src/gallium/drivers/softpipe/sp_setup.h

   1 /**************************************************************************
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   3  * Copyright 2007 VMware, Inc.
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  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
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  27 #ifndef SP_SETUP_H
  28 #define SP_SETUP_H
  29
  30 struct setup_context;
  31 struct softpipe_context;
  32
  33 /**
  34  * Attribute interpolation mode
  35  */
  36 enum sp_interp_mode {
  37    SP_INTERP_POS,       /**< special case for frag position */
  38    SP_INTERP_CONSTANT,
  39    SP_INTERP_LINEAR,
  40    SP_INTERP_PERSPECTIVE
  41 };
  42
  43
  44 struct sp_setup_info {
  45    unsigned valid;
  46    struct {
  47       unsigned interp:8;      /**< SP_INTERP_X */
  48       int src_index:8;
  49    } attrib[PIPE_MAX_SHADER_OUTPUTS];
  50 };
  51
  52 void
  53 sp_setup_tri(struct setup_context *setup,
  54              const float (*v0)[4],
  55              const float (*v1)[4],
  56              const float (*v2)[4]);
  57
  58 void
  59 sp_setup_line(struct setup_context *setup,
  60            const float (*v0)[4],
  61            const float (*v1)[4]);
  62
  63 void
  64 sp_setup_point( struct setup_context *setup,
  65              const float (*v0)[4] );
  66
  67 static inline unsigned
  68 sp_clamp_viewport_idx(int idx)
  69 {
  70    return (PIPE_MAX_VIEWPORTS > idx && idx >= 0) ? idx : 0;
  71 }
  72
  73 struct setup_context *sp_setup_create_context( struct softpipe_context *softpipe );
  74 void sp_setup_prepare( struct setup_context *setup );
  75 void sp_setup_destroy_context( struct setup_context *setup );
  76
  77 #endif