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 "lp_clear.h"
  40 #include "lp_context.h"
  41 #include "lp_flush.h"
  42 #include "lp_prim_vbuf.h"
  43 #include "lp_state.h"
  44 #include "lp_surface.h"
  45 #include "lp_tile_cache.h"
  46 #include "lp_tex_cache.h"
  47 #include "lp_texture.h"
  48 #include "lp_winsys.h"
  49 #include "lp_query.h"
  50
  51
  52
  53 /**
  54  * Map any drawing surfaces which aren't already mapped
  55  */
  56 void
  57 llvmpipe_map_transfers(struct llvmpipe_context *lp)
  58 {
  59    struct pipe_screen *screen = lp->pipe.screen;
  60    struct pipe_surface *zsbuf = lp->framebuffer.zsbuf;
  61    unsigned i;
  62
  63    for (i = 0; i < lp->framebuffer.nr_cbufs; i++) {
  64       lp_tile_cache_map_transfers(lp->cbuf_cache[i]);
  65    }
  66
  67    if(zsbuf) {
  68       if(!lp->zsbuf_transfer)
  69          lp->zsbuf_transfer = screen->get_tex_transfer(screen, zsbuf->texture,
  70                                                        zsbuf->face, zsbuf->level, zsbuf->zslice,
  71                                                        PIPE_TRANSFER_READ_WRITE,
  72                                                        0, 0, zsbuf->width, zsbuf->height);
  73       if(lp->zsbuf_transfer && !lp->zsbuf_map)
  74          lp->zsbuf_map = screen->transfer_map(screen, lp->zsbuf_transfer);
  75
  76    }
  77 }
  78
  79
  80 /**
  81  * Unmap any mapped drawing surfaces
  82  */
  83 void
  84 llvmpipe_unmap_transfers(struct llvmpipe_context *lp)
  85 {
  86    uint i;
  87
  88    for (i = 0; i < lp->framebuffer.nr_cbufs; i++) {
  89       lp_tile_cache_unmap_transfers(lp->cbuf_cache[i]);
  90    }
  91
  92    if(lp->zsbuf_transfer) {
  93       struct pipe_screen *screen = lp->pipe.screen;
  94
  95       if(lp->zsbuf_map) {
  96          screen->transfer_unmap(screen, lp->zsbuf_transfer);
  97          lp->zsbuf_map = NULL;
  98       }
  99    }
 100 }
 101
 102
 103 static void llvmpipe_destroy( struct pipe_context *pipe )
 104 {
 105    struct llvmpipe_context *llvmpipe = llvmpipe_context( pipe );
 106    uint i;
 107
 108    if (llvmpipe->draw)
 109       draw_destroy( llvmpipe->draw );
 110
 111    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
 112       lp_destroy_tile_cache(llvmpipe->cbuf_cache[i]);
 113       pipe_surface_reference(&llvmpipe->framebuffer.cbufs[i], NULL);
 114    }
 115    pipe_surface_reference(&llvmpipe->framebuffer.zsbuf, NULL);
 116
 117    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 118       lp_destroy_tex_tile_cache(llvmpipe->tex_cache[i]);
 119       pipe_texture_reference(&llvmpipe->texture[i], NULL);
 120    }
 121
 122    for (i = 0; i < PIPE_MAX_VERTEX_SAMPLERS; i++) {
 123       lp_destroy_tex_tile_cache(llvmpipe->vertex_tex_cache[i]);
 124       pipe_texture_reference(&llvmpipe->vertex_textures[i], NULL);
 125    }
 126
 127    for (i = 0; i < Elements(llvmpipe->constants); i++) {
 128       if (llvmpipe->constants[i]) {
 129          pipe_buffer_reference(&llvmpipe->constants[i], NULL);
 130       }
 131    }
 132
 133    align_free( llvmpipe );
 134 }
 135
 136 static unsigned int
 137 llvmpipe_is_texture_referenced( struct pipe_context *pipe,
 138                                 struct pipe_texture *texture,
 139                                 unsigned face, unsigned level)
