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 "vbo/vbo.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 #include "st_cb_drawpixels.h"
  42 #include "st_cb_rasterpos.h"
  43 #include "st_cb_drawtex.h"
  44 #include "st_cb_eglimage.h"
  45 #include "st_cb_fbo.h"
  46 #include "st_cb_feedback.h"
  47 #include "st_cb_program.h"
  48 #include "st_cb_queryobj.h"
  49 #include "st_cb_readpixels.h"
  50 #include "st_cb_texture.h"
  51 #include "st_cb_xformfb.h"
  52 #include "st_cb_flush.h"
  53 #include "st_cb_strings.h"
  54 #include "st_cb_viewport.h"
  55 #include "st_atom.h"
  56 #include "st_draw.h"
  57 #include "st_extensions.h"
  58 #include "st_gen_mipmap.h"
  59 #include "st_program.h"
  60 #include "pipe/p_context.h"
  61 #include "util/u_inlines.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 /**
  83  * Check for multisample env var override.
  84  */
  85 int
  86 st_get_msaa(void)
  87 {
  88    const char *msaa = _mesa_getenv("__GL_FSAA_MODE");
  89    if (msaa)
  90       return atoi(msaa);
  91    return 0;
  92 }
  93
  94
  95 static struct st_context *
  96 st_create_context_priv( GLcontext *ctx, struct pipe_context *pipe )
  97 {
  98    uint i;
  99    struct st_context *st = ST_CALLOC_STRUCT( st_context );
 100
 101    ctx->st = st;
 102
 103    st->ctx = ctx;
 104    st->pipe = pipe;
 105
 106    /* XXX: this is one-off, per-screen init: */
 107    st_debug_init();
 108
 109    /* state tracker needs the VBO module */
 110    _vbo_CreateContext(ctx);
 111
 112    st->dirty.mesa = ~0;
 113    st->dirty.st = ~0;
 114
 115    st->cso_context = cso_create_context(pipe);
 116
 117    st_init_atoms( st );
 118    st_init_bitmap(st);
 119    st_init_clear(st);
 120    st_init_draw( st );
 121    st_init_generate_mipmap(st);
 122    st_init_blit(st);
 123
 124    for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
 125       st->state.sampler_list[i] = &st->state.samplers[i];
 126
 127    for (i = 0; i < 3; i++) {
 128       memset(&st->velems_util_draw[i], 0, sizeof(struct pipe_vertex_element));
 129       st->velems_util_draw[i].src_offset = i * 4 * sizeof(float);
 130       st->velems_util_draw[i].instance_divisor = 0;
 131       st->velems_util_draw[i].vertex_buffer_index = 0;
 132       st->velems_util_draw[i].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
 133    }
 134
 135    /* we want all vertex data to be placed in buffer objects */
 136    vbo_use_buffer_objects(ctx);
 137
 138    /* Need these flags:
 139     */
 140    st->ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
 141
 142    st->ctx->VertexProgram._MaintainTnlProgram = GL_TRUE;
 143
 144    st->pixel_xfer.cache = _mesa_new_program_cache();
 145
 146    st->force_msaa = st_get_msaa();
 147
 148    /* GL limits and extensions */
 149    st_init_limits(st);
 150    st_init_extensions(st);
 151
 152    return st;
 153 }
 154
 155
 156 struct st_context *st_create_context(struct pipe_context *pipe,
 157                                      const __GLcontextModes *visual,
 158                                      struct st_context *share)
 159 {
 160    GLcontext *ctx;
 161    GLcontext *shareCtx = share ? share->ctx : NULL;
 162    struct dd_function_table funcs;
 163
 164    memset(&funcs, 0, sizeof(funcs));
 165    st_init_driver_functions(&funcs);
 166
 167 #if FEATURE_GL
 168    ctx = _mesa_create_context_for_api(API_OPENGL,
 169                                       visual, shareCtx, &funcs, NULL);
 170 #elif FEATURE_ES1
 171    ctx = _mesa_create_context_for_api(API_OPENGLES,
 172                                       visual, shareCtx, &funcs, NULL);
 173 #elif FEATURE_ES2
 174    ctx = _mesa_create_context_for_api(API_OPENGLES2,
 175                                       visual, shareCtx, &funcs, NULL);
 176 #endif
 177
 178    /* XXX: need a capability bit in gallium to query if the pipe
 179     * driver prefers DP4 or MUL/MAD for vertex transformation.
