src/mesa/state_tracker/st_context.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 VMware, Inc.
   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 VMWARE 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 #include "main/imports.h"
  29 #include "main/accum.h"
  30 #include "main/api_exec.h"
  31 #include "main/context.h"
  32 #include "main/samplerobj.h"
  33 #include "main/shaderobj.h"
  34 #include "main/version.h"
  35 #include "main/vtxfmt.h"
  36 #include "main/hash.h"
  37 #include "program/prog_cache.h"
  38 #include "vbo/vbo.h"
  39 #include "glapi/glapi.h"
  40 #include "st_context.h"
  41 #include "st_debug.h"
  42 #include "st_cb_bitmap.h"
  43 #include "st_cb_blit.h"
  44 #include "st_cb_bufferobjects.h"
  45 #include "st_cb_clear.h"
  46 #include "st_cb_condrender.h"
  47 #include "st_cb_copyimage.h"
  48 #include "st_cb_drawpixels.h"
  49 #include "st_cb_rasterpos.h"
  50 #include "st_cb_drawtex.h"
  51 #include "st_cb_eglimage.h"
  52 #include "st_cb_fbo.h"
  53 #include "st_cb_feedback.h"
  54 #include "st_cb_msaa.h"
  55 #include "st_cb_perfmon.h"
  56 #include "st_cb_program.h"
  57 #include "st_cb_queryobj.h"
  58 #include "st_cb_readpixels.h"
  59 #include "st_cb_texture.h"
  60 #include "st_cb_xformfb.h"
  61 #include "st_cb_flush.h"
  62 #include "st_cb_syncobj.h"
  63 #include "st_cb_strings.h"
  64 #include "st_cb_texturebarrier.h"
  65 #include "st_cb_viewport.h"
  66 #include "st_atom.h"
  67 #include "st_draw.h"
  68 #include "st_extensions.h"
  69 #include "st_gen_mipmap.h"
  70 #include "st_program.h"
  71 #include "st_vdpau.h"
  72 #include "st_texture.h"
  73 #include "pipe/p_context.h"
  74 #include "util/u_inlines.h"
  75 #include "util/u_upload_mgr.h"
  76 #include "cso_cache/cso_context.h"
  77
  78
  79 DEBUG_GET_ONCE_BOOL_OPTION(mesa_mvp_dp4, "MESA_MVP_DP4", FALSE)
  80
  81
  82 /**
  83  * Called via ctx->Driver.Enable()
  84  */
  85 static void st_Enable(struct gl_context * ctx, GLenum cap, GLboolean state)
  86 {
  87    struct st_context *st = st_context(ctx);
  88
  89    switch (cap) {
  90    case GL_DEBUG_OUTPUT:
  91       st_enable_debug_output(st, state);
  92       break;
  93    default:
  94       break;
  95    }
  96 }
  97
  98
  99 /**
 100  * Called via ctx->Driver.UpdateState()
 101  */
 102 void st_invalidate_state(struct gl_context * ctx, GLbitfield new_state)
 103 {
 104    struct st_context *st = st_context(ctx);
 105
 106    /* Replace _NEW_FRAG_CLAMP with ST_NEW_FRAGMENT_PROGRAM for the fallback. */
 107    if (st->clamp_frag_color_in_shader && (new_state & _NEW_FRAG_CLAMP)) {
 108       new_state &= ~_NEW_FRAG_CLAMP;
 109       st->dirty.st |= ST_NEW_FRAGMENT_PROGRAM;
 110    }
 111
 112    /* Update the vertex shader if ctx->Light._ClampVertexColor was changed. */
 113    if (st->clamp_vert_color_in_shader && (new_state & _NEW_LIGHT)) {
 114       st->dirty.st |= ST_NEW_VERTEX_PROGRAM;
 115    }
 116
 117    st->dirty.mesa |= new_state;
 118    st->dirty.st |= ST_NEW_MESA;
 119
 120    /* This is the only core Mesa module we depend upon.
 121     * No longer use swrast, swsetup, tnl.
