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