src/mesa/state_tracker/st_context.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   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 TUNGSTEN GRAPHICS 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 "program/prog_cache.h"
  37 #include "vbo/vbo.h"
  38 #include "glapi/glapi.h"
  39 #include "st_context.h"
  40 #include "st_debug.h"
  41 #include "st_cb_bitmap.h"
  42 #include "st_cb_blit.h"
  43 #include "st_cb_bufferobjects.h"
  44 #include "st_cb_clear.h"
  45 #include "st_cb_condrender.h"
  46 #include "st_cb_drawpixels.h"
  47 #include "st_cb_rasterpos.h"
  48 #include "st_cb_drawtex.h"
  49 #include "st_cb_eglimage.h"
  50 #include "st_cb_fbo.h"
  51 #include "st_cb_feedback.h"
  52 #include "st_cb_program.h"
  53 #include "st_cb_queryobj.h"
  54 #include "st_cb_readpixels.h"
  55 #include "st_cb_texture.h"
  56 #include "st_cb_xformfb.h"
  57 #include "st_cb_flush.h"
  58 #include "st_cb_syncobj.h"
  59 #include "st_cb_strings.h"
  60 #include "st_cb_texturebarrier.h"
  61 #include "st_cb_viewport.h"
  62 #include "st_atom.h"
  63 #include "st_draw.h"
  64 #include "st_extensions.h"
  65 #include "st_gen_mipmap.h"
  66 #include "st_program.h"
  67 #include "pipe/p_context.h"
  68 #include "util/u_inlines.h"
  69 #include "util/u_upload_mgr.h"
  70 #include "cso_cache/cso_context.h"
  71
  72
  73 DEBUG_GET_ONCE_BOOL_OPTION(mesa_mvp_dp4, "MESA_MVP_DP4", FALSE)
  74
  75
  76 /**
  77  * Called via ctx->Driver.UpdateState()
  78  */
  79 void st_invalidate_state(struct gl_context * ctx, GLuint new_state)
  80 {
  81    struct st_context *st = st_context(ctx);
  82
  83    /* Replace _NEW_FRAG_CLAMP with ST_NEW_FRAGMENT_PROGRAM for the fallback. */
  84    if (st->clamp_frag_color_in_shader && (new_state & _NEW_FRAG_CLAMP)) {
  85       new_state &= ~_NEW_FRAG_CLAMP;
  86       st->dirty.st |= ST_NEW_FRAGMENT_PROGRAM;
  87    }
  88
  89    /* Update the vertex shader if ctx->Light._ClampVertexColor was changed. */
  90    if (st->clamp_vert_color_in_shader && (new_state & _NEW_LIGHT)) {
  91       st->dirty.st |= ST_NEW_VERTEX_PROGRAM;
  92    }
  93
  94    st->dirty.mesa |= new_state;
  95    st->dirty.st |= ST_NEW_MESA;
  96
  97    /* This is the only core Mesa module we depend upon.
  98     * No longer use swrast, swsetup, tnl.
  99     */
 100    _vbo_InvalidateState(ctx, new_state);
 101 }
 102
 103 static struct st_context *
 104 st_create_context_priv( struct gl_context *ctx, struct pipe_context *pipe,
 105                 const struct st_config_options *options)
 106 {
 107    struct pipe_screen *screen = pipe->screen;
 108    uint i;
 109    struct st_context *st = ST_CALLOC_STRUCT( st_context );
 110
 111    st->options = *options;
 112
 113    ctx->st = st;
 114
 115    st->ctx = ctx;
 116    st->pipe = pipe;
 117
 118    /* XXX: this is one-off, per-screen init: */
 119    st_debug_init();
 120
 121    /* state tracker needs the VBO module */
 122    _vbo_CreateContext(ctx);
 123
 124    st->dirty.mesa = ~0;
 125    st->dirty.st = ~0;
 126
 127    st->uploader = u_upload_create(st->pipe, 65536, 4, PIPE_BIND_VERTEX_BUFFER);
 128
 129    if (!screen->get_param(screen, PIPE_CAP_USER_INDEX_BUFFERS)) {
 130       st->indexbuf_uploader = u_upload_create(st->pipe, 128 * 1024, 4,
 131                                               PIPE_BIND_INDEX_BUFFER);
 132    }
 133
 134    if (!screen->get_param(screen, PIPE_CAP_USER_CONSTANT_BUFFERS)) {
 135       unsigned alignment =
 136          screen->get_param(screen, PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT);
 137
 138       st->constbuf_uploader = u_upload_create(pipe, 128 * 1024, alignment,
 139                                               PIPE_BIND_CONSTANT_BUFFER);
 140    }
 141
 142    st->cso_context = cso_create_context(pipe);
 143
 144    st_init_atoms( st );
 145    st_init_bitmap(st);
 146    st_init_clear(st);
 147    st_init_draw( st );
 148    st_init_generate_mipmap(st);
 149
 150    if(pipe->screen->get_param(pipe->screen, PIPE_CAP_NPOT_TEXTURES))
 151       st->internal_target = PIPE_TEXTURE_2D;
 152    else
 153       st->internal_target = PIPE_TEXTURE_RECT;
 154
 155    /* Vertex element objects used for drawing rectangles for glBitmap,
 156     * glDrawPixels, glClear, etc.
