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    unsigned i;
  59
  60    for (i = 0; i < lp->framebuffer.nr_cbufs; i++) {
  61       lp_tile_cache_map_transfers(lp->cbuf_cache[i]);
  62    }
  63
  64    lp_tile_cache_map_transfers(lp->zsbuf_cache);
  65 }
  66
  67
  68 /**
  69  * Unmap any mapped drawing surfaces
  70  */
  71 void
  72 llvmpipe_unmap_transfers(struct llvmpipe_context *lp)
  73 {
  74    uint i;
  75
  76    for (i = 0; i < lp->framebuffer.nr_cbufs; i++) {
  77       lp_tile_cache_unmap_transfers(lp->cbuf_cache[i]);
  78    }
  79
  80    lp_tile_cache_unmap_transfers(lp->zsbuf_cache);
  81 }
  82
  83
  84 static void llvmpipe_destroy( struct pipe_context *pipe )
  85 {
  86    struct llvmpipe_context *llvmpipe = llvmpipe_context( pipe );
  87    uint i;
  88
  89    if (llvmpipe->draw)
  90       draw_destroy( llvmpipe->draw );
  91
  92       llvmpipe->quad.shade->destroy( llvmpipe->quad.shade );
  93       llvmpipe->quad.depth_test->destroy( llvmpipe->quad.depth_test );
  94       llvmpipe->quad.blend->destroy( llvmpipe->quad.blend );
  95
  96    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++)
  97       lp_destroy_tile_cache(llvmpipe->cbuf_cache[i]);
  98    lp_destroy_tile_cache(llvmpipe->zsbuf_cache);
  99
 100    for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
 101       lp_destroy_tex_tile_cache(llvmpipe->tex_cache[i]);
 102
 103    for (i = 0; i < Elements(llvmpipe->constants); i++) {
 104       if (llvmpipe->constants[i].buffer) {
 105          pipe_buffer_reference(&llvmpipe->constants[i].buffer, NULL);
 106       }
 107    }
 108
 109    align_free( llvmpipe );
 110 }
 111
 112 static unsigned int
 113 llvmpipe_is_texture_referenced( struct pipe_context *pipe,
 114                                 struct pipe_texture *texture,
 115                                 unsigned face, unsigned level)
 116 {
 117    struct llvmpipe_context *llvmpipe = llvmpipe_context( pipe );
 118    unsigned i;
 119
 120    if(llvmpipe->dirty_render_cache) {
 121       for (i = 0; i < llvmpipe->framebuffer.nr_cbufs; i++) {
 122          if(llvmpipe->framebuffer.cbufs[i] &&
 123             llvmpipe->framebuffer.cbufs[i]->texture == texture)
 124             return PIPE_REFERENCED_FOR_WRITE;
 125       }
 126       if(llvmpipe->framebuffer.zsbuf &&
 127          llvmpipe->framebuffer.zsbuf->texture == texture)
 128          return PIPE_REFERENCED_FOR_WRITE;
 129    }
 130
 131    /* FIXME: we also need to do the same for the texture cache */
 132
 133    return PIPE_UNREFERENCED;
 134 }
 135
 136 static unsigned int
 137 llvmpipe_is_buffer_referenced( struct pipe_context *pipe,
 138                                struct pipe_buffer *buf)
 139 {
 140    return PIPE_UNREFERENCED;
 141 }
 142
 143 struct pipe_context *
 144 llvmpipe_create( struct pipe_screen *screen )
 145 {
 146    struct llvmpipe_context *llvmpipe;
 147    uint i;
 148
 149    llvmpipe = align_malloc(sizeof(struct llvmpipe_context), 16);
 150    if (!llvmpipe)
 151       return NULL;
 152
 153    util_init_math();
 154
 155    memset(llvmpipe, 0, sizeof *llvmpipe);
 156
 157    llvmpipe->pipe.winsys = screen->winsys;
 158    llvmpipe->pipe.screen = screen;
 159    llvmpipe->pipe.destroy = llvmpipe_destroy;
 160
 161    /* state setters */
 162    llvmpipe->pipe.create_blend_state = llvmpipe_create_blend_state;
 163    llvmpipe->pipe.bind_blend_state   = llvmpipe_bind_blend_state;
 164    llvmpipe->pipe.delete_blend_state = llvmpipe_delete_blend_state;
 165
 166    llvmpipe->pipe.create_sampler_state = llvmpipe_create_sampler_state;
 167    llvmpipe->pipe.bind_sampler_states  = llvmpipe_bind_sampler_states;
 168    llvmpipe->pipe.delete_sampler_state = llvmpipe_delete_sampler_state;
 169
 170    llvmpipe->pipe.create_depth_stencil_alpha_state = llvmpipe_create_depth_stencil_state;
 171    llvmpipe->pipe.bind_depth_stencil_alpha_state   = llvmpipe_bind_depth_stencil_state;
 172    llvmpipe->pipe.delete_depth_stencil_alpha_state = llvmpipe_delete_depth_stencil_state;
 173
 174    llvmpipe->pipe.create_rasterizer_state = llvmpipe_create_rasterizer_state;
 175    llvmpipe->pipe.bind_rasterizer_state   = llvmpipe_bind_rasterizer_state;
 176    llvmpipe->pipe.delete_rasterizer_state = llvmpipe_delete_rasterizer_state;
 177
 178    llvmpipe->pipe.create_fs_state = llvmpipe_create_fs_state;
 179    llvmpipe->pipe.bind_fs_state   = llvmpipe_bind_fs_state;
 180    llvmpipe->pipe.delete_fs_state = llvmpipe_delete_fs_state;
