1 /**************************************************************************
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
29 * This file implements the st_draw_vbo() function which is called from
30 * Mesa's VBO module. All point/line/triangle rendering is done through
31 * this function whether the user called glBegin/End, glDrawArrays,
32 * glDrawElements, glEvalMesh, or glCalList, etc.
34 * We basically convert the VBO's vertex attribute/array information into
35 * Gallium vertex state, bind the vertex buffer objects and call
39 * Keith Whitwell <keith@tungstengraphics.com>
43 #include "main/imports.h"
44 #include "main/image.h"
45 #include "main/bufferobj.h"
46 #include "main/macros.h"
47 #include "main/mfeatures.h"
48 #include "program/prog_uniform.h"
52 #include "st_context.h"
54 #include "st_cb_bufferobjects.h"
56 #include "st_program.h"
58 #include "pipe/p_context.h"
59 #include "pipe/p_defines.h"
60 #include "util/u_inlines.h"
61 #include "util/u_format.h"
62 #include "util/u_prim.h"
63 #include "util/u_draw_quad.h"
64 #include "draw/draw_context.h"
65 #include "cso_cache/cso_context.h"
68 static GLuint double_types
[4] = {
69 PIPE_FORMAT_R64_FLOAT
,
70 PIPE_FORMAT_R64G64_FLOAT
,
71 PIPE_FORMAT_R64G64B64_FLOAT
,
72 PIPE_FORMAT_R64G64B64A64_FLOAT
75 static GLuint float_types
[4] = {
76 PIPE_FORMAT_R32_FLOAT
,
77 PIPE_FORMAT_R32G32_FLOAT
,
78 PIPE_FORMAT_R32G32B32_FLOAT
,
79 PIPE_FORMAT_R32G32B32A32_FLOAT
82 static GLuint half_float_types
[4] = {
83 PIPE_FORMAT_R16_FLOAT
,
84 PIPE_FORMAT_R16G16_FLOAT
,
85 PIPE_FORMAT_R16G16B16_FLOAT
,
86 PIPE_FORMAT_R16G16B16A16_FLOAT
89 static GLuint uint_types_norm
[4] = {
90 PIPE_FORMAT_R32_UNORM
,
91 PIPE_FORMAT_R32G32_UNORM
,
92 PIPE_FORMAT_R32G32B32_UNORM
,
93 PIPE_FORMAT_R32G32B32A32_UNORM
96 static GLuint uint_types_scale
[4] = {
97 PIPE_FORMAT_R32_USCALED
,
98 PIPE_FORMAT_R32G32_USCALED
,
99 PIPE_FORMAT_R32G32B32_USCALED
,
100 PIPE_FORMAT_R32G32B32A32_USCALED
103 static GLuint int_types_norm
[4] = {
104 PIPE_FORMAT_R32_SNORM
,
105 PIPE_FORMAT_R32G32_SNORM
,
106 PIPE_FORMAT_R32G32B32_SNORM
,
107 PIPE_FORMAT_R32G32B32A32_SNORM
110 static GLuint int_types_scale
[4] = {
111 PIPE_FORMAT_R32_SSCALED
,
112 PIPE_FORMAT_R32G32_SSCALED
,
113 PIPE_FORMAT_R32G32B32_SSCALED
,
114 PIPE_FORMAT_R32G32B32A32_SSCALED
117 static GLuint ushort_types_norm
[4] = {
118 PIPE_FORMAT_R16_UNORM
,
119 PIPE_FORMAT_R16G16_UNORM
,
120 PIPE_FORMAT_R16G16B16_UNORM
,
121 PIPE_FORMAT_R16G16B16A16_UNORM
124 static GLuint ushort_types_scale
[4] = {
125 PIPE_FORMAT_R16_USCALED
,
126 PIPE_FORMAT_R16G16_USCALED
,
127 PIPE_FORMAT_R16G16B16_USCALED
,
128 PIPE_FORMAT_R16G16B16A16_USCALED
131 static GLuint short_types_norm
[4] = {
132 PIPE_FORMAT_R16_SNORM
,
133 PIPE_FORMAT_R16G16_SNORM
,
134 PIPE_FORMAT_R16G16B16_SNORM
,
135 PIPE_FORMAT_R16G16B16A16_SNORM
138 static GLuint short_types_scale
