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/context.h"
  31 #include "main/samplerobj.h"
  32 #include "main/shaderobj.h"
  33 #include "program/prog_cache.h"
  34 #include "vbo/vbo.h"
  35 #include "glapi/glapi.h"
  36 #include "st_context.h"
  37 #include "st_debug.h"
  38 #include "st_cb_bitmap.h"
  39 #include "st_cb_blit.h"
  40 #include "st_cb_bufferobjects.h"
  41 #include "st_cb_clear.h"
  42 #include "st_cb_condrender.h"
  43 #include "st_cb_drawpixels.h"
  44 #include "st_cb_rasterpos.h"
  45 #include "st_cb_drawtex.h"
  46 #include "st_cb_eglimage.h"
  47 #include "st_cb_fbo.h"
  48 #include "st_cb_feedback.h"
  49 #include "st_cb_program.h"
  50 #include "st_cb_queryobj.h"
  51 #include "st_cb_readpixels.h"
  52 #include "st_cb_texture.h"
  53 #include "st_cb_xformfb.h"
  54 #include "st_cb_flush.h"
  55 #include "st_cb_syncobj.h"
  56 #include "st_cb_strings.h"
  57 #include "st_cb_texturebarrier.h"
  58 #include "st_cb_viewport.h"
  59 #include "st_atom.h"
  60 #include "st_draw.h"
  61 #include "st_extensions.h"
  62 #include "st_gen_mipmap.h"
  63 #include "st_program.h"
  64 #include "pipe/p_context.h"
  65 #include "util/u_inlines.h"
  66 #include "util/u_upload_mgr.h"
  67 #include "cso_cache/cso_context.h"
  68
  69
  70 DEBUG_GET_ONCE_BOOL_OPTION(mesa_mvp_dp4, "MESA_MVP_DP4", FALSE)
  71
  72
  73 /**
  74  * Called via ctx->Driver.UpdateState()
  75  */
  76 void st_invalidate_state(struct gl_context * ctx, GLuint new_state)
  77 {
  78    struct st_context *st = st_context(ctx);
  79
  80    /* Replace _NEW_FRAG_CLAMP with ST_NEW_FRAGMENT_PROGRAM for the fallback. */
  81    if (st->clamp_frag_color_in_shader && (new_state & _NEW_FRAG_CLAMP)) {
  82       new_state &= ~_NEW_FRAG_CLAMP;
  83       st->dirty.st |= ST_NEW_FRAGMENT_PROGRAM;
  84    }
  85
  86    /* Update the vertex shader if ctx->Light._ClampVertexColor was changed. */
  87    if (st->clamp_vert_color_in_shader && (new_state & _NEW_LIGHT)) {
  88       st->dirty.st |= ST_NEW_VERTEX_PROGRAM;
  89    }
  90
  91    st->dirty.mesa |= new_state;
  92    st->dirty.st |= ST_NEW_MESA;
  93
  94    /* This is the only core Mesa module we depend upon.
  95     * No longer use swrast, swsetup, tnl.
  96     */
  97    _vbo_InvalidateState(ctx, new_state);
  98 }
  99
 100
 101 /**
 102  * Check for multisample env var override.
