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 #include "sp_query.h"
  46
  47
  48
  49 /**
  50  * Query format support for creating a texture, drawing surface, etc.
  51  * \param format  the format to test
  52  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
  53  */
  54 static boolean
  55 softpipe_is_format_supported( struct pipe_context *pipe,
  56                               enum pipe_format format, uint type )
  57 {
  58    switch (type) {
  59    case PIPE_TEXTURE:
  60       /* softpipe supports all texture formats */
  61       return TRUE;
  62    case PIPE_SURFACE:
  63       /* softpipe supports all (off-screen) surface formats */
  64       return TRUE;
  65    default:
  66       assert(0);
  67       return FALSE;
  68    }
  69 }
  70
  71
  72 /**
  73  * Map any drawing surfaces which aren't already mapped
  74  */
  75 void
  76 softpipe_map_surfaces(struct softpipe_context *sp)
  77 {
  78    struct pipe_surface *ps;
  79    unsigned i;
  80
  81    for (i = 0; i < sp->framebuffer.num_cbufs; i++) {
  82       ps = sp->framebuffer.cbufs[i];
  83       if (ps->buffer)
  84          pipe_surface_map(ps);
  85    }
  86
  87    ps = sp->framebuffer.zbuf;
  88    if (ps && ps->buffer)
  89       pipe_surface_map(ps);
  90
  91    ps = sp->framebuffer.sbuf;
  92    if (ps && ps->buffer)
  93       pipe_surface_map(ps);
  94 }
  95
  96
  97 /**
  98  * Unmap any mapped drawing surfaces
  99  */
 100 void
 101 softpipe_unmap_surfaces(struct softpipe_context *sp)
 102 {
 103    struct pipe_surface *ps;
 104    uint i;
 105
 106    for (i = 0; i < sp->framebuffer.num_cbufs; i++)
 107       sp_flush_tile_cache(sp, sp->cbuf_cache[i]);
 108    sp_flush_tile_cache(sp, sp->zbuf_cache);
 109    sp_flush_tile_cache(sp, sp->sbuf_cache);
 110
 111    for (i = 0; i < sp->framebuffer.num_cbufs; i++) {
 112       ps = sp->framebuffer.cbufs[i];
 113       if (ps->map)
 114          pipe_surface_unmap(ps);
 115    }
 116
 117    ps = sp->framebuffer.zbuf;
 118    if (ps && ps->map)
 119       pipe_surface_unmap(ps);
 120
 121    ps = sp->framebuffer.sbuf;
 122    if (ps && ps->map)
 123       pipe_surface_unmap(ps);
 124 }
 125
 126
 127 static void softpipe_destroy( struct pipe_context *pipe )
 128 {
 129    struct softpipe_context *softpipe = softpipe_context( pipe );
 130
 131    draw_destroy( softpipe->draw );
 132
 133    softpipe->quad.polygon_stipple->destroy( softpipe->quad.polygon_stipple );
 134    softpipe->quad.earlyz->destroy( softpipe->quad.earlyz );
 135    softpipe->quad.shade->destroy( softpipe->quad.shade );
 136    softpipe->quad.alpha_test->destroy( softpipe->quad.alpha_test );
 137    softpipe->quad.depth_test->destroy( softpipe->quad.depth_test );
 138    softpipe->quad.stencil_test->destroy( softpipe->quad.stencil_test );
 139    softpipe->quad.occlusion->destroy( softpipe->quad.occlusion );
 140    softpipe->quad.coverage->destroy( softpipe->quad.coverage );
 141    softpipe->quad.bufloop->destroy( softpipe->quad.bufloop );
 142    softpipe->quad.blend->destroy( softpipe->quad.blend );
 143    softpipe->quad.colormask->destroy( softpipe->quad.colormask );
 144    softpipe->quad.output->destroy( softpipe->quad.output );
 145
 146    FREE( softpipe );
 147 }
 148
 149
 150 static const char *softpipe_get_name( struct pipe_context *pipe )
 151 {
 152    return "softpipe";
 153 }
 154
 155 static const char *softpipe_get_vendor( struct pipe_context *pipe )
 156 {
 157    return "Tungsten Graphics, Inc.";
 158 }
 159
 160 static int softpipe_get_param(struct pipe_context *pipe, int param)
 161 {
 162    switch (param) {
 163    case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
 164       return 8;
 165    case PIPE_CAP_NPOT_TEXTURES:
 166       return 1;
 167    case PIPE_CAP_TWO_SIDED_STENCIL:
