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 "util/u_upload_mgr.h"
  67 #include "cso_cache/cso_context.h"
  68 #include "util/u_vbuf.h"
  69
  70
  71 DEBUG_GET_ONCE_BOOL_OPTION(mesa_mvp_dp4, "MESA_MVP_DP4", FALSE)
  72
  73
  74 /**
  75  * Called via ctx->Driver.UpdateState()
  76  */
  77 void st_invalidate_state(struct gl_context * ctx, GLuint new_state)
  78 {
  79    struct st_context *st = st_context(ctx);
  80
  81    /* Replace _NEW_FRAG_CLAMP with ST_NEW_FRAGMENT_PROGRAM for the fallback. */
  82    if (st->clamp_frag_color_in_shader && (new_state & _NEW_FRAG_CLAMP)) {
  83       new_state &= ~_NEW_FRAG_CLAMP;
  84       st->dirty.st |= ST_NEW_FRAGMENT_PROGRAM;
  85    }
  86
  87    /* Update the vertex shader if ctx->Light._ClampVertexColor was changed. */
  88    if (st->clamp_vert_color_in_shader && (new_state & _NEW_LIGHT)) {
  89       st->dirty.st |= ST_NEW_VERTEX_PROGRAM;
  90    }
  91
  92    st->dirty.mesa |= new_state;
  93    st->dirty.st |= ST_NEW_MESA;
  94
  95    /* This is the only core Mesa module we depend upon.
  96     * No longer use swrast, swsetup, tnl.
  97     */
  98    _vbo_InvalidateState(ctx, new_state);
  99 }
 100
 101
 102 /**
 103  * Check for multisample env var override.
 104  */
 105 int
 106 st_get_msaa(void)
 107 {
 108    const char *msaa = _mesa_getenv("__GL_FSAA_MODE");
 109    if (msaa)
 110       return atoi(msaa);
 111    return 0;
 112 }
 113
 114
 115 static void st_init_vbuf(struct st_context *st)
 116 {
 117    struct u_vbuf_caps caps;
 118
 119    u_vbuf_get_caps(st->pipe->screen, &caps);
 120
 121    /* Create u_vbuf if there is anything unsupported. */
 122    if (!caps.fetch_dword_unaligned ||
 123        !caps.format_fixed32 ||
 124        !caps.format_float16 ||
 125        !caps.format_float64 ||
 126        !caps.format_norm32 ||
 127        !caps.format_scaled32 ||
 128        !caps.user_vertex_buffers) {
 129       /* XXX user vertex buffers are always uploaded regardless of the CAP. */
 130       st->vbuf = u_vbuf_create(st->pipe, &caps);
 131       cso_install_vbuf(st->cso_context, st->vbuf);
 132    }
 133 }
 134
 135
 136 static struct st_context *
 137 st_create_context_priv( struct gl_context *ctx, struct pipe_context *pipe )
 138 {
 139    uint i;
 140    struct st_context *st = ST_CALLOC_STRUCT( st_context );
 141
 142    ctx->st = st;
 143
 144    st->ctx = ctx;
 145    st->pipe = pipe;
 146
 147    /* XXX: this is one-off, per-screen init: */
 148    st_debug_init();
 149
 150    /* state tracker needs the VBO module */
 151    _vbo_CreateContext(ctx);
 152
 153    st->dirty.mesa = ~0;
 154    st->dirty.st = ~0;
 155
 156    st->uploader = u_upload_create(st->pipe, 65536, 4, PIPE_BIND_VERTEX_BUFFER);
 157    st->cso_context = cso_create_context(pipe);
 158
 159    st_init_vbuf(st);
 160    st_init_atoms( st );
 161    st_init_bitmap(st);
 162    st_init_clear(st);
 163    st_init_draw( st );
 164    st_init_generate_mipmap(st);
 165    st_init_blit(st);
 166
 167    if(pipe->screen->get_param(pipe->screen, PIPE_CAP_NPOT_TEXTURES))
 168       st->internal_target = PIPE_TEXTURE_2D;
 169    else
 170       st->internal_target = PIPE_TEXTURE_RECT;
 171
 172    for (i = 0; i < 3; i++) {
 173       memset(&st->velems_util_draw[i], 0, sizeof(struct pipe_vertex_element));
 174       st->velems_util_draw[i].src_offset = i * 4 * sizeof(float);
 175       st->velems_util_draw[i].instance_divisor = 0;
 176       st->velems_util_draw[i].vertex_buffer_index = 0;
 177       st->velems_util_draw[i].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
 178    }
 179
 180    /* we want all vertex data to be placed in buffer objects */
 181    vbo_use_buffer_objects(ctx);
 182
 183
 184    /* make sure that no VBOs are left mapped when we're drawing. */
 185    vbo_always_unmap_buffers(ctx);
 186
 187    /* Need these flags:
 188     */
 189    st->ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
 190
 191    st->ctx->VertexProgram._MaintainTnlProgram = GL_TRUE;
 192
 193    st->pixel_xfer.cache = _mesa_new_program_cache();
 194
 195    st->force_msaa = st_get_msaa();
 196
 197    /* GL limits and extensions */
 198    st_init_limits(st);
 199    st_init_extensions(st);
 200
 201    return st;
 202 }
 203
 204
 205 struct st_context *st_create_context(gl_api api, struct pipe_context *pipe,
 206                                      const struct gl_config *visual,
 207                                      struct st_context *share)
 208 {
 209    struct gl_context *ctx;
 210    struct gl_context *shareCtx = share ? share->ctx : NULL;
 211    struct dd_function_table funcs;
 212
 213    /* Sanity checks */
 214    assert(MESA_SHADER_VERTEX == PIPE_SHADER_VERTEX);
 215    assert(MESA_SHADER_FRAGMENT == PIPE_SHADER_FRAGMENT);
 216    assert(MESA_SHADER_GEOMETRY == PIPE_SHADER_GEOMETRY);
 217
 218    memset(&funcs, 0, sizeof(funcs));
 219    st_init_driver_functions(&funcs);
 220
 221    ctx = _mesa_create_context(api, visual, shareCtx, &funcs, NULL);
 222    if (!ctx) {
 223       return NULL;
 224    }
 225
 226    /* XXX: need a capability bit in gallium to query if the pipe
 227     * driver prefers DP4 or MUL/MAD for vertex transformation.
