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

   1 /**************************************************************************
   2  *
   3  * Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas.
   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 TUNGSTEN GRAPHICS 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 #ifdef __cplusplus
  40 extern "C" {
  41 #endif
  42
  43 struct intel_context;
  44 struct intel_mipmap_tree;
  45 struct intel_texture_image;
  46
  47 /**
  48  * Intel renderbuffer, derived from gl_renderbuffer.
  49  */
  50 struct intel_renderbuffer
  51 {
  52    struct swrast_renderbuffer Base;
  53    struct intel_mipmap_tree *mt; /**< The renderbuffer storage. */
  54    drm_intel_bo *map_bo;
  55
  56    /**
  57     * \name Miptree view
  58     * \{
  59     *
  60     * Multiple renderbuffers may simultaneously wrap a single texture and each
  61     * provide a different view into that texture. The fields below indicate
  62     * which miptree slice is wrapped by this renderbuffer.  The fields' values
  63     * are consistent with the 'level' and 'layer' parameters of
  64     * glFramebufferTextureLayer().
  65     *
  66     * For renderbuffers not created with glFramebufferTexture*(), mt_level and
  67     * mt_layer are 0.
  68     */
  69    unsigned int mt_level;
  70    unsigned int mt_layer;
  71    /** \} */
  72
  73    GLuint draw_x, draw_y; /**< Offset of drawing within the region */
  74 };
  75
  76
  77 /**
  78  * gl_renderbuffer is a base class which we subclass.  The Class field
  79  * is used for simple run-time type checking.
  80  */
  81 #define INTEL_RB_CLASS 0x12345678
  82
  83
  84 /**
  85  * Return a gl_renderbuffer ptr casted to intel_renderbuffer.
  86  * NULL will be returned if the rb isn't really an intel_renderbuffer.
  87  * This is determined by checking the ClassID.
  88  */
  89 static INLINE struct intel_renderbuffer *
  90 intel_renderbuffer(struct gl_renderbuffer *rb)
  91 {
  92    struct intel_renderbuffer *irb = (struct intel_renderbuffer *) rb;
  93    if (irb && irb->Base.Base.ClassID == INTEL_RB_CLASS) {
  94       /*_mesa_warning(NULL, "Returning non-intel Rb\n");*/
  95       return irb;
  96    }
  97    else
  98       return NULL;
  99 }
 100
 101
 102 /**
 103  * \brief Return the framebuffer attachment specified by attIndex.
 104  *
 105  * If the framebuffer lacks the specified attachment, then return null.
 106  *
 107  * If the attached renderbuffer is a wrapper, then return wrapped
 108  * renderbuffer.
 109  */
 110 static INLINE struct intel_renderbuffer *
 111 intel_get_renderbuffer(struct gl_framebuffer *fb, gl_buffer_index attIndex)
 112 {
 113    struct gl_renderbuffer *rb;
 114
 115    assert((unsigned)attIndex < ARRAY_SIZE(fb->Attachment));
 116
 117    rb = fb->Attachment[attIndex].Renderbuffer;
 118    if (!rb)
 119       return NULL;
 120
 121    return intel_renderbuffer(rb);
 122 }
 123
 124
 125 static INLINE gl_format
 126 intel_rb_format(const struct intel_renderbuffer *rb)
 127 {
 128    return rb->Base.Base.Format;
 129 }
 130
 131 extern struct intel_renderbuffer *
 132 intel_create_renderbuffer(gl_format format);
 133
 134 struct intel_renderbuffer *
 135 intel_create_private_renderbuffer(gl_format format);
 136
 137 struct gl_renderbuffer*
 138 intel_create_wrapped_renderbuffer(struct gl_context * ctx,
 139                                   int width, int height,
 140                                   gl_format format);
 141
 142 extern void
 143 intel_fbo_init(struct intel_context *intel);
 144
 145
 146 extern void
 147 intel_flip_renderbuffers(struct gl_framebuffer *fb);
 148
 149 void
 150 intel_renderbuffer_set_draw_offset(struct intel_renderbuffer *irb);
 151
 152 static inline uint32_t
 153 intel_renderbuffer_get_tile_offsets(struct intel_renderbuffer *irb,
 154                                     uint32_t *tile_x,
 155                                     uint32_t *tile_y)
 156 {
 157    return intel_miptree_get_tile_offsets(irb->mt, irb->mt_level, irb->mt_layer,
 158                                          tile_x, tile_y);
 159 }
 160
 161 struct intel_region*
 162 intel_get_rb_region(struct gl_framebuffer *fb, GLuint attIndex);
 163
 164 #ifdef __cplusplus
 165 }
 166 #endif
 167
 168 #endif /* INTEL_FBO_H */