r200_context.h

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

#define GRD_HORZ_GUARD_DISCARD_ADJ 4
#define GRD_STATE_SIZE             5

/* position changes frequently when lighting in modelpos - separate
 * out to new state item?  
 */
#define LIT_CMD_0                  0
#define LIT_AMBIENT_RED            1
#define LIT_AMBIENT_GREEN          2
#define LIT_AMBIENT_BLUE           3
#define LIT_AMBIENT_ALPHA          4
#define LIT_DIFFUSE_RED            5
#define LIT_DIFFUSE_GREEN          6
#define LIT_DIFFUSE_BLUE           7
#define LIT_DIFFUSE_ALPHA          8
#define LIT_SPECULAR_RED           9
#define LIT_SPECULAR_GREEN         10
#define LIT_SPECULAR_BLUE          11
#define LIT_SPECULAR_ALPHA         12
#define LIT_POSITION_X             13
#define LIT_POSITION_Y             14
#define LIT_POSITION_Z             15
#define LIT_POSITION_W             16
#define LIT_DIRECTION_X            17
#define LIT_DIRECTION_Y            18
#define LIT_DIRECTION_Z            19
#define LIT_DIRECTION_W            20
#define LIT_ATTEN_QUADRATIC        21
#define LIT_ATTEN_LINEAR           22
#define LIT_ATTEN_CONST            23
#define LIT_ATTEN_XXX              24
#define LIT_CMD_1                  25
#define LIT_SPOT_DCD               26
#define LIT_SPOT_DCM               27
#define LIT_SPOT_EXPONENT          28
#define LIT_SPOT_CUTOFF            29
#define LIT_SPECULAR_THRESH        30
#define LIT_RANGE_CUTOFF           31 /* ? */
#define LIT_ATTEN_CONST_INV        32
#define LIT_STATE_SIZE             33

/* Fog
 */
#define FOG_CMD_0      0
#define FOG_R          1
#define FOG_C          2
#define FOG_D          3
#define FOG_PAD        4
#define FOG_STATE_SIZE 5

/* UCP
 */
#define UCP_CMD_0      0
#define UCP_X          1
#define UCP_Y          2
#define UCP_Z          3
#define UCP_W          4
#define UCP_STATE_SIZE 5

/* GLT - Global ambient
 */
#define GLT_CMD_0      0
#define GLT_RED        1
#define GLT_GREEN      2
#define GLT_BLUE       3
#define GLT_ALPHA      4
#define GLT_STATE_SIZE 5

/* EYE
 */
#define EYE_CMD_0          0
#define EYE_X              1
#define EYE_Y              2
#define EYE_Z              3
#define EYE_RESCALE_FACTOR 4
#define EYE_STATE_SIZE     5

/* CST - constant state
 */
#define CST_CMD_0                             0
#define CST_PP_CNTL_X                         1
#define CST_CMD_1                             2
#define CST_RB3D_DEPTHXY_OFFSET               3
#define CST_CMD_2                             4
#define CST_RE_AUX_SCISSOR_CNTL               5
#define CST_CMD_3                             6
#define CST_RE_SCISSOR_TL_0                   7
#define CST_RE_SCISSOR_BR_0                   8
#define CST_CMD_4                             9
#define CST_SE_VAP_CNTL_STATUS                10
#define CST_CMD_5                             11
#define CST_RE_POINTSIZE                      12
#define CST_CMD_6                             13
#define CST_SE_TCL_INPUT_VTX_0                14
#define CST_SE_TCL_INPUT_VTX_1                15
#define CST_SE_TCL_INPUT_VTX_2                16
#define CST_SE_TCL_INPUT_VTX_3                17
#define CST_STATE_SIZE                        18

#define PRF_CMD_0         0
#define PRF_PP_TRI_PERF   1
#define PRF_PP_PERF_CNTL  2
#define PRF_STATE_SIZE    3


struct r200_hw_state {
   /* Head of the linked list of state atoms. */
   struct r200_state_atom atomlist;

   /* Hardware state, stored as cmdbuf commands:  
    *   -- Need to doublebuffer for
    *           - reviving state after loss of context
    *           - eliding noop statechange loops? (except line stipple count)
    */
   struct r200_state_atom ctx;
   struct r200_state_atom set;
   struct r200_state_atom vte;
   struct r200_state_atom lin;
   struct r200_state_atom msk;
   struct r200_state_atom vpt;
   struct r200_state_atom vap;
   struct r200_state_atom vtx;
   struct r200_state_atom tcl;
   struct r200_state_atom msl;
   struct r200_state_atom tcg;
   struct r200_state_atom msc;
   struct r200_state_atom cst;
   struct r200_state_atom tam;
   struct r200_state_atom tf;
   struct r200_state_atom tex[6];
   struct r200_state_atom cube[6];
   struct r200_state_atom zbs;
   struct r200_state_atom mtl[2];
   struct r200_state_atom mat[9];
   struct r200_state_atom lit[8]; /* includes vec, scl commands */
   struct r200_state_atom ucp[6];
   struct r200_state_atom pix[6]; /* pixshader stages */
   struct r200_state_atom eye; /* eye pos */
   struct r200_state_atom grd; /* guard band clipping */
   struct r200_state_atom fog;
   struct r200_state_atom glt;
   struct r200_state_atom prf;
   struct r200_state_atom afs[2];
   struct r200_state_atom pvs;
   struct r200_state_atom vpi[2];
   struct r200_state_atom vpp[2];
   struct r200_state_atom atf;
   struct r200_state_atom spr;
   struct r200_state_atom ptp;

