src/gallium/drivers/nv10/nv10_prim_vbuf.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   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:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  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.
  25  *
  26  **************************************************************************/
  27
  28 /**
  29  * \file
  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.
  33  *
  34  * XXX: work in progress
  35  *
  36  * \author José Fonseca <jrfonseca@tungstengraphics.com>
  37  * \author Keith Whitwell <keith@tungstengraphics.com>
  38  */
  39
  40
  41 #include "pipe/p_debug.h"
  42 #include "pipe/p_inlines.h"
  43 #include "pipe/internal/p_winsys_screen.h"
  44
  45 #include "nv10_context.h"
  46 #include "nv10_state.h"
  47
  48 #include "draw/draw_vbuf.h"
  49
  50 /**
  51  * Primitive renderer for nv10.
  52  */
  53 struct nv10_vbuf_render {
  54         struct vbuf_render base;
  55
  56         struct nv10_context *nv10;
  57
  58         /** Vertex buffer */
  59         struct pipe_buffer* buffer;
  60
  61         /** Vertex size in bytes */
  62         unsigned vertex_size;
  63
  64         /** Hardware primitive */
  65         unsigned hwprim;
  66 };
  67
  68
  69 void nv10_vtxbuf_bind( struct nv10_context* nv10 )
  70 {
  71         int i;
  72         for(i = 0; i < 8; i++) {
  73                 BEGIN_RING(celsius, NV10TCL_VERTEX_ARRAY_ATTRIB_OFFSET(i), 1);
  74                 OUT_RING(0/*nv10->vtxbuf*/);
  75                 BEGIN_RING(celsius, NV10TCL_VERTEX_ARRAY_ATTRIB_FORMAT(i) ,1);
  76                 OUT_RING(0/*XXX*/);
  77         }
  78 }
  79
  80 /**
  81  * Basically a cast wrapper.
  82  */
  83 static INLINE struct nv10_vbuf_render *
  84 nv10_vbuf_render( struct vbuf_render *render )
  85 {
  86         assert(render);
  87         return (struct nv10_vbuf_render *)render;
  88 }
  89
  90
  91 static const struct vertex_info *
  92 nv10_vbuf_render_get_vertex_info( struct vbuf_render *render )
  93 {
  94         struct nv10_vbuf_render *nv10_render = nv10_vbuf_render(render);
  95         struct nv10_context *nv10 = nv10_render->nv10;
  96
  97         nv10_emit_hw_state(nv10);
  98
  99         return &nv10->vertex_info;
 100 }
 101
 102
 103 static void *
 104 nv10_vbuf_render_allocate_vertices( struct vbuf_render *render,
 105                 ushort vertex_size,
 106                 ushort nr_vertices )
 107 {
 108         struct nv10_vbuf_render *nv10_render = nv10_vbuf_render(render);
 109         struct nv10_context *nv10 = nv10_render->nv10;
 110         struct pipe_winsys *winsys = nv10->pipe.winsys;
 111         size_t size = (size_t)vertex_size * (size_t)nr_vertices;
 112
 113         assert(!nv10_render->buffer);
 114         nv10_render->buffer = winsys->buffer_create(winsys, 64, PIPE_BUFFER_USAGE_VERTEX, size);
 115
 116         nv10->dirty |= NV10_NEW_VTXARRAYS;
 117
 118         return winsys->buffer_map(winsys,
 119                         nv10_render->buffer,
 120                         PIPE_BUFFER_USAGE_CPU_WRITE);
 121 }
 122
 123
 124 static boolean
 125 nv10_vbuf_render_set_primitive( struct vbuf_render *render,
 126                 unsigned prim )
 127 {
 128         struct nv10_vbuf_render *nv10_render = nv10_vbuf_render(render);
 129         unsigned hwp = nvgl_primitive(prim);
 130         if (hwp == 0)
 131                 return FALSE;
 132
 133         nv10_render->hwprim = hwp;
 134         return TRUE;
 135 }
 136
 137
 138 static void
 139 nv10_vbuf_render_draw( struct vbuf_render *render,
 140                 const ushort *indices,
 141                 uint nr_indices)
 142 {
