2 /**************************************************************************
4 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
5 * Copyright 2012 Marek Olšák <maraeo@gmail.com>
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the
10 * "Software"), to deal in the Software without restriction, including
11 * without limitation the rights to use, copy, modify, merge, publish,
12 * distribute, sub license, and/or sell copies of the Software, and to
13 * permit persons to whom the Software is furnished to do so, subject to
14 * the following conditions:
16 * The above copyright notice and this permission notice (including the
17 * next paragraph) shall be included in all copies or substantial portions
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
21 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
22 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
23 * IN NO EVENT SHALL AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR
24 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
25 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
26 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28 **************************************************************************/
31 * This converts the VBO's vertex attribute/array information into
32 * Gallium vertex state and binds it.
35 * Keith Whitwell <keith@tungstengraphics.com>
36 * Marek Olšák <maraeo@gmail.com>
39 #include "st_context.h"
41 #include "st_cb_bufferobjects.h"
43 #include "st_program.h"
45 #include "cso_cache/cso_context.h"
46 #include "util/u_math.h"
48 #include "main/bufferobj.h"
49 #include "main/glformats.h"
52 static GLuint double_types
[4] = {
53 PIPE_FORMAT_R64_FLOAT
,
54 PIPE_FORMAT_R64G64_FLOAT
,
55 PIPE_FORMAT_R64G64B64_FLOAT
,
56 PIPE_FORMAT_R64G64B64A64_FLOAT
59 static GLuint float_types
[4] = {
60 PIPE_FORMAT_R32_FLOAT
,
61 PIPE_FORMAT_R32G32_FLOAT
,
62 PIPE_FORMAT_R32G32B32_FLOAT
,
63 PIPE_FORMAT_R32G32B32A32_FLOAT
66 static GLuint half_float_types
[4] = {
67 PIPE_FORMAT_R16_FLOAT
,
68 PIPE_FORMAT_R16G16_FLOAT
,
69 PIPE_FORMAT_R16G16B16_FLOAT
,
70 PIPE_FORMAT_R16G16B16A16_FLOAT
73 static GLuint uint_types_norm
[4] = {
74 PIPE_FORMAT_R32_UNORM
,
75 PIPE_FORMAT_R32G32_UNORM
,
76 PIPE_FORMAT_R32G32B32_UNORM
,
77 PIPE_FORMAT_R32G32B32A32_UNORM
80 static GLuint uint_types_scale
[4] = {
81 PIPE_FORMAT_R32_USCALED
,
82 PIPE_FORMAT_R32G32_USCALED
,
83 PIPE_FORMAT_R32G32B32_USCALED
,
84 PIPE_FORMAT_R32G32B32A32_USCALED
87 static GLuint uint_types_int
[4] = {
89 PIPE_FORMAT_R32G32_UINT
,
90 PIPE_FORMAT_R32G32B32_UINT
,
91 PIPE_FORMAT_R32G32B32A32_UINT
94 static GLuint int_types_norm
[4] = {
95 PIPE_FORMAT_R32_SNORM