   int max_state_size;	/* Number of bytes necessary for a full state emit. */
   GLboolean is_dirty, all_dirty;
};

struct r200_state {
   /* Derived state for internal purposes:
    */
   struct r200_colorbuffer_state color;
   struct r200_depthbuffer_state depth;
#if 00
   struct r200_pixel_state pixel;
#endif
   struct r200_scissor_state scissor;
   struct r200_stencilbuffer_state stencil;
   struct r200_stipple_state stipple;
   struct r200_texture_state texture;
   GLuint envneeded;
};

/* Need refcounting on dma buffers:
 */
struct r200_dma_buffer {
   int refcount;		/* the number of retained regions in buf */
   drmBufPtr buf;
};

#define GET_START(rvb) (rmesa->r200Screen->gart_buffer_offset +		\
			(rvb)->address - rmesa->dma.buf0_address +	\
			(rvb)->start)

/* A retained region, eg vertices for indexed vertices.
 */
struct r200_dma_region {
   struct r200_dma_buffer *buf;
   char *address;		/* == buf->address */
   int start, end, ptr;		/* offsets from start of buf */
   int aos_start;
   int aos_stride;
   int aos_size;
};


struct r200_dma {
   /* Active dma region.  Allocations for vertices and retained
    * regions come from here.  Also used for emitting random vertices,
    * these may be flushed by calling flush_current();
    */
   struct r200_dma_region current;
   
   void (*flush)( r200ContextPtr );

   char *buf0_address;		/* start of buf[0], for index calcs */
   GLuint nr_released_bufs;	/* flush after so many buffers released */
};

struct r200_dri_mirror {
   __DRIcontextPrivate	*context;	/* DRI context */
   __DRIscreenPrivate	*screen;	/* DRI screen */
   __DRIdrawablePrivate	*drawable;	/* DRI drawable bound to this ctx */
   __DRIdrawablePrivate	*readable;	/* DRI readable bound to this ctx */

   drm_context_t hwContext;
   drm_hw_lock_t *hwLock;
   int fd;
   int drmMinor;
};


#define R200_CMD_BUF_SZ  (16*1024) 

struct r200_store {
   GLuint statenr;
   GLuint primnr;
   char cmd_buf[R200_CMD_BUF_SZ];
   int cmd_used;   
   int elts_start;
};


/* r200_tcl.c
 */
struct r200_tcl_info {
   GLuint hw_primitive;

/* hw can handle 12 components max */
   struct r200_dma_region *aos_components[12];
   GLuint nr_aos_components;

   GLuint *Elts;

   struct r200_dma_region indexed_verts;
   struct r200_dma_region vertex_data[15];
};


/* r200_swtcl.c
 */
struct r200_swtcl_info {
   GLuint RenderIndex;
   
   /**
    * Size of a hardware vertex.  This is calculated when \c ::vertex_attrs is
    * installed in the Mesa state vector.
    */
   GLuint vertex_size;

   /**
    * Attributes instructing the Mesa TCL pipeline where / how to put vertex
    * data in the hardware buffer.
    */
   struct tnl_attr_map vertex_attrs[VERT_ATTRIB_MAX];

   /**
    * Number of elements of \c ::vertex_attrs that are actually used.
    */
   GLuint vertex_attr_count;

   /**
    * Cached pointer to the buffer where Mesa will store vertex data.
    */
   GLubyte *verts;

   /* Fallback rasterization functions
    */
   r200_point_func draw_point;
   r200_line_func draw_line;
   r200_tri_func draw_tri;

   GLuint hw_primitive;
   GLenum render_primitive;
   GLuint numverts;

   /**
    * Offset of the 4UB color data within a hardware (swtcl) vertex.
    */
   GLuint coloroffset;

   /**
    * Offset of the 3UB specular color data within a hardware (swtcl) vertex.
    */
   GLuint specoffset;

   /**
    * Should Mesa project vertex data or will the hardware do it?
    */
   GLboolean needproj;

   struct r200_dma_region indexed_verts;
};


struct r200_ioctl {
   GLuint vertex_offset;
   GLuint vertex_size;
};



#define R200_MAX_PRIMS 64



struct r200_prim {
   GLuint start;
   GLuint end;
   GLuint prim;
};

   /* A maximum total of 29 elements per vertex:  3 floats for position, 3
    * floats for normal, 4 floats for color, 4 bytes for secondary color,
    * 3 floats for each texture unit (18 floats total).
    * 
    * we maybe need add. 4 to prevent segfault if someone specifies
    * GL_TEXTURE6/GL_TEXTURE7 (esp. for the codegen-path) (FIXME: )
    * 
    * The position data is never actually stored here, so 3 elements could be
    * trimmed out of the buffer.
    */

