src/mesa/pipe/softpipe/sp_context.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 /* Author:
  29  *    Keith Whitwell <keith@tungstengraphics.com>
  30  */
  31
  32 #include "pipe/draw/draw_context.h"
  33 #include "pipe/p_defines.h"
  34 #include "pipe/p_util.h"
  35 #include "sp_clear.h"
  36 #include "sp_context.h"
  37 #include "sp_flush.h"
  38 #include "sp_prim_setup.h"
  39 #include "sp_region.h"
  40 #include "sp_state.h"
  41 #include "sp_surface.h"
  42 #include "sp_tile_cache.h"
  43 #include "sp_texture.h"
  44 #include "sp_winsys.h"
  45
  46
  47
  48 /**
  49  * Query format support.
  50  * If we find texture and drawable support differs, add a selector
  51  * parameter or another function.
  52  */
  53 static boolean
  54 softpipe_is_format_supported( struct pipe_context *pipe, uint format )
  55 {
  56    struct softpipe_context *softpipe = softpipe_context( pipe );
  57    /* ask winsys if the format is supported */
  58    return softpipe->winsys->is_format_supported( softpipe->winsys, format );
  59 }
  60
  61
  62 /**
  63  * Map any drawing surfaces which aren't already mapped
  64  */
  65 void
  66 softpipe_map_surfaces(struct softpipe_context *sp)
  67 {
  68    struct pipe_context *pipe = &sp->pipe;
  69    unsigned i;
  70
  71    for (i = 0; i < sp->framebuffer.num_cbufs; i++) {
  72       struct pipe_surface *ps = sp->framebuffer.cbufs[i];
  73       if (ps->region && !ps->region->map) {
  74          pipe->region_map(pipe, ps->region);
  75       }
  76    }
  77
  78    if (sp->framebuffer.zbuf) {
  79       struct pipe_surface *ps = sp->framebuffer.zbuf;
  80       if (ps->region && !ps->region->map) {
  81          pipe->region_map(pipe, ps->region);
  82       }
  83    }
  84
  85    if (sp->framebuffer.sbuf) {
  86       struct pipe_surface *ps = sp->framebuffer.sbuf;
  87       if (ps->region && !ps->region->map) {
  88          pipe->region_map(pipe, ps->region);
  89       }
  90    }
  91 }
  92
  93
  94 void
  95 softpipe_map_texture_surfaces(struct softpipe_context *sp)
  96 {
  97    struct pipe_context *pipe = &sp->pipe;
  98    uint i;
  99
 100    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 101       struct softpipe_texture *spt = sp->texture[i];
 102       if (spt) {
 103          pipe->region_map(pipe, spt->region);
 104       }
 105    }
 106 }
 107
 108
 109 /**
 110  * Unmap any mapped drawing surfaces
 111  */
 112 void
 113 softpipe_unmap_surfaces(struct softpipe_context *sp)
 114 {
 115    struct pipe_context *pipe = &sp->pipe;
 116    uint i;
 117
 118    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++)
 119       sp_flush_tile_cache(sp, sp->cbuf_cache[i]);
 120    sp_flush_tile_cache(sp, sp->zbuf_cache);
 121    sp_flush_tile_cache(sp, sp->sbuf_cache);
 122
 123    for (i = 0; i < sp->framebuffer.num_cbufs; i++) {
 124       struct pipe_surface *ps = sp->framebuffer.cbufs[i];
 125       if (ps->region)
 126          pipe->region_unmap(pipe, ps->region);
 127    }
 128
 129    if (sp->framebuffer.zbuf) {
 130       struct pipe_surface *ps = sp->framebuffer.zbuf;
 131       if (ps->region)
 132          pipe->region_unmap(pipe, ps->region);
 133    }
 134
 135    if (sp->framebuffer.sbuf && sp->framebuffer.sbuf != sp->framebuffer.zbuf) {
 136       struct pipe_surface *ps = sp->framebuffer.sbuf;
 137       if (ps->region)
 138          pipe->region_unmap(pipe, ps->region);
 139    }
 140 }
 141
 142
 143 void
 144 softpipe_unmap_texture_surfaces(struct softpipe_context *sp)
 145 {
 146    struct pipe_context *pipe = &sp->pipe;
 147    uint i;
