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/samplerobj.h"
  31 #include "main/shaderobj.h"
  32 #include "program/prog_cache.h"
  33 #include "vbo/vbo.h"
  34 #include "glapi/glapi.h"
  35 #include "st_context.h"
  36 #include "st_debug.h"
  37 #include "st_cb_accum.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 "cso_cache/cso_context.h"
  67
  68
  69 DEBUG_GET_ONCE_BOOL_OPTION(mesa_mvp_dp4, "MESA_MVP_DP4", FALSE)
  70
  71
  72 /**
  73  * Called via ctx->Driver.UpdateState()
  74  */
  75 void st_invalidate_state(struct gl_context * ctx, GLuint new_state)
  76 {
  77    struct st_context *st = st_context(ctx);
  78
  79    st->dirty.mesa |= new_state;
  80    st->dirty.st |= ST_NEW_MESA;
  81
  82    /* This is the only core Mesa module we depend upon.
  83     * No longer use swrast, swsetup, tnl.
  84     */
  85    _vbo_InvalidateState(ctx, new_state);
  86 }
  87
  88
  89 /**
  90  * Check for multisample env var override.
  91  */
  92 int
  93 st_get_msaa(void)
  94 {
  95    const char *msaa = _mesa_getenv("__GL_FSAA_MODE");
  96    if (msaa)
  97       return atoi(msaa);
  98    return 0;
  99 }
 100
 101
 102 static struct st_context *
 103 st_create_context_priv( struct gl_context *ctx, struct pipe_context *pipe )
 104 {
 105    uint i;
 106    struct st_context *st = ST_CALLOC_STRUCT( st_context );
 107
 108    ctx->st = st;
 109
 110    st->ctx = ctx;
 111    st->pipe = pipe;
 112
 113    /* XXX: this is one-off, per-screen init: */
 114    st_debug_init();
 115
 116    /* state tracker needs the VBO module */
 117    _vbo_CreateContext(ctx);
 118
 119    st->dirty.mesa = ~0;
 120    st->dirty.st = ~0;
 121
 122    st->cso_context = cso_create_context(pipe);
 123
 124    st_init_atoms( st );
 125    st_init_bitmap(st);
 126    st_init_clear(st);
 127    st_init_draw( st );
 128    st_init_generate_mipmap(st);
 129    st_init_blit(st);
 130
 131    if(pipe->screen->get_param(pipe->screen, PIPE_CAP_NPOT_TEXTURES))
 132       st->internal_target = PIPE_TEXTURE_2D;
 133    else
 134       st->internal_target = PIPE_TEXTURE_RECT;
 135
 136    for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
 137       st->state.sampler_list[i] = &st->state.samplers[i];
 138
 139    for (i = 0; i < 3; i++) {
 140       memset(&st->velems_util_draw[i], 0, sizeof(struct pipe_vertex_element));
 141       st->velems_util_draw[i].src_offset = i * 4 * sizeof(float);
 142       st->velems_util_draw[i].instance_divisor = 0;
 143       st->velems_util_draw[i].vertex_buffer_index = 0;
 144       st->velems_util_draw[i].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
 145    }
 146
 147    /* we want all vertex data to be placed in buffer objects */
 148    vbo_use_buffer_objects(ctx);
 149
 150    /* Need these flags:
 151     */
 152    st->ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
 153
 154    st->ctx->VertexProgram._MaintainTnlProgram = GL_TRUE;
 155
 156    st->pixel_xfer.cache = _mesa_new_program_cache();
 157
 158    st->force_msaa = st_get_msaa();
 159
 160    /* GL limits and extensions */
 161    st_init_limits(st);
 162    st_init_extensions(st);
 163
 164    return st;
 165 }
 166
 167
 168 struct st_context *st_create_context(gl_api api, struct pipe_context *pipe,
 169                                      const struct gl_config *visual,
 170                                      struct st_context *share)
 171 {
 172    struct gl_context *ctx;
 173    struct gl_context *shareCtx = share ? share->ctx : NULL;
 174    struct dd_function_table funcs;
 175
 176    /* Sanity checks */
 177    assert(MESA_SHADER_VERTEX == PIPE_SHADER_VERTEX);
 178    assert(MESA_SHADER_FRAGMENT == PIPE_SHADER_FRAGMENT);
 179    assert(MESA_SHADER_GEOMETRY == PIPE_SHADER_GEOMETRY);
 180
 181    memset(&funcs, 0, sizeof(funcs));
 182    st_init_driver_functions(&funcs);
 183
 184    ctx = _mesa_create_context(api, visual, shareCtx, &funcs, NULL);
 185
 186    /* XXX: need a capability bit in gallium to query if the pipe
 187     * driver prefers DP4 or MUL/MAD for vertex transformation.