 122     */
 123    _vbo_InvalidateState(ctx, new_state);
 124 }
 125
 126
 127 static void
 128 st_destroy_context_priv(struct st_context *st)
 129 {
 130    uint shader, i;
 131
 132    st_destroy_atoms( st );
 133    st_destroy_draw( st );
 134    st_destroy_clear(st);
 135    st_destroy_bitmap(st);
 136    st_destroy_drawpix(st);
 137    st_destroy_drawtex(st);
 138    st_destroy_perfmon(st);
 139
 140    for (shader = 0; shader < ARRAY_SIZE(st->state.sampler_views); shader++) {
 141       for (i = 0; i < ARRAY_SIZE(st->state.sampler_views[0]); i++) {
 142          pipe_sampler_view_release(st->pipe,
 143                                    &st->state.sampler_views[shader][i]);
 144       }
 145    }
 146
 147    if (st->default_texture) {
 148       st->ctx->Driver.DeleteTexture(st->ctx, st->default_texture);
 149       st->default_texture = NULL;
 150    }
 151
 152    u_upload_destroy(st->uploader);
 153    if (st->indexbuf_uploader) {
 154       u_upload_destroy(st->indexbuf_uploader);
 155    }
 156    if (st->constbuf_uploader) {
 157       u_upload_destroy(st->constbuf_uploader);
 158    }
 159
 160    cso_destroy_context(st->cso_context);
 161    free( st );
 162 }
 163
 164
 165 static struct st_context *
 166 st_create_context_priv( struct gl_context *ctx, struct pipe_context *pipe,
 167                 const struct st_config_options *options)
 168 {
 169    struct pipe_screen *screen = pipe->screen;
 170    uint i;
 171    struct st_context *st = ST_CALLOC_STRUCT( st_context );
 172
 173    st->options = *options;
 174
 175    ctx->st = st;
 176
 177    st->ctx = ctx;
 178    st->pipe = pipe;
 179
 180    /* XXX: this is one-off, per-screen init: */
 181    st_debug_init();
 182
 183    /* state tracker needs the VBO module */
 184    _vbo_CreateContext(ctx);
 185
 186    st->dirty.mesa = ~0;
 187    st->dirty.st = ~0;
 188
 189    /* Create upload manager for vertex data for glBitmap, glDrawPixels,
 190     * glClear, etc.
 191     */
 192    st->uploader = u_upload_create(st->pipe, 65536, PIPE_BIND_VERTEX_BUFFER,
 193                                   PIPE_USAGE_STREAM);
 194
 195    if (!screen->get_param(screen, PIPE_CAP_USER_INDEX_BUFFERS)) {
 196       st->indexbuf_uploader = u_upload_create(st->pipe, 128 * 1024,
 197                                               PIPE_BIND_INDEX_BUFFER,
 198                                               PIPE_USAGE_STREAM);
 199    }
 200
 201    if (!screen->get_param(screen, PIPE_CAP_USER_CONSTANT_BUFFERS))
 202       st->constbuf_uploader = u_upload_create(pipe, 128 * 1024,
 203                                               PIPE_BIND_CONSTANT_BUFFER,
 204                                               PIPE_USAGE_STREAM);
 205
 206    st->cso_context = cso_create_context(pipe);
 207
 208    st_init_atoms( st );
 209    st_init_bitmap(st);
 210    st_init_clear(st);
 211    st_init_draw( st );
 212
 213    /* Choose texture target for glDrawPixels, glBitmap, renderbuffers */
 214    if (pipe->screen->get_param(pipe->screen, PIPE_CAP_NPOT_TEXTURES))
 215       st->internal_target = PIPE_TEXTURE_2D;
 216    else
 217       st->internal_target = PIPE_TEXTURE_RECT;
 218
 219    /* Vertex element objects used for drawing rectangles for glBitmap,
 220     * glDrawPixels, glClear, etc.
