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 < ARRAY_SIZE(st->state.sampler_views); shader++) {
 121       for (i = 0; i < ARRAY_SIZE(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
 140    cso_destroy_context(st->cso_context);
 141    free( st );
 142 }
 143
 144
 145 static struct st_context *
 146 st_create_context_priv( struct gl_context *ctx, struct pipe_context *pipe,
 147                 const struct st_config_options *options)
 148 {
 149    struct pipe_screen *screen = pipe->screen;
 150    uint i;
 151    struct st_context *st = ST_CALLOC_STRUCT( st_context );
 152
 153    st->options = *options;
 154
 155    ctx->st = st;
 156
 157    st->ctx = ctx;
 158    st->pipe = pipe;
 159
 160    /* XXX: this is one-off, per-screen init: */
 161    st_debug_init();
 162
 163    /* state tracker needs the VBO module */
 164    _vbo_CreateContext(ctx);
 165
 166    st->dirty.mesa = ~0;
 167    st->dirty.st = ~0;
 168
 169    /* Create upload manager for vertex data for glBitmap, glDrawPixels,
 170     * glClear, etc.
 171     */
 172    st->uploader = u_upload_create(st->pipe, 65536, 4, PIPE_BIND_VERTEX_BUFFER);
 173
 174    if (!screen->get_param(screen, PIPE_CAP_USER_INDEX_BUFFERS)) {
 175       st->indexbuf_uploader = u_upload_create(st->pipe, 128 * 1024, 4,
 176                                               PIPE_BIND_INDEX_BUFFER);
 177    }
 178
 179    if (!screen->get_param(screen, PIPE_CAP_USER_CONSTANT_BUFFERS)) {
 180       unsigned alignment =
 181          screen->get_param(screen, PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT);
 182
 183       st->constbuf_uploader = u_upload_create(pipe, 128 * 1024, alignment,
 184                                               PIPE_BIND_CONSTANT_BUFFER);
 185    }
 186
 187    st->cso_context = cso_create_context(pipe);
 188
 189    st_init_atoms( st );
 190    st_init_bitmap(st);
 191    st_init_clear(st);
 192    st_init_draw( st );
 193
 194    /* Choose texture target for glDrawPixels, glBitmap, renderbuffers */
 195    if (pipe->screen->get_param(pipe->screen, PIPE_CAP_NPOT_TEXTURES))
 196       st->internal_target = PIPE_TEXTURE_2D;
 197    else
 198       st->internal_target = PIPE_TEXTURE_RECT;
 199
 200    /* Vertex element objects used for drawing rectangles for glBitmap,
 201     * glDrawPixels, glClear, etc.
 202     */
 203    for (i = 0; i < ARRAY_SIZE(st->velems_util_draw); i++) {
 204       memset(&st->velems_util_draw[i], 0, sizeof(struct pipe_vertex_element));
 205       st->velems_util_draw[i].src_offset = i * 4 * sizeof(float);
 206       st->velems_util_draw[i].instance_divisor = 0;
 207       st->velems_util_draw[i].vertex_buffer_index =
 208             cso_get_aux_vertex_buffer_slot(st->cso_context);
 209       st->velems_util_draw[i].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
 210    }
 211
 212    /* we want all vertex data to be placed in buffer objects */
 213    vbo_use_buffer_objects(ctx);
 214
 215
 216    /* make sure that no VBOs are left mapped when we're drawing. */
 217    vbo_always_unmap_buffers(ctx);
 218
 219    /* Need these flags:
 220     */
 221    st->ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
 222
 223    st->ctx->VertexProgram._MaintainTnlProgram = GL_TRUE;
 224
 225    st->pixel_xfer.cache = _mesa_new_program_cache();
 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
 239    st->needs_texcoord_semantic =
 240       screen->get_param(screen, PIPE_CAP_TGSI_TEXCOORD);
 241    st->apply_texture_swizzle_to_border_color =
