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_texture.h"
  46 #include "lp_winsys.h"
  47 #include "lp_query.h"
  48
  49
  50
  51 /**
  52  * Map any drawing surfaces which aren't already mapped
  53  */
  54 void
  55 llvmpipe_map_transfers(struct llvmpipe_context *lp)
  56 {
  57    unsigned i;
  58
  59    for (i = 0; i < lp->framebuffer.nr_cbufs; i++) {
  60       lp_tile_cache_map_transfers(lp->cbuf_cache[i]);
  61    }
  62
  63    lp_tile_cache_map_transfers(lp->zsbuf_cache);
  64 }
  65
  66
  67 /**
  68  * Unmap any mapped drawing surfaces
  69  */
  70 void
  71 llvmpipe_unmap_transfers(struct llvmpipe_context *lp)
  72 {
  73    uint i;
  74
  75    for (i = 0; i < lp->framebuffer.nr_cbufs; i++) {
  76       lp_tile_cache_unmap_transfers(lp->cbuf_cache[i]);
  77    }
  78
  79    lp_tile_cache_unmap_transfers(lp->zsbuf_cache);
  80 }
  81
  82
  83 static void llvmpipe_destroy( struct pipe_context *pipe )
  84 {
  85    struct llvmpipe_context *llvmpipe = llvmpipe_context( pipe );
  86    uint i;
  87
  88    if (llvmpipe->draw)
  89       draw_destroy( llvmpipe->draw );
  90
  91       llvmpipe->quad.polygon_stipple->destroy( llvmpipe->quad.polygon_stipple );
  92       llvmpipe->quad.earlyz->destroy( llvmpipe->quad.earlyz );
  93       llvmpipe->quad.shade->destroy( llvmpipe->quad.shade );
  94       llvmpipe->quad.alpha_test->destroy( llvmpipe->quad.alpha_test );
  95       llvmpipe->quad.depth_test->destroy( llvmpipe->quad.depth_test );
  96       llvmpipe->quad.stencil_test->destroy( llvmpipe->quad.stencil_test );
  97       llvmpipe->quad.occlusion->destroy( llvmpipe->quad.occlusion );
  98       llvmpipe->quad.coverage->destroy( llvmpipe->quad.coverage );
  99       llvmpipe->quad.blend->destroy( llvmpipe->quad.blend );
 100
 101    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++)
 102       lp_destroy_tile_cache(llvmpipe->cbuf_cache[i]);
 103    lp_destroy_tile_cache(llvmpipe->zsbuf_cache);
 104
 105    for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
 106       lp_destroy_tile_cache(llvmpipe->tex_cache[i]);
 107
 108    for (i = 0; i < Elements(llvmpipe->constants); i++) {
 109       if (llvmpipe->constants[i].buffer) {
 110          pipe_buffer_reference(&llvmpipe->constants[i].buffer, NULL);
 111       }
 112    }
 113
 114    FREE( llvmpipe );
 115 }
 116
 117 static unsigned int
 118 llvmpipe_is_texture_referenced( struct pipe_context *pipe,
 119                                 struct pipe_texture *texture,
 120                                 unsigned face, unsigned level)
 121 {
 122    struct llvmpipe_context *llvmpipe = llvmpipe_context( pipe );
 123    unsigned i;
 124
 125    if(llvmpipe->dirty_render_cache) {
 126       for (i = 0; i < llvmpipe->framebuffer.nr_cbufs; i++) {
 127          if(llvmpipe->framebuffer.cbufs[i] &&
 128             llvmpipe->framebuffer.cbufs[i]->texture == texture)
 129             return PIPE_REFERENCED_FOR_WRITE;
 130       }
 131       if(llvmpipe->framebuffer.zsbuf &&
 132          llvmpipe->framebuffer.zsbuf->texture == texture)
 133          return PIPE_REFERENCED_FOR_WRITE;
 134    }
 135
 136    /* FIXME: we also need to do the same for the texture cache */
 137
 138    return PIPE_UNREFERENCED;
 139 }
 140
 141 static unsigned int
 142 llvmpipe_is_buffer_referenced( struct pipe_context *pipe,
 143                                struct pipe_buffer *buf)
 144 {
 145    return PIPE_UNREFERENCED;
 146 }
 147
 148 struct pipe_context *
