Home | History | Annotate | Download | only in i915 
      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_REGIONS_H
     29 #define INTEL_REGIONS_H
     30 
     31 /** @file intel_regions.h
     32  *
     33  * Structure definitions and prototypes for intel_region handling,
     34  * which is the basic structure for rectangular collections of pixels
     35  * stored in a drm_intel_bo.
     36  */
     37 
     38 #include <stdbool.h>
     39 #include <xf86drm.h>
     40 
     41 #include "main/mtypes.h"
     42 #include "intel_bufmgr.h"
     43 
     44 struct intel_context;
     45 struct intel_screen;
     46 struct intel_buffer_object;
     47 
     48 /**
     49  * A layer on top of the bufmgr buffers that adds a few useful things:
     50  *
     51  * - Refcounting for local buffer references.
     52  * - Refcounting for buffer maps
     53  * - Buffer dimensions - pitch and height.
     54  * - Blitter commands for copying 2D regions between buffers. (really???)
     55  */
     56 struct intel_region
     57 {
     58    drm_intel_bo *bo;  /**< buffer manager's buffer */
     59    GLuint refcount; /**< Reference count for region */
     60    GLuint cpp;      /**< bytes per pixel */
     61    GLuint width;    /**< in pixels */
     62    GLuint height;   /**< in pixels */
     63    GLuint pitch;    /**< in bytes */
     64 
     65    uint32_t tiling; /**< Which tiling mode the region is in */
     66 
     67    uint32_t name; /**< Global name for the bo */
     68 };
     69 
     70 
     71 /* Allocate a refcounted region.  Pointers to regions should only be
     72  * copied by calling intel_reference_region().
     73  */
     74 struct intel_region *intel_region_alloc(struct intel_screen *screen,
     75                                         uint32_t tiling,
     76 					GLuint cpp, GLuint width,
     77                                         GLuint height,
     78 					bool expect_accelerated_upload);
     79 
     80 struct intel_region *
     81 intel_region_alloc_for_handle(struct intel_screen *screen,
     82 			      GLuint cpp,
     83 			      GLuint width, GLuint height, GLuint pitch,
     84 			      unsigned int handle, const char *name);
     85 
     86 struct intel_region *
     87 intel_region_alloc_for_fd(struct intel_screen *screen,
     88                           GLuint cpp,
     89                           GLuint width, GLuint height, GLuint pitch,
     90                           GLuint size, int fd, const char *name);
     91 
     92 bool
     93 intel_region_flink(struct intel_region *region, uint32_t *name);
     94 
     95 void intel_region_reference(struct intel_region **dst,
     96                             struct intel_region *src);
     97 
     98 void intel_region_release(struct intel_region **ib);
     99 
    100 void intel_recreate_static_regions(struct intel_context *intel);
    101 
    102 void
    103 intel_region_get_tile_masks(struct intel_region *region,
    104                             uint32_t *mask_x, uint32_t *mask_y);
    105 
    106 uint32_t
    107 intel_region_get_aligned_offset(struct intel_region *region, uint32_t x,
    108                                 uint32_t y);
    109 
    110 /**
    111  * Used with images created with image_from_names
    112  * to help support planar images.
    113  */
    114 struct intel_image_format {
    115    int fourcc;
    116    int components;
    117    int nplanes;
    118    struct {
    119       int buffer_index;
    120       int width_shift;
    121       int height_shift;
    122       uint32_t dri_format;
    123       int cpp;
    124    } planes[3];
    125 };
    126 
    127 struct __DRIimageRec {
    128    struct intel_region *region;
    129    GLenum internal_format;
    130    uint32_t dri_format;
    131    GLuint format;
    132    uint32_t offset;
    133 
    134    /*
    135     * Need to save these here between calls to
    136     * image_from_names and calls to image_from_planar.
    137     */
    138    uint32_t strides[3];
    139    uint32_t offsets[3];
    140    struct intel_image_format *planar_format;
    141 
    142    /* particular miptree level */
    143    GLuint width;
    144    GLuint height;
    145    GLuint tile_x;
    146    GLuint tile_y;
    147 
    148    void *data;
    149 };
    150 
    151 #endif
    152