src/gallium/drivers/softpipe/sp_context.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  * Copyright 2008 VMware, Inc.  All rights reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the
   9  * "Software"), to deal in the Software without restriction, including
  10  * without limitation the rights to use, copy, modify, merge, publish,
  11  * distribute, sub license, and/or sell copies of the Software, and to
  12  * permit persons to whom the Software is furnished to do so, subject to
  13  * the following conditions:
  14  *
  15  * The above copyright notice and this permission notice (including the
  16  * next paragraph) shall be included in all copies or substantial portions
  17  * of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  20  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  21  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  22  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  23  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  24  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  25  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  26  *
  27  **************************************************************************/
  28
  29 /* Author:
  30  *    Keith Whitwell <keith@tungstengraphics.com>
  31  */
  32
  33 #include "draw/draw_context.h"
  34 #include "draw/draw_vbuf.h"
  35 #include "pipe/p_defines.h"
  36 #include "util/u_math.h"
  37 #include "util/u_memory.h"
  38 #include "sp_clear.h"
  39 #include "sp_context.h"
  40 #include "sp_flush.h"
  41 #include "sp_prim_vbuf.h"
  42 #include "sp_state.h"
  43 #include "sp_surface.h"
  44 #include "sp_tile_cache.h"
  45 #include "sp_tex_tile_cache.h"
  46 #include "sp_texture.h"
  47 #include "sp_winsys.h"
  48 #include "sp_query.h"
  49
  50
  51
  52 /**
  53  * Map any drawing surfaces which aren't already mapped
  54  */
  55 void
  56 softpipe_map_transfers(struct softpipe_context *sp)
  57 {
  58    unsigned i;
  59
  60    for (i = 0; i < sp->framebuffer.nr_cbufs; i++) {
  61       sp_tile_cache_map_transfers(sp->cbuf_cache[i]);
  62    }
  63
  64    sp_tile_cache_map_transfers(sp->zsbuf_cache);
  65 }
  66
  67
  68 /**
  69  * Unmap any mapped drawing surfaces
  70  */
  71 void
  72 softpipe_unmap_transfers(struct softpipe_context *sp)
  73 {
  74    uint i;
  75
  76    for (i = 0; i < sp->framebuffer.nr_cbufs; i++) {
  77       sp_tile_cache_unmap_transfers(sp->cbuf_cache[i]);
  78    }
  79
  80    sp_tile_cache_unmap_transfers(sp->zsbuf_cache);
  81 }
  82
  83
  84 static void
  85 softpipe_destroy( struct pipe_context *pipe )
  86 {
  87    struct softpipe_context *softpipe = softpipe_context( pipe );
  88    uint i;
  89
  90    if (softpipe->draw)
  91       draw_destroy( softpipe->draw );
  92
  93       softpipe->quad.shade->destroy( softpipe->quad.shade );
  94       softpipe->quad.depth_test->destroy( softpipe->quad.depth_test );
  95       softpipe->quad.blend->destroy( softpipe->quad.blend );
  96
  97    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
  98       sp_destroy_tile_cache(softpipe->cbuf_cache[i]);
  99       pipe_surface_reference(&softpipe->framebuffer.cbufs[i], NULL);
 100    }
 101    sp_destroy_tile_cache(softpipe->zsbuf_cache);
 102    pipe_surface_reference(&softpipe->framebuffer.zsbuf, NULL);
 103
 104    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 105       sp_destroy_tex_tile_cache(softpipe->tex_cache[i]);
 106       pipe_texture_reference(&softpipe->texture[i], NULL);
 107    }
 108
 109    for (i = 0; i < Elements(softpipe->constants); i++) {