 221     */
 222    for (i = 0; i < ARRAY_SIZE(st->velems_util_draw); i++) {
 223       memset(&st->velems_util_draw[i], 0, sizeof(struct pipe_vertex_element));
 224       st->velems_util_draw[i].src_offset = i * 4 * sizeof(float);
 225       st->velems_util_draw[i].instance_divisor = 0;
 226       st->velems_util_draw[i].vertex_buffer_index =
 227             cso_get_aux_vertex_buffer_slot(st->cso_context);
 228       st->velems_util_draw[i].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
 229    }
 230
 231    /* we want all vertex data to be placed in buffer objects */
 232    vbo_use_buffer_objects(ctx);
 233
 234
 235    /* make sure that no VBOs are left mapped when we're drawing. */
 236    vbo_always_unmap_buffers(ctx);
 237
 238    /* Need these flags:
 239     */
 240    st->ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
 241
 242    st->ctx->VertexProgram._MaintainTnlProgram = GL_TRUE;
 243
 244    st->has_stencil_export =
 245       screen->get_param(screen, PIPE_CAP_SHADER_STENCIL_EXPORT);
 246    st->has_shader_model3 = screen->get_param(screen, PIPE_CAP_SM3);
 247    st->has_etc1 = screen->is_format_supported(screen, PIPE_FORMAT_ETC1_RGB8,
 248                                               PIPE_TEXTURE_2D, 0,
 249                                               PIPE_BIND_SAMPLER_VIEW);
 250    st->has_etc2 = screen->is_format_supported(screen, PIPE_FORMAT_ETC2_RGB8,
 251                                               PIPE_TEXTURE_2D, 0,
 252                                               PIPE_BIND_SAMPLER_VIEW);
 253    st->prefer_blit_based_texture_transfer = screen->get_param(screen,
 254                               PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER);
 255    st->force_persample_in_shader =
 256       screen->get_param(screen, PIPE_CAP_SAMPLE_SHADING) &&
 257       !screen->get_param(screen, PIPE_CAP_FORCE_PERSAMPLE_INTERP);
 258    st->has_shareable_shaders = screen->get_param(screen,
 259                                                  PIPE_CAP_SHAREABLE_SHADERS);
 260    st->needs_texcoord_semantic =
 261       screen->get_param(screen, PIPE_CAP_TGSI_TEXCOORD);
 262    st->apply_texture_swizzle_to_border_color =
 263       !!(screen->get_param(screen, PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK) &
 264          (PIPE_QUIRK_TEXTURE_BORDER_COLOR_SWIZZLE_NV50 |
 265           PIPE_QUIRK_TEXTURE_BORDER_COLOR_SWIZZLE_R600));
 266    st->has_time_elapsed =
 267       screen->get_param(screen, PIPE_CAP_QUERY_TIME_ELAPSED);
 268    st->has_half_float_packing =
 269       screen->get_param(screen, PIPE_CAP_TGSI_PACK_HALF_FLOAT);
 270    st->has_multi_draw_indirect =
 271       screen->get_param(screen, PIPE_CAP_MULTI_DRAW_INDIRECT);
 272
 273    /* GL limits and extensions */
 274    st_init_limits(st->pipe->screen, &ctx->Const, &ctx->Extensions);
 275    st_init_extensions(st->pipe->screen, &ctx->Const,
 276                       &ctx->Extensions, &st->options, ctx->Mesa_DXTn);
 277
 278    if (st_have_perfmon(st)) {
 279       ctx->Extensions.AMD_performance_monitor = GL_TRUE;
 280    }
 281
 282    /* Enable shader-based fallbacks for ARB_color_buffer_float if needed. */
 283    if (screen->get_param(screen, PIPE_CAP_VERTEX_COLOR_UNCLAMPED)) {
 284       if (!screen->get_param(screen, PIPE_CAP_VERTEX_COLOR_CLAMPED)) {
 285          st->clamp_vert_color_in_shader = GL_TRUE;
 286       }
 287
 288       if (!screen->get_param(screen, PIPE_CAP_FRAGMENT_COLOR_CLAMPED)) {
 289          st->clamp_frag_color_in_shader = GL_TRUE;
 290       }
 291
