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 "vbo/vbo.h"
  31 #include "shader/shader_api.h"
  32 #include "glapi/glapi.h"
  33 #include "st_context.h"
  34 #include "st_debug.h"
  35 #include "st_cb_accum.h"
  36 #include "st_cb_bitmap.h"
  37 #include "st_cb_blit.h"
  38 #include "st_cb_bufferobjects.h"
  39 #include "st_cb_clear.h"
  40 #include "st_cb_condrender.h"
  41 #if FEATURE_drawpix
  42 #include "st_cb_drawpixels.h"
  43 #include "st_cb_rasterpos.h"
  44 #endif
  45 #if FEATURE_OES_draw_texture
  46 #include "st_cb_drawtex.h"
  47 #endif
  48 #include "st_cb_eglimage.h"
  49 #include "st_cb_fbo.h"
  50 #if FEATURE_feedback
  51 #include "st_cb_feedback.h"
  52 #endif
  53 #include "st_cb_program.h"
  54 #include "st_cb_queryobj.h"
  55 #include "st_cb_readpixels.h"
  56 #include "st_cb_texture.h"
  57 #if FEATURE_EXT_transform_feedback
  58 #include "st_cb_xformfb.h"
  59 #endif
  60 #include "st_cb_flush.h"
  61 #include "st_cb_strings.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_rect.h"
  70 #include "util/u_surface.h"
  71 #include "draw/draw_context.h"
  72 #include "cso_cache/cso_context.h"
  73
  74
  75 /**
  76  * Called via ctx->Driver.UpdateState()
  77  */
  78 void st_invalidate_state(GLcontext * ctx, GLuint new_state)
  79 {
  80    struct st_context *st = st_context(ctx);
  81
  82    st->dirty.mesa |= new_state;
  83    st->dirty.st |= ST_NEW_MESA;
  84
  85    /* This is the only core Mesa module we depend upon.
  86     * No longer use swrast, swsetup, tnl.
  87     */
  88    _vbo_InvalidateState(ctx, new_state);
  89 }
  90
  91
  92 /**
  93  * Check for multisample env var override.
  94  */
  95 int
  96 st_get_msaa(void)
  97 {
  98    const char *msaa = _mesa_getenv("__GL_FSAA_MODE");
  99    if (msaa)
 100       return atoi(msaa);
 101    return 0;
 102 }
 103
 104
 105 /** Default method for pipe_context::surface_copy() */
 106 static void
 107 st_surface_copy(struct pipe_context *pipe,
 108                 struct pipe_surface *dst,
 109                 unsigned dst_x, unsigned dst_y,
 110                 struct pipe_surface *src,
 111                 unsigned src_x, unsigned src_y,
 112                 unsigned w, unsigned h)
 113 {
 114    util_surface_copy(pipe, FALSE, dst, dst_x, dst_y, src, src_x, src_y, w, h);
 115 }
 116
 117
 118 static struct st_context *
 119 st_create_context_priv( GLcontext *ctx, struct pipe_context *pipe )
 120 {
 121    uint i;
 122    struct st_context *st = ST_CALLOC_STRUCT( st_context );
 123
 124    ctx->st = st;
 125
 126    st->ctx = ctx;
 127    st->pipe = pipe;
 128
 129    /* XXX: this is one-off, per-screen init: */
 130    st_debug_init();
 131
 132    /* state tracker needs the VBO module */
 133    _vbo_CreateContext(ctx);
 134
 135 #if FEATURE_feedback || FEATURE_drawpix
 136    st->draw = draw_create(pipe); /* for selection/feedback */
 137
 138    /* Disable draw options that might convert points/lines to tris, etc.
 139     * as that would foul-up feedback/selection mode.
 140     */
 141    draw_wide_line_threshold(st->draw, 1000.0f);
 142    draw_wide_point_threshold(st->draw, 1000.0f);
 143    draw_enable_line_stipple(st->draw, FALSE);
 144    draw_enable_point_sprites(st->draw, FALSE);
 145 #endif
 146
 147    st->dirty.mesa = ~0;
 148    st->dirty.st = ~0;
 149
 150    st->cso_context = cso_create_context(pipe);
 151
 152    st_init_atoms( st );
 153    st_init_bitmap(st);
 154    st_init_clear(st);
 155    st_init_draw( st );
 156    st_init_generate_mipmap(st);
 157    st_init_blit(st);
 158
 159    for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
 160       st->state.sampler_list[i] = &st->state.samplers[i];
 161
 162    for (i = 0; i < 3; i++) {
 163       memset(&st->velems_util_draw[i], 0, sizeof(struct pipe_vertex_element));
 164       st->velems_util_draw[i].src_offset = i * 4 * sizeof(float);
 165       st->velems_util_draw[i].instance_divisor = 0;
 166       st->velems_util_draw[i].vertex_buffer_index = 0;
 167       st->velems_util_draw[i].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
 168    }
 169
 170    /* we want all vertex data to be placed in buffer objects */
 171    vbo_use_buffer_objects(ctx);
 172
 173    /* Need these flags:
 174     */
 175    st->ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
 176
 177    st->ctx->VertexProgram._MaintainTnlProgram = GL_TRUE;
 178
 179    st->pixel_xfer.cache = _mesa_new_program_cache();
 180
 181    st->force_msaa = st_get_msaa();
 182
 183    /* GL limits and extensions */
 184    st_init_limits(st);
 185    st_init_extensions(st);
 186
 187    /* plug in helper driver functions if needed */
 188    if (!pipe->surface_copy)
 189       pipe->surface_copy = st_surface_copy;
 190
 191    return st;
 192 }
 193
 194
 195 struct st_context *st_create_context(struct pipe_context *pipe,
 196                                      const __GLcontextModes *visual,
 197                                      struct st_context *share)
 198 {
 199    GLcontext *ctx;
 200    GLcontext *shareCtx = share ? share->ctx : NULL;
 201    struct dd_function_table funcs;
 202
 203    memset(&funcs, 0, sizeof(funcs));
 204    st_init_driver_functions(&funcs);
 205
 206 #if FEATURE_GL
 207    ctx = _mesa_create_context_for_api(API_OPENGL,
 208                                       visual, shareCtx, &funcs, NULL);
 209 #elif FEATURE_ES1
 210    ctx = _mesa_create_context_for_api(API_OPENGLES,
 211                                       visual, shareCtx, &funcs, NULL);
 212 #elif FEATURE_ES2
 213    ctx = _mesa_create_context_for_api(API_OPENGLES2,
 214                                       visual, shareCtx, &funcs, NULL);
 215 #endif
 216
 217    /* XXX: need a capability bit in gallium to query if the pipe
 218     * driver prefers DP4 or MUL/MAD for vertex transformation.