[4] = {
139 PIPE_FORMAT_R16_SSCALED
,
140 PIPE_FORMAT_R16G16_SSCALED
,
141 PIPE_FORMAT_R16G16B16_SSCALED
,
142 PIPE_FORMAT_R16G16B16A16_SSCALED
145 static GLuint ubyte_types_norm
[4] = {
146 PIPE_FORMAT_R8_UNORM
,
147 PIPE_FORMAT_R8G8_UNORM
,
148 PIPE_FORMAT_R8G8B8_UNORM
,
149 PIPE_FORMAT_R8G8B8A8_UNORM
152 static GLuint ubyte_types_scale
[4] = {
153 PIPE_FORMAT_R8_USCALED
,
154 PIPE_FORMAT_R8G8_USCALED
,
155 PIPE_FORMAT_R8G8B8_USCALED
,
156 PIPE_FORMAT_R8G8B8A8_USCALED
159 static GLuint byte_types_norm
[4] = {
160 PIPE_FORMAT_R8_SNORM
,
161 PIPE_FORMAT_R8G8_SNORM
,
162 PIPE_FORMAT_R8G8B8_SNORM
,
163 PIPE_FORMAT_R8G8B8A8_SNORM
166 static GLuint byte_types_scale
[4] = {
167 PIPE_FORMAT_R8_SSCALED
,
168 PIPE_FORMAT_R8G8_SSCALED
,
169 PIPE_FORMAT_R8G8B8_SSCALED
,
170 PIPE_FORMAT_R8G8B8A8_SSCALED
173 static GLuint fixed_types
[4] = {
174 PIPE_FORMAT_R32_FIXED
,
175 PIPE_FORMAT_R32G32_FIXED
,
176 PIPE_FORMAT_R32G32B32_FIXED
,
177 PIPE_FORMAT_R32G32B32A32_FIXED
183 * Return a PIPE_FORMAT_x for the given GL datatype and size.
186 st_pipe_vertex_format(GLenum type
, GLuint size
, GLenum format
,
187 GLboolean normalized
)
189 assert((type
>= GL_BYTE
&& type
<= GL_DOUBLE
) ||
190 type
== GL_FIXED
|| type
== GL_HALF_FLOAT
);
193 assert(format
== GL_RGBA
|| format
== GL_BGRA
);
195 if (format
== GL_BGRA
) {
196 /* this is an odd-ball case */
197 assert(type
== GL_UNSIGNED_BYTE
);
199 return PIPE_FORMAT_B8G8R8A8_UNORM
;
204 case GL_DOUBLE
: return double_types
[size
-1];
205 case GL_FLOAT
: return float_types
[size
-1];
206 case GL_HALF_FLOAT
: return half_float_types
[size
-1];
207 case GL_INT
: return int_types_norm
[size
-1];
208 case GL_SHORT
: return short_types_norm
[size
-1];
209 case GL_BYTE
: return byte_types_norm
[size
-1];
210 case GL_UNSIGNED_INT
: return uint_types_norm
[size
-1];
211 case GL_UNSIGNED_SHORT
: return ushort_types_norm
[size
-1];
212 case GL_UNSIGNED_BYTE
: return ubyte_types_norm
[size
-1];
213 case GL_FIXED
: return fixed_types
[size
-1];
214 default: assert(0); return 0;
219 case GL_DOUBLE
: return double_types
[size
-1];
220 case GL_FLOAT
: return float_types
[size
-1];
221 case GL_HALF_FLOAT
: return half_float_types
[size
-1];
222 case GL_INT
: return int_types_scale
[size
-1];
223 case GL_SHORT
: return short_types_scale
[size
-1];
224 case GL_BYTE
: return byte_types_scale
[size
-1];
225 case GL_UNSIGNED_INT
: return uint_types_scale
[size
-1];
226 case GL_UNSIGNED_SHORT
: return ushort_types_scale
[size
-1];
227 case GL_UNSIGNED_BYTE
: return ubyte_types_scale
[size
-1];
228 case GL_FIXED
: return fixed_types
[size
-1];
229 default: assert(0); return 0;
232 return PIPE_FORMAT_NONE
; /* silence compiler warning */
238 * Examine the active arrays to determine if we have interleaved
239 * vertex arrays all living in one VBO, or all living in user space.
