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/accum.h"
  30 #include "main/context.h"
  31 #include "main/samplerobj.h"
  32 #include "main/shaderobj.h"
  33 #include "program/prog_cache.h"
  34 #include "vbo/vbo.h"
  35 #include "glapi/glapi.h"
  36 #include "st_context.h"
  37 #include "st_debug.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    /* Replace _NEW_FRAG_CLAMP with ST_NEW_FRAGMENT_PROGRAM for the fallback. */
  80    if (st->clamp_frag_color_in_shader && (new_state & _NEW_FRAG_CLAMP)) {
  81       new_state &= ~_NEW_FRAG_CLAMP;
  82       st->dirty.st |= ST_NEW_FRAGMENT_PROGRAM;
  83    }
  84
  85    /* Update the vertex shader if ctx->Light._ClampVertexColor was changed. */
  86    if (st->clamp_vert_color_in_shader && (new_state & _NEW_LIGHT)) {
  87       st->dirty.st |= ST_NEW_VERTEX_PROGRAM;
  88    }
  89
  90    st->dirty.mesa |= new_state;
  91    st->dirty.st |= ST_NEW_MESA;
  92
  93    /* This is the only core Mesa module we depend upon.
  94     * No longer use swrast, swsetup, tnl.
  95     */
  96    _vbo_InvalidateState(ctx, new_state);
  97 }
  98
  99
 100 /**
 101  * Check for multisample env var override.
 102  */
 103 int
 104 st_get_msaa(void)
 105 {
 106    const char *msaa = _mesa_getenv("__GL_FSAA_MODE");
 107    if (msaa)
 108       return atoi(msaa);
 109    return 0;
 110 }
 111
 112
 113 static struct st_context *
 114 st_create_context_priv( struct gl_context *ctx, struct pipe_context *pipe )
 115 {
 116    uint i;
 117    struct st_context *st = ST_CALLOC_STRUCT( st_context );
 118
 119    ctx->st = st;
 120
 121    st->ctx = ctx;
 122    st->pipe = pipe;
 123
 124    /* XXX: this is one-off, per-screen init: */
 125    st_debug_init();
 126
 127    /* state tracker needs the VBO module */
 128    _vbo_CreateContext(ctx);
 129
 130    st->dirty.mesa = ~0;
 131    st->dirty.st = ~0;
 132
 133    st->cso_context = cso_create_context(pipe);
 134
 135    st_init_atoms( st );
 136    st_init_bitmap(st);
 137    st_init_clear(st);
 138    st_init_draw( st );
 139    st_init_generate_mipmap(st);
 140    st_init_blit(st);
 141
 142    if(pipe->screen->get_param(pipe->screen, PIPE_CAP_NPOT_TEXTURES))
 143       st->internal_target = PIPE_TEXTURE_2D;
 144    else
 145       st->internal_target = PIPE_TEXTURE_RECT;
 146
 147    for (i = 0; i < 3; i++) {
 148       memset(&st->velems_util_draw[i], 0, sizeof(struct pipe_vertex_element));
 149       st->velems_util_draw[i].src_offset = i * 4 * sizeof(float);
 150       st->velems_util_draw[i].instance_divisor = 0;
 151       st->velems_util_draw[i].vertex_buffer_index = 0;
 152       st->velems_util_draw[i].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
 153    }
 154
 155    /* we want all vertex data to be placed in buffer objects */
 156    vbo_use_buffer_objects(ctx);
 157
 158
 159    /* make sure that no VBOs are left mapped when we're drawing. */
 160    vbo_always_unmap_buffers(ctx);
 161
 162    /* Need these flags:
 163     */
 164    st->ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
 165
 166    st->ctx->VertexProgram._MaintainTnlProgram = GL_TRUE;
 167
 168    st->pixel_xfer.cache = _mesa_new_program_cache();
 169
 170    st->force_msaa = st_get_msaa();
 171
 172    /* GL limits and extensions */
 173    st_init_limits(st);
 174    st_init_extensions(st);
 175
 176    return st;
 177 }
 178
 179
 180 struct st_context *st_create_context(gl_api api, struct pipe_context *pipe,
 181                                      const struct gl_config *visual,
 182                                      struct st_context *share)
 183 {
 184    struct gl_context *ctx;
 185    struct gl_context *shareCtx = share ? share->ctx : NULL;
 186    struct dd_function_table funcs;
 187
 188    /* Sanity checks */
 189    assert(MESA_SHADER_VERTEX == PIPE_SHADER_VERTEX);
 190    assert(MESA_SHADER_FRAGMENT == PIPE_SHADER_FRAGMENT);
 191    assert(MESA_SHADER_GEOMETRY == PIPE_SHADER_GEOMETRY);
 192
 193    memset(&funcs, 0, sizeof(funcs));
 194    st_init_driver_functions(&funcs);
 195
 196    ctx = _mesa_create_context(api, visual, shareCtx, &funcs, NULL);
 197    if (!ctx) {
 198       return NULL;
 199    }
 200
 201    /* XXX: need a capability bit in gallium to query if the pipe
 202     * driver prefers DP4 or MUL/MAD for vertex transformation.