 157     */
 158    for (i = 0; i < Elements(st->velems_util_draw); i++) {
 159       memset(&st->velems_util_draw[i], 0, sizeof(struct pipe_vertex_element));
 160       st->velems_util_draw[i].src_offset = i * 4 * sizeof(float);
 161       st->velems_util_draw[i].instance_divisor = 0;
 162       st->velems_util_draw[i].vertex_buffer_index =
 163             cso_get_aux_vertex_buffer_slot(st->cso_context);
 164       st->velems_util_draw[i].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
 165    }
 166
 167    /* we want all vertex data to be placed in buffer objects */
 168    vbo_use_buffer_objects(ctx);
 169
 170
 171    /* make sure that no VBOs are left mapped when we're drawing. */
 172    vbo_always_unmap_buffers(ctx);
 173
 174    /* Need these flags:
 175     */
 176    st->ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
 177
 178    st->ctx->VertexProgram._MaintainTnlProgram = GL_TRUE;
 179
 180    st->pixel_xfer.cache = _mesa_new_program_cache();
 181
 182    st->has_stencil_export =
 183       screen->get_param(screen, PIPE_CAP_SHADER_STENCIL_EXPORT);
 184    st->has_shader_model3 = screen->get_param(screen, PIPE_CAP_SM3);
 185
 186    st->needs_texcoord_semantic =
 187       screen->get_param(screen, PIPE_CAP_TGSI_TEXCOORD);
 188
 189    /* GL limits and extensions */
 190    st_init_limits(st);
 191    st_init_extensions(st);
 192
 193    _mesa_compute_version(ctx);
 194
 195    _mesa_initialize_dispatch_tables(ctx);
 196    _mesa_initialize_vbo_vtxfmt(ctx);
 197
 198    return st;
 199 }
 200
 201 static void st_init_driver_flags(struct gl_driver_flags *f)
 202 {
 203    f->NewArray = ST_NEW_VERTEX_ARRAYS;
 204 }
 205
 206 struct st_context *st_create_context(gl_api api, struct pipe_context *pipe,
 207                                      const struct gl_config *visual,
 208                                      struct st_context *share,
 209                                      const struct st_config_options *options)
 210 {
 211    struct gl_context *ctx;
 212    struct gl_context *shareCtx = share ? share->ctx : NULL;
 213    struct dd_function_table funcs;
 214
 215    /* Sanity checks */
 216    STATIC_ASSERT(MESA_SHADER_VERTEX == PIPE_SHADER_VERTEX);
 217    STATIC_ASSERT(MESA_SHADER_FRAGMENT == PIPE_SHADER_FRAGMENT);
 218    STATIC_ASSERT(MESA_SHADER_GEOMETRY == PIPE_SHADER_GEOMETRY);
 219
 220    memset(&funcs, 0, sizeof(funcs));
 221    st_init_driver_functions(&funcs);
 222
 223    ctx = _mesa_create_context(api, visual, shareCtx, &funcs);
 224    if (!ctx) {
 225       return NULL;
 226    }
 227
 228    st_init_driver_flags(&ctx->DriverFlags);
 229
 230    /* XXX: need a capability bit in gallium to query if the pipe
 231     * driver prefers DP4 or MUL/MAD for vertex transformation.
