src/mesa/pipe/softpipe/sp_context.h

   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 /* Authors:  Keith Whitwell <keith@tungstengraphics.com>
  29  */
  30
  31 #ifndef SP_CONTEXT_H
  32 #define SP_CONTEXT_H
  33
  34 #include "glheader.h"
  35
  36 #include "pipe/p_state.h"
  37 #include "pipe/p_context.h"
  38
  39 #include "sp_quad.h"
  40
  41
  42 struct softpipe_surface;
  43 struct draw_context;
  44 struct prim_stage;
  45
  46
  47 enum interp_mode {
  48    INTERP_CONSTANT,
  49    INTERP_LINEAR,
  50    INTERP_PERSPECTIVE
  51 };
  52
  53
  54 #define G_NEW_VIEWPORT  0x1
  55 #define G_NEW_SETUP     0x2
  56 #define G_NEW_FS        0x4
  57 #define G_NEW_BLEND     0x8
  58 #define G_NEW_CLIP      0x20
  59 #define G_NEW_SCISSOR   0x40
  60 #define G_NEW_STIPPLE   0x80
  61 #define G_NEW_FRAMEBUFFER 0x100
  62 #define G_NEW_ALPHA_TEST  0x200
  63 #define G_NEW_DEPTH_TEST  0x400
  64 #define G_NEW_SAMPLER     0x800
  65 #define G_NEW_TEXTURE    0x1000
  66
  67
  68 struct softpipe_context {
  69    struct pipe_context pipe;
  70
  71    /* The most recent drawing state as set by the driver:
  72     */
  73    struct pipe_alpha_test_state alpha_test;
  74    struct pipe_blend_state blend;
  75    struct pipe_blend_color blend_color;
  76    struct pipe_clear_color_state clear_color;
  77    struct pipe_clip_state clip;
  78    struct pipe_depth_state depth_test;
  79    struct pipe_framebuffer_state framebuffer;
  80    struct pipe_fs_state fs;
  81    struct pipe_poly_stipple poly_stipple;
  82    struct pipe_scissor_state scissor;
  83    struct pipe_sampler_state sampler[PIPE_MAX_SAMPLERS];
  84    struct pipe_setup_state setup;
  85    struct pipe_texture_object *texture[PIPE_MAX_SAMPLERS];
  86    struct pipe_viewport_state viewport;
  87    GLuint dirty;
  88
  89    /* Setup derived state.  TODO: this should be passed in the program
  90     * tokens as parameters to DECL instructions.
  91     *
  92     * For now we just set colors to CONST on flatshade, textures to
  93     * perspective always and everything else to linear.
  94     */
  95    enum interp_mode interp[PIPE_ATTRIB_MAX];
  96
  97
  98    /* FS + setup derived state:
  99     */
 100    GLuint fp_attr_to_slot[PIPE_ATTRIB_MAX];
 101    GLuint vf_attr_to_slot[PIPE_ATTRIB_MAX];
 102    GLuint nr_attrs;
 103    GLuint nr_frag_attrs;
 104    GLuint attr_mask;
 105
 106    GLboolean need_z;
 107    GLboolean need_w;
 108
 109    /* Stipple derived state:
 110     */
 111    GLubyte stipple_masks[16][16];
 112
 113    /*
 114     * Software quad rendering pipeline
 115     */
 116    struct {
 117       struct quad_stage *shade;
 118       struct quad_stage *alpha_test;
 119       struct quad_stage *depth_test;
 120       struct quad_stage *blend;
 121       struct quad_stage *output;
 122
 123       struct quad_stage *first; /**< points to one of the above stages */
 124    } quad;
 125
 126    /* Temp kludge:
 127     */
 128    struct draw_context *draw;
 129 };
 130
 131
 132
 133
 134 static INLINE struct softpipe_context *
 135 softpipe_context( struct pipe_context *pipe )
 136 {
 137    return (struct softpipe_context *)pipe;
 138 }
 139
 140
 141 #endif /* SP_CONTEXT_H */