path: root/src/mesa/drivers/dri/i915-tex/intel_context.h

/**************************************************************************
 * 
 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
 * All Rights Reserved.
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sub license, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 * 
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 * 
 **************************************************************************/

#ifndef INTELCONTEXT_INC
#define INTELCONTEXT_INC



#include "mtypes.h"
#include "drm.h"
#include "mm.h"
#include "texmem.h"

#include "intel_screen.h"
#include "i915_drm.h"
#include "i830_common.h"
#include "tnl/t_vertex.h"

#define TAG(x) intel##x
#include "tnl_dd/t_dd_vertex.h"
#undef TAG

#define DV_PF_555  (1<<8)
#define DV_PF_565  (2<<8)
#define DV_PF_8888 (3<<8)

struct intel_region;
struct intel_context;

typedef void (*intel_tri_func)(struct intel_context *, intelVertex *, intelVertex *,
							  intelVertex *);
typedef void (*intel_line_func)(struct intel_context *, intelVertex *, intelVertex *);
typedef void (*intel_point_func)(struct intel_context *, intelVertex *);

#define INTEL_FALLBACK_DRAW_BUFFER	 0x1
#define INTEL_FALLBACK_READ_BUFFER	 0x2
#define INTEL_FALLBACK_DEPTH_BUFFER      0x4
#define INTEL_FALLBACK_STENCIL_BUFFER    0x8
#define INTEL_FALLBACK_USER		 0x10
#define INTEL_FALLBACK_RENDERMODE	 0x20

extern void intelFallback( struct intel_context *intel, GLuint bit, GLboolean mode );
#define FALLBACK( intel, bit, mode ) intelFallback( intel, bit, mode )



struct intel_texture_object
{
   struct gl_texture_object base; /* The "parent" object */

   /* The mipmap tree must include at least these levels once
    * validated:
    */
   GLuint firstLevel;
   GLuint lastLevel;

   /* Offset for firstLevel image:
    */
   GLuint textureOffset;

   /* On validation any active images held in main memory or in other
    * regions will be copied to this region and the old storage freed.
    */
   struct intel_mipmap_tree *mt;
};



struct intel_texture_image 
{
   struct gl_texture_image base;

   /* These aren't stored in gl_texture_image 
    */
   GLuint level;
   GLuint face;

   /* If intelImage->mt != NULL, image data is stored here.
    * Else if intelImage->base.Data != NULL, image is stored there.
    * Else there is no image data.
    */
   struct intel_mipmap_tree *mt;
};


#define INTEL_MAX_FIXUP 64

struct intel_context
{
   GLcontext ctx;		/* the parent class */

   struct {
      void (*destroy)( struct intel_context *intel ); 
      void (*emit_state)( struct intel_context *intel );
      void (*lost_hardware)( struct intel_context *intel );
      void (*update_texture_state)( struct intel_context *intel );

      void (*render_start)( struct intel_context *intel );
      void (*set_draw_region)( struct intel_context *intel, 
			       struct intel_region *draw_region,
			       struct intel_region *depth_region );

      GLuint (*flush_cmd)( void );

<<<<<<< intel_context.h
      void (*render_start)( intelContextPtr intel );
      void (*set_color_region)( intelContextPtr intel, const intelRegion *reg );
      void (*set_z_region)( intelContextPtr intel, const intelRegion *reg );
      void (*update_color_z_regions)(intelContextPtr intel,
                                     const intelRegion *colorRegion,
                                     const intelRegion *depthRegion);
      void (*emit_flush)( intelContextPtr intel );
      void (*reduced_primitive_state)( intelContextPtr intel, GLenum rprim );
=======
      void (*reduced_primitive_state)( struct intel_context *intel, GLenum rprim );

      GLboolean (*check_vertex_size)( struct intel_context *intel, GLuint expected );
>>>>>>> 1.8.2.25


      /* Metaops: 
       */
      void (*install_meta_state)( struct intel_context *intel );
      void (*leave_meta_state)( struct intel_context *intel );

<<<<<<< intel_context.h
      void (*rotate_window)( intelContextPtr intel,
                             __DRIdrawablePrivate *dPriv, GLuint srcBuf);

      intelTextureObjectPtr (*alloc_tex_obj)( struct gl_texture_object *tObj );
=======
      void (*meta_draw_region)( struct intel_context *intel,
				struct intel_region *draw_region,
				struct intel_region *depth_region );

      void (*meta_color_mask)( struct intel_context *intel,
			       GLboolean );
      
      void (*meta_stencil_replace)( struct intel_context *intel,
				    GLuint mask,
				    GLuint clear );

      void (*meta_depth_replace)( struct intel_context *intel );

      void (*meta_texture_blend_replace)( struct intel_context *intel );

      void (*meta_no_stencil_write)( struct intel_context *intel );
      void (*meta_no_depth_write)( struct intel_context *intel );
      void (*meta_no_texture)( struct intel_context *intel );

      void (*meta_import_pixel_state)( struct intel_context *intel );

