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/**************************************************************************

 *

 * Copyright 2006 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 INTEL_FBO_H

#define INTEL_FBO_H

#include 

#include 

#include "main/formats.h"

#include "main/macros.h"

#include "brw_context.h"

#include "intel_mipmap_tree.h"

#include "intel_screen.h"

#ifdef __cplusplus

extern "C" {

#endif

struct intel_mipmap_tree;

struct intel_texture_image;

/**

 * Intel renderbuffer, derived from gl_renderbuffer.

 */

struct intel_renderbuffer

{

   struct swrast_renderbuffer Base;

   struct intel_mipmap_tree *mt; /**< The renderbuffer storage. */

   /**

    * \name Miptree view

    * \{

    *

    * Multiple renderbuffers may simultaneously wrap a single texture and each

    * provide a different view into that texture. The fields below indicate

    * which miptree slice is wrapped by this renderbuffer.  The fields' values

    * are consistent with the 'level' and 'layer' parameters of

    * glFramebufferTextureLayer().

    *

    * For renderbuffers not created with glFramebufferTexture*(), mt_level and

    * mt_layer are 0.

    */

   unsigned int mt_level;

   unsigned int mt_layer;

   /** \} */

   GLuint draw_x, draw_y; /**< Offset of drawing within the region */

};

/**

 * gl_renderbuffer is a base class which we subclass.  The Class field

 * is used for simple run-time type checking.

 */

#define INTEL_RB_CLASS 0x12345678

/**

 * Return a gl_renderbuffer ptr casted to intel_renderbuffer.

 * NULL will be returned if the rb isn't really an intel_renderbuffer.

 * This is determined by checking the ClassID.

 */

static INLINE struct intel_renderbuffer *

intel_renderbuffer(struct gl_renderbuffer *rb)

{

   struct intel_renderbuffer *irb = (struct intel_renderbuffer *) rb;

   if (irb && irb->Base.Base.ClassID == INTEL_RB_CLASS) {

      /*_mesa_warning(NULL, "Returning non-intel Rb\n");*/

      return irb;

   }

   else

      return NULL;

}

/**

 * \brief Return the framebuffer attachment specified by attIndex.

 *

 * If the framebuffer lacks the specified attachment, then return null.

 *

 * If the attached renderbuffer is a wrapper, then return wrapped

 * renderbuffer.

 */

static INLINE struct intel_renderbuffer *

intel_get_renderbuffer(struct gl_framebuffer *fb, gl_buffer_index attIndex)

{

   struct gl_renderbuffer *rb;

   assert((unsigned)attIndex < ARRAY_SIZE(fb->Attachment));

   rb = fb->Attachment[attIndex].Renderbuffer;

   if (!rb)

      return NULL;

   return intel_renderbuffer(rb);

}

static INLINE gl_format

intel_rb_format(const struct intel_renderbuffer *rb)

{

   return rb->Base.Base.Format;

}

extern struct intel_renderbuffer *

intel_create_renderbuffer(gl_format format, unsigned num_samples);

struct intel_renderbuffer *

intel_create_private_renderbuffer(gl_format format, unsigned num_samples);

struct gl_renderbuffer*

intel_create_wrapped_renderbuffer(struct gl_context * ctx,

				  int width, int height,

				  gl_format format);

extern void

intel_fbo_init(struct brw_context *brw);

void

intel_renderbuffer_set_draw_offset(struct intel_renderbuffer *irb);

static inline uint32_t

intel_renderbuffer_get_tile_offsets(struct intel_renderbuffer *irb,

                                    uint32_t *tile_x,

                                    uint32_t *tile_y)

{

   return intel_miptree_get_tile_offsets(irb->mt, irb->mt_level, irb->mt_layer,

                                         tile_x, tile_y);

}

void

intel_renderbuffer_set_needs_downsample(struct intel_renderbuffer *irb);

bool

intel_renderbuffer_has_hiz(struct intel_renderbuffer *irb);

void

intel_renderbuffer_set_needs_hiz_resolve(struct intel_renderbuffer *irb);

void

intel_renderbuffer_set_needs_depth_resolve(struct intel_renderbuffer *irb);

/**

 * \brief Perform a HiZ resolve on the renderbuffer.

 *

 * It is safe to call this function on a renderbuffer without HiZ. In that

 * case, the function is a no-op.

 *

 * \return false if no resolve was needed

 */

bool

intel_renderbuffer_resolve_hiz(struct brw_context *brw,

			       struct intel_renderbuffer *irb);

/**

 * \brief Perform a depth resolve on the renderbuffer.

 *

 * It is safe to call this function on a renderbuffer without HiZ. In that

 * case, the function is a no-op.

 *

 * \return false if no resolve was needed

 */

bool

intel_renderbuffer_resolve_depth(struct brw_context *brw,

				 struct intel_renderbuffer *irb);

void intel_renderbuffer_move_to_temp(struct brw_context *brw,

                                     struct intel_renderbuffer *irb,

                                     bool invalidate);

unsigned

intel_quantize_num_samples(struct intel_screen *intel, unsigned num_samples);

#ifdef __cplusplus

}

#endif

#endif /* INTEL_FBO_H */