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