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 "imports.h"
  33 #include "macros.h"
  34
  35 #include "sp_context.h"
  36 #include "sp_clear.h"
  37 #include "sp_prim.h"
  38 #include "sp_state.h"
  39 #include "sp_draw.h"
  40
  41 static void softpipe_destroy( struct pipe_context *pipe )
  42 {
  43    struct softpipe_context *softpipe = softpipe_context( pipe );
  44
  45    draw_destroy( softpipe->draw );
  46
  47    FREE( softpipe );
  48 }
  49
  50
  51 static void softpipe_draw_vb( struct pipe_context *pipe,
  52                              struct vertex_buffer *VB )
  53 {
  54    struct softpipe_context *softpipe = softpipe_context( pipe );
  55
  56    if (softpipe->dirty)
  57       softpipe_update_derived( softpipe );
  58
  59    draw_vb( softpipe->draw, VB );
  60 }
  61
  62 struct pipe_context *softpipe_create( void )
  63 {
  64    struct softpipe_context *softpipe = CALLOC_STRUCT(softpipe_context);
  65
  66    softpipe->pipe.destroy = softpipe_destroy;
  67    softpipe->pipe.set_framebuffer_state = softpipe_set_framebuffer_state;
  68    softpipe->pipe.set_blend_state = softpipe_set_blend_state;
  69    softpipe->pipe.set_clip_state = softpipe_set_clip_state;
  70    softpipe->pipe.set_clear_color_state = softpipe_set_clear_color_state;
  71    softpipe->pipe.set_point_state = softpipe_set_point_state;
  72    softpipe->pipe.set_viewport = softpipe_set_viewport;
  73    softpipe->pipe.set_setup_state = softpipe_set_setup_state;
  74    softpipe->pipe.set_scissor_rect = softpipe_set_scissor_rect;
  75    softpipe->pipe.set_fs_state = softpipe_set_fs_state;
  76    softpipe->pipe.set_polygon_stipple = softpipe_set_polygon_stipple;
  77    softpipe->pipe.draw_vb = softpipe_draw_vb;
  78    softpipe->pipe.clear = softpipe_clear;
  79
  80
  81    softpipe->prim.setup     = prim_setup( softpipe );
  82    softpipe->prim.unfilled  = prim_unfilled( softpipe );
  83    softpipe->prim.twoside   = prim_twoside( softpipe );
  84    softpipe->prim.offset    = prim_offset( softpipe );
  85    softpipe->prim.clip      = prim_clip( softpipe );
  86    softpipe->prim.flatshade = prim_flatshade( softpipe );
  87    softpipe->prim.cull      = prim_cull( softpipe );
  88
  89    softpipe->quad.blend = sp_quad_blend_stage(softpipe);
  90    softpipe->quad.shade = sp_quad_shade_stage(softpipe);
  91    softpipe->quad.output = sp_quad_output_stage(softpipe);
  92
  93    softpipe->draw = draw_create( softpipe );
  94
  95    ASSIGN_4V( softpipe->plane[0], -1,  0,  0, 1 );
  96    ASSIGN_4V( softpipe->plane[1],  1,  0,  0, 1 );
  97    ASSIGN_4V( softpipe->plane[2],  0, -1,  0, 1 );
  98    ASSIGN_4V( softpipe->plane[3],  0,  1,  0, 1 );
  99    ASSIGN_4V( softpipe->plane[4],  0,  0,  1, 1 ); /* yes these are correct */
 100    ASSIGN_4V( softpipe->plane[5],  0,  0, -1, 1 ); /* mesa's a bit wonky */
 101    softpipe->nr_planes = 6;
 102
 103    return &softpipe->pipe;
 104 }
 105
 106
 107
 108
 109
 110
 111 #define MAX_VERTEX_SIZE ((2 + FRAG_ATTRIB_MAX) * 4 * sizeof(GLfloat))
 112
 113 void prim_alloc_tmps( struct prim_stage *stage, GLuint nr )
 114 {
 115    stage->nr_tmps = nr;
 116
 117    if (nr) {
 118       GLubyte *store = MALLOC(MAX_VERTEX_SIZE * nr);
 119       GLuint i;
 120
 121       stage->tmp = MALLOC(sizeof(struct vertex_header *) * nr);
 122
 123       for (i = 0; i < nr; i++)
 124          stage->tmp[i] = (struct vertex_header *)(store + i * MAX_VERTEX_SIZE);
 125    }
 126 }
 127
 128 void prim_free_tmps( struct prim_stage *stage )
 129 {
 130    if (stage->tmp) {
 131       FREE(stage->tmp[0]);
 132       FREE(stage->tmp);
 133    }
 134 }
 135
 136
 137
 138
 139