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mutter/cogl-types.h
Robert Bragg 3336359abb [Automatic fixed-to-float.sh change] Applies all scripted changes 
This is the result of running a number of sed and perl scripts over the code to
do 90% of the work in converting from 16.16 fixed to single precision floating
point.

Note: A pristine cogl-fixed.c has been maintained as a standalone utility API
      so that applications may still take advantage of fixed point if they
      desire for certain optimisations where lower precision may be acceptable.

Note: no API changes were made in Clutter, only in Cogl.

Overview of changes:
- Within clutter/* all usage of the COGL_FIXED_ macros have been changed to use
the CLUTTER_FIXED_ macros.

- Within cogl/* all usage of the COGL_FIXED_ macros have been completly stripped
and expanded into code that works with single precision floats instead.

- Uses of cogl_fixed_* have been replaced with single precision math.h
alternatives.

- Uses of COGL_ANGLE_* and cogl_angle_* have been replaced so we use a float for
angles and math.h replacements.
2009-01-20 16:20:54 +00:00

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/* cogl-types.h: Shared COGL types
* This file is part of Clutter
*
* Copyright (C) 2008 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#if !defined(__COGL_H_INSIDE__) && !defined(CLUTTER_COMPILATION)
#error "Only <cogl/cogl.h> can be included directly."
#endif
#ifndef __COGL_TYPES_H__
#define __COGL_TYPES_H__
#include <glib.h>
G_BEGIN_DECLS
/**
* CoglBitmap:
*
* Type used for storing image data.
*/
typedef struct _CoglBitmap CoglBitmap;
/**
* CoglHandle:
*
* Type used for storing references to cogl objects, the CoglHandle is
* a fully opaque type without any public data members.
*/
typedef gpointer CoglHandle;
/**
* COGL_INVALID_HANDLE:
*
* A COGL handle that is not valid, used for unitialized handles as well as
* error conditions.
*/
#define COGL_INVALID_HANDLE NULL
/**
* CoglFuncPtr:
*
* The type used by cogl for function pointers, note that this type
* is used as a generic catch-all cast for function pointers and the
* actual arguments and return type may be different.
*/
typedef void (* CoglFuncPtr) (void);
/**
* CoglFixed:
*
* Fixed point number using a (16.16) notation.
*/
typedef gint32 CoglFixed;
/**
* CoglAngle:
*
* Integer representation of an angle such that 1024 corresponds to
* full circle (i.e., 2 * pi).
*
* Since: 1.0
*/
typedef gint32 CoglAngle;
typedef struct _CoglColor CoglColor;
typedef struct _CoglTextureVertex CoglTextureVertex;
/* Enum declarations */
#define COGL_PIXEL_FORMAT_24 2
#define COGL_PIXEL_FORMAT_32 3
#define COGL_A_BIT (1 << 4)
#define COGL_BGR_BIT (1 << 5)
#define COGL_AFIRST_BIT (1 << 6)
#define COGL_PREMULT_BIT (1 << 7)
#define COGL_UNORDERED_MASK 0x0F
#define COGL_UNPREMULT_MASK 0x7F
/**
* CoglPixelFormat:
* @COGL_PIXEL_FORMAT_ANY: Any format
* @COGL_PIXEL_FORMAT_A_8: 8 bits alpha mask
* @COGL_PIXEL_FORMAT_RGB_565: RGB, 16 bits
* @COGL_PIXEL_FORMAT_RGBA_4444: RGBA, 16 bits
* @COGL_PIXEL_FORMAT_RGBA_5551: RGBA, 16 bits
* @COGL_PIXEL_FORMAT_YUV: FIXME
* @COGL_PIXEL_FORMAT_G_8: FIXME
* @COGL_PIXEL_FORMAT_RGB_888: RGB, 24 bits
* @COGL_PIXEL_FORMAT_BGR_888: BGR, 24 bits
* @COGL_PIXEL_FORMAT_RGBA_8888: RGBA, 32 bits
* @COGL_PIXEL_FORMAT_BGRA_8888: BGRA, 32 bits
* @COGL_PIXEL_FORMAT_ARGB_8888: ARGB, 32 bits
* @COGL_PIXEL_FORMAT_ABGR_8888: ABGR, 32 bits
* @COGL_PIXEL_FORMAT_RGBA_8888_PRE: Premultiplied RGBA, 32 bits
* @COGL_PIXEL_FORMAT_BGRA_8888_PRE: Premultiplied BGRA, 32 bits
* @COGL_PIXEL_FORMAT_ARGB_8888_PRE: Premultiplied ARGB, 32 bits
* @COGL_PIXEL_FORMAT_ABGR_8888_PRE: Premultiplied ABGR, 32 bits
* @COGL_PIXEL_FORMAT_RGBA_4444_PRE: Premultiplied RGBA, 16 bits