 232     */
 233    if (debug_get_option_mesa_mvp_dp4())
 234       _mesa_set_mvp_with_dp4( ctx, GL_TRUE );
 235
 236    return st_create_context_priv(ctx, pipe, options);
 237 }
 238
 239
 240 static void st_destroy_context_priv( struct st_context *st )
 241 {
 242    uint shader, i;
 243
 244    st_destroy_atoms( st );
 245    st_destroy_draw( st );
 246    st_destroy_generate_mipmap(st);
 247    st_destroy_clear(st);
 248    st_destroy_bitmap(st);
 249    st_destroy_drawpix(st);
 250    st_destroy_drawtex(st);
 251
 252    for (shader = 0; shader < Elements(st->state.sampler_views); shader++) {
 253       for (i = 0; i < Elements(st->state.sampler_views[0]); i++) {
 254          pipe_sampler_view_release(st->pipe,
 255                                    &st->state.sampler_views[shader][i]);
 256       }
 257    }
 258
 259    if (st->default_texture) {
 260       st->ctx->Driver.DeleteTexture(st->ctx, st->default_texture);
 261       st->default_texture = NULL;
 262    }
 263
 264    u_upload_destroy(st->uploader);
 265    if (st->indexbuf_uploader) {
 266       u_upload_destroy(st->indexbuf_uploader);
 267    }
 268    if (st->constbuf_uploader) {
 269       u_upload_destroy(st->constbuf_uploader);
 270    }
 271    free( st );
 272 }
 273
 274
 275 void st_destroy_context( struct st_context *st )
 276 {
 277    struct pipe_context *pipe = st->pipe;
 278    struct cso_context *cso = st->cso_context;
 279    struct gl_context *ctx = st->ctx;
 280    GLuint i;
 281
 282    /* need to unbind and destroy CSO objects before anything else */
 283    cso_release_all(st->cso_context);
 284
 285    st_reference_fragprog(st, &st->fp, NULL);
 286    st_reference_vertprog(st, &st->vp, NULL);
 287
 288    /* release framebuffer surfaces */
 289    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
 290       pipe_surface_reference(&st->state.framebuffer.cbufs[i], NULL);
 291    }
 292    pipe_surface_reference(&st->state.framebuffer.zsbuf, NULL);
 293
 294    pipe->set_index_buffer(pipe, NULL);
 295
 296    for (i = 0; i < PIPE_SHADER_TYPES; i++) {
 297       pipe->set_constant_buffer(pipe, i, 0, NULL);
 298    }
 299
 300    _mesa_delete_program_cache(st->ctx, st->pixel_xfer.cache);
 301
 302    _vbo_DestroyContext(st->ctx);
 303
 304    st_destroy_program_variants(st);
 305
 306    _mesa_free_context_data(ctx);
 307
 308    /* This will free the st_context too, so 'st' must not be accessed
 309     * afterwards. */
 310    st_destroy_context_priv(st);
 311    st = NULL;
 312
 313    cso_destroy_context(cso);
 314
 315    pipe->destroy( pipe );
 316
 317    free(ctx);
 318 }
 319
 320
 321 void st_init_driver_functions(struct dd_function_table *functions)
 322 {
 323    _mesa_init_shader_object_functions(functions);
 324    _mesa_init_sampler_object_functions(functions);
 325
 326    functions->Accum = _mesa_accum;
 327
 328    st_init_blit_functions(functions);
 329    st_init_bufferobject_functions(functions);
 330    st_init_clear_functions(functions);
 331    st_init_bitmap_functions(functions);
 332    st_init_drawpixels_functions(functions);
 333    st_init_rasterpos_functions(functions);
 334
 335    st_init_drawtex_functions(functions);
 336
 337    st_init_eglimage_functions(functions);
 338
 339    st_init_fbo_functions(functions);
 340    st_init_feedback_functions(functions);
 341    st_init_program_functions(functions);
 342    st_init_query_functions(functions);
 343    st_init_cond_render_functions(functions);
 344    st_init_readpixels_functions(functions);
 345    st_init_texture_functions(functions);
 346    st_init_texture_barrier_functions(functions);
 347    st_init_flush_functions(functions);
 348    st_init_string_functions(functions);
 349    st_init_viewport_functions(functions);
 350
 351    st_init_xformfb_functions(functions);
 352    st_init_syncobj_functions(functions);
 353
 354    functions->UpdateState = st_invalidate_state;
 355 }