| /* |
| * Copyright 2005 VMware, Inc. |
| * 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, sublicense, 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 NONINFRINGEMENT. |
| * IN NO EVENT SHALL VMWARE 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 "main/mtypes.h" |
| |
| struct brw_context; |
| struct gl_buffer_object; |
| |
| |
| /** |
| * Intel vertex/pixel buffer object, derived from Mesa's gl_buffer_object. |
| */ |
| struct intel_buffer_object |
| { |
| struct gl_buffer_object Base; |
| drm_intel_bo *buffer; /* the low-level buffer manager's buffer handle */ |
| |
| drm_intel_bo *range_map_bo[MAP_COUNT]; |
| |
| /** |
| * Alignment offset from the range_map_bo temporary mapping to the returned |
| * obj->Pointer (caused by GL_ARB_map_buffer_alignment). |
| */ |
| unsigned map_extra[MAP_COUNT]; |
| |
| /** @{ |
| * Tracking for what range of the BO may currently be in use by the GPU. |
| * |
| * Users often want to either glBufferSubData() or glMapBufferRange() a |
| * buffer object where some subset of it is busy on the GPU, without either |
| * stalling or doing an extra blit (since our blits are extra expensive, |
| * given that we have to reupload most of the 3D state when switching |
| * rings). We wish they'd just use glMapBufferRange() with the |
| * UNSYNC|INVALIDATE_RANGE flag or the INVALIDATE_BUFFER flag, but lots |
| * don't. |
| * |
| * To work around apps, we track what range of the BO we might have used on |
| * the GPU as vertex data, tranform feedback output, buffer textures, etc., |
| * and just do glBufferSubData() with an unsynchronized map when they're |
| * outside of that range. |
| * |
| * If gpu_active_start > gpu_active_end, then the GPU is not currently |
| * accessing the BO (and we can map it without synchronization). |
| */ |
| uint32_t gpu_active_start; |
| uint32_t gpu_active_end; |
| |
| /** |
| * If we've avoided stalls/blits using the active tracking, flag the buffer |
| * for (occasional) stalling in the future to avoid getting stuck in a |
| * cycle of blitting on buffer wraparound. |
| */ |
| bool prefer_stall_to_blit; |
| /** @} */ |
| }; |
| |
| |
| /* Get the bm buffer associated with a GL bufferobject: |
| */ |
| drm_intel_bo *intel_bufferobj_buffer(struct brw_context *brw, |
| struct intel_buffer_object *obj, |
| uint32_t offset, |
| uint32_t size); |
| |
| void intel_upload_data(struct brw_context *brw, |
| const void *data, |
| uint32_t size, |
| uint32_t alignment, |
| drm_intel_bo **out_bo, |
| uint32_t *out_offset); |
| |
| void *intel_upload_space(struct brw_context *brw, |
| uint32_t size, |
| uint32_t alignment, |
| drm_intel_bo **out_bo, |
| uint32_t *out_offset); |
| |
| void intel_upload_finish(struct brw_context *brw); |
| |
| /* Hook the bufferobject implementation into mesa: |
| */ |
| void intelInitBufferObjectFuncs(struct dd_function_table *functions); |
| |
| static inline struct intel_buffer_object * |
| intel_buffer_object(struct gl_buffer_object *obj) |
| { |
| return (struct intel_buffer_object *) obj; |
| } |
| |
| #endif |