src/mesa/pipe/softpipe/sp_context.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 /* Author:
  29  *    Keith Whitwell <keith@tungstengraphics.com>
  30  */
  31
  32 #include "pipe/draw/draw_context.h"
  33 #include "pipe/p_defines.h"
  34 #include "pipe/p_util.h"
  35 #include "sp_clear.h"
  36 #include "sp_context.h"
  37 #include "sp_flush.h"
  38 #include "sp_prim_setup.h"
  39 #include "sp_region.h"
  40 #include "sp_state.h"
  41 #include "sp_surface.h"
  42 #include "sp_tex_layout.h"
  43 #include "sp_winsys.h"
  44
  45
  46
  47 /**
  48  * Return list of supported surface/texture formats.
  49  * If we find texture and drawable support differs, add a selector
  50  * parameter or another function.
  51  */
  52 static const unsigned *
  53 softpipe_supported_formats(struct pipe_context *pipe, unsigned *numFormats)
  54 {
  55 #if 0
  56    static const unsigned supported[] = {
  57       PIPE_FORMAT_U_R8_G8_B8_A8,
  58       PIPE_FORMAT_U_A8_R8_G8_B8,
  59       PIPE_FORMAT_U_R5_G6_B5,
  60       PIPE_FORMAT_U_L8,
  61       PIPE_FORMAT_U_A8,
  62       PIPE_FORMAT_U_I8,
  63       PIPE_FORMAT_U_L8_A8,
  64       PIPE_FORMAT_S_R16_G16_B16_A16,
  65       PIPE_FORMAT_YCBCR,
  66       PIPE_FORMAT_YCBCR_REV,
  67       PIPE_FORMAT_U_Z16,
  68       PIPE_FORMAT_U_Z32,
  69       PIPE_FORMAT_F_Z32,
  70       PIPE_FORMAT_S8_Z24,
  71       PIPE_FORMAT_U_S8
  72    };
  73
  74    *numFormats = sizeof(supported)/sizeof(supported[0]);
  75    return supported;
  76 #else
  77    struct softpipe_context *softpipe = softpipe_context( pipe );
  78    return softpipe->winsys->supported_formats( softpipe->winsys, numFormats );
  79 #endif
  80 }
  81
  82
  83 /** XXX remove these? */
  84 #define MAX_TEXTURE_LEVELS 11
  85 #define MAX_TEXTURE_RECT_SIZE 2048
  86 #define MAX_3D_TEXTURE_LEVELS 8
  87
  88 static void
  89 softpipe_max_texture_size(struct pipe_context *pipe, unsigned textureType,
  90                           unsigned *maxWidth, unsigned *maxHeight,
  91                           unsigned *maxDepth)
  92 {
  93    switch (textureType) {
  94    case PIPE_TEXTURE_1D:
  95       *maxWidth = 1 << (MAX_TEXTURE_LEVELS - 1);
  96       break;
  97    case PIPE_TEXTURE_2D:
  98       *maxWidth =
  99       *maxHeight = 1 << (MAX_TEXTURE_LEVELS - 1);
 100       break;
 101    case PIPE_TEXTURE_3D:
 102       *maxWidth =
 103       *maxHeight =
 104       *maxDepth = 1 << (MAX_3D_TEXTURE_LEVELS - 1);
 105       break;
 106    case PIPE_TEXTURE_CUBE:
 107       *maxWidth =
 108       *maxHeight = MAX_TEXTURE_RECT_SIZE;
 109       break;
 110    default:
 111       assert(0);
 112    }
 113 }
 114
 115
 116 void
 117 softpipe_map_surfaces(struct softpipe_context *sp)
 118 {
 119    struct pipe_context *pipe = &sp->pipe;
 120    unsigned i;
 121
 122    for (i = 0; i < sp->framebuffer.num_cbufs; i++) {
 123       struct softpipe_surface *sps = softpipe_surface(sp->framebuffer.cbufs[i]);
 124       if (sps->surface.region)
 125          pipe->region_map(pipe, sps->surface.region);
 126    }
 127
 128    if (sp->framebuffer.zbuf) {
 129       struct softpipe_surface *sps = softpipe_surface(sp->framebuffer.zbuf);
 130       if (sps->surface.region)
 131          pipe->region_map(pipe, sps->surface.region);
 132    }
 133
 134    if (sp->framebuffer.sbuf) {
 135       struct softpipe_surface *sps = softpipe_surface(sp->framebuffer.sbuf);
 136       if (sps->surface.region)
 137          pipe->region_map(pipe, sps->surface.region);
 138    }
 139
 140    /* textures */
 141    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 142       struct pipe_mipmap_tree *mt = sp->texture[i];
 143       if (mt) {
 144          pipe->region_map(pipe, mt->region);
 145       }
