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 **************************************************************************/
30 * Build post-transformation, post-clipping vertex buffers and element
31 * lists by hooking into the end of the primitive pipeline and
32 * manipulating the vertex_id field in the vertex headers.
34 * XXX: work in progress
36 * \author José Fonseca <jrfonseca@tungstengraphics.com>
37 * \author Keith Whitwell <keith@tungstengraphics.com>
41 #include "pipe/p_debug.h"
42 #include "pipe/p_inlines.h"
43 #include "pipe/p_winsys.h"
45 #include "nv20_context.h"
46 #include "nv20_state.h"
48 #include "draw/draw_vbuf.h"
51 * Primitive renderer for nv20.
53 struct nv20_vbuf_render
{
54 struct vbuf_render base
;
56 struct nv20_context
*nv20
;
59 struct pipe_buffer
* buffer
;
61 /** Vertex size in bytes */
64 /** Hardware primitive */
69 void nv20_vtxbuf_bind( struct nv20_context
* nv20
)
72 for(i
= 0; i
< 8; i
++) {
73 BEGIN_RING(kelvin
, NV10TCL_VERTEX_ARRAY_ATTRIB_OFFSET(i
), 1);
74 OUT_RING(0/*nv20->vtxbuf*/);
75 BEGIN_RING(kelvin
, NV10TCL_VERTEX_ARRAY_ATTRIB_FORMAT(i
) ,1);
81 * Basically a cast wrapper.
83 static INLINE
struct nv20_vbuf_render
*
84 nv20_vbuf_render( struct vbuf_render
*render
)
87 return (struct nv20_vbuf_render
*)render
;
91 static const struct vertex_info
*
92 nv20_vbuf_render_get_vertex_info( struct vbuf_render
*render
)
94 struct nv20_vbuf_render
*nv20_render
= nv20_vbuf_render(render
);
95 struct nv20_context
*nv20
= nv20_render
->nv20
;
97 nv20_emit_hw_state(nv20
);
99 return &nv20
->vertex_info
;
104 nv20_vbuf_render_allocate_vertices( struct vbuf_render
*render
,
108 struct nv20_vbuf_render
*nv20_render
= nv20_vbuf_render(render
);
109 struct nv20_context
*nv20
= nv20_render
->nv20
;
110 struct pipe_winsys
*winsys
= nv20
->pipe
.winsys
;
111 size_t size
= (size_t)vertex_size
* (size_t)nr_vertices
;
113 assert(!nv20_render
->buffer
);
114 nv20_render
->buffer
= winsys
->buffer_create(winsys
, 64, PIPE_BUFFER_USAGE_VERTEX
, size
);
116 nv20
->dirty
|= NV20_NEW_VTXARRAYS
;
118 return winsys
->buffer_map(winsys
,
120 PIPE_BUFFER_USAGE_CPU_WRITE
);
125 nv20_vbuf_render_set_primitive( struct vbuf_render
*render
,
128 struct nv20_vbuf_render
*nv20_render
= nv20_vbuf_render(render
);
129 nv20_render
->hwprim
= prim
+ 1;
134 nv20_vbuf_render_draw( struct vbuf_render
*render
,
135 const ushort
*indices
,
138 struct nv20_vbuf_render
*nv20_render
= nv20_vbuf_render(render
);
139 struct nv20_context
*nv20
= nv20_render
->nv20
;
142 nv20_emit_hw_state(nv20
);
144 BEGIN_RING(kelvin
, NV10TCL_VERTEX_ARRAY_OFFSET_POS
, 1);
145 OUT_RELOCl(nv20_render
->buffer
, 0, NOUVEAU_BO_VRAM
| NOUVEAU_BO_GART
| NOUVEAU_BO_RD
);
147 BEGIN_RING(kelvin
, NV10TCL_VERTEX_BUFFER_BEGIN_END
, 1);
148 OUT_RING(nv20_render
->hwprim
);
150 if (nr_indices
& 1) {
151 BEGIN_RING(kelvin
, NV10TCL_VB_ELEMENT_U32
, 1);
152 OUT_RING (indices
[0]);
153 indices
++; nr_indices
--;
157 // XXX too big/small ? check the size
158 push
= MIN2(nr_indices
, 1200 * 2);
160 BEGIN_RING_NI(kelvin
, NV10TCL_VB_ELEMENT_U16
, push
>> 1);
161 for (i
= 0; i
< push
; i
+=2)
162 OUT_RING((indices
[i
+1] << 16) | indices
[i
]);
168 BEGIN_RING(kelvin
, NV10TCL_VERTEX_BUFFER_BEGIN_END
, 1);
174 nv20_vbuf_render_release_vertices( struct vbuf_render
*render
,
176 unsigned vertex_size
,
177 unsigned vertices_used
)
179 struct nv20_vbuf_render
*nv20_render
= nv20_vbuf_render(render
);
180 struct nv20_context
*nv20
= nv20_render
->nv20
;
181 struct pipe_winsys
*winsys
= nv20
->pipe
.winsys
;
182 struct pipe_screen
*pscreen
= &nv20
->screen
->pipe
;
184 assert(nv20_render
->buffer
);
185 winsys
->buffer_unmap(winsys
, nv20_render
->buffer
);
186 pipe_buffer_reference(pscreen
, &nv20_render
->buffer
, NULL
);
191 nv20_vbuf_render_destroy( struct vbuf_render
*render
)
193 struct nv20_vbuf_render
*nv20_render
= nv20_vbuf_render(render
);
199 * Create a new primitive render.
201 static struct vbuf_render
*
202 nv20_vbuf_render_create( struct nv20_context
*nv20
)
204 struct nv20_vbuf_render
*nv20_render
= CALLOC_STRUCT(nv20_vbuf_render
);
206 nv20_render
->nv20
= nv20
;
208 nv20_render
->base
.max_vertex_buffer_bytes
= 16*1024;
209 nv20_render
->base
.max_indices
= 1024;
210 nv20_render
->base
.get_vertex_info
= nv20_vbuf_render_get_vertex_info
;
211 nv20_render
->base
.allocate_vertices
= nv20_vbuf_render_allocate_vertices
;
212 nv20_render
->base
.set_primitive
= nv20_vbuf_render_set_primitive
;
213 nv20_render
->base
.draw
= nv20_vbuf_render_draw
;
214 nv20_render
->base
.release_vertices
= nv20_vbuf_render_release_vertices
;
215 nv20_render
->base
.destroy
= nv20_vbuf_render_destroy
;
217 return &nv20_render
->base
;
222 * Create a new primitive vbuf/render stage.
224 struct draw_stage
*nv20_draw_vbuf_stage( struct nv20_context
*nv20
)
226 struct vbuf_render
*render
;
227 struct draw_stage
*stage
;
229 render
= nv20_vbuf_render_create(nv20
);
233 stage
= draw_vbuf_stage( nv20
->draw
, render
);
235 render
->destroy(render
);