src/mesa/drivers/dri/radeon/radeon_buffer_objects.c

   1 /*
   2  * Copyright 2009 Maciej Cencora <m.cencora@gmail.com>
   3  *
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining
   7  * a 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, sublicense, 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
  16  * portions of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  19  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  21  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  22  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  23  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  24  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  */
  27
  28 #include "main/imports.h"
  29 #include "main/mtypes.h"
  30 #include "main/bufferobj.h"
  31
  32 #include "radeon_common.h"
  33 #include "radeon_buffer_objects.h"
  34
  35 struct radeon_buffer_object *
  36 get_radeon_buffer_object(struct gl_buffer_object *obj)
  37 {
  38     return (struct radeon_buffer_object *) obj;
  39 }
  40
  41 static struct gl_buffer_object *
  42 radeonNewBufferObject(struct gl_context * ctx,
  43                       GLuint name,
  44                       GLenum target)
  45 {
  46     struct radeon_buffer_object *obj = CALLOC_STRUCT(radeon_buffer_object);
  47
  48     _mesa_initialize_buffer_object(ctx, &obj->Base, name, target);
  49
  50     obj->bo = NULL;
  51
  52     return &obj->Base;
  53 }
  54
  55 /**
  56  * Called via glDeleteBuffersARB().
  57  */
  58 static void
  59 radeonDeleteBufferObject(struct gl_context * ctx,
  60                          struct gl_buffer_object *obj)
  61 {
  62     struct radeon_buffer_object *radeon_obj = get_radeon_buffer_object(obj);
  63     int i;
  64
  65     for (i = 0; i < MAP_COUNT; i++) {
  66        if (obj->Mappings[i].Pointer) {
  67            radeon_bo_unmap(radeon_obj->bo);
  68        }
  69     }
  70
  71     if (radeon_obj->bo) {
  72         radeon_bo_unref(radeon_obj->bo);
  73     }
  74
  75     free(radeon_obj);
  76 }
  77
  78
  79 /**
  80  * Allocate space for and store data in a buffer object.  Any data that was
  81  * previously stored in the buffer object is lost.  If data is NULL,
  82  * memory will be allocated, but no copy will occur.
  83  * Called via ctx->Driver.BufferData().
  84  * \return GL_TRUE for success, GL_FALSE if out of memory
  85  */
  86 static GLboolean
  87 radeonBufferData(struct gl_context * ctx,
  88                  GLenum target,
  89                  GLsizeiptrARB size,
  90                  const GLvoid * data,
  91                  GLenum usage,
  92                  GLbitfield storageFlags,
  93                  struct gl_buffer_object *obj)
  94 {
  95     radeonContextPtr radeon = RADEON_CONTEXT(ctx);
  96     struct radeon_buffer_object *radeon_obj = get_radeon_buffer_object(obj);
  97
  98     radeon_obj->Base.Size = size;
  99     radeon_obj->Base.Usage = usage;
 100     radeon_obj->Base.StorageFlags = storageFlags;
 101
 102     if (radeon_obj->bo != NULL) {
 103         radeon_bo_unref(radeon_obj->bo);
 104         radeon_obj->bo = NULL;
 105     }
 106
 107     if (size != 0) {
 108         radeon_obj->bo = radeon_bo_open(radeon->radeonScreen->bom,
 109                                         0,
 110                                         size,
 111                                         ctx->Const.MinMapBufferAlignment,
 112                                         RADEON_GEM_DOMAIN_GTT,
 113                                         0);
 114
 115         if (!radeon_obj->bo)
 116             return GL_FALSE;
 117
 118         if (data != NULL) {
 119             radeon_bo_map(radeon_obj->bo, GL_TRUE);
 120
 121             memcpy(radeon_obj->bo->ptr, data, size);
 122
 123             radeon_bo_unmap(radeon_obj->bo);
 124         }
 125     }
 126     return GL_TRUE;
 127 }
 128
 129 /**
 130  * Replace data in a subrange of buffer object.  If the data range
 131  * specified by size + offset extends beyond the end of the buffer or
 132  * if data is NULL, no copy is performed.
 133  * Called via glBufferSubDataARB().
