW_NEW_VERTEX_PROGRAM */
58 if (!vp
->use_const_buffer
)
61 const_buffer
= drm_intel_bo_alloc(intel
->bufmgr
, "vp_const_buffer",
64 /* _NEW_PROGRAM_CONSTANTS */
66 /* Updates the ParamaterValues[i] pointers for all parameters of the
67 * basic type of PROGRAM_STATE_VAR.
69 _mesa_load_state_parameters(&brw
->intel
.ctx
, vp
->program
.Base
.Parameters
);
71 intel_bo_map_gtt_preferred(intel
, const_buffer
, GL_TRUE
);
72 for (i
= 0; i
< params
->NumParameters
; i
++) {
73 memcpy(const_buffer
->virtual + i
* 4 * sizeof(float),
74 params
->ParameterValues
[i
],
77 intel_bo_unmap_gtt_preferred(intel
, const_buffer
);
83 * Update the surface state for a VS constant buffer.
85 * Sets brw->vs.surf_bo[surf] and brw->vp->const_buffer.
88 brw_update_vs_constant_surface( GLcontext
*ctx
,
91 struct brw_context
*brw
= brw_context(ctx
);
92 struct brw_surface_key key
;
93 struct brw_vertex_program
*vp
=
94 (struct brw_vertex_program
*) brw
->vertex_program
;
95 const struct gl_program_parameter_list
*params
= vp
->program
.Base
.Parameters
;
99 /* If we're in this state update atom, we need to update VS constants, so
100 * free the old buffer and create a new one for the new contents.
102 dri_bo_unreference(vp
->const_buffer
);
103 vp
->const_buffer
= brw_vs_update_constant_buffer(brw
);
105 /* If there's no constant buffer, then no surface BO is needed to point at
108 if (vp
->const_buffer
== 0) {
109 drm_intel_bo_unreference(brw
->vs
.surf_bo
[surf
]);
110 brw
->vs
.surf_bo
[surf
] = NULL
;
114 memset(&key
, 0, sizeof(key
));
116 key
.format
= MESA_FORMAT_RGBA_FLOAT32
;
117 key
.internal_format
= GL_RGBA
;
118 key
.bo
= vp
->const_buffer
;
119 key
.depthmode
= GL_NONE
;
120 key
.pitch
= params
->NumParameters
;
121 key
.width
= params
->NumParameters
;
127 printf("%s:\n", __FUNCTION__);
128 printf(" width %d height %d depth %d cpp %d pitch %d\n",
129 key.width, key.height, key.depth, key.cpp, key.pitch);
132 drm_intel_bo_unreference(brw
->vs
.surf_bo
[surf
]);
133 brw
->vs
.surf_bo
[surf
] = brw_search_cache(&brw
->surface_cache
,
136 &key
.bo
, key
.bo
? 1 : 0,
138 if (brw
->vs
.surf_bo
[surf
] == NULL
) {
139 brw
->vs
.surf_bo
[surf
] = brw_create_constant_surface(brw
, &key
);
145 * Constructs the binding table for the VS surface state.
148 brw_vs_get_binding_table(struct brw_context
*brw
)
152 bind_bo
= brw_search_cache(&brw
->surface_cache
, BRW_SS_SURF_BIND
,
154 brw
->vs
.surf_bo
, BRW_VS_MAX_SURF
,
157 if (bind_bo
== NULL
) {
158 GLuint data_size
= BRW_VS_MAX_SURF
* sizeof(GLuint
);
159 uint32_t *data
= malloc(data_size
);
162 for (i
= 0; i
< BRW_VS_MAX_SURF
; i
++)
163 if (brw
->vs
.surf_bo
[i
])
164 data
[i
] = brw
->vs
.surf_bo
[i
]->offset
;
168 bind_bo
= brw_upload_cache( &brw
->surface_cache
, BRW_SS_SURF_BIND
,
170 brw
->vs
.surf_bo
, BRW_VS_MAX_SURF
,
174 /* Emit binding table relocations to surface state */
175 for (i
= 0; i
< BRW_VS_MAX_SURF
; i
++) {
176 if (brw
->vs
.surf_bo
[i
] != NULL
) {
177 /* The presumed offsets were set in the data values for
180 drm_intel_bo_emit_reloc(bind_bo
, i
* 4,
181 brw
->vs
.surf_bo
[i
], 0,
182 I915_GEM_DOMAIN_INSTRUCTION
, 0);
193 * Vertex shader surfaces (constant buffer).
195 * This consumes the state updates for the constant buffer needing
196 * to be updated, and produces BRW_NEW_NR_VS_SURFACES for the VS unit and
197 * CACHE_NEW_SURF_BIND for the binding table upload.
199 static void prepare_vs_surfaces(struct brw_context
*brw
)
201 GLcontext
*ctx
= &brw
->intel
.ctx
;
205 brw_update_vs_constant_surface(ctx
, SURF_INDEX_VERT_CONST_BUFFER
);
207 for (i
= 0; i
< BRW_VS_MAX_SURF
; i
++) {
208 if (brw
->vs
.surf_bo
[i
] != NULL
) {
213 if (brw
->vs
.nr_surfaces
!= nr_surfaces
) {
214 brw
->state
.dirty
.brw
|= BRW_NEW_NR_VS_SURFACES
;
215 brw
->vs
.nr_surfaces
= nr_surfaces
;
218 /* Note that we don't end up updating the bind_bo if we don't have a
219 * surface to be pointing at. This should be relatively harmless, as it
220 * just slightly increases our working set size.
222 if (brw
->vs
.nr_surfaces
!= 0) {
223 dri_bo_unreference(brw
->vs
.bind_bo
);
224 brw
->vs
.bind_bo
= brw_vs_get_binding_table(brw
);
228 const struct brw_tracked_state brw_vs_surfaces
= {
230 .mesa
= (_NEW_PROGRAM_CONSTANTS
),
231 .brw
= (BRW_NEW_VERTEX_PROGRAM
),
234 .prepare
= prepare_vs_surfaces
,