src/gallium/drivers/llvmpipe/lp_context.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  * Copyright 2008 VMware, Inc.  All rights reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the
   9  * "Software"), to deal in the Software without restriction, including
  10  * without limitation the rights to use, copy, modify, merge, publish,
  11  * distribute, sub license, and/or sell copies of the Software, and to
  12  * permit persons to whom the Software is furnished to do so, subject to
  13  * the following conditions:
  14  *
  15  * The above copyright notice and this permission notice (including the
  16  * next paragraph) shall be included in all copies or substantial portions
  17  * of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  20  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  21  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  22  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  23  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  24  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  25  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  26  *
  27  **************************************************************************/
  28
  29 /* Author:
  30  *    Keith Whitwell <keith@tungstengraphics.com>
  31  */
  32
  33 #include "draw/draw_context.h"
  34 #include "draw/draw_vbuf.h"
  35 #include "pipe/p_defines.h"
  36 #include "util/u_inlines.h"
  37 #include "util/u_math.h"
  38 #include "util/u_memory.h"
  39 #include "util/u_simple_list.h"
  40 #include "lp_clear.h"
  41 #include "lp_context.h"
  42 #include "lp_flush.h"
  43 #include "lp_perf.h"
  44 #include "lp_state.h"
  45 #include "lp_surface.h"
  46 #include "lp_query.h"
  47 #include "lp_setup.h"
  48
  49
  50 DEBUG_GET_ONCE_BOOL_OPTION(lp_no_rast, "LP_NO_RAST", FALSE)
  51
  52
  53 /** shared by all contexts */
  54 unsigned llvmpipe_variant_count;
  55
  56
  57 /**
  58  * This function is called by the gallivm "garbage collector" when
  59  * the LLVM global data structures are freed.  We must free all LLVM-related
  60  * data.  Specifically, all JIT'd shader variants.
  61  */
  62 static void
  63 garbage_collect_callback(void *cb_data)
  64 {
  65    struct llvmpipe_context *lp = (struct llvmpipe_context *) cb_data;
  66    struct lp_fs_variant_list_item *li;
  67
  68    /* Free all the context's shader variants */
  69    li = first_elem(&lp->fs_variants_list);
  70    while (!at_end(&lp->fs_variants_list, li)) {
  71       struct lp_fs_variant_list_item *next = next_elem(li);
  72       llvmpipe_remove_shader_variant(lp, li->base);
  73       li = next;
  74    }
  75
  76    /* Free all the context's primitive setup variants */
  77    lp_delete_setup_variants(lp);
  78
  79    /* release references to setup variants, shaders */
  80    lp_setup_set_setup_variant(lp->setup, NULL);
  81    lp_setup_set_fs_variant(lp->setup, NULL);
  82    lp_setup_reset(lp->setup);
  83
  84    /* This type will be recreated upon demand */
  85    lp->jit_context_ptr_type = NULL;
  86
  87    /* mark all state as dirty to ensure new shaders are jit'd, etc. */
  88    lp->dirty = ~0;
  89 }
  90
  91
  92
  93 static void llvmpipe_destroy( struct pipe_context *pipe )
  94 {
  95    struct llvmpipe_context *llvmpipe = llvmpipe_context( pipe );
  96    uint i, j;
  97
  98    lp_print_counters();
  99
 100    gallivm_remove_garbage_collector_callback(garbage_collect_callback,
 101                                              llvmpipe);
 102
 103    /* This will also destroy llvmpipe->setup:
 104     */
 105    if (llvmpipe->draw)
 106       draw_destroy( llvmpipe->draw );
 107
 108    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
 109       pipe_surface_reference(&llvmpipe->framebuffer.cbufs[i], NULL);
 110    }
 111
 112    pipe_surface_reference(&llvmpipe->framebuffer.zsbuf, NULL);
 113
 114    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 115       pipe_sampler_view_reference(&llvmpipe->fragment_sampler_views[i], NULL);
 116    }
 117