 228     */
 229    if (debug_get_option_mesa_mvp_dp4())
 230       _mesa_set_mvp_with_dp4( ctx, GL_TRUE );
 231
 232    return st_create_context_priv(ctx, pipe);
 233 }
 234
 235
 236 static void st_destroy_context_priv( struct st_context *st )
 237 {
 238    uint i;
 239
 240    st_destroy_atoms( st );
 241    st_destroy_draw( st );
 242    st_destroy_generate_mipmap(st);
 243    st_destroy_blit(st);
 244    st_destroy_clear(st);
 245    st_destroy_bitmap(st);
 246    st_destroy_drawpix(st);
 247    st_destroy_drawtex(st);
 248
 249    /* Unreference any user vertex buffers. */
 250    for (i = 0; i < st->num_user_attribs; i++) {
 251       pipe_resource_reference(&st->user_attrib[i].buffer, NULL);
 252    }
 253
 254    for (i = 0; i < Elements(st->state.sampler_views); i++) {
 255       pipe_sampler_view_reference(&st->state.sampler_views[i], NULL);
 256    }
 257
 258    if (st->default_texture) {
 259       st->ctx->Driver.DeleteTexture(st->ctx, st->default_texture);
 260       st->default_texture = NULL;
 261    }
 262
 263    u_upload_destroy(st->uploader);
 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    struct gl_context *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    pipe->set_index_buffer(pipe, NULL);
 288
 289    for (i = 0; i < PIPE_SHADER_TYPES; i++) {
 290       pipe->set_constant_buffer(pipe, i, 0, NULL);
 291    }
 292
 293    _mesa_delete_program_cache(st->ctx, st->pixel_xfer.cache);
 294
 295    _vbo_DestroyContext(st->ctx);
 296
 297    st_destroy_program_variants(st);
 298
 299    _mesa_free_context_data(ctx);
 300
 301    st_destroy_context_priv(st);
 302
 303    if (st->vbuf)
 304       u_vbuf_destroy(st->vbuf);
 305
 306    cso_destroy_context(cso);
 307
 308    pipe->destroy( pipe );
 309
 310    free(ctx);
 311 }
 312
 313
 314 void st_init_driver_functions(struct dd_function_table *functions)
 315 {
 316    _mesa_init_shader_object_functions(functions);
 317    _mesa_init_sampler_object_functions(functions);
 318
 319    functions->Accum = _mesa_accum;
 320
 321    st_init_blit_functions(functions);
 322    st_init_bufferobject_functions(functions);
 323    st_init_clear_functions(functions);
 324    st_init_bitmap_functions(functions);
 325    st_init_drawpixels_functions(functions);
 326    st_init_rasterpos_functions(functions);
 327
 328    st_init_drawtex_functions(functions);
 329
 330    st_init_eglimage_functions(functions);
 331
 332    st_init_fbo_functions(functions);
 333    st_init_feedback_functions(functions);
 334    st_init_program_functions(functions);
 335    st_init_query_functions(functions);
 336    st_init_cond_render_functions(functions);
 337    st_init_readpixels_functions(functions);
 338    st_init_texture_functions(functions);
 339    st_init_texture_barrier_functions(functions);
 340    st_init_flush_functions(functions);
 341    st_init_string_functions(functions);
 342    st_init_viewport_functions(functions);
 343
 344    st_init_xformfb_functions(functions);
 345    st_init_syncobj_functions(functions);
 346
 347    functions->UpdateState = st_invalidate_state;
 348 }