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