src/mesa/drivers/dri/i915/intel_fbo.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2006 VMware, Inc.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #ifndef INTEL_FBO_H
  29 #define INTEL_FBO_H
  30
  31 #include <stdbool.h>
  32 #include <assert.h>
  33 #include "main/formats.h"
  34 #include "main/macros.h"
  35 #include "intel_context.h"
  36 #include "intel_mipmap_tree.h"
  37 #include "intel_screen.h"
  38
  39 struct intel_context;
  40 struct intel_mipmap_tree;
  41 struct intel_texture_image;
  42
  43 /**
  44  * Intel renderbuffer, derived from gl_renderbuffer.
  45  */
  46 struct intel_renderbuffer
  47 {
  48    struct swrast_renderbuffer Base;
  49    struct intel_mipmap_tree *mt; /**< The renderbuffer storage. */
  50
  51    /**
  52     * \name Miptree view
  53     * \{
  54     *
  55     * Multiple renderbuffers may simultaneously wrap a single texture and each
  56     * provide a different view into that texture. The fields below indicate
  57     * which miptree slice is wrapped by this renderbuffer.  The fields' values
  58     * are consistent with the 'level' and 'layer' parameters of
  59     * glFramebufferTextureLayer().
  60     *
  61     * For renderbuffers not created with glFramebufferTexture*(), mt_level and
  62     * mt_layer are 0.
  63     */
  64    unsigned int mt_level;
  65    unsigned int mt_layer;
  66    /** \} */
  67
  68    GLuint draw_x, draw_y; /**< Offset of drawing within the region */
  69 };
  70
  71
  72 /**
  73  * gl_renderbuffer is a base class which we subclass.  The Class field
  74  * is used for simple run-time type checking.
  75  */
  76 #define INTEL_RB_CLASS 0x12345678
  77
  78
  79 /**
  80  * Return a gl_renderbuffer ptr casted to intel_renderbuffer.
  81  * NULL will be returned if the rb isn't really an intel_renderbuffer.
  82  * This is determined by checking the ClassID.
  83  */
  84 static inline struct intel_renderbuffer *
  85 intel_renderbuffer(struct gl_renderbuffer *rb)
  86 {
  87    struct intel_renderbuffer *irb = (struct intel_renderbuffer *) rb;
  88    if (irb && irb->Base.Base.ClassID == INTEL_RB_CLASS)
  89       return irb;
  90    else
  91       return NULL;
  92 }
  93
  94
  95 /**
  96  * \brief Return the framebuffer attachment specified by attIndex.
  97  *
  98  * If the framebuffer lacks the specified attachment, then return null.
  99  *
 100  * If the attached renderbuffer is a wrapper, then return wrapped
 101  * renderbuffer.
 102  */
 103 static inline struct intel_renderbuffer *
 104 intel_get_renderbuffer(struct gl_framebuffer *fb, gl_buffer_index attIndex)
 105 {
 106    struct gl_renderbuffer *rb;
 107
 108    assert((unsigned)attIndex < ARRAY_SIZE(fb->Attachment));
 109
 110    rb = fb->Attachment[attIndex].Renderbuffer;
 111    if (!rb)
 112       return NULL;
 113
 114    return intel_renderbuffer(rb);
 115 }
 116
 117
 118 static inline mesa_format
 119 intel_rb_format(const struct intel_renderbuffer *rb)
 120 {
 121    return rb->Base.Base.Format;
 122 }
 123
 124 extern struct intel_renderbuffer *
 125 intel_create_renderbuffer(mesa_format format);
 126
 127 struct intel_renderbuffer *
 128 intel_create_private_renderbuffer(mesa_format format);
 129
 130 struct gl_renderbuffer*
 131 intel_create_wrapped_renderbuffer(struct gl_context * ctx,
 132                                   int width, int height,
 133                                   mesa_format format);
 134
 135 extern void
 136 intel_fbo_init(struct intel_context *intel);
 137
 138
 139 extern void
 140 intel_flip_renderbuffers(struct gl_framebuffer *fb);
 141
 142 void
 143 intel_renderbuffer_set_draw_offset(struct intel_renderbuffer *irb);
 144
 145 static inline uint32_t
 146 intel_renderbuffer_get_tile_offsets(struct intel_renderbuffer *irb,
 147                                     uint32_t *tile_x,
 148                                     uint32_t *tile_y)
 149 {
 150    return intel_miptree_get_tile_offsets(irb->mt, irb->mt_level, irb->mt_layer,
 151                                          tile_x, tile_y);
 152 }
 153
 154 struct intel_region*
 155 intel_get_rb_region(struct gl_framebuffer *fb, GLuint attIndex);
 156
 157 #endif /* INTEL_FBO_H */