 180     */
 181    if (debug_get_bool_option("MESA_MVP_DP4", FALSE))
 182       _mesa_set_mvp_with_dp4( ctx, GL_TRUE );
 183
 184    return st_create_context_priv(ctx, pipe);
 185 }
 186
 187
 188 static void st_destroy_context_priv( struct st_context *st )
 189 {
 190    uint i;
 191
 192    st_destroy_atoms( st );
 193    st_destroy_draw( st );
 194    st_destroy_generate_mipmap(st);
 195    st_destroy_blit(st);
 196    st_destroy_clear(st);
 197    st_destroy_bitmap(st);
 198    st_destroy_drawpix(st);
 199    st_destroy_drawtex(st);
 200
 201    for (i = 0; i < Elements(st->state.sampler_views); i++) {
 202       pipe_sampler_view_reference(&st->state.sampler_views[i], NULL);
 203    }
 204
 205    for (i = 0; i < Elements(st->state.constants); i++) {
 206       if (st->state.constants[i]) {
 207          pipe_resource_reference(&st->state.constants[i], NULL);
 208       }
 209    }
 210
 211    if (st->default_texture) {
 212       st->ctx->Driver.DeleteTexture(st->ctx, st->default_texture);
 213       st->default_texture = NULL;
 214    }
 215
 216    free( st );
 217 }
 218
 219
 220 void st_destroy_context( struct st_context *st )
 221 {
 222    struct pipe_context *pipe = st->pipe;
 223    struct cso_context *cso = st->cso_context;
 224    GLcontext *ctx = st->ctx;
 225    GLuint i;
 226
 227    /* need to unbind and destroy CSO objects before anything else */
 228    cso_release_all(st->cso_context);
 229
 230    st_reference_fragprog(st, &st->fp, NULL);
 231    st_reference_vertprog(st, &st->vp, NULL);
 232
 233    /* release framebuffer surfaces */
 234    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
 235       pipe_surface_reference(&st->state.framebuffer.cbufs[i], NULL);
 236    }
 237    pipe_surface_reference(&st->state.framebuffer.zsbuf, NULL);
 238
 239    _mesa_delete_program_cache(st->ctx, st->pixel_xfer.cache);
 240
 241    _vbo_DestroyContext(st->ctx);
 242
 243    _mesa_free_context_data(ctx);
 244
 245    st_destroy_context_priv(st);
 246
 247    cso_destroy_context(cso);
 248
 249    pipe->destroy( pipe );
 250
 251    free(ctx);
 252 }
 253
 254
 255 void st_init_driver_functions(struct dd_function_table *functions)
 256 {
 257    _mesa_init_shader_object_functions(functions);
 258
 259    st_init_accum_functions(functions);
 260    st_init_blit_functions(functions);
 261    st_init_bufferobject_functions(functions);
 262    st_init_clear_functions(functions);
 263    st_init_bitmap_functions(functions);
 264    st_init_drawpixels_functions(functions);
 265    st_init_rasterpos_functions(functions);
 266
 267    st_init_drawtex_functions(functions);
 268
 269    st_init_eglimage_functions(functions);
 270
 271    st_init_fbo_functions(functions);
 272    st_init_feedback_functions(functions);
 273    st_init_program_functions(functions);
 274    st_init_query_functions(functions);
 275    st_init_cond_render_functions(functions);
 276    st_init_readpixels_functions(functions);
 277    st_init_texture_functions(functions);
 278    st_init_flush_functions(functions);
 279    st_init_string_functions(functions);
 280    st_init_viewport_functions(functions);
 281
 282    st_init_xformfb_functions(functions);
 283
 284    functions->UpdateState = st_invalidate_state;
 285 }