/*
* Copyright 2009 Maciej Cencora <m.cencora@gmail.com>
*
* 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 "radeon_buffer_objects.h"
#include "main/imports.h"
#include "main/mtypes.h"
#include "main/bufferobj.h"
#include "radeon_common.h"
struct radeon_buffer_object *
get_radeon_buffer_object(struct gl_buffer_object *obj)
{
return (struct radeon_buffer_object *) obj;
}
static struct gl_buffer_object *
radeonNewBufferObject(struct gl_context * ctx,
GLuint name,
GLenum target)
{
struct radeon_buffer_object *obj = CALLOC_STRUCT(radeon_buffer_object);
_mesa_initialize_buffer_object(ctx, &obj->Base, name, target);
obj->bo = NULL;
return &obj->Base;
}
/**
* Called via glDeleteBuffersARB().
*/
static void
radeonDeleteBufferObject(struct gl_context * ctx,
struct gl_buffer_object *obj)
{
struct radeon_buffer_object *radeon_obj = get_radeon_buffer_object(obj);
if (obj->Pointer) {
radeon_bo_unmap(radeon_obj->bo);
}
if (radeon_obj->bo) {
radeon_bo_unref(radeon_obj->bo);
}
}
/**
* Allocate space for and store data in a buffer object. Any data that was
* previously stored in the buffer object is lost. If data is NULL,
* memory will be allocated, but no copy will occur.
* Called via ctx->Driver.BufferData().
* \return GL_TRUE for success, GL_FALSE if out of memory
*/
static GLboolean
radeonBufferData(struct gl_context * ctx,
GLenum target,
GLsizeiptrARB size,
const GLvoid * data,
GLenum usage,
struct gl_buffer_object *obj)
{
radeonContextPtr radeon = RADEON_CONTEXT(ctx);
struct radeon_buffer_object *radeon_obj = get_radeon_buffer_object(obj);
radeon_obj->Base.Size = size;
radeon_obj->Base.Usage = usage;
if (radeon_obj->bo != NULL) {
radeon_bo_unref(radeon_obj->bo);
radeon_obj->bo = NULL;
}
if (size != 0) {
radeon_obj->bo = radeon_bo_open(radeon->radeonScreen->bom,
0,
size,
32,
RADEON_GEM_DOMAIN_GTT,
0);
if (!radeon_obj->bo)
return GL_FALSE;
if (data != NULL) {
radeon_bo_map(radeon_obj->bo, GL_TRUE);
memcpy(radeon_obj
->bo
->ptr
, data
, size
);
radeon_bo_unmap(radeon_obj->bo);
}
}
return GL_TRUE;
}
/**
* Replace data in a subrange of buffer object. If the data range
* specified by size + offset extends beyond the end of the buffer or
* if data is NULL, no copy is performed.
* Called via glBufferSubDataARB().
*/
static void
radeonBufferSubData(struct gl_context * ctx,
GLintptrARB offset,
GLsizeiptrARB size,
const GLvoid * data,
struct gl_buffer_object *obj)
{
radeonContextPtr radeon = RADEON_CONTEXT(ctx);
struct radeon_buffer_object *radeon_obj = get_radeon_buffer_object(obj);
if (radeon_bo_is_referenced_by_cs(radeon_obj->bo, radeon->cmdbuf.cs)) {
radeon_firevertices(radeon);
}
radeon_bo_map(radeon_obj->bo, GL_TRUE);
memcpy(radeon_obj
->bo
->ptr
+ offset
, data
, size
);
radeon_bo_unmap(radeon_obj->bo);
}
/**
* Called via glGetBufferSubDataARB()
*/
static void
radeonGetBufferSubData(struct gl_context * ctx,
GLintptrARB offset,
GLsizeiptrARB size,
GLvoid * data,
struct gl_buffer_object *obj)
{
struct radeon_buffer_object *radeon_obj = get_radeon_buffer_object(obj);
radeon_bo_map(radeon_obj->bo, GL_FALSE);
memcpy(data
, radeon_obj
->bo
->ptr
+ offset
, size
);
radeon_bo_unmap(radeon_obj->bo);
}
/**
* Called via glMapBuffer() and glMapBufferRange()
*/
static void *
radeonMapBufferRange(struct gl_context * ctx,
GLintptr offset, GLsizeiptr length,
GLbitfield access, struct gl_buffer_object *obj)
{
struct radeon_buffer_object *radeon_obj = get_radeon_buffer_object(obj);
const GLboolean write_only =
(access & (GL_MAP_READ_BIT | GL_MAP_WRITE_BIT)) == GL_MAP_WRITE_BIT;
if (write_only) {
ctx->Driver.Flush(ctx);
}
if (radeon_obj->bo == NULL) {
obj->Pointer = NULL;
return NULL;
}
obj->Offset = offset;
obj->Length = length;
obj->AccessFlags = access;
radeon_bo_map(radeon_obj->bo, write_only);
obj->Pointer = radeon_obj->bo->ptr + offset;
return obj->Pointer;
}
/**
* Called via glUnmapBufferARB()
*/
static GLboolean
radeonUnmapBuffer(struct gl_context * ctx,
struct gl_buffer_object *obj)
{
struct radeon_buffer_object *radeon_obj = get_radeon_buffer_object(obj);
if (radeon_obj->bo != NULL) {
radeon_bo_unmap(radeon_obj->bo);
}
obj->Pointer = NULL;
obj->Offset = 0;
obj->Length = 0;
return GL_TRUE;
}
void
radeonInitBufferObjectFuncs(struct dd_function_table *functions)
{
functions->NewBufferObject = radeonNewBufferObject;
functions->DeleteBuffer = radeonDeleteBufferObject;
functions->BufferData = radeonBufferData;
functions->BufferSubData = radeonBufferSubData;
functions->GetBufferSubData = radeonGetBufferSubData;
functions->MapBufferRange = radeonMapBufferRange;
functions->UnmapBuffer = radeonUnmapBuffer;
}