77d8fbcfd4
v2: move the flagging from intel_bufferobj_data to intel_bufferobj_alloc_buffer Reviewed-by: Brian Paul <brianp@vmware.com> Reviewed-by: Eric Anholt <eric@anholt.net>
423 lines
12 KiB
C
423 lines
12 KiB
C
/**************************************************************************
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*
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* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
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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 a
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* 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, sub license, 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 portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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/**
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* Functions for pixel buffer objects and vertex/element buffer objects.
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*/
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#include "main/imports.h"
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#include "main/mtypes.h"
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#include "main/arrayobj.h"
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#include "main/bufferobj.h"
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#include "st_context.h"
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#include "st_cb_bufferobjects.h"
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#include "st_debug.h"
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#include "pipe/p_context.h"
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#include "pipe/p_defines.h"
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#include "util/u_inlines.h"
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/**
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* There is some duplication between mesa's bufferobjects and our
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* bufmgr buffers. Both have an integer handle and a hashtable to
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* lookup an opaque structure. It would be nice if the handles and
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* internal structure where somehow shared.
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*/
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static struct gl_buffer_object *
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st_bufferobj_alloc(struct gl_context *ctx, GLuint name, GLenum target)
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{
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struct st_buffer_object *st_obj = ST_CALLOC_STRUCT(st_buffer_object);
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if (!st_obj)
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return NULL;
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_mesa_initialize_buffer_object(ctx, &st_obj->Base, name, target);
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return &st_obj->Base;
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}
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/**
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* Deallocate/free a vertex/pixel buffer object.
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* Called via glDeleteBuffersARB().
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*/
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static void
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st_bufferobj_free(struct gl_context *ctx, struct gl_buffer_object *obj)
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{
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struct st_buffer_object *st_obj = st_buffer_object(obj);
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assert(obj->RefCount == 0);
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assert(st_obj->transfer == NULL);
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if (st_obj->buffer)
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pipe_resource_reference(&st_obj->buffer, NULL);
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free(st_obj);
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}
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/**
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* Replace data in a subrange of buffer object. If the data range
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* specified by size + offset extends beyond the end of the buffer or
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* if data is NULL, no copy is performed.
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* Called via glBufferSubDataARB().
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*/
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static void
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st_bufferobj_subdata(struct gl_context *ctx,
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GLintptrARB offset,
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GLsizeiptrARB size,
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const GLvoid * data, struct gl_buffer_object *obj)
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{
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struct st_buffer_object *st_obj = st_buffer_object(obj);
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/* we may be called from VBO code, so double-check params here */
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ASSERT(offset >= 0);
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ASSERT(size >= 0);
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ASSERT(offset + size <= obj->Size);
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if (!size)
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return;
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/*
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* According to ARB_vertex_buffer_object specification, if data is null,
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* then the contents of the buffer object's data store is undefined. We just
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* ignore, and leave it unchanged.
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*/
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if (!data)
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return;
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if (!st_obj->buffer) {
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/* we probably ran out of memory during buffer allocation */
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return;
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}
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/* Now that transfers are per-context, we don't have to figure out
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* flushing here. Usually drivers won't need to flush in this case
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* even if the buffer is currently referenced by hardware - they
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* just queue the upload as dma rather than mapping the underlying
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* buffer directly.
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*/
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pipe_buffer_write(st_context(ctx)->pipe,
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st_obj->buffer,
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offset, size, data);
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}
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/**
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* Called via glGetBufferSubDataARB().
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*/
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static void
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st_bufferobj_get_subdata(struct gl_context *ctx,
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GLintptrARB offset,
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GLsizeiptrARB size,
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GLvoid * data, struct gl_buffer_object *obj)
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{
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struct st_buffer_object *st_obj = st_buffer_object(obj);
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/* we may be called from VBO code, so double-check params here */
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ASSERT(offset >= 0);
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ASSERT(size >= 0);
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ASSERT(offset + size <= obj->Size);
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if (!size)
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return;
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if (!st_obj->buffer) {
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/* we probably ran out of memory during buffer allocation */
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return;
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}
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pipe_buffer_read(st_context(ctx)->pipe, st_obj->buffer,
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offset, size, data);
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}
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/**
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* Allocate space for and store data in a buffer object. Any data that was
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* previously stored in the buffer object is lost. If data is NULL,
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* memory will be allocated, but no copy will occur.