 148    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 149       struct softpipe_texture *spt = sp->texture[i];
 150       if (spt) {
 151          pipe->region_unmap(pipe, spt->region);
 152       }
 153    }
 154 }
 155
 156
 157 static void softpipe_destroy( struct pipe_context *pipe )
 158 {
 159    struct softpipe_context *softpipe = softpipe_context( pipe );
 160
 161    draw_destroy( softpipe->draw );
 162
 163    softpipe->quad.polygon_stipple->destroy( softpipe->quad.polygon_stipple );
 164    softpipe->quad.earlyz->destroy( softpipe->quad.earlyz );
 165    softpipe->quad.shade->destroy( softpipe->quad.shade );
 166    softpipe->quad.alpha_test->destroy( softpipe->quad.alpha_test );
 167    softpipe->quad.depth_test->destroy( softpipe->quad.depth_test );
 168    softpipe->quad.stencil_test->destroy( softpipe->quad.stencil_test );
 169    softpipe->quad.occlusion->destroy( softpipe->quad.occlusion );
 170    softpipe->quad.coverage->destroy( softpipe->quad.coverage );
 171    softpipe->quad.bufloop->destroy( softpipe->quad.bufloop );
 172    softpipe->quad.blend->destroy( softpipe->quad.blend );
 173    softpipe->quad.colormask->destroy( softpipe->quad.colormask );
 174    softpipe->quad.output->destroy( softpipe->quad.output );
 175
 176    FREE( softpipe );
 177 }
 178
 179
 180 static void
 181 softpipe_begin_query(struct pipe_context *pipe, struct pipe_query_object *q)
 182 {
 183    struct softpipe_context *softpipe = softpipe_context( pipe );
 184    assert(q->type < PIPE_QUERY_TYPES);
 185    assert(!softpipe->queries[q->type]);
 186    softpipe->queries[q->type] = q;
 187 }
 188
 189
 190 static void
 191 softpipe_end_query(struct pipe_context *pipe, struct pipe_query_object *q)
 192 {
 193    struct softpipe_context *softpipe = softpipe_context( pipe );
 194    assert(q->type < PIPE_QUERY_TYPES);
 195    assert(softpipe->queries[q->type]);
 196    q->ready = 1;  /* software rendering is synchronous */
 197    softpipe->queries[q->type] = NULL;
 198 }
 199
 200
 201 static void
 202 softpipe_wait_query(struct pipe_context *pipe, struct pipe_query_object *q)
 203 {
 204    /* Should never get here since we indicated that the result was
 205     * ready in softpipe_end_query().
 206     */
 207    assert(0);
 208 }
 209
 210
 211 static const char *softpipe_get_name( struct pipe_context *pipe )
 212 {
 213    return "softpipe";
 214 }
 215
 216 static const char *softpipe_get_vendor( struct pipe_context *pipe )
 217 {
 218    return "Tungsten Graphics, Inc.";
 219 }
 220
 221 static int softpipe_get_param(struct pipe_context *pipe, int param)
 222 {
 223    switch (param) {
 224    case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
 225       return 8;
 226    case PIPE_CAP_NPOT_TEXTURES:
 227       return 1;
 228    case PIPE_CAP_TWO_SIDED_STENCIL:
 229       return 1;
 230    case PIPE_CAP_GLSL:
 231       return 1;
 232    case PIPE_CAP_S3TC:
 233       return 0;
 234    case PIPE_CAP_ANISOTROPIC_FILTER:
 235       return 0;
 236    case PIPE_CAP_POINT_SPRITE:
 237       return 1;
 238    case PIPE_CAP_MAX_RENDER_TARGETS:
 239       return 1;
 240    case PIPE_CAP_OCCLUSION_QUERY:
 241       return 1;
 242    case PIPE_CAP_TEXTURE_SHADOW_MAP:
 243       return 1;
 244    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 245       return 12; /* max 2Kx2K */
 246    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 247       return 8;  /* max 128x128x128 */
 248    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 249       return 12; /* max 2Kx2K */
 250    default:
 251       return 0;
 252    }
 253 }
 254
