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 drm_intel_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 GLuint draw_x, draw_y; /**< Offset of drawing within the region */
67 uint32_t tiling; /**< Which tiling mode the region is in */
68 uint32_t bit_6_swizzle; /**< GEM flag for address swizzling requirement */
69 struct intel_buffer_object *pbo; /* zero-copy uploads */
73 /* Allocate a refcounted region. Pointers to regions should only be
74 * copied by calling intel_reference_region().
76 struct intel_region *intel_region_alloc(struct intel_context *intel,
78 GLuint cpp, GLuint width,
79 GLuint height, GLuint pitch,
80 GLboolean expect_accelerated_upload);
83 intel_region_alloc_for_handle(struct intel_context *intel,
85 GLuint width, GLuint height, GLuint pitch,
86 unsigned int handle, const char *name);
88 void intel_region_reference(struct intel_region **dst,
89 struct intel_region *src);
91 void intel_region_release(struct intel_region **ib);
93 void intel_recreate_static_regions(struct intel_context *intel);
95 /* Map/unmap regions. This is refcounted also:
97 GLubyte *intel_region_map(struct intel_context *intel,
98 struct intel_region *ib);
100 void intel_region_unmap(struct intel_context *intel, struct intel_region *ib);
103 /* Upload data to a rectangular sub-region
105 void intel_region_data(struct intel_context *intel,
106 struct intel_region *dest,
108 GLuint destx, GLuint desty,
109 const void *src, GLuint src_stride,
110 GLuint srcx, GLuint srcy, GLuint width, GLuint height);
112 /* Copy rectangular sub-regions
115 intel_region_copy(struct intel_context *intel,
116 struct intel_region *dest,
118 GLuint destx, GLuint desty,
119 struct intel_region *src,
121 GLuint srcx, GLuint srcy, GLuint width, GLuint height,
124 /* Helpers for zerocopy uploads, particularly texture image uploads:
126 void intel_region_attach_pbo(struct intel_context *intel,
127 struct intel_region *region,
128 struct intel_buffer_object *pbo);
129 void intel_region_release_pbo(struct intel_context *intel,
130 struct intel_region *region);
131 void intel_region_cow(struct intel_context *intel,
132 struct intel_region *region);
134 dri_bo *intel_region_buffer(struct intel_context *intel,
135 struct intel_region *region,
138 void _mesa_copy_rect(GLubyte * dst,
146 GLuint src_pitch, GLuint src_x, GLuint src_y);