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 "draw/draw_vbuf.h"
  35 #include "pipe/p_defines.h"
  36 #include "util/u_math.h"
  37 #include "util/u_memory.h"
  38 #include "lp_clear.h"
  39 #include "lp_context.h"
  40 #include "lp_flush.h"
  41 #include "lp_prim_vbuf.h"
  42 #include "lp_state.h"
  43 #include "lp_surface.h"
  44 #include "lp_texture.h"
  45 #include "lp_winsys.h"
  46 #include "lp_query.h"
  47
  48
  49
  50
  51
  52 static void llvmpipe_destroy( struct pipe_context *pipe )
  53 {
  54    struct llvmpipe_context *llvmpipe = llvmpipe_context( pipe );
  55    uint i;
  56
  57    if (llvmpipe->draw)
  58       draw_destroy( llvmpipe->draw );
  59
  60    if (llvmpipe->setup)
  61       lp_setup_destroy( llvmpipe->setup );
  62
  63    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
  64       pipe_surface_reference(&llvmpipe->framebuffer.cbufs[i], NULL);
  65    }
  66
  67    pipe_surface_reference(&llvmpipe->framebuffer.zsbuf, NULL);
  68
  69    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
  70       pipe_texture_reference(&llvmpipe->texture[i], NULL);
  71    }
  72
  73    for (i = 0; i < Elements(llvmpipe->constants); i++) {
  74       if (llvmpipe->constants[i].buffer) {
  75          pipe_buffer_reference(&llvmpipe->constants[i].buffer, NULL);
  76       }
  77    }
  78
  79    align_free( llvmpipe );
  80 }
  81
  82 static unsigned int
  83 llvmpipe_is_texture_referenced( struct pipe_context *pipe,
  84                                 struct pipe_texture *texture,
  85                                 unsigned face, unsigned level)
  86 {
  87    struct llvmpipe_context *llvmpipe = llvmpipe_context( pipe );
  88    unsigned i;
  89
  90    if (lp_setup_is_active(llvmpipe->setup)) {
  91       for (i = 0; i < llvmpipe->framebuffer.nr_cbufs; i++) {
  92          if(llvmpipe->framebuffer.cbufs[i] &&
  93             llvmpipe->framebuffer.cbufs[i]->texture == texture)
  94             return PIPE_REFERENCED_FOR_WRITE;
  95       }
  96       if(llvmpipe->framebuffer.zsbuf &&
  97          llvmpipe->framebuffer.zsbuf->texture == texture)
  98          return PIPE_REFERENCED_FOR_WRITE;
  99    }
 100
 101    return PIPE_UNREFERENCED;
 102 }
 103
 104 static unsigned int
 105 llvmpipe_is_buffer_referenced( struct pipe_context *pipe,
 106                                struct pipe_buffer *buf)
 107 {
 108    return PIPE_UNREFERENCED;
 109 }
 110
 111 struct pipe_context *
 112 llvmpipe_create( struct pipe_screen *screen )
 113 {
 114    struct llvmpipe_context *llvmpipe;
 115    uint i;
 116
 117    llvmpipe = align_malloc(sizeof(struct llvmpipe_context), 16);
 118    if (!llvmpipe)
 119       return NULL;
 120
 121    util_init_math();
 122
 123    memset(llvmpipe, 0, sizeof *llvmpipe);
 124
 125    llvmpipe->pipe.winsys = screen->winsys;
 126    llvmpipe->pipe.screen = screen;
 127    llvmpipe->pipe.destroy = llvmpipe_destroy;
 128
 129    /* state setters */
 130    llvmpipe->pipe.create_blend_state = llvmpipe_create_blend_state;
 131    llvmpipe->pipe.bind_blend_state   = llvmpipe_bind_blend_state;
 132    llvmpipe->pipe.delete_blend_state = llvmpipe_delete_blend_state;
 133
 134    llvmpipe->pipe.create_sampler_state = llvmpipe_create_sampler_state;
 135    llvmpipe->pipe.bind_sampler_states  = llvmpipe_bind_sampler_states;
 136    llvmpipe->pipe.delete_sampler_state = llvmpipe_delete_sampler_state;
 137
 138    llvmpipe->pipe.create_depth_stencil_alpha_state = llvmpipe_create_depth_stencil_state;
 139    llvmpipe->pipe.bind_depth_stencil_alpha_state   = llvmpipe_bind_depth_stencil_state;
 140    llvmpipe->pipe.delete_depth_stencil_alpha_state = llvmpipe_delete_depth_stencil_state;
 141
 142    llvmpipe->pipe.create_rasterizer_state = llvmpipe_create_rasterizer_state;
 143    llvmpipe->pipe.bind_rasterizer_state   = llvmpipe_bind_rasterizer_state;
 144    llvmpipe->pipe.delete_rasterizer_state = llvmpipe_delete_rasterizer_state;
 145
