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->pixel_xfer.cache = _mesa_new_program_cache();
 228
 229    st->has_stencil_export =
 230       screen->get_param(screen, PIPE_CAP_SHADER_STENCIL_EXPORT);
 231    st->has_shader_model3 = screen->get_param(screen, PIPE_CAP_SM3);
 232    st->has_etc1 = screen->is_format_supported(screen, PIPE_FORMAT_ETC1_RGB8,
 233                                               PIPE_TEXTURE_2D, 0,
 234                                               PIPE_BIND_SAMPLER_VIEW);
 235    st->has_etc2 = screen->is_format_supported(screen, PIPE_FORMAT_ETC2_RGB8,
 236                                               PIPE_TEXTURE_2D, 0,
 237                                               PIPE_BIND_SAMPLER_VIEW);
 238    st->prefer_blit_based_texture_transfer = screen->get_param(screen,
 239                               PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER);
 240
 241    st->needs_texcoord_semantic =
 242       screen->get_param(screen, PIPE_CAP_TGSI_TEXCOORD);
 243    st->apply_texture_swizzle_to_border_color =
 244       !!(screen->get_param(screen, PIPE_CAP_TEXTURE_BORDER_COLOR_QUIRK) &
 245          (PIPE_QUIRK_TEXTURE_BORDER_COLOR_SWIZZLE_NV50 |
 246           PIPE_QUIRK_TEXTURE_BORDER_COLOR_SWIZZLE_R600));
 247    st->has_time_elapsed =
 248       screen->get_param(screen, PIPE_CAP_QUERY_TIME_ELAPSED);
 249
 250    /* GL limits and extensions */
 251    st_init_limits(st->pipe->screen, &ctx->Const, &ctx->Extensions);
 252    st_init_extensions(st->pipe->screen, &ctx->Const,
 253                       &ctx->Extensions, &st->options, ctx->Mesa_DXTn);
 254
 255    if (st_init_perfmon(st)) {
 256       /* GL_AMD_performance_monitor is only enabled when the underlying
 257        * driver expose GPU hardware performance counters. */
 258       ctx->Extensions.AMD_performance_monitor = GL_TRUE;
 259    }
 260
 261    /* Enable shader-based fallbacks for ARB_color_buffer_float if needed. */
 262    if (screen->get_param(screen, PIPE_CAP_VERTEX_COLOR_UNCLAMPED)) {
 263       if (!screen->get_param(screen, PIPE_CAP_VERTEX_COLOR_CLAMPED)) {
 264          st->clamp_vert_color_in_shader = GL_TRUE;
 265       }
 266
 267       if (!screen->get_param(screen, PIPE_CAP_FRAGMENT_COLOR_CLAMPED)) {
 268          st->clamp_frag_color_in_shader = GL_TRUE;
 269       }
 270
 271       /* For drivers which cannot do color clamping, it's better to just
 272        * disable ARB_color_buffer_float in the core profile, because
 273        * the clamping is deprecated there anyway. */
 274       if (ctx->API == API_OPENGL_CORE &&
 275           (st->clamp_frag_color_in_shader || st->clamp_vert_color_in_shader)) {
 276          st->clamp_vert_color_in_shader = GL_FALSE;
 277          st->clamp_frag_color_in_shader = GL_FALSE;
 278          ctx->Extensions.ARB_color_buffer_float = GL_FALSE;
 279       }
 280    }
 281
 282    /* called after _mesa_create_context/_mesa_init_point, fix default user
 283     * settable max point size up
 284     */
 285    st->ctx->Point.MaxSize = MAX2(ctx->Const.MaxPointSize,
 286                                  ctx->Const.MaxPointSizeAA);
 287    /* For vertex shaders, make sure not to emit saturate when SM 3.0 is not supported */
 288    ctx->Const.ShaderCompilerOptions[MESA_SHADER_VERTEX].EmitNoSat = !st->has_shader_model3;
 289
 290    if (!ctx->Extensions.ARB_gpu_shader5) {
 291       for (i = 0; i < MESA_SHADER_STAGES; i++)
 292          ctx->Const.ShaderCompilerOptions[i].EmitNoIndirectSampler = true;
 293    }
 294
 295    _mesa_compute_version(ctx);
 296
 297    if (ctx->Version == 0) {
 298       /* This can happen when a core profile was requested, but the driver
 299        * does not support some features of GL 3.1 or later.