 143         struct nv10_vbuf_render *nv10_render = nv10_vbuf_render(render);
 144         struct nv10_context *nv10 = nv10_render->nv10;
 145         int push, i;
 146
 147         nv10_emit_hw_state(nv10);
 148
 149         BEGIN_RING(celsius, NV10TCL_VERTEX_ARRAY_OFFSET_POS, 1);
 150         OUT_RELOCl(nv10_render->buffer, 0, NOUVEAU_BO_VRAM | NOUVEAU_BO_GART | NOUVEAU_BO_RD);
 151
 152         BEGIN_RING(celsius, NV10TCL_VERTEX_BUFFER_BEGIN_END, 1);
 153         OUT_RING(nv10_render->hwprim);
 154
 155         if (nr_indices & 1) {
 156                 BEGIN_RING(celsius, NV10TCL_VB_ELEMENT_U32, 1);
 157                 OUT_RING  (indices[0]);
 158                 indices++; nr_indices--;
 159         }
 160
 161         while (nr_indices) {
 162                 // XXX too big/small ? check the size
 163                 push = MIN2(nr_indices, 1200 * 2);
 164
 165                 BEGIN_RING_NI(celsius, NV10TCL_VB_ELEMENT_U16, push >> 1);
 166                 for (i = 0; i < push; i+=2)
 167                         OUT_RING((indices[i+1] << 16) | indices[i]);
 168
 169                 nr_indices -= push;
 170                 indices  += push;
 171         }
 172
 173         BEGIN_RING(celsius, NV10TCL_VERTEX_BUFFER_BEGIN_END, 1);
 174         OUT_RING  (0);
 175 }
 176
 177
 178 static void
 179 nv10_vbuf_render_release_vertices( struct vbuf_render *render,
 180                 void *vertices,
 181                 unsigned vertex_size,
 182                 unsigned vertices_used )
 183 {
 184         struct nv10_vbuf_render *nv10_render = nv10_vbuf_render(render);
 185         struct nv10_context *nv10 = nv10_render->nv10;
 186         struct pipe_winsys *winsys = nv10->pipe.winsys;
 187         struct pipe_screen *pscreen = &nv10->screen->pipe;
 188
 189         assert(nv10_render->buffer);
 190         winsys->buffer_unmap(winsys, nv10_render->buffer);
 191         pipe_buffer_reference(pscreen, &nv10_render->buffer, NULL);
 192 }
 193
 194
 195 static void
 196 nv10_vbuf_render_destroy( struct vbuf_render *render )
 197 {
 198         struct nv10_vbuf_render *nv10_render = nv10_vbuf_render(render);
 199         FREE(nv10_render);
 200 }
 201
 202
 203 /**
 204  * Create a new primitive render.
 205  */
 206 static struct vbuf_render *
 207 nv10_vbuf_render_create( struct nv10_context *nv10 )
 208 {
 209         struct nv10_vbuf_render *nv10_render = CALLOC_STRUCT(nv10_vbuf_render);
 210
 211         nv10_render->nv10 = nv10;
 212
 213         nv10_render->base.max_vertex_buffer_bytes = 16*1024;
 214         nv10_render->base.max_indices = 1024;
 215         nv10_render->base.get_vertex_info = nv10_vbuf_render_get_vertex_info;
 216         nv10_render->base.allocate_vertices = nv10_vbuf_render_allocate_vertices;
 217         nv10_render->base.set_primitive = nv10_vbuf_render_set_primitive;
 218         nv10_render->base.draw = nv10_vbuf_render_draw;
 219         nv10_render->base.release_vertices = nv10_vbuf_render_release_vertices;
 220         nv10_render->base.destroy = nv10_vbuf_render_destroy;
 221
 222         return &nv10_render->base;
 223 }
 224
 225
 226 /**
 227  * Create a new primitive vbuf/render stage.
 228  */
 229 struct draw_stage *nv10_draw_vbuf_stage( struct nv10_context *nv10 )
 230 {
 231         struct vbuf_render *render;
 232         struct draw_stage *stage;
 233
 234         render = nv10_vbuf_render_create(nv10);
 235         if(!render)
 236                 return NULL;
 237
 238         stage = draw_vbuf_stage( nv10->draw, render );
 239         if(!stage) {
 240                 render->destroy(render);
 241                 return NULL;
 242         }
 243
 244         return stage;
 245 }