      GLboolean (*meta_tex_rect_source)( struct intel_context *intel,
					 GLuint buffer,
					 GLuint offset,
					 GLuint pitch,
					 GLuint height,
					 GLenum format,
					 GLenum type);
>>>>>>> 1.8.2.25

   } vtbl;

   GLint refcount;   
   GLuint Fallback;
   GLuint NewGLState;
   
<<<<<<< intel_context.h
   struct {
      GLuint start_offset;
      GLint size;
      GLint space;
      GLubyte *ptr;
      GLuint counter;
      GLuint last_emit_state;
      GLboolean contains_geometry;
      const char *func;
      GLuint last_swap;
   } batch;
      
   struct {
      void *ptr;
      GLint size;
      GLuint offset;
      GLuint active_buf;
      GLuint irq_emitted;
   } alloc;
=======
   GLuint last_fence;
   GLuint last_swap_fence;

   struct intel_batchbuffer *batch;
>>>>>>> 1.8.2.25

   struct {
      GLuint id;
      GLuint primitive;
      GLubyte *start_ptr;      
      void (*flush)( struct intel_context * );
   } prim;

   GLboolean locked;
   char *prevLockFile;
   int prevLockLine;

   GLuint ClearColor565;
   GLuint ClearColor8888;

   /* Offsets of fields within the current vertex:
    */
   GLuint coloroffset;
   GLuint specoffset;
   GLuint wpos_offset;
   GLuint wpos_size;

   struct tnl_attr_map vertex_attrs[VERT_ATTRIB_MAX];
   GLuint vertex_attr_count;

   GLfloat polygon_offset_scale; /* dependent on depth_scale, bpp */

   GLboolean hw_stipple;
   
   /* AGP memory buffer manager:
    */
   struct bufmgr *bm;


   /* State for intelvb.c and inteltris.c.
    */
   GLuint RenderIndex;
   GLmatrix ViewportMatrix;
   GLenum render_primitive;
   GLenum reduced_primitive;
   GLuint vertex_size;
   GLubyte *verts;			/* points to tnl->clipspace.vertex_buf */


   struct intel_region *front_region;   /* XXX FBO: obsolete */
   struct intel_region *back_region;    /* XXX FBO: obsolete */
   struct intel_region *draw_region;    /* XXX FBO: rename to color_region */
   struct intel_region *depth_region;   /**< currently bound depth/Z region */


   /* Fallback rasterization functions 
    */
   intel_point_func draw_point;
   intel_line_func draw_line;
   intel_tri_func draw_tri;

<<<<<<< intel_context.h
   /* Drawing buffer state
=======
   /* These refer to the current drawing buffer:
>>>>>>> 1.8.2.25
    */
<<<<<<< intel_context.h
   intelRegion *drawRegion;  /* current drawing buffer */
   intelRegion *readRegion;  /* current reading buffer */

   int drawX;			/* origin of drawable in draw buffer */
   int drawY;
   GLuint numClipRects;		/* cliprects for that buffer */
=======
   int drawX, drawY;            /**< origin of drawing area within region */
   GLuint numClipRects;		/**< cliprects for drawing */
>>>>>>> 1.8.2.25
   drm_clip_rect_t *pClipRects;
   drm_clip_rect_t fboRect;     /**< cliprect for FBO rendering */

   int perf_boxes;

   GLuint do_usleeps;
   int do_irqs;
   GLuint irqsEmitted;
   drm_i915_irq_wait_t iw;

   /* XXX these seem to be unused */
#if 0
   GLboolean scissor;
   drm_clip_rect_t draw_rect;
   drm_clip_rect_t scissor_rect;
#endif

   drm_context_t hHWContext;
   drmLock *driHwLock;
   int driFd;

   __DRIdrawablePrivate *driDrawable;
   __DRIscreenPrivate *driScreen;
   intelScreenPrivate *intelScreen; 
   drmI830Sarea *sarea; 
   
   GLuint lastStamp;

   /**
    * Configuration cache
    */
   driOptionCache optionCache;

   /* VBI
    */
   GLuint vbl_seq;
   GLuint vblank_flags;

   int64_t swap_ust;
   int64_t swap_missed_ust;

   GLuint swap_count;
   GLuint swap_missed_count;
};


#define DEBUG_LOCKING	1

#if DEBUG_LOCKING

#define DEBUG_LOCK()							\
   do {									\
      intel->prevLockFile = (__FILE__);					\
      intel->prevLockLine = (__LINE__);					\
   } while (0)

