+++ /dev/null
-/**************************************************************************
- *
- * 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 "intel_regions.h"
-#include "dri_bufmgr.h"
-
-/** Allocates a new dri_bo to store the data for the buffer object. */
-static void
-intel_bufferobj_alloc_buffer(struct intel_context *intel,
- struct intel_buffer_object *intel_obj)
-{
- intel_obj->buffer = dri_bo_alloc(intel->intelScreen->bufmgr, "bufferobj",
- intel_obj->Base.Size, 64,
- DRM_BO_FLAG_MEM_LOCAL | DRM_BO_FLAG_CACHED | DRM_BO_FLAG_CACHED_MAPPED);
-}
-
-/**
- * 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_buffer_object *obj = CALLOC_STRUCT(intel_buffer_object);
-
- _mesa_initialize_buffer_object(&obj->Base, name, target);
-
- obj->buffer = NULL;
-
- return &obj->Base;
-}
-
-/* Break the COW tie to the region. The region gets to keep the data.
- */
-void
-intel_bufferobj_release_region(struct intel_context *intel,
- struct intel_buffer_object *intel_obj)
-{
- assert(intel_obj->region->buffer == intel_obj->buffer);
- intel_obj->region->pbo = NULL;
- intel_obj->region = NULL;
-
- dri_bo_unreference(intel_obj->buffer);
- intel_obj->buffer = NULL;
-}
-
-/* Break the COW tie to the region. Both the pbo and the region end
- * up with a copy of the data.
- */
-void
-intel_bufferobj_cow(struct intel_context *intel,
- struct intel_buffer_object *intel_obj)
-{
- assert(intel_obj->region);
- intel_region_cow(intel->intelScreen, intel_obj->region);
-}
-
-
-/**
- * Deallocate/free a vertex/pixel buffer object.
- * Called via glDeleteBuffersARB().
- */
-static void
-intel_bufferobj_free(GLcontext * ctx, struct gl_buffer_object *obj)
-{
- struct intel_context *intel = intel_context(ctx);
- struct intel_buffer_object *intel_obj = intel_buffer_object(obj);
-
- assert(intel_obj);
-
- if (intel_obj->region) {
- intel_bufferobj_release_region(intel, intel_obj);
- }
- else if (intel_obj->buffer) {
- dri_bo_unreference(intel_obj->buffer);
- }
-
- _mesa_free(intel_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.
- * Called via glBufferDataARB().
- */
-static void
-intel_bufferobj_data(GLcontext * ctx,
- GLenum target,
- GLsizeiptrARB size,
- const GLvoid * data,
- GLenum usage, struct gl_buffer_object *obj)
-{
- struct intel_context *intel = intel_context(ctx);
- struct intel_buffer_object *intel_obj = intel_buffer_object(obj);
-
- intel_obj->Base.Size = size;
- intel_obj->Base.Usage = usage;
-
- if (intel_obj->region)
- intel_bufferobj_release_region(intel, intel_obj);
-
- if (intel_obj->buffer != NULL && intel_obj->buffer->size != size) {
- dri_bo_unreference(intel_obj->buffer);
- intel_obj->buffer = NULL;
- }
-
- intel_bufferobj_alloc_buffer(intel, intel_obj);
-
- if (data != NULL)
- dri_bo_subdata(intel_obj->buffer, 0, size, data);
-}
-
-
-/**
- * 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
-intel_bufferobj_subdata(GLcontext * ctx,
- GLenum target,
- GLintptrARB offset,
- GLsizeiptrARB size,
- const GLvoid * data, struct gl_buffer_object *obj)
-{
- struct intel_context *intel = intel_context(ctx);
- struct intel_buffer_object *intel_obj = intel_buffer_object(obj);
-
- assert(intel_obj);
-
- if (intel_obj->region)
- intel_bufferobj_cow(intel, intel_obj);
-
- dri_bo_subdata(intel_obj->buffer, offset, size, data);
-}
-
-
-/**
- * Called via glGetBufferSubDataARB().
- */
-static void
-intel_bufferobj_get_subdata(GLcontext * ctx,
- GLenum target,
- GLintptrARB offset,
- GLsizeiptrARB size,
- GLvoid * data, struct gl_buffer_object *obj)
-{
- struct intel_buffer_object *intel_obj = intel_buffer_object(obj);
-
- assert(intel_obj);
- dri_bo_get_subdata(intel_obj->buffer, offset, size, data);
-}
-
-
-
-/**
- * Called via glMapBufferARB().
- */
-static void *
-intel_bufferobj_map(GLcontext * ctx,
- GLenum target,
- GLenum access, struct gl_buffer_object *obj)
-{
- struct intel_context *intel = intel_context(ctx);
- struct intel_buffer_object *intel_obj = intel_buffer_object(obj);
-
- /* XXX: Translate access to flags arg below:
- */
- assert(intel_obj);
-
- if (intel_obj->region)
- intel_bufferobj_cow(intel, intel_obj);
-
- if (intel_obj->buffer == NULL) {
- obj->Pointer = NULL;
- return NULL;
- }
-
- dri_bo_map(intel_obj->buffer, GL_TRUE);
- obj->Pointer = intel_obj->buffer->virtual;
- return obj->Pointer;
-}
-
-
-/**
- * Called via glMapBufferARB().
- */
-static GLboolean
-intel_bufferobj_unmap(GLcontext * ctx,
- GLenum target, struct gl_buffer_object *obj)
-{
- struct intel_buffer_object *intel_obj = intel_buffer_object(obj);
-
- assert(intel_obj);
- if (intel_obj->buffer != NULL) {
- assert(obj->Pointer);
- dri_bo_unmap(intel_obj->buffer);
- obj->Pointer = NULL;
- }
- return GL_TRUE;
-}
-
-dri_bo *
-intel_bufferobj_buffer(struct intel_context *intel,
- struct intel_buffer_object *intel_obj, GLuint flag)
-{
- if (intel_obj->region) {
- if (flag == INTEL_WRITE_PART)
- intel_bufferobj_cow(intel, intel_obj);
- else if (flag == INTEL_WRITE_FULL) {
- intel_bufferobj_release_region(intel, intel_obj);
- intel_bufferobj_alloc_buffer(intel, intel_obj);
- }
- }
-
- return intel_obj->buffer;
-}
-
-void
-intel_bufferobj_init(struct intel_context *intel)
-{
- GLcontext *ctx = &intel->ctx;
-
- ctx->Driver.NewBufferObject = intel_bufferobj_alloc;
- ctx->Driver.DeleteBuffer = intel_bufferobj_free;
- ctx->Driver.BufferData = intel_bufferobj_data;
- ctx->Driver.BufferSubData = intel_bufferobj_subdata;
- ctx->Driver.GetBufferSubData = intel_bufferobj_get_subdata;
- ctx->Driver.MapBuffer = intel_bufferobj_map;
- ctx->Driver.UnmapBuffer = intel_bufferobj_unmap;
-}
projects / mesa.git / blobdiff