brw_context.h

Mesa is an open-source implementation of the OpenGL specification - a system for rendering interacti

#define CACHE_NEW_VS_UNIT                (1<<BRW_VS_UNIT)
#define CACHE_NEW_VS_PROG                (1<<BRW_VS_PROG)
#define CACHE_NEW_GS_UNIT                (1<<BRW_GS_UNIT)
#define CACHE_NEW_GS_PROG                (1<<BRW_GS_PROG)
#define CACHE_NEW_CLIP_VP                (1<<BRW_CLIP_VP)
#define CACHE_NEW_CLIP_UNIT              (1<<BRW_CLIP_UNIT)
#define CACHE_NEW_CLIP_PROG              (1<<BRW_CLIP_PROG)
#define CACHE_NEW_SURFACE                (1<<BRW_SS_SURFACE)
#define CACHE_NEW_SURF_BIND              (1<<BRW_SS_SURF_BIND)

struct brw_cached_batch_item {
   struct header *header;
   GLuint sz;
   struct brw_cached_batch_item *next;
};
   


/* Protect against a future where VERT_ATTRIB_MAX > 32.  Wouldn't life
 * be easier if C allowed arrays of packed elements?
 */
#define ATTRIB_BIT_DWORDS  ((VERT_ATTRIB_MAX+31)/32)

struct brw_vertex_element {
   const struct gl_client_array *glarray;

   /** Size of a complete element */
   GLuint element_size;
   /** Number of uploaded elements for this input. */
   GLuint count;
   /** Byte stride between elements in the uploaded array */
   GLuint stride;
   /** Offset of the first element within the buffer object */
   unsigned int offset;
   /** Buffer object containing the uploaded vertex data */
   dri_bo *bo;
};



struct brw_vertex_info {
   GLuint varying;  /* varying:1[VERT_ATTRIB_MAX] */
   GLuint sizes[ATTRIB_BIT_DWORDS * 2]; /* sizes:2[VERT_ATTRIB_MAX] */
};




/* Cache for TNL programs.
 */
struct brw_tnl_cache_item {
   GLuint hash;
   void *key;
   void *data;
   struct brw_tnl_cache_item *next;
};

struct brw_tnl_cache {
   struct brw_tnl_cache_item **items;
   GLuint size, n_items;
};



struct brw_context 
{
   struct intel_context intel;
   GLuint primitive;

   GLboolean emit_state_always;
   GLboolean wrap;
   GLboolean tmp_fallback;
   GLboolean no_batch_wrap;

   struct {
      struct brw_state_flags dirty;
      struct brw_tracked_state **atoms;
      GLuint nr_atoms;

      GLuint nr_draw_regions;
      struct intel_region *draw_regions[MAX_DRAW_BUFFERS];
      struct intel_region *depth_region;
   } state;

   struct brw_state_pointers attribs;
   struct brw_cache cache;
   struct brw_cached_batch_item *cached_batch_items;

   struct {
      struct brw_vertex_element inputs[VERT_ATTRIB_MAX];

#define BRW_NR_UPLOAD_BUFS 17
#define BRW_UPLOAD_INIT_SIZE (128*1024)

      struct {
	 dri_bo *bo;
	 GLuint offset;
      } upload;

      /* Summary of size and varying of active arrays, so we can check
       * for changes to this state:
       */
      struct brw_vertex_info info;
   } vb;

   struct {
      /* Will be allocated on demand if needed.   
       */
      struct brw_state_pointers attribs;
      struct gl_vertex_program *vp;
      struct gl_fragment_program *fp, *fp_tex;

      struct gl_buffer_object *vbo;

      struct intel_region *saved_draw_region;
      GLuint saved_nr_draw_regions;
      struct intel_region *saved_depth_region;

      GLuint restore_draw_buffers[MAX_DRAW_BUFFERS];
      GLuint restore_num_draw_buffers;

      struct gl_fragment_program *restore_fp;
      
      GLboolean active;
   } metaops;

   /* Track fixed function t&l in a vertex program:
    */
   struct gl_vertex_program *tnl_program;
   struct brw_tnl_cache tnl_program_cache;

   /* Active vertex program: 
    */
   const struct gl_vertex_program *vertex_program;
   const struct gl_fragment_program *fragment_program;


   /* For populating the gtt:
    */
   GLuint next_free_page;


   /* BRW_NEW_URB_ALLOCATIONS:
    */
   struct {
      GLuint vsize;		/* vertex size plus header in urb registers */
      GLuint csize;		/* constant buffer size in urb registers */
      GLuint sfsize;		/* setup data size in urb registers */

      GLboolean constrained;

      GLuint nr_vs_entries;
      GLuint nr_gs_entries;
      GLuint nr_clip_entries;
      GLuint nr_sf_entries;
      GLuint nr_cs_entries;

