src/mesa/state_tracker/st_context.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 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 #ifndef ST_CONTEXT_H
  29 #define ST_CONTEXT_H
  30
  31 #include "mtypes.h"
  32 #include "pipe/p_state.h"
  33
  34
  35 struct st_context;
  36 struct st_region;
  37 struct st_texture_object;
  38 struct st_texture_image;
  39 struct st_fragment_program;
  40
  41 #define ST_NEW_MESA                    0x1 /* Mesa state has changed */
  42 #define ST_NEW_FRAGMENT_PROGRAM        0x2
  43
  44 struct st_state_flags {
  45    GLuint mesa;
  46    GLuint st;
  47 };
  48
  49 struct st_tracked_state {
  50    struct st_state_flags dirty;
  51    void (*update)( struct st_context *st );
  52 };
  53
  54
  55
  56
  57 struct st_context
  58 {
  59    GLcontext *ctx;
  60
  61    struct pipe_context *pipe;
  62
  63    /* Eventually will use a cache to feed the pipe with
  64     * create/bind/delete calls to constant state objects.  Not yet
  65     * though, we just shove random objects across the interface.
  66     */
  67    struct {
  68       struct pipe_framebuffer_state framebuffer;
  69       struct pipe_viewport     viewport;
  70       struct pipe_setup_state  setup;
  71       struct pipe_fs_state     fs;
  72       struct pipe_alpha_test_state  alpha_test;
  73       struct pipe_blend_state  blend;
  74       struct pipe_clip_state   clip;
  75       struct pipe_depth_state  depth;
  76       struct pipe_point_state  point;
  77       struct pipe_scissor_rect scissor;
  78       struct pipe_poly_stipple poly_stipple;
  79       struct pipe_stencil_state stencil;
  80    } state;
  81
  82    struct {
  83       struct st_tracked_state tracked_state;
  84    } constants;
  85
  86    struct {
  87       struct gl_fragment_program *fragment_program;
  88    } cb;
  89
  90    /* State to be validated:
  91     */
  92    struct st_tracked_state **atoms;
  93    GLuint nr_atoms;
  94
  95    struct st_state_flags dirty;
  96
  97    /* Counter to track program string changes:
  98     */
  99    GLuint program_id;
 100
 101    GLfloat polygon_offset_scale; /* ?? */
 102 };
 103
 104
 105 /* Need this so that we can implement Mesa callbacks in this module.
 106  */
 107 static INLINE struct st_context *st_context(GLcontext *ctx)
 108 {
 109    return ctx->st;
 110 }
 111
 112
 113 #endif