* @COGL_PIXEL_FORMAT_RGBA_5551_PRE: Premultiplied RGBA, 16 bits
*
* Pixel formats used by COGL.
*
* Since: 0.8
*/
typedef enum
{
COGL_PIXEL_FORMAT_ANY = 0,
COGL_PIXEL_FORMAT_A_8 = 1 | COGL_A_BIT,
COGL_PIXEL_FORMAT_RGB_565 = 4,
COGL_PIXEL_FORMAT_RGBA_4444 = 5 | COGL_A_BIT,
COGL_PIXEL_FORMAT_RGBA_5551 = 6 | COGL_A_BIT,
COGL_PIXEL_FORMAT_YUV = 7,
COGL_PIXEL_FORMAT_G_8 = 8,
COGL_PIXEL_FORMAT_RGB_888 = COGL_PIXEL_FORMAT_24,
COGL_PIXEL_FORMAT_BGR_888 = (COGL_PIXEL_FORMAT_24 |
COGL_BGR_BIT),
COGL_PIXEL_FORMAT_RGBA_8888 = COGL_PIXEL_FORMAT_32 |
COGL_A_BIT,
COGL_PIXEL_FORMAT_BGRA_8888 = (COGL_PIXEL_FORMAT_32 |
COGL_A_BIT |
COGL_BGR_BIT),
COGL_PIXEL_FORMAT_ARGB_8888 = (COGL_PIXEL_FORMAT_32 |
COGL_A_BIT |
COGL_AFIRST_BIT),
COGL_PIXEL_FORMAT_ABGR_8888 = (COGL_PIXEL_FORMAT_32 |
COGL_A_BIT |
COGL_BGR_BIT |
COGL_AFIRST_BIT),
COGL_PIXEL_FORMAT_RGBA_8888_PRE = (COGL_PIXEL_FORMAT_32 |
COGL_A_BIT |
COGL_PREMULT_BIT),
COGL_PIXEL_FORMAT_BGRA_8888_PRE = (COGL_PIXEL_FORMAT_32 |
COGL_A_BIT |
COGL_PREMULT_BIT |
COGL_BGR_BIT),
COGL_PIXEL_FORMAT_ARGB_8888_PRE = (COGL_PIXEL_FORMAT_32 |
COGL_A_BIT |
COGL_PREMULT_BIT |
COGL_AFIRST_BIT),
COGL_PIXEL_FORMAT_ABGR_8888_PRE = (COGL_PIXEL_FORMAT_32 |
COGL_A_BIT |
COGL_PREMULT_BIT |
COGL_BGR_BIT |
COGL_AFIRST_BIT),
COGL_PIXEL_FORMAT_RGBA_4444_PRE = (COGL_PIXEL_FORMAT_RGBA_4444 |
COGL_A_BIT |
COGL_PREMULT_BIT),
COGL_PIXEL_FORMAT_RGBA_5551_PRE = (COGL_PIXEL_FORMAT_RGBA_5551 |
COGL_A_BIT |
COGL_PREMULT_BIT),
} CoglPixelFormat;
/**
* CoglFeatureFlags:
* @COGL_FEATURE_TEXTURE_RECTANGLE: ARB_texture_rectangle support
* @COGL_FEATURE_TEXTURE_NPOT: ARB_texture_non_power_of_two support
* @COGL_FEATURE_TEXTURE_YUV: ycbcr conversion support
* @COGL_FEATURE_TEXTURE_READ_PIXELS: glReadPixels() support
* @COGL_FEATURE_SHADERS_GLSL: GLSL support
* @COGL_FEATURE_OFFSCREEN: FBO support
* @COGL_FEATURE_OFFSCREEN_MULTISAMPLE: Multisample support on FBOs
* @COGL_FEATURE_OFFSCREEN_BLIT: Blit support on FBOs
* @COGL_FEATURE_FOUR_CLIP_PLANES: At least 4 clip planes available
* @COGL_FEATURE_STENCIL_BUFFER: Stencil buffer support
* @COGL_FEATURE_VBOS: VBO support
*
* Flags for the supported features.
*
* Since: 0.8
*/
typedef enum
{
COGL_FEATURE_TEXTURE_RECTANGLE = (1 << 1),
COGL_FEATURE_TEXTURE_NPOT = (1 << 2),
COGL_FEATURE_TEXTURE_YUV = (1 << 3),
COGL_FEATURE_TEXTURE_READ_PIXELS = (1 << 4),
COGL_FEATURE_SHADERS_GLSL = (1 << 5),
COGL_FEATURE_OFFSCREEN = (1 << 6),
COGL_FEATURE_OFFSCREEN_MULTISAMPLE = (1 << 7),
COGL_FEATURE_OFFSCREEN_BLIT = (1 << 8),
COGL_FEATURE_FOUR_CLIP_PLANES = (1 << 9),
COGL_FEATURE_STENCIL_BUFFER = (1 << 10),
COGL_FEATURE_VBOS = (1 << 11)
} CoglFeatureFlags;
/**
* CoglBufferTarget:
* @COGL_WINDOW_BUFFER: FIXME
* @COGL_MASK_BUFFER: FIXME
* @COGL_OFFSCREEN_BUFFER: FIXME
*
* Target flags for FBOs.
*
* Since: 0.8
*/
typedef enum
{
COGL_WINDOW_BUFFER = (1 << 1),
COGL_MASK_BUFFER = (1 << 2),
COGL_OFFSCREEN_BUFFER = (1 << 3)
} CoglBufferTarget;
/**
* CoglColor:
*
* A structure for holding a color definition. The contents of
* the CoglColor structure are private and should never by accessed
* directly.
*
* Since: 1.0
*/
struct _CoglColor
{
/*< private >*/
guint8 red;
guint8 green;
guint8 blue;
guint8 alpha;
};
/**
* CoglTextureVertex:
* @x: Model x-coordinate
* @y: Model y-coordinate
* @z: Model z-coordinate
* @tx: Texture x-coordinate
* @ty: Texture y-coordinate
* @color: The color to use at this vertex. This is ignored if
* @use_color is %FALSE when calling cogl_texture_polygon().
*
* Used to specify vertex information when calling cogl_texture_polygon().
*/
struct _CoglTextureVertex
{
float x, y, z;
float tx, ty;
CoglColor color;
};
G_END_DECLS
#endif /* __COGL_TYPES_H__ */
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