 118    for (i = 0; i < PIPE_MAX_VERTEX_SAMPLERS; i++) {
 119       pipe_sampler_view_reference(&llvmpipe->vertex_sampler_views[i], NULL);
 120    }
 121
 122    for (i = 0; i < Elements(llvmpipe->constants); i++) {
 123       for (j = 0; j < Elements(llvmpipe->constants[i]); j++) {
 124          pipe_resource_reference(&llvmpipe->constants[i][j], NULL);
 125       }
 126    }
 127
 128    for (i = 0; i < llvmpipe->num_vertex_buffers; i++) {
 129       pipe_resource_reference(&llvmpipe->vertex_buffer[i].buffer, NULL);
 130    }
 131
 132    gallivm_destroy(llvmpipe->gallivm);
 133
 134    align_free( llvmpipe );
 135 }
 136
 137 static void
 138 do_flush( struct pipe_context *pipe,
 139           unsigned flags,
 140           struct pipe_fence_handle **fence)
 141 {
 142    llvmpipe_flush(pipe, flags, fence, __FUNCTION__);
 143 }
 144
 145
 146 struct pipe_context *
 147 llvmpipe_create_context( struct pipe_screen *screen, void *priv )
 148 {
 149    struct llvmpipe_context *llvmpipe;
 150
 151    llvmpipe = align_malloc(sizeof(struct llvmpipe_context), 16);
 152    if (!llvmpipe)
 153       return NULL;
 154
 155    util_init_math();
 156
 157    memset(llvmpipe, 0, sizeof *llvmpipe);
 158
 159    make_empty_list(&llvmpipe->fs_variants_list);
 160
 161    make_empty_list(&llvmpipe->setup_variants_list);
 162
 163
 164    llvmpipe->pipe.winsys = screen->winsys;
 165    llvmpipe->pipe.screen = screen;
 166    llvmpipe->pipe.priv = priv;
 167
 168    /* Init the pipe context methods */
 169    llvmpipe->pipe.destroy = llvmpipe_destroy;
 170    llvmpipe->pipe.set_framebuffer_state = llvmpipe_set_framebuffer_state;
 171    llvmpipe->pipe.clear = llvmpipe_clear;
 172    llvmpipe->pipe.flush = do_flush;
 173
 174    llvmpipe_init_blend_funcs(llvmpipe);
 175    llvmpipe_init_clip_funcs(llvmpipe);
 176    llvmpipe_init_draw_funcs(llvmpipe);
 177    llvmpipe_init_sampler_funcs(llvmpipe);
 178    llvmpipe_init_query_funcs( llvmpipe );
 179    llvmpipe_init_vertex_funcs(llvmpipe);
 180    llvmpipe_init_so_funcs(llvmpipe);
 181    llvmpipe_init_fs_funcs(llvmpipe);
 182    llvmpipe_init_vs_funcs(llvmpipe);
 183    llvmpipe_init_gs_funcs(llvmpipe);
 184    llvmpipe_init_rasterizer_funcs(llvmpipe);
 185    llvmpipe_init_context_resource_funcs( &llvmpipe->pipe );
 186    llvmpipe_init_surface_functions(llvmpipe);
 187
 188    llvmpipe->gallivm = gallivm_create();
 189
 190    /*
 191     * Create drawing context and plug our rendering stage into it.
 192     */
 193    llvmpipe->draw = draw_create_gallivm(&llvmpipe->pipe, llvmpipe->gallivm);
 194    if (!llvmpipe->draw)
 195       goto fail;
 196
 197    /* FIXME: devise alternative to draw_texture_samplers */
 198
 199    if (debug_get_option_lp_no_rast())
 200       llvmpipe->no_rast = TRUE;
 201
 202    llvmpipe->setup = lp_setup_create( &llvmpipe->pipe,
 203                                       llvmpipe->draw );
 204    if (!llvmpipe->setup)
 205       goto fail;
 206
 207    /* plug in AA line/point stages */
 208    draw_install_aaline_stage(llvmpipe->draw, &llvmpipe->pipe);
 209    draw_install_aapoint_stage(llvmpipe->draw, &llvmpipe->pipe);
 210    draw_install_pstipple_stage(llvmpipe->draw, &llvmpipe->pipe);
 211
 212    /* convert points and lines into triangles:
 213     * (otherwise, draw points and lines natively)
 214     */
 215    draw_wide_point_sprites(llvmpipe->draw, FALSE);
 216    draw_enable_point_sprites(llvmpipe->draw, FALSE);
 217    draw_wide_point_threshold(llvmpipe->draw, 10000.0);
 218    draw_wide_line_threshold(llvmpipe->draw, 10000.0);
 219
 220 #if USE_DRAW_STAGE_PSTIPPLE
 221    /* Do polygon stipple w/ texture map + frag prog? */
 222    draw_install_pstipple_stage(llvmpipe->draw, &llvmpipe->pipe);
 223 #endif
 224
 225    lp_reset_counters();
 226
 227    gallivm_register_garbage_collector_callback(garbage_collect_callback,
 228                                                llvmpipe);
 229
 230    return &llvmpipe->pipe;
 231
 232  fail:
 233    llvmpipe_destroy(&llvmpipe->pipe);
 234    return NULL;
 235 }
 236