#define DEBUG_RESET()							\
   do {									\
      intel->prevLockFile = 0;						\
      intel->prevLockLine = 0;						\
   } while (0)

/* Slightly less broken way of detecting recursive locking in a
 * threaded environment.  The right way to do this would be to make
 * prevLockFile, prevLockLine thread-local.
 *
 * This technique instead checks to see if the same context is
 * requesting the lock twice -- this will not catch application
 * breakages where the same context is active in two different threads
 * at once, but it will catch driver breakages (recursive locking) in
 * threaded apps.
 */
#define DEBUG_CHECK_LOCK()						\
   do {									\
      if ( *((volatile int *)intel->driHwLock) == 			\
	   (DRM_LOCK_HELD | intel->hHWContext) ) {			\
	 fprintf( stderr,						\
		  "LOCK SET!\n\tPrevious %s:%d\n\tCurrent: %s:%d\n",	\
		  intel->prevLockFile, intel->prevLockLine,		\
		  __FILE__, __LINE__ );					\
	 abort();							\
      }									\
   } while (0)

#else

#define DEBUG_LOCK()
#define DEBUG_RESET()
#define DEBUG_CHECK_LOCK()

#endif




/* Lock the hardware and validate our state.  
 */
#define LOCK_HARDWARE( intel )				\
do {							\
    char __ret=0;					\
    DEBUG_CHECK_LOCK();					\
    assert(!(intel)->locked);				\
    DRM_CAS((intel)->driHwLock, (intel)->hHWContext,	\
        (DRM_LOCK_HELD|(intel)->hHWContext), __ret);	\
    if (__ret)						\
        intelGetLock( (intel), 0 );			\
     DEBUG_LOCK();					\
    (intel)->locked = 1;				\
}while (0)
 
  
  /* Unlock the hardware using the global current context 
   */
#define UNLOCK_HARDWARE(intel)						\
do {									\
   intel->locked = 0;							\
   if (0) { 								\
      intel->perf_boxes |= intel->sarea->perf_boxes;  			\
      intel->sarea->perf_boxes = 0;					\
   }									\
   DRM_UNLOCK((intel)->driFd, (intel)->driHwLock, (intel)->hHWContext);	\
   DEBUG_RESET();							\
} while (0)


#define SUBPIXEL_X 0.125
#define SUBPIXEL_Y 0.125

#define INTEL_FIREVERTICES(intel)		\
do {						\
   assert(!(intel)->prim.flush);		\
} while (0)

/* ================================================================
 * Color packing:
 */

#define INTEL_PACKCOLOR4444(r,g,b,a) \
  ((((a) & 0xf0) << 8) | (((r) & 0xf0) << 4) | ((g) & 0xf0) | ((b) >> 4))

#define INTEL_PACKCOLOR1555(r,g,b,a) \
  ((((r) & 0xf8) << 7) | (((g) & 0xf8) << 2) | (((b) & 0xf8) >> 3) | \
    ((a) ? 0x8000 : 0))

#define INTEL_PACKCOLOR565(r,g,b) \
  ((((r) & 0xf8) << 8) | (((g) & 0xfc) << 3) | (((b) & 0xf8) >> 3))

#define INTEL_PACKCOLOR8888(r,g,b,a) \
  ((a<<24) | (r<<16) | (g<<8) | b)



/* ================================================================
 * From linux kernel i386 header files, copes with odd sizes better
 * than COPY_DWORDS would:
 * XXX Put this in src/mesa/main/imports.h ???
 */
#if defined(i386) || defined(__i386__)
static INLINE void * __memcpy(void * to, const void * from, size_t n)
{
   int d0, d1, d2;
   __asm__ __volatile__(
      "rep ; movsl\n\t"
      "testb $2,%b4\n\t"
      "je 1f\n\t"
      "movsw\n"
      "1:\ttestb $1,%b4\n\t"
      "je 2f\n\t"
      "movsb\n"
      "2:"
      : "=&c" (d0), "=&D" (d1), "=&S" (d2)
      :"0" (n/4), "q" (n),"1" ((long) to),"2" ((long) from)
      : "memory");
   return (to);
}
#else
#define __memcpy(a,b,c) memcpy(a,b,c)
#endif



/* ================================================================
 * Debugging:
 */
#define DO_DEBUG		1
#if DO_DEBUG
extern int INTEL_DEBUG;
#else
#define INTEL_DEBUG		0
#endif

