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 "pipe/p_inlines.h"
  30 #include "pipe/p_screen.h"
  31 #include "util/u_memory.h"
  32 #include "util/u_upload_mgr.h"
  33
  34 #include "svga_context.h"
  35 #include "svga_screen.h"
  36 #include "svga_screen_texture.h"
  37 #include "svga_screen_buffer.h"
  38 #include "svga_winsys.h"
  39 #include "svga_swtnl.h"
  40 #include "svga_draw.h"
  41 #include "svga_debug.h"
  42 #include "svga_state.h"
  43
  44
  45 static void svga_destroy( struct pipe_context *pipe )
  46 {
  47    struct svga_context *svga = svga_context( pipe );
  48    unsigned shader;
  49
  50    svga_cleanup_framebuffer( svga );
  51    svga_cleanup_tss_binding( svga );
  52
  53    svga_hwtnl_destroy( svga->hwtnl );
  54
  55    svga_cleanup_vertex_state(svga);
  56
  57    svga->swc->destroy(svga->swc);
  58
  59    svga_destroy_swtnl( svga );
  60
  61    u_upload_destroy( svga->upload_vb );
  62    u_upload_destroy( svga->upload_ib );
  63
  64    for(shader = 0; shader < PIPE_SHADER_TYPES; ++shader)
  65       pipe_buffer_reference( &svga->curr.cb[shader], NULL );
  66
  67    FREE( svga );
  68 }
  69
  70 static unsigned int
  71 svga_is_texture_referenced( struct pipe_context *pipe,
  72                             struct pipe_texture *texture,
  73                             unsigned face, unsigned level)
  74 {
  75    struct svga_texture *tex = svga_texture(texture);
  76    struct svga_screen *ss = svga_screen(pipe->screen);
  77
  78    /**
  79     * The screen does not cache texture writes.
  80     */
  81
  82    if (!tex->handle || ss->sws->surface_is_flushed(ss->sws, tex->handle))
  83       return PIPE_UNREFERENCED;
  84
  85    /**
  86     * sws->surface_is_flushed() does not distinguish between read references
  87     * and write references. So assume a reference is both.
  88     */
  89
  90    return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
  91 }
  92
  93 static unsigned int
  94 svga_is_buffer_referenced( struct pipe_context *pipe,
  95                            struct pipe_buffer *buf)
  96
  97 {
  98    struct svga_screen *ss = svga_screen(pipe->screen);
  99    struct svga_buffer *sbuf = svga_buffer(buf);
 100
 101    /**
 102     * XXX: Check this.
 103     * The screen may cache buffer writes, but when we map, we map out
 104     * of those cached writes, so we don't need to set a
 105     * PIPE_REFERENCED_FOR_WRITE flag for cached buffers.
 106     */
 107
 108    if (!sbuf->handle || ss->sws->surface_is_flushed(ss->sws, sbuf->handle))
 109      return PIPE_UNREFERENCED;
 110
 111    /**
 112     * sws->surface_is_flushed() does not distinguish between read references
 113     * and write references. So assume a reference is both,
 114     * however, we make an exception for index- and vertex buffers, to avoid
 115     * a flush in st_bufferobj_get_subdata, during display list replay.
 116     */
 117
 118    if (sbuf->base.usage & (PIPE_BUFFER_USAGE_VERTEX | PIPE_BUFFER_USAGE_INDEX))
 119       return PIPE_REFERENCED_FOR_READ;
 120
 121    return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
 122 }
 123
 124
 125 struct pipe_context *svga_context_create( struct pipe_screen *screen )
 126 {
 127    struct svga_screen *svgascreen = svga_screen(screen);
 128    struct svga_context *svga = NULL;
 129    enum pipe_error ret;
 130
 131    svga = CALLOC_STRUCT(svga_context);
 132    if (svga == NULL)
 133       goto error1;
 134
 135    svga->pipe.winsys = screen->winsys;
 136    svga->pipe.screen = screen;
 137    svga->pipe.destroy = svga_destroy;
 138    svga->pipe.clear = svga_clear;
 139
 140    svga->pipe.is_texture_referenced = svga_is_texture_referenced;
 141    svga->pipe.is_buffer_referenced = svga_is_buffer_referenced;
 142
 143    svga->swc = svgascreen->sws->context_create(svgascreen->sws);
 144    if(!svga->swc)
 145       goto error2;
 146
 147    svga_init_blend_functions(svga);
 148    svga_init_blit_functions(svga);
 149    svga_init_depth_stencil_functions(svga);