242 is_interleaved_arrays(const struct st_vertex_program
*vp
,
243 const struct st_vp_variant
*vpv
,
244 const struct gl_client_array
**arrays
)
247 const struct gl_buffer_object
*firstBufObj
= NULL
;
248 GLint firstStride
= -1;
249 const GLubyte
*firstPtr
= NULL
;
250 GLboolean userSpaceBuffer
= GL_FALSE
;
252 for (attr
= 0; attr
< vpv
->num_inputs
; attr
++) {
253 const GLuint mesaAttr
= vp
->index_to_input
[attr
];
254 const struct gl_client_array
*array
= arrays
[mesaAttr
];
255 const struct gl_buffer_object
*bufObj
= array
->BufferObj
;
256 const GLsizei stride
= array
->StrideB
; /* in bytes */
259 /* save info about the first array */
260 firstStride
= stride
;
261 firstPtr
= array
->Ptr
;
262 firstBufObj
= bufObj
;
263 userSpaceBuffer
= !bufObj
|| !bufObj
->Name
;
266 /* check if other arrays interleave with the first, in same buffer */
267 if (stride
!= firstStride
)
268 return GL_FALSE
; /* strides don't match */
270 if (bufObj
!= firstBufObj
)
271 return GL_FALSE
; /* arrays in different VBOs */
273 if (abs(array
->Ptr
- firstPtr
) > firstStride
)
274 return GL_FALSE
; /* arrays start too far apart */
276 if ((!bufObj
|| !_mesa_is_bufferobj(bufObj
)) != userSpaceBuffer
)
277 return GL_FALSE
; /* mix of VBO and user-space arrays */
286 * Set up for drawing interleaved arrays that all live in one VBO
287 * or all live in user space.
288 * \param vbuffer returns vertex buffer info
289 * \param velements returns vertex element info
292 setup_interleaved_attribs(struct gl_context
*ctx
,
293 const struct st_vertex_program
*vp
,
294 const struct st_vp_variant
*vpv
,
295 const struct gl_client_array
**arrays
,
296 struct pipe_vertex_buffer
*vbuffer
,
297 struct pipe_vertex_element velements
[],
299 unsigned num_instances
)
301 struct st_context
*st
= st_context(ctx
);
302 struct pipe_context
*pipe
= st
->pipe
;
304 const GLubyte
*low_addr
= NULL
;
306 /* Find the lowest address of the arrays we're drawing */
307 if (vpv
->num_inputs
) {
308 low_addr
= arrays
[vp
->index_to_input
[0]]->Ptr
;
310 for (attr
= 1; attr
< vpv
->num_inputs
; attr
++) {
311 const GLubyte
*start
= arrays
[vp
->index_to_input
[attr
]]->Ptr
;
312 low_addr
= MIN2(low_addr
, start
);
316 for (attr
= 0; attr
< vpv
->num_inputs
; attr
++) {
317 const GLuint mesaAttr
= vp
->index_to_input
[attr
];
318 const struct gl_client_array
*array
= arrays
[mesaAttr
];
319 struct gl_buffer_object
*bufobj
= array
->BufferObj
;
320 struct st_buffer_object
*stobj
= st_buffer_object(bufobj