 149 llvmpipe_create( struct pipe_screen *screen )
 150 {
 151    struct llvmpipe_context *llvmpipe = CALLOC_STRUCT(llvmpipe_context);
 152    uint i;
 153
 154    util_init_math();
 155
 156 #ifdef PIPE_ARCH_X86
 157    llvmpipe->use_sse = !debug_get_bool_option( "GALLIUM_NOSSE", FALSE );
 158 #else
 159    llvmpipe->use_sse = FALSE;
 160 #endif
 161
 162    llvmpipe->dump_fs = debug_get_bool_option( "GALLIUM_DUMP_FS", FALSE );
 163
 164    llvmpipe->pipe.winsys = screen->winsys;
 165    llvmpipe->pipe.screen = screen;
 166    llvmpipe->pipe.destroy = llvmpipe_destroy;
 167
 168    /* state setters */
 169    llvmpipe->pipe.create_blend_state = llvmpipe_create_blend_state;
 170    llvmpipe->pipe.bind_blend_state   = llvmpipe_bind_blend_state;
 171    llvmpipe->pipe.delete_blend_state = llvmpipe_delete_blend_state;
 172
 173    llvmpipe->pipe.create_sampler_state = llvmpipe_create_sampler_state;
 174    llvmpipe->pipe.bind_sampler_states  = llvmpipe_bind_sampler_states;
 175    llvmpipe->pipe.delete_sampler_state = llvmpipe_delete_sampler_state;
 176
 177    llvmpipe->pipe.create_depth_stencil_alpha_state = llvmpipe_create_depth_stencil_state;
 178    llvmpipe->pipe.bind_depth_stencil_alpha_state   = llvmpipe_bind_depth_stencil_state;
 179    llvmpipe->pipe.delete_depth_stencil_alpha_state = llvmpipe_delete_depth_stencil_state;
 180
 181    llvmpipe->pipe.create_rasterizer_state = llvmpipe_create_rasterizer_state;
 182    llvmpipe->pipe.bind_rasterizer_state   = llvmpipe_bind_rasterizer_state;
 183    llvmpipe->pipe.delete_rasterizer_state = llvmpipe_delete_rasterizer_state;
 184
 185    llvmpipe->pipe.create_fs_state = llvmpipe_create_fs_state;
 186    llvmpipe->pipe.bind_fs_state   = llvmpipe_bind_fs_state;
 187    llvmpipe->pipe.delete_fs_state = llvmpipe_delete_fs_state;
 188
 189    llvmpipe->pipe.create_vs_state = llvmpipe_create_vs_state;
 190    llvmpipe->pipe.bind_vs_state   = llvmpipe_bind_vs_state;
 191    llvmpipe->pipe.delete_vs_state = llvmpipe_delete_vs_state;
 192
 193    llvmpipe->pipe.set_blend_color = llvmpipe_set_blend_color;
 194    llvmpipe->pipe.set_clip_state = llvmpipe_set_clip_state;
 195    llvmpipe->pipe.set_constant_buffer = llvmpipe_set_constant_buffer;
 196    llvmpipe->pipe.set_framebuffer_state = llvmpipe_set_framebuffer_state;
 197    llvmpipe->pipe.set_polygon_stipple = llvmpipe_set_polygon_stipple;
 198    llvmpipe->pipe.set_scissor_state = llvmpipe_set_scissor_state;
 199    llvmpipe->pipe.set_sampler_textures = llvmpipe_set_sampler_textures;
 200    llvmpipe->pipe.set_viewport_state = llvmpipe_set_viewport_state;
 201
 202    llvmpipe->pipe.set_vertex_buffers = llvmpipe_set_vertex_buffers;
 203    llvmpipe->pipe.set_vertex_elements = llvmpipe_set_vertex_elements;
 204
 205    llvmpipe->pipe.draw_arrays = llvmpipe_draw_arrays;
 206    llvmpipe->pipe.draw_elements = llvmpipe_draw_elements;
 207    llvmpipe->pipe.draw_range_elements = llvmpipe_draw_range_elements;
 208    llvmpipe->pipe.set_edgeflags = llvmpipe_set_edgeflags;
 209
 210
 211    llvmpipe->pipe.clear = llvmpipe_clear;
 212    llvmpipe->pipe.flush = llvmpipe_flush;
 213
 214    llvmpipe->pipe.is_texture_referenced = llvmpipe_is_texture_referenced;
 215    llvmpipe->pipe.is_buffer_referenced = llvmpipe_is_buffer_referenced;
 216
 217    llvmpipe_init_query_funcs( llvmpipe );
 218    llvmpipe_init_texture_funcs( llvmpipe );
 219
 220    /*
 221     * Alloc caches for accessing drawing surfaces and textures.