,
96 PIPE_FORMAT_R32G32_SNORM
,
97 PIPE_FORMAT_R32G32B32_SNORM
,
98 PIPE_FORMAT_R32G32B32A32_SNORM
101 static GLuint int_types_scale
[4] = {
102 PIPE_FORMAT_R32_SSCALED
,
103 PIPE_FORMAT_R32G32_SSCALED
,
104 PIPE_FORMAT_R32G32B32_SSCALED
,
105 PIPE_FORMAT_R32G32B32A32_SSCALED
108 static GLuint int_types_int
[4] = {
109 PIPE_FORMAT_R32_SINT
,
110 PIPE_FORMAT_R32G32_SINT
,
111 PIPE_FORMAT_R32G32B32_SINT
,
112 PIPE_FORMAT_R32G32B32A32_SINT
115 static GLuint ushort_types_norm
[4] = {
116 PIPE_FORMAT_R16_UNORM
,
117 PIPE_FORMAT_R16G16_UNORM
,
118 PIPE_FORMAT_R16G16B16_UNORM
,
119 PIPE_FORMAT_R16G16B16A16_UNORM
122 static GLuint ushort_types_scale
[4] = {
123 PIPE_FORMAT_R16_USCALED
,
124 PIPE_FORMAT_R16G16_USCALED
,
125 PIPE_FORMAT_R16G16B16_USCALED
,
126 PIPE_FORMAT_R16G16B16A16_USCALED
129 static GLuint ushort_types_int
[4] = {
130 PIPE_FORMAT_R16_UINT
,
131 PIPE_FORMAT_R16G16_UINT
,
132 PIPE_FORMAT_R16G16B16_UINT
,
133 PIPE_FORMAT_R16G16B16A16_UINT
136 static GLuint short_types_norm
[4] = {
137 PIPE_FORMAT_R16_SNORM
,
138 PIPE_FORMAT_R16G16_SNORM
,
139 PIPE_FORMAT_R16G16B16_SNORM
,
140 PIPE_FORMAT_R16G16B16A16_SNORM
143 static GLuint short_types_scale
[4] = {
144 PIPE_FORMAT_R16_SSCALED
,
145 PIPE_FORMAT_R16G16_SSCALED
,
146 PIPE_FORMAT_R16G16B16_SSCALED
,
147 PIPE_FORMAT_R16G16B16A16_SSCALED
150 static GLuint short_types_int
[4] = {
151 PIPE_FORMAT_R16_SINT
,
152 PIPE_FORMAT_R16G16_SINT
,
153 PIPE_FORMAT_R16G16B16_SINT
,
154 PIPE_FORMAT_R16G16B16A16_SINT
157 static GLuint ubyte_types_norm
[4] = {
158 PIPE_FORMAT_R8_UNORM
,
159 PIPE_FORMAT_R8G8_UNORM
,
160 PIPE_FORMAT_R8G8B8_UNORM
,
161 PIPE_FORMAT_R8G8B8A8_UNORM
164 static GLuint ubyte_types_scale
[4] = {
165 PIPE_FORMAT_R8_USCALED
,
166 PIPE_FORMAT_R8G8_USCALED
,
167 PIPE_FORMAT_R8G8B8_USCALED
,
168 PIPE_FORMAT_R8G8B8A8_USCALED
171 static GLuint ubyte_types_int
[4] = {
173 PIPE_FORMAT_R8G8_UINT
,
174 PIPE_FORMAT_R8G8B8_UINT
,
175 PIPE_FORMAT_R8G8B8A8_UINT
178 static GLuint byte_types_norm
[4] = {
179 PIPE_FORMAT_R8_SNORM
,
180 PIPE_FORMAT_R8G8_SNORM
,
181 PIPE_FORMAT_R8G8B8_SNORM
,
182 PIPE_FORMAT_R8G8B8A8_SNORM
185 static GLuint byte_types_scale
[4] = {
186 PIPE_FORMAT_R8_SSCALED
,
187 PIPE_FORMAT_R8G8_SSCALED
,
188 PIPE_FORMAT_R8G8B8_SSCALED
,
189 PIPE_FORMAT_R8G8B8A8_SSCALED
192 static GLuint byte_types_int
[4] = {
194 PIPE_FORMAT_R8G8_SINT
,
195 PIPE_FORMAT_R8G8B8_SINT
,
196 PIPE_FORMAT_R8G8B8A8_SINT
199 static GLuint fixed_types
[4] = {
200 PIPE_FORMAT_R32_FIXED
,
201 PIPE_FORMAT_R32G32_FIXED
,
202 PIPE_FORMAT_R32G32B32_FIXED
,
203 PIPE_FORMAT_R32G32B32A32_FIXED
208 * Return a PIPE_FORMAT_x for the given GL datatype and size.
