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