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,
34 * which is the basic structure for rectangular collections of pixels
35 * stored in a drm_intel_bo.
41 #include "main/mtypes.h"
42 #include "intel_bufmgr.h"
45 struct intel_buffer_object;
48 * A layer on top of the bufmgr buffers that adds a few useful things:
50 * - Refcounting for local buffer references.
51 * - Refcounting for buffer maps
52 * - Buffer dimensions - pitch and height.
53 * - Blitter commands for copying 2D regions between buffers. (really???)
57 drm_intel_bo *bo; /**< buffer manager's buffer */
58 GLuint refcount; /**< Reference count for region */
59 GLuint cpp; /**< bytes per pixel */
60 GLuint width; /**< in pixels */
61 GLuint height; /**< in pixels */
62 GLuint pitch; /**< in pixels */
63 GLubyte *map; /**< only non-NULL when region is actually mapped */
64 GLuint map_refcount; /**< Reference count for mapping */
66 uint32_t tiling; /**< Which tiling mode the region is in */
68 uint32_t name; /**< Global name for the bo */
69 struct intel_screen *screen;
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_screen *screen,
78 GLuint cpp, GLuint width,
80 bool expect_accelerated_upload);
83 intel_region_alloc_for_handle(struct intel_screen *screen,
85 GLuint width, GLuint height, GLuint pitch,
86 unsigned int handle, const char *name);
89 intel_region_flink(struct intel_region *region, uint32_t *name);
91 void intel_region_reference(struct intel_region **dst,
92 struct intel_region *src);
94 void intel_region_release(struct intel_region **ib);
96 void intel_recreate_static_regions(struct intel_context *intel);
99 * Map/unmap regions. This is refcounted also:
101 * \param mode bitmask of GL_MAP_READ_BIT, GL_MAP_WRITE_BIT
103 void *intel_region_map(struct intel_context *intel,
104 struct intel_region *ib,
107 void intel_region_unmap(struct intel_context *intel, struct intel_region *ib);
109 /* Copy rectangular sub-regions
112 intel_region_copy(struct intel_context *intel,
113 struct intel_region *dest,
115 GLuint destx, GLuint desty,
116 struct intel_region *src,
118 GLuint srcx, GLuint srcy, GLuint width, GLuint height,
122 void _mesa_copy_rect(GLubyte * dst,
130 GLuint src_pitch, GLuint src_x, GLuint src_y);
132 struct __DRIimageRec {
133 struct intel_region *region;
134 GLenum internal_format;