);
321 unsigned src_offset
= (unsigned) (array
->Ptr
- low_addr
);
322 GLuint element_size
= array
->_ElementSize
;
323 GLsizei stride
= array
->StrideB
;
325 assert(element_size
== array
->Size
* _mesa_sizeof_type(array
->Type
));
328 if (bufobj
&& _mesa_is_bufferobj(bufobj
)) {
329 vbuffer
->buffer
= NULL
;
330 pipe_resource_reference(&vbuffer
->buffer
, stobj
->buffer
);
331 vbuffer
->buffer_offset
= pointer_to_offset(low_addr
);
334 uint divisor
= array
->InstanceDivisor
;
335 uint last_index
= divisor
? num_instances
/ divisor
: max_index
;
336 uint bytes
= src_offset
+ stride
* last_index
+ element_size
;
338 vbuffer
->buffer
= pipe_user_buffer_create(pipe
->screen
,
341 PIPE_BIND_VERTEX_BUFFER
);
342 vbuffer
->buffer_offset
= 0;
344 /* Track user vertex buffers. */
345 pipe_resource_reference(&st
->user_attrib
[0].buffer
, vbuffer
->buffer
);
346 st
->user_attrib
[0].element_size
= element_size
;
347 st
->user_attrib
[0].stride
= stride
;
348 st
->num_user_attribs
= 1;
350 vbuffer
->stride
= stride
; /* in bytes */
353 velements
[attr
].src_offset
= src_offset
;
354 velements
[attr
].instance_divisor
= array
->InstanceDivisor
;
355 velements
[attr
].vertex_buffer_index
= 0;
356 velements
[attr
].src_format
= st_pipe_vertex_format(array
->Type
,
360 assert(velements
[attr
].src_format
);
366 * Set up a separate pipe_vertex_buffer and pipe_vertex_element for each
368 * \param vbuffer returns vertex buffer info
369 * \param velements returns vertex element info
372 setup_non_interleaved_attribs(struct gl_context
*ctx
,
373 const struct st_vertex_program
*vp
,
374 const struct st_vp_variant
*vpv
,
375 const struct gl_client_array
**arrays
,
376 struct pipe_vertex_buffer vbuffer
[],
377 struct pipe_vertex_element velements
[],
379 unsigned num_instances
)
381 struct st_context
*st
= st_context(ctx
);
382 struct pipe_context
*pipe
= st
->pipe
;
385 for (attr
= 0; attr
< vpv
->num_inputs
; attr
++) {
386 const GLuint mesaAttr
= vp
->index_to_input
[attr
];
387 const struct gl_client_array
*array
= arrays
[mesaAttr
];
388 struct gl_buffer_object
*bufobj
= array
->BufferObj
;
389 GLuint element_size
= array
->_ElementSize
;
390 GLsizei stride
= array
->StrideB
;
392 assert(element_size
== array
->Size
* _mesa_sizeof_type(array
->Type
));
394 if (bufobj
&& _mesa_is_bufferobj(bufobj
)) {
395 /* Attribute data is in a VBO.
396 * Recall that for VBOs, the gl_client_array->Ptr field is
397 * really an offset from the start of the VBO, not a pointer.
