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