src/gallium/drivers/svga/svga_context.c

   1 /**********************************************************
   2  * Copyright 2008-2009 VMware, Inc.  All rights reserved.
   3  *
   4  * Permission is hereby granted, free of charge, to any person
   5  * obtaining a copy of this software and associated documentation
   6  * files (the "Software"), to deal in the Software without
   7  * restriction, including without limitation the rights to use, copy,
   8  * modify, merge, publish, distribute, sublicense, and/or sell copies
   9  * of the Software, and to permit persons to whom the Software is
  10  * furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be
  13  * included in all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  19  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  20  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  21  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  *
  24  **********************************************************/
  25
  26 #include "svga_cmd.h"
  27
  28 #include "pipe/p_defines.h"
  29 #include "util/u_inlines.h"
  30 #include "pipe/p_screen.h"
  31 #include "util/u_memory.h"
  32 #include "util/u_bitmask.h"
  33 #include "util/u_upload_mgr.h"
  34
  35 #include "svga_context.h"
  36 #include "svga_screen.h"
  37 #include "svga_screen_texture.h"
  38 #include "svga_screen_buffer.h"
  39 #include "svga_winsys.h"
  40 #include "svga_swtnl.h"
  41 #include "svga_draw.h"
  42 #include "svga_debug.h"
  43 #include "svga_state.h"
  44
  45
  46 static void svga_destroy( struct pipe_context *pipe )
  47 {
  48    struct svga_context *svga = svga_context( pipe );
  49    unsigned shader;
  50
  51    svga_cleanup_framebuffer( svga );
  52    svga_cleanup_tss_binding( svga );
  53
  54    svga_hwtnl_destroy( svga->hwtnl );
  55
  56    svga_cleanup_vertex_state(svga);
  57
  58    svga->swc->destroy(svga->swc);
  59
  60    svga_destroy_swtnl( svga );
  61
  62    u_upload_destroy( svga->upload_vb );
  63    u_upload_destroy( svga->upload_ib );
  64
  65    util_bitmask_destroy( svga->vs_bm );
  66    util_bitmask_destroy( svga->fs_bm );
  67
  68    for(shader = 0; shader < PIPE_SHADER_TYPES; ++shader)
  69       pipe_buffer_reference( &svga->curr.cb[shader], NULL );
  70
  71    FREE( svga );
  72 }
  73
  74 static unsigned int
  75 svga_is_texture_referenced( struct pipe_context *pipe,
  76                             struct pipe_texture *texture,
  77                             unsigned face, unsigned level)
  78 {
  79    struct svga_texture *tex = svga_texture(texture);
  80    struct svga_screen *ss = svga_screen(pipe->screen);
  81
  82    /**
  83     * The screen does not cache texture writes.
  84     */
  85
  86    if (!tex->handle || ss->sws->surface_is_flushed(ss->sws, tex->handle))
  87       return PIPE_UNREFERENCED;
  88
  89    /**
  90     * sws->surface_is_flushed() does not distinguish between read references
  91     * and write references. So assume a reference is both.
  92     */
  93
  94    return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
  95 }
  96
  97 static unsigned int
  98 svga_is_buffer_referenced( struct pipe_context *pipe,
  99                            struct pipe_buffer *buf)
 100
 101 {
 102    struct svga_screen *ss = svga_screen(pipe->screen);
 103    struct svga_buffer *sbuf = svga_buffer(buf);
 104
 105    /**
 106     * XXX: Check this.
 107     * The screen may cache buffer writes, but when we map, we map out
 108     * of those cached writes, so we don't need to set a
 109     * PIPE_REFERENCED_FOR_WRITE flag for cached buffers.
 110     */
 111
 112    if (!sbuf->handle || ss->sws->surface_is_flushed(ss->sws, sbuf->handle))
 113      return PIPE_UNREFERENCED;
 114
 115    /**
 116     * sws->surface_is_flushed() does not distinguish between read references
 117     * and write references. So assume a reference is both,
 118     * however, we make an exception for index- and vertex buffers, to avoid
 119     * a flush in st_bufferobj_get_subdata, during display list replay.
