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