 146    }
 147
 148    /* XXX depth & stencil bufs */
 149 }
 150
 151
 152 void
 153 softpipe_unmap_surfaces(struct softpipe_context *sp)
 154 {
 155    struct pipe_context *pipe = &sp->pipe;
 156    unsigned i;
 157
 158    for (i = 0; i < sp->framebuffer.num_cbufs; i++) {
 159       struct softpipe_surface *sps = softpipe_surface(sp->framebuffer.cbufs[i]);
 160       if (sps->surface.region)
 161          pipe->region_unmap(pipe, sps->surface.region);
 162    }
 163
 164    if (sp->framebuffer.zbuf) {
 165       struct softpipe_surface *sps = softpipe_surface(sp->framebuffer.zbuf);
 166       if (sps->surface.region)
 167          pipe->region_unmap(pipe, sps->surface.region);
 168    }
 169
 170    if (sp->framebuffer.sbuf) {
 171       struct softpipe_surface *sps = softpipe_surface(sp->framebuffer.sbuf);
 172       if (sps->surface.region)
 173          pipe->region_unmap(pipe, sps->surface.region);
 174    }
 175
 176    /* textures */
 177    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 178       struct pipe_mipmap_tree *mt = sp->texture[i];
 179       if (mt) {
 180          pipe->region_unmap(pipe, mt->region);
 181       }
 182    }
 183
 184    /* XXX depth & stencil bufs */
 185 }
 186
 187
 188 static void softpipe_destroy( struct pipe_context *pipe )
 189 {
 190    struct softpipe_context *softpipe = softpipe_context( pipe );
 191
 192    draw_destroy( softpipe->draw );
 193
 194    free( softpipe );
 195 }
 196
 197
 198 static void softpipe_draw_vb( struct pipe_context *pipe,
 199                              struct vertex_buffer *VB )
 200 {
 201    struct softpipe_context *softpipe = softpipe_context( pipe );
 202
 203    if (softpipe->dirty)
 204       softpipe_update_derived( softpipe );
 205
 206    /* XXX move mapping/unmapping to higher/coarser level? */
 207    softpipe_map_surfaces(softpipe);
 208    draw_vb( softpipe->draw, VB );
 209    softpipe_unmap_surfaces(softpipe);
 210 }
 211
 212
 213 static void
 214 softpipe_draw_vertices(struct pipe_context *pipe,
 215                        unsigned mode,
 216                        unsigned numVertex, const float *verts,
 217                        unsigned numAttribs, const unsigned attribs[])
 218 {
 219    struct softpipe_context *softpipe = softpipe_context( pipe );
 220
 221    if (softpipe->dirty)
 222       softpipe_update_derived( softpipe );
 223
 224    /* XXX move mapping/unmapping to higher/coarser level? */
 225    softpipe_map_surfaces(softpipe);
 226    draw_vertices(softpipe->draw, mode, numVertex, verts, numAttribs, attribs);
 227    softpipe_unmap_surfaces(softpipe);
 228 }
 229
 230
 231
 232 static void softpipe_reset_occlusion_counter(struct pipe_context *pipe)
 233 {
 234    struct softpipe_context *softpipe = softpipe_context( pipe );
 235    softpipe->occlusion_counter = 0;
 236 }
 237
 238 /* XXX pipe param should be const */
 239 static unsigned softpipe_get_occlusion_counter(struct pipe_context *pipe)
 240 {
 241    struct softpipe_context *softpipe = softpipe_context( pipe );
 242    return softpipe->occlusion_counter;
 243 }
 244
 245 static const char *softpipe_get_name( struct pipe_context *pipe )
 246 {
 247    return "softpipe";
 248 }
 249
 250 static const char *softpipe_get_vendor( struct pipe_context *pipe )
 251 {
 252    return "Tungsten Graphics, Inc.";
 253 }
 254
 255
 256 struct pipe_context *softpipe_create( struct pipe_winsys *pipe_winsys,
 257                                       struct softpipe_winsys *softpipe_winsys )
 258 {
 259    struct softpipe_context *softpipe = CALLOC_STRUCT(softpipe_context);
 260
 261    softpipe->pipe.winsys = pipe_winsys;
 262    softpipe->pipe.destroy = softpipe_destroy;
 263
 264    /* queries */
