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/context.h"
  30 #include "main/shaderobj.h"
  31 #include "program/prog_cache.h"
  32 #include "vbo/vbo.h"
  33 #include "glapi/glapi.h"
  34 #include "st_context.h"
  35 #include "st_debug.h"
  36 #include "st_cb_accum.h"
  37 #include "st_cb_bitmap.h"
  38 #include "st_cb_blit.h"
  39 #include "st_cb_bufferobjects.h"
  40 #include "st_cb_clear.h"
  41 #include "st_cb_condrender.h"
  42 #include "st_cb_drawpixels.h"
  43 #include "st_cb_rasterpos.h"
  44 #include "st_cb_drawtex.h"
  45 #include "st_cb_eglimage.h"
  46 #include "st_cb_fbo.h"
  47 #include "st_cb_feedback.h"
  48 #include "st_cb_program.h"
  49 #include "st_cb_queryobj.h"
  50 #include "st_cb_readpixels.h"
  51 #include "st_cb_texture.h"
  52 #include "st_cb_xformfb.h"
  53 #include "st_cb_flush.h"
  54 #include "st_cb_syncobj.h"
  55 #include "st_cb_strings.h"
  56 #include "st_cb_viewport.h"
  57 #include "st_atom.h"
  58 #include "st_draw.h"
  59 #include "st_extensions.h"
  60 #include "st_gen_mipmap.h"
  61 #include "st_program.h"
  62 #include "pipe/p_context.h"
  63 #include "util/u_inlines.h"
  64 #include "cso_cache/cso_context.h"
  65
  66
  67 DEBUG_GET_ONCE_BOOL_OPTION(mesa_mvp_dp4, "MESA_MVP_DP4", FALSE)
  68
  69
  70 /**
  71  * Called via ctx->Driver.UpdateState()
  72  */
  73 void st_invalidate_state(struct gl_context * ctx, GLuint new_state)
  74 {
  75    struct st_context *st = st_context(ctx);
  76
  77    st->dirty.mesa |= new_state;
  78    st->dirty.st |= ST_NEW_MESA;
  79
  80    /* This is the only core Mesa module we depend upon.
  81     * No longer use swrast, swsetup, tnl.
  82     */
  83    _vbo_InvalidateState(ctx, new_state);
  84 }
  85
  86
  87 /**
  88  * Check for multisample env var override.
  89  */
  90 int
  91 st_get_msaa(void)
  92 {
  93    const char *msaa = _mesa_getenv("__GL_FSAA_MODE");
  94    if (msaa)
  95       return atoi(msaa);
  96    return 0;
  97 }
  98
  99
 100 static struct st_context *
 101 st_create_context_priv( struct gl_context *ctx, struct pipe_context *pipe )
 102 {
 103    uint i;
 104    struct st_context *st = ST_CALLOC_STRUCT( st_context );
 105
 106    ctx->st = st;
 107
 108    st->ctx = ctx;
 109    st->pipe = pipe;
 110
 111    /* XXX: this is one-off, per-screen init: */
 112    st_debug_init();
 113
 114    /* state tracker needs the VBO module */
 115    _vbo_CreateContext(ctx);
 116
 117    st->dirty.mesa = ~0;
 118    st->dirty.st = ~0;
 119
 120    st->cso_context = cso_create_context(pipe);
 121
 122    st_init_atoms( st );
 123    st_init_bitmap(st);
 124    st_init_clear(st);
 125    st_init_draw( st );
 126    st_init_generate_mipmap(st);
 127    st_init_blit(st);
 128
 129    if(pipe->screen->get_param(pipe->screen, PIPE_CAP_NPOT_TEXTURES))
 130       st->internal_target = PIPE_TEXTURE_2D;
 131    else
 132       st->internal_target = PIPE_TEXTURE_RECT;
 133
 134    for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
 135       st->state.sampler_list[i] = &st->state.samplers[i];
 136
 137    for (i = 0; i < 3; i++) {
 138       memset(&st->velems_util_draw[i], 0, sizeof(struct pipe_vertex_element));
 139       st->velems_util_draw[i].src_offset = i * 4 * sizeof(float);
 140       st->velems_util_draw[i].instance_divisor = 0;
 141       st->velems_util_draw[i].vertex_buffer_index = 0;
 142       st->velems_util_draw[i].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
 143    }
 144
 145    /* we want all vertex data to be placed in buffer objects */
 146    vbo_use_buffer_objects(ctx);
 147
 148    /* Need these flags:
 149     */
 150    st->ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
 151
 152    st->ctx->VertexProgram._MaintainTnlProgram = GL_TRUE;
 153
 154    st->pixel_xfer.cache = _mesa_new_program_cache();
 155
 156    st->force_msaa = st_get_msaa();
 157
 158    /* GL limits and extensions */
 159    st_init_limits(st);
 160    st_init_extensions(st);
 161
 162    return st;
 163 }
 164
 165
 166 struct st_context *st_create_context(gl_api api, struct pipe_context *pipe,
 167                                      const struct gl_config *visual,
 168                                      struct st_context *share)
 169 {
 170    struct gl_context *ctx;
 171    struct gl_context *shareCtx = share ? share->ctx : NULL;
 172    struct dd_function_table funcs;
 173
 174    /* Sanity checks */
 175    assert(MESA_SHADER_VERTEX == PIPE_SHADER_VERTEX);
 176    assert(MESA_SHADER_FRAGMENT == PIPE_SHADER_FRAGMENT);
 177    assert(MESA_SHADER_GEOMETRY == PIPE_SHADER_GEOMETRY);
 178
 179    memset(&funcs, 0, sizeof(funcs));
 180    st_init_driver_functions(&funcs);
 181
 182    ctx = _mesa_create_context(api, visual, shareCtx, &funcs, NULL);
 183
 184    /* XXX: need a capability bit in gallium to query if the pipe
 185     * driver prefers DP4 or MUL/MAD for vertex transformation.