 168       return 1;
 169    case PIPE_CAP_GLSL:
 170       return 1;
 171    case PIPE_CAP_S3TC:
 172       return 0;
 173    case PIPE_CAP_ANISOTROPIC_FILTER:
 174       return 0;
 175    case PIPE_CAP_POINT_SPRITE:
 176       return 1;
 177    case PIPE_CAP_MAX_RENDER_TARGETS:
 178       return 1;
 179    case PIPE_CAP_OCCLUSION_QUERY:
 180       return 1;
 181    case PIPE_CAP_TEXTURE_SHADOW_MAP:
 182       return 1;
 183    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
 184       return 12; /* max 2Kx2K */
 185    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
 186       return 8;  /* max 128x128x128 */
 187    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
 188       return 12; /* max 2Kx2K */
 189    default:
 190       return 0;
 191    }
 192 }
 193
 194 static float softpipe_get_paramf(struct pipe_context *pipe, int param)
 195 {
 196    switch (param) {
 197    case PIPE_CAP_MAX_LINE_WIDTH:
 198       /* fall-through */
 199    case PIPE_CAP_MAX_LINE_WIDTH_AA:
 200       return 255.0; /* arbitrary */
 201
 202    case PIPE_CAP_MAX_POINT_WIDTH:
 203       /* fall-through */
 204    case PIPE_CAP_MAX_POINT_WIDTH_AA:
 205       return 255.0; /* arbitrary */
 206
 207    case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 208       return 0.0;
 209
 210    case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 211       return 16.0; /* arbitrary */
 212
 213    default:
 214       return 0;
 215    }
 216 }
 217
 218 struct pipe_context *softpipe_create( struct pipe_winsys *pipe_winsys,
 219                                       struct softpipe_winsys *softpipe_winsys )
 220 {
 221    struct softpipe_context *softpipe = CALLOC_STRUCT(softpipe_context);
 222    uint i;
 223
 224 #if defined(__i386__) || defined(__386__)
 225    softpipe->use_sse = GETENV( "GALLIUM_NOSSE" ) == NULL;
 226 #else
 227    softpipe->use_sse = FALSE;
 228 #endif
 229
 230    softpipe->dump_fs = GETENV( "GALLIUM_DUMP_FS" ) != NULL;
 231
 232    softpipe->pipe.winsys = pipe_winsys;
 233    softpipe->pipe.destroy = softpipe_destroy;
 234
 235    /* queries */
 236    softpipe->pipe.is_format_supported = softpipe_is_format_supported;
 237    softpipe->pipe.get_name = softpipe_get_name;
 238    softpipe->pipe.get_vendor = softpipe_get_vendor;
 239    softpipe->pipe.get_param = softpipe_get_param;
 240    softpipe->pipe.get_paramf = softpipe_get_paramf;
 241
 242    /* state setters */
 243    softpipe->pipe.create_alpha_test_state = softpipe_create_alpha_test_state;
 244    softpipe->pipe.bind_alpha_test_state   = softpipe_bind_alpha_test_state;
 245    softpipe->pipe.delete_alpha_test_state = softpipe_delete_alpha_test_state;
 246
 247    softpipe->pipe.create_blend_state = softpipe_create_blend_state;
 248    softpipe->pipe.bind_blend_state   = softpipe_bind_blend_state;
 249    softpipe->pipe.delete_blend_state = softpipe_delete_blend_state;
 250
 251    softpipe->pipe.create_sampler_state = softpipe_create_sampler_state;
 252    softpipe->pipe.bind_sampler_state   = softpipe_bind_sampler_state;
 253    softpipe->pipe.delete_sampler_state = softpipe_delete_sampler_state;
 254
 255    softpipe->pipe.create_depth_stencil_state = softpipe_create_depth_stencil_state;
 256    softpipe->pipe.bind_depth_stencil_state   = softpipe_bind_depth_stencil_state;
 257    softpipe->pipe.delete_depth_stencil_state = softpipe_delete_depth_stencil_state;
 258
 259    softpipe->pipe.create_rasterizer_state = softpipe_create_rasterizer_state;
 260    softpipe->pipe.bind_rasterizer_state   = softpipe_bind_rasterizer_state;
 261    softpipe->pipe.delete_rasterizer_state = softpipe_delete_rasterizer_state;
 262
 263    softpipe->pipe.create_fs_state = softpipe_create_fs_state;
 264    softpipe->pipe.bind_fs_state   = softpipe_bind_fs_state;
