src/mesa/drivers/dri/intel/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 "intel_context.h"
  35 #include "intel_screen.h"
  36
  37 struct intel_context;
  38 struct intel_mipmap_tree;
  39 struct intel_texture_image;
  40
  41 /**
  42  * Intel renderbuffer, derived from gl_renderbuffer.
  43  */
  44 struct intel_renderbuffer
  45 {
  46    struct swrast_renderbuffer Base;
  47    struct intel_mipmap_tree *mt; /**< The renderbuffer storage. */
  48    drm_intel_bo *map_bo;
  49
  50    /**
  51     * \name Miptree view
  52     * \{
  53     *
  54     * Multiple renderbuffers may simultaneously wrap a single texture and each
  55     * provide a different view into that texture. The fields below indicate
  56     * which miptree slice is wrapped by this renderbuffer.  The fields' values
  57     * are consistent with the 'level' and 'layer' parameters of
  58     * glFramebufferTextureLayer().
  59     *
  60     * For renderbuffers not created with glFramebufferTexture*(), mt_level and
  61     * mt_layer are 0.
  62     */
  63    unsigned int mt_level;
  64    unsigned int mt_layer;
  65    /** \} */
  66
  67    GLuint draw_x, draw_y; /**< Offset of drawing within the region */
  68 };
  69
  70
  71 /**
  72  * gl_renderbuffer is a base class which we subclass.  The Class field
  73  * is used for simple run-time type checking.
  74  */
  75 #define INTEL_RB_CLASS 0x12345678
  76
  77
  78 /**
  79  * Return a gl_renderbuffer ptr casted to intel_renderbuffer.
  80  * NULL will be returned if the rb isn't really an intel_renderbuffer.
  81  * This is determined by checking the ClassID.
  82  */
  83 static INLINE struct intel_renderbuffer *
  84 intel_renderbuffer(struct gl_renderbuffer *rb)
  85 {
  86    struct intel_renderbuffer *irb = (struct intel_renderbuffer *) rb;
  87    if (irb && irb->Base.Base.ClassID == INTEL_RB_CLASS) {
  88       /*_mesa_warning(NULL, "Returning non-intel Rb\n");*/
  89       return irb;
  90    }
  91    else
  92       return NULL;
  93 }
  94
  95
  96 /**
  97  * \brief Return the framebuffer attachment specified by attIndex.
  98  *
  99  * If the framebuffer lacks the specified attachment, then return null.
 100  *
 101  * If the attached renderbuffer is a wrapper, then return wrapped
 102  * renderbuffer.
 103  */
 104 static INLINE struct intel_renderbuffer *
 105 intel_get_renderbuffer(struct gl_framebuffer *fb, gl_buffer_index attIndex)
 106 {
 107    struct gl_renderbuffer *rb;
 108
 109    assert((unsigned)attIndex < ARRAY_SIZE(fb->Attachment));
 110
 111    rb = fb->Attachment[attIndex].Renderbuffer;
 112    if (!rb)
 113       return NULL;
 114
 115    return intel_renderbuffer(rb);
 116 }
 117
 118
 119 static INLINE gl_format
 120 intel_rb_format(const struct intel_renderbuffer *rb)
 121 {
 122    return rb->Base.Base.Format;
 123 }
 124
 125
 126 bool
 127 intel_framebuffer_has_hiz(struct gl_framebuffer *fb);
 128
 129 extern struct intel_renderbuffer *
 130 intel_create_renderbuffer(gl_format format);
 131
 132 struct gl_renderbuffer*
 133 intel_create_wrapped_renderbuffer(struct gl_context * ctx,
 134                                   int width, int height,
 135                                   gl_format format);
 136
 137 GLboolean
 138 intel_alloc_renderbuffer_storage(struct gl_context * ctx,
 139                                  struct gl_renderbuffer *rb,
 140                                  GLenum internalFormat,
 141                                  GLuint width, GLuint height);
 142
 143 extern void
 144 intel_fbo_init(struct intel_context *intel);
 145
 146
 147 extern void
 148 intel_flip_renderbuffers(struct gl_framebuffer *fb);
 149
 150 void
 151 intel_renderbuffer_set_draw_offset(struct intel_renderbuffer *irb);
 152
 153 uint32_t
 154 intel_renderbuffer_tile_offsets(struct intel_renderbuffer *irb,
 155                                 uint32_t *tile_x,
 156                                 uint32_t *tile_y);
 157
 158 struct intel_region*
 159 intel_get_rb_region(struct gl_framebuffer *fb, GLuint attIndex);
 160
 161 void
 162 intel_renderbuffer_set_needs_hiz_resolve(struct intel_renderbuffer *irb);
 163
 164 void
 165 intel_renderbuffer_set_needs_depth_resolve(struct intel_renderbuffer *irb);
 166
 167
 168 /**
 169  * \brief Perform a HiZ resolve on the renderbuffer.
 170  *
 171  * It is safe to call this function on a renderbuffer without HiZ. In that
 172  * case, the function is a no-op.
 173  *
 174  * \return false if no resolve was needed
 175  */
 176 bool
 177 intel_renderbuffer_resolve_hiz(struct intel_context *intel,
 178                                struct intel_renderbuffer *irb);
 179
 180 /**
 181  * \brief Perform a depth resolve on the renderbuffer.
 182  *
 183  * It is safe to call this function on a renderbuffer without HiZ. In that
 184  * case, the function is a no-op.
 185  *
 186  * \return false if no resolve was needed
 187  */
 188 bool
 189 intel_renderbuffer_resolve_depth(struct intel_context *intel,
 190                                  struct intel_renderbuffer *irb);
 191
 192 #endif /* INTEL_FBO_H */