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/extensions.h"
  31 #include "main/matrix.h"
  32 #include "main/buffers.h"
  33 #include "vbo/vbo.h"
  34 #include "shader/shader_api.h"
  35 #include "st_public.h"
  36 #include "st_context.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_drawpixels.h"
  43 #include "st_cb_fbo.h"
  44 #include "st_cb_feedback.h"
  45 #include "st_cb_program.h"
  46 #include "st_cb_queryobj.h"
  47 #include "st_cb_rasterpos.h"
  48 #include "st_cb_readpixels.h"
  49 #include "st_cb_texture.h"
  50 #include "st_cb_flush.h"
  51 #include "st_cb_strings.h"
  52 #include "st_atom.h"
  53 #include "st_draw.h"
  54 #include "st_extensions.h"
  55 #include "st_gen_mipmap.h"
  56 #include "st_program.h"
  57 #include "pipe/p_context.h"
  58 #include "pipe/p_winsys.h"
  59 #include "pipe/p_inlines.h"
  60 #include "draw/draw_context.h"
  61 #include "cso_cache/cso_cache.h"
  62 #include "cso_cache/cso_context.h"
  63
  64
  65 /**
  66  * Called via ctx->Driver.UpdateState()
  67  */
  68 void st_invalidate_state(GLcontext * ctx, GLuint new_state)
  69 {
  70    struct st_context *st = st_context(ctx);
  71
  72    st->dirty.mesa |= new_state;
  73    st->dirty.st |= ST_NEW_MESA;
  74
  75    /* This is the only core Mesa module we depend upon.
  76     * No longer use swrast, swsetup, tnl.
  77     */
  78    _vbo_InvalidateState(ctx, new_state);
  79 }
  80
  81
  82 static struct st_context *
  83 st_create_context_priv( GLcontext *ctx, struct pipe_context *pipe )
  84 {
  85    uint i;
  86    struct st_context *st = CALLOC_STRUCT( st_context );
  87
  88    ctx->st = st;
  89
  90    st->ctx = ctx;
  91    st->pipe = pipe;
  92
  93    /* state tracker needs the VBO module */
  94    _vbo_CreateContext(ctx);
  95
  96    st->draw = draw_create(); /* for selection/feedback */
  97
  98    /* Disable draw options that might convert points/lines to tris, etc.
  99     * as that would foul-up feedback/selection mode.
 100     */
 101    draw_wide_line_threshold(st->draw, 1000.0f);
 102    draw_wide_point_threshold(st->draw, 1000.0f);
 103    draw_enable_line_stipple(st->draw, FALSE);
 104    draw_enable_point_sprites(st->draw, FALSE);
 105
 106    st->dirty.mesa = ~0;
 107    st->dirty.st = ~0;
 108
 109    st->cso_context = cso_create_context(pipe);
 110
 111    st_init_atoms( st );
 112    st_init_bitmap(st);
 113    st_init_clear(st);
 114    st_init_draw( st );
 115    st_init_generate_mipmap(st);
 116    st_init_blit(st);
 117
 118    for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
 119       st->state.sampler_list[i] = &st->state.samplers[i];
 120
 121    /* we want all vertex data to be placed in buffer objects */
 122    vbo_use_buffer_objects(ctx);
 123
 124    /* Need these flags:
 125     */
 126    st->ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
 127    st->ctx->FragmentProgram._UseTexEnvProgram = GL_TRUE;
 128
 129    st->ctx->VertexProgram._MaintainTnlProgram = GL_TRUE;
 130
 131    st->pixel_xfer.cache = _mesa_new_program_cache();
 132
 133    /* GL limits and extensions */
 134    st_init_limits(st);
 135    st_init_extensions(st);
 136
 137    return st;
 138 }
 139
 140
 141 struct st_context *st_create_context(struct pipe_context *pipe,
 142                                      const __GLcontextModes *visual,
 143                                      struct st_context *share)
 144 {
 145    GLcontext *ctx;
 146    GLcontext *shareCtx = share ? share->ctx : NULL;
 147    struct dd_function_table funcs;
