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bufferobjects implementation layered on top of bm buffers

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This commit is contained in:
Keith Whitwell 2006-02-24 11:56:45 +00:00
parent b5d7c69884
commit 3d67655cce
2 changed files with 236 additions and 0 deletions
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191
src/mesa/drivers/dri/i915/intel_buffer_objects.c Normal file
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/**************************************************************************
*
* Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
* 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, sub license, 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 NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS 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 "imports.h"
#include "mtypes.h"
#include "bufferobj.h"
#include "intel_context.h"
#include "intel_buffer_objects.h"
#include "bufmgr.h"
struct intel_buffer_object {
struct gl_buffer_object Base;
GLuint buffer;
};
static inline struct intel_buffer_object *
intel_buffer_object( struct gl_buffer_object *obj )
{
return (struct intel_buffer_object *)obj;
}
/* There is some duplication between mesa's bufferobjects and our
* bufmgr buffers. Both have an integer handle and a hashtable to
* lookup an opaque structure. It would be nice if the handles and
* internal structure where somehow shared.
*/
static struct gl_buffer_object *intel_bufferobj_alloc( GLcontext *ctx,
GLuint name,
GLenum target )
{
struct intel_context *intel = intel_context(ctx);
struct intel_buffer_object *obj = MALLOC_STRUCT(intel_buffer_object);
_mesa_initialize_buffer_object(&obj->Base, name, target);
/* XXX: We generate our own handle, which is different to 'name' above.
*/
bmGenBuffers(intel->bm, &obj->buffer, 1);
return &obj->Base;
}
static void intel_bufferobj_free( GLcontext *ctx,
struct gl_buffer_object *obj )
{
/* Are the obj->Name tests necessary? Unfortunately yes, mesa
* allocates a couple of gl_buffer_object structs statically, and
* the Name == 0 test is the only way to identify them and avoid
* casting them erroneously to our structs.
*/
if (obj->Name) {
struct intel_context *intel = intel_context(ctx);
struct intel_buffer_object *intel_obj = intel_buffer_object(obj);
if (intel_obj->buffer)
bmDeleteBuffers( intel->bm, 1, &intel_obj->buffer );
_mesa_free(obj);
}
}
/* 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.
*/
static void intel_bufferobj_data( GLcontext *ctx,
GLenum target,
GLsizeiptrARB size,
const GLvoid *data,
GLenum usage,
struct gl_buffer_object *obj )
{
if (obj->Name) {
struct intel_context *intel = intel_context(ctx);
struct intel_buffer_object *intel_obj = intel_buffer_object(obj);
/* XXX: do something useful with 'usage' (eg. populate flags
* argument below)
*/
bmBufferData(intel->bm, obj->buffer, size, data, 0);
}
}
/* 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.
*/
static void intel_bufferobj_subdata( GLcontext *ctx,
GLenum target,
GLintptrARB offset,
GLsizeiptrARB size,
const GLvoid * data,
struct gl_buffer_object * obj )
{
if (obj->Name) {
struct intel_context *intel = intel_context(ctx);
struct intel_buffer_object *intel_obj = intel_buffer_object(obj);
bmBufferSubData(intel->bm, obj->buffer, size, data);
}
}
static void *intel_bufferobj_map( GLcontext *ctx,
GLenum target,
GLenum access,
struct gl_buffer_object *obj )
{
if (obj->Name) {
struct intel_context *intel = intel_context(ctx);
struct intel_buffer_object *intel_obj = intel_buffer_object(obj);
/* XXX: Translate access to flags arg below:
*/
return bmMapBuffer(intel->bm, intel_obj->buffer, 0);
}
return NULL;
}
static GLboolean intel_bufferobj_unmap( GLcontext *ctx,
GLenum target,
struct gl_buffer_object *obj )
{
if (obj->Name) {
struct intel_context *intel = intel_context(ctx);
struct intel_buffer_object *intel_obj = intel_buffer_object(obj);
return bmUnmapBuffer(intel->bm, intel_obj->buffer);
}
return GL_TRUE;
}
GLuint intel_bufferobj_buffer( struct gl_buffer_object *obj )
{
if (obj->Name) {
struct intel_buffer_object *intel_obj = intel_buffer_object(obj);
return intel_obj->buffer;
}
else {
assert(0);
return 0;
}
}
void intel_bufferobj_init( struct intel_context *intel )
{
GLcontext *ctx = &intel->ctx;
ctx->Driver.NewBufferObject = intel_new_buffer_object;
ctx->Driver.DeleteBuffer = intel_delete_buffer_object;
ctx->Driver.BufferData = intel_buffer_data;
ctx->Driver.BufferSubData = intel_buffer_subdata;
ctx->Driver.MapBuffer = intel_buffer_map;
ctx->Driver.UnmapBuffer = intel_buffer_unmap;
}

45
src/mesa/drivers/dri/i915/intel_buffer_objects.h Normal file
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/**************************************************************************
*
* Copyright 2005 Tungsten Graphics, Inc., Cedar Park, Texas.
* 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, sub license, 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 NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS 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.
*
**************************************************************************/
#ifndef INTEL_BUFFEROBJ_H
#define INTEL_BUFFEROBJ_H
#include "mtypes.h"
struct intel_context;
struct gl_buffer_object;
/* Get the bm buffer associated with a GL bufferobject:
*/
GLuint intel_bufferobj_buffer( struct intel_context *intel,
struct gl_buffer_object *obj );
/* Hook the bufferobject implementation into mesa:
*/
void intel_bufferobj_init( struct intel_context *intel );
#endif