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