/*       GLuint vs_size; */
/*       GLuint gs_size; */
/*       GLuint clip_size; */
/*       GLuint sf_size; */
/*       GLuint cs_size; */

      GLuint vs_start;
      GLuint gs_start;
      GLuint clip_start;
      GLuint sf_start;
      GLuint cs_start;
   } urb;

   
   /* BRW_NEW_CURBE_OFFSETS: 
    */
   struct {
      GLuint wm_start;
      GLuint wm_size;
      GLuint clip_start;
      GLuint clip_size;
      GLuint vs_start;
      GLuint vs_size;
      GLuint total_size;

      /* Dynamic tracker which changes to reflect the state referenced
       * by active fp and vp program parameters:
       */
      struct brw_tracked_state tracked_state;

      dri_bo *curbe_bo;
      /** Offset within curbe_bo of space for current curbe entry */
      GLuint curbe_offset;
      /** Offset within curbe_bo of space for next curbe entry */
      GLuint curbe_next_offset;

      GLfloat *last_buf;
      GLuint last_bufsz;
   } curbe;

   struct {
      struct brw_vs_prog_data *prog_data;

      dri_bo *prog_bo;
      dri_bo *state_bo;
   } vs;

   struct {
      struct brw_gs_prog_data *prog_data;

      GLboolean prog_active;
      dri_bo *prog_bo;
      dri_bo *state_bo;
   } gs;

   struct {
      struct brw_clip_prog_data *prog_data;

      dri_bo *prog_bo;
      dri_bo *state_bo;
      dri_bo *vp_bo;
   } clip;


   struct {
      struct brw_sf_prog_data *prog_data;

      dri_bo *prog_bo;
      dri_bo *state_bo;
      dri_bo *vp_bo;
   } sf;

   struct {
      struct brw_wm_prog_data *prog_data;
      struct brw_wm_compile *compile_data;

      /* Input sizes, calculated from active vertex program:
       */
      GLuint input_size_masks[4];

      /** Array of surface default colors (texture border color) */
      dri_bo *sdc_bo[BRW_MAX_TEX_UNIT];

      GLuint render_surf;
      GLuint nr_surfaces;      

      GLuint max_threads;
      dri_bo *scratch_buffer;

      GLuint sampler_count;
      dri_bo *sampler_bo;

      /** Binding table of pointers to surf_bo entries */
      dri_bo *bind_bo;
      dri_bo *surf_bo[BRW_WM_MAX_SURF];

      dri_bo *prog_bo;
      dri_bo *state_bo;
   } wm;


   struct {
      dri_bo *prog_bo;
      dri_bo *state_bo;
      dri_bo *vp_bo;
   } cc;

   
   /* Used to give every program string a unique id
    */
   GLuint program_id;
};


#define BRW_PACKCOLOR8888(r,g,b,a)  ((r<<24) | (g<<16) | (b<<8) | a)



/*======================================================================
 * brw_vtbl.c
 */
void brwInitVtbl( struct brw_context *brw );
void brw_do_flush( struct brw_context *brw, 
		   GLuint flags );

/*======================================================================
 * brw_context.c
 */
GLboolean brwCreateContext( const __GLcontextModes *mesaVis,
			    __DRIcontextPrivate *driContextPriv,
			    void *sharedContextPrivate);



/*======================================================================
 * brw_state.c
 */
int brw_validate_state( struct brw_context *brw );
void brw_init_state( struct brw_context *brw );
void brw_destroy_state( struct brw_context *brw );


/*======================================================================
 * brw_state_dump.c
 */
void brw_debug_batch(struct intel_context *intel);

/*======================================================================
 * brw_tex.c
 */
void brwUpdateTextureState( struct intel_context *intel );
void brw_FrameBufferTexInit( struct brw_context *brw,
			     struct intel_region *region );
void brw_FrameBufferTexDestroy( struct brw_context *brw );
void brw_validate_textures( struct brw_context *brw );

/*======================================================================
 * brw_metaops.c
 */

void brw_init_metaops( struct brw_context *brw );
void brw_destroy_metaops( struct brw_context *brw );


/*======================================================================
 * brw_program.c
 */
void brwInitFragProgFuncs( struct dd_function_table *functions );


/* brw_urb.c
 */
void brw_upload_urb_fence(struct brw_context *brw);

void brw_upload_constant_buffer_state(struct brw_context *brw);


/*======================================================================
 * Inline conversion functions.  These are better-typed than the
 * macros used previously:
 */
static INLINE struct brw_context *
brw_context( GLcontext *ctx )
{
   return (struct brw_context *)ctx;
}

#define DO_SETUP_BITS ((1<<(FRAG_ATTRIB_MAX)) - 1)

#endif