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 "pipe/p_state.h"
  35 #include "pipe/p_context.h"
  36 #include "pipe/p_defines.h"
  37
  38 #include "pipe/draw/draw_vertex.h"
  39
  40 #include "sp_quad.h"
  41
  42
  43 struct softpipe_surface;
  44 struct softpipe_winsys;
  45 struct draw_context;
  46 struct draw_stage;
  47
  48
  49 #define SP_NEW_VIEWPORT      0x1
  50 #define SP_NEW_RASTERIZER    0x2
  51 #define SP_NEW_FS            0x4
  52 #define SP_NEW_BLEND         0x8
  53 #define SP_NEW_CLIP          0x10
  54 #define SP_NEW_SCISSOR       0x20
  55 #define SP_NEW_STIPPLE       0x40
  56 #define SP_NEW_FRAMEBUFFER   0x80
  57 #define SP_NEW_ALPHA_TEST    0x100
  58 #define SP_NEW_DEPTH_STENCIL 0x200
  59 #define SP_NEW_SAMPLER       0x400
  60 #define SP_NEW_TEXTURE       0x800
  61 #define SP_NEW_VERTEX        0x1000
  62 #define SP_NEW_VS            0x2000
  63 #define SP_NEW_CONSTANTS     0x4000
  64
  65
  66 struct softpipe_context {
  67    struct pipe_context pipe;  /**< base class */
  68    struct softpipe_winsys *winsys;      /**< window system interface */
  69
  70
  71    /* The most recent drawing state as set by the driver:
  72     */
  73    const struct pipe_blend_state   *blend;
  74    const struct pipe_sampler_state *sampler[PIPE_MAX_SAMPLERS];
  75    const struct pipe_depth_stencil_state   *depth_stencil;
  76    const struct pipe_rasterizer_state *rasterizer;
  77    const struct pipe_shader_state *fs;
  78    const struct pipe_shader_state *vs;
  79
  80    struct pipe_alpha_test_state alpha_test;
  81    struct pipe_blend_color blend_color;
  82    struct pipe_clear_color_state clear_color;
  83    struct pipe_clip_state clip;
  84    struct pipe_constant_buffer constants[2];
  85    struct pipe_feedback_state feedback;
  86    struct pipe_framebuffer_state framebuffer;
  87    struct pipe_poly_stipple poly_stipple;
  88    struct pipe_scissor_state scissor;
  89    struct pipe_mipmap_tree *texture[PIPE_MAX_SAMPLERS];
  90    struct pipe_viewport_state viewport;
  91    struct pipe_vertex_buffer vertex_buffer[PIPE_ATTRIB_MAX];
  92    struct pipe_vertex_element vertex_element[PIPE_ATTRIB_MAX];
  93    unsigned dirty;
  94
  95    /*
  96     * Active queries
  97     */
  98    struct pipe_query_object *queries[PIPE_QUERY_TYPES];
  99
 100    /*
 101     * Mapped vertex buffers
 102     */
 103    ubyte *mapped_vbuffer[PIPE_ATTRIB_MAX];
 104
 105    /** Mapped constant buffers */
 106    void *mapped_constants[PIPE_SHADER_TYPES];
 107
 108    /** Vertex format */
 109    struct vertex_info vertex_info;
 110    unsigned attr_mask;
 111    unsigned nr_frag_attrs;  /**< number of active fragment attribs */
 112    boolean need_z;  /**< produce quad/fragment Z values? */
 113    boolean need_w;  /**< produce quad/fragment W values? */
 114    int psize_slot;
 115
 116    /** Feedback buffers */
 117    struct pipe_feedback_buffer feedback_buffer[PIPE_MAX_FEEDBACK_ATTRIBS];
 118
 119 #if 0
 120    /* Stipple derived state:
 121     */
 122    ubyte stipple_masks[16][16];
 123 #endif
 124
 125    /** Derived from scissor and surface bounds: */
 126    struct pipe_scissor_state cliprect;
 127
 128    unsigned line_stipple_counter;
 129
 130    /** Software quad rendering pipeline */
 131    struct {
 132       struct quad_stage *polygon_stipple;
 133       struct quad_stage *shade;
 134       struct quad_stage *alpha_test;
 135       struct quad_stage *stencil_test;
 136       struct quad_stage *depth_test;
 137       struct quad_stage *occlusion;
 138       struct quad_stage *coverage;
 139       struct quad_stage *bufloop;
 140       struct quad_stage *blend;
 141       struct quad_stage *colormask;
 142       struct quad_stage *output;
 143
 144       struct quad_stage *first; /**< points to one of the above stages */
 145    } quad;
 146
 147    /** The primitive drawing context */
 148    struct draw_context *draw;
 149
 150    struct pipe_surface *cbuf;      /**< current color buffer (one of cbufs) */
 151 };
 152
 153
 154
 155
 156 static INLINE struct softpipe_context *
 157 softpipe_context( struct pipe_context *pipe )
 158 {
 159    return (struct softpipe_context *)pipe;
 160 }
 161
 162
 163 #endif /* SP_CONTEXT_H */