 222     * Must be before quad stage setup!
 223     */
 224    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++)
 225       llvmpipe->cbuf_cache[i] = lp_create_tile_cache( screen );
 226    llvmpipe->zsbuf_cache = lp_create_tile_cache( screen );
 227
 228    for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
 229       llvmpipe->tex_cache[i] = lp_create_tile_cache( screen );
 230
 231
 232    /* setup quad rendering stages */
 233       llvmpipe->quad.polygon_stipple = lp_quad_polygon_stipple_stage(llvmpipe);
 234       llvmpipe->quad.earlyz = lp_quad_earlyz_stage(llvmpipe);
 235       llvmpipe->quad.shade = lp_quad_shade_stage(llvmpipe);
 236       llvmpipe->quad.alpha_test = lp_quad_alpha_test_stage(llvmpipe);
 237       llvmpipe->quad.depth_test = lp_quad_depth_test_stage(llvmpipe);
 238       llvmpipe->quad.stencil_test = lp_quad_stencil_test_stage(llvmpipe);
 239       llvmpipe->quad.occlusion = lp_quad_occlusion_stage(llvmpipe);
 240       llvmpipe->quad.coverage = lp_quad_coverage_stage(llvmpipe);
 241       llvmpipe->quad.blend = lp_quad_blend_stage(llvmpipe);
 242
 243    /* vertex shader samplers */
 244    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 245       llvmpipe->tgsi.vert_samplers[i].base.get_samples = lp_get_samples_vertex;
 246       llvmpipe->tgsi.vert_samplers[i].cache = llvmpipe->tex_cache[i];
 247       llvmpipe->tgsi.vert_samplers_list[i] = &llvmpipe->tgsi.vert_samplers[i];
 248    }
 249
 250    /* fragment shader samplers */
 251    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 252       llvmpipe->tgsi.frag_samplers[i].base.get_samples = lp_get_samples_fragment;
 253       llvmpipe->tgsi.frag_samplers[i].cache = llvmpipe->tex_cache[i];
 254       llvmpipe->tgsi.frag_samplers_list[i] = &llvmpipe->tgsi.frag_samplers[i];
 255    }
 256
 257    /*
 258     * Create drawing context and plug our rendering stage into it.
 259     */
 260    llvmpipe->draw = draw_create();
 261    if (!llvmpipe->draw)
 262       goto fail;
 263
 264    draw_texture_samplers(llvmpipe->draw,
 265                          PIPE_MAX_SAMPLERS,
 266                          (struct tgsi_sampler **)
 267                             llvmpipe->tgsi.vert_samplers_list);
 268
 269    llvmpipe->setup = lp_draw_render_stage(llvmpipe);
 270    if (!llvmpipe->setup)
 271       goto fail;
 272
 273    if (debug_get_bool_option( "LP_NO_RAST", FALSE ))
 274       llvmpipe->no_rast = TRUE;
 275
 276    if (debug_get_bool_option( "LP_NO_VBUF", FALSE )) {
 277       /* Deprecated path -- vbuf is the intended interface to the draw module:
 278        */
 279       draw_set_rasterize_stage(llvmpipe->draw, llvmpipe->setup);
 280    }
 281    else {
 282       lp_init_vbuf(llvmpipe);
 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