399 struct st_buffer_object
*stobj
= st_buffer_object(bufobj
);
400 assert(stobj
->buffer
);
402 vbuffer
[attr
].buffer
= NULL
;
403 pipe_resource_reference(&vbuffer
[attr
].buffer
, stobj
->buffer
);
404 vbuffer
[attr
].buffer_offset
= pointer_to_offset(array
->Ptr
);
412 uint divisor
= array
->InstanceDivisor
;
413 uint last_index
= divisor
? num_instances
/ divisor
: max_index
;
415 bytes
= stride
* last_index
+ element_size
;
417 ptr
= (void *) array
->Ptr
;
420 /* no array, use ctx->Current.Attrib[] value */
421 bytes
= element_size
= sizeof(ctx
->Current
.Attrib
[0]);
422 ptr
= (void *) ctx
->Current
.Attrib
[mesaAttr
];
429 vbuffer
[attr
].buffer
=
430 pipe_user_buffer_create(pipe
->screen
, ptr
, bytes
,
431 PIPE_BIND_VERTEX_BUFFER
);
433 vbuffer
[attr
].buffer_offset
= 0;
435 /* Track user vertex buffers. */
436 pipe_resource_reference(&st
->user_attrib
[attr
].buffer
, vbuffer
[attr
].buffer
);
437 st
->user_attrib
[attr
].element_size
= element_size
;
438 st
->user_attrib
[attr
].stride
= stride
;
439 st
->num_user_attribs
= MAX2(st
->num_user_attribs
, attr
+ 1);
442 /* common-case setup */
443 vbuffer
[attr
].stride
= stride
; /* in bytes */
445 velements
[attr
].src_offset
= 0;
446 velements
[attr
].instance_divisor
= array
->InstanceDivisor
;
447 velements
[attr
].vertex_buffer_index
= attr
;
448 velements
[attr
].src_format
= st_pipe_vertex_format(array
->Type
,
452 assert(velements
[attr
].src_format
);
458 setup_index_buffer(struct gl_context
*ctx
,
459 const struct _mesa_index_buffer
*ib
,
460 struct pipe_index_buffer
*ibuffer
)
462 struct st_context
*st
= st_context(ctx
);
463 struct pipe_context
*pipe
= st
->pipe
;
465 memset(ibuffer
, 0, sizeof(*ibuffer
));
467 struct gl_buffer_object
*bufobj
= ib
->obj
;
470 case GL_UNSIGNED_INT
:
471 ibuffer
->index_size
= 4;
473 case GL_UNSIGNED_SHORT
:
474 ibuffer
->index_size
= 2;
476 case GL_UNSIGNED_BYTE
:
477 ibuffer
->index_size
= 1;
484 /* get/create the index buffer object */
485 if (bufobj
&& _mesa_is_bufferobj(bufobj
)) {
486 /* elements/indexes are in a real VBO */
487 struct st_buffer_object
*stobj
= st_buffer_object(bufobj
);
488 pipe_resource_reference(&ibuffer
->buffer
, stobj
->buffer
);
489 ibuffer
->offset
= pointer_to_offset(ib
->ptr
);
492 /* element/indicies are in user space memory */
494 pipe_user_buffer_create(pipe
->screen
, (void *) ib
->ptr
,
495 ib
->count
* ibuffer
->index_size
,
496 PIPE_BIND_INDEX_BUFFER
);
503 * Prior to drawing, check that any uniforms referenced by the
504 * current shader have been set. If a uniform has not been set,
508 check_uniforms(struct gl_context
*ctx
)
510 struct gl_shader_program
*shProg
[3] = {
511 ctx
->Shader
.CurrentVertexProgram
,
512 ctx
->Shader
.CurrentGeometryProgram
,
513 ctx
->Shader
.CurrentFragmentProgram
,
517 for (j
= 0; j
< 3; j
++) {
520 if (shProg
[j
] == NULL
|| !shProg
[j
]->LinkStatus
)
523 for (i
= 0; i
< shProg
[j
]->Uniforms
->NumUniforms
; i
++) {
524 const struct gl_uniform
*u
= &shProg
[j
]->Uniforms
->Uniforms
[i
];
525 if (!u
->Initialized
) {
527 "Using shader with uninitialized uniform: %s",
536 * Translate OpenGL primtive type (GL_POINTS, GL_TRIANGLE_STRIP, etc) to
537 * the corresponding Gallium type.
540 translate_prim(const struct gl_context
*ctx
, unsigned prim
)
542 /* GL prims should match Gallium prims, spot-check a few */
543 assert(GL_POINTS
== PIPE_PRIM_POINTS
);
544 assert(GL_QUADS
== PIPE_PRIM_QUADS
);
545 assert(GL_TRIANGLE_STRIP_ADJACENCY
== PIPE_PRIM_TRIANGLE_STRIP_ADJACENCY
);
547 /* Avoid quadstrips if it's easy to do so:
548 * Note: it's important to do the correct trimming if we change the
549 * prim type! We do that wherever this function is called.
