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| /************************************************************************** |
| * |
| * Copyright 2007 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. |
| * |
| **************************************************************************/ |
| |
| |
| /** |
| * Functions for pixel buffer objects and vertex/element buffer objects. |
| */ |
| |
| |
| #include "main/imports.h" |
| #include "main/mtypes.h" |
| #include "main/arrayobj.h" |
| #include "main/bufferobj.h" |
| |
| #include "st_context.h" |
| #include "st_cb_bufferobjects.h" |
| |
| #include "pipe/p_context.h" |
| #include "pipe/p_defines.h" |
| #include "util/u_inlines.h" |
| |
| |
| /** |
| * 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 * |
| st_bufferobj_alloc(struct gl_context *ctx, GLuint name, GLenum target) |
| { |
| struct st_buffer_object *st_obj = ST_CALLOC_STRUCT(st_buffer_object); |
| |
| if (!st_obj) |
| return NULL; |
| |
| _mesa_initialize_buffer_object(&st_obj->Base, name, target); |
| |
| return &st_obj->Base; |
| } |
| |
| |
| |
| /** |
| * Deallocate/free a vertex/pixel buffer object. |
| * Called via glDeleteBuffersARB(). |
| */ |
| static void |
| st_bufferobj_free(struct gl_context *ctx, struct gl_buffer_object *obj) |
| { |
| struct st_buffer_object *st_obj = st_buffer_object(obj); |
| |
| assert(obj->RefCount == 0); |
| assert(st_obj->transfer == NULL); |
| |
| if (st_obj->buffer) |
| pipe_resource_reference(&st_obj->buffer, NULL); |
| |
| free(st_obj); |
| } |
| |
| |
| |
| /** |
| * 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 |
| st_bufferobj_subdata(struct gl_context *ctx, |
| GLenum target, |
| GLintptrARB offset, |
| GLsizeiptrARB size, |
| const GLvoid * data, struct gl_buffer_object *obj) |
| { |
| struct st_buffer_object *st_obj = st_buffer_object(obj); |
| |
| /* we may be called from VBO code, so double-check params here */ |
| ASSERT(offset >= 0); |
| ASSERT(size >= 0); |
| ASSERT(offset + size <= obj->Size); |
| |
| if (!size) |
| return; |
| |
| /* |
| * According to ARB_vertex_buffer_object specification, if data is null, |
| * then the contents of the buffer object's data store is undefined. We just |
| * ignore, and leave it unchanged. |
| */ |
| if (!data) |
| return; |
| |
| /* Now that transfers are per-context, we don't have to figure out |
| * flushing here. Usually drivers won't need to flush in this case |
| * even if the buffer is currently referenced by hardware - they |
| * just queue the upload as dma rather than mapping the underlying |
| * buffer directly. |
| */ |
| pipe_buffer_write(st_context(ctx)->pipe, |
| st_obj->buffer, |
| offset, size, data); |
| } |
| |
| |
| /** |
| * Called via glGetBufferSubDataARB(). |
| */ |
| static void |
| st_bufferobj_get_subdata(struct gl_context *ctx, |
| GLenum target, |
| GLintptrARB offset, |
| GLsizeiptrARB size, |
| GLvoid * data, struct gl_buffer_object *obj) |
| { |
| struct st_buffer_object *st_obj = st_buffer_object(obj); |
| |
| /* we may be called from VBO code, so double-check params here */ |
| ASSERT(offset >= 0); |
| ASSERT(size >= 0); |
| ASSERT(offset + size <= obj->Size); |
| |
| if (!size) |
| return; |
| |
| pipe_buffer_read(st_context(ctx)->pipe, st_obj->buffer, |
| offset, size, data); |
| } |
| |
| |
| /** |
| * 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 |
| st_bufferobj_data(struct gl_context *ctx, |
| GLenum target, |
| GLsizeiptrARB size, |
| const GLvoid * data, |
| GLenum usage, |
| struct gl_buffer_object *obj) |
| { |
| struct st_context *st = st_context(ctx); |