 219     */
 220    if (debug_get_bool_option("MESA_MVP_DP4", FALSE))
 221       _mesa_set_mvp_with_dp4( ctx, GL_TRUE );
 222
 223    return st_create_context_priv(ctx, pipe);
 224 }
 225
 226
 227 static void st_destroy_context_priv( struct st_context *st )
 228 {
 229    uint i;
 230
 231 #if FEATURE_feedback || FEATURE_drawpix
 232    draw_destroy(st->draw);
 233 #endif
 234    st_destroy_atoms( st );
 235    st_destroy_draw( st );
 236    st_destroy_generate_mipmap(st);
 237 #if FEATURE_EXT_framebuffer_blit
 238    st_destroy_blit(st);
 239 #endif
 240    st_destroy_clear(st);
 241 #if FEATURE_drawpix
 242    st_destroy_bitmap(st);
 243    st_destroy_drawpix(st);
 244 #endif
 245 #if FEATURE_OES_draw_texture
 246    st_destroy_drawtex(st);
 247 #endif
 248
 249    for (i = 0; i < Elements(st->state.sampler_views); i++) {
 250       pipe_sampler_view_reference(&st->state.sampler_views[i], NULL);
 251    }
 252
 253    for (i = 0; i < Elements(st->state.constants); i++) {
 254       if (st->state.constants[i]) {
 255          pipe_resource_reference(&st->state.constants[i], NULL);
 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    free( st );
 265 }
 266
 267
 268 void st_destroy_context( struct st_context *st )
 269 {
 270    struct pipe_context *pipe = st->pipe;
 271    struct cso_context *cso = st->cso_context;
 272    GLcontext *ctx = st->ctx;
 273    GLuint i;
 274
 275    /* need to unbind and destroy CSO objects before anything else */
 276    cso_release_all(st->cso_context);
 277
 278    st_reference_fragprog(st, &st->fp, NULL);
 279    st_reference_vertprog(st, &st->vp, NULL);
 280
 281    /* release framebuffer surfaces */
 282    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
 283       pipe_surface_reference(&st->state.framebuffer.cbufs[i], NULL);
 284    }
 285    pipe_surface_reference(&st->state.framebuffer.zsbuf, NULL);
 286
 287    _mesa_delete_program_cache(st->ctx, st->pixel_xfer.cache);
 288
 289    _vbo_DestroyContext(st->ctx);
 290
 291    _mesa_free_context_data(ctx);
 292
 293    st_destroy_context_priv(st);
 294
 295    cso_destroy_context(cso);
 296
 297    pipe->destroy( pipe );
 298
 299    free(ctx);
 300 }
 301
 302
 303 void st_init_driver_functions(struct dd_function_table *functions)
 304 {
 305    _mesa_init_glsl_driver_functions(functions);
 306
 307 #if FEATURE_accum
 308    st_init_accum_functions(functions);
 309 #endif
 310 #if FEATURE_EXT_framebuffer_blit
 311    st_init_blit_functions(functions);
 312 #endif
 313    st_init_bufferobject_functions(functions);
 314    st_init_clear_functions(functions);
 315 #if FEATURE_drawpix
 316    st_init_bitmap_functions(functions);
 317    st_init_drawpixels_functions(functions);
 318    st_init_rasterpos_functions(functions);
 319 #endif
 320
 321 #if FEATURE_OES_draw_texture
 322    st_init_drawtex_functions(functions);
 323 #endif
 324
 325    st_init_eglimage_functions(functions);
 326
 327    st_init_fbo_functions(functions);
 328 #if FEATURE_feedback
 329    st_init_feedback_functions(functions);
 330 #endif
 331    st_init_program_functions(functions);
 332 #if FEATURE_queryobj
 333    st_init_query_functions(functions);
 334 #endif
 335    st_init_cond_render_functions(functions);
 336    st_init_readpixels_functions(functions);
 337    st_init_texture_functions(functions);
 338    st_init_flush_functions(functions);
 339    st_init_string_functions(functions);
 340
 341 #if FEATURE_EXT_transform_feedback
 342    st_init_xformfb_functions(functions);
 343 #endif
 344
 345    functions->UpdateState = st_invalidate_state;
 346 }