 188     */
 189    if (debug_get_option_mesa_mvp_dp4())
 190       _mesa_set_mvp_with_dp4( ctx, GL_TRUE );
 191
 192    return st_create_context_priv(ctx, pipe);
 193 }
 194
 195
 196 static void st_destroy_context_priv( struct st_context *st )
 197 {
 198    uint i;
 199
 200    st_destroy_atoms( st );
 201    st_destroy_draw( st );
 202    st_destroy_generate_mipmap(st);
 203    st_destroy_blit(st);
 204    st_destroy_clear(st);
 205    st_destroy_bitmap(st);
 206    st_destroy_drawpix(st);
 207    st_destroy_drawtex(st);
 208
 209    /* Unreference any user vertex buffers. */
 210    for (i = 0; i < st->num_user_attribs; i++) {
 211       pipe_resource_reference(&st->user_attrib[i].buffer, NULL);
 212    }
 213
 214    for (i = 0; i < Elements(st->state.sampler_views); i++) {
 215       pipe_sampler_view_reference(&st->state.sampler_views[i], NULL);
 216    }
 217
 218    if (st->default_texture) {
 219       st->ctx->Driver.DeleteTexture(st->ctx, st->default_texture);
 220       st->default_texture = NULL;
 221    }
 222
 223    free( st );
 224 }
 225
 226
 227 void st_destroy_context( struct st_context *st )
 228 {
 229    struct pipe_context *pipe = st->pipe;
 230    struct cso_context *cso = st->cso_context;
 231    struct gl_context *ctx = st->ctx;
 232    GLuint i;
 233
 234    /* need to unbind and destroy CSO objects before anything else */
 235    cso_release_all(st->cso_context);
 236
 237    st_reference_fragprog(st, &st->fp, NULL);
 238    st_reference_vertprog(st, &st->vp, NULL);
 239
 240    /* release framebuffer surfaces */
 241    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
 242       pipe_surface_reference(&st->state.framebuffer.cbufs[i], NULL);
 243    }
 244    pipe_surface_reference(&st->state.framebuffer.zsbuf, NULL);
 245
 246    pipe->set_index_buffer(pipe, NULL);
 247
 248    for (i = 0; i < PIPE_SHADER_TYPES; i++) {
 249       pipe->set_constant_buffer(pipe, i, 0, NULL);
 250    }
 251
 252    _mesa_delete_program_cache(st->ctx, st->pixel_xfer.cache);
 253
 254    _vbo_DestroyContext(st->ctx);
 255
 256    st_destroy_program_variants(st);
 257
 258    _mesa_free_context_data(ctx);
 259
 260    st_destroy_context_priv(st);
 261
 262    cso_destroy_context(cso);
 263
 264    pipe->destroy( pipe );
 265
 266    free(ctx);
 267 }
 268
 269
 270 void st_init_driver_functions(struct dd_function_table *functions)
 271 {
 272    _mesa_init_shader_object_functions(functions);
 273    _mesa_init_sampler_object_functions(functions);
 274
 275    st_init_accum_functions(functions);
 276    st_init_blit_functions(functions);
 277    st_init_bufferobject_functions(functions);
 278    st_init_clear_functions(functions);
 279    st_init_bitmap_functions(functions);
 280    st_init_drawpixels_functions(functions);
 281    st_init_rasterpos_functions(functions);
 282
 283    st_init_drawtex_functions(functions);
 284
 285    st_init_eglimage_functions(functions);
 286
 287    st_init_fbo_functions(functions);
 288    st_init_feedback_functions(functions);
 289    st_init_program_functions(functions);
 290    st_init_query_functions(functions);
 291    st_init_cond_render_functions(functions);
 292    st_init_readpixels_functions(functions);
 293    st_init_texture_functions(functions);
 294    st_init_texture_barrier_functions(functions);
 295    st_init_flush_functions(functions);
 296    st_init_string_functions(functions);
 297    st_init_viewport_functions(functions);
 298
 299    st_init_xformfb_functions(functions);
 300    st_init_syncobj_functions(functions);
 301
 302    functions->UpdateState = st_invalidate_state;
 303 }