| struct pipe_context *pipe = st->pipe; |
| struct st_buffer_object *st_obj = st_buffer_object(obj); |
| unsigned buffer_usage; |
| |
| st_obj->Base.Size = size; |
| st_obj->Base.Usage = usage; |
| |
| switch(target) { |
| case GL_PIXEL_PACK_BUFFER_ARB: |
| case GL_PIXEL_UNPACK_BUFFER_ARB: |
| buffer_usage = PIPE_BIND_RENDER_TARGET; |
| break; |
| case GL_ARRAY_BUFFER_ARB: |
| buffer_usage = PIPE_BIND_VERTEX_BUFFER; |
| break; |
| case GL_ELEMENT_ARRAY_BUFFER_ARB: |
| buffer_usage = PIPE_BIND_INDEX_BUFFER; |
| break; |
| default: |
| buffer_usage = 0; |
| } |
| |
| pipe_resource_reference( &st_obj->buffer, NULL ); |
| |
| if (size != 0) { |
| st_obj->buffer = pipe_buffer_create(pipe->screen, buffer_usage, size); |
| |
| if (!st_obj->buffer) { |
| return GL_FALSE; |
| } |
| |
| if (data) |
| pipe_buffer_write(st_context(ctx)->pipe, st_obj->buffer, 0, |
| size, data); |
| return GL_TRUE; |
| } |
| |
| return GL_TRUE; |
| } |
| |
| |
| /** |
| * Dummy data whose's pointer is used for zero size buffers or ranges. |
| */ |
| static long st_bufferobj_zero_length = 0; |
| |
| |
| |
| /** |
| * Called via glMapBufferARB(). |
| */ |
| static void * |
| st_bufferobj_map(struct gl_context *ctx, GLenum target, GLenum access, |
| struct gl_buffer_object *obj) |
| { |
| struct st_buffer_object *st_obj = st_buffer_object(obj); |
| uint flags; |
| |
| switch (access) { |
| case GL_WRITE_ONLY: |
| flags = PIPE_TRANSFER_WRITE; |
| break; |
| case GL_READ_ONLY: |
| flags = PIPE_TRANSFER_READ; |
| break; |
| case GL_READ_WRITE: |
| default: |
| flags = PIPE_TRANSFER_READ_WRITE; |
| break; |
| } |
| |
| /* Handle zero-size buffers here rather than in drivers */ |
| if (obj->Size == 0) { |
| obj->Pointer = &st_bufferobj_zero_length; |
| } |
| else { |
| obj->Pointer = pipe_buffer_map(st_context(ctx)->pipe, |
| st_obj->buffer, |
| flags, |
| &st_obj->transfer); |
| } |
| |
| if (obj->Pointer) { |
| obj->Offset = 0; |
| obj->Length = obj->Size; |
| } |
| return obj->Pointer; |
| } |
| |
| |
| /** |
| * Called via glMapBufferRange(). |
| */ |
| static void * |
| st_bufferobj_map_range(struct gl_context *ctx, GLenum target, |
| GLintptr offset, GLsizeiptr length, GLbitfield access, |
| struct gl_buffer_object *obj) |
| { |
| struct pipe_context *pipe = st_context(ctx)->pipe; |
| struct st_buffer_object *st_obj = st_buffer_object(obj); |
| enum pipe_transfer_usage flags = 0x0; |
| |
| if (access & GL_MAP_WRITE_BIT) |
| flags |= PIPE_TRANSFER_WRITE; |
| |
| if (access & GL_MAP_READ_BIT) |
| flags |= PIPE_TRANSFER_READ; |
| |
| if (access & GL_MAP_FLUSH_EXPLICIT_BIT) |
| flags |= PIPE_TRANSFER_FLUSH_EXPLICIT; |
| |
| if (access & GL_MAP_INVALIDATE_RANGE_BIT) |
| flags |= PIPE_TRANSFER_DISCARD; |
| |
| if (access & GL_MAP_INVALIDATE_BUFFER_BIT) |
| flags |= PIPE_TRANSFER_DISCARD; |
| |
| if (access & GL_MAP_UNSYNCHRONIZED_BIT) |
| flags |= PIPE_TRANSFER_UNSYNCHRONIZED; |
| |
| /* ... other flags ... |
| */ |
| |
| if (access & MESA_MAP_NOWAIT_BIT) |
| flags |= PIPE_TRANSFER_DONTBLOCK; |
| |
| assert(offset >= 0); |
| assert(length >= 0); |
| assert(offset < obj->Size); |
| assert(offset + length <= obj->Size); |
| |
| /* |
| * We go out of way here to hide the degenerate yet valid case of zero |
| * length range from the pipe driver. |
| */ |
| if (!length) { |
| obj->Pointer = &st_bufferobj_zero_length; |
| } |
| else { |
| obj->Pointer = pipe_buffer_map_range(pipe, |
| st_obj->buffer, |
| offset, length, |
| flags, |
| &st_obj->transfer); |
| if (obj->Pointer) { |
| obj->Pointer = (ubyte *) obj->Pointer + offset; |
| } |
| } |
| |
| if (obj->Pointer) { |
| obj->Offset = offset; |