 150    svga_init_draw_functions(svga);
 151    svga_init_flush_functions(svga);
 152    svga_init_misc_functions(svga);
 153    svga_init_rasterizer_functions(svga);
 154    svga_init_sampler_functions(svga);
 155    svga_init_fs_functions(svga);
 156    svga_init_vs_functions(svga);
 157    svga_init_vertex_functions(svga);
 158    svga_init_constbuffer_functions(svga);
 159    svga_init_query_functions(svga);
 160
 161    /* debug */
 162    svga->debug.no_swtnl = debug_get_bool_option("SVGA_NO_SWTNL", FALSE);
 163    svga->debug.force_swtnl = debug_get_bool_option("SVGA_FORCE_SWTNL", FALSE);
 164    svga->debug.use_min_mipmap = debug_get_bool_option("SVGA_USE_MIN_MIPMAP", FALSE);
 165    svga->debug.disable_shader = debug_get_num_option("SVGA_DISABLE_SHADER", ~0);
 166
 167    if (!svga_init_swtnl(svga))
 168       goto error3;
 169
 170    svga->upload_ib = u_upload_create( svga->pipe.screen,
 171                                       32 * 1024,
 172                                       16,
 173                                       PIPE_BUFFER_USAGE_INDEX );
 174    if (svga->upload_ib == NULL)
 175       goto error4;
 176
 177    svga->upload_vb = u_upload_create( svga->pipe.screen,
 178                                       128 * 1024,
 179                                       16,
 180                                       PIPE_BUFFER_USAGE_VERTEX );
 181    if (svga->upload_vb == NULL)
 182       goto error5;
 183
 184    svga->hwtnl = svga_hwtnl_create( svga,
 185                                     svga->upload_ib,
 186                                     svga->swc );
 187    if (svga->hwtnl == NULL)
 188       goto error6;
 189
 190
 191    ret = svga_emit_initial_state( svga );
 192    if (ret)
 193       goto error7;
 194
 195    /* Avoid shortcircuiting state with initial value of zero.
 196     */
 197    memset(&svga->state.hw_clear, 0xcd, sizeof(svga->state.hw_clear));
 198    memset(&svga->state.hw_clear.framebuffer, 0x0,
 199           sizeof(svga->state.hw_clear.framebuffer));
 200
 201    memset(&svga->state.hw_draw, 0xcd, sizeof(svga->state.hw_draw));
 202    memset(&svga->state.hw_draw.views, 0x0, sizeof(svga->state.hw_draw.views));
 203    svga->state.hw_draw.num_views = 0;
 204
 205    svga->dirty = ~0;
 206    svga->state.white_fs_id = SVGA3D_INVALID_ID;
 207
 208    LIST_INITHEAD(&svga->dirty_buffers);
 209
 210    return &svga->pipe;
 211
 212 error7:
 213    svga_hwtnl_destroy( svga->hwtnl );
 214 error6:
 215    u_upload_destroy( svga->upload_vb );
 216 error5:
 217    u_upload_destroy( svga->upload_ib );
 218 error4:
 219    svga_destroy_swtnl(svga);
 220 error3:
 221    svga->swc->destroy(svga->swc);
 222 error2:
 223    FREE(svga);
 224 error1:
 225    return NULL;
 226 }
 227
 228
 229 void svga_context_flush( struct svga_context *svga,
 230                          struct pipe_fence_handle **pfence )
 231 {
 232    struct svga_screen *svgascreen = svga_screen(svga->pipe.screen);
 233
 234    svga->curr.nr_fbs = 0;
 235
 236    /* Unmap upload manager buffers:
 237     */
 238    u_upload_flush(svga->upload_vb);
 239    u_upload_flush(svga->upload_ib);
 240
 241    /* Flush screen, to ensure that texture dma uploads are processed
 242     * before submitting commands.
 243     */
 244    svga_screen_flush(svgascreen, NULL);
 245
 246    svga_context_flush_buffers(svga);
 247
 248    /* Flush pending commands to hardware:
 249     */
 250    svga->swc->flush(svga->swc, pfence);
 251
 252    if (SVGA_DEBUG & DEBUG_SYNC) {
 253       if (pfence && *pfence)
 254          svga->pipe.screen->fence_finish( svga->pipe.screen, *pfence, 0);
 255    }
 256 }
 257
 258
 259 void svga_hwtnl_flush_retry( struct svga_context *svga )
 260 {
 261    enum pipe_error ret = PIPE_OK;
 262
 263    ret = svga_hwtnl_flush( svga->hwtnl );
 264    if (ret == PIPE_ERROR_OUT_OF_MEMORY) {
 265       svga_context_flush( svga, NULL );
 266       ret = svga_hwtnl_flush( svga->hwtnl );
 267    }
 268
 269    assert(ret == 0);
 270 }
 271