3280fee8bc
It would be used in the next commit to generate a gtype and be used for Buffer::default-target Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3357>
129 lines
3.9 KiB
C
129 lines
3.9 KiB
C
/*
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* Cogl
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*
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* A Low Level GPU Graphics and Utilities API
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*
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* Copyright (C) 2010 Intel Corporation.
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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*
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*
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* Authors:
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* Damien Lespiau <damien.lespiau@intel.com>
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* Robert Bragg <robert@linux.intel.com>
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*/
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#pragma once
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#include <glib.h>
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#include "cogl/cogl-buffer.h"
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#include "cogl/cogl-context.h"
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#include "cogl/cogl-gl-header.h"
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G_BEGIN_DECLS
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typedef enum _CoglBufferFlags
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{
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COGL_BUFFER_FLAG_NONE = 0,
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COGL_BUFFER_FLAG_BUFFER_OBJECT = 1UL << 0, /* real openGL buffer object */
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COGL_BUFFER_FLAG_MAPPED = 1UL << 1,
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COGL_BUFFER_FLAG_MAPPED_FALLBACK = 1UL << 2
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} CoglBufferFlags;
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struct _CoglBuffer
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{
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GObject parent_instance;
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CoglContext *context;
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CoglBufferBindTarget last_target;
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CoglBufferFlags flags;
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GLuint gl_handle; /* OpenGL handle */
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unsigned int size; /* size of the buffer, in bytes */
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CoglBufferUpdateHint update_hint;
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/* points to the mapped memory when the CoglBuffer is a VBO, PBO,
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* ... or points to allocated memory in the fallback paths */
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uint8_t *data;
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int immutable_ref;
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unsigned int store_created : 1;
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void * (* map_range) (CoglBuffer *buffer,
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size_t offset,
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size_t size,
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CoglBufferAccess access,
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CoglBufferMapHint hints,
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GError **error);
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void (* unmap) (CoglBuffer *buffer);
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gboolean (* set_data) (CoglBuffer *buffer,
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unsigned int offset,
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const void *data,
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unsigned int size,
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GError **error);
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};
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struct _CoglBufferClass
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{
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GObjectClass parent_class;
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};
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CoglBuffer *
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_cogl_buffer_immutable_ref (CoglBuffer *buffer);
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void
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_cogl_buffer_immutable_unref (CoglBuffer *buffer);
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gboolean
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_cogl_buffer_set_data (CoglBuffer *buffer,
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size_t offset,
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const void *data,
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size_t size,
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GError **error);
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void *
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_cogl_buffer_map (CoglBuffer *buffer,
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CoglBufferAccess access,
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CoglBufferMapHint hints,
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GError **error);
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/* This is a wrapper around cogl_buffer_map_range for internal use
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when we want to map the buffer for write only to replace the entire
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contents. If the map fails then it will fallback to writing to a
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temporary buffer. When _cogl_buffer_unmap_for_fill_or_fallback is
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called the temporary buffer will be copied into the array. Note
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that these calls share a global array so they can not be nested. */
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void *
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_cogl_buffer_map_range_for_fill_or_fallback (CoglBuffer *buffer,
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size_t offset,
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size_t size);
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void
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_cogl_buffer_unmap_for_fill_or_fallback (CoglBuffer *buffer);
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G_END_DECLS
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