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 "pipe/p_defines.h"
  35 #include "util/u_math.h"
  36 #include "util/u_memory.h"
  37 #include "lp_clear.h"
  38 #include "lp_context.h"
  39 #include "lp_flush.h"
  40 #include "lp_prim_setup.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 < Elements(llvmpipe->constants); i++) {
 122       if (llvmpipe->constants[i].buffer) {
 123          pipe_buffer_reference(&llvmpipe->constants[i].buffer, NULL);
 124       }
 125    }
 126
 127    align_free( llvmpipe );
 128 }
 129
 130 static unsigned int
 131 llvmpipe_is_texture_referenced( struct pipe_context *pipe,
 132                                 struct pipe_texture *texture,
 133                                 unsigned face, unsigned level)
 134 {
 135    struct llvmpipe_context *llvmpipe = llvmpipe_context( pipe );
 136    unsigned i;
 137
 138    if(llvmpipe->dirty_render_cache) {
 139       for (i = 0; i < llvmpipe->framebuffer.nr_cbufs; i++) {
 140          if(llvmpipe->framebuffer.cbufs[i] &&
 141             llvmpipe->framebuffer.cbufs[i]->texture == texture)
 142             return PIPE_REFERENCED_FOR_WRITE;
 143       }
 144       if(llvmpipe->framebuffer.zsbuf &&
 145          llvmpipe->framebuffer.zsbuf->texture == texture)
 146          return PIPE_REFERENCED_FOR_WRITE;
 147    }
 148
 149    return PIPE_UNREFERENCED;
 150 }
 151
 152 static unsigned int
 153 llvmpipe_is_buffer_referenced( struct pipe_context *pipe,
 154                                struct pipe_buffer *buf)
 155 {
 156    return PIPE_UNREFERENCED;
 157 }
 158
 159 struct pipe_context *
 160 llvmpipe_create( struct pipe_screen *screen )
 161 {
 162    struct llvmpipe_context *llvmpipe;
 163    uint i;
 164
 165    llvmpipe = align_malloc(sizeof(struct llvmpipe_context), 16);
 166    if (!llvmpipe)
 167       return NULL;
 168
 169    util_init_math();
 170
 171    memset(llvmpipe, 0, sizeof *llvmpipe);
 172
 173    llvmpipe->pipe.winsys = screen->winsys;
 174    llvmpipe->pipe.screen = screen;
 175    llvmpipe->pipe.destroy = llvmpipe_destroy;
 176
 177    /* state setters */
 178    llvmpipe->pipe.create_blend_state = llvmpipe_create_blend_state;
 179    llvmpipe->pipe.bind_blend_state   = llvmpipe_bind_blend_state;
 180    llvmpipe->pipe.delete_blend_state = llvmpipe_delete_blend_state;
 181
 182    llvmpipe->pipe.create_sampler_state = llvmpipe_create_sampler_state;
 183    llvmpipe->pipe.bind_sampler_states  = llvmpipe_bind_sampler_states;
 184    llvmpipe->pipe.delete_sampler_state = llvmpipe_delete_sampler_state;
 185
 186    llvmpipe->pipe.create_depth_stencil_alpha_state = llvmpipe_create_depth_stencil_state;
 187    llvmpipe->pipe.bind_depth_stencil_alpha_state   = llvmpipe_bind_depth_stencil_state;
 188    llvmpipe->pipe.delete_depth_stencil_alpha_state = llvmpipe_delete_depth_stencil_state;
 189
 190    llvmpipe->pipe.create_rasterizer_state = llvmpipe_create_rasterizer_state;
 191    llvmpipe->pipe.bind_rasterizer_state   = llvmpipe_bind_rasterizer_state;
 192    llvmpipe->pipe.delete_rasterizer_state = llvmpipe_delete_rasterizer_state;
 193
 194    llvmpipe->pipe.create_fs_state = llvmpipe_create_fs_state;
 195    llvmpipe->pipe.bind_fs_state   = llvmpipe_bind_fs_state;
 196    llvmpipe->pipe.delete_fs_state = llvmpipe_delete_fs_state;
 197
 198    llvmpipe->pipe.create_vs_state = llvmpipe_create_vs_state;
 199    llvmpipe->pipe.bind_vs_state   = llvmpipe_bind_vs_state;
 200    llvmpipe->pipe.delete_vs_state = llvmpipe_delete_vs_state;
 201
 202    llvmpipe->pipe.set_blend_color = llvmpipe_set_blend_color;
 203    llvmpipe->pipe.set_clip_state = llvmpipe_set_clip_state;
 204    llvmpipe->pipe.set_constant_buffer = llvmpipe_set_constant_buffer;
 205    llvmpipe->pipe.set_framebuffer_state = llvmpipe_set_framebuffer_state;