#define R200_MAX_VERTEX_SIZE ((3*6)+11)


struct r200_context {
   GLcontext *glCtx;			/* Mesa context */

   /* Driver and hardware state management
    */
   struct r200_hw_state hw;
   struct r200_state state;
   struct r200_vertex_program *curr_vp_hw;

   /* Texture object bookkeeping
    */
   unsigned              nr_heaps;
   driTexHeap          * texture_heaps[ RADEON_NR_TEX_HEAPS ];
   driTextureObject      swapped;
   int                   texture_depth;
   float                 initialMaxAnisotropy;

   /* Rasterization and vertex state:
    */
   GLuint TclFallback;
   GLuint Fallback;
   GLuint NewGLState;
   DECLARE_RENDERINPUTS(tnl_index_bitset);	/* index of bits for last tnl_install_attrs */

   /* Vertex buffers
    */
   struct r200_ioctl ioctl;
   struct r200_dma dma;
   struct r200_store store;
   /* A full state emit as of the first state emit in the main store, in case
    * the context is lost.
    */
   struct r200_store backup_store;

   /* Page flipping
    */
   GLuint doPageFlip;

   /* Busy waiting
    */
   GLuint do_usleeps;
   GLuint do_irqs;
   GLuint irqsEmitted;
   drm_radeon_irq_wait_t iw;

   /* Clientdata textures;
    */
   GLuint prefer_gart_client_texturing;

   /* Drawable, cliprect and scissor information
    */
   GLuint numClipRects;			/* Cliprects for the draw buffer */
   drm_clip_rect_t *pClipRects;
   unsigned int lastStamp;
   GLboolean lost_context;
   GLboolean save_on_next_emit;
   radeonScreenPtr r200Screen;	/* Screen private DRI data */
   drm_radeon_sarea_t *sarea;		/* Private SAREA data */

   /* TCL stuff
    */
   GLmatrix TexGenMatrix[R200_MAX_TEXTURE_UNITS];
   GLboolean recheck_texgen[R200_MAX_TEXTURE_UNITS];
   GLboolean TexGenNeedNormals[R200_MAX_TEXTURE_UNITS];
   GLuint TexMatEnabled;
   GLuint TexMatCompSel;
   GLuint TexGenEnabled;
   GLuint TexGenCompSel;
   GLmatrix tmpmat;

   /* buffer swap
    */
   int64_t swap_ust;
   int64_t swap_missed_ust;

   GLuint swap_count;
   GLuint swap_missed_count;


   /* r200_tcl.c
    */
   struct r200_tcl_info tcl;

   /* r200_swtcl.c
    */
   struct r200_swtcl_info swtcl;

   /* Mirrors of some DRI state
    */
   struct r200_dri_mirror dri;

   /* Configuration cache
    */
   driOptionCache optionCache;

   GLboolean using_hyperz;
   GLboolean texmicrotile;

  struct ati_fragment_shader *afs_loaded;
};

#define R200_CONTEXT(ctx)		((r200ContextPtr)(ctx->DriverCtx))


static INLINE GLuint r200PackColor( GLuint cpp,
					GLubyte r, GLubyte g,
					GLubyte b, GLubyte a )
{
   switch ( cpp ) {
   case 2:
      return PACK_COLOR_565( r, g, b );
   case 4:
      return PACK_COLOR_8888( a, r, g, b );
   default:
      return 0;
   }
}


extern void r200DestroyContext( __DRIcontextPrivate *driContextPriv );
extern GLboolean r200CreateContext( const __GLcontextModes *glVisual,
				    __DRIcontextPrivate *driContextPriv,
				    void *sharedContextPrivate);
extern void r200SwapBuffers( __DRIdrawablePrivate *dPriv );
extern void r200CopySubBuffer( __DRIdrawablePrivate * dPriv,
			       int x, int y, int w, int h );
extern GLboolean r200MakeCurrent( __DRIcontextPrivate *driContextPriv,
				  __DRIdrawablePrivate *driDrawPriv,
				  __DRIdrawablePrivate *driReadPriv );
extern GLboolean r200UnbindContext( __DRIcontextPrivate *driContextPriv );

/* ================================================================
 * Debugging:
 */
#define DO_DEBUG		1

#if DO_DEBUG
extern int R200_DEBUG;
#else
#define R200_DEBUG		0
#endif

#define DEBUG_TEXTURE	0x001
#define DEBUG_STATE	0x002
#define DEBUG_IOCTL	0x004
#define DEBUG_PRIMS	0x008
#define DEBUG_VERTS	0x010
#define DEBUG_FALLBACKS	0x020
#define DEBUG_VFMT	0x040
#define DEBUG_CODEGEN	0x080
#define DEBUG_VERBOSE	0x100
#define DEBUG_DRI       0x200
#define DEBUG_DMA       0x400
#define DEBUG_SANITY    0x800
#define DEBUG_SYNC      0x1000
#define DEBUG_PIXEL     0x2000
#define DEBUG_MEMORY    0x4000

#endif /* __R200_CONTEXT_H__ */