fbec2a5ad7
This moves _cogl_get_format_bpp from cogl-bitmap.c to cogl.c and renames it to _cogl_pixel_format_get_bytes_per_pixel. This makes it clearer that it doesn't return bits per pixel and makes the naming consistent with other cogl api. The prototype has been moved to cogl-private.h since it seems we should be aiming to get rid of cogl-internal.h at some point. The patch also adds a simple gtk-doc comment since we might want to make this api public. Reviewed-by: Neil Roberts <neil@linux.intel.com>
137 lines
3.8 KiB
C
137 lines
3.8 KiB
C
/*
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* Cogl
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*
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* An object oriented GL/GLES Abstraction/Utility Layer
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*
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* Copyright (C) 2010 Intel Corporation.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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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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/* For an overview of the functionality implemented here, please see
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* cogl-buffer-array.h, which contains the gtk-doc section overview for the
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* Pixel Buffers API.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <stdio.h>
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#include <string.h>
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#include <glib.h>
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#include "cogl.h"
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#include "cogl-private.h"
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#include "cogl-util.h"
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#include "cogl-context-private.h"
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#include "cogl-object.h"
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#include "cogl-pixel-buffer-private.h"
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#include "cogl-pixel-buffer.h"
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/*
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* GL/GLES compatibility defines for the buffer API:
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*/
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#if defined (HAVE_COGL_GL)
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#ifndef GL_PIXEL_UNPACK_BUFFER
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#define GL_PIXEL_UNPACK_BUFFER GL_PIXEL_UNPACK_BUFFER_ARB
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#endif
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#ifndef GL_PIXEL_PACK_BUFFER
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#define GL_PIXEL_PACK_BUFFER GL_PIXEL_PACK_BUFFER_ARB
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#endif
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#endif
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static void
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_cogl_pixel_buffer_free (CoglPixelBuffer *buffer);
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COGL_BUFFER_DEFINE (PixelBuffer, pixel_buffer)
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static CoglPixelBuffer *
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_cogl_pixel_buffer_new (CoglContext *context, unsigned int size)
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{
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CoglPixelBuffer *pixel_buffer = g_slice_new0 (CoglPixelBuffer);
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CoglBuffer *buffer = COGL_BUFFER (pixel_buffer);
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gboolean use_malloc;
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if (!(context->private_feature_flags & COGL_PRIVATE_FEATURE_PBOS))
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use_malloc = TRUE;
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else
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use_malloc = FALSE;
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/* parent's constructor */
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_cogl_buffer_initialize (buffer,
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context,
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size,
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use_malloc,
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COGL_BUFFER_BIND_TARGET_PIXEL_UNPACK,
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COGL_BUFFER_USAGE_HINT_TEXTURE,
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COGL_BUFFER_UPDATE_HINT_STATIC);
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/* return COGL_INVALID_HANDLE; */
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return _cogl_pixel_buffer_object_new (pixel_buffer);
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}
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CoglPixelBuffer *
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cogl_pixel_buffer_new_with_size (CoglContext *context,
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unsigned int width,
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unsigned int height,
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CoglPixelFormat format,
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unsigned int *rowstride)
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{
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CoglPixelBuffer *buffer;
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CoglPixelBuffer *pixel_buffer;
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unsigned int stride;
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/* creating a buffer to store "any" format does not make sense */
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if (G_UNLIKELY (format == COGL_PIXEL_FORMAT_ANY))
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return COGL_INVALID_HANDLE;
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/* for now we fallback to cogl_pixel_buffer_new, later, we could ask
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* libdrm a tiled buffer for instance */
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stride = width * _cogl_pixel_format_get_bytes_per_pixel (format);
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if (rowstride)
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*rowstride = stride;
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buffer = _cogl_pixel_buffer_new (context, height * stride);
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if (G_UNLIKELY (buffer == COGL_INVALID_HANDLE))
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return COGL_INVALID_HANDLE;
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pixel_buffer = COGL_PIXEL_BUFFER (buffer);
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pixel_buffer->width = width;
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pixel_buffer->height = height;
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pixel_buffer->format = format;
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pixel_buffer->stride = stride;
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return buffer;
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}
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static void
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_cogl_pixel_buffer_free (CoglPixelBuffer *buffer)
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{
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/* parent's destructor */
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_cogl_buffer_fini (COGL_BUFFER (buffer));
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g_slice_free (CoglPixelBuffer, buffer);
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}
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