 146    llvmpipe->pipe.create_fs_state = llvmpipe_create_fs_state;
 147    llvmpipe->pipe.bind_fs_state   = llvmpipe_bind_fs_state;
 148    llvmpipe->pipe.delete_fs_state = llvmpipe_delete_fs_state;
 149
 150    llvmpipe->pipe.create_vs_state = llvmpipe_create_vs_state;
 151    llvmpipe->pipe.bind_vs_state   = llvmpipe_bind_vs_state;
 152    llvmpipe->pipe.delete_vs_state = llvmpipe_delete_vs_state;
 153
 154    llvmpipe->pipe.set_blend_color = llvmpipe_set_blend_color;
 155    llvmpipe->pipe.set_clip_state = llvmpipe_set_clip_state;
 156    llvmpipe->pipe.set_constant_buffer = llvmpipe_set_constant_buffer;
 157    llvmpipe->pipe.set_framebuffer_state = llvmpipe_set_framebuffer_state;
 158    llvmpipe->pipe.set_polygon_stipple = llvmpipe_set_polygon_stipple;
 159    llvmpipe->pipe.set_scissor_state = llvmpipe_set_scissor_state;
 160    llvmpipe->pipe.set_sampler_textures = llvmpipe_set_sampler_textures;
 161    llvmpipe->pipe.set_viewport_state = llvmpipe_set_viewport_state;
 162
 163    llvmpipe->pipe.set_vertex_buffers = llvmpipe_set_vertex_buffers;
 164    llvmpipe->pipe.set_vertex_elements = llvmpipe_set_vertex_elements;
 165
 166    llvmpipe->pipe.draw_arrays = llvmpipe_draw_arrays;
 167    llvmpipe->pipe.draw_elements = llvmpipe_draw_elements;
 168    llvmpipe->pipe.draw_range_elements = llvmpipe_draw_range_elements;
 169    llvmpipe->pipe.set_edgeflags = llvmpipe_set_edgeflags;
 170
 171
 172    llvmpipe->pipe.clear = llvmpipe_clear;
 173    llvmpipe->pipe.flush = llvmpipe_flush;
 174
 175    llvmpipe->pipe.is_texture_referenced = llvmpipe_is_texture_referenced;
 176    llvmpipe->pipe.is_buffer_referenced = llvmpipe_is_buffer_referenced;
 177
 178    llvmpipe_init_query_funcs( llvmpipe );
 179    llvmpipe_init_texture_funcs( llvmpipe );
 180
 181    /* vertex shader samplers */
 182    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 183       llvmpipe->tgsi.vert_samplers[i].base.get_samples = lp_get_samples;
 184       llvmpipe->tgsi.vert_samplers[i].processor = TGSI_PROCESSOR_VERTEX;
 185       llvmpipe->tgsi.vert_samplers_list[i] = &llvmpipe->tgsi.vert_samplers[i];
 186    }
 187
 188    /* fragment shader samplers */
 189    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 190       llvmpipe->tgsi.frag_samplers[i].base.get_samples = lp_get_samples;
 191       llvmpipe->tgsi.frag_samplers[i].processor = TGSI_PROCESSOR_FRAGMENT;
 192       llvmpipe->tgsi.frag_samplers_list[i] = &llvmpipe->tgsi.frag_samplers[i];
 193    }
 194
 195    /*
 196     * Create drawing context and plug our rendering stage into it.
 197     */
 198    llvmpipe->draw = draw_create();
 199    if (!llvmpipe->draw)
 200       goto fail;
 201
 202    draw_texture_samplers(llvmpipe->draw,
 203                          PIPE_MAX_SAMPLERS,
 204                          (struct tgsi_sampler **)
 205                             llvmpipe->tgsi.vert_samplers_list);
 206
 207    if (debug_get_bool_option( "LP_NO_RAST", FALSE ))
 208       llvmpipe->no_rast = TRUE;
 209
 210    llvmpipe->vbuf_backend = lp_create_vbuf_backend(llvmpipe);
 211    if (!llvmpipe->vbuf_backend)
 212       goto fail;
 213
 214    llvmpipe->vbuf = draw_vbuf_stage(llvmpipe->draw, llvmpipe->vbuf_backend);
 215    if (!llvmpipe->vbuf)
 216       goto fail;
 217
 218    draw_set_rasterize_stage(llvmpipe->draw, llvmpipe->vbuf);
 219    draw_set_render(llvmpipe->draw, llvmpipe->vbuf_backend);
 220
 221
 222
 223    /* plug in AA line/point stages */
 224    draw_install_aaline_stage(llvmpipe->draw, &llvmpipe->pipe);
 225    draw_install_aapoint_stage(llvmpipe->draw, &llvmpipe->pipe);
 226
 227 #if USE_DRAW_STAGE_PSTIPPLE
 228    /* Do polygon stipple w/ texture map + frag prog? */
 229    draw_install_pstipple_stage(llvmpipe->draw, &llvmpipe->pipe);
 230 #endif
 231
 232    lp_init_surface_functions(llvmpipe);
 233
 234    return &llvmpipe->pipe;
 235
 236  fail:
 237    llvmpipe_destroy(&llvmpipe->pipe);
 238    return NULL;
 239 }
 240