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 "pipe/p_defines.h"
  35 #include "util/u_math.h"
  36 #include "util/u_memory.h"
  37 #include "sp_clear.h"
  38 #include "sp_context.h"
  39 #include "sp_flush.h"
  40 #include "sp_prim_setup.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_texture.h"
  46 #include "sp_winsys.h"
  47 #include "sp_query.h"
  48
  49
  50
  51 /**
  52  * Map any drawing surfaces which aren't already mapped
  53  */
  54 void
  55 softpipe_map_transfers(struct softpipe_context *sp)
  56 {
  57    unsigned i;
  58
  59    for (i = 0; i < sp->framebuffer.nr_cbufs; i++) {
  60       sp_tile_cache_map_transfers(sp->cbuf_cache[i]);
  61    }
  62
  63    sp_tile_cache_map_transfers(sp->zsbuf_cache);
  64 }
  65
  66
  67 /**
  68  * Unmap any mapped drawing surfaces
  69  */
  70 void
  71 softpipe_unmap_transfers(struct softpipe_context *sp)
  72 {
  73    uint i;
  74
  75    for (i = 0; i < sp->framebuffer.nr_cbufs; i++) {
  76       sp_tile_cache_unmap_transfers(sp->cbuf_cache[i]);
  77    }
  78
  79    sp_tile_cache_unmap_transfers(sp->zsbuf_cache);
  80 }
  81
  82
  83 static void softpipe_destroy( struct pipe_context *pipe )
  84 {
  85    struct softpipe_context *softpipe = softpipe_context( pipe );
  86    uint i;
  87
  88    if (softpipe->draw)
  89       draw_destroy( softpipe->draw );
  90
  91       softpipe->quad.shade->destroy( softpipe->quad.shade );
  92       softpipe->quad.depth_test->destroy( softpipe->quad.depth_test );
  93       softpipe->quad.blend->destroy( softpipe->quad.blend );
  94
  95    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++)
  96       sp_destroy_tile_cache(softpipe->cbuf_cache[i]);
  97    sp_destroy_tile_cache(softpipe->zsbuf_cache);
  98
  99    for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
 100       sp_destroy_tile_cache(softpipe->tex_cache[i]);
 101
 102    for (i = 0; i < Elements(softpipe->constants); i++) {
 103       if (softpipe->constants[i].buffer) {
 104          pipe_buffer_reference(&softpipe->constants[i].buffer, NULL);
 105       }
 106    }
 107
 108    FREE( softpipe );
 109 }
 110
 111 static unsigned int
 112 softpipe_is_texture_referenced( struct pipe_context *pipe,
 113                                 struct pipe_texture *texture,
 114                                 unsigned face, unsigned level)
 115 {
 116    struct softpipe_context *softpipe = softpipe_context( pipe );
 117    unsigned i;
 118
 119    if(softpipe->dirty_render_cache) {
 120       for (i = 0; i < softpipe->framebuffer.nr_cbufs; i++) {
 121          if(softpipe->framebuffer.cbufs[i] &&
 122             softpipe->framebuffer.cbufs[i]->texture == texture)
 123             return PIPE_REFERENCED_FOR_WRITE;
 124       }
 125       if(softpipe->framebuffer.zsbuf &&
 126          softpipe->framebuffer.zsbuf->texture == texture)
 127          return PIPE_REFERENCED_FOR_WRITE;
 128    }
 129
 130    /* FIXME: we also need to do the same for the texture cache */
 131
 132    return PIPE_UNREFERENCED;
 133 }
 134
 135 static unsigned int
 136 softpipe_is_buffer_referenced( struct pipe_context *pipe,
 137                                struct pipe_buffer *buf)
 138 {
 139    return PIPE_UNREFERENCED;
 140 }
 141
 142 struct pipe_context *
 143 softpipe_create( struct pipe_screen *screen )
 144 {
 145    struct softpipe_context *softpipe = CALLOC_STRUCT(softpipe_context);
 146    uint i;
 147
 148    util_init_math();
 149
 150 #ifdef PIPE_ARCH_X86
 151    softpipe->use_sse = !debug_get_bool_option( "GALLIUM_NOSSE", FALSE );
 152 #else
 153    softpipe->use_sse = FALSE;
 154 #endif
 155
 156    softpipe->dump_fs = debug_get_bool_option( "GALLIUM_DUMP_FS", FALSE );
 157
 158    softpipe->pipe.winsys = screen->winsys;
 159    softpipe->pipe.screen = screen;
 160    softpipe->pipe.destroy = softpipe_destroy;
 161
 162    /* state setters */
 163    softpipe->pipe.create_blend_state = softpipe_create_blend_state;
 164    softpipe->pipe.bind_blend_state   = softpipe_bind_blend_state;
 165    softpipe->pipe.delete_blend_state = softpipe_delete_blend_state;
 166
 167    softpipe->pipe.create_sampler_state = softpipe_create_sampler_state;
 168    softpipe->pipe.bind_sampler_states  = softpipe_bind_sampler_states;
 169    softpipe->pipe.delete_sampler_state = softpipe_delete_sampler_state;
 170
 171    softpipe->pipe.create_depth_stencil_alpha_state = softpipe_create_depth_stencil_state;