 110       if (softpipe->constants[i].buffer) {
 111          pipe_buffer_reference(&softpipe->constants[i].buffer, NULL);
 112       }
 113    }
 114
 115    FREE( softpipe );
 116 }
 117
 118
 119 /**
 120  * if (the texture is being used as a framebuffer surface)
 121  *    return PIPE_REFERENCED_FOR_WRITE
 122  * else if (the texture is a bound texture source)
 123  *    return PIPE_REFERENCED_FOR_READ  XXX not done yet
 124  * else
 125  *    return PIPE_UNREFERENCED
 126  */
 127 static unsigned int
 128 softpipe_is_texture_referenced( struct pipe_context *pipe,
 129                                 struct pipe_texture *texture,
 130                                 unsigned face, unsigned level)
 131 {
 132    struct softpipe_context *softpipe = softpipe_context( pipe );
 133    unsigned i;
 134
 135    if (softpipe->dirty_render_cache) {
 136       for (i = 0; i < softpipe->framebuffer.nr_cbufs; i++) {
 137          if (softpipe->framebuffer.cbufs[i] &&
 138              softpipe->framebuffer.cbufs[i]->texture == texture) {
 139             return PIPE_REFERENCED_FOR_WRITE;
 140          }
 141       }
 142       if (softpipe->framebuffer.zsbuf &&
 143           softpipe->framebuffer.zsbuf->texture == texture) {
 144          return PIPE_REFERENCED_FOR_WRITE;
 145       }
 146    }
 147
 148    /* FIXME: we also need to do the same for the texture cache */
 149
 150    return PIPE_UNREFERENCED;
 151 }
 152
 153
 154 static unsigned int
 155 softpipe_is_buffer_referenced( struct pipe_context *pipe,
 156                                struct pipe_buffer *buf)
 157 {
 158    return PIPE_UNREFERENCED;
 159 }
 160
 161
 162 struct pipe_context *
 163 softpipe_create( struct pipe_screen *screen )
 164 {
 165    struct softpipe_context *softpipe = CALLOC_STRUCT(softpipe_context);
 166    uint i;
 167
 168    util_init_math();
 169
 170 #ifdef PIPE_ARCH_X86
 171    softpipe->use_sse = !debug_get_bool_option( "GALLIUM_NOSSE", FALSE );
 172 #else
 173    softpipe->use_sse = FALSE;
 174 #endif
 175
 176    softpipe->dump_fs = debug_get_bool_option( "GALLIUM_DUMP_FS", FALSE );
 177
 178    softpipe->pipe.winsys = screen->winsys;
 179    softpipe->pipe.screen = screen;
 180    softpipe->pipe.destroy = softpipe_destroy;
 181
 182    /* state setters */
 183    softpipe->pipe.create_blend_state = softpipe_create_blend_state;
 184    softpipe->pipe.bind_blend_state   = softpipe_bind_blend_state;
 185    softpipe->pipe.delete_blend_state = softpipe_delete_blend_state;
 186
 187    softpipe->pipe.create_sampler_state = softpipe_create_sampler_state;
 188    softpipe->pipe.bind_sampler_states  = softpipe_bind_sampler_states;
 189    softpipe->pipe.delete_sampler_state = softpipe_delete_sampler_state;
 190
 191    softpipe->pipe.create_depth_stencil_alpha_state = softpipe_create_depth_stencil_state;
 192    softpipe->pipe.bind_depth_stencil_alpha_state   = softpipe_bind_depth_stencil_state;
 193    softpipe->pipe.delete_depth_stencil_alpha_state = softpipe_delete_depth_stencil_state;
 194
 195    softpipe->pipe.create_rasterizer_state = softpipe_create_rasterizer_state;
 196    softpipe->pipe.bind_rasterizer_state   = softpipe_bind_rasterizer_state;
 197    softpipe->pipe.delete_rasterizer_state = softpipe_delete_rasterizer_state;
 198
 199    softpipe->pipe.create_fs_state = softpipe_create_fs_state;
 200    softpipe->pipe.bind_fs_state   = softpipe_bind_fs_state;
 201    softpipe->pipe.delete_fs_state = softpipe_delete_fs_state;
 202
 203    softpipe->pipe.create_vs_state = softpipe_create_vs_state;
 204    softpipe->pipe.bind_vs_state   = softpipe_bind_vs_state;