551 if (prim
== GL_QUAD_STRIP
&&
552 ctx
->Light
.ShadeModel
!= GL_FLAT
&&
553 ctx
->Polygon
.FrontMode
== GL_FILL
&&
554 ctx
->Polygon
.BackMode
== GL_FILL
)
555 prim
= GL_TRIANGLE_STRIP
;
562 st_validate_varrays(struct gl_context
*ctx
,
563 const struct gl_client_array
**arrays
,
565 unsigned num_instances
)
567 struct st_context
*st
= st_context(ctx
);
568 const struct st_vertex_program
*vp
;
569 const struct st_vp_variant
*vpv
;
570 struct pipe_vertex_buffer vbuffer
[PIPE_MAX_SHADER_INPUTS
];
571 struct pipe_vertex_element velements
[PIPE_MAX_ATTRIBS
];
572 unsigned num_vbuffers
, num_velements
;
576 /* must get these after state validation! */
578 vpv
= st
->vp_variant
;
580 memset(velements
, 0, sizeof(struct pipe_vertex_element
) * vpv
->num_inputs
);
582 /* Unreference any user vertex buffers. */
583 for (i
= 0; i
< st
->num_user_attribs
; i
++) {
584 pipe_resource_reference(&st
->user_attrib
[i
].buffer
, NULL
);
586 st
->num_user_attribs
= 0;
589 * Setup the vbuffer[] and velements[] arrays.
591 if (is_interleaved_arrays(vp
, vpv
, arrays
)) {
592 setup_interleaved_attribs(ctx
, vp
, vpv
, arrays
, vbuffer
, velements
,
593 max_index
, num_instances
);
596 num_velements
= vpv
->num_inputs
;
597 if (num_velements
== 0)
601 setup_non_interleaved_attribs(ctx
, vp
, vpv
, arrays
,
602 vbuffer
, velements
, max_index
,
604 num_vbuffers
= vpv
->num_inputs
;
605 num_velements
= vpv
->num_inputs
;
608 cso_set_vertex_buffers(st
->cso_context
, num_vbuffers
, vbuffer
);
609 cso_set_vertex_elements(st
->cso_context
, num_velements
, velements
);
611 /* unreference buffers (frees wrapped user-space buffer objects)
612 * This is OK, because the pipe driver should reference buffers by itself
613 * in set_vertex_buffers. */
614 for (attr
= 0; attr
< num_vbuffers
; attr
++) {
615 pipe_resource_reference(&vbuffer
[attr
].buffer
, NULL
);
616 assert(!vbuffer
[attr
].buffer
);
622 * This function gets plugged into the VBO module and is called when
623 * we have something to render.
624 * Basically, translate the information into the format expected by gallium.
627 st_draw_vbo(struct gl_context
*ctx
,
628 const struct gl_client_array
**arrays
,
629 const struct _mesa_prim
*prims
,
631 const struct _mesa_index_buffer
*ib
,
632 GLboolean index_bounds_valid
,
636 struct st_context
*st
= st_context(ctx
);
637 struct pipe_context
*pipe
= st
->pipe
;
638 struct pipe_index_buffer ibuffer
;
639 struct pipe_draw_info info
;
640 unsigned i
, num_instances
= 1;
641 GLboolean new_array
=
643 (st
->dirty
.mesa
& (_NEW_ARRAY
| _NEW_PROGRAM
| _NEW_BUFFER_OBJECT
)) != 0;
645 /* Mesa core state should have been validated already */
646 assert(ctx
->NewState
== 0x0);
649 /* Gallium probably doesn't want this in some cases. */
650 if (!index_bounds_valid
)
651 if (!vbo_all_varyings_in_vbos(arrays
))
652 vbo_get_minmax_index(ctx
, prims
, ib
, &min_index
, &max_index
);
654 for (i
= 0; i
< nr_prims
; i
++) {
655 num_instances
= MAX2(num_instances
, prims
[i
].num_instances
);
659 /* Get min/max index for non-indexed drawing. */