 172    softpipe->pipe.bind_depth_stencil_alpha_state   = softpipe_bind_depth_stencil_state;
 173    softpipe->pipe.delete_depth_stencil_alpha_state = softpipe_delete_depth_stencil_state;
 174
 175    softpipe->pipe.create_rasterizer_state = softpipe_create_rasterizer_state;
 176    softpipe->pipe.bind_rasterizer_state   = softpipe_bind_rasterizer_state;
 177    softpipe->pipe.delete_rasterizer_state = softpipe_delete_rasterizer_state;
 178
 179    softpipe->pipe.create_fs_state = softpipe_create_fs_state;
 180    softpipe->pipe.bind_fs_state   = softpipe_bind_fs_state;
 181    softpipe->pipe.delete_fs_state = softpipe_delete_fs_state;
 182
 183    softpipe->pipe.create_vs_state = softpipe_create_vs_state;
 184    softpipe->pipe.bind_vs_state   = softpipe_bind_vs_state;
 185    softpipe->pipe.delete_vs_state = softpipe_delete_vs_state;
 186
 187    softpipe->pipe.set_blend_color = softpipe_set_blend_color;
 188    softpipe->pipe.set_clip_state = softpipe_set_clip_state;
 189    softpipe->pipe.set_constant_buffer = softpipe_set_constant_buffer;
 190    softpipe->pipe.set_framebuffer_state = softpipe_set_framebuffer_state;
 191    softpipe->pipe.set_polygon_stipple = softpipe_set_polygon_stipple;
 192    softpipe->pipe.set_scissor_state = softpipe_set_scissor_state;
 193    softpipe->pipe.set_sampler_textures = softpipe_set_sampler_textures;
 194    softpipe->pipe.set_viewport_state = softpipe_set_viewport_state;
 195
 196    softpipe->pipe.set_vertex_buffers = softpipe_set_vertex_buffers;
 197    softpipe->pipe.set_vertex_elements = softpipe_set_vertex_elements;
 198
 199    softpipe->pipe.draw_arrays = softpipe_draw_arrays;
 200    softpipe->pipe.draw_elements = softpipe_draw_elements;
 201    softpipe->pipe.draw_range_elements = softpipe_draw_range_elements;
 202    softpipe->pipe.set_edgeflags = softpipe_set_edgeflags;
 203
 204
 205    softpipe->pipe.clear = softpipe_clear;
 206    softpipe->pipe.flush = softpipe_flush;
 207
 208    softpipe->pipe.is_texture_referenced = softpipe_is_texture_referenced;
 209    softpipe->pipe.is_buffer_referenced = softpipe_is_buffer_referenced;
 210
 211    softpipe_init_query_funcs( softpipe );
 212    softpipe_init_texture_funcs( softpipe );
 213
 214    /*
 215     * Alloc caches for accessing drawing surfaces and textures.
 216     * Must be before quad stage setup!
 217     */
 218    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++)
 219       softpipe->cbuf_cache[i] = sp_create_tile_cache( screen );
 220    softpipe->zsbuf_cache = sp_create_tile_cache( screen );
 221
 222    for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
 223       softpipe->tex_cache[i] = sp_create_tile_cache( screen );
 224
 225
 226    /* setup quad rendering stages */
 227       softpipe->quad.shade = sp_quad_shade_stage(softpipe);
 228       softpipe->quad.depth_test = sp_quad_depth_test_stage(softpipe);
 229       softpipe->quad.blend = sp_quad_blend_stage(softpipe);
 230
 231
 232    /*
 233     * Create drawing context and plug our rendering stage into it.
 234     */
 235    softpipe->draw = draw_create();
 236    if (!softpipe->draw)
 237       goto fail;
 238
 239    draw_texture_samplers(softpipe->draw,
 240                          PIPE_MAX_SAMPLERS,
 241                          (struct tgsi_sampler **)
 242                             softpipe->tgsi.vert_samplers_list);
 243
 244    softpipe->setup = sp_draw_render_stage(softpipe);
 245    if (!softpipe->setup)
 246       goto fail;
 247
 248    if (debug_get_bool_option( "SP_NO_RAST", FALSE ))
 249       softpipe->no_rast = TRUE;
 250
 251    if (debug_get_bool_option( "SP_NO_VBUF", FALSE )) {
 252       /* Deprecated path -- vbuf is the intended interface to the draw module:
 253        */
 254       draw_set_rasterize_stage(softpipe->draw, softpipe->setup);
 255    }
 256    else {
 257       sp_init_vbuf(softpipe);
 258    }
 259
 260    /* plug in AA line/point stages */
 261    draw_install_aaline_stage(softpipe->draw, &softpipe->pipe);
 262    draw_install_aapoint_stage(softpipe->draw, &softpipe->pipe);
 263
 264 #if USE_DRAW_STAGE_PSTIPPLE
 265    /* Do polygon stipple w/ texture map + frag prog? */
 266    draw_install_pstipple_stage(softpipe->draw, &softpipe->pipe);
 267 #endif
 268
 269    sp_init_surface_functions(softpipe);
 270
 271    return &softpipe->pipe;
 272
 273  fail:
 274    softpipe_destroy(&softpipe->pipe);
 275    return NULL;
 276 }
 277