 186     */
 187    if (debug_get_option_mesa_mvp_dp4())
 188       _mesa_set_mvp_with_dp4( ctx, GL_TRUE );
 189
 190    return st_create_context_priv(ctx, pipe);
 191 }
 192
 193
 194 static void st_destroy_context_priv( struct st_context *st )
 195 {
 196    uint i;
 197
 198    st_destroy_atoms( st );
 199    st_destroy_draw( st );
 200    st_destroy_generate_mipmap(st);
 201    st_destroy_blit(st);
 202    st_destroy_clear(st);
 203    st_destroy_bitmap(st);
 204    st_destroy_drawpix(st);
 205    st_destroy_drawtex(st);
 206
 207    /* Unreference any user vertex buffers. */
 208    for (i = 0; i < st->num_user_vbs; i++) {
 209       pipe_resource_reference(&st->user_vb[i], NULL);
 210    }
 211
 212    for (i = 0; i < Elements(st->state.sampler_views); i++) {
 213       pipe_sampler_view_reference(&st->state.sampler_views[i], NULL);
 214    }
 215
 216    if (st->default_texture) {
 217       st->ctx->Driver.DeleteTexture(st->ctx, st->default_texture);
 218       st->default_texture = NULL;
 219    }
 220
 221    free( st );
 222 }
 223
 224
 225 void st_destroy_context( struct st_context *st )
 226 {
 227    struct pipe_context *pipe = st->pipe;
 228    struct cso_context *cso = st->cso_context;
 229    struct gl_context *ctx = st->ctx;
 230    GLuint i;
 231
 232    /* need to unbind and destroy CSO objects before anything else */
 233    cso_release_all(st->cso_context);
 234
 235    st_reference_fragprog(st, &st->fp, NULL);
 236    st_reference_vertprog(st, &st->vp, NULL);
 237
 238    /* release framebuffer surfaces */
 239    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
 240       pipe_surface_reference(&st->state.framebuffer.cbufs[i], NULL);
 241    }
 242    pipe_surface_reference(&st->state.framebuffer.zsbuf, NULL);
 243
 244    pipe->set_index_buffer(pipe, NULL);
 245
 246    for (i = 0; i < PIPE_SHADER_TYPES; i++) {
 247       pipe->set_constant_buffer(pipe, i, 0, NULL);
 248    }
 249
 250    _mesa_delete_program_cache(st->ctx, st->pixel_xfer.cache);
 251
 252    _vbo_DestroyContext(st->ctx);
 253
 254    st_destroy_program_variants(st);
 255
 256    _mesa_free_context_data(ctx);
 257
 258    st_destroy_context_priv(st);
 259
 260    cso_destroy_context(cso);
 261
 262    pipe->destroy( pipe );
 263
 264    free(ctx);
 265 }
 266
 267
 268 void st_init_driver_functions(struct dd_function_table *functions)
 269 {
 270    _mesa_init_shader_object_functions(functions);
 271
 272    st_init_accum_functions(functions);
 273    st_init_blit_functions(functions);
 274    st_init_bufferobject_functions(functions);
 275    st_init_clear_functions(functions);
 276    st_init_bitmap_functions(functions);
 277    st_init_drawpixels_functions(functions);
 278    st_init_rasterpos_functions(functions);
 279
 280    st_init_drawtex_functions(functions);
 281
 282    st_init_eglimage_functions(functions);
 283
 284    st_init_fbo_functions(functions);
 285    st_init_feedback_functions(functions);
 286    st_init_program_functions(functions);
 287    st_init_query_functions(functions);
 288    st_init_cond_render_functions(functions);
 289    st_init_readpixels_functions(functions);
 290    st_init_texture_functions(functions);
 291    st_init_flush_functions(functions);
 292    st_init_string_functions(functions);
 293    st_init_viewport_functions(functions);
 294
 295    st_init_xformfb_functions(functions);
 296    st_init_syncobj_functions(functions);
 297
 298    functions->UpdateState = st_invalidate_state;
 299 }