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 /**
  43  * This is a temporary variable for testing draw-stage polygon stipple.
  44  * If zero, do stipple in sp_quad_stipple.c
  45  */
  46 #define USE_DRAW_STAGE_PSTIPPLE 1
  47
  48 /* Number of threads working on individual quads.
  49  * Setting to 1 disables this feature.
  50  */
  51 #define SP_NUM_QUAD_THREADS 1
  52
  53 struct softpipe_winsys;
  54 struct softpipe_vbuf_render;
  55 struct draw_context;
  56 struct draw_stage;
  57 struct softpipe_tile_cache;
  58 struct sp_fragment_shader;
  59 struct sp_vertex_shader;
  60
  61
  62 struct softpipe_context {
  63    struct pipe_context pipe;  /**< base class */
  64
  65    /* The most recent drawing state as set by the driver:
  66     */
  67    const struct pipe_blend_state   *blend;
  68    const struct pipe_sampler_state *sampler[PIPE_MAX_SAMPLERS];
  69    const struct pipe_depth_stencil_alpha_state   *depth_stencil;
  70    const struct pipe_rasterizer_state *rasterizer;
  71    const struct sp_fragment_shader *fs;
  72    const struct sp_vertex_shader *vs;
  73
  74    struct pipe_blend_color blend_color;
  75    struct pipe_clip_state clip;
  76    struct pipe_constant_buffer constants[PIPE_SHADER_TYPES];
  77    struct pipe_framebuffer_state framebuffer;
  78    struct pipe_poly_stipple poly_stipple;
  79    struct pipe_scissor_state scissor;
  80    struct pipe_texture *texture[PIPE_MAX_SAMPLERS];
  81    struct pipe_viewport_state viewport;
  82    struct pipe_vertex_buffer vertex_buffer[PIPE_MAX_ATTRIBS];
  83    struct pipe_vertex_element vertex_element[PIPE_MAX_ATTRIBS];
  84    unsigned dirty;
  85
  86    unsigned num_samplers;
  87    unsigned num_textures;
  88    unsigned num_vertex_elements;
  89    unsigned num_vertex_buffers;
  90
  91    boolean no_rast;
  92
  93    /* Counter for occlusion queries.  Note this supports overlapping
  94     * queries.
  95     */
  96    uint64 occlusion_count;
  97
  98    /*
  99     * Mapped vertex buffers
 100     */
 101    ubyte *mapped_vbuffer[PIPE_MAX_ATTRIBS];
 102
 103    /** Mapped constant buffers */
 104    void *mapped_constants[PIPE_SHADER_TYPES];
 105
 106    /** Vertex format */
 107    struct vertex_info vertex_info;
 108    struct vertex_info vertex_info_vbuf;
 109
 110    int psize_slot;
 111
 112    unsigned reduced_api_prim;  /**< PIPE_PRIM_POINTS, _LINES or _TRIANGLES */
 113
 114 #if 0
 115    /* Stipple derived state:
 116     */
 117    ubyte stipple_masks[16][16];
 118 #endif
 119
 120    /** Derived from scissor and surface bounds: */
 121    struct pipe_scissor_state cliprect;
 122
 123    unsigned line_stipple_counter;
 124
 125    /** Software quad rendering pipeline */
 126    struct {
 127       struct quad_stage *polygon_stipple;
 128       struct quad_stage *earlyz;
 129       struct quad_stage *shade;
 130       struct quad_stage *alpha_test;
 131       struct quad_stage *stencil_test;
 132       struct quad_stage *depth_test;
 133       struct quad_stage *occlusion;
 134       struct quad_stage *coverage;
 135       struct quad_stage *blend;
 136       struct quad_stage *colormask;
 137       struct quad_stage *output;
 138
 139       struct quad_stage *first; /**< points to one of the above stages */
 140    } quad[SP_NUM_QUAD_THREADS];
 141
 142    /** The primitive drawing context */
 143    struct draw_context *draw;
 144    struct draw_stage *setup;
 145    struct draw_stage *vbuf;
 146    struct softpipe_vbuf_render *vbuf_render;
 147
 148    struct softpipe_tile_cache *cbuf_cache[PIPE_MAX_COLOR_BUFS];
 149    struct softpipe_tile_cache *zsbuf_cache;
 150
 151    struct softpipe_tile_cache *tex_cache[PIPE_MAX_SAMPLERS];
 152
 153    int use_sse : 1;
 154    int dump_fs : 1;
 155 };
 156
 157
 158 static INLINE struct softpipe_context *
 159 softpipe_context( struct pipe_context *pipe )
 160 {
 161    return (struct softpipe_context *)pipe;
 162 }
 163
 164 #endif /* SP_CONTEXT_H */
 165