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