 205    softpipe->pipe.delete_vs_state = softpipe_delete_vs_state;
 206
 207    softpipe->pipe.set_blend_color = softpipe_set_blend_color;
 208    softpipe->pipe.set_clip_state = softpipe_set_clip_state;
 209    softpipe->pipe.set_constant_buffer = softpipe_set_constant_buffer;
 210    softpipe->pipe.set_framebuffer_state = softpipe_set_framebuffer_state;
 211    softpipe->pipe.set_polygon_stipple = softpipe_set_polygon_stipple;
 212    softpipe->pipe.set_scissor_state = softpipe_set_scissor_state;
 213    softpipe->pipe.set_sampler_textures = softpipe_set_sampler_textures;
 214    softpipe->pipe.set_viewport_state = softpipe_set_viewport_state;
 215
 216    softpipe->pipe.set_vertex_buffers = softpipe_set_vertex_buffers;
 217    softpipe->pipe.set_vertex_elements = softpipe_set_vertex_elements;
 218
 219    softpipe->pipe.draw_arrays = softpipe_draw_arrays;
 220    softpipe->pipe.draw_elements = softpipe_draw_elements;
 221    softpipe->pipe.draw_range_elements = softpipe_draw_range_elements;
 222    softpipe->pipe.set_edgeflags = softpipe_set_edgeflags;
 223
 224
 225    softpipe->pipe.clear = softpipe_clear;
 226    softpipe->pipe.flush = softpipe_flush;
 227
 228    softpipe->pipe.is_texture_referenced = softpipe_is_texture_referenced;
 229    softpipe->pipe.is_buffer_referenced = softpipe_is_buffer_referenced;
 230
 231    softpipe_init_query_funcs( softpipe );
 232
 233    /*
 234     * Alloc caches for accessing drawing surfaces and textures.
 235     * Must be before quad stage setup!
 236     */
 237    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++)
 238       softpipe->cbuf_cache[i] = sp_create_tile_cache( screen );
 239    softpipe->zsbuf_cache = sp_create_tile_cache( screen );
 240
 241    for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
 242       softpipe->tex_cache[i] = sp_create_tex_tile_cache( screen );
 243
 244
 245    /* setup quad rendering stages */
 246       softpipe->quad.shade = sp_quad_shade_stage(softpipe);
 247       softpipe->quad.depth_test = sp_quad_depth_test_stage(softpipe);
 248       softpipe->quad.blend = sp_quad_blend_stage(softpipe);
 249
 250
 251    /*
 252     * Create drawing context and plug our rendering stage into it.
 253     */
 254    softpipe->draw = draw_create();
 255    if (!softpipe->draw)
 256       goto fail;
 257
 258    draw_texture_samplers(softpipe->draw,
 259                          PIPE_MAX_SAMPLERS,
 260                          (struct tgsi_sampler **)
 261                             softpipe->tgsi.vert_samplers_list);
 262
 263    if (debug_get_bool_option( "SP_NO_RAST", FALSE ))
 264       softpipe->no_rast = TRUE;
 265
 266    softpipe->vbuf_backend = sp_create_vbuf_backend(softpipe);
 267    if (!softpipe->vbuf_backend)
 268       goto fail;
 269
 270    softpipe->vbuf = draw_vbuf_stage(softpipe->draw, softpipe->vbuf_backend);
 271    if (!softpipe->vbuf)
 272       goto fail;
 273
 274    draw_set_rasterize_stage(softpipe->draw, softpipe->vbuf);
 275    draw_set_render(softpipe->draw, softpipe->vbuf_backend);
 276
 277
 278
 279    /* plug in AA line/point stages */
 280    draw_install_aaline_stage(softpipe->draw, &softpipe->pipe);
 281    draw_install_aapoint_stage(softpipe->draw, &softpipe->pipe);
 282
 283    /* Do polygon stipple w/ texture map + frag prog? */
 284    draw_install_pstipple_stage(softpipe->draw, &softpipe->pipe);
 285
 286    sp_init_surface_functions(softpipe);
 287
 288    return &softpipe->pipe;
 289
 290  fail:
 291    softpipe_destroy(&softpipe->pipe);
 292    return NULL;
 293 }
 294