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 * Vertex buffer code. The draw module transforms vertices to window
30 * coords, etc. and emits the vertices into buffer supplied by this module.
31 * When a vertex buffer is full, or we flush, we'll send the vertex data
39 #include "cell_batch.h"
40 #include "cell_context.h"
41 #include "cell_flush.h"
43 #include "cell_vbuf.h"
44 #include "draw/draw_vbuf.h"
45 #include "util/u_memory.h"
48 /** Allow vertex data to be inlined after RENDER command */
49 #define ALLOW_INLINE_VERTS 1
53 * Subclass of vbuf_render because we need a cell_context pointer in
56 struct cell_vbuf_render
58 struct vbuf_render base
;
59 struct cell_context
*cell
;
60 uint prim
; /**< PIPE_PRIM_x */
61 uint vertex_size
; /**< in bytes */
62 void *vertex_buffer
; /**< just for debug, really */
63 uint vertex_buf
; /**< in [0, CELL_NUM_BUFFERS-1] */
68 static struct cell_vbuf_render
*
69 cell_vbuf_render(struct vbuf_render
*vbr
)
71 return (struct cell_vbuf_render
*) vbr
;
76 static const struct vertex_info
*
77 cell_vbuf_get_vertex_info(struct vbuf_render
*vbr
)
79 struct cell_vbuf_render
*cvbr
= cell_vbuf_render(vbr
);
80 return &cvbr
->cell
->vertex_info
;
85 cell_vbuf_allocate_vertices(struct vbuf_render
*vbr
,
86 ushort vertex_size
, ushort nr_vertices
)
88 struct cell_vbuf_render
*cvbr
= cell_vbuf_render(vbr
);
89 /*printf("Alloc verts %u * %u\n", vertex_size, nr_vertices);*/
91 assert(cvbr
->vertex_buf
== ~0);
92 cvbr
->vertex_buf
= cell_get_empty_buffer(cvbr
->cell
);
93 cvbr
->vertex_buffer
= cvbr
->cell
->buffer
[cvbr
->vertex_buf
];
94 cvbr
->vertex_size
= vertex_size
;
95 return cvbr
->vertex_buffer
;
100 cell_vbuf_release_vertices(struct vbuf_render
*vbr
, void *vertices
,
101 unsigned vertex_size
, unsigned vertices_used
)
103 struct cell_vbuf_render
*cvbr
= cell_vbuf_render(vbr
);
104 struct cell_context
*cell
= cvbr
->cell
;
107 printf("%s vertex_buf = %u count = %u\n",
108 __FUNCTION__, cvbr->vertex_buf, vertices_used);
111 /* Tell SPUs they can release the vert buf */
112 if (cvbr
->vertex_buf
!= ~0U) {
113 struct cell_command_release_verts
*release
114 = (struct cell_command_release_verts
*)
115 cell_batch_alloc(cell
, sizeof(struct cell_command_release_verts
));
116 release
->opcode
= CELL_CMD_RELEASE_VERTS
;
117 release
->vertex_buf
= cvbr
->vertex_buf
;
120 cvbr
->vertex_buf
= ~0;
121 cell_flush_int(cell
, 0x0);
123 assert(vertices
== cvbr
->vertex_buffer
);
124 cvbr
->vertex_buffer
= NULL
;
130 cell_vbuf_set_primitive(struct vbuf_render
*vbr
, unsigned prim
)
132 struct cell_vbuf_render
*cvbr
= cell_vbuf_render(vbr
);
134 /*printf("cell_set_prim %u\n", prim);*/
140 cell_vbuf_draw(struct vbuf_render
*vbr
,
141 const ushort
*indices
,
144 struct cell_vbuf_render
*cvbr
= cell_vbuf_render(vbr
);
145 struct cell_context
*cell
= cvbr
->cell
;
146 float xmin
, ymin
, xmax
, ymax
;
148 uint nr_vertices
= 0, min_index
= ~0;
149 const void *vertices
= cvbr
->vertex_buffer
;
150 const uint vertex_size
= cvbr
->vertex_size
;
152 for (i
= 0; i
< nr_indices
; i
++) {
153 if (indices
[i
] > nr_vertices
)
154 nr_vertices
= indices
[i
];
155 if (indices
[i
] < min_index
)
156 min_index
= indices
[i
];
161 /*if (min_index > 0)*/
162 printf("%s min_index = %u\n", __FUNCTION__
, min_index
);
166 printf("cell_vbuf_draw() nr_indices = %u nr_verts = %u\n",
167 nr_indices
, nr_vertices
);
169 for (i