| obj->Length = length; |
| obj->AccessFlags = access; |
| } |
| |
| return obj->Pointer; |
| } |
| |
| |
| static void |
| st_bufferobj_flush_mapped_range(struct gl_context *ctx, GLenum target, |
| GLintptr offset, GLsizeiptr length, |
| struct gl_buffer_object *obj) |
| { |
| struct pipe_context *pipe = st_context(ctx)->pipe; |
| struct st_buffer_object *st_obj = st_buffer_object(obj); |
| |
| /* Subrange is relative to mapped range */ |
| assert(offset >= 0); |
| assert(length >= 0); |
| assert(offset + length <= obj->Length); |
| assert(obj->Pointer); |
| |
| if (!length) |
| return; |
| |
| pipe_buffer_flush_mapped_range(pipe, st_obj->transfer, |
| obj->Offset + offset, length); |
| } |
| |
| |
| /** |
| * Called via glUnmapBufferARB(). |
| */ |
| static GLboolean |
| st_bufferobj_unmap(struct gl_context *ctx, GLenum target, struct gl_buffer_object *obj) |
| { |
| struct pipe_context *pipe = st_context(ctx)->pipe; |
| struct st_buffer_object *st_obj = st_buffer_object(obj); |
| |
| if (obj->Length) |
| pipe_buffer_unmap(pipe, st_obj->buffer, st_obj->transfer); |
| |
| st_obj->transfer = NULL; |
| obj->Pointer = NULL; |
| obj->Offset = 0; |
| obj->Length = 0; |
| return GL_TRUE; |
| } |
| |
| |
| /** |
| * Called via glCopyBufferSubData(). |
| */ |
| static void |
| st_copy_buffer_subdata(struct gl_context *ctx, |
| struct gl_buffer_object *src, |
| struct gl_buffer_object *dst, |
| GLintptr readOffset, GLintptr writeOffset, |
| GLsizeiptr size) |
| { |
| struct pipe_context *pipe = st_context(ctx)->pipe; |
| struct st_buffer_object *srcObj = st_buffer_object(src); |
| struct st_buffer_object *dstObj = st_buffer_object(dst); |
| struct pipe_transfer *src_transfer; |
| struct pipe_transfer *dst_transfer; |
| ubyte *srcPtr, *dstPtr; |
| |
| if(!size) |
| return; |
| |
| /* buffer should not already be mapped */ |
| assert(!src->Pointer); |
| assert(!dst->Pointer); |
| |
| srcPtr = (ubyte *) pipe_buffer_map_range(pipe, |
| srcObj->buffer, |
| readOffset, size, |
| PIPE_TRANSFER_READ, |
| &src_transfer); |
| |
| dstPtr = (ubyte *) pipe_buffer_map_range(pipe, |
| dstObj->buffer, |
| writeOffset, size, |
| PIPE_TRANSFER_WRITE, |
| &dst_transfer); |
| |
| if (srcPtr && dstPtr) |
| memcpy(dstPtr + writeOffset, srcPtr + readOffset, size); |
| |
| pipe_buffer_unmap(pipe, srcObj->buffer, src_transfer); |
| pipe_buffer_unmap(pipe, dstObj->buffer, dst_transfer); |
| } |
| |
| |
| /* TODO: if buffer wasn't created with appropriate usage flags, need |
| * to recreate it now and copy contents -- or possibly create a |
| * gallium entrypoint to extend the usage flags and let the driver |
| * decide if a copy is necessary. |
| */ |
| void |
| st_bufferobj_validate_usage(struct st_context *st, |
| struct st_buffer_object *obj, |
| unsigned usage) |
| { |
| } |
| |
| |
| void |
| st_init_bufferobject_functions(struct dd_function_table *functions) |
| { |
| functions->NewBufferObject = st_bufferobj_alloc; |
| functions->DeleteBuffer = st_bufferobj_free; |
| functions->BufferData = st_bufferobj_data; |
| functions->BufferSubData = st_bufferobj_subdata; |
| functions->GetBufferSubData = st_bufferobj_get_subdata; |
| functions->MapBuffer = st_bufferobj_map; |
| functions->MapBufferRange = st_bufferobj_map_range; |
| functions->FlushMappedBufferRange = st_bufferobj_flush_mapped_range; |
| functions->UnmapBuffer = st_bufferobj_unmap; |
| functions->CopyBufferSubData = st_copy_buffer_subdata; |
| |
| /* For GL_APPLE_vertex_array_object */ |
| functions->NewArrayObject = _mesa_new_array_object; |
| functions->DeleteArrayObject = _mesa_delete_array_object; |
| } |