2 * Copyright © 2012 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
25 * @file gen8_sol_state.c
27 * Controls the stream output logic (SOL) stage of the gen8 hardware, which is
28 * used to implement GL_EXT_transform_feedback.
31 #include "brw_context.h"
32 #include "brw_state.h"
33 #include "brw_defines.h"
34 #include "intel_batchbuffer.h"
35 #include "intel_buffer_objects.h"
36 #include "main/transformfeedback.h"
39 gen8_upload_3dstate_so_buffers(struct brw_context
*brw
)
41 struct gl_context
*ctx
= &brw
->ctx
;
42 /* BRW_NEW_TRANSFORM_FEEDBACK */
43 struct gl_transform_feedback_object
*xfb_obj
=
44 ctx
->TransformFeedback
.CurrentObject
;
45 struct brw_transform_feedback_object
*brw_obj
=
46 (struct brw_transform_feedback_object
*) xfb_obj
;
47 uint32_t mocs_wb
= brw
->gen
>= 9 ? SKL_MOCS_WB
: BDW_MOCS_WB
;
49 /* Set up the up to 4 output buffers. These are the ranges defined in the
50 * gl_transform_feedback_object.
52 for (int i
= 0; i
< 4; i
++) {
53 struct intel_buffer_object
*bufferobj
=
54 intel_buffer_object(xfb_obj
->Buffers
[i
]);
58 OUT_BATCH(_3DSTATE_SO_BUFFER
<< 16 | (8 - 2));
59 OUT_BATCH((i
<< SO_BUFFER_INDEX_SHIFT
));
70 uint32_t start
= xfb_obj
->Offset
[i
];
71 assert(start
% 4 == 0);
72 uint32_t end
= ALIGN(start
+ xfb_obj
->Size
[i
], 4);
74 intel_bufferobj_buffer(brw
, bufferobj
, start
, end
- start
);
75 assert(end
<= bo
->size
);
78 OUT_BATCH(_3DSTATE_SO_BUFFER
<< 16 | (8 - 2));
79 OUT_BATCH(GEN8_SO_BUFFER_ENABLE
| (i
<< SO_BUFFER_INDEX_SHIFT
) |
80 GEN8_SO_BUFFER_OFFSET_WRITE_ENABLE
|
81 GEN8_SO_BUFFER_OFFSET_ADDRESS_ENABLE
|
83 OUT_RELOC64(bo
, I915_GEM_DOMAIN_RENDER
, I915_GEM_DOMAIN_RENDER
, start
);
84 OUT_BATCH(xfb_obj
->Size
[i
] / 4 - 1);
85 OUT_RELOC64(brw_obj
->offset_bo
,
86 I915_GEM_DOMAIN_INSTRUCTION
, I915_GEM_DOMAIN_INSTRUCTION
,
87 i
* sizeof(uint32_t));
88 if (brw_obj
->zero_offsets
)
89 OUT_BATCH(0); /* Zero out the offset and write that to offset_bo */
91 OUT_BATCH(0xFFFFFFFF); /* Use offset_bo as the "Stream Offset." */
94 brw_obj
->zero_offsets
= false;