346 lines
11 KiB
C
346 lines
11 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) 2008,2009 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, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#if !defined(__COGL_H_INSIDE__) && !defined(CLUTTER_COMPILATION)
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#error "Only <cogl/cogl.h> can be included directly."
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#endif
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#ifndef __COGL_TYPES_H__
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#define __COGL_TYPES_H__
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#include <glib-object.h>
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G_BEGIN_DECLS
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/**
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* CoglHandle:
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*
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* Type used for storing references to cogl objects, the CoglHandle is
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* a fully opaque type without any public data members.
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*/
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typedef gpointer CoglHandle;
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/**
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* COGL_INVALID_HANDLE:
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*
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* A COGL handle that is not valid, used for unitialized handles as well as
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* error conditions.
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*/
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#define COGL_INVALID_HANDLE NULL
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#define COGL_TYPE_HANDLE (cogl_handle_get_type ())
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GType cogl_handle_get_type (void) G_GNUC_CONST;
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/**
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* cogl_handle_ref:
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* @handle: a #CoglHandle
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*
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* Increases the reference count of @handle by 1
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*
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* Returns: the handle, with its reference count increased
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*/
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CoglHandle cogl_handle_ref (CoglHandle handle);
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/**
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* cogl_handle_unref:
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* @handle: a #CoglHandle
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*
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* Drecreases the reference count of @handle by 1; if the reference
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* count reaches 0, the resources allocated by @handle will be freed
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*/
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void cogl_handle_unref (CoglHandle Handle);
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/**
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* CoglFuncPtr:
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*
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* The type used by cogl for function pointers, note that this type
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* is used as a generic catch-all cast for function pointers and the
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* actual arguments and return type may be different.
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*/
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typedef void (* CoglFuncPtr) (void);
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/**
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* CoglFixed:
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*
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* Fixed point number using a (16.16) notation.
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*/
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typedef gint32 CoglFixed;
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#define COGL_TYPE_FIXED (cogl_fixed_get_type ())
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GType cogl_fixed_get_type (void) G_GNUC_CONST;
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/**
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* CoglAngle:
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*
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* Integer representation of an angle such that 1024 corresponds to
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* full circle (i.e., 2 * pi).
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*
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* Since: 1.0
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*/
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typedef gint32 CoglAngle;
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typedef struct _CoglColor CoglColor;
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typedef struct _CoglTextureVertex CoglTextureVertex;
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/* Enum declarations */
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#define COGL_PIXEL_FORMAT_24 2
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#define COGL_PIXEL_FORMAT_32 3
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#define COGL_A_BIT (1 << 4)
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#define COGL_BGR_BIT (1 << 5)
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#define COGL_AFIRST_BIT (1 << 6)
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#define COGL_PREMULT_BIT (1 << 7)
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#define COGL_UNORDERED_MASK 0x0F
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#define COGL_UNPREMULT_MASK 0x7F
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/**
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* CoglPixelFormat:
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* @COGL_PIXEL_FORMAT_ANY: Any format
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* @COGL_PIXEL_FORMAT_A_8: 8 bits alpha mask
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* @COGL_PIXEL_FORMAT_RGB_565: RGB, 16 bits
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* @COGL_PIXEL_FORMAT_RGBA_4444: RGBA, 16 bits
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* @COGL_PIXEL_FORMAT_RGBA_5551: RGBA, 16 bits
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* @COGL_PIXEL_FORMAT_YUV: Not currently supported
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* @COGL_PIXEL_FORMAT_G_8: Single luminance component
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* @COGL_PIXEL_FORMAT_RGB_888: RGB, 24 bits
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* @COGL_PIXEL_FORMAT_BGR_888: BGR, 24 bits
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* @COGL_PIXEL_FORMAT_RGBA_8888: RGBA, 32 bits
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* @COGL_PIXEL_FORMAT_BGRA_8888: BGRA, 32 bits
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* @COGL_PIXEL_FORMAT_ARGB_8888: ARGB, 32 bits
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* @COGL_PIXEL_FORMAT_ABGR_8888: ABGR, 32 bits
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* @COGL_PIXEL_FORMAT_RGBA_8888_PRE: Premultiplied RGBA, 32 bits
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* @COGL_PIXEL_FORMAT_BGRA_8888_PRE: Premultiplied BGRA, 32 bits
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* @COGL_PIXEL_FORMAT_ARGB_8888_PRE: Premultiplied ARGB, 32 bits
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* @COGL_PIXEL_FORMAT_ABGR_8888_PRE: Premultiplied ABGR, 32 bits
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* @COGL_PIXEL_FORMAT_RGBA_4444_PRE: Premultiplied RGBA, 16 bits
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* @COGL_PIXEL_FORMAT_RGBA_5551_PRE: Premultiplied RGBA, 16 bits
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*
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* Pixel formats used by COGL. For the formats with a byte per
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* component, the order of the components specify the order in
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* increasing memory addresses. So for example
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* %COGL_PIXEL_FORMAT_RGB_888 would have the red component in the
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* lowest address, green in the next address and blue after that
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* regardless of the endinanness of the system.
