src/gallium/drivers/r300/r300_screen_buffer.h

   1 /*
   2  * Copyright 2010 Red Hat Inc.
   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  * Authors: Dave Airlie
  24  */
  25
  26 #ifndef R300_SCREEN_BUFFER_H
  27 #define R300_SCREEN_BUFFER_H
  28
  29 #include <stdio.h>
  30 #include "pipe/p_compiler.h"
  31 #include "pipe/p_state.h"
  32 #include "util/u_transfer.h"
  33
  34 #include "r300_screen.h"
  35 #include "r300_winsys.h"
  36 #include "r300_context.h"
  37
  38 #define R300_BUFFER_MAGIC 0xabcd1234
  39 #define R300_BUFFER_MAX_RANGES 32
  40
  41 struct r300_buffer_range {
  42     uint32_t start;
  43     uint32_t end;
  44 };
  45
  46 /* Vertex buffer. */
  47 struct r300_buffer
  48 {
  49     struct u_resource b;
  50
  51     uint32_t magic;
  52
  53     struct r300_winsys_buffer *buf;
  54
  55     void *user_buffer;
  56     struct r300_buffer_range ranges[R300_BUFFER_MAX_RANGES];
  57     unsigned num_ranges;
  58
  59     void *map;
  60 };
  61
  62 /* Functions. */
  63
  64 int r300_upload_user_buffers(struct r300_context *r300);
  65
  66 int r300_upload_index_buffer(struct r300_context *r300,
  67                              struct pipe_resource **index_buffer,
  68                              unsigned index_size,
  69                              unsigned start,
  70                              unsigned count);
  71
  72 struct pipe_resource *r300_buffer_create(struct pipe_screen *screen,
  73                                          const struct pipe_resource *templ);
  74
  75 struct pipe_resource *r300_user_buffer_create(struct pipe_screen *screen,
  76                                               void *ptr,
  77                                               unsigned bytes,
  78                                               unsigned usage);
  79
  80 /* Inline functions. */
  81
  82 static INLINE struct r300_buffer *r300_buffer(struct pipe_resource *buffer)
  83 {
  84     if (buffer) {
  85         assert(((struct r300_buffer *)buffer)->magic == R300_BUFFER_MAGIC);
  86         return (struct r300_buffer *)buffer;
  87     }
  88     return NULL;
  89 }
  90
  91 static INLINE boolean r300_buffer_is_user_buffer(struct pipe_resource *buffer)
  92 {
  93     return r300_buffer(buffer)->user_buffer ? true : false;
  94 }
  95
  96 static INLINE boolean r300_add_buffer(struct r300_winsys_screen *rws,
  97                                       struct pipe_resource *buffer,
  98                                       int rd, int wr)
  99 {
 100     struct r300_buffer *buf = r300_buffer(buffer);
 101
 102     if (!buf->buf)
 103         return true;
 104
 105     return rws->add_buffer(rws, buf->buf, rd, wr);
 106 }
 107
 108 static INLINE boolean r300_add_texture(struct r300_winsys_screen *rws,
 109                                        struct r300_texture *tex,
 110                                        int rd, int wr)
 111 {
 112     return rws->add_buffer(rws, tex->buffer, rd, wr);
 113 }
 114
 115 static INLINE void r300_buffer_write_reloc(struct r300_winsys_screen *rws,
 116                                       struct r300_buffer *buf,
 117                                       uint32_t rd, uint32_t wd, uint32_t flags)
 118 {
 119     if (!buf->buf)
 120         return;
 121
 122     rws->write_cs_reloc(rws, buf->buf, rd, wd, flags);
 123 }
 124
 125 static INLINE void r300_texture_write_reloc(struct r300_winsys_screen *rws,
 126                                             struct r300_texture *texture,
 127                                             uint32_t rd, uint32_t wd, uint32_t flags)
 128 {
 129     rws->write_cs_reloc(rws, texture->buffer, rd, wd, flags);
 130 }
 131
 132 #endif