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/*
* 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, GLenum target, 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, GLenum target, 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;
}
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