72f4ddf532
Since using addresses that might change is something that finally the FSF acknowledge as a plausible scenario (after changing address twice), the license blurb in the source files should use the URI for getting the license in case the library did not come with it. Not that URIs cannot possibly change, but at least it's easier to set up a redirection at the same place. As a side note: this commit closes the oldes bug in Clutter's bug report tool. http://bugzilla.openedhand.com/show_bug.cgi?id=521
378 lines
12 KiB
C
378 lines
12 KiB
C
/*
|
|
* Cogl
|
|
*
|
|
* An object oriented GL/GLES Abstraction/Utility Layer
|
|
*
|
|
* Copyright (C) 2008,2009 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-object.h>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
/**
|
|
* 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
|
|
|
|
#define COGL_TYPE_HANDLE (cogl_handle_get_type ())
|
|
GType
|
|
cogl_handle_get_type (void) G_GNUC_CONST;
|
|
|
|
/**
|
|
* cogl_handle_ref:
|
|
* @handle: a #CoglHandle
|
|
*
|
|
* Increases the reference count of @handle by 1
|
|
*
|
|
* Returns: the handle, with its reference count increased
|
|
*/
|
|
CoglHandle
|
|
cogl_handle_ref (CoglHandle handle);
|
|
|
|
/**
|
|
* cogl_handle_unref:
|
|
* @handle: a #CoglHandle
|
|
*
|
|
* Drecreases the reference count of @handle by 1; if the reference
|
|
* count reaches 0, the resources allocated by @handle will be freed
|
|
*/
|
|
void
|
|
cogl_handle_unref (CoglHandle Handle);
|
|
|
|
/**
|
|
* 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;
|
|
|
|
#define COGL_TYPE_FIXED (cogl_fixed_get_type ())
|
|
GType
|
|
cogl_fixed_get_type (void) G_GNUC_CONST;
|
|
|
|
/**
|
|
* 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: Not currently supported
|
|
* @COGL_PIXEL_FORMAT_G_8: Single luminance component
|
|
* @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. For the formats with a byte per
|
|
* component, the order of the components specify the order in
|
|
* increasing memory addresses. So for example
|
|
* %COGL_PIXEL_FORMAT_RGB_888 would have the red component in the
|
|
* lowest address, green in the next address and blue after that
|
|
* regardless of the endinanness of the system.
|
|
*
|
|
* For the 16-bit formats the component order specifies the order
|
|
* within a 16-bit number from most significant bit to least
|
|
* significant. So for %COGL_PIXEL_FORMAT_RGB_565, the red component
|
|
* would be in bits 11-15, the green component would be in 6-11 and
|
|
* the blue component would be in 1-5. Therefore the order in memory
|
|
* depends on the endianness of the system.
|
|
*
|
|
* When uploading a texture %COGL_PIXEL_FORMAT_ANY can be used as the
|
|
* internal format. Cogl will try to pick the best format to use
|
|
* internally and convert the texture data if necessary.
|
|
*
|
|
* Since: 0.8
|
|
*/
|
|
typedef enum { /*< prefix=COGL_PIXEL_FORMAT >*/
|
|
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
|
|
* @COGL_FEATURE_PBOS: PBO support
|
|
* @COGL_FEATURE_UNSIGNED_INT_INDICES: Set if
|
|
* %COGL_INDICES_TYPE_UNSIGNED_INT is supported in
|
|
* cogl_vertex_buffer_indices_new().
|
|
*
|
|
* 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),
|
|
COGL_FEATURE_PBOS = (1 << 12),
|
|
COGL_FEATURE_UNSIGNED_INT_INDICES = (1 << 13)
|
|
} CoglFeatureFlags;
|
|
|
|
/**
|
|
* CoglBufferTarget:
|
|
* @COGL_WINDOW_BUFFER: FIXME
|
|
* @COGL_OFFSCREEN_BUFFER: FIXME
|
|
*
|
|
* Target flags for FBOs.