 255 static float softpipe_get_paramf(struct pipe_context *pipe, int param)
 256 {
 257    switch (param) {
 258    case PIPE_CAP_MAX_LINE_WIDTH:
 259       /* fall-through */
 260    case PIPE_CAP_MAX_LINE_WIDTH_AA:
 261       return 255.0; /* arbitrary */
 262
 263    case PIPE_CAP_MAX_POINT_WIDTH:
 264       /* fall-through */
 265    case PIPE_CAP_MAX_POINT_WIDTH_AA:
 266       return 255.0; /* arbitrary */
 267
 268    case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 269       return 0.0;
 270
 271    case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 272       return 16.0; /* arbitrary */
 273
 274    default:
 275       return 0;
 276    }
 277 }
 278
 279 struct pipe_context *softpipe_create( struct pipe_winsys *pipe_winsys,
 280                                       struct softpipe_winsys *softpipe_winsys )
 281 {
 282    struct softpipe_context *softpipe = CALLOC_STRUCT(softpipe_context);
 283    uint i;
 284
 285 #if defined(__i386__) || defined(__386__)
 286    softpipe->use_sse = GETENV( "GALLIUM_SSE" ) != NULL;
 287 #else
 288    softpipe->use_sse = FALSE;
 289 #endif
 290
 291    softpipe->dump_fs = GETENV( "GALLIUM_DUMP_FS" ) != NULL;
 292
 293    softpipe->pipe.winsys = pipe_winsys;
 294    softpipe->pipe.destroy = softpipe_destroy;
 295
 296    /* queries */
 297    softpipe->pipe.is_format_supported = softpipe_is_format_supported;
 298    softpipe->pipe.get_param = softpipe_get_param;
 299    softpipe->pipe.get_paramf = softpipe_get_paramf;
 300
 301    /* state setters */
 302    softpipe->pipe.create_alpha_test_state = softpipe_create_alpha_test_state;
 303    softpipe->pipe.bind_alpha_test_state   = softpipe_bind_alpha_test_state;
 304    softpipe->pipe.delete_alpha_test_state = softpipe_delete_alpha_test_state;
 305    softpipe->pipe.create_blend_state = softpipe_create_blend_state;
 306    softpipe->pipe.bind_blend_state   = softpipe_bind_blend_state;
 307    softpipe->pipe.delete_blend_state = softpipe_delete_blend_state;
 308    softpipe->pipe.create_sampler_state = softpipe_create_sampler_state;
 309    softpipe->pipe.bind_sampler_state   = softpipe_bind_sampler_state;
 310    softpipe->pipe.delete_sampler_state = softpipe_delete_sampler_state;
 311    softpipe->pipe.create_depth_stencil_state = softpipe_create_depth_stencil_state;
 312    softpipe->pipe.bind_depth_stencil_state   = softpipe_bind_depth_stencil_state;
 313    softpipe->pipe.delete_depth_stencil_state = softpipe_delete_depth_stencil_state;
 314    softpipe->pipe.create_rasterizer_state = softpipe_create_rasterizer_state;
 315    softpipe->pipe.bind_rasterizer_state   = softpipe_bind_rasterizer_state;
 316    softpipe->pipe.delete_rasterizer_state = softpipe_delete_rasterizer_state;
 317    softpipe->pipe.create_fs_state = softpipe_create_fs_state;
 318    softpipe->pipe.bind_fs_state   = softpipe_bind_fs_state;
 319    softpipe->pipe.delete_fs_state = softpipe_delete_fs_state;
 320    softpipe->pipe.create_vs_state = softpipe_create_vs_state;
 321    softpipe->pipe.bind_vs_state   = softpipe_bind_vs_state;
 322    softpipe->pipe.delete_vs_state = softpipe_delete_vs_state;
 323
 324    softpipe->pipe.set_blend_color = softpipe_set_blend_color;
 325    softpipe->pipe.set_clip_state = softpipe_set_clip_state;
 326    softpipe->pipe.set_clear_color_state = softpipe_set_clear_color_state;
 327    softpipe->pipe.set_constant_buffer = softpipe_set_constant_buffer;
 328    softpipe->pipe.set_feedback_state = softpipe_set_feedback_state;
 329    softpipe->pipe.set_framebuffer_state = softpipe_set_framebuffer_state;