211 st_pipe_vertex_format(GLenum type
, GLuint size
, GLenum format
,
212 GLboolean normalized
, GLboolean integer
)
214 assert((type
>= GL_BYTE
&& type
<= GL_DOUBLE
) ||
215 type
== GL_FIXED
|| type
== GL_HALF_FLOAT
||
216 type
== GL_INT_2_10_10_10_REV
||
217 type
== GL_UNSIGNED_INT_2_10_10_10_REV
);
220 assert(format
== GL_RGBA
|| format
== GL_BGRA
);
222 if (type
== GL_INT_2_10_10_10_REV
||
223 type
== GL_UNSIGNED_INT_2_10_10_10_REV
) {
227 if (format
== GL_BGRA
) {
228 if (type
== GL_INT_2_10_10_10_REV
) {
230 return PIPE_FORMAT_B10G10R10A2_SNORM
;
232 return PIPE_FORMAT_B10G10R10A2_SSCALED
;
235 return PIPE_FORMAT_B10G10R10A2_UNORM
;
237 return PIPE_FORMAT_B10G10R10A2_USCALED
;
240 if (type
== GL_INT_2_10_10_10_REV
) {
242 return PIPE_FORMAT_R10G10B10A2_SNORM
;
244 return PIPE_FORMAT_R10G10B10A2_SSCALED
;
247 return PIPE_FORMAT_R10G10B10A2_UNORM
;
249 return PIPE_FORMAT_R10G10B10A2_USCALED
;
254 if (format
== GL_BGRA
) {
255 /* this is an odd-ball case */
256 assert(type
== GL_UNSIGNED_BYTE
);
258 return PIPE_FORMAT_B8G8R8A8_UNORM
;
263 case GL_INT
: return int_types_int
[size
-1];
264 case GL_SHORT
: return short_types_int
[size
-1];
265 case GL_BYTE
: return byte_types_int
[size
-1];
266 case GL_UNSIGNED_INT
: return uint_types_int
[size
-1];
267 case GL_UNSIGNED_SHORT
: return ushort_types_int
[size
-1];
268 case GL_UNSIGNED_BYTE
: return ubyte_types_int
[size
-1];
269 default: assert(0); return 0;
272 else if (normalized
) {
274 case GL_DOUBLE
: return double_types
[size
-1];
275 case GL_FLOAT
: return float_types
[size
-1];
276 case GL_HALF_FLOAT
: return half_float_types
[size
-1];
277 case GL_INT
: return int_types_norm
[size
-1];
278 case GL_SHORT
: return short_types_norm
[size
-1];
279 case GL_BYTE
: return byte_types_norm
[size
-1];
280 case GL_UNSIGNED_INT
: return uint_types_norm
[size
-1];
281 case GL_UNSIGNED_SHORT
: return ushort_types_norm
[size
-1];
282 case GL_UNSIGNED_BYTE
: return ubyte_types_norm
[size
-1];
283 case GL_FIXED
: return fixed_types
[size
-1];
284 default: assert(0); return 0;
289 case GL_DOUBLE
: return double_types
[size
-1];
290 case GL_FLOAT
: return float_types
[size
-1];
291 case GL_HALF_FLOAT
: return half_float_types
[size
-1];
292 case GL_INT
: return int_types_scale
[size
-1];
293 case GL_SHORT
: return short_types_scale
[size
-1];
294 case GL_BYTE
: return byte_types_scale
[size
-1];
295 case GL_UNSIGNED_INT
: return uint_types_scale
[size
-1];
296 case GL_UNSIGNED_SHORT
: return ushort_types_scale
[size
-1];
297 case GL_UNSIGNED_BYTE
: return ubyte_types_scale
[size
-1];
298 case GL_FIXED
: return fixed_types
[size
-1];
299 default: assert(0); return 0;
302 return PIPE_FORMAT_NONE
; /* silence compiler warning */
306 * Examine the active arrays to determine if we have interleaved
307 * vertex arrays all living in one VBO, or all living in user space.
310 is_interleaved_arrays(const struct st_vertex_program
*vp
,
311 const struct st_vp_variant
*vpv
,
312 const struct gl_client_array
**arrays
)
315 const struct gl_buffer_object
*firstBufObj
= NULL
;
316 GLint firstStride
= -1;
317 const GLubyte
*firstPtr
= NULL
;
318 GLboolean userSpaceBuffer
= GL_FALSE
;
320 for (attr
= 0; attr
< vpv
->num_inputs
; attr
++) {
321 const GLuint mesaAttr
= vp
->index_to_input
[attr
];
322 const struct gl_client_array
*array
= arrays
[mesaAttr
];
323 const struct gl_buffer_object
*bufObj
= array
->BufferObj
;
324 const GLsizei stride
= array
->StrideB
; /* in bytes */
327 /* save info about the first array */
328 firstStride
= stride
;
329 firstPtr
= array
->Ptr
;
330 firstBufObj
= bufObj
;
331 userSpaceBuffer
= !bufObj
|| !bufObj
->Name
;
334 /* check if other arrays interleave with the first, in same buffer */
335 if (stride
!= firstStride
)
336 return GL_FALSE
; /* strides don't match */
338 if (bufObj
!= firstBufObj
)
339 return GL_FALSE
; /* arrays in different VBOs */
341 if (abs(array
->Ptr
- firstPtr
) > firstStride
)
342 return GL_FALSE
; /* arrays start too far apart */
344 if ((!_mesa_is_bufferobj(bufObj
)) != userSpaceBuffer
)
345 return GL_FALSE
; /* mix of VBO and user-space arrays */
353 * Set up for drawing interleaved arrays that all live in one VBO
354 * or all live in user space.