= 0; i
< nr_indices
; i
+= 3) {
170 printf("%u %u %u, ", indices
[i
+0], indices
[i
+1], indices
[i
+2]);
174 printf("cell_vbuf_draw() nr_indices = %u nr_verts = %u indexes = [%u %u %u ...]\n",
175 nr_indices
, nr_vertices
,
176 indices
[0], indices
[1], indices
[2]);
177 printf("ind space = %u, vert space = %u, space = %u\n",
179 nr_vertices
* 4 * cell
->vertex_info
.size
,
180 cell_batch_free_space(cell
));
183 /* compute x/y bounding box */
186 for (i
= min_index
; i
< nr_vertices
; i
++) {
187 const float *v
= (float *) ((ubyte
*) vertices
+ i
* vertex_size
);
198 printf("PPU Bounds %g, %g .. %g, %g\n", xmin
, ymin
, xmax
, ymax
);
202 if (cvbr
->prim
!= PIPE_PRIM_TRIANGLES
)
203 return; /* only render tris for now */
205 /* build/insert batch RENDER command */
207 const uint index_bytes
= ROUNDUP8(nr_indices
* 2);
208 const uint vertex_bytes
= nr_vertices
* 4 * cell
->vertex_info
.size
;
209 const uint batch_size
= sizeof(struct cell_command_render
) + index_bytes
;
211 struct cell_command_render
*render
212 = (struct cell_command_render
*)
213 cell_batch_alloc(cell
, batch_size
);
215 render
->opcode
= CELL_CMD_RENDER
;
216 render
->prim_type
= cvbr
->prim
;
218 render
->num_indexes
= nr_indices
;
219 render
->min_index
= min_index
;
221 /* append indices after render command */
222 memcpy(render
+ 1, indices
, nr_indices
* 2);
224 /* if there's room, append vertices after the indices, else leave
225 * vertices in the original/separate buffer.
227 render
->vertex_size
= 4 * cell
->vertex_info
.size
;
228 render
->num_verts
= nr_vertices
;
229 if (ALLOW_INLINE_VERTS
&&
231 vertex_bytes
+ 16 <= cell_batch_free_space(cell
)) {
232 /* vertex data inlined, after indices, at 16-byte boundary */
233 void *dst
= cell_batch_alloc_aligned(cell
, vertex_bytes
, 16);
234 memcpy(dst
, vertices
, vertex_bytes
);
235 render
->inline_verts
= TRUE
;
236 render
->vertex_buf
= ~0;
239 /* vertex data in separate buffer */
240 render
->inline_verts
= FALSE
;
241 ASSERT(cvbr
->vertex_buf
>= 0);
242 render
->vertex_buf
= cvbr
->vertex_buf
;
252 /* helpful for debug */
253 cell_flush_int(cell
, CELL_FLUSH_WAIT
);
259 cell_vbuf_destroy(struct vbuf_render
*vbr
)
261 struct cell_vbuf_render
*cvbr
= cell_vbuf_render(vbr
);
262 cvbr
->cell
->vbuf_render
= NULL
;
268 * Initialize the post-transform vertex buffer information for the given
272 cell_init_vbuf(struct cell_context
*cell
)
276 cell
->vbuf_render
= CALLOC_STRUCT(cell_vbuf_render
);
278 /* The max number of indexes is what can fix into a batch buffer,
279 * minus the render and release-verts commands.
281 cell
->vbuf_render
->base
.max_indices
283 - sizeof(struct cell_command_render
)
284 - sizeof(struct cell_command_release_verts
))
286 cell
->vbuf_render
->base
.max_vertex_buffer_bytes
= CELL_BUFFER_SIZE
;
288 cell
->vbuf_render
->base
.get_vertex_info
= cell_vbuf_get_vertex_info
;
289 cell
->vbuf_render
->base
.allocate_vertices
= cell_vbuf_allocate_vertices
;
290 cell
->vbuf_render
->base
.set_primitive
= cell_vbuf_set_primitive
;
291 cell
->vbuf_render
->base
.draw
= cell_vbuf_draw
;
292 cell
->vbuf_render
->base
.release_vertices
= cell_vbuf_release_vertices
;
293 cell
->vbuf_render
->base
.destroy
= cell_vbuf_destroy
;
295 cell
->vbuf_render
->cell
= cell
;
297 cell
->vbuf_render
->vertex_buf
= ~0;
300 cell
->vbuf
= draw_vbuf_stage(cell
->draw
, &cell
->vbuf_render
->base
);