 330    softpipe->pipe.set_polygon_stipple = softpipe_set_polygon_stipple;
 331    softpipe->pipe.set_sampler_units = softpipe_set_sampler_units;
 332    softpipe->pipe.set_scissor_state = softpipe_set_scissor_state;
 333    softpipe->pipe.set_texture_state = softpipe_set_texture_state;
 334    softpipe->pipe.set_viewport_state = softpipe_set_viewport_state;
 335
 336    softpipe->pipe.set_vertex_buffer = softpipe_set_vertex_buffer;
 337    softpipe->pipe.set_vertex_element = softpipe_set_vertex_element;
 338    softpipe->pipe.set_feedback_buffer = softpipe_set_feedback_buffer;
 339
 340    softpipe->pipe.draw_arrays = softpipe_draw_arrays;
 341    softpipe->pipe.draw_elements = softpipe_draw_elements;
 342
 343    softpipe->pipe.clear = softpipe_clear;
 344    softpipe->pipe.flush = softpipe_flush;
 345
 346    softpipe->pipe.begin_query = softpipe_begin_query;
 347    softpipe->pipe.end_query = softpipe_end_query;
 348    softpipe->pipe.wait_query = softpipe_wait_query;
 349
 350    softpipe->pipe.get_name = softpipe_get_name;
 351    softpipe->pipe.get_vendor = softpipe_get_vendor;
 352
 353    /* textures */
 354    softpipe->pipe.texture_create = softpipe_texture_create;
 355    softpipe->pipe.texture_release = softpipe_texture_release;
 356    softpipe->pipe.get_tex_surface = softpipe_get_tex_surface;
 357
 358    /*
 359     * Alloc caches for accessing drawing surfaces and textures.
 360     * Must be before quad stage setup!
 361     */
 362    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++)
 363       softpipe->cbuf_cache[i] = sp_create_tile_cache();
 364    softpipe->zbuf_cache = sp_create_tile_cache();
 365    softpipe->sbuf_cache_sep = sp_create_tile_cache();
 366    softpipe->sbuf_cache = softpipe->sbuf_cache_sep; /* initial value */
 367
 368    for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
 369       softpipe->tex_cache[i] = sp_create_tile_cache();
 370
 371
 372    /* setup quad rendering stages */
 373    softpipe->quad.polygon_stipple = sp_quad_polygon_stipple_stage(softpipe);
 374    softpipe->quad.earlyz = sp_quad_earlyz_stage(softpipe);
 375    softpipe->quad.shade = sp_quad_shade_stage(softpipe);
 376    softpipe->quad.alpha_test = sp_quad_alpha_test_stage(softpipe);
 377    softpipe->quad.depth_test = sp_quad_depth_test_stage(softpipe);
 378    softpipe->quad.stencil_test = sp_quad_stencil_test_stage(softpipe);
 379    softpipe->quad.occlusion = sp_quad_occlusion_stage(softpipe);
 380    softpipe->quad.coverage = sp_quad_coverage_stage(softpipe);
 381    softpipe->quad.bufloop = sp_quad_bufloop_stage(softpipe);
 382    softpipe->quad.blend = sp_quad_blend_stage(softpipe);
 383    softpipe->quad.colormask = sp_quad_colormask_stage(softpipe);
 384    softpipe->quad.output = sp_quad_output_stage(softpipe);
 385
 386    softpipe->winsys = softpipe_winsys;
 387
 388    /*
 389     * Create drawing context and plug our rendering stage into it.
 390     */
 391    softpipe->draw = draw_create();
 392    assert(softpipe->draw);
 393    softpipe->setup = sp_draw_render_stage(softpipe);
 394
 395    if (GETENV( "SP_VBUF" ) != NULL) {
 396       softpipe->vbuf = sp_draw_vbuf_stage(softpipe->draw,
 397                                           &softpipe->pipe,
 398                                           sp_vbuf_setup_draw);
 399
 400       draw_set_rasterize_stage(softpipe->draw, softpipe->vbuf);
 401    }
 402    else {
 403       draw_set_rasterize_stage(softpipe->draw, softpipe->setup);
 404    }
 405
 406
 407    sp_init_region_functions(softpipe);
 408    sp_init_surface_functions(softpipe);
 409
 410    return &softpipe->pipe;
 411 }