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_POINT     0x10
  59 #define G_NEW_CLIP      0x20
  60 #define G_NEW_SCISSOR   0x40
  61 #define G_NEW_STIPPLE   0x80
  62 #define G_NEW_FRAMEBUFFER 0x100
  63 #define G_NEW_ALPHA_TEST  0x200
  64 #define G_NEW_DEPTH_TEST  0x400
  65 #define G_NEW_SAMPLER     0x800
  66 #define G_NEW_TEXTURE    0x1000
  67
  68
  69 #define PIPE_ATTRIB_MAX 32
  70
  71 struct softpipe_context {
  72    struct pipe_context pipe;
  73
  74
  75    /* The most recent drawing state as set by the driver:
  76     */
  77    struct pipe_alpha_test_state alpha_test;
  78    struct pipe_blend_state blend;
  79    struct pipe_blend_color blend_color;
  80    struct pipe_clear_color_state clear_color;
  81    struct pipe_clip_state clip;
  82    struct pipe_depth_state depth_test;
  83    struct pipe_framebuffer_state framebuffer;
  84    struct pipe_fs_state fs;
  85    struct pipe_poly_stipple poly_stipple;
  86    struct pipe_scissor_state scissor;
  87    struct pipe_sampler_state sampler[PIPE_MAX_SAMPLERS];
  88    struct pipe_setup_state setup;
  89    struct pipe_texture_object *texture[PIPE_MAX_SAMPLERS];
  90    struct pipe_viewport_state viewport;
  91    GLuint dirty;
  92
  93    /* Clip derived state:
  94     */
  95    GLfloat plane[12][4];
  96    GLuint nr_planes;
  97
  98    /* Setup derived state.  TODO: this should be passed in the program
  99     * tokens as parameters to DECL instructions.
 100     *
 101     * For now we just set colors to CONST on flatshade, textures to
 102     * perspective always and everything else to linear.
 103     */
 104    enum interp_mode interp[PIPE_ATTRIB_MAX];
 105
 106
 107    /* FS + setup derived state:
 108     */
 109    GLuint fp_attr_to_slot[PIPE_ATTRIB_MAX];
 110    GLuint vf_attr_to_slot[PIPE_ATTRIB_MAX];
 111    GLuint nr_attrs;
 112    GLuint nr_frag_attrs;
 113    GLuint attr_mask;
 114
 115    GLboolean need_z;
 116    GLboolean need_w;
 117
 118    /* Stipple derived state:
 119     */
 120    GLubyte stipple_masks[16][16];
 121
 122
 123    /* The software clipper/setup engine.
 124     */
 125    struct {
 126       struct prim_stage *setup;
 127       struct prim_stage *unfilled;
 128       struct prim_stage *twoside;
 129       struct prim_stage *clip;
 130       struct prim_stage *flatshade;
 131       struct prim_stage *offset;
 132       struct prim_stage *cull;
 133
 134       struct prim_stage *first;
 135
 136       GLenum prim;
 137       GLuint vertex_size;
 138    } prim;
 139
 140    /*
 141     * Software quad rendering pipeline
 142     */
 143    struct {
 144       struct quad_stage *shade;
 145       struct quad_stage *alpha_test;
 146       struct quad_stage *depth_test;
 147       struct quad_stage *blend;
 148       struct quad_stage *output;
 149
 150       struct quad_stage *first; /**< points to one of the above stages */
 151    } quad;
 152
 153    /* Temp kludge:
 154     */
 155    struct draw_context *draw;
 156 };
 157
 158
 159
 160
 161 static INLINE struct softpipe_context *
 162 softpipe_context( struct pipe_context *pipe )
 163 {
 164    return (struct softpipe_context *)pipe;
 165 }
 166
 167
 168 #endif /* SP_CONTEXT_H */