1 /**************************************************************************
3 * Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
28 #ifndef INTEL_REGIONS_H
29 #define INTEL_REGIONS_H
31 /** @file intel_regions.h
33 * Structure definitions and prototypes for intel_region handling, which is
34 * the basic structure for rectangular collections of pixels stored in a dri_bo.
39 #include "main/mtypes.h"
40 #include "intel_bufmgr.h"
43 struct intel_buffer_object;
46 * A layer on top of the bufmgr buffers that adds a few useful things:
48 * - Refcounting for local buffer references.
49 * - Refcounting for buffer maps
50 * - Buffer dimensions - pitch and height.
51 * - Blitter commands for copying 2D regions between buffers. (really???)
55 dri_bo *buffer; /**< buffer manager's buffer */
56 GLuint refcount; /**< Reference count for region */
57 GLuint cpp; /**< bytes per pixel */
58 GLuint width; /**< in pixels */
59 GLuint height; /**< in pixels */
60 GLuint pitch; /**< in pixels */
61 GLubyte *map; /**< only non-NULL when region is actually mapped */
62 GLuint map_refcount; /**< Reference count for mapping */
64 GLuint draw_offset; /**< Offset of drawing address within the region */
65 uint32_t tiling; /**< Which tiling mode the region is in */
66 uint32_t bit_6_swizzle; /**< GEM flag for address swizzling requirement */
67 drmAddress classic_map; /**< drmMap of the region when not in GEM mode */
68 struct intel_buffer_object *pbo; /* zero-copy uploads */
72 /* Allocate a refcounted region. Pointers to regions should only be
73 * copied by calling intel_reference_region().
75 struct intel_region *intel_region_alloc(struct intel_context *intel,
77 GLuint cpp, GLuint width,
78 GLuint height, GLuint pitch,
79 GLboolean expect_accelerated_upload);
82 intel_region_alloc_for_handle(struct intel_context *intel,
84 GLuint width, GLuint height, GLuint pitch,
85 unsigned int handle, const char *name);
87 void intel_region_reference(struct intel_region **dst,
88 struct intel_region *src);
90 void intel_region_release(struct intel_region **ib);
92 void intel_recreate_static_regions(struct intel_context *intel);
94 /* Map/unmap regions. This is refcounted also:
96 GLubyte *intel_region_map(struct intel_context *intel,
97 struct intel_region *ib);
99 void intel_region_unmap(struct intel_context *intel, struct intel_region *ib);
102 /* Upload data to a rectangular sub-region
104 void intel_region_data(struct intel_context *intel,
105 struct intel_region *dest,
107 GLuint destx, GLuint desty,
108 const void *src, GLuint src_stride,
109 GLuint srcx, GLuint srcy, GLuint width, GLuint height);
111 /* Copy rectangular sub-regions
113 void intel_region_copy(struct intel_context *intel,
114 struct intel_region *dest,
116 GLuint destx, GLuint desty,
117 struct intel_region *src,
119 GLuint srcx, GLuint srcy, GLuint width, GLuint height);
121 /* Helpers for zerocopy uploads, particularly texture image uploads:
123 void intel_region_attach_pbo(struct intel_context *intel,
124 struct intel_region *region,
125 struct intel_buffer_object *pbo);
126 void intel_region_release_pbo(struct intel_context *intel,
127 struct intel_region *region);
128 void intel_region_cow(struct intel_context *intel,
129 struct intel_region *region);
131 dri_bo *intel_region_buffer(struct intel_context *intel,
132 struct intel_region *region,
135 void _mesa_copy_rect(GLubyte * dst,
143 GLuint src_pitch, GLuint src_x, GLuint src_y);