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"
34 void r300_begin_vertex_translate(struct r300_context
*r300
)
36 struct pipe_context
*pipe
= &r300
->context
;
37 struct translate_key key
= {0};
38 struct translate_element
*te
;
39 unsigned tr_elem_index
[PIPE_MAX_ATTRIBS
] = {0};
41 struct r300_vertex_element_state
*ve
= r300
->velems
;
42 boolean vb_translated
[PIPE_MAX_ATTRIBS
] = {0};
43 void *vb_map
[PIPE_MAX_ATTRIBS
] = {0}, *out_map
;
44 struct pipe_transfer
*vb_transfer
[PIPE_MAX_ATTRIBS
] = {0}, *out_transfer
;
45 struct pipe_resource
*out_buffer
;
46 unsigned i
, num_verts
;
48 /* Initialize the translate key, i.e. the recipe how vertices should be
50 for (i
= 0; i
< ve
->count
; i
++) {
51 struct pipe_vertex_buffer
*vb
=
52 &r300
->vertex_buffer
[ve
->velem
[i
].vertex_buffer_index
];
53 enum pipe_format output_format
= ve
->hw_format
[i
];
54 unsigned output_format_size
= ve
->hw_format_size
[i
];
56 /* Check for support. */
57 if (ve
->velem
[i
].src_format
== ve
->hw_format
[i
] &&
58 (vb
->buffer_offset
+ ve
->velem
[i
].src_offset
) % 4 == 0 &&
59 vb
->stride
% 4 == 0) {
63 /* Workaround for translate: output floats instead of halfs. */
64 switch (output_format
) {
65 case PIPE_FORMAT_R16_FLOAT
:
66 output_format
= PIPE_FORMAT_R32_FLOAT
;
67 output_format_size
= 4;
69 case PIPE_FORMAT_R16G16_FLOAT
:
70 output_format
= PIPE_FORMAT_R32G32_FLOAT
;
71 output_format_size
= 8;
73 case PIPE_FORMAT_R16G16B16_FLOAT
:
74 output_format
= PIPE_FORMAT_R32G32B32_FLOAT
;
75 output_format_size
= 12;
77 case PIPE_FORMAT_R16G16B16A16_FLOAT
:
78 output_format
= PIPE_FORMAT_R32G32B32A32_FLOAT
;
79 output_format_size
= 16;
84 /* Add this vertex element. */
85 te
= &key
.element
[key
.nr_elements
];
87 te->instance_divisor;*/
88 te
->input_buffer
= ve
->velem
[i
].vertex_buffer_index
;
89 te
->input_format
= ve
->velem
[i
].src_format
;
90 te
->input_offset
= vb
->buffer_offset
+ ve
->velem
[i
].src_offset
;
91 te
->output_format
= output_format
;
92 te
->output_offset
= key
.output_stride
;
94 key
.output_stride
+= output_format_size
;
95 vb_translated
[ve
->velem
[i
].vertex_buffer_index
] = TRUE
;
96 tr_elem_index
[i
] = key
.nr_elements
;
100 /* Get a translate object. */
101 tr
= translate_cache_find(r300
->tran
.translate_cache
, &key
);
103 /* Map buffers we want to translate. */
104 for (i
= 0; i
< r300
->vertex_buffer_count
; i
++) {
105 if (vb_translated
[i
]) {
106 struct pipe_vertex_buffer
*vb
= &r300
->vertex_buffer
[i
];
108 vb_map
[i
] = pipe_buffer_map(pipe
, vb
->buffer
,
109 PIPE_TRANSFER_READ
, &vb_transfer
[i
]);
111 tr
->set_buffer(tr
, i
, vb_map
[i
], vb
->stride
, vb
->max_index
);
115 /* Create and map the output buffer. */
116 num_verts
= r300
->vertex_buffer_max_index
+ 1;
118 out_buffer
= pipe_buffer_create(&r300
->screen
->screen
,
119 PIPE_BIND_VERTEX_BUFFER
,
120 key
.output_stride
* num_verts
);
122 out_map
= pipe_buffer_map(pipe
, out_buffer
, PIPE_TRANSFER_WRITE
,
126 tr
->run(tr
, 0, num_verts
, 0, out_map
);
128 /* Unmap all buffers. */
129 for (i
= 0; i
< r300
->vertex_buffer_count
; i
++) {
130 if (vb_translated
[i
]) {
131 pipe_buffer_unmap(pipe
, r300
->vertex_buffer
[i
].buffer
,
136 pipe_buffer_unmap(pipe
, out_buffer
, out_transfer
);
138 /* Setup the new vertex buffer in the first free slot. */
139 for (i
= 0; i
< PIPE_MAX_ATTRIBS
; i
++) {
140 struct pipe_vertex_buffer
*vb
= &r300
->vertex_buffer
[i
];
143 pipe_resource_reference(&vb
->buffer
, out_buffer
);
144 vb
->buffer_offset
= 0;
145 vb
->max_index
= num_verts
- 1;
146 vb
->stride
= key
.output_stride
;
147 r300
->tran
.vb_slot
= i
;
152 /* Save and replace vertex elements. */
154 struct pipe_vertex_element new_velems
[PIPE_MAX_ATTRIBS
];
156 r300
->tran
.saved_velems
= r300
->velems
;
158 for (i
= 0; i
< ve
->count
; i
++) {
159 if (vb_translated
[ve
->velem
[i
].vertex_buffer_index
]) {
160 te
= &key
.element
[tr_elem_index
[i
]];
161 new_velems
[i
].instance_divisor
= ve
->velem
[i
].instance_divisor
;
162 new_velems
[i
].src_format
= te
->output_format
;
163 new_velems
[i
].src_offset
= te
->output_offset
;
164 new_velems
[i
].vertex_buffer_index
= r300
->tran
.vb_slot
;
166 memcpy(&new_velems
[i
], &ve
->velem
[i
],
167 sizeof(struct pipe_vertex_element
));
171 r300
->tran
.new_velems
=
172 pipe
->create_vertex_elements_state(pipe
, ve
->count
, new_velems
);
173 pipe
->bind_vertex_elements_state(pipe
, r300
->tran
.new_velems
);
176 pipe_resource_reference(&out_buffer
, NULL
);
179 void r300_end_vertex_translate(struct r300_context
*r300
)
181 struct pipe_context
*pipe
= &r300
->context
;
183 /* Restore vertex elements. */
184 pipe
->bind_vertex_elements_state(pipe
, r300
->tran
.saved_velems
);
185 pipe
->delete_vertex_elements_state(pipe
, r300
->tran
.new_velems
);
187 /* Delete the now-unused VBO. */
188 pipe_resource_reference(&r300
->vertex_buffer
[r300
->tran
.vb_slot
].buffer
,
192 void r300_translate_index_buffer(struct r300_context
*r300
,
193 struct pipe_resource
**index_buffer
,
194 unsigned *index_size
, unsigned index_offset
,
195 unsigned *start
, unsigned count
)
197 switch (*index_size
) {
199 util_shorten_ubyte_elts(&r300
->context
, index_buffer
, index_offset
, *start
, count
);
205 if (*start
% 2 != 0 || index_offset
) {
206 util_rebuild_ushort_elts(&r300
->context
, index_buffer
, index_offset
, *start
, count
);
213 util_rebuild_uint_elts(&r300
->context
, index_buffer
, index_offset
, *start
, count
);