 140 {
 141    struct llvmpipe_context *llvmpipe = llvmpipe_context( pipe );
 142    unsigned i;
 143
 144    /* check if any of the bound drawing surfaces are this texture */
 145    if(llvmpipe->dirty_render_cache) {
 146       for (i = 0; i < llvmpipe->framebuffer.nr_cbufs; i++) {
 147          if(llvmpipe->framebuffer.cbufs[i] &&
 148             llvmpipe->framebuffer.cbufs[i]->texture == texture)
 149             return PIPE_REFERENCED_FOR_WRITE;
 150       }
 151       if(llvmpipe->framebuffer.zsbuf &&
 152          llvmpipe->framebuffer.zsbuf->texture == texture)
 153          return PIPE_REFERENCED_FOR_WRITE;
 154    }
 155
 156    /* check if any of the tex_cache textures are this texture */
 157    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 158       if (llvmpipe->tex_cache[i] &&
 159             llvmpipe->tex_cache[i]->texture == texture)
 160          return PIPE_REFERENCED_FOR_READ;
 161    }
 162    for (i = 0; i < PIPE_MAX_VERTEX_SAMPLERS; i++) {
 163       if (llvmpipe->vertex_tex_cache[i] &&
 164           llvmpipe->vertex_tex_cache[i]->texture == texture)
 165          return PIPE_REFERENCED_FOR_READ;
 166    }
 167
 168    return PIPE_UNREFERENCED;
 169 }
 170
 171 static unsigned int
 172 llvmpipe_is_buffer_referenced( struct pipe_context *pipe,
 173                                struct pipe_buffer *buf)
 174 {
 175    return PIPE_UNREFERENCED;
 176 }
 177
 178 struct pipe_context *
 179 llvmpipe_create( struct pipe_screen *screen )
 180 {
 181    struct llvmpipe_context *llvmpipe;
 182    uint i;
 183
 184    llvmpipe = align_malloc(sizeof(struct llvmpipe_context), 16);
 185    if (!llvmpipe)
 186       return NULL;
 187
 188    util_init_math();
 189
 190    memset(llvmpipe, 0, sizeof *llvmpipe);
 191
 192    llvmpipe->pipe.winsys = screen->winsys;
 193    llvmpipe->pipe.screen = screen;
 194    llvmpipe->pipe.destroy = llvmpipe_destroy;
 195
 196    /* state setters */
 197    llvmpipe->pipe.create_blend_state = llvmpipe_create_blend_state;
 198    llvmpipe->pipe.bind_blend_state   = llvmpipe_bind_blend_state;
 199    llvmpipe->pipe.delete_blend_state = llvmpipe_delete_blend_state;
 200
 201    llvmpipe->pipe.create_sampler_state = llvmpipe_create_sampler_state;
 202    llvmpipe->pipe.bind_fragment_sampler_states  = llvmpipe_bind_sampler_states;
 203    llvmpipe->pipe.bind_vertex_sampler_states  = llvmpipe_bind_vertex_sampler_states;
 204    llvmpipe->pipe.delete_sampler_state = llvmpipe_delete_sampler_state;
 205
 206    llvmpipe->pipe.create_depth_stencil_alpha_state = llvmpipe_create_depth_stencil_state;
 207    llvmpipe->pipe.bind_depth_stencil_alpha_state   = llvmpipe_bind_depth_stencil_state;
 208    llvmpipe->pipe.delete_depth_stencil_alpha_state = llvmpipe_delete_depth_stencil_state;
 209
 210    llvmpipe->pipe.create_rasterizer_state = llvmpipe_create_rasterizer_state;
 211    llvmpipe->pipe.bind_rasterizer_state   = llvmpipe_bind_rasterizer_state;
 212    llvmpipe->pipe.delete_rasterizer_state = llvmpipe_delete_rasterizer_state;
 213
 214    llvmpipe->pipe.create_fs_state = llvmpipe_create_fs_state;
 215    llvmpipe->pipe.bind_fs_state   = llvmpipe_bind_fs_state;
 216    llvmpipe->pipe.delete_fs_state = llvmpipe_delete_fs_state;
 217
 218    llvmpipe->pipe.create_vs_state = llvmpipe_create_vs_state;
