src/gallium/drivers/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 "pipe/p_context.h"
  35 #include "pipe/p_defines.h"
  36
  37 #include "draw/draw_vertex.h"
  38
  39 #include "sp_quad.h"
  40
  41
  42 struct softpipe_winsys;
  43 struct softpipe_vbuf_render;
  44 struct draw_context;
  45 struct draw_stage;
  46 struct softpipe_tile_cache;
  47 struct sp_fragment_shader;
  48 struct sp_vertex_shader;
  49
  50
  51 struct softpipe_context {
  52    struct pipe_context pipe;  /**< base class */
  53    struct softpipe_winsys *winsys;      /**< window system interface */
  54
  55
  56    /* The most recent drawing state as set by the driver:
  57     */
  58    const struct pipe_blend_state   *blend;
  59    const struct pipe_sampler_state *sampler[PIPE_MAX_SAMPLERS];
  60    const struct pipe_depth_stencil_alpha_state   *depth_stencil;
  61    const struct pipe_rasterizer_state *rasterizer;
  62    const struct sp_fragment_shader *fs;
  63    const struct sp_vertex_shader *vs;
  64
  65    struct pipe_blend_color blend_color;
  66    struct pipe_clip_state clip;
  67    struct pipe_constant_buffer constants[2];
  68    struct pipe_framebuffer_state framebuffer;
  69    struct pipe_poly_stipple poly_stipple;
  70    struct pipe_scissor_state scissor;
  71    struct softpipe_texture *texture[PIPE_MAX_SAMPLERS];
  72    struct pipe_viewport_state viewport;
  73    struct pipe_vertex_buffer vertex_buffer[PIPE_ATTRIB_MAX];
  74    struct pipe_vertex_element vertex_element[PIPE_ATTRIB_MAX];
  75    unsigned dirty;
  76
  77    /* Counter for occlusion queries.  Note this supports overlapping
  78     * queries.
  79     */
  80    uint64 occlusion_count;
  81
  82    /*
  83     * Mapped vertex buffers
  84     */
  85    ubyte *mapped_vbuffer[PIPE_ATTRIB_MAX];
  86
  87    /** Mapped constant buffers */
  88    void *mapped_constants[PIPE_SHADER_TYPES];
  89
  90    /** Vertex format */
  91    struct vertex_info vertex_info;
  92    struct vertex_info vertex_info_vbuf;
  93
  94    int psize_slot;
  95
  96 #if 0
  97    /* Stipple derived state:
  98     */
  99    ubyte stipple_masks[16][16];
 100 #endif
 101
 102    /** Derived from scissor and surface bounds: */
 103    struct pipe_scissor_state cliprect;
 104
 105    unsigned line_stipple_counter;
 106
 107    /** Software quad rendering pipeline */
 108    struct {
 109       struct quad_stage *polygon_stipple;
 110       struct quad_stage *earlyz;
 111       struct quad_stage *shade;
 112       struct quad_stage *alpha_test;
 113       struct quad_stage *stencil_test;
 114       struct quad_stage *depth_test;
 115       struct quad_stage *occlusion;
 116       struct quad_stage *coverage;
 117       struct quad_stage *bufloop;
 118       struct quad_stage *blend;
 119       struct quad_stage *colormask;
 120       struct quad_stage *output;
 121
 122       struct quad_stage *first; /**< points to one of the above stages */
 123    } quad;
 124
 125    /** The primitive drawing context */
 126    struct draw_context *draw;
 127    struct draw_stage *setup;
 128    struct draw_stage *vbuf;
 129    struct softpipe_vbuf_render *vbuf_render;
 130
 131    uint current_cbuf;      /**< current color buffer being written to */
 132
 133    struct softpipe_tile_cache *cbuf_cache[PIPE_MAX_COLOR_BUFS];
 134    struct softpipe_tile_cache *zsbuf_cache;
 135
 136    struct softpipe_tile_cache *tex_cache[PIPE_MAX_SAMPLERS];
 137
 138    int use_sse : 1;
 139    int dump_fs : 1;
 140 };
 141
 142
 143
 144
 145 static INLINE struct softpipe_context *
 146 softpipe_context( struct pipe_context *pipe )
 147 {
 148    return (struct softpipe_context *)pipe;
 149 }
 150
 151
 152 #endif /* SP_CONTEXT_H */