 203     */
 204    if (debug_get_option_mesa_mvp_dp4())
 205       _mesa_set_mvp_with_dp4( ctx, GL_TRUE );
 206
 207    return st_create_context_priv(ctx, pipe);
 208 }
 209
 210
 211 static void st_destroy_context_priv( struct st_context *st )
 212 {
 213    uint i;
 214
 215    st_destroy_atoms( st );
 216    st_destroy_draw( st );
 217    st_destroy_generate_mipmap(st);
 218    st_destroy_blit(st);
 219    st_destroy_clear(st);
 220    st_destroy_bitmap(st);
 221    st_destroy_drawpix(st);
 222    st_destroy_drawtex(st);
 223
 224    /* Unreference any user vertex buffers. */
 225    for (i = 0; i < st->num_user_attribs; i++) {
 226       pipe_resource_reference(&st->user_attrib[i].buffer, NULL);
 227    }
 228
 229    for (i = 0; i < Elements(st->state.sampler_views); i++) {
 230       pipe_sampler_view_reference(&st->state.sampler_views[i], NULL);
 231    }
 232
 233    if (st->default_texture) {
 234       st->ctx->Driver.DeleteTexture(st->ctx, st->default_texture);
 235       st->default_texture = NULL;
 236    }
 237
 238    free( st );
 239 }
 240
 241
 242 void st_destroy_context( struct st_context *st )
 243 {
 244    struct pipe_context *pipe = st->pipe;
 245    struct cso_context *cso = st->cso_context;
 246    struct gl_context *ctx = st->ctx;
 247    GLuint i;
 248
 249    /* need to unbind and destroy CSO objects before anything else */
 250    cso_release_all(st->cso_context);
 251
 252    st_reference_fragprog(st, &st->fp, NULL);
 253    st_reference_vertprog(st, &st->vp, NULL);
 254
 255    /* release framebuffer surfaces */
 256    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
 257       pipe_surface_reference(&st->state.framebuffer.cbufs[i], NULL);
 258    }
 259    pipe_surface_reference(&st->state.framebuffer.zsbuf, NULL);
 260
 261    pipe->set_index_buffer(pipe, NULL);
 262
 263    for (i = 0; i < PIPE_SHADER_TYPES; i++) {
 264       pipe->set_constant_buffer(pipe, i, 0, NULL);
 265    }
 266
 267    _mesa_delete_program_cache(st->ctx, st->pixel_xfer.cache);
 268
 269    _vbo_DestroyContext(st->ctx);
 270
 271    st_destroy_program_variants(st);
 272
 273    _mesa_free_context_data(ctx);
 274
 275    st_destroy_context_priv(st);
 276
 277    cso_destroy_context(cso);
 278
 279    pipe->destroy( pipe );
 280
 281    free(ctx);
 282 }
 283
 284
 285 void st_init_driver_functions(struct dd_function_table *functions)
 286 {
 287    _mesa_init_shader_object_functions(functions);
 288    _mesa_init_sampler_object_functions(functions);
 289
 290    functions->Accum = _mesa_accum;
 291
 292    st_init_blit_functions(functions);
 293    st_init_bufferobject_functions(functions);
 294    st_init_clear_functions(functions);
 295    st_init_bitmap_functions(functions);
 296    st_init_drawpixels_functions(functions);
 297    st_init_rasterpos_functions(functions);
 298
 299    st_init_drawtex_functions(functions);
 300
 301    st_init_eglimage_functions(functions);
 302
 303    st_init_fbo_functions(functions);
 304    st_init_feedback_functions(functions);
 305    st_init_program_functions(functions);
 306    st_init_query_functions(functions);
 307    st_init_cond_render_functions(functions);
 308    st_init_readpixels_functions(functions);
 309    st_init_texture_functions(functions);
 310    st_init_texture_barrier_functions(functions);
 311    st_init_flush_functions(functions);
 312    st_init_string_functions(functions);
 313    st_init_viewport_functions(functions);
 314
 315    st_init_xformfb_functions(functions);
 316    st_init_syncobj_functions(functions);
 317
 318    functions->UpdateState = st_invalidate_state;
 319 }