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/**************************************************************************
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 *
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 * Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas.
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 * All Rights Reserved.
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a
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 * copy of this software and associated documentation files (the
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 * "Software"), to deal in the Software without restriction, including
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 * without limitation the rights to use, copy, modify, merge, publish,
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 * distribute, sub license, and/or sell copies of the Software, and to
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 * permit persons to whom the Software is furnished to do so, subject to
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 * the following conditions:
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 *
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 * The above copyright notice and this permission notice (including the
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 * next paragraph) shall be included in all copies or substantial portions
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 * of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
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 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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 *
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 **************************************************************************/
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#ifndef INTEL_FBO_H
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#define INTEL_FBO_H
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#include
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#include
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#include "main/formats.h"
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#include "main/macros.h"
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#include "intel_context.h"
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#include "intel_mipmap_tree.h"
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#include "intel_screen.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct intel_context;
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struct intel_mipmap_tree;
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struct intel_texture_image;
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/**
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 * Intel renderbuffer, derived from gl_renderbuffer.
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 */
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struct intel_renderbuffer
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{
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   struct swrast_renderbuffer Base;
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   struct intel_mipmap_tree *mt; /**< The renderbuffer storage. */
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   /**
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    * \name Miptree view
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    * \{
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    *
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    * Multiple renderbuffers may simultaneously wrap a single texture and each
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    * provide a different view into that texture. The fields below indicate
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    * which miptree slice is wrapped by this renderbuffer.  The fields' values
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    * are consistent with the 'level' and 'layer' parameters of
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    * glFramebufferTextureLayer().
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    *
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    * For renderbuffers not created with glFramebufferTexture*(), mt_level and
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    * mt_layer are 0.
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    */
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   unsigned int mt_level;
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   unsigned int mt_layer;
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   /** \} */
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   GLuint draw_x, draw_y; /**< Offset of drawing within the region */
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};
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/**
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 * gl_renderbuffer is a base class which we subclass.  The Class field
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 * is used for simple run-time type checking.
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 */
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#define INTEL_RB_CLASS 0x12345678
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/**
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 * Return a gl_renderbuffer ptr casted to intel_renderbuffer.
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 * NULL will be returned if the rb isn't really an intel_renderbuffer.
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 * This is determined by checking the ClassID.
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 */
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static INLINE struct intel_renderbuffer *
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intel_renderbuffer(struct gl_renderbuffer *rb)
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{
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   struct intel_renderbuffer *irb = (struct intel_renderbuffer *) rb;
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   if (irb && irb->Base.Base.ClassID == INTEL_RB_CLASS) {
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      /*_mesa_warning(NULL, "Returning non-intel Rb\n");*/
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      return irb;
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   }
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   else
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      return NULL;
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}
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/**
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 * \brief Return the framebuffer attachment specified by attIndex.
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 *
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 * If the framebuffer lacks the specified attachment, then return null.
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 *
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 * If the attached renderbuffer is a wrapper, then return wrapped
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 * renderbuffer.
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 */
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static INLINE struct intel_renderbuffer *
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intel_get_renderbuffer(struct gl_framebuffer *fb, gl_buffer_index attIndex)
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{
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   struct gl_renderbuffer *rb;
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   assert((unsigned)attIndex < ARRAY_SIZE(fb->Attachment));
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   rb = fb->Attachment[attIndex].Renderbuffer;
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   if (!rb)
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      return NULL;
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   return intel_renderbuffer(rb);
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}
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static INLINE gl_format
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intel_rb_format(const struct intel_renderbuffer *rb)
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{
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   return rb->Base.Base.Format;
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}
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extern struct intel_renderbuffer *
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intel_create_renderbuffer(gl_format format);
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struct intel_renderbuffer *
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intel_create_private_renderbuffer(gl_format format);
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struct gl_renderbuffer*
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intel_create_wrapped_renderbuffer(struct gl_context * ctx,
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				  int width, int height,
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				  gl_format format);
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extern void
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intel_fbo_init(struct intel_context *intel);
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extern void
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intel_flip_renderbuffers(struct gl_framebuffer *fb);
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void
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intel_renderbuffer_set_draw_offset(struct intel_renderbuffer *irb);
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static inline uint32_t
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intel_renderbuffer_get_tile_offsets(struct intel_renderbuffer *irb,
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                                    uint32_t *tile_x,
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                                    uint32_t *tile_y)
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{
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   return intel_miptree_get_tile_offsets(irb->mt, irb->mt_level, irb->mt_layer,
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                                         tile_x, tile_y);
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}
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struct intel_region*
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intel_get_rb_region(struct gl_framebuffer *fb, GLuint attIndex);
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#ifdef __cplusplus
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}
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#endif
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#endif /* INTEL_FBO_H */