355 * \param vbuffer returns vertex buffer info
356 * \param velements returns vertex element info
359 setup_interleaved_attribs(const struct st_vertex_program
*vp
,
360 const struct st_vp_variant
*vpv
,
361 const struct gl_client_array
**arrays
,
362 struct pipe_vertex_buffer
*vbuffer
,
363 struct pipe_vertex_element velements
[])
366 const GLubyte
*low_addr
= NULL
;
367 GLboolean usingVBO
; /* all arrays in a VBO? */
368 struct gl_buffer_object
*bufobj
;
371 /* Find the lowest address of the arrays we're drawing,
372 * Init bufobj and stride.
374 if (vpv
->num_inputs
) {
375 const GLuint mesaAttr0
= vp
->index_to_input
[0];
376 const struct gl_client_array
*array
= arrays
[mesaAttr0
];
378 /* Since we're doing interleaved arrays, we know there'll be at most
379 * one buffer object and the stride will be the same for all arrays.
382 bufobj
= array
->BufferObj
;
383 stride
= array
->StrideB
;
385 low_addr
= arrays
[vp
->index_to_input
[0]]->Ptr
;
387 for (attr
= 1; attr
< vpv
->num_inputs
; attr
++) {
388 const GLubyte
*start
= arrays
[vp
->index_to_input
[attr
]]->Ptr
;
389 low_addr
= MIN2(low_addr
, start
);
393 /* not sure we'll ever have zero inputs, but play it safe */
399 /* are the arrays in user space? */
400 usingVBO
= _mesa_is_bufferobj(bufobj
);
402 for (attr
= 0; attr
< vpv
->num_inputs
; attr
++) {
403 const GLuint mesaAttr
= vp
->index_to_input
[attr
];
404 const struct gl_client_array
*array
= arrays
[mesaAttr
];
405 unsigned src_offset
= (unsigned) (array
->Ptr
- low_addr
);
407 assert(array
->_ElementSize
==
408 _mesa_bytes_per_vertex_attrib(array
->Size
, array
->Type
));
410 velements
[attr
].src_offset
= src_offset
;
411 velements
[attr
].instance_divisor
= array
->InstanceDivisor
;
412 velements
[attr
].vertex_buffer_index
= 0;
413 velements
[attr
].src_format
= st_pipe_vertex_format(array
->Type
,
418 assert(velements
[attr
].src_format
);
422 * Return the vbuffer info and setup user-space attrib info, if needed.
424 if (vpv
->num_inputs
== 0) {
425 /* just defensive coding here */
426 vbuffer
->buffer
= NULL
;
427 vbuffer
->user_buffer
= NULL
;
428 vbuffer
->buffer_offset
= 0;
432 /* all interleaved arrays in a VBO */
433 struct st_buffer_object
*stobj
= st_buffer_object(bufobj
);
435 if (!stobj
|| !stobj
->buffer
) {
436 return FALSE
; /* out-of-memory error probably */
439 vbuffer
->buffer
= stobj
->buffer
;
440 vbuffer
->user_buffer
= NULL
;
441 vbuffer
->buffer_offset
= pointer_to_offset(low_addr
);
442 vbuffer
->stride
= stride
;
445 /* all interleaved arrays in user memory */
446 vbuffer
->buffer
= NULL
;
447 vbuffer
->user_buffer
= low_addr
;
448 vbuffer
->buffer_offset
= 0;
449 vbuffer
->stride
= stride
;
455 * Set up a separate pipe_vertex_buffer and pipe_vertex_element for each
457 * \param vbuffer returns vertex buffer info
458 * \param velements returns vertex element info
461 setup_non_interleaved_attribs(struct st_context
*st
,
462 const struct st_vertex_program
*vp
,
463 const struct st_vp_variant
*vpv
,
464 const struct gl_client_array
**arrays
,
465 struct pipe_vertex_buffer vbuffer
[],
466 struct pipe_vertex_element velements
[])
468 struct gl_context
*ctx
= st
->ctx
;
471 for (attr
= 0; attr
< vpv
->num_inputs
; attr
++) {
472 const GLuint mesaAttr
= vp
->index_to_input
[attr
];
473 const struct gl_client_array
*array
= arrays
[mesaAttr
];
474 struct gl_buffer_object
*bufobj
= array
->BufferObj
;
475 GLsizei stride
= array
->StrideB
;
477 assert(array
->_ElementSize
==
478 _mesa_bytes_per_vertex_attrib(array
->Size
, array
->Type
));
480 if (_mesa_is_bufferobj(bufobj
)) {
481 /* Attribute data is in a VBO.