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*
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* For the 16-bit formats the component order specifies the order
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* within a 16-bit number from most significant bit to least
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* significant. So for %COGL_PIXEL_FORMAT_RGB_565, the red component
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* would be in bits 11-15, the green component would be in 6-11 and
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* the blue component would be in 1-5. Therefore the order in memory
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* depends on the endianness of the system.
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*
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* When uploading a texture %COGL_PIXEL_FORMAT_ANY can be used as the
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* internal format. Cogl will try to pick the best format to use
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* internally and convert the texture data if necessary.
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*
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* Since: 0.8
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*/
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typedef enum { /*< prefix=COGL_PIXEL_FORMAT >*/
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COGL_PIXEL_FORMAT_ANY = 0,
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COGL_PIXEL_FORMAT_A_8 = 1 | COGL_A_BIT,
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COGL_PIXEL_FORMAT_RGB_565 = 4,
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COGL_PIXEL_FORMAT_RGBA_4444 = 5 | COGL_A_BIT,
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COGL_PIXEL_FORMAT_RGBA_5551 = 6 | COGL_A_BIT,
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COGL_PIXEL_FORMAT_YUV = 7,
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COGL_PIXEL_FORMAT_G_8 = 8,
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COGL_PIXEL_FORMAT_RGB_888 = COGL_PIXEL_FORMAT_24,
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COGL_PIXEL_FORMAT_BGR_888 = (COGL_PIXEL_FORMAT_24 | COGL_BGR_BIT),
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COGL_PIXEL_FORMAT_RGBA_8888 = (COGL_PIXEL_FORMAT_32 | COGL_A_BIT),
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COGL_PIXEL_FORMAT_BGRA_8888 = (COGL_PIXEL_FORMAT_32 | COGL_A_BIT | COGL_BGR_BIT),
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COGL_PIXEL_FORMAT_ARGB_8888 = (COGL_PIXEL_FORMAT_32 | COGL_A_BIT | COGL_AFIRST_BIT),
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COGL_PIXEL_FORMAT_ABGR_8888 = (COGL_PIXEL_FORMAT_32 | COGL_A_BIT | COGL_BGR_BIT | COGL_AFIRST_BIT),
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COGL_PIXEL_FORMAT_RGBA_8888_PRE = (COGL_PIXEL_FORMAT_32 | COGL_A_BIT | COGL_PREMULT_BIT),
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COGL_PIXEL_FORMAT_BGRA_8888_PRE = (COGL_PIXEL_FORMAT_32 | COGL_A_BIT | COGL_PREMULT_BIT | COGL_BGR_BIT),
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COGL_PIXEL_FORMAT_ARGB_8888_PRE = (COGL_PIXEL_FORMAT_32 | COGL_A_BIT | COGL_PREMULT_BIT | COGL_AFIRST_BIT),
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COGL_PIXEL_FORMAT_ABGR_8888_PRE = (COGL_PIXEL_FORMAT_32 | COGL_A_BIT | COGL_PREMULT_BIT | COGL_BGR_BIT | COGL_AFIRST_BIT),
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COGL_PIXEL_FORMAT_RGBA_4444_PRE = (COGL_PIXEL_FORMAT_RGBA_4444 | COGL_A_BIT | COGL_PREMULT_BIT),
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COGL_PIXEL_FORMAT_RGBA_5551_PRE = (COGL_PIXEL_FORMAT_RGBA_5551 | COGL_A_BIT | COGL_PREMULT_BIT),
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} CoglPixelFormat;
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/**
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* CoglFeatureFlags:
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* @COGL_FEATURE_TEXTURE_RECTANGLE: ARB_texture_rectangle support
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* @COGL_FEATURE_TEXTURE_NPOT: ARB_texture_non_power_of_two support
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* @COGL_FEATURE_TEXTURE_YUV: ycbcr conversion support
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* @COGL_FEATURE_TEXTURE_READ_PIXELS: glReadPixels() support
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* @COGL_FEATURE_SHADERS_GLSL: GLSL support
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* @COGL_FEATURE_OFFSCREEN: FBO support
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* @COGL_FEATURE_OFFSCREEN_MULTISAMPLE: Multisample support on FBOs
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* @COGL_FEATURE_OFFSCREEN_BLIT: Blit support on FBOs
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* @COGL_FEATURE_FOUR_CLIP_PLANES: At least 4 clip planes available
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* @COGL_FEATURE_STENCIL_BUFFER: Stencil buffer support
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* @COGL_FEATURE_VBOS: VBO support
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*
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* Flags for the supported features.
