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_state.h"
  41 #include "lp_surface.h"
  42 #include "lp_texture.h"
  43 #include "lp_winsys.h"
  44 #include "lp_query.h"
  45 #include "lp_setup.h"
  46
  47
  48
  49
  50
  51 static void llvmpipe_destroy( struct pipe_context *pipe )
  52 {
  53    struct llvmpipe_context *llvmpipe = llvmpipe_context( pipe );
  54    uint i;
  55
  56    /* This will also destroy llvmpipe->setup:
  57     */
  58    if (llvmpipe->draw)
  59       draw_destroy( llvmpipe->draw );
  60
  61    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
  62       pipe_surface_reference(&llvmpipe->framebuffer.cbufs[i], NULL);
  63    }
  64
  65    pipe_surface_reference(&llvmpipe->framebuffer.zsbuf, NULL);
  66
  67    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
  68       pipe_texture_reference(&llvmpipe->texture[i], NULL);
  69    }
  70
  71    for (i = 0; i < Elements(llvmpipe->constants); i++) {
  72       if (llvmpipe->constants[i].buffer) {
  73          pipe_buffer_reference(&llvmpipe->constants[i].buffer, NULL);
  74       }
  75    }
  76
  77    align_free( llvmpipe );
  78 }
  79
  80 static unsigned int
  81 llvmpipe_is_texture_referenced( struct pipe_context *pipe,
  82                                 struct pipe_texture *texture,
  83                                 unsigned face, unsigned level)
  84 {
  85    struct llvmpipe_context *llvmpipe = llvmpipe_context( pipe );
  86
  87    return lp_setup_is_texture_referenced(llvmpipe->setup, texture);
  88 }
  89
  90 static unsigned int
  91 llvmpipe_is_buffer_referenced( struct pipe_context *pipe,
  92                                struct pipe_buffer *buf)
  93 {
  94    return PIPE_UNREFERENCED;
  95 }
  96
  97 struct pipe_context *
  98 llvmpipe_create( struct pipe_screen *screen )
  99 {
 100    struct llvmpipe_context *llvmpipe;
 101
 102    llvmpipe = align_malloc(sizeof(struct llvmpipe_context), 16);
 103    if (!llvmpipe)
 104       return NULL;
 105
 106    util_init_math();
 107
 108    memset(llvmpipe, 0, sizeof *llvmpipe);
 109
 110    llvmpipe->pipe.winsys = screen->winsys;
 111    llvmpipe->pipe.screen = screen;
 112    llvmpipe->pipe.destroy = llvmpipe_destroy;
 113
 114    /* state setters */
 115    llvmpipe->pipe.create_blend_state = llvmpipe_create_blend_state;
 116    llvmpipe->pipe.bind_blend_state   = llvmpipe_bind_blend_state;
 117    llvmpipe->pipe.delete_blend_state = llvmpipe_delete_blend_state;
 118
 119    llvmpipe->pipe.create_sampler_state = llvmpipe_create_sampler_state;
 120    llvmpipe->pipe.bind_sampler_states  = llvmpipe_bind_sampler_states;
 121    llvmpipe->pipe.delete_sampler_state = llvmpipe_delete_sampler_state;
 122
 123    llvmpipe->pipe.create_depth_stencil_alpha_state = llvmpipe_create_depth_stencil_state;
 124    llvmpipe->pipe.bind_depth_stencil_alpha_state   = llvmpipe_bind_depth_stencil_state;
 125    llvmpipe->pipe.delete_depth_stencil_alpha_state = llvmpipe_delete_depth_stencil_state;
 126
 127    llvmpipe->pipe.create_rasterizer_state = llvmpipe_create_rasterizer_state;
 128    llvmpipe->pipe.bind_rasterizer_state   = llvmpipe_bind_rasterizer_state;
 129    llvmpipe->pipe.delete_rasterizer_state = llvmpipe_delete_rasterizer_state;
 130
 131    llvmpipe->pipe.create_fs_state = llvmpipe_create_fs_state;
 132    llvmpipe->pipe.bind_fs_state   = llvmpipe_bind_fs_state;
 133    llvmpipe->pipe.delete_fs_state = llvmpipe_delete_fs_state;
 134
 135    llvmpipe->pipe.create_vs_state = llvmpipe_create_vs_state;
 136    llvmpipe->pipe.bind_vs_state   = llvmpipe_bind_vs_state;
 137    llvmpipe->pipe.delete_vs_state = llvmpipe_delete_vs_state;
 138
 139    llvmpipe->pipe.set_blend_color = llvmpipe_set_blend_color;
 140    llvmpipe->pipe.set_clip_state = llvmpipe_set_clip_state;
 141    llvmpipe->pipe.set_constant_buffer = llvmpipe_set_constant_buffer;
 142    llvmpipe->pipe.set_framebuffer_state = llvmpipe_set_framebuffer_state;
 143    llvmpipe->pipe.set_polygon_stipple = llvmpipe_set_polygon_stipple;
 144    llvmpipe->pipe.set_scissor_state = llvmpipe_set_scissor_state;
 145    llvmpipe->pipe.set_sampler_textures = llvmpipe_set_sampler_textures;
 146    llvmpipe->pipe.set_viewport_state = llvmpipe_set_viewport_state;
 147
 148    llvmpipe->pipe.set_vertex_buffers = llvmpipe_set_vertex_buffers;
 149    llvmpipe->pipe.set_vertex_elements = llvmpipe_set_vertex_elements;
 150
 151    llvmpipe->pipe.draw_arrays = llvmpipe_draw_arrays;
 152    llvmpipe->pipe.draw_elements = llvmpipe_draw_elements;
 153    llvmpipe->pipe.draw_range_elements = llvmpipe_draw_range_elements;
 154    llvmpipe->pipe.set_edgeflags = llvmpipe_set_edgeflags;
 155
 156
 157    llvmpipe->pipe.clear = llvmpipe_clear;
 158    llvmpipe->pipe.flush = llvmpipe_flush;
 159
 160    llvmpipe->pipe.is_texture_referenced = llvmpipe_is_texture_referenced;
 161    llvmpipe->pipe.is_buffer_referenced = llvmpipe_is_buffer_referenced;
 162
 163    llvmpipe_init_query_funcs( llvmpipe );
 164    llvmpipe_init_texture_funcs( llvmpipe );
 165
 166    /*
 167     * Create drawing context and plug our rendering stage into it.
 168     */
 169    llvmpipe->draw = draw_create();
 170    if (!llvmpipe->draw)
 171       goto fail;
 172
 173    /* FIXME: vertex sampler state
 174     */
 175
 176    if (debug_get_bool_option( "LP_NO_RAST", FALSE ))
 177       llvmpipe->no_rast = TRUE;
 178
 179    llvmpipe->setup = lp_setup_create( screen,
 180                                       llvmpipe->draw );
 181    if (!llvmpipe->setup)
 182       goto fail;
 183
 184    /* plug in AA line/point stages */
 185    draw_install_aaline_stage(llvmpipe->draw, &llvmpipe->pipe);
 186    draw_install_aapoint_stage(llvmpipe->draw, &llvmpipe->pipe);
 187
 188 #if USE_DRAW_STAGE_PSTIPPLE
 189    /* Do polygon stipple w/ texture map + frag prog? */
 190    draw_install_pstipple_stage(llvmpipe->draw, &llvmpipe->pipe);
 191 #endif
 192
 193    lp_init_surface_functions(llvmpipe);
 194
 195    return &llvmpipe->pipe;
 196
 197  fail:
 198    llvmpipe_destroy(&llvmpipe->pipe);
 199    return NULL;
 200 }
 201