 120     */
 121
 122    if (sbuf->base.usage & (PIPE_BUFFER_USAGE_VERTEX | PIPE_BUFFER_USAGE_INDEX))
 123       return PIPE_REFERENCED_FOR_READ;
 124
 125    return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
 126 }
 127
 128
 129 struct pipe_context *svga_context_create( struct pipe_screen *screen )
 130 {
 131    struct svga_screen *svgascreen = svga_screen(screen);
 132    struct svga_context *svga = NULL;
 133    enum pipe_error ret;
 134
 135    svga = CALLOC_STRUCT(svga_context);
 136    if (svga == NULL)
 137       goto no_svga;
 138
 139    svga->pipe.winsys = screen->winsys;
 140    svga->pipe.screen = screen;
 141    svga->pipe.destroy = svga_destroy;
 142    svga->pipe.clear = svga_clear;
 143
 144    svga->pipe.is_texture_referenced = svga_is_texture_referenced;
 145    svga->pipe.is_buffer_referenced = svga_is_buffer_referenced;
 146
 147    svga->swc = svgascreen->sws->context_create(svgascreen->sws);
 148    if(!svga->swc)
 149       goto no_swc;
 150
 151    svga_init_blend_functions(svga);
 152    svga_init_blit_functions(svga);
 153    svga_init_depth_stencil_functions(svga);
 154    svga_init_draw_functions(svga);
 155    svga_init_flush_functions(svga);
 156    svga_init_misc_functions(svga);
 157    svga_init_rasterizer_functions(svga);
 158    svga_init_sampler_functions(svga);
 159    svga_init_fs_functions(svga);
 160    svga_init_vs_functions(svga);
 161    svga_init_vertex_functions(svga);
 162    svga_init_constbuffer_functions(svga);
 163    svga_init_query_functions(svga);
 164
 165    /* debug */
 166    svga->debug.no_swtnl = debug_get_bool_option("SVGA_NO_SWTNL", FALSE);
 167    svga->debug.force_swtnl = debug_get_bool_option("SVGA_FORCE_SWTNL", FALSE);
 168    svga->debug.use_min_mipmap = debug_get_bool_option("SVGA_USE_MIN_MIPMAP", FALSE);
 169    svga->debug.disable_shader = debug_get_num_option("SVGA_DISABLE_SHADER", ~0);
 170
 171    if (!svga_init_swtnl(svga))
 172       goto no_swtnl;
 173
 174    svga->fs_bm = util_bitmask_create();
 175    if (svga->fs_bm == NULL)
 176       goto no_fs_bm;
 177
 178    svga->vs_bm = util_bitmask_create();
 179    if (svga->vs_bm == NULL)
 180       goto no_vs_bm;
 181
 182    svga->upload_ib = u_upload_create( svga->pipe.screen,
 183                                       32 * 1024,
 184                                       16,
 185                                       PIPE_BUFFER_USAGE_INDEX );
 186    if (svga->upload_ib == NULL)
 187       goto no_upload_ib;
 188
 189    svga->upload_vb = u_upload_create( svga->pipe.screen,
 190                                       128 * 1024,
 191                                       16,
 192                                       PIPE_BUFFER_USAGE_VERTEX );
 193    if (svga->upload_vb == NULL)
 194       goto no_upload_vb;
 195
 196    svga->hwtnl = svga_hwtnl_create( svga,
 197                                     svga->upload_ib,
 198                                     svga->swc );
 199    if (svga->hwtnl == NULL)
 200       goto no_hwtnl;
 201
 202
 203    ret = svga_emit_initial_state( svga );
 204    if (ret)
 205       goto no_state;
 206
 207    /* Avoid shortcircuiting state with initial value of zero.
 208     */
 209    memset(&svga->state.hw_clear, 0xcd, sizeof(svga->state.hw_clear));
 210    memset(&svga->state.hw_clear.framebuffer, 0x0,
 211           sizeof(svga->state.hw_clear.framebuffer));
 212
 213    memset(&svga->state.hw_draw, 0xcd, sizeof(svga->state.hw_draw));
 214    memset(&svga->state.hw_draw.views, 0x0, sizeof(svga->state.hw_draw.views));
 215    svga->state.hw_draw.num_views = 0;
 216
 217    svga->dirty = ~0;
 218
 219    LIST_INITHEAD(&svga->dirty_buffers);
 220
 221    return &svga->pipe;
 222
 223 no_state:
 224    svga_hwtnl_destroy( svga->hwtnl );
 225 no_hwtnl:
 226    u_upload_destroy( svga->upload_vb );
 227 no_upload_vb:
 228    u_upload_destroy( svga->upload_ib );
 229 no_upload_ib:
 230    util_bitmask_destroy( svga->vs_bm );
 231 no_vs_bm:
 232    util_bitmask_destroy( svga->fs_bm );
 233 no_fs_bm:
 234    svga_destroy_swtnl(svga);
 235 no_swtnl:
 236    svga->swc->destroy(svga->swc);
 237 no_swc:
 238    FREE(svga);
 239 no_svga:
 240    return NULL;
 241 }
 242
 243
 244 void svga_context_flush( struct svga_context *svga,
 245                          struct pipe_fence_handle **pfence )
 246 {
 247    struct svga_screen *svgascreen = svga_screen(svga->pipe.screen);
 248
 249    svga->curr.nr_fbs = 0;
 250
 251    /* Unmap upload manager buffers:
 252     */
 253    u_upload_flush(svga->upload_vb);
 254    u_upload_flush(svga->upload_ib);
 255
 256    /* Flush screen, to ensure that texture dma uploads are processed
 257     * before submitting commands.
 258     */
 259    svga_screen_flush(svgascreen, NULL);
 260
 261    svga_context_flush_buffers(svga);
 262
 263    /* Flush pending commands to hardware:
 264     */
 265    svga->swc->flush(svga->swc, pfence);
 266
 267    if (SVGA_DEBUG & DEBUG_SYNC) {
 268       if (pfence && *pfence)
 269          svga->pipe.screen->fence_finish( svga->pipe.screen, *pfence, 0);
 270    }
 271 }
 272
 273
 274 void svga_hwtnl_flush_retry( struct svga_context *svga )
 275 {
 276    enum pipe_error ret = PIPE_OK;
 277
 278    ret = svga_hwtnl_flush( svga->hwtnl );
 279    if (ret == PIPE_ERROR_OUT_OF_MEMORY) {
 280       svga_context_flush( svga, NULL );
 281       ret = svga_hwtnl_flush( svga->hwtnl );
 282    }
 283
 284    assert(ret == 0);
 285 }
 286