 292       /* For drivers which cannot do color clamping, it's better to just
 293        * disable ARB_color_buffer_float in the core profile, because
 294        * the clamping is deprecated there anyway. */
 295       if (ctx->API == API_OPENGL_CORE &&
 296           (st->clamp_frag_color_in_shader || st->clamp_vert_color_in_shader)) {
 297          st->clamp_vert_color_in_shader = GL_FALSE;
 298          st->clamp_frag_color_in_shader = GL_FALSE;
 299          ctx->Extensions.ARB_color_buffer_float = GL_FALSE;
 300       }
 301    }
 302
 303    /* called after _mesa_create_context/_mesa_init_point, fix default user
 304     * settable max point size up
 305     */
 306    st->ctx->Point.MaxSize = MAX2(ctx->Const.MaxPointSize,
 307                                  ctx->Const.MaxPointSizeAA);
 308    /* For vertex shaders, make sure not to emit saturate when SM 3.0 is not supported */
 309    ctx->Const.ShaderCompilerOptions[MESA_SHADER_VERTEX].EmitNoSat = !st->has_shader_model3;
 310
 311    if (!ctx->Extensions.ARB_gpu_shader5) {
 312       for (i = 0; i < MESA_SHADER_STAGES; i++)
 313          ctx->Const.ShaderCompilerOptions[i].EmitNoIndirectSampler = true;
 314    }
 315
 316    /* Set which shader types can be compiled at link time. */
 317    st->shader_has_one_variant[MESA_SHADER_VERTEX] =
 318          st->has_shareable_shaders &&
 319          !st->clamp_vert_color_in_shader;
 320
 321    st->shader_has_one_variant[MESA_SHADER_FRAGMENT] =
 322          st->has_shareable_shaders &&
 323          !st->clamp_frag_color_in_shader &&
 324          !st->force_persample_in_shader;
 325
 326    st->shader_has_one_variant[MESA_SHADER_TESS_CTRL] = st->has_shareable_shaders;
 327    st->shader_has_one_variant[MESA_SHADER_TESS_EVAL] = st->has_shareable_shaders;
 328    st->shader_has_one_variant[MESA_SHADER_GEOMETRY] = st->has_shareable_shaders;
 329
 330    _mesa_compute_version(ctx);
 331
 332    if (ctx->Version == 0) {
 333       /* This can happen when a core profile was requested, but the driver
 334        * does not support some features of GL 3.1 or later.
 335        */
 336       st_destroy_context_priv(st);
 337       return NULL;
 338    }
 339
 340    _mesa_initialize_dispatch_tables(ctx);
 341    _mesa_initialize_vbo_vtxfmt(ctx);
 342
 343    return st;
 344 }
 345
 346 static void st_init_driver_flags(struct gl_driver_flags *f)
 347 {
 348    f->NewArray = ST_NEW_VERTEX_ARRAYS;
 349    f->NewRasterizerDiscard = ST_NEW_RASTERIZER;
 350    f->NewUniformBuffer = ST_NEW_UNIFORM_BUFFER;
 351    f->NewDefaultTessLevels = ST_NEW_TESS_STATE;
 352    f->NewTextureBuffer = ST_NEW_SAMPLER_VIEWS;
 353 }
 354
 355 struct st_context *st_create_context(gl_api api, struct pipe_context *pipe,
 356                                      const struct gl_config *visual,
 357                                      struct st_context *share,
 358                                      const struct st_config_options *options)
 359 {
 360    struct gl_context *ctx;
 361    struct gl_context *shareCtx = share ? share->ctx : NULL;
 362    struct dd_function_table funcs;
 363    struct st_context *st;
 364
 365    memset(&funcs, 0, sizeof(funcs));
 366    st_init_driver_functions(pipe->screen, &funcs);
 367
 368    ctx = _mesa_create_context(api, visual, shareCtx, &funcs);
 369    if (!ctx) {
 370       return NULL;
 371    }
 372
 373    st_init_driver_flags(&ctx->DriverFlags);
 374
 375    /* XXX: need a capability bit in gallium to query if the pipe
 376     * driver prefers DP4 or MUL/MAD for vertex transformation.