 181
 182    llvmpipe->pipe.create_vs_state = llvmpipe_create_vs_state;
 183    llvmpipe->pipe.bind_vs_state   = llvmpipe_bind_vs_state;
 184    llvmpipe->pipe.delete_vs_state = llvmpipe_delete_vs_state;
 185
 186    llvmpipe->pipe.set_blend_color = llvmpipe_set_blend_color;
 187    llvmpipe->pipe.set_clip_state = llvmpipe_set_clip_state;
 188    llvmpipe->pipe.set_constant_buffer = llvmpipe_set_constant_buffer;
 189    llvmpipe->pipe.set_framebuffer_state = llvmpipe_set_framebuffer_state;
 190    llvmpipe->pipe.set_polygon_stipple = llvmpipe_set_polygon_stipple;
 191    llvmpipe->pipe.set_scissor_state = llvmpipe_set_scissor_state;
 192    llvmpipe->pipe.set_sampler_textures = llvmpipe_set_sampler_textures;
 193    llvmpipe->pipe.set_viewport_state = llvmpipe_set_viewport_state;
 194
 195    llvmpipe->pipe.set_vertex_buffers = llvmpipe_set_vertex_buffers;
 196    llvmpipe->pipe.set_vertex_elements = llvmpipe_set_vertex_elements;
 197
 198    llvmpipe->pipe.draw_arrays = llvmpipe_draw_arrays;
 199    llvmpipe->pipe.draw_elements = llvmpipe_draw_elements;
 200    llvmpipe->pipe.draw_range_elements = llvmpipe_draw_range_elements;
 201    llvmpipe->pipe.set_edgeflags = llvmpipe_set_edgeflags;
 202
 203
 204    llvmpipe->pipe.clear = llvmpipe_clear;
 205    llvmpipe->pipe.flush = llvmpipe_flush;
 206
 207    llvmpipe->pipe.is_texture_referenced = llvmpipe_is_texture_referenced;
 208    llvmpipe->pipe.is_buffer_referenced = llvmpipe_is_buffer_referenced;
 209
 210    llvmpipe_init_query_funcs( llvmpipe );
 211    llvmpipe_init_texture_funcs( llvmpipe );
 212
 213    /*
 214     * Alloc caches for accessing drawing surfaces and textures.
 215     * Must be before quad stage setup!
 216     */
 217    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++)
 218       llvmpipe->cbuf_cache[i] = lp_create_tile_cache( screen );
 219    llvmpipe->zsbuf_cache = lp_create_tile_cache( screen );
 220
 221    for (i = 0; i < PIPE_MAX_SAMPLERS; i++)
 222       llvmpipe->tex_cache[i] = lp_create_tex_tile_cache( screen );
 223
 224
 225    /* setup quad rendering stages */
 226       llvmpipe->quad.shade = lp_quad_shade_stage(llvmpipe);
 227       llvmpipe->quad.depth_test = lp_quad_depth_test_stage(llvmpipe);
 228       llvmpipe->quad.blend = lp_quad_blend_stage(llvmpipe);
 229
 230    /* vertex shader samplers */
 231    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 232       llvmpipe->tgsi.vert_samplers[i].base.get_samples = lp_get_samples_vertex;
 233       llvmpipe->tgsi.vert_samplers[i].cache = llvmpipe->tex_cache[i];
 234       llvmpipe->tgsi.vert_samplers_list[i] = &llvmpipe->tgsi.vert_samplers[i];
 235    }
 236
 237    /* fragment shader samplers */
 238    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 239       llvmpipe->tgsi.frag_samplers[i].base.get_samples = lp_get_samples_fragment;
 240       llvmpipe->tgsi.frag_samplers[i].cache = llvmpipe->tex_cache[i];
 241       llvmpipe->tgsi.frag_samplers_list[i] = &llvmpipe->tgsi.frag_samplers[i];
 242    }
 243
 244    /*
 245     * Create drawing context and plug our rendering stage into it.
 246     */
 247    llvmpipe->draw = draw_create();
 248    if (!llvmpipe->draw)
 249       goto fail;
 250
 251    draw_texture_samplers(llvmpipe->draw,
 252                          PIPE_MAX_SAMPLERS,
 253                          (struct tgsi_sampler **)
 254                             llvmpipe->tgsi.vert_samplers_list);
 255
 256    llvmpipe->setup = lp_draw_render_stage(llvmpipe);
 257    if (!llvmpipe->setup)
 258       goto fail;
 259
 260    if (debug_get_bool_option( "LP_NO_RAST", FALSE ))
 261       llvmpipe->no_rast = TRUE;
 262
 263    if (debug_get_bool_option( "LP_NO_VBUF", FALSE )) {
 264       /* Deprecated path -- vbuf is the intended interface to the draw module:
 265        */
 266       draw_set_rasterize_stage(llvmpipe->draw, llvmpipe->setup);
 267    }
 268    else {
 269       lp_init_vbuf(llvmpipe);
 270    }
 271
 272    /* plug in AA line/point stages */
 273    draw_install_aaline_stage(llvmpipe->draw, &llvmpipe->pipe);
 274    draw_install_aapoint_stage(llvmpipe->draw, &llvmpipe->pipe);
 275
 276 #if USE_DRAW_STAGE_PSTIPPLE
 277    /* Do polygon stipple w/ texture map + frag prog? */
 278    draw_install_pstipple_stage(llvmpipe->draw, &llvmpipe->pipe);
 279 #endif
 280
 281    lp_init_surface_functions(llvmpipe);
 282
 283    return &llvmpipe->pipe;
 284
 285  fail:
 286    llvmpipe_destroy(&llvmpipe->pipe);
 287    return NULL;
 288 }
 289