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* Called via ctx->Driver.BufferData().
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* \return GL_TRUE for success, GL_FALSE if out of memory
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*/
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static GLboolean
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st_bufferobj_data(struct gl_context *ctx,
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GLenum target,
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GLsizeiptrARB size,
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const GLvoid * data,
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GLenum usage,
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struct gl_buffer_object *obj)
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{
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struct st_context *st = st_context(ctx);
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struct pipe_context *pipe = st->pipe;
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struct st_buffer_object *st_obj = st_buffer_object(obj);
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unsigned bind, pipe_usage;
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st_obj->Base.Size = size;
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st_obj->Base.Usage = usage;
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switch(target) {
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case GL_PIXEL_PACK_BUFFER_ARB:
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case GL_PIXEL_UNPACK_BUFFER_ARB:
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bind = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
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break;
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case GL_ARRAY_BUFFER_ARB:
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bind = PIPE_BIND_VERTEX_BUFFER;
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break;
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case GL_ELEMENT_ARRAY_BUFFER_ARB:
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bind = PIPE_BIND_INDEX_BUFFER;
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break;
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case GL_TEXTURE_BUFFER:
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bind = PIPE_BIND_SAMPLER_VIEW;
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break;
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case GL_TRANSFORM_FEEDBACK_BUFFER:
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bind = PIPE_BIND_STREAM_OUTPUT;
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break;
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case GL_UNIFORM_BUFFER:
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bind = PIPE_BIND_CONSTANT_BUFFER;
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break;
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default:
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bind = 0;
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}
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switch (usage) {
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case GL_STATIC_DRAW:
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case GL_STATIC_READ:
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case GL_STATIC_COPY:
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pipe_usage = PIPE_USAGE_STATIC;
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break;
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case GL_DYNAMIC_DRAW:
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case GL_DYNAMIC_READ:
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case GL_DYNAMIC_COPY:
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pipe_usage = PIPE_USAGE_DYNAMIC;
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break;
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case GL_STREAM_DRAW:
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case GL_STREAM_READ:
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case GL_STREAM_COPY:
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pipe_usage = PIPE_USAGE_STREAM;
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break;
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default:
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pipe_usage = PIPE_USAGE_DEFAULT;
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}
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pipe_resource_reference( &st_obj->buffer, NULL );
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if (ST_DEBUG & DEBUG_BUFFER) {
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debug_printf("Create buffer size %td bind 0x%x\n", size, bind);
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}
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if (size != 0) {
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st_obj->buffer = pipe_buffer_create(pipe->screen, bind,
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pipe_usage, size);
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if (!st_obj->buffer) {
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/* out of memory */
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st_obj->Base.Size = 0;
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return GL_FALSE;
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}
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if (data)
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pipe_buffer_write(pipe, st_obj->buffer, 0, size, data);
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}
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/* BufferData may change a uniform buffer, need to update it */
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st->dirty.st |= ST_NEW_UNIFORM_BUFFER;
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return GL_TRUE;
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}
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/**
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* Called via glMapBufferRange().
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*/
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static void *
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st_bufferobj_map_range(struct gl_context *ctx,
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GLintptr offset, GLsizeiptr length, GLbitfield access,
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struct gl_buffer_object *obj)
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{
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struct pipe_context *pipe = st_context(ctx)->pipe;
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struct st_buffer_object *st_obj = st_buffer_object(obj);
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enum pipe_transfer_usage flags = 0x0;
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if (access & GL_MAP_WRITE_BIT)
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flags |= PIPE_TRANSFER_WRITE;
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if (access & GL_MAP_READ_BIT)
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flags |= PIPE_TRANSFER_READ;
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if (access & GL_MAP_FLUSH_EXPLICIT_BIT)
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flags |= PIPE_TRANSFER_FLUSH_EXPLICIT;
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if (access & GL_MAP_INVALIDATE_BUFFER_BIT) {
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flags |= PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE;
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}
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else if (access & GL_MAP_INVALIDATE_RANGE_BIT) {
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if (offset == 0 && length == obj->Size)
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flags |= PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE;
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else
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flags |= PIPE_TRANSFER_DISCARD_RANGE;
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}
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if (access & GL_MAP_UNSYNCHRONIZED_BIT)
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flags |= PIPE_TRANSFER_UNSYNCHRONIZED;
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/* ... other flags ...
