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