 219    llvmpipe->pipe.bind_vs_state   = llvmpipe_bind_vs_state;
 220    llvmpipe->pipe.delete_vs_state = llvmpipe_delete_vs_state;
 221
 222    llvmpipe->pipe.set_blend_color = llvmpipe_set_blend_color;
 223    llvmpipe->pipe.set_clip_state = llvmpipe_set_clip_state;
 224    llvmpipe->pipe.set_constant_buffer = llvmpipe_set_constant_buffer;
 225    llvmpipe->pipe.set_framebuffer_state = llvmpipe_set_framebuffer_state;
 226    llvmpipe->pipe.set_polygon_stipple = llvmpipe_set_polygon_stipple;
 227    llvmpipe->pipe.set_scissor_state = llvmpipe_set_scissor_state;
 228    llvmpipe->pipe.set_fragment_sampler_textures = llvmpipe_set_sampler_textures;
 229    llvmpipe->pipe.set_vertex_sampler_textures = llvmpipe_set_vertex_sampler_textures;
 230    llvmpipe->pipe.set_viewport_state = llvmpipe_set_viewport_state;
 231
 232    llvmpipe->pipe.set_vertex_buffers = llvmpipe_set_vertex_buffers;
 233    llvmpipe->pipe.set_vertex_elements = llvmpipe_set_vertex_elements;
 234
 235    llvmpipe->pipe.draw_arrays = llvmpipe_draw_arrays;
 236    llvmpipe->pipe.draw_elements = llvmpipe_draw_elements;
 237    llvmpipe->pipe.draw_range_elements = llvmpipe_draw_range_elements;
 238
 239    llvmpipe->pipe.clear = llvmpipe_clear;
 240    llvmpipe->pipe.flush = llvmpipe_flush;
 241
 242    llvmpipe->pipe.is_texture_referenced = llvmpipe_is_texture_referenced;
 243    llvmpipe->pipe.is_buffer_referenced = llvmpipe_is_buffer_referenced;
 244
 245    llvmpipe_init_query_funcs( llvmpipe );
 246    llvmpipe_init_texture_funcs( llvmpipe );
 247
 248    /*
 249     * Alloc caches for accessing drawing surfaces and textures.
 250     */
 251    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++)
 252       llvmpipe->cbuf_cache[i] = lp_create_tile_cache( screen );
 253
 254    for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
 255       llvmpipe->tex_cache[i] = lp_create_tex_tile_cache( screen );
 256    for (i = 0; i < PIPE_MAX_VERTEX_SAMPLERS; i++)
 257       llvmpipe->vertex_tex_cache[i] = lp_create_tex_tile_cache(screen);
 258
 259
 260    /*
 261     * Create drawing context and plug our rendering stage into it.
 262     */
 263    llvmpipe->draw = draw_create();
 264    if (!llvmpipe->draw)
 265       goto fail;
 266
 267    /* FIXME: devise alternative to draw_texture_samplers */
 268
 269    if (debug_get_bool_option( "LP_NO_RAST", FALSE ))
 270       llvmpipe->no_rast = TRUE;
 271
 272    llvmpipe->vbuf_backend = lp_create_vbuf_backend(llvmpipe);
 273    if (!llvmpipe->vbuf_backend)
 274       goto fail;
 275
 276    llvmpipe->vbuf = draw_vbuf_stage(llvmpipe->draw, llvmpipe->vbuf_backend);
 277    if (!llvmpipe->vbuf)
 278       goto fail;
 279
 280    draw_set_rasterize_stage(llvmpipe->draw, llvmpipe->vbuf);
 281    draw_set_render(llvmpipe->draw, llvmpipe->vbuf_backend);
 282
 283
 284
 285    /* plug in AA line/point stages */
 286    draw_install_aaline_stage(llvmpipe->draw, &llvmpipe->pipe);
 287    draw_install_aapoint_stage(llvmpipe->draw, &llvmpipe->pipe);
 288
 289 #if USE_DRAW_STAGE_PSTIPPLE
 290    /* Do polygon stipple w/ texture map + frag prog? */
 291    draw_install_pstipple_stage(llvmpipe->draw, &llvmpipe->pipe);
 292 #endif
 293
 294    lp_init_surface_functions(llvmpipe);
 295
 296    return &llvmpipe->pipe;
 297
 298  fail:
 299    llvmpipe_destroy(&llvmpipe->pipe);
 300    return NULL;
 301 }
 302