|
|
*
|
|
* Since: 0.8
|
|
*/
|
|
typedef enum
|
|
{
|
|
COGL_WINDOW_BUFFER = (1 << 1),
|
|
COGL_OFFSCREEN_BUFFER = (1 << 2)
|
|
} 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;
|
|
|
|
/* padding in case we want to change to floats at
|
|
* some point */
|
|
guint32 padding0;
|
|
guint32 padding1;
|
|
guint32 padding2;
|
|
};
|
|
|
|
/**
|
|
* 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_polygon()
|
|
*
|
|
* Used to specify vertex information when calling cogl_polygon()
|
|
*/
|
|
struct _CoglTextureVertex
|
|
{
|
|
float x, y, z;
|
|
float tx, ty;
|
|
|
|
CoglColor color;
|
|
};
|
|
|
|
/**
|
|
* CoglTextureFlags:
|
|
* @COGL_TEXTURE_NONE: No flags specified
|
|
* @COGL_TEXTURE_NO_AUTO_MIPMAP: Disables the automatic generation of
|
|
* the mipmap pyramid from the base level image whenever it is
|
|
* updated. The mipmaps are only generated when the texture is
|
|
* rendered with a mipmap filter so it should be free to leave out
|
|
* this flag when using other filtering modes
|
|
* @COGL_TEXTURE_NO_SLICING: Disables the slicing of the texture
|
|
* @COGL_TEXTURE_NO_ATLAS: Disables the insertion of the texture inside
|
|
* the texture atlas used by Cogl
|
|
*
|
|
* Flags to pass to the cogl_texture_new_* family of functions.
|
|
*
|
|
* Since: 1.0
|
|
*/
|
|
typedef enum {
|
|
COGL_TEXTURE_NONE = 0,
|
|
COGL_TEXTURE_NO_AUTO_MIPMAP = 1 << 0,
|
|
COGL_TEXTURE_NO_SLICING = 1 << 1,
|
|
COGL_TEXTURE_NO_ATLAS = 1 << 2
|
|
} CoglTextureFlags;
|
|
|
|
/**
|
|
* CoglFogMode:
|
|
* @COGL_FOG_MODE_LINEAR: Calculates the fog blend factor as:
|
|
* |[
|
|
* f = end - eye_distance / end - start
|
|
* ]|
|
|
* @COGL_FOG_MODE_EXPONENTIAL: Calculates the fog blend factor as:
|
|
* |[
|
|
* f = e ^ -(density * eye_distance)
|
|
* ]|
|
|
* @COGL_FOG_MODE_EXPONENTIAL_SQUARED: Calculates the fog blend factor as:
|
|
* |[
|
|
* f = e ^ -(density * eye_distance)^2
|
|
* ]|
|
|
*
|
|
* The fog mode determines the equation used to calculate the fogging blend
|
|
* factor while fogging is enabled. The simplest %COGL_FOG_MODE_LINEAR mode
|
|
* determines f as:
|
|
*
|
|
* |[
|
|
* f = end - eye_distance / end - start
|
|
* ]|
|
|
*
|
|
* Where eye_distance is the distance of the current fragment in eye
|
|
* coordinates from the origin.
|
|
*
|
|
* Since: 1.0
|
|
*/
|
|
typedef enum {
|
|
COGL_FOG_MODE_LINEAR,
|
|
COGL_FOG_MODE_EXPONENTIAL,
|
|
COGL_FOG_MODE_EXPONENTIAL_SQUARED
|
|
} CoglFogMode;
|
|
|
|
/**
|
|
* COGL_BLEND_STRING_ERROR:
|
|
*
|
|
* #GError domain for blend string parser errors
|
|
*
|
|
* Since: 1.0
|
|
*/
|
|
#define COGL_BLEND_STRING_ERROR (cogl_blend_string_error_quark ())
|
|
|
|
/**
|
|
* CoglBlendStringError:
|
|
* @COGL_BLEND_STRING_ERROR_PARSE_ERROR: Generic parse error
|
|
* @COGL_BLEND_STRING_ERROR_ARGUMENT_PARSE_ERROR: Argument parse error
|
|
* @COGL_BLEND_STRING_ERROR_INVALID_ERROR: Internal parser error
|
|
* @COGL_BLEND_STRING_ERROR_GPU_UNSUPPORTED_ERROR: Blend string not
|
|
* supported by the GPU
|
|
*
|
|
* Error enumeration for the blend strings parser
|
|
*
|
|
* Since: 1.0
|
|
*/
|
|
typedef enum { /*< prefix=COGL_BLEND_STRING_ERROR >*/
|
|
COGL_BLEND_STRING_ERROR_PARSE_ERROR,
|
|
COGL_BLEND_STRING_ERROR_ARGUMENT_PARSE_ERROR,
|
|
COGL_BLEND_STRING_ERROR_INVALID_ERROR,
|
|
COGL_BLEND_STRING_ERROR_GPU_UNSUPPORTED_ERROR
|
|
} CoglBlendStringError;
|
|
|
|
GQuark
|
|
cogl_blend_string_error_quark (void);
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __COGL_TYPES_H__ */
|