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6f480c7530
This removes the gl centric _cogl_texture_prepare_for_upload api from cogl-texture.c and instead adds a _cogl_bitmap_convert_for_upload() api which everything now uses instead. GL specific code that needed the gl internal/format/type enums returned by _cogl_texture_prepare_for_upload now use ->pixel_format_to_gl directly. Since there was a special case optimization in cogl_texture_new_from_file that aimed to avoid copying the temporary bitmap that's created for the given file and allow conversions to happen in-place the new _cogl_bitmap_convert_for_upload() api supports converting in place depending on a 'can_convert_in_place' argument. This ability to convert bitmaps in-place has been integrated across the different components as appropriate. In updating cogl-texture-2d-sliced.c this was able to remove a number of other GL specific parts to how spans are setup. Reviewed-by: Neil Roberts <neil@linux.intel.com> (cherry picked from commit e190dd23c655da34b9c5c263a9f6006dcc0413b0) Conflicts: cogl/cogl-auto-texture.c cogl/cogl.symbols
209 lines
6.5 KiB
C
209 lines
6.5 KiB
C
/*
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* Clutter COGL
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*
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* A basic GL/GLES Abstraction/Utility Layer
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*
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* Authored By Matthew Allum <mallum@openedhand.com>
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*
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* Copyright (C) 2007 OpenedHand
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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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#ifndef __COGL_BITMAP_H
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#define __COGL_BITMAP_H
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#include <glib.h>
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#include "cogl-object-private.h"
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#include "cogl-buffer.h"
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#include "cogl-bitmap.h"
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#ifdef COGL_HAS_ANDROID_SUPPORT
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#include <android/asset_manager.h>
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#endif
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struct _CoglBitmap
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{
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CoglObject _parent;
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/* Pointer back to the context that this bitmap was created with */
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CoglContext *context;
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CoglPixelFormat format;
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int width;
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int height;
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int rowstride;
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uint8_t *data;
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CoglBool mapped;
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CoglBool bound;
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/* If this is non-null then 'data' is ignored and instead it is
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fetched from this shared bitmap. */
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CoglBitmap *shared_bmp;
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/* If this is non-null then 'data' is treated as an offset into the
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buffer and map will divert to mapping the buffer */
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CoglBuffer *buffer;
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};
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/*
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* _cogl_bitmap_new_with_malloc_buffer:
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* @context: A #CoglContext
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* @width: width of the bitmap in pixels
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* @height: height of the bitmap in pixels
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* @format: the format of the pixels the array will store
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* @error: A #CoglError for catching exceptional errors or %NULL
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*
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* This is equivalent to cogl_bitmap_new_with_size() except that it
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* allocated the buffer using g_malloc() instead of creating a
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* #CoglPixelBuffer. The buffer will be automatically destroyed when
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* the bitmap is freed.
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*
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* Return value: a #CoglPixelBuffer representing the newly created array
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*
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* Since: 1.10
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* Stability: Unstable
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*/
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CoglBitmap *
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_cogl_bitmap_new_with_malloc_buffer (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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CoglError **error);
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/* The idea of this function is that it will create a bitmap that
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shares the actual data with another bitmap. This is needed for the
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atlas texture backend because it needs upload a bitmap to a sub
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texture but override the format so that it ignores the premult
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flag. */
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CoglBitmap *
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_cogl_bitmap_new_shared (CoglBitmap *shared_bmp,
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CoglPixelFormat format,
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int width,
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int height,
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int rowstride);
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CoglBitmap *
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_cogl_bitmap_convert (CoglBitmap *bmp,
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CoglPixelFormat dst_format,
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CoglError **error);
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CoglBitmap *
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_cogl_bitmap_convert_for_upload (CoglBitmap *src_bmp,
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CoglPixelFormat internal_format,
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CoglBool can_convert_in_place,
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CoglError **error);
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CoglBool
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_cogl_bitmap_convert_into_bitmap (CoglBitmap *src_bmp,
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CoglBitmap *dst_bmp,
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CoglError **error);
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CoglBitmap *
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_cogl_bitmap_from_file (CoglContext *ctx,
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const char *filename,
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CoglError **error);
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#ifdef COGL_HAS_ANDROID_SUPPORT
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CoglBitmap *
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_cogl_android_bitmap_new_from_asset (CoglContext *ctx,
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AAssetManager *manager,
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const char *filename,
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CoglError **error);
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#endif
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CoglBool
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_cogl_bitmap_unpremult (CoglBitmap *dst_bmp,
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CoglError **error);
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CoglBool
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_cogl_bitmap_premult (CoglBitmap *dst_bmp,
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CoglError **error);
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CoglBool
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_cogl_bitmap_convert_premult_status (CoglBitmap *bmp,
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CoglPixelFormat dst_format,
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CoglError **error);
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CoglBool
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_cogl_bitmap_copy_subregion (CoglBitmap *src,
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CoglBitmap *dst,
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int src_x,
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int src_y,
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int dst_x,
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int dst_y,
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int width,
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int height,
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CoglError **error);
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/* Creates a deep copy of the source bitmap */
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CoglBitmap *
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_cogl_bitmap_copy (CoglBitmap *src_bmp,
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CoglError **error);
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CoglBool
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_cogl_bitmap_get_size_from_file (const char *filename,
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int *width,
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int *height);
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void
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_cogl_bitmap_set_format (CoglBitmap *bitmap,
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CoglPixelFormat format);
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/* Maps the bitmap so that the pixels can be accessed directly or if
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the bitmap is just a memory bitmap then it just returns the pointer
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to memory. Note that the bitmap isn't guaranteed to allocated to
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the full size of rowstride*height so it is not safe to read up to
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the rowstride of the last row. This will be the case if the user
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uploads data using gdk_pixbuf_new_subpixbuf with a sub region
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containing the last row of the pixbuf because in that case the
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rowstride can be much larger than the width of the image */
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uint8_t *
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_cogl_bitmap_map (CoglBitmap *bitmap,
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CoglBufferAccess access,
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CoglBufferMapHint hints,
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CoglError **error);
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void
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_cogl_bitmap_unmap (CoglBitmap *bitmap);
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/* These two are replacements for map and unmap that should used when
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* the pointer is going to be passed to GL for pixel packing or
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* unpacking. The address might not be valid for reading if the bitmap
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* was created with new_from_buffer but it will however be good to
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* pass to glTexImage2D for example. The access should be READ for
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* unpacking and WRITE for packing. It can not be both
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*
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* TODO: split this bind/unbind functions out into a GL specific file
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*/
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uint8_t *
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_cogl_bitmap_gl_bind (CoglBitmap *bitmap,
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CoglBufferAccess access,
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CoglBufferMapHint hints,
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CoglError **error);
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void
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_cogl_bitmap_gl_unbind (CoglBitmap *bitmap);
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CoglContext *
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_cogl_bitmap_get_context (CoglBitmap *bitmap);
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#endif /* __COGL_BITMAP_H */
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