 148
 149    memset(&funcs, 0, sizeof(funcs));
 150    st_init_driver_functions(&funcs);
 151
 152    ctx = _mesa_create_context(visual, shareCtx, &funcs, NULL);
 153
 154    return st_create_context_priv(ctx, pipe);
 155 }
 156
 157
 158 static void st_destroy_context_priv( struct st_context *st )
 159 {
 160    struct pipe_winsys *ws = st->pipe->winsys;
 161    uint i;
 162
 163    draw_destroy(st->draw);
 164    st_destroy_atoms( st );
 165    st_destroy_draw( st );
 166    st_destroy_generate_mipmap(st);
 167    st_destroy_bitmap(st);
 168    st_destroy_blit(st);
 169    st_destroy_clear(st);
 170
 171    _vbo_DestroyContext(st->ctx);
 172
 173    for (i = 0; i < Elements(st->state.constants); i++) {
 174       if (st->state.constants[i].buffer) {
 175          pipe_buffer_reference(ws, &st->state.constants[i].buffer, NULL);
 176       }
 177    }
 178
 179    free( st );
 180 }
 181
 182
 183 void st_destroy_context( struct st_context *st )
 184 {
 185    struct pipe_context *pipe = st->pipe;
 186    struct cso_context *cso = st->cso_context;
 187    GLcontext *ctx = st->ctx;
 188
 189    /* need to unbind and destroy CSO objects before anything else */
 190    cso_release_all(st->cso_context);
 191
 192    _mesa_delete_program_cache(st->ctx, st->pixel_xfer.cache);
 193
 194    _mesa_free_context_data(ctx);
 195
 196    st_destroy_context_priv(st);
 197
 198    cso_destroy_context(cso);
 199
 200    pipe->destroy( pipe );
 201
 202    free(ctx);
 203 }
 204
 205
 206 void st_make_current(struct st_context *st,
 207                      struct st_framebuffer *draw,
 208                      struct st_framebuffer *read)
 209 {
 210    if (st) {
 211       GLboolean firstTime = st->ctx->FirstTimeCurrent;
 212       _mesa_make_current(st->ctx, &draw->Base, &read->Base);
 213       /* Need to initialize viewport here since draw->Base->Width/Height
 214        * will still be zero at this point.
 215        * This could be improved, but would require rather extensive work
 216        * elsewhere (allocate rb surface storage sooner)
 217        */
 218       if (firstTime) {
 219          GLuint w = draw->InitWidth, h = draw->InitHeight;
 220          _mesa_set_viewport(st->ctx, 0, 0, w, h);
 221          _mesa_set_scissor(st->ctx, 0, 0, w, h);
 222
 223       }
 224    }
 225    else {
 226       _mesa_make_current(NULL, NULL, NULL);
 227    }
 228 }
 229
 230
 231 void st_copy_context_state(struct st_context *dst,
 232                            struct st_context *src,
 233                            uint mask)
 234 {
 235    _mesa_copy_context(dst->ctx, src->ctx, mask);
 236 }
 237
 238
 239 void st_init_driver_functions(struct dd_function_table *functions)
 240 {
 241    _mesa_init_glsl_driver_functions(functions);
 242
 243    st_init_accum_functions(functions);
 244    st_init_bitmap_functions(functions);
 245    st_init_blit_functions(functions);
 246    st_init_bufferobject_functions(functions);
 247    st_init_clear_functions(functions);
 248    st_init_drawpixels_functions(functions);
 249    st_init_fbo_functions(functions);
 250    st_init_feedback_functions(functions);
 251    st_init_program_functions(functions);
 252    st_init_query_functions(functions);
 253    st_init_rasterpos_functions(functions);
 254    st_init_readpixels_functions(functions);
 255    st_init_texture_functions(functions);
 256    st_init_flush_functions(functions);
 257    st_init_string_functions(functions);
 258
 259    functions->UpdateState = st_invalidate_state;
 260 }