482 * Recall that for VBOs, the gl_client_array->Ptr field is
483 * really an offset from the start of the VBO, not a pointer.
485 struct st_buffer_object
*stobj
= st_buffer_object(bufobj
);
487 if (!stobj
|| !stobj
->buffer
) {
488 return FALSE
; /* out-of-memory error probably */
491 vbuffer
[attr
].buffer
= stobj
->buffer
;
492 vbuffer
[attr
].user_buffer
= NULL
;
493 vbuffer
[attr
].buffer_offset
= pointer_to_offset(array
->Ptr
);
500 ptr
= (void *) array
->Ptr
;
503 /* no array, use ctx->Current.Attrib[] value */
504 ptr
= (void *) ctx
->Current
.Attrib
[mesaAttr
];
510 vbuffer
[attr
].buffer
= NULL
;
511 vbuffer
[attr
].user_buffer
= ptr
;
512 vbuffer
[attr
].buffer_offset
= 0;
515 /* common-case setup */
516 vbuffer
[attr
].stride
= stride
; /* in bytes */
518 velements
[attr
].src_offset
= 0;
519 velements
[attr
].instance_divisor
= array
->InstanceDivisor
;
520 velements
[attr
].vertex_buffer_index
= attr
;
521 velements
[attr
].src_format
= st_pipe_vertex_format(array
->Type
,
526 assert(velements
[attr
].src_format
);
531 static void update_array(struct st_context
*st
)
533 struct gl_context
*ctx
= st
->ctx
;
534 const struct gl_client_array
**arrays
= ctx
->Array
._DrawArrays
;
535 const struct st_vertex_program
*vp
;
536 const struct st_vp_variant
*vpv
;
537 struct pipe_vertex_buffer vbuffer
[PIPE_MAX_SHADER_INPUTS
];
538 struct pipe_vertex_element velements
[PIPE_MAX_ATTRIBS
];
539 unsigned num_vbuffers
, num_velements
;
541 st
->vertex_array_out_of_memory
= FALSE
;
543 /* No drawing has been done yet, so do nothing. */
547 /* vertex program validation must be done before this */
549 vpv
= st
->vp_variant
;
551 memset(velements
, 0, sizeof(struct pipe_vertex_element
) * vpv
->num_inputs
);
554 * Setup the vbuffer[] and velements[] arrays.
556 if (is_interleaved_arrays(vp
, vpv
, arrays
)) {
557 if (!setup_interleaved_attribs(vp
, vpv
, arrays
, vbuffer
, velements
)) {
558 st
->vertex_array_out_of_memory
= TRUE
;
563 num_velements
= vpv
->num_inputs
;
564 if (num_velements
== 0)
568 if (!setup_non_interleaved_attribs(st
, vp
, vpv
, arrays
, vbuffer
,
570 st
->vertex_array_out_of_memory
= TRUE
;
574 num_vbuffers
= vpv
->num_inputs
;
575 num_velements
= vpv
->num_inputs
;
578 cso_set_vertex_buffers(st
->cso_context
, 0, num_vbuffers
, vbuffer
);
579 if (st
->last_num_vbuffers
> num_vbuffers
) {
580 /* Unbind remaining buffers, if any. */
581 cso_set_vertex_buffers(st
->cso_context
, num_vbuffers
,
582 st
->last_num_vbuffers
- num_vbuffers
, NULL
);
584 st
->last_num_vbuffers
= num_vbuffers
;
585 cso_set_vertex_elements(st
->cso_context
, num_velements
, velements
);
589 const struct st_tracked_state st_update_array
= {
590 "st_update_array", /* name */
592 _NEW_BUFFER_OBJECT
, /* mesa */
593 ST_NEW_VERTEX_ARRAYS
| ST_NEW_VERTEX_PROGRAM
, /* st */
595 update_array
/* update */