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"
33 void r300_begin_vertex_translate(struct r300_context
*r300
)
35 struct pipe_context
*pipe
= &r300
->context
;
36 struct translate_key key
= {0};
37 struct translate_element
*te
;
38 unsigned tr_elem_index
[PIPE_MAX_ATTRIBS
] = {0};
40 struct r300_vertex_element_state
*ve
= r300
->velems
;
41 boolean vb_translated
[PIPE_MAX_ATTRIBS
] = {0};
42 void *vb_map
[PIPE_MAX_ATTRIBS
] = {0}, *out_map
;
43 struct pipe_transfer
*vb_transfer
[PIPE_MAX_ATTRIBS
] = {0}, *out_transfer
;
44 struct pipe_resource
*out_buffer
;
45 unsigned i
, num_verts
;
47 /* Initialize the translate key, i.e. the recipe how vertices should be
49 for (i
= 0; i
< ve
->count
; i
++) {
50 struct pipe_vertex_buffer
*vb
=
51 &r300
->vertex_buffer
[ve
->velem
[i
].vertex_buffer_index
];
52 enum pipe_format output_format
= ve
->hw_format
[i
];
53 unsigned output_format_size
= ve
->hw_format_size
[i
];
55 /* Check for support. */
56 if (ve
->velem
[i
].src_format
== ve
->hw_format
[i
] &&
57 (vb
->buffer_offset
+ ve
->velem
[i
].src_offset
) % 4 == 0 &&
58 vb
->stride
% 4 == 0) {
62 /* Workaround for translate: output floats instead of halfs. */
63 switch (output_format
) {
64 case PIPE_FORMAT_R16_FLOAT
:
65 output_format
= PIPE_FORMAT_R32_FLOAT
;
66 output_format_size
= 4;
68 case PIPE_FORMAT_R16G16_FLOAT
:
69 output_format
= PIPE_FORMAT_R32G32_FLOAT
;
70 output_format_size
= 8;
72 case PIPE_FORMAT_R16G16B16_FLOAT
:
73 output_format
= PIPE_FORMAT_R32G32B32_FLOAT
;
74 output_format_size
= 12;
76 case PIPE_FORMAT_R16G16B16A16_FLOAT
:
77 output_format
= PIPE_FORMAT_R32G32B32A32_FLOAT
;
78 output_format_size
= 16;
83 /* Add this vertex element. */
84 te
= &key
.element
[key
.nr_elements
];
86 te->instance_divisor;*/
87 te
->input_buffer
= ve
->velem
[i
].vertex_buffer_index
;
88 te
->input_format
= ve
->velem
[i
].src_format
;
89 te
->input_offset
= vb
->buffer_offset
+ ve
->velem
[i
].src_offset
;
90 te
->output_format
= output_format
;
91 te
->output_offset
= key
.output_stride
;
93 key
.output_stride
+= output_format_size
;
94 vb_translated
[ve
->velem
[i
].vertex_buffer_index
] = TRUE
;
95 tr_elem_index
[i
] = key
.nr_elements
;
99 /* Get a translate object. */
100 tr
= translate_cache_find(r300
->tran
.translate_cache
, &key
);
102 /* Map buffers we want to translate. */
103 for (i
= 0; i
< r300
->vertex_buffer_count
; i
++) {
104 if (vb_translated
[i
]) {
105 struct pipe_vertex_buffer
*vb
= &r300
->vertex_buffer
[i
];
107 vb_map
[i
] = pipe_buffer_map(pipe
, vb
->buffer
,
108 PIPE_TRANSFER_READ
, &vb_transfer
[i
]);
110 tr
->set_buffer(tr
, i
, vb_map
[i
], vb
->stride
, vb
->max_index
);
114 /* Create and map the output buffer. */
115 num_verts
= r300
->vertex_buffer_max_index
+ 1;
117 out_buffer
= pipe_buffer_create(&r300
->screen
->screen
,
118 PIPE_BIND_VERTEX_BUFFER
,
119 key
.output_stride
* num_verts
);
121 out_map
= pipe_buffer_map(pipe
, out_buffer
, PIPE_TRANSFER_WRITE
,
125 tr
->run(tr
, 0, num_verts
, 0, out_map
);
127 /* Unmap all buffers. */
128 for (i
= 0; i
< r300
->vertex_buffer_count
; i
++) {
129 if (vb_translated
[i
]) {
130 pipe_buffer_unmap(pipe
, r300
->vertex_buffer
[i
].buffer
,
135 pipe_buffer_unmap(pipe
, out_buffer
, out_transfer
);
137 /* Setup the new vertex buffer in the first free slot. */
138 for (i
= 0; i
< PIPE_MAX_ATTRIBS
; i
++) {
139 struct pipe_vertex_buffer
*vb
= &r300
->vertex_buffer
[i
];
142 pipe_resource_reference(&vb
->buffer
, out_buffer
);
143 vb
->buffer_offset
= 0;
144 vb
->max_index
= num_verts
- 1;
145 vb
->stride
= key
.output_stride
;
146 r300
->tran
.vb_slot
= i
;
151 /* Save and replace vertex elements. */
153 struct pipe_vertex_element new_velems
[PIPE_MAX_ATTRIBS
];
155 r300
->tran
.saved_velems
= r300
->velems
;
157 for (i
= 0; i
< ve
->count
; i
++) {
158 if (vb_translated
[ve
->velem
[i
].vertex_buffer_index
]) {
159 te
= &key
.element
[tr_elem_index
[i
]];
160 new_velems
[i
].instance_divisor
= ve
->velem
[i
