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 gl_renderbuffer Base;
  47    struct intel_mipmap_tree *mt; /**< The renderbuffer storage. */
  48    drm_intel_bo *map_bo;
  49
  50    void *map_buffer;
  51    GLuint map_x, map_y, map_w, map_h;
  52    GLbitfield map_mode;
  53
  54    /**
  55     * \name Packed depth/stencil unwrappers
  56     *
  57     * If the intel_context is using separate stencil and this renderbuffer has
  58     * a packed depth/stencil format, then wrapped_depth and wrapped_stencil
  59     * are the real renderbuffers.
  60     */
  61    struct gl_renderbuffer *wrapped_depth;
  62    struct gl_renderbuffer *wrapped_stencil;
  63    /** \} */
  64
  65    GLuint draw_x, draw_y; /**< Offset of drawing within the region */
  66 };
  67
  68
  69 /**
  70  * gl_renderbuffer is a base class which we subclass.  The Class field
  71  * is used for simple run-time type checking.
  72  */
  73 #define INTEL_RB_CLASS 0x12345678
  74
  75
  76 /**
  77  * Return a gl_renderbuffer ptr casted to intel_renderbuffer.
  78  * NULL will be returned if the rb isn't really an intel_renderbuffer.
  79  * This is determined by checking the ClassID.
  80  */
  81 static INLINE struct intel_renderbuffer *
  82 intel_renderbuffer(struct gl_renderbuffer *rb)
  83 {
  84    struct intel_renderbuffer *irb = (struct intel_renderbuffer *) rb;
  85    if (irb && irb->Base.ClassID == INTEL_RB_CLASS) {
  86       /*_mesa_warning(NULL, "Returning non-intel Rb\n");*/
  87       return irb;
  88    }
  89    else
  90       return NULL;
  91 }
  92
  93
  94 /**
  95  * \brief Return the framebuffer attachment specified by attIndex.
  96  *
  97  * If the framebuffer lacks the specified attachment, then return null.
  98  *
  99  * If the attached renderbuffer is a wrapper, then return wrapped
 100  * renderbuffer.
 101  */
 102 static INLINE struct intel_renderbuffer *
 103 intel_get_renderbuffer(struct gl_framebuffer *fb, gl_buffer_index attIndex)
 104 {
 105    struct gl_renderbuffer *rb;
 106    struct intel_renderbuffer *irb;
 107
 108    assert((unsigned)attIndex < ARRAY_SIZE(fb->Attachment));
 109
 110    rb = fb->Attachment[attIndex].Renderbuffer;
 111    if (!rb)
 112       return NULL;
 113
 114    irb = intel_renderbuffer(rb);
 115    if (!irb)
 116       return NULL;
 117
 118    switch (attIndex) {
 119    case BUFFER_DEPTH:
 120       if (irb->wrapped_depth) {
 121          irb = intel_renderbuffer(irb->wrapped_depth);
 122       }
 123       break;
 124    case BUFFER_STENCIL:
 125       if (irb->wrapped_stencil) {
 126          irb = intel_renderbuffer(irb->wrapped_stencil);
 127       }
 128       break;
 129    default:
 130       break;
 131    }
 132
 133    return irb;
 134 }
 135
 136 bool
 137 intel_framebuffer_has_hiz(struct gl_framebuffer *fb);
 138
 139 extern struct intel_renderbuffer *
 140 intel_create_renderbuffer(gl_format format);
 141
 142 struct gl_renderbuffer*
 143 intel_create_wrapped_renderbuffer(struct gl_context * ctx,
 144                                   int width, int height,
 145                                   gl_format format);
 146
 147 GLboolean
 148 intel_alloc_renderbuffer_storage(struct gl_context * ctx,
 149                                  struct gl_renderbuffer *rb,
 150                                  GLenum internalFormat,
 151                                  GLuint width, GLuint height);
 152
 153 extern void
 154 intel_fbo_init(struct intel_context *intel);
 155
 156
 157 extern void
 158 intel_flip_renderbuffers(struct gl_framebuffer *fb);
 159
 160 void
 161 intel_renderbuffer_set_draw_offset(struct intel_renderbuffer *irb,
 162                                    struct intel_texture_image *intel_image,
 163                                    int zoffset);
 164
 165 uint32_t
 166 intel_renderbuffer_tile_offsets(struct intel_renderbuffer *irb,
 167                                 uint32_t *tile_x,
 168                                 uint32_t *tile_y);
 169
 170 struct intel_region*
 171 intel_get_rb_region(struct gl_framebuffer *fb, GLuint attIndex);
 172
 173 #endif /* INTEL_FBO_H */