#define DEBUG_TEXTURE	0x1
#define DEBUG_STATE	0x2
#define DEBUG_IOCTL	0x4
#define DEBUG_PRIMS	0x8
#define DEBUG_VERTS	0x10
#define DEBUG_FALLBACKS	0x20
#define DEBUG_VERBOSE	0x40
#define DEBUG_DRI       0x80
#define DEBUG_DMA       0x100
#define DEBUG_SANITY    0x200
#define DEBUG_SYNC      0x400
#define DEBUG_SLEEP     0x800
#define DEBUG_PIXEL     0x1000


#define PCI_CHIP_845_G			0x2562
#define PCI_CHIP_I830_M			0x3577
#define PCI_CHIP_I855_GM		0x3582
#define PCI_CHIP_I865_G			0x2572
#define PCI_CHIP_I915_G			0x2582
#define PCI_CHIP_I915_GM		0x2592
#define PCI_CHIP_I945_G			0x2772
#define PCI_CHIP_I945_GM		0x27A2


/* ================================================================
 * intel_context.c:
 */

extern GLboolean intelInitContext( struct intel_context *intel, 
				   const __GLcontextModes *mesaVis,
				   __DRIcontextPrivate *driContextPriv,
				   void *sharedContextPrivate,
				   struct dd_function_table *functions );

extern void intelGetLock(struct intel_context *intel, GLuint flags);

extern void intelInitState( GLcontext *ctx );
extern void intelFinish( GLcontext *ctx );
extern void intelFlush( GLcontext *ctx );

extern void intelInitDriverFunctions( struct dd_function_table *functions );


/* ================================================================
 * intel_state.c:
 */
extern void intelInitStateFuncs( struct dd_function_table *functions );

#define COMPAREFUNC_ALWAYS		0
#define COMPAREFUNC_NEVER		0x1
#define COMPAREFUNC_LESS		0x2
#define COMPAREFUNC_EQUAL		0x3
#define COMPAREFUNC_LEQUAL		0x4
#define COMPAREFUNC_GREATER		0x5
#define COMPAREFUNC_NOTEQUAL		0x6
#define COMPAREFUNC_GEQUAL		0x7

#define STENCILOP_KEEP			0
#define STENCILOP_ZERO			0x1
#define STENCILOP_REPLACE		0x2
#define STENCILOP_INCRSAT		0x3
#define STENCILOP_DECRSAT		0x4
#define STENCILOP_INCR			0x5
#define STENCILOP_DECR			0x6
#define STENCILOP_INVERT		0x7

#define LOGICOP_CLEAR			0
#define LOGICOP_NOR			0x1
#define LOGICOP_AND_INV 		0x2
#define LOGICOP_COPY_INV		0x3
#define LOGICOP_AND_RVRSE		0x4
#define LOGICOP_INV			0x5
#define LOGICOP_XOR			0x6
#define LOGICOP_NAND			0x7
#define LOGICOP_AND			0x8
#define LOGICOP_EQUIV			0x9
#define LOGICOP_NOOP			0xa
#define LOGICOP_OR_INV			0xb
#define LOGICOP_COPY			0xc
#define LOGICOP_OR_RVRSE		0xd
#define LOGICOP_OR			0xe
#define LOGICOP_SET			0xf

#define BLENDFACT_ZERO			0x01
#define BLENDFACT_ONE			0x02
#define BLENDFACT_SRC_COLR		0x03
#define BLENDFACT_INV_SRC_COLR 		0x04
#define BLENDFACT_SRC_ALPHA		0x05
#define BLENDFACT_INV_SRC_ALPHA 	0x06
#define BLENDFACT_DST_ALPHA		0x07
#define BLENDFACT_INV_DST_ALPHA 	0x08
#define BLENDFACT_DST_COLR		0x09
#define BLENDFACT_INV_DST_COLR		0x0a
#define BLENDFACT_SRC_ALPHA_SATURATE	0x0b
#define BLENDFACT_CONST_COLOR		0x0c
#define BLENDFACT_INV_CONST_COLOR	0x0d
#define BLENDFACT_CONST_ALPHA		0x0e
#define BLENDFACT_INV_CONST_ALPHA	0x0f
#define BLENDFACT_MASK          	0x0f

#define MI_BATCH_BUFFER_END 	(0xA<<23)


extern int intel_translate_compare_func( GLenum func );
extern int intel_translate_stencil_op( GLenum op );
extern int intel_translate_blend_factor( GLenum factor );
extern int intel_translate_logic_op( GLenum opcode );


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

static INLINE struct intel_texture_object *intel_texture_object( struct gl_texture_object *obj )
{
   return (struct intel_texture_object *)obj;
}

static INLINE struct intel_texture_image *intel_texture_image( struct gl_texture_image *img )
{
   return (struct intel_texture_image *)img;
}

extern struct intel_renderbuffer *intel_renderbuffer( struct gl_renderbuffer *rb );


#endif