].instance_divisor
;
161 new_velems
[i
].src_format
= te
->output_format
;
162 new_velems
[i
].src_offset
= te
->output_offset
;
163 new_velems
[i
].vertex_buffer_index
= r300
->tran
.vb_slot
;
165 memcpy(&new_velems
[i
], &ve
->velem
[i
],
166 sizeof(struct pipe_vertex_element
));
170 r300
->tran
.new_velems
=
171 pipe
->create_vertex_elements_state(pipe
, ve
->count
, new_velems
);
172 pipe
->bind_vertex_elements_state(pipe
, r300
->tran
.new_velems
);
175 pipe_resource_reference(&out_buffer
, NULL
);
178 void r300_end_vertex_translate(struct r300_context
*r300
)
180 struct pipe_context
*pipe
= &r300
->context
;
182 /* Restore vertex elements. */
183 pipe
->bind_vertex_elements_state(pipe
, r300
->tran
.saved_velems
);
184 pipe
->delete_vertex_elements_state(pipe
, r300
->tran
.new_velems
);
186 /* Delete the now-unused VBO. */
187 pipe_resource_reference(&r300
->vertex_buffer
[r300
->tran
.vb_slot
].buffer
,
191 static void r300_shorten_ubyte_elts(struct r300_context
* r300
,
192 struct pipe_resource
** elts
,
197 struct pipe_context
* context
= &r300
->context
;
198 struct pipe_screen
* screen
= r300
->context
.screen
;
199 struct pipe_resource
* new_elts
;
200 unsigned char *in_map
;
201 unsigned short *out_map
;
202 struct pipe_transfer
*src_transfer
, *dst_transfer
;
205 new_elts
= pipe_buffer_create(screen
,
206 PIPE_BIND_INDEX_BUFFER
,
209 in_map
= pipe_buffer_map(context
, *elts
, PIPE_TRANSFER_READ
, &src_transfer
);
210 out_map
= pipe_buffer_map(context
, new_elts
, PIPE_TRANSFER_WRITE
, &dst_transfer
);
214 for (i
= 0; i
< count
; i
++) {
215 *out_map
= (unsigned short)(*in_map
+ index_bias
);
220 pipe_buffer_unmap(context
, *elts
, src_transfer
);
221 pipe_buffer_unmap(context
, new_elts
, dst_transfer
);
226 static void r300_rebuild_ushort_elts(struct r300_context
*r300
,
227 struct pipe_resource
**elts
,
229 unsigned start
, unsigned count
)
231 struct pipe_context
*context
= &r300
->context
;
232 struct pipe_transfer
*in_transfer
= NULL
;
233 struct pipe_transfer
*out_transfer
= NULL
;
234 struct pipe_resource
*new_elts
;
235 unsigned short *in_map
;
236 unsigned short *out_map
;
239 new_elts
= pipe_buffer_create(context
->screen
,
240 PIPE_BIND_INDEX_BUFFER
,
243 in_map
= pipe_buffer_map(context
, *elts
,
244 PIPE_TRANSFER_READ
, &in_transfer
);
245 out_map
= pipe_buffer_map(context
, new_elts
,
246 PIPE_TRANSFER_WRITE
, &out_transfer
);
249 for (i
= 0; i
< count
; i
++) {
250 *out_map
= (unsigned short)(*in_map
+ index_bias
);
255 pipe_buffer_unmap(context
, *elts
, in_transfer
);
256 pipe_buffer_unmap(context
, new_elts
, out_transfer
);
261 static void r300_rebuild_uint_elts(struct r300_context
*r300
,
262 struct pipe_resource
**elts
,
264 unsigned start
, unsigned count
)
266 struct pipe_context
*context
= &r300
->context
;
267 struct pipe_transfer
*in_transfer
= NULL
;
268 struct pipe_transfer
*out_transfer
= NULL
;
269 struct pipe_resource
*new_elts
;
270 unsigned int *in_map
;
271 unsigned int *out_map
;
274 new_elts
= pipe_buffer_create(context
->screen
,
275 PIPE_BIND_INDEX_BUFFER
,
278 in_map
= pipe_buffer_map(context
, *elts
,
279 PIPE_TRANSFER_READ
, &in_transfer
);
280 out_map
= pipe_buffer_map(context
, new_elts
,
281 PIPE_TRANSFER_WRITE
, &out_transfer
);
284 for (i
= 0; i
< count
; i
++) {
285 *out_map
= (unsigned int)(*in_map
+ index_bias
);
290 pipe_buffer_unmap(context
, *elts
, in_transfer
);
291 pipe_buffer_unmap(context
, new_elts
, out_transfer
);
296 void r300_translate_index_buffer(struct r300_context
*r300
,
297 struct pipe_resource
**index_buffer
,
298 unsigned *index_size
, unsigned index_offset
,
299 unsigned *start
, unsigned count
)
301 switch (*index_size
) {
303 r300_shorten_ubyte_elts(r300
, index_buffer
, index_offset
, *start
, count
);
309 if (*start
% 2 != 0 || index_offset
) {
310 r300_rebuild_ushort_elts(r300
, index_buffer
, index_offset
, *start
, count
);
317 r300_rebuild_uint_elts(r300
, index_buffer
, index_offset
, *start
, count
);