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      1 /*
      2  * Copyright  2014 Broadcom
      3  * Copyright (C) 2012 Rob Clark <robclark (at) freedesktop.org>
      4  *
      5  * Permission is hereby granted, free of charge, to any person obtaining a
      6  * copy of this software and associated documentation files (the "Software"),
      7  * to deal in the Software without restriction, including without limitation
      8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
      9  * and/or sell copies of the Software, and to permit persons to whom the
     10  * Software is furnished to do so, subject to the following conditions:
     11  *
     12  * The above copyright notice and this permission notice (including the next
     13  * paragraph) shall be included in all copies or substantial portions of the
     14  * Software.
     15  *
     16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
     21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
     22  * IN THE SOFTWARE.
     23  */
     24 
     25 #ifndef VC4_RESOURCE_H
     26 #define VC4_RESOURCE_H
     27 
     28 #include "vc4_screen.h"
     29 #include "kernel/vc4_packet.h"
     30 #include "util/u_transfer.h"
     31 
     32 struct vc4_transfer {
     33         struct pipe_transfer base;
     34         void *map;
     35 
     36         struct pipe_resource *ss_resource;
     37         struct pipe_box ss_box;
     38 };
     39 
     40 struct vc4_resource_slice {
     41         uint32_t offset;
     42         uint32_t stride;
     43         uint32_t size;
     44         /** One of VC4_TILING_FORMAT_* */
     45         uint8_t tiling;
     46 };
     47 
     48 struct vc4_surface {
     49         struct pipe_surface base;
     50         uint32_t offset;
     51         uint8_t tiling;
     52 };
     53 
     54 struct vc4_resource {
     55         struct u_resource base;
     56         struct vc4_bo *bo;
     57         struct vc4_resource_slice slices[VC4_MAX_MIP_LEVELS];
     58         uint32_t cube_map_stride;
     59         int cpp;
     60         bool tiled;
     61         /** One of VC4_TEXTURE_TYPE_* */
     62         enum vc4_texture_data_type vc4_format;
     63 
     64         /**
     65          * Number of times the resource has been written to.
     66          *
     67          * This is used to track when we need to update this shadow resource
     68          * from its parent in the case of GL_TEXTURE_BASE_LEVEL (which we
     69          * can't support in hardware) or GL_UNSIGNED_INTEGER index buffers.
     70          */
     71         uint64_t writes;
     72 
     73         /**
     74          * Bitmask of PIPE_CLEAR_COLOR0, PIPE_CLEAR_DEPTH, PIPE_CLEAR_STENCIL
     75          * for which parts of the resource are defined.
     76          *
     77          * Used for avoiding fallback to quad clears for clearing just depth,
     78          * when the stencil contents have never been initialized.  Note that
     79          * we're lazy and fields not present in the buffer (DEPTH in a color
     80          * buffer) may get marked.
     81          */
     82         uint32_t initialized_buffers;
     83 
     84         /**
     85          * Resource containing the non-GL_TEXTURE_BASE_LEVEL-rebased texture
     86          * contents, or the 4-byte index buffer.
     87          *
     88          * If the parent is set for an texture, then this resource is actually
     89          * the texture contents just starting from the sampler_view's
     90          * first_level.
     91          *
     92          * If the parent is set for an index index buffer, then this resource
     93          * is actually a shadow containing a 2-byte index buffer starting from
     94          * the ib's offset.
     95          */
     96         struct pipe_resource *shadow_parent;
     97 };
     98 
     99 static inline struct vc4_resource *
    100 vc4_resource(struct pipe_resource *prsc)
    101 {
    102         return (struct vc4_resource *)prsc;
    103 }
    104 
    105 static inline struct vc4_surface *
    106 vc4_surface(struct pipe_surface *psurf)
    107 {
    108         return (struct vc4_surface *)psurf;
    109 }
    110 
    111 static inline struct vc4_transfer *
    112 vc4_transfer(struct pipe_transfer *ptrans)
    113 {
    114         return (struct vc4_transfer *)ptrans;
    115 }
    116 
    117 void vc4_resource_screen_init(struct pipe_screen *pscreen);
    118 void vc4_resource_context_init(struct pipe_context *pctx);
    119 struct pipe_resource *vc4_resource_create(struct pipe_screen *pscreen,
    120                                           const struct pipe_resource *tmpl);
    121 void vc4_update_shadow_baselevel_texture(struct pipe_context *pctx,
    122                                          struct pipe_sampler_view *view);
    123 struct pipe_resource *vc4_get_shadow_index_buffer(struct pipe_context *pctx,
    124                                                   const struct pipe_index_buffer *ib,
    125                                                   uint32_t count,
    126                                                   uint32_t *offset);
    127 void vc4_dump_surface(struct pipe_surface *psurf);
    128 
    129 #endif /* VC4_RESOURCE_H */
    130