 377     */
 378    if (debug_get_option_mesa_mvp_dp4())
 379       ctx->Const.ShaderCompilerOptions[MESA_SHADER_VERTEX].OptimizeForAOS = GL_TRUE;
 380
 381    st = st_create_context_priv(ctx, pipe, options);
 382    if (!st) {
 383       _mesa_destroy_context(ctx);
 384    }
 385
 386    return st;
 387 }
 388
 389
 390 /**
 391  * Callback to release the sampler view attached to a texture object.
 392  * Called by _mesa_HashWalk().
 393  */
 394 static void
 395 destroy_tex_sampler_cb(GLuint id, void *data, void *userData)
 396 {
 397    struct gl_texture_object *texObj = (struct gl_texture_object *) data;
 398    struct st_context *st = (struct st_context *) userData;
 399
 400    st_texture_release_sampler_view(st, st_texture_object(texObj));
 401 }
 402
 403 void st_destroy_context( struct st_context *st )
 404 {
 405    struct pipe_context *pipe = st->pipe;
 406    struct gl_context *ctx = st->ctx;
 407    GLuint i;
 408
 409    _mesa_HashWalk(ctx->Shared->TexObjects, destroy_tex_sampler_cb, st);
 410
 411    st_reference_fragprog(st, &st->fp, NULL);
 412    st_reference_geomprog(st, &st->gp, NULL);
 413    st_reference_vertprog(st, &st->vp, NULL);
 414    st_reference_tesscprog(st, &st->tcp, NULL);
 415    st_reference_tesseprog(st, &st->tep, NULL);
 416
 417    /* release framebuffer surfaces */
 418    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
 419       pipe_surface_reference(&st->state.framebuffer.cbufs[i], NULL);
 420    }
 421    pipe_surface_reference(&st->state.framebuffer.zsbuf, NULL);
 422    pipe_sampler_view_reference(&st->pixel_xfer.pixelmap_sampler_view, NULL);
 423    pipe_resource_reference(&st->pixel_xfer.pixelmap_texture, NULL);
 424
 425    _vbo_DestroyContext(st->ctx);
 426
 427    st_destroy_program_variants(st);
 428
 429    _mesa_free_context_data(ctx);
 430
 431    /* This will free the st_context too, so 'st' must not be accessed
 432     * afterwards. */
 433    st_destroy_context_priv(st);
 434    st = NULL;
 435
 436    pipe->destroy( pipe );
 437
 438    free(ctx);
 439 }
 440
 441
 442 void st_init_driver_functions(struct pipe_screen *screen,
 443                               struct dd_function_table *functions)
 444 {
 445    _mesa_init_shader_object_functions(functions);
 446    _mesa_init_sampler_object_functions(functions);
 447
 448    st_init_blit_functions(functions);
 449    st_init_bufferobject_functions(functions);
 450    st_init_clear_functions(functions);
 451    st_init_bitmap_functions(functions);
 452    st_init_copy_image_functions(functions);
 453    st_init_drawpixels_functions(functions);
 454    st_init_rasterpos_functions(functions);
 455
 456    st_init_drawtex_functions(functions);
 457
 458    st_init_eglimage_functions(functions);
 459
 460    st_init_fbo_functions(functions);
 461    st_init_feedback_functions(functions);
 462    st_init_msaa_functions(functions);
 463    st_init_perfmon_functions(functions);
 464    st_init_program_functions(functions);
 465    st_init_query_functions(functions);
 466    st_init_cond_render_functions(functions);
 467    st_init_readpixels_functions(functions);
 468    st_init_texture_functions(functions);
 469    st_init_texture_barrier_functions(functions);
 470    st_init_flush_functions(screen, functions);
 471    st_init_string_functions(functions);
 472    st_init_viewport_functions(functions);
 473
 474    st_init_xformfb_functions(functions);
 475    st_init_syncobj_functions(functions);
 476
 477    st_init_vdpau_functions(functions);
 478
 479    functions->Enable = st_Enable;
 480    functions->UpdateState = st_invalidate_state;
 481 }