 265    softpipe->pipe.supported_formats = softpipe_supported_formats;
 266    softpipe->pipe.max_texture_size = softpipe_max_texture_size;
 267
 268    /* state setters */
 269    softpipe->pipe.set_alpha_test_state = softpipe_set_alpha_test_state;
 270    softpipe->pipe.set_blend_color = softpipe_set_blend_color;
 271    softpipe->pipe.set_blend_state = softpipe_set_blend_state;
 272    softpipe->pipe.set_clip_state = softpipe_set_clip_state;
 273    softpipe->pipe.set_clear_color_state = softpipe_set_clear_color_state;
 274    softpipe->pipe.set_depth_state = softpipe_set_depth_test_state;
 275    softpipe->pipe.set_framebuffer_state = softpipe_set_framebuffer_state;
 276    softpipe->pipe.set_fs_state = softpipe_set_fs_state;
 277    softpipe->pipe.set_vs_state = softpipe_set_vs_state;
 278    softpipe->pipe.set_polygon_stipple = softpipe_set_polygon_stipple;
 279    softpipe->pipe.set_sampler_state = softpipe_set_sampler_state;
 280    softpipe->pipe.set_scissor_state = softpipe_set_scissor_state;
 281    softpipe->pipe.set_setup_state = softpipe_set_setup_state;
 282    softpipe->pipe.set_stencil_state = softpipe_set_stencil_state;
 283    softpipe->pipe.set_texture_state = softpipe_set_texture_state;
 284    softpipe->pipe.set_viewport_state = softpipe_set_viewport_state;
 285    softpipe->pipe.set_vertex_buffer = softpipe_set_vertex_buffer;
 286    softpipe->pipe.set_vertex_element = softpipe_set_vertex_element;
 287
 288    softpipe->pipe.draw_vb = softpipe_draw_vb;
 289    softpipe->pipe.draw_vertices = softpipe_draw_vertices;
 290    softpipe->pipe.draw_arrays = softpipe_draw_arrays;
 291
 292    softpipe->pipe.clear = softpipe_clear;
 293    softpipe->pipe.flush = softpipe_flush;
 294    softpipe->pipe.reset_occlusion_counter = softpipe_reset_occlusion_counter;
 295    softpipe->pipe.get_occlusion_counter = softpipe_get_occlusion_counter;
 296    softpipe->pipe.get_name = softpipe_get_name;
 297    softpipe->pipe.get_vendor = softpipe_get_vendor;
 298
 299    /* textures */
 300    softpipe->pipe.mipmap_tree_layout = softpipe_mipmap_tree_layout;
 301    softpipe->pipe.get_tex_surface = softpipe_get_tex_surface;
 302
 303    /* setup quad rendering stages */
 304    softpipe->quad.polygon_stipple = sp_quad_polygon_stipple_stage(softpipe);
 305    softpipe->quad.shade = sp_quad_shade_stage(softpipe);
 306    softpipe->quad.alpha_test = sp_quad_alpha_test_stage(softpipe);
 307    softpipe->quad.depth_test = sp_quad_depth_test_stage(softpipe);
 308    softpipe->quad.stencil_test = sp_quad_stencil_test_stage(softpipe);
 309    softpipe->quad.occlusion = sp_quad_occlusion_stage(softpipe);
 310    softpipe->quad.coverage = sp_quad_coverage_stage(softpipe);
 311    softpipe->quad.bufloop = sp_quad_bufloop_stage(softpipe);
 312    softpipe->quad.blend = sp_quad_blend_stage(softpipe);
 313    softpipe->quad.colormask = sp_quad_colormask_stage(softpipe);
 314    softpipe->quad.output = sp_quad_output_stage(softpipe);
 315
 316    softpipe->winsys = softpipe_winsys;
 317
 318    /*
 319     * Create drawing context and plug our rendering stage into it.
 320     */
 321    softpipe->draw = draw_create();
 322    assert(softpipe->draw);
 323    draw_set_setup_stage(softpipe->draw, sp_draw_render_stage(softpipe));
 324
 325    draw_set_vertex_array_info(softpipe->draw,
 326                               softpipe->vertex_buffer,
 327                               softpipe->vertex_element);
 328
 329    sp_init_region_functions(softpipe);
 330    sp_init_surface_functions(softpipe);
 331
 332    /*
 333     * XXX we could plug GL selection/feedback into the drawing pipeline
 334     * by specifying a different setup/render stage.
 335     */
 336
 337    return &softpipe->pipe;
 338 }