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*
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* Since: 0.8
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*/
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typedef enum
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{
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COGL_FEATURE_TEXTURE_RECTANGLE = (1 << 1),
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COGL_FEATURE_TEXTURE_NPOT = (1 << 2),
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COGL_FEATURE_TEXTURE_YUV = (1 << 3),
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COGL_FEATURE_TEXTURE_READ_PIXELS = (1 << 4),
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COGL_FEATURE_SHADERS_GLSL = (1 << 5),
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COGL_FEATURE_OFFSCREEN = (1 << 6),
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COGL_FEATURE_OFFSCREEN_MULTISAMPLE = (1 << 7),
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COGL_FEATURE_OFFSCREEN_BLIT = (1 << 8),
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COGL_FEATURE_FOUR_CLIP_PLANES = (1 << 9),
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COGL_FEATURE_STENCIL_BUFFER = (1 << 10),
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COGL_FEATURE_VBOS = (1 << 11)
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} CoglFeatureFlags;
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/**
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* CoglBufferTarget:
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* @COGL_WINDOW_BUFFER: FIXME
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* @COGL_OFFSCREEN_BUFFER: FIXME
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*
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* Target flags for FBOs.
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*
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* Since: 0.8
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*/
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typedef enum
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{
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COGL_WINDOW_BUFFER = (1 << 1),
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COGL_OFFSCREEN_BUFFER = (1 << 2)
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} CoglBufferTarget;
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/**
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* CoglColor:
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*
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* A structure for holding a color definition. The contents of
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* the CoglColor structure are private and should never by accessed
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* directly.
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*
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* Since: 1.0
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*/
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struct _CoglColor
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{
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/*< private >*/
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guint8 red;
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guint8 green;
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guint8 blue;
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guint8 alpha;
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/* padding in case we want to change to floats at
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* some point */
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guint32 padding0;
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guint32 padding1;
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guint32 padding2;
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};
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/**
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* CoglTextureVertex:
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* @x: Model x-coordinate
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* @y: Model y-coordinate
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* @z: Model z-coordinate
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* @tx: Texture x-coordinate
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* @ty: Texture y-coordinate
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* @color: The color to use at this vertex. This is ignored if
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* use_color is %FALSE when calling cogl_polygon()
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*
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* Used to specify vertex information when calling cogl_polygon()
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*/
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struct _CoglTextureVertex
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{
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float x, y, z;
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float tx, ty;
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CoglColor color;
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};
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/**
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* CoglTextureFlags:
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* @COGL_TEXTURE_NONE: No flags specified
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* @COGL_TEXTURE_NO_AUTO_MIPMAP: Disables the automatic generation of
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* the mipmap pyramid from the base level image whenever it is
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* updated. The mipmaps are only generated when the texture is
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* rendered with a mipmap filter so it should be free to leave out
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* this flag when using other filtering modes.
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* @COGL_TEXTURE_NO_SLICING: Disables the slicing of the texture
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*
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* Flags to pass to the cogl_texture_new_* family of functions.
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*
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* Since: 1.0
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*/
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typedef enum {
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COGL_TEXTURE_NONE = 0,
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COGL_TEXTURE_NO_AUTO_MIPMAP = 1 << 0,
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COGL_TEXTURE_NO_SLICING = 1 << 1,
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COGL_TEXTURE_NO_ATLAS = 1 << 2
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} CoglTextureFlags;
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/**
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* CoglFogMode:
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* @COGL_FOG_MODE_LINEAR: Calculates the fog blend factor as:
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* |[
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* f = end - eye_distance / end - start
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* ]|
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* @COGL_FOG_MODE_EXPONENTIAL: Calculates the fog blend factor as:
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* |[
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* f = e ^ -(density * eye_distance)
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* ]|
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* @COGL_FOG_MODE_EXPONENTIAL_SQUARED: Calculates the fog blend factor as:
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* |[
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* f = e ^ -(density * eye_distance)^2
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* ]|
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*
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* The fog mode determines the equation used to calculate the fogging blend
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* factor while fogging is enabled. The simplest %COGL_FOG_MODE_LINEAR mode
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* determines f as:
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*
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* |[
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* f = end - eye_distance / end - start
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* ]|
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*
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* Where eye_distance is the distance of the current fragment in eye
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* coordinates from the origin.
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*
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* Since: 1.0
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*/
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typedef enum {
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COGL_FOG_MODE_LINEAR,
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COGL_FOG_MODE_EXPONENTIAL,
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COGL_FOG_MODE_EXPONENTIAL_SQUARED
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} CoglFogMode;
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#define COGL_BLEND_STRING_ERROR (cogl_blend_string_error_quark ())
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typedef enum { /*< prefix=COGL_BLEND_STRING_ERROR >*/
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COGL_BLEND_STRING_ERROR_PARSE_ERROR,
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COGL_BLEND_STRING_ERROR_ARGUMENT_PARSE_ERROR,
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COGL_BLEND_STRING_ERROR_INVALID_ERROR,
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COGL_BLEND_STRING_ERROR_GPU_UNSUPPORTED_ERROR
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} CoglBlendStringError;
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GQuark cogl_blend_string_error_quark (void);
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G_END_DECLS
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#endif /* __COGL_TYPES_H__ */
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