663 for (i
= 0; i
< nr_prims
; i
++) {
664 min_index
= MIN2(min_index
, prims
[i
].start
);
665 max_index
= MAX2(max_index
, prims
[i
].start
+ prims
[i
].count
- 1);
666 num_instances
= MAX2(num_instances
, prims
[i
].num_instances
);
670 /* Validate state. */
672 GLboolean vertDataEdgeFlags
;
674 /* sanity check for pointer arithmetic below */
675 assert(sizeof(arrays
[0]->Ptr
[0]) == 1);
677 vertDataEdgeFlags
= arrays
[VERT_ATTRIB_EDGEFLAG
]->BufferObj
&&
678 arrays
[VERT_ATTRIB_EDGEFLAG
]->BufferObj
->Name
;
679 if (vertDataEdgeFlags
!= st
->vertdata_edgeflags
) {
680 st
->vertdata_edgeflags
= vertDataEdgeFlags
;
681 st
->dirty
.st
|= ST_NEW_EDGEFLAGS_DATA
;
684 st_validate_state(st
);
687 st_validate_varrays(ctx
, arrays
, max_index
, num_instances
);
691 if (MESA_VERBOSE
& VERBOSE_GLSL
) {
695 (void) check_uniforms
;
699 /* Notify the driver that the content of user buffers may have been
701 assert(max_index
>= min_index
);
702 if (!new_array
&& st
->num_user_attribs
) {
703 for (i
= 0; i
< st
->num_user_attribs
; i
++) {
704 if (st
->user_attrib
[i
].buffer
) {
705 unsigned element_size
= st
->user_attrib
[i
].element_size
;
706 unsigned stride
= st
->user_attrib
[i
].stride
;
707 unsigned min_offset
= min_index
* stride
;
708 unsigned max_offset
= max_index
* stride
+ element_size
;
710 assert(max_offset
> min_offset
);
712 pipe
->redefine_user_buffer(pipe
, st
->user_attrib
[i
].buffer
,
714 max_offset
- min_offset
);
719 setup_index_buffer(ctx
, ib
, &ibuffer
);
720 pipe
->set_index_buffer(pipe
, &ibuffer
);
722 util_draw_init_info(&info
);
725 if (min_index
!= ~0 && max_index
!= ~0) {
726 info
.min_index
= min_index
;
727 info
.max_index
= max_index
;
731 info
.primitive_restart
= st
->ctx
->Array
.PrimitiveRestart
;
732 info
.restart_index
= st
->ctx
->Array
.RestartIndex
;
734 /* do actual drawing */
735 for (i
= 0; i
< nr_prims
; i
++) {
736 info
.mode
= translate_prim( ctx
, prims
[i
].mode
);
737 info
.start
= prims
[i
].start
;
738 info
.count
= prims
[i
].count
;
739 info
.instance_count
= prims
[i
].num_instances
;
740 info
.index_bias
= prims
[i
].basevertex
;
742 info
.min_index
= info
.start
;
743 info
.max_index
= info
.start
+ info
.count
- 1;
746 if (u_trim_pipe_prim(info
.mode
, &info
.count
))
747 pipe
->draw_vbo(pipe
, &info
);
750 pipe_resource_reference(&ibuffer
.buffer
, NULL
);
755 st_init_draw(struct st_context
*st
)
757 struct gl_context
*ctx
= st
->ctx
;
759 vbo_set_draw_func(ctx
, st_draw_vbo
);
761 #if FEATURE_feedback || FEATURE_rastpos
762 st
->draw
= draw_create(st
->pipe
); /* for selection/feedback */
764 /* Disable draw options that might convert points/lines to tris, etc.
765 * as that would foul-up feedback/selection mode.
767 draw_wide_line_threshold(st
->draw
, 1000.0f
);
768 draw_wide_point_threshold(st
->draw
, 1000.0f
);
769 draw_enable_line_stipple(st
->draw
, FALSE
);
770 draw_enable_point_sprites(st
->draw
, FALSE
);
776 st_destroy_draw(struct st_context
*st
)
778 #if FEATURE_feedback || FEATURE_rastpos
779 draw_destroy(st
->draw
);