 206    llvmpipe->pipe.set_polygon_stipple = llvmpipe_set_polygon_stipple;
 207    llvmpipe->pipe.set_scissor_state = llvmpipe_set_scissor_state;
 208    llvmpipe->pipe.set_sampler_textures = llvmpipe_set_sampler_textures;
 209    llvmpipe->pipe.set_viewport_state = llvmpipe_set_viewport_state;
 210
 211    llvmpipe->pipe.set_vertex_buffers = llvmpipe_set_vertex_buffers;
 212    llvmpipe->pipe.set_vertex_elements = llvmpipe_set_vertex_elements;
 213
 214    llvmpipe->pipe.draw_arrays = llvmpipe_draw_arrays;
 215    llvmpipe->pipe.draw_elements = llvmpipe_draw_elements;
 216    llvmpipe->pipe.draw_range_elements = llvmpipe_draw_range_elements;
 217    llvmpipe->pipe.set_edgeflags = llvmpipe_set_edgeflags;
 218
 219
 220    llvmpipe->pipe.clear = llvmpipe_clear;
 221    llvmpipe->pipe.flush = llvmpipe_flush;
 222
 223    llvmpipe->pipe.is_texture_referenced = llvmpipe_is_texture_referenced;
 224    llvmpipe->pipe.is_buffer_referenced = llvmpipe_is_buffer_referenced;
 225
 226    llvmpipe_init_query_funcs( llvmpipe );
 227    llvmpipe_init_texture_funcs( llvmpipe );
 228
 229    /*
 230     * Alloc caches for accessing drawing surfaces and textures.
 231     */
 232    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++)
 233       llvmpipe->cbuf_cache[i] = lp_create_tile_cache( screen );
 234
 235    for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
 236       llvmpipe->tex_cache[i] = lp_create_tex_tile_cache( screen );
 237
 238
 239    /* vertex shader samplers */
 240    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 241       llvmpipe->tgsi.vert_samplers[i].base.get_samples = lp_get_samples;
 242       llvmpipe->tgsi.vert_samplers[i].processor = TGSI_PROCESSOR_VERTEX;
 243       llvmpipe->tgsi.vert_samplers[i].cache = llvmpipe->tex_cache[i];
 244       llvmpipe->tgsi.vert_samplers_list[i] = &llvmpipe->tgsi.vert_samplers[i];
 245    }
 246
 247    /* fragment shader samplers */
 248    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 249       llvmpipe->tgsi.frag_samplers[i].base.get_samples = lp_get_samples;
 250       llvmpipe->tgsi.frag_samplers[i].processor = TGSI_PROCESSOR_FRAGMENT;
 251       llvmpipe->tgsi.frag_samplers[i].cache = llvmpipe->tex_cache[i];
 252       llvmpipe->tgsi.frag_samplers_list[i] = &llvmpipe->tgsi.frag_samplers[i];
 253    }
 254
 255    /*
 256     * Create drawing context and plug our rendering stage into it.
 257     */
 258    llvmpipe->draw = draw_create();
 259    if (!llvmpipe->draw)
 260       goto fail;
 261
 262    draw_texture_samplers(llvmpipe->draw,
 263                          PIPE_MAX_SAMPLERS,
 264                          (struct tgsi_sampler **)
 265                             llvmpipe->tgsi.vert_samplers_list);
 266
 267    llvmpipe->setup = lp_draw_render_stage(llvmpipe);
 268    if (!llvmpipe->setup)
 269       goto fail;
 270
 271    if (debug_get_bool_option( "LP_NO_RAST", FALSE ))
 272       llvmpipe->no_rast = TRUE;
 273
 274    if (debug_get_bool_option( "LP_NO_VBUF", FALSE )) {
 275       /* Deprecated path -- vbuf is the intended interface to the draw module:
 276        */
 277       draw_set_rasterize_stage(llvmpipe->draw, llvmpipe->setup);
 278    }
 279    else {
 280       lp_init_vbuf(llvmpipe);
 281    }
 282
 283    /* plug in AA line/point stages */
 284    draw_install_aaline_stage(llvmpipe->draw, &llvmpipe->pipe);
 285    draw_install_aapoint_stage(llvmpipe->draw, &llvmpipe->pipe);
 286
 287 #if USE_DRAW_STAGE_PSTIPPLE
 288    /* Do polygon stipple w/ texture map + frag prog? */
 289    draw_install_pstipple_stage(llvmpipe->draw, &llvmpipe->pipe);
 290 #endif
 291
 292    lp_init_surface_functions(llvmpipe);
 293
 294    return &llvmpipe->pipe;
 295
 296  fail:
 297    llvmpipe_destroy(&llvmpipe->pipe);
 298    return NULL;
 299 }
 300