 300        */
 301       st_destroy_context_priv(st);
 302       return NULL;
 303    }
 304
 305    _mesa_initialize_dispatch_tables(ctx);
 306    _mesa_initialize_vbo_vtxfmt(ctx);
 307
 308    return st;
 309 }
 310
 311 static void st_init_driver_flags(struct gl_driver_flags *f)
 312 {
 313    f->NewArray = ST_NEW_VERTEX_ARRAYS;
 314    f->NewRasterizerDiscard = ST_NEW_RASTERIZER;
 315    f->NewUniformBuffer = ST_NEW_UNIFORM_BUFFER;
 316 }
 317
 318 struct st_context *st_create_context(gl_api api, struct pipe_context *pipe,
 319                                      const struct gl_config *visual,
 320                                      struct st_context *share,
 321                                      const struct st_config_options *options)
 322 {
 323    struct gl_context *ctx;
 324    struct gl_context *shareCtx = share ? share->ctx : NULL;
 325    struct dd_function_table funcs;
 326    struct st_context *st;
 327
 328    memset(&funcs, 0, sizeof(funcs));
 329    st_init_driver_functions(pipe->screen, &funcs);
 330
 331    ctx = _mesa_create_context(api, visual, shareCtx, &funcs);
 332    if (!ctx) {
 333       return NULL;
 334    }
 335
 336    st_init_driver_flags(&ctx->DriverFlags);
 337
 338    /* XXX: need a capability bit in gallium to query if the pipe
 339     * driver prefers DP4 or MUL/MAD for vertex transformation.
 340     */
 341    if (debug_get_option_mesa_mvp_dp4())
 342       ctx->Const.ShaderCompilerOptions[MESA_SHADER_VERTEX].OptimizeForAOS = GL_TRUE;
 343
 344    st = st_create_context_priv(ctx, pipe, options);
 345    if (!st) {
 346       _mesa_destroy_context(ctx);
 347    }
 348
 349    return st;
 350 }
 351
 352
 353 /**
 354  * Callback to release the sampler view attached to a texture object.
 355  * Called by _mesa_HashWalk().
 356  */
 357 static void
 358 destroy_tex_sampler_cb(GLuint id, void *data, void *userData)
 359 {
 360    struct gl_texture_object *texObj = (struct gl_texture_object *) data;
 361    struct st_context *st = (struct st_context *) userData;
 362
 363    st_texture_release_sampler_view(st, st_texture_object(texObj));
 364 }
 365
 366 void st_destroy_context( struct st_context *st )
 367 {
 368    struct pipe_context *pipe = st->pipe;
 369    struct gl_context *ctx = st->ctx;
 370    GLuint i;
 371
 372    _mesa_HashWalk(ctx->Shared->TexObjects, destroy_tex_sampler_cb, st);
 373
 374    st_reference_fragprog(st, &st->fp, NULL);
 375    st_reference_geomprog(st, &st->gp, NULL);
 376    st_reference_vertprog(st, &st->vp, NULL);
 377
 378    /* release framebuffer surfaces */
 379    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
 380       pipe_surface_reference(&st->state.framebuffer.cbufs[i], NULL);
 381    }
 382    pipe_surface_reference(&st->state.framebuffer.zsbuf, NULL);
 383
 384    _mesa_delete_program_cache(st->ctx, st->pixel_xfer.cache);
 385
 386    _vbo_DestroyContext(st->ctx);
 387
 388    st_destroy_program_variants(st);
 389
 390    _mesa_free_context_data(ctx);
 391
 392    /* This will free the st_context too, so 'st' must not be accessed
 393     * afterwards. */
 394    st_destroy_context_priv(st);
 395    st = NULL;
 396
 397    pipe->destroy( pipe );
 398
 399    free(ctx);
 400 }
 401
 402
 403 void st_init_driver_functions(struct pipe_screen *screen,
 404                               struct dd_function_table *functions)
 405 {
 406    _mesa_init_shader_object_functions(functions);
 407    _mesa_init_sampler_object_functions(functions);
 408
 409    functions->Accum = _mesa_accum;
 410
 411    st_init_blit_functions(functions);
 412    st_init_bufferobject_functions(functions);
 413    st_init_clear_functions(functions);
 414    st_init_bitmap_functions(functions);
 415    st_init_drawpixels_functions(functions);
 416    st_init_rasterpos_functions(functions);
 417
 418    st_init_drawtex_functions(functions);
 419
 420    st_init_eglimage_functions(functions);
 421
 422    st_init_fbo_functions(functions);
 423    st_init_feedback_functions(functions);
 424    st_init_msaa_functions(functions);
 425    st_init_perfmon_functions(functions);
 426    st_init_program_functions(functions);
 427    st_init_query_functions(functions);
 428    st_init_cond_render_functions(functions);
 429    st_init_readpixels_functions(functions);
 430    st_init_texture_functions(functions);
 431    st_init_texture_barrier_functions(functions);
 432    st_init_flush_functions(screen, functions);
 433    st_init_string_functions(functions);
 434    st_init_viewport_functions(functions);
 435
 436    st_init_xformfb_functions(functions);
 437    st_init_syncobj_functions(functions);
 438
 439    st_init_vdpau_functions(functions);
 440
 441    functions->UpdateState = st_invalidate_state;
 442 }