 134  */
 135 static void
 136 radeonBufferSubData(struct gl_context * ctx,
 137                     GLintptrARB offset,
 138                     GLsizeiptrARB size,
 139                     const GLvoid * data,
 140                     struct gl_buffer_object *obj)
 141 {
 142     radeonContextPtr radeon = RADEON_CONTEXT(ctx);
 143     struct radeon_buffer_object *radeon_obj = get_radeon_buffer_object(obj);
 144
 145     if (radeon_bo_is_referenced_by_cs(radeon_obj->bo, radeon->cmdbuf.cs)) {
 146         radeon_firevertices(radeon);
 147     }
 148
 149     radeon_bo_map(radeon_obj->bo, GL_TRUE);
 150
 151     memcpy(radeon_obj->bo->ptr + offset, data, size);
 152
 153     radeon_bo_unmap(radeon_obj->bo);
 154 }
 155
 156 /**
 157  * Called via glGetBufferSubDataARB()
 158  */
 159 static void
 160 radeonGetBufferSubData(struct gl_context * ctx,
 161                        GLintptrARB offset,
 162                        GLsizeiptrARB size,
 163                        GLvoid * data,
 164                        struct gl_buffer_object *obj)
 165 {
 166     struct radeon_buffer_object *radeon_obj = get_radeon_buffer_object(obj);
 167
 168     radeon_bo_map(radeon_obj->bo, GL_FALSE);
 169
 170     memcpy(data, radeon_obj->bo->ptr + offset, size);
 171
 172     radeon_bo_unmap(radeon_obj->bo);
 173 }
 174
 175 /**
 176  * Called via glMapBuffer() and glMapBufferRange()
 177  */
 178 static void *
 179 radeonMapBufferRange(struct gl_context * ctx,
 180                      GLintptr offset, GLsizeiptr length,
 181                      GLbitfield access, struct gl_buffer_object *obj,
 182                      gl_map_buffer_index index)
 183 {
 184     struct radeon_buffer_object *radeon_obj = get_radeon_buffer_object(obj);
 185     const GLboolean write_only =
 186        (access & (GL_MAP_READ_BIT | GL_MAP_WRITE_BIT)) == GL_MAP_WRITE_BIT;
 187
 188     if (write_only) {
 189         ctx->Driver.Flush(ctx);
 190     }
 191
 192     if (radeon_obj->bo == NULL) {
 193         obj->Mappings[index].Pointer = NULL;
 194         return NULL;
 195     }
 196
 197     obj->Mappings[index].Offset = offset;
 198     obj->Mappings[index].Length = length;
 199     obj->Mappings[index].AccessFlags = access;
 200
 201     radeon_bo_map(radeon_obj->bo, write_only);
 202
 203     obj->Mappings[index].Pointer = radeon_obj->bo->ptr + offset;
 204     return obj->Mappings[index].Pointer;
 205 }
 206
 207
 208 /**
 209  * Called via glUnmapBufferARB()
 210  */
 211 static GLboolean
 212 radeonUnmapBuffer(struct gl_context * ctx,
 213                   struct gl_buffer_object *obj,
 214                   gl_map_buffer_index index)
 215 {
 216     struct radeon_buffer_object *radeon_obj = get_radeon_buffer_object(obj);
 217
 218     if (radeon_obj->bo != NULL) {
 219         radeon_bo_unmap(radeon_obj->bo);
 220     }
 221
 222     obj->Mappings[index].Pointer = NULL;
 223     obj->Mappings[index].Offset = 0;
 224     obj->Mappings[index].Length = 0;
 225
 226     return GL_TRUE;
 227 }
 228
 229 void
 230 radeonInitBufferObjectFuncs(struct dd_function_table *functions)
 231 {
 232     functions->NewBufferObject = radeonNewBufferObject;
 233     functions->DeleteBuffer = radeonDeleteBufferObject;
 234     functions->BufferData = radeonBufferData;
 235     functions->BufferSubData = radeonBufferSubData;
 236     functions->GetBufferSubData = radeonGetBufferSubData;
 237     functions->MapBufferRange = radeonMapBufferRange;
 238     functions->UnmapBuffer = radeonUnmapBuffer;
 239 }