2 * Copyright 2010 Marek Olšák <maraeo@gmail.com>
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 * on the rights to use, copy, modify, merge, publish, distribute, sub
8 * license, and/or sell copies of the Software, and to permit persons to whom
9 * the 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 NON-INFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
21 * USE OR OTHER DEALINGS IN THE SOFTWARE. */
24 * The functions below translate vertex and index buffers to the layout
25 * compatible with the hardware, so that all vertex and index fetches are
26 * DWORD-aligned and all used vertex and index formats are supported.
27 * For indices, an optional index offset is added to each index.
30 #include "r300_context.h"
31 #include "translate/translate.h"
32 #include "util/u_index_modify.h"
33 #include "util/u_upload_mgr.h"
35 void r300_begin_vertex_translate(struct r300_context
*r300
,
36 int min_index
, int max_index
)
38 struct pipe_context
*pipe
= &r300
->context
;
39 struct translate_key key
= {0};
40 struct translate_element
*te
;
41 unsigned tr_elem_index
[PIPE_MAX_ATTRIBS
] = {0};
43 struct r300_vertex_element_state
*ve
= r300
->velems
;
44 boolean vb_translated
[PIPE_MAX_ATTRIBS
] = {0};
45 uint8_t *vb_map
[PIPE_MAX_ATTRIBS
] = {0}, *out_map
;
46 struct pipe_transfer
*vb_transfer
[PIPE_MAX_ATTRIBS
] = {0};
47 struct pipe_resource
*out_buffer
= NULL
;
48 unsigned i
, num_verts
, out_offset
;
49 struct pipe_vertex_element new_velems
[PIPE_MAX_ATTRIBS
];
52 /* Initialize the translate key, i.e. the recipe how vertices should be
54 for (i
= 0; i
< ve
->count
; i
++) {
55 struct pipe_vertex_buffer
*vb
=
56 &r300
->vertex_buffer
[ve
->velem
[i
].vertex_buffer_index
];
57 enum pipe_format output_format
= ve
->hw_format
[i
];
58 unsigned output_format_size
= ve
->hw_format_size
[i
];
60 /* Check for support. */
61 if (ve
->velem
[i
].src_format
== ve
->hw_format
[i
] &&
62 /* These two are r300-specific. */
63 (vb
->buffer_offset
+ ve
->velem
[i
].src_offset
) % 4 == 0 &&
64 vb
->stride
% 4 == 0) {
68 /* Workaround for translate: output floats instead of halfs. */
69 switch (output_format
) {
70 case PIPE_FORMAT_R16_FLOAT
:
71 output_format
= PIPE_FORMAT_R32_FLOAT
;
72 output_format_size
= 4;
74 case PIPE_FORMAT_R16G16_FLOAT
:
75 output_format
= PIPE_FORMAT_R32G32_FLOAT
;
76 output_format_size
= 8;
78 case PIPE_FORMAT_R16G16B16_FLOAT
:
79 output_format
= PIPE_FORMAT_R32G32B32_FLOAT
;
80 output_format_size
= 12;
82 case PIPE_FORMAT_R16G16B16A16_FLOAT
:
83 output_format
= PIPE_FORMAT_R32G32B32A32_FLOAT
;
84 output_format_size
= 16;
89 /* Add this vertex element. */
90 te
= &key
.element
[key
.nr_elements
];
92 te->instance_divisor;*/
93 te
->input_buffer
= ve
->velem
[i
].vertex_buffer_index
;
94 te
->input_format
= ve
->velem
[i
].src_format
;
95 te
->input_offset
= ve
->velem
[i
].src_offset
;
96 te
->output_format
= output_format
;
97 te
->output_offset
= key
.output_stride
;
99 key
.output_stride
+= output_format_size
;
100 vb_translated
[ve
->velem
[i
].vertex_buffer_index
] = TRUE
;
101 tr_elem_index
[i
] = key
.nr_elements
;
105 /* Get a translate object. */
106 tr
= translate_cache_find(r300
->tran
.translate_cache
, &key
);
108 /* Map buffers we want to translate. */
109 for (i
= 0; i
< r300
->vertex_buffer_count
; i
++) {
110 if (vb_translated
[i
]) {
111 struct pipe_vertex_buffer
*vb
= &r300
->vertex_buffer
[i
];
113 vb_map
[i
] = pipe_buffer_map(pipe
, vb
->buffer
,
114 PIPE_TRANSFER_READ
, &vb_transfer
[i
]);
116 tr
->set_buffer(tr
, i
,
117 vb_map
[i
] + vb
->buffer_offset
+ vb
->stride
* min_index
,
122 /* Create and map the output buffer. */
123 num_verts
= max_index
+ 1 - min_index
;
125 u_upload_alloc(r300
->upload_vb
,
126 key