 265    softpipe->pipe.delete_fs_state = softpipe_delete_fs_state;
 266
 267    softpipe->pipe.create_vs_state = softpipe_create_vs_state;
 268    softpipe->pipe.bind_vs_state   = softpipe_bind_vs_state;
 269    softpipe->pipe.delete_vs_state = softpipe_delete_vs_state;
 270
 271    softpipe->pipe.set_blend_color = softpipe_set_blend_color;
 272    softpipe->pipe.set_clip_state = softpipe_set_clip_state;
 273    softpipe->pipe.set_constant_buffer = softpipe_set_constant_buffer;
 274    softpipe->pipe.set_framebuffer_state = softpipe_set_framebuffer_state;
 275    softpipe->pipe.set_polygon_stipple = softpipe_set_polygon_stipple;
 276    softpipe->pipe.set_scissor_state = softpipe_set_scissor_state;
 277    softpipe->pipe.set_sampler_texture = softpipe_set_sampler_texture;
 278    softpipe->pipe.set_viewport_state = softpipe_set_viewport_state;
 279
 280    softpipe->pipe.set_vertex_buffer = softpipe_set_vertex_buffer;
 281    softpipe->pipe.set_vertex_element = softpipe_set_vertex_element;
 282
 283    softpipe->pipe.draw_arrays = softpipe_draw_arrays;
 284    softpipe->pipe.draw_elements = softpipe_draw_elements;
 285
 286    softpipe->pipe.clear = softpipe_clear;
 287    softpipe->pipe.flush = softpipe_flush;
 288
 289    softpipe_init_query_funcs( softpipe );
 290
 291    /* textures */
 292    softpipe->pipe.texture_create = softpipe_texture_create;
 293    softpipe->pipe.texture_release = softpipe_texture_release;
 294    softpipe->pipe.get_tex_surface = softpipe_get_tex_surface;
 295
 296    /*
 297     * Alloc caches for accessing drawing surfaces and textures.
 298     * Must be before quad stage setup!
 299     */
 300    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++)
 301       softpipe->cbuf_cache[i] = sp_create_tile_cache();
 302    softpipe->zbuf_cache = sp_create_tile_cache();
 303    softpipe->sbuf_cache_sep = sp_create_tile_cache();
 304    softpipe->sbuf_cache = softpipe->sbuf_cache_sep; /* initial value */
 305
 306    for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
 307       softpipe->tex_cache[i] = sp_create_tile_cache();
 308
 309
 310    /* setup quad rendering stages */
 311    softpipe->quad.polygon_stipple = sp_quad_polygon_stipple_stage(softpipe);
 312    softpipe->quad.earlyz = sp_quad_earlyz_stage(softpipe);
 313    softpipe->quad.shade = sp_quad_shade_stage(softpipe);
 314    softpipe->quad.alpha_test = sp_quad_alpha_test_stage(softpipe);
 315    softpipe->quad.depth_test = sp_quad_depth_test_stage(softpipe);
 316    softpipe->quad.stencil_test = sp_quad_stencil_test_stage(softpipe);
 317    softpipe->quad.occlusion = sp_quad_occlusion_stage(softpipe);
 318    softpipe->quad.coverage = sp_quad_coverage_stage(softpipe);
 319    softpipe->quad.bufloop = sp_quad_bufloop_stage(softpipe);
 320    softpipe->quad.blend = sp_quad_blend_stage(softpipe);
 321    softpipe->quad.colormask = sp_quad_colormask_stage(softpipe);
 322    softpipe->quad.output = sp_quad_output_stage(softpipe);
 323
 324    softpipe->winsys = softpipe_winsys;
 325
 326    /*
 327     * Create drawing context and plug our rendering stage into it.
 328     */
 329    softpipe->draw = draw_create();
 330    assert(softpipe->draw);
 331    softpipe->setup = sp_draw_render_stage(softpipe);
 332
 333    if (GETENV( "SP_VBUF" ) != NULL) {
 334       softpipe->vbuf = sp_draw_vbuf_stage(softpipe->draw,
 335                                           &softpipe->pipe,
 336                                           sp_vbuf_setup_draw);
 337
 338       draw_set_rasterize_stage(softpipe->draw, softpipe->vbuf);
 339    }
 340    else {
 341       draw_set_rasterize_stage(softpipe->draw, softpipe->setup);
 342    }
 343
 344    sp_init_surface_functions(softpipe);
 345
 346    return &softpipe->pipe;
 347 }