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 "main/imports.h"
  33 #include "main/macros.h"
  34 #include "pipe/draw/draw_context.h"
  35 #include "pipe/p_defines.h"
  36 #include "sp_context.h"
  37 #include "sp_clear.h"
  38 #include "sp_region.h"
  39 #include "sp_state.h"
  40 #include "sp_surface.h"
  41 #include "sp_prim_setup.h"
  42
  43
  44 static void map_surfaces(struct softpipe_context *sp)
  45 {
  46    struct pipe_context *pipe = &sp->pipe;
  47    GLuint i;
  48
  49    for (i = 0; i < sp->framebuffer.num_cbufs; i++) {
  50       struct softpipe_surface *sps = softpipe_surface(sp->framebuffer.cbufs[i]);      pipe->region_map(pipe, sps->surface.region);
  51    }
  52
  53    if (sp->framebuffer.zbuf) {
  54       struct softpipe_surface *sps = softpipe_surface(sp->framebuffer.zbuf);
  55       pipe->region_map(pipe, sps->surface.region);
  56    }
  57
  58    /* XXX depth & stencil bufs */
  59 }
  60
  61
  62 static void unmap_surfaces(struct softpipe_context *sp)
  63 {
  64    struct pipe_context *pipe = &sp->pipe;
  65    GLuint i;
  66
  67    for (i = 0; i < sp->framebuffer.num_cbufs; i++) {
  68       struct softpipe_surface *sps = softpipe_surface(sp->framebuffer.cbufs[i]);
  69       pipe->region_unmap(pipe, sps->surface.region);
  70    }
  71
  72    if (sp->framebuffer.zbuf) {
  73       struct softpipe_surface *sps = softpipe_surface(sp->framebuffer.zbuf);
  74       pipe->region_unmap(pipe, sps->surface.region);
  75    }
  76    /* XXX depth & stencil bufs */
  77 }
  78
  79
  80 static void softpipe_destroy( struct pipe_context *pipe )
  81 {
  82    struct softpipe_context *softpipe = softpipe_context( pipe );
  83
  84    draw_destroy( softpipe->draw );
  85
  86    free( softpipe );
  87 }
  88
  89
  90 static void softpipe_draw_vb( struct pipe_context *pipe,
  91                              struct vertex_buffer *VB )
  92 {
  93    struct softpipe_context *softpipe = softpipe_context( pipe );
  94
  95    if (softpipe->dirty)
  96       softpipe_update_derived( softpipe );
  97
  98    /* XXX move mapping/unmapping to higher/coarser level? */
  99    map_surfaces(softpipe);
 100    draw_vb( softpipe->draw, VB );
 101    unmap_surfaces(softpipe);
 102 }
 103
 104
 105 static void softpipe_reset_occlusion_counter(struct pipe_context *pipe)
 106 {
 107    struct softpipe_context *softpipe = softpipe_context( pipe );
 108    softpipe->occlusion_counter = 0;
 109 }
 110
 111 /* XXX pipe param should be const */
 112 static GLuint softpipe_get_occlusion_counter(struct pipe_context *pipe)
 113 {
 114    struct softpipe_context *softpipe = softpipe_context( pipe );
 115    return softpipe->occlusion_counter;
 116 }
 117
 118
 119 struct pipe_context *softpipe_create( void )
 120 {
 121    struct softpipe_context *softpipe = CALLOC_STRUCT(softpipe_context);
 122
 123    softpipe->pipe.destroy = softpipe_destroy;
 124    softpipe->pipe.set_alpha_test_state = softpipe_set_alpha_test_state;
 125    softpipe->pipe.set_blend_color = softpipe_set_blend_color;
 126    softpipe->pipe.set_blend_state = softpipe_set_blend_state;
 127    softpipe->pipe.set_clip_state = softpipe_set_clip_state;
 128    softpipe->pipe.set_clear_color_state = softpipe_set_clear_color_state;
 129    softpipe->pipe.set_depth_state = softpipe_set_depth_test_state;
 130    softpipe->pipe.set_framebuffer_state = softpipe_set_framebuffer_state;
 131    softpipe->pipe.set_fs_state = softpipe_set_fs_state;
 132    softpipe->pipe.set_polygon_stipple = softpipe_set_polygon_stipple;
 133    softpipe->pipe.set_sampler_state = softpipe_set_sampler_state;
 134    softpipe->pipe.set_scissor_state = softpipe_set_scissor_state;
 135    softpipe->pipe.set_setup_state = softpipe_set_setup_state;
 136    softpipe->pipe.set_stencil_state = softpipe_set_stencil_state;
 137    softpipe->pipe.set_texture_state = softpipe_set_texture_state;
 138    softpipe->pipe.set_viewport_state = softpipe_set_viewport_state;
 139    softpipe->pipe.draw_vb = softpipe_draw_vb;
 140    softpipe->pipe.clear = softpipe_clear;
 141    softpipe->pipe.reset_occlusion_counter = softpipe_reset_occlusion_counter;
 142    softpipe->pipe.get_occlusion_counter = softpipe_get_occlusion_counter;
 143
 144    softpipe->quad.polygon_stipple = sp_quad_polygon_stipple_stage(softpipe);
 145    softpipe->quad.shade = sp_quad_shade_stage(softpipe);
 146    softpipe->quad.alpha_test = sp_quad_alpha_test_stage(softpipe);
 147    softpipe->quad.depth_test = sp_quad_depth_test_stage(softpipe);
 148    softpipe->quad.stencil_test = sp_quad_stencil_test_stage(softpipe);
 149    softpipe->quad.occlusion = sp_quad_occlusion_stage(softpipe);
 150    softpipe->quad.coverage = sp_quad_coverage_stage(softpipe);
 151    softpipe->quad.bufloop = sp_quad_bufloop_stage(softpipe);
 152    softpipe->quad.blend = sp_quad_blend_stage(softpipe);
 153    softpipe->quad.colormask = sp_quad_colormask_stage(softpipe);
 154    softpipe->quad.output = sp_quad_output_stage(softpipe);
 155
 156    /*
 157     * Create drawing context and plug our rendering stage into it.
 158     */
 159    softpipe->draw = draw_create();
 160    assert(softpipe->draw);
 161    draw_set_setup_stage(softpipe->draw, sp_draw_render_stage(softpipe));
 162
 163    sp_init_region_functions(softpipe);
 164    sp_init_surface_functions(softpipe);
 165
 166    /*
 167     * XXX we could plug GL selection/feedback into the drawing pipeline
 168     * by specifying a different setup/render stage.
 169     */
 170
 171    return &softpipe->pipe;
 172 }