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*/
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if (access & MESA_MAP_NOWAIT_BIT)
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flags |= PIPE_TRANSFER_DONTBLOCK;
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assert(offset >= 0);
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assert(length >= 0);
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assert(offset < obj->Size);
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assert(offset + length <= obj->Size);
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obj->Pointer = pipe_buffer_map_range(pipe,
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st_obj->buffer,
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offset, length,
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flags,
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&st_obj->transfer);
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if (obj->Pointer) {
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obj->Offset = offset;
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obj->Length = length;
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obj->AccessFlags = access;
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}
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else {
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st_obj->transfer = NULL;
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}
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return obj->Pointer;
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}
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static void
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st_bufferobj_flush_mapped_range(struct gl_context *ctx,
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GLintptr offset, GLsizeiptr length,
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struct gl_buffer_object *obj)
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{
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struct pipe_context *pipe = st_context(ctx)->pipe;
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struct st_buffer_object *st_obj = st_buffer_object(obj);
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/* Subrange is relative to mapped range */
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assert(offset >= 0);
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assert(length >= 0);
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assert(offset + length <= obj->Length);
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assert(obj->Pointer);
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if (!length)
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return;
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pipe_buffer_flush_mapped_range(pipe, st_obj->transfer,
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obj->Offset + offset, length);
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}
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/**
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* Called via glUnmapBufferARB().
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*/
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static GLboolean
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st_bufferobj_unmap(struct gl_context *ctx, struct gl_buffer_object *obj)
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{
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struct pipe_context *pipe = st_context(ctx)->pipe;
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struct st_buffer_object *st_obj = st_buffer_object(obj);
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if (obj->Length)
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pipe_buffer_unmap(pipe, st_obj->transfer);
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st_obj->transfer = NULL;
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obj->Pointer = NULL;
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obj->Offset = 0;
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obj->Length = 0;
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return GL_TRUE;
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}
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/**
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* Called via glCopyBufferSubData().
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*/
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static void
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st_copy_buffer_subdata(struct gl_context *ctx,
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struct gl_buffer_object *src,
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struct gl_buffer_object *dst,
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GLintptr readOffset, GLintptr writeOffset,
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GLsizeiptr size)
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{
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struct pipe_context *pipe = st_context(ctx)->pipe;
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struct st_buffer_object *srcObj = st_buffer_object(src);
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struct st_buffer_object *dstObj = st_buffer_object(dst);
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struct pipe_box box;
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if(!size)
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return;
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/* buffer should not already be mapped */
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assert(!src->Pointer);
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assert(!dst->Pointer);
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u_box_1d(readOffset, size, &box);
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pipe->resource_copy_region(pipe, dstObj->buffer, 0, writeOffset, 0, 0,
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srcObj->buffer, 0, &box);
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}
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/* TODO: if buffer wasn't created with appropriate usage flags, need
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* to recreate it now and copy contents -- or possibly create a
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* gallium entrypoint to extend the usage flags and let the driver
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* decide if a copy is necessary.
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*/
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void
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st_bufferobj_validate_usage(struct st_context *st,
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struct st_buffer_object *obj,
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unsigned usage)
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{
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}
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void
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st_init_bufferobject_functions(struct dd_function_table *functions)
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{
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functions->NewBufferObject = st_bufferobj_alloc;
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functions->DeleteBuffer = st_bufferobj_free;
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functions->BufferData = st_bufferobj_data;
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functions->BufferSubData = st_bufferobj_subdata;
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functions->GetBufferSubData = st_bufferobj_get_subdata;
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functions->MapBufferRange = st_bufferobj_map_range;
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functions->FlushMappedBufferRange = st_bufferobj_flush_mapped_range;
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functions->UnmapBuffer = st_bufferobj_unmap;
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functions->CopyBufferSubData = st_copy_buffer_subdata;
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/* For GL_APPLE_vertex_array_object */
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functions->NewArrayObject = _mesa_new_array_object;
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functions->DeleteArrayObject = _mesa_delete_array_object;
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}
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