| /* |
| * Copyright (C) 2009 Francisco Jerez. |
| * All Rights Reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining |
| * a copy of this software and associated documentation files (the |
| * "Software"), to deal in the Software without restriction, including |
| * without limitation the rights to use, copy, modify, merge, publish, |
| * distribute, sublicense, and/or sell copies of the Software, and to |
| * permit persons to whom the Software is furnished to do so, subject to |
| * the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the |
| * next paragraph) shall be included in all copies or substantial |
| * portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE |
| * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION |
| * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION |
| * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| * |
| */ |
| |
| #include "nouveau_driver.h" |
| #include "nouveau_bufferobj.h" |
| #include "nouveau_context.h" |
| |
| #include "main/bufferobj.h" |
| |
| static inline char * |
| get_bufferobj_map(struct gl_buffer_object *obj, unsigned flags) |
| { |
| struct nouveau_bufferobj *nbo = to_nouveau_bufferobj(obj); |
| void *map = NULL; |
| |
| if (nbo->sys) { |
| map = nbo->sys; |
| } else if (nbo->bo) { |
| nouveau_bo_map(nbo->bo, flags); |
| map = nbo->bo->map; |
| nouveau_bo_unmap(nbo->bo); |
| } |
| |
| return map; |
| } |
| |
| static struct gl_buffer_object * |
| nouveau_bufferobj_new(struct gl_context *ctx, GLuint buffer, GLenum target) |
| { |
| struct nouveau_bufferobj *nbo; |
| |
| nbo = CALLOC_STRUCT(nouveau_bufferobj); |
| if (!nbo) |
| return NULL; |
| |
| _mesa_initialize_buffer_object(&nbo->base, buffer, target); |
| |
| return &nbo->base; |
| } |
| |
| static void |
| nouveau_bufferobj_del(struct gl_context *ctx, struct gl_buffer_object *obj) |
| { |
| struct nouveau_bufferobj *nbo = to_nouveau_bufferobj(obj); |
| |
| nouveau_bo_ref(NULL, &nbo->bo); |
| FREE(nbo->sys); |
| FREE(nbo); |
| } |
| |
| static GLboolean |
| nouveau_bufferobj_data(struct gl_context *ctx, GLenum target, GLsizeiptrARB size, |
| const GLvoid *data, GLenum usage, |
| struct gl_buffer_object *obj) |
| { |
| struct nouveau_bufferobj *nbo = to_nouveau_bufferobj(obj); |
| int ret; |
| |
| obj->Size = size; |
| obj->Usage = usage; |
| |
| /* Free previous storage */ |
| nouveau_bo_ref(NULL, &nbo->bo); |
| FREE(nbo->sys); |
| |
| if (target == GL_ELEMENT_ARRAY_BUFFER_ARB || |
| (size < 512 && usage == GL_DYNAMIC_DRAW_ARB) || |
| context_chipset(ctx) < 0x10) { |
| /* Heuristic: keep it in system ram */ |
| nbo->sys = MALLOC(size); |
| |
| } else { |
| /* Get a hardware BO */ |
| ret = nouveau_bo_new(context_dev(ctx), |
| NOUVEAU_BO_GART | NOUVEAU_BO_MAP, 0, |
| size, &nbo->bo); |
| assert(!ret); |
| } |
| |
| if (data) |
| memcpy(get_bufferobj_map(obj, NOUVEAU_BO_WR), data, size); |
| |
| return GL_TRUE; |
| } |
| |
| static void |
| nouveau_bufferobj_subdata(struct gl_context *ctx, GLintptrARB offset, |
| GLsizeiptrARB size, const GLvoid *data, |
| struct gl_buffer_object *obj) |
| { |
| memcpy(get_bufferobj_map(obj, NOUVEAU_BO_WR) + offset, data, size); |
| } |
| |
| static void |
| nouveau_bufferobj_get_subdata(struct gl_context *ctx, GLintptrARB offset, |
| GLsizeiptrARB size, GLvoid *data, |
| struct gl_buffer_object *obj) |
| { |
| memcpy(data, get_bufferobj_map(obj, NOUVEAU_BO_RD) + offset, size); |
| } |
| |
| static void * |
| nouveau_bufferobj_map(struct gl_context *ctx, GLenum access, |
| struct gl_buffer_object *obj) |
| { |
| unsigned flags = 0; |
| |
| if (access == GL_READ_ONLY_ARB || |
| access == GL_READ_WRITE_ARB) |
| flags |= GL_MAP_READ_BIT; |
| if (access == GL_WRITE_ONLY_ARB || |
| access == GL_READ_WRITE_ARB) |
| flags |= GL_MAP_WRITE_BIT; |
| |
| return ctx->Driver.MapBufferRange(ctx, 0, 0, obj->Size, flags, |
| obj); |
| } |
| |
| static void * |
| nouveau_bufferobj_map_range(struct gl_context *ctx, GLenum target, GLintptr offset, |
| GLsizeiptr length, GLbitfield access, |
| struct gl_buffer_object *obj) |
| { |
| unsigned flags = 0; |
| char *map; |
| |
| assert(!obj->Pointer); |
| |
| if (access & GL_MAP_READ_BIT) |
| flags |= NOUVEAU_BO_RD; |
| if (access & GL_MAP_WRITE_BIT) |
| flags |= NOUVEAU_BO_WR; |
| if (access & GL_MAP_UNSYNCHRONIZED_BIT) |
| flags |= NOUVEAU_BO_NOSYNC; |
| |
| map = get_bufferobj_map(obj, flags); |
| if (!map) |
| return NULL; |
| |
| obj->Pointer = map + offset; |
| obj->Offset = offset; |
| obj->Length = length; |
| obj->AccessFlags = access; |
| |
| return obj->Pointer; |
| } |
| |
| static GLboolean |
| nouveau_bufferobj_unmap(struct gl_context *ctx, struct gl_buffer_object *obj) |
| { |
| assert(obj->Pointer); |
| |
| obj->Pointer = NULL; |
| obj->Offset = 0; |
| obj->Length = 0; |
| obj->AccessFlags = 0; |
| |
| return GL_TRUE; |
| } |
| |
| void |
| nouveau_bufferobj_functions_init(struct dd_function_table *functions) |
| { |
| functions->NewBufferObject = nouveau_bufferobj_new; |
| functions->DeleteBuffer = nouveau_bufferobj_del; |
| functions->BufferData = nouveau_bufferobj_data; |
| functions->BufferSubData = nouveau_bufferobj_subdata; |
| functions->GetBufferSubData = nouveau_bufferobj_get_subdata; |
| functions->MapBuffer = nouveau_bufferobj_map; |
| functions->MapBufferRange = nouveau_bufferobj_map_range; |
| functions->UnmapBuffer = nouveau_bufferobj_unmap; |
| } |