src/gallium/drivers/iris/iris_resource.h

   1 /*
   2  * Copyright 2017 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * on the rights to use, copy, modify, merge, publish, distribute, sub
   8  * license, and/or sell copies of the Software, and to permit persons to whom
   9  * the Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  18  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  22  */
  23 #ifndef IRIS_RESOURCE_H
  24 #define IRIS_RESOURCE_H
  25
  26 #include "pipe/p_state.h"
  27 #include "util/u_inlines.h"
  28 #include "intel/isl/isl.h"
  29
  30 struct iris_format_info {
  31    enum isl_format fmt;
  32    struct isl_swizzle swizzle;
  33 };
  34
  35 #define IRIS_RESOURCE_FLAG_SHADER_MEMZONE  (PIPE_RESOURCE_FLAG_DRV_PRIV << 0)
  36 #define IRIS_RESOURCE_FLAG_SURFACE_MEMZONE (PIPE_RESOURCE_FLAG_DRV_PRIV << 1)
  37 #define IRIS_RESOURCE_FLAG_DYNAMIC_MEMZONE (PIPE_RESOURCE_FLAG_DRV_PRIV << 2)
  38
  39 /**
  40  * Resources represent a GPU buffer object or image (mipmap tree).
  41  *
  42  * They contain the storage (BO) and layout information (ISL surface).
  43  */
  44 struct iris_resource {
  45    struct pipe_resource base;
  46    enum pipe_format internal_format;
  47    struct isl_surf surf;
  48    struct iris_bo *bo;
  49 };
  50
  51 /**
  52  * A simple <resource, offset> tuple for storing a reference to a
  53  * piece of state stored in a GPU buffer object.
  54  */
  55 struct iris_state_ref {
  56    struct pipe_resource *res;
  57    uint32_t offset;
  58 };
  59
  60 /**
  61  * Gallium CSO for sampler views (texture views).
  62  *
  63  * In addition to the normal pipe_resource, this adds an ISL view
  64  * which may reinterpret the format or restrict levels/layers.
  65  *
  66  * These can also be linear texture buffers.
  67  */
  68 struct iris_sampler_view {
  69    struct pipe_sampler_view base;
  70    struct isl_view view;
  71
  72    /* A short-cut (not a reference) to the actual resource being viewed.
  73     * Multi-planar (or depth+stencil) images may have multiple resources
  74     * chained together; this skips having to traverse base->texture->*.
  75     */
  76    struct iris_resource *res;
  77
  78    /** The resource (BO) holding our SURFACE_STATE. */
  79    struct iris_state_ref surface_state;
  80 };
  81
  82 /**
  83  * Gallium CSO for surfaces (framebuffer attachments).
  84  *
  85  * A view of a surface that can be bound to a color render target or
  86  * depth/stencil attachment.
  87  */
  88 struct iris_surface {
  89    struct pipe_surface base;
  90    struct isl_view view;
  91
  92    /** The resource (BO) holding our SURFACE_STATE. */
  93    struct iris_state_ref surface_state;
  94 };
  95
  96 /**
  97  * Transfer object - information about a buffer mapping.
  98  */
  99 struct iris_transfer {
 100    struct pipe_transfer base;
 101    struct pipe_debug_callback *dbg;
 102    void *buffer;
 103    void *ptr;
 104
 105    void (*unmap)(struct iris_transfer *);
 106 };
 107
 108 /**
 109  * Unwrap a pipe_resource to get the underlying iris_bo (for convenience).
 110  */
 111 static inline struct iris_bo *
 112 iris_resource_bo(struct pipe_resource *p_res)
 113 {
 114    struct iris_resource *res = (void *) p_res;
 115    return res->bo;
 116 }
 117
 118 struct iris_format_info iris_format_for_usage(const struct gen_device_info *,
 119                                               enum pipe_format pf,
 120                                               isl_surf_usage_flags_t usage);
 121
 122 struct pipe_resource *iris_resource_get_separate_stencil(struct pipe_resource *);
 123
 124 void iris_get_depth_stencil_resources(struct pipe_resource *res,
 125                                       struct iris_resource **out_z,
 126                                       struct iris_resource **out_s);
 127
 128 void iris_init_screen_resource_functions(struct pipe_screen *pscreen);
 129
 130 #endif