 242       !!(screen->get_param(screen, PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK) &
 243          (PIPE_QUIRK_TEXTURE_BORDER_COLOR_SWIZZLE_NV50 |
 244           PIPE_QUIRK_TEXTURE_BORDER_COLOR_SWIZZLE_R600));
 245    st->has_time_elapsed =
 246       screen->get_param(screen, PIPE_CAP_QUERY_TIME_ELAPSED);
 247
 248    /* GL limits and extensions */
 249    st_init_limits(st->pipe->screen, &ctx->Const, &ctx->Extensions);
 250    st_init_extensions(st->pipe->screen, &ctx->Const,
 251                       &ctx->Extensions, &st->options, ctx->Mesa_DXTn);
 252
 253    /* Enable shader-based fallbacks for ARB_color_buffer_float if needed. */
 254    if (screen->get_param(screen, PIPE_CAP_VERTEX_COLOR_UNCLAMPED)) {
 255       if (!screen->get_param(screen, PIPE_CAP_VERTEX_COLOR_CLAMPED)) {
 256          st->clamp_vert_color_in_shader = GL_TRUE;
 257       }
 258
 259       if (!screen->get_param(screen, PIPE_CAP_FRAGMENT_COLOR_CLAMPED)) {
 260          st->clamp_frag_color_in_shader = GL_TRUE;
 261       }
 262
 263       /* For drivers which cannot do color clamping, it's better to just
 264        * disable ARB_color_buffer_float in the core profile, because
 265        * the clamping is deprecated there anyway. */
 266       if (ctx->API == API_OPENGL_CORE &&
 267           (st->clamp_frag_color_in_shader || st->clamp_vert_color_in_shader)) {
 268          st->clamp_vert_color_in_shader = GL_FALSE;
 269          st->clamp_frag_color_in_shader = GL_FALSE;
 270          ctx->Extensions.ARB_color_buffer_float = GL_FALSE;
 271       }
 272    }
 273
 274    /* called after _mesa_create_context/_mesa_init_point, fix default user
 275     * settable max point size up
 276     */
 277    st->ctx->Point.MaxSize = MAX2(ctx->Const.MaxPointSize,
 278                                  ctx->Const.MaxPointSizeAA);
 279    /* For vertex shaders, make sure not to emit saturate when SM 3.0 is not supported */
 280    ctx->Const.ShaderCompilerOptions[MESA_SHADER_VERTEX].EmitNoSat = !st->has_shader_model3;
 281
 282    _mesa_compute_version(ctx);
 283
 284    if (ctx->Version == 0) {
 285       /* This can happen when a core profile was requested, but the driver
 286        * does not support some features of GL 3.1 or later.
 287        */
 288       st_destroy_context_priv(st);
 289       return NULL;
 290    }
 291
 292    _mesa_initialize_dispatch_tables(ctx);
 293    _mesa_initialize_vbo_vtxfmt(ctx);
 294
 295    return st;
 296 }
 297
 298 static void st_init_driver_flags(struct gl_driver_flags *f)
 299 {
 300    f->NewArray = ST_NEW_VERTEX_ARRAYS;
 301    f->NewRasterizerDiscard = ST_NEW_RASTERIZER;
 302    f->NewUniformBuffer = ST_NEW_UNIFORM_BUFFER;
 303 }
 304
 305 struct st_context *st_create_context(gl_api api, struct pipe_context *pipe,
 306                                      const struct gl_config *visual,
 307                                      struct st_context *share,
 308                                      const struct st_config_options *options)
 309 {
 310    struct gl_context *ctx;
 311    struct gl_context *shareCtx = share ? share->ctx : NULL;
 312    struct dd_function_table funcs;
 313    struct st_context *st;
 314
 315    memset(&funcs, 0, sizeof(funcs));
 316    st_init_driver_functions(&funcs);
 317
 318    ctx = _mesa_create_context(api, visual, shareCtx, &funcs);
 319    if (!ctx) {
 320       return NULL;
 321    }
 322
 323    st_init_driver_flags(&ctx->DriverFlags);
 324
 325    /* XXX: need a capability bit in gallium to query if the pipe
 326     * driver prefers DP4 or MUL/MAD for vertex transformation.