.output_stride
* min_index
,
127 key
.output_stride
* num_verts
,
128 &out_offset
, &out_buffer
, &flushed
,
131 out_offset
-= key
.output_stride
* min_index
;
134 tr
->run(tr
, 0, num_verts
, 0, out_map
);
136 /* Unmap all buffers. */
137 for (i
= 0; i
< r300
->vertex_buffer_count
; i
++) {
138 if (vb_translated
[i
]) {
139 pipe_buffer_unmap(pipe
, vb_transfer
[i
]);
143 /* Setup the new vertex buffer in the first free slot. */
144 r300
->tran
.vb_slot
= ~0;
145 for (i
= 0; i
< PIPE_MAX_ATTRIBS
; i
++) {
146 if (!r300
->vertex_buffer
[i
].buffer
) {
147 r300
->tran
.vb_slot
= i
;
149 if (i
>= r300
->vertex_buffer_count
) {
150 r300
->real_vertex_buffer_count
= i
+1;
154 r300
->validate_buffers
= TRUE
;
155 r300
->vertex_arrays_dirty
= TRUE
;
160 if (r300
->tran
.vb_slot
!= ~0) {
161 /* Setup the new vertex buffer. */
162 pipe_resource_reference(&r300
->real_vertex_buffer
[r300
->tran
.vb_slot
], out_buffer
);
163 r300
->vertex_buffer
[r300
->tran
.vb_slot
].buffer_offset
= out_offset
;
164 r300
->vertex_buffer
[r300
->tran
.vb_slot
].stride
= key
.output_stride
;
166 /* Setup new vertex elements. */
167 for (i
= 0; i
< ve
->count
; i
++) {
168 if (vb_translated
[ve
->velem
[i
].vertex_buffer_index
]) {
169 te
= &key
.element
[tr_elem_index
[i
]];
170 new_velems
[i
].instance_divisor
= ve
->velem
[i
].instance_divisor
;
171 new_velems
[i
].src_format
= te
->output_format
;
172 new_velems
[i
].src_offset
= te
->output_offset
;
173 new_velems
[i
].vertex_buffer_index
= r300
->tran
.vb_slot
;
175 memcpy(&new_velems
[i
], &ve
->velem
[i
],
176 sizeof(struct pipe_vertex_element
));
180 r300
->tran
.saved_velems
= r300
->velems
;
181 r300
->tran
.new_velems
=
182 pipe
->create_vertex_elements_state(pipe
, ve
->count
, new_velems
);
183 pipe
->bind_vertex_elements_state(pipe
, r300
->tran
.new_velems
);
186 pipe_resource_reference(&out_buffer
, NULL
);
189 void r300_end_vertex_translate(struct r300_context
*r300
)
191 struct pipe_context
*pipe
= &r300
->context
;
193 if (r300
->tran
.new_velems
== NULL
) {
197 /* Restore vertex elements. */
198 pipe
->bind_vertex_elements_state(pipe
, r300
->tran
.saved_velems
);
199 r300
->tran
.saved_velems
= NULL
;
200 pipe
->delete_vertex_elements_state(pipe
, r300
->tran
.new_velems
);
201 r300
->tran
.new_velems
= NULL
;
203 /* Delete the now-unused VBO. */
204 pipe_resource_reference(&r300
->real_vertex_buffer
[r300
->tran
.vb_slot
], NULL
);
205 r300
->real_vertex_buffer_count
= r300
->vertex_buffer_count
;
208 void r300_translate_index_buffer(struct r300_context
*r300
,
209 struct pipe_resource
**index_buffer
,
210 unsigned *index_size
, unsigned index_offset
,
211 unsigned *start
, unsigned count
)
213 struct pipe_resource
*out_buffer
= NULL
;
218 switch (*index_size
) {
220 u_upload_alloc(r300
->upload_ib
, 0, count
* 2,
221 &out_offset
, &out_buffer
, &flushed
, &ptr
);
223 util_shorten_ubyte_elts_to_userptr(
224 &r300
->context
, *index_buffer
, index_offset
,
227 pipe_resource_reference(index_buffer
, out_buffer
);
229 *start
= out_offset
/ 2;
230 r300
->validate_buffers
= TRUE
;
235 u_upload_alloc(r300
->upload_ib
, 0, count
* 2,
236 &out_offset
, &out_buffer
, &flushed
, &ptr
);
238 util_rebuild_ushort_elts_to_userptr(&r300
->context
, *index_buffer
,
239 index_offset
, *start
,
242 pipe_resource_reference(index_buffer
, out_buffer
);
243 *start
= out_offset
/ 2;
244 r300
->validate_buffers
= TRUE
;
250 u_upload_alloc(r300
->upload_ib
, 0, count
* 4,
251 &out_offset
, &out_buffer
, &flushed
, &ptr
);
253 util_rebuild_uint_elts_to_userptr(&r300
->context
, *index_buffer
,
254 index_offset
, *start
,
257 pipe_resource_reference(index_buffer
, out_buffer
);
258 *start
= out_offset
/ 4;
259 r300
->validate_buffers
= TRUE
;