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