 327     */
 328    if (debug_get_option_mesa_mvp_dp4())
 329       ctx->Const.ShaderCompilerOptions[MESA_SHADER_VERTEX].OptimizeForAOS = GL_TRUE;
 330
 331    st = st_create_context_priv(ctx, pipe, options);
 332    if (!st) {
 333       _mesa_destroy_context(ctx);
 334    }
 335
 336    return st;
 337 }
 338
 339
 340 /**
 341  * Callback to release the sampler view attached to a texture object.
 342  * Called by _mesa_HashWalk().
 343  */
 344 static void
 345 destroy_tex_sampler_cb(GLuint id, void *data, void *userData)
 346 {
 347    struct gl_texture_object *texObj = (struct gl_texture_object *) data;
 348    struct st_context *st = (struct st_context *) userData;
 349
 350    st_texture_release_sampler_view(st, st_texture_object(texObj));
 351 }
 352
 353 void st_destroy_context( struct st_context *st )
 354 {
 355    struct pipe_context *pipe = st->pipe;
 356    struct gl_context *ctx = st->ctx;
 357    GLuint i;
 358
 359    _mesa_HashWalk(ctx->Shared->TexObjects, destroy_tex_sampler_cb, st);
 360
 361    st_reference_fragprog(st, &st->fp, NULL);
 362    st_reference_geomprog(st, &st->gp, NULL);
 363    st_reference_vertprog(st, &st->vp, NULL);
 364
 365    /* release framebuffer surfaces */
 366    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
 367       pipe_surface_reference(&st->state.framebuffer.cbufs[i], NULL);
 368    }
 369    pipe_surface_reference(&st->state.framebuffer.zsbuf, NULL);
 370
 371    pipe->set_index_buffer(pipe, NULL);
 372
 373    for (i = 0; i < PIPE_SHADER_TYPES; i++) {
 374       pipe->set_constant_buffer(pipe, i, 0, NULL);
 375    }
 376
 377    _mesa_delete_program_cache(st->ctx, st->pixel_xfer.cache);
 378
 379    _vbo_DestroyContext(st->ctx);
 380
 381    st_destroy_program_variants(st);
 382
 383    _mesa_free_context_data(ctx);
 384
 385    /* This will free the st_context too, so 'st' must not be accessed
 386     * afterwards. */
 387    st_destroy_context_priv(st);
 388    st = NULL;
 389
 390    pipe->destroy( pipe );
 391
 392    free(ctx);
 393 }
 394
 395
 396 void st_init_driver_functions(struct dd_function_table *functions)
 397 {
 398    _mesa_init_shader_object_functions(functions);
 399    _mesa_init_sampler_object_functions(functions);
 400
 401    functions->Accum = _mesa_accum;
 402
 403    st_init_blit_functions(functions);
 404    st_init_bufferobject_functions(functions);
 405    st_init_clear_functions(functions);
 406    st_init_bitmap_functions(functions);
 407    st_init_drawpixels_functions(functions);
 408    st_init_rasterpos_functions(functions);
 409
 410    st_init_drawtex_functions(functions);
 411
 412    st_init_eglimage_functions(functions);
 413
 414    st_init_fbo_functions(functions);
 415    st_init_feedback_functions(functions);
 416    st_init_msaa_functions(functions);
 417    st_init_program_functions(functions);
 418    st_init_query_functions(functions);
 419    st_init_cond_render_functions(functions);
 420    st_init_readpixels_functions(functions);
 421    st_init_texture_functions(functions);
 422    st_init_texture_barrier_functions(functions);
 423    st_init_flush_functions(functions);
 424    st_init_string_functions(functions);
 425    st_init_viewport_functions(functions);
 426
 427    st_init_xformfb_functions(functions);
 428    st_init_syncobj_functions(functions);
 429
 430    st_init_vdpau_functions(functions);
 431
 432    functions->UpdateState = st_invalidate_state;
 433 }