 103  */
 104 int
 105 st_get_msaa(void)
 106 {
 107    const char *msaa = _mesa_getenv("__GL_FSAA_MODE");
 108    if (msaa)
 109       return atoi(msaa);
 110    return 0;
 111 }
 112
 113
 114
 115
 116 static struct st_context *
 117 st_create_context_priv( struct gl_context *ctx, struct pipe_context *pipe,
 118                 const struct st_config_options *options)
 119 {
 120    struct pipe_screen *screen = pipe->screen;
 121    uint i;
 122    struct st_context *st = ST_CALLOC_STRUCT( st_context );
 123
 124    st->options = *options;
 125
 126    ctx->st = st;
 127
 128    st->ctx = ctx;
 129    st->pipe = pipe;
 130
 131    /* XXX: this is one-off, per-screen init: */
 132    st_debug_init();
 133
 134    /* state tracker needs the VBO module */
 135    _vbo_CreateContext(ctx);
 136
 137    st->dirty.mesa = ~0;
 138    st->dirty.st = ~0;
 139
 140    st->uploader = u_upload_create(st->pipe, 65536, 4, PIPE_BIND_VERTEX_BUFFER);
 141
 142    if (!screen->get_param(screen, PIPE_CAP_USER_INDEX_BUFFERS)) {
 143       st->indexbuf_uploader = u_upload_create(st->pipe, 128 * 1024, 4,
 144                                               PIPE_BIND_INDEX_BUFFER);
 145    }
 146
 147    if (!screen->get_param(screen, PIPE_CAP_USER_CONSTANT_BUFFERS)) {
 148       unsigned alignment =
 149          screen->get_param(screen, PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT);
 150
 151       st->constbuf_uploader = u_upload_create(pipe, 128 * 1024, alignment,
 152                                               PIPE_BIND_CONSTANT_BUFFER);
 153    }
 154
 155    st->cso_context = cso_create_context(pipe);
 156
 157    st_init_atoms( st );
 158    st_init_bitmap(st);
 159    st_init_clear(st);
 160    st_init_draw( st );
 161    st_init_generate_mipmap(st);
 162    st_init_blit(st);
 163
 164    if(pipe->screen->get_param(pipe->screen, PIPE_CAP_NPOT_TEXTURES))
 165       st->internal_target = PIPE_TEXTURE_2D;
 166    else
 167       st->internal_target = PIPE_TEXTURE_RECT;
 168
 169    /* Vertex element objects used for drawing rectangles for glBitmap,
 170     * glDrawPixels, glClear, etc.
 171     */
 172    for (i = 0; i < Elements(st->velems_util_draw); i++) {
 173       memset(&st->velems_util_draw[i], 0, sizeof(struct pipe_vertex_element));
 174       st->velems_util_draw[i].src_offset = i * 4 * sizeof(float);
 175       st->velems_util_draw[i].instance_divisor = 0;
 176       st->velems_util_draw[i].vertex_buffer_index = 0;
 177       st->velems_util_draw[i].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
 178    }
 179
 180    /* we want all vertex data to be placed in buffer objects */
 181    vbo_use_buffer_objects(ctx);
 182
 183
 184    /* make sure that no VBOs are left mapped when we're drawing. */
 185    vbo_always_unmap_buffers(ctx);
 186
 187    /* Need these flags:
 188     */
 189    st->ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
 190
 191    st->ctx->VertexProgram._MaintainTnlProgram = GL_TRUE;
 192
 193    st->pixel_xfer.cache = _mesa_new_program_cache();
 194
 195    st->force_msaa = st_get_msaa();
 196    st->has_stencil_export =
 197       screen->get_param(screen, PIPE_CAP_SHADER_STENCIL_EXPORT);
 198
 199    /* GL limits and extensions */
 200    st_init_limits(st);
 201    st_init_extensions(st);
 202
 203    return st;
 204 }
 205
 206 static void st_init_driver_flags(struct gl_driver_flags *f)
 207 {
 208    f->NewArray = ST_NEW_VERTEX_ARRAYS;
 209 }
 210
 211 struct st_context *st_create_context(gl_api api, struct pipe_context *pipe,
 212                                      const struct gl_config *visual,
 213                                      struct st_context *share,
 214                                      const struct st_config_options *options)
 215 {
 216    struct gl_context *ctx;
 217    struct gl_context *shareCtx = share ? share->ctx : NULL;
 218    struct dd_function_table funcs;
 219
 220    /* Sanity checks */
 221    STATIC_ASSERT(MESA_SHADER_VERTEX == PIPE_SHADER_VERTEX);
 222    STATIC_ASSERT(MESA_SHADER_FRAGMENT == PIPE_SHADER_FRAGMENT);
 223    STATIC_ASSERT(MESA_SHADER_GEOMETRY == PIPE_SHADER_GEOMETRY);
 224
 225    memset(&funcs, 0, sizeof(funcs));
 226    st_init_driver_functions(&funcs);
 227
 228    ctx = _mesa_create_context(api, visual, shareCtx, &funcs, NULL);
 229    if (!ctx) {
 230       return NULL;
 231    }
 232
 233    st_init_driver_flags(&ctx->DriverFlags);
 234
 235    /* XXX: need a capability bit in gallium to query if the pipe
 236     * driver prefers DP4 or MUL/MAD for vertex transformation.
 237     */
 238    if (debug_get_option_mesa_mvp_dp4())
 239       _mesa_set_mvp_with_dp4( ctx, GL_TRUE );
 240
 241    return st_create_context_priv(ctx, pipe, options);
 242 }
 243
 244
 245 static void st_destroy_context_priv( struct st_context *st )
 246 {
 247    uint shader, i;
 248
 249    st_destroy_atoms( st );
 250    st_destroy_draw( st );
 251    st_destroy_generate_mipmap(st);
 252    st_destroy_blit(st);
 253    st_destroy_clear(st);
 254    st_destroy_bitmap(st);
 255    st_destroy_drawpix(st);
 256    st_destroy_drawtex(st);
 257
 258    for (shader = 0; shader < Elements(st->state.sampler_views); shader++) {
 259       for (i = 0; i < Elements(st->state.sampler_views[0]); i++) {
 260          pipe_sampler_view_release(st->pipe,
 261                                    &st->state.sampler_views[shader][i]);
 262       }
 263    }
 264
 265    if (st->default_texture) {
 266       st->ctx->Driver.DeleteTexture(st->ctx, st->default_texture);
 267       st->default_texture = NULL;
 268    }
 269
 270    u_upload_destroy(st->uploader);
 271    if (st->indexbuf_uploader) {
 272       u_upload_destroy(st->indexbuf_uploader);
 273    }
 274    if (st->constbuf_uploader) {
 275       u_upload_destroy(st->constbuf_uploader);
 276    }
 277    free( st );
 278 }
 279
 280
 281 void st_destroy_context( struct st_context *st )
 282 {
 283    struct pipe_context *pipe = st->pipe;
 284    struct cso_context *cso = st->cso_context;
 285    struct gl_context *ctx = st->ctx;
 286    GLuint i;
 287
 288    /* need to unbind and destroy CSO objects before anything else */
 289    cso_release_all(st->cso_context);
 290
 291    st_reference_fragprog(st, &st->fp, NULL);
 292    st_reference_vertprog(st, &st->vp, NULL);
 293
 294    /* release framebuffer surfaces */
 295    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
 296       pipe_surface_reference(&st->state.framebuffer.cbufs[i], NULL);
 297    }
 298    pipe_surface_reference(&st->state.framebuffer.zsbuf, NULL);
 299
 300    pipe->set_index_buffer(pipe, NULL);
 301
 302    for (i = 0; i < PIPE_SHADER_TYPES; i++) {
 303       pipe->set_constant_buffer(pipe, i, 0, NULL);
 304    }
 305
 306    _mesa_delete_program_cache(st->ctx, st->pixel_xfer.cache);
 307
 308    _vbo_DestroyContext(st->ctx);
 309
 310    st_destroy_program_variants(st);
 311
 312    _mesa_free_context_data(ctx);
 313
 314    /* This will free the st_context too, so 'st' must not be accessed
 315     * afterwards. */
 316    st_destroy_context_priv(st);
 317    st = NULL;
 318
 319    cso_destroy_context(cso);
 320
 321    pipe->destroy( pipe );
 322
 323    free(ctx);
 324 }
 325
 326
 327 void st_init_driver_functions(struct dd_function_table *functions)
 328 {
 329    _mesa_init_shader_object_functions(functions);
 330    _mesa_init_sampler_object_functions(functions);
 331
 332    functions->Accum = _mesa_accum;
 333
 334    st_init_blit_functions(functions);
 335    st_init_bufferobject_functions(functions);
 336    st_init_clear_functions(functions);
 337    st_init_bitmap_functions(functions);
 338    st_init_drawpixels_functions(functions);
 339    st_init_rasterpos_functions(functions);
 340
 341    st_init_drawtex_functions(functions);
 342
 343    st_init_eglimage_functions(functions);
 344
 345    st_init_fbo_functions(functions);
 346    st_init_feedback_functions(functions);
 347    st_init_program_functions(functions);
 348    st_init_query_functions(functions);
 349    st_init_cond_render_functions(functions);
 350    st_init_readpixels_functions(functions);
 351    st_init_texture_functions(functions);
 352    st_init_texture_barrier_functions(functions);
 353    st_init_flush_functions(functions);
 354    st_init_string_functions(functions);
 355    st_init_viewport_functions(functions);
 356
 357    st_init_xformfb_functions(functions);
 358    st_init_syncobj_functions(functions);
 359
 360    functions->UpdateState = st_invalidate_state;
 361 }