da3be3df6b
This adds a new API call to enable point sprite coordinate generation
for a material layer:
void
cogl_material_set_layer_point_sprite_coords_enabled (CoglHandle material,
int layer_index,
gboolean enable);
There is also a corresponding get function.
Enabling point sprite coords simply sets the GL_COORD_REPLACE of the
GL_POINT_SPRITE glTexEnv when flusing the material. There is no
separate application control for glEnable(GL_POINT_SPRITE). Instead it
is left permanently enabled under the assumption that it has no affect
unless GL_COORD_REPLACE is enabled for a texture unit.
http://bugzilla.openedhand.com/show_bug.cgi?id=2047
452 lines
14 KiB
C
452 lines
14 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, see <http://www.gnu.org/licenses/>.
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*
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*
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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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/* Some structures are meant to be opaque but they have public
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definitions because we want the size to be public so they can be
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allocated on the stack. This macro is used to ensure that users
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don't accidentally access private members */
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#ifdef CLUTTER_COMPILATION
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#define COGL_PRIVATE(x) x
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#else
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#define COGL_PRIVATE(x) private_member_ ## x
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#endif
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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
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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
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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
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cogl_handle_unref (CoglHandle handle);
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/**
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* cogl_object_ref:
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* @object: a #CoglObject
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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 @object, with its reference count increased
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*/
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void *
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cogl_object_ref (void *object);
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/**
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* cogl_object_unref:
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* @object: a #CoglObject
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*
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* Drecreases the reference count of @object by 1; if the reference
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* count reaches 0, the resources allocated by @object will be freed
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*/
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void
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cogl_object_unref (void *object);
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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
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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: Non power of two textures are supported
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* by the hardware. This is a equivalent to the
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* %COGL_FEATURE_TEXTURE_NPOT_BASIC, %COGL_FEATURE_TEXTURE_NPOT_MIPMAP
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* and %COGL_FEATURE_TEXTURE_NPOT_REPEAT features combined.
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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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* @COGL_FEATURE_PBOS: PBO support
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* @COGL_FEATURE_UNSIGNED_INT_INDICES: Set if
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* %COGL_INDICES_TYPE_UNSIGNED_INT is supported in
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* cogl_vertex_buffer_indices_new().
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* @COGL_FEATURE_DEPTH_RANGE: cogl_material_set_depth_range() support
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* @COGL_FEATURE_TEXTURE_NPOT_BASIC: The hardware supports non power
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* of two textures, but you also need to check the
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* %COGL_FEATURE_TEXTURE_NPOT_MIPMAP and %COGL_FEATURE_TEXTURE_NPOT_REPEAT
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* features to know if the hardware supports npot texture mipmaps
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* or repeat modes other than
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* %COGL_MATERIAL_WRAP_MODE_CLAMP_TO_EDGE respectively.
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* @COGL_FEATURE_TEXTURE_NPOT_MIPMAP: Mipmapping is supported in
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* conjuntion with non power of two textures.
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* @COGL_FEATURE_TEXTURE_NPOT_REPEAT: Repeat modes other than
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* %COGL_MATERIAL_WRAP_MODE_CLAMP_TO_EDGE are supported by the
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* hardware.
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* @COGL_FEATURE_POINT_SPRITE: Whether
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* cogl_material_set_layer_point_sprite_coords_enabled() is supported.
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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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COGL_FEATURE_PBOS = (1 << 12),
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COGL_FEATURE_UNSIGNED_INT_INDICES = (1 << 13),
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COGL_FEATURE_DEPTH_RANGE = (1 << 14),
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COGL_FEATURE_TEXTURE_NPOT_BASIC = (1 << 15),
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COGL_FEATURE_TEXTURE_NPOT_MIPMAP = (1 << 16),
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COGL_FEATURE_TEXTURE_NPOT_REPEAT = (1 << 17),
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COGL_FEATURE_POINT_SPRITE = (1 << 18)
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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 COGL_PRIVATE (red);
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guint8 COGL_PRIVATE (green);
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guint8 COGL_PRIVATE (blue);
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guint8 COGL_PRIVATE (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 COGL_PRIVATE (padding0);
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guint32 COGL_PRIVATE (padding1);
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guint32 COGL_PRIVATE (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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* @COGL_TEXTURE_NO_ATLAS: Disables the insertion of the texture inside
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* the texture atlas used by Cogl
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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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/**
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* COGL_BLEND_STRING_ERROR:
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*
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* #GError domain for blend string parser errors
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*
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* Since: 1.0
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*/
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#define COGL_BLEND_STRING_ERROR (cogl_blend_string_error_quark ())
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/**
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* CoglBlendStringError:
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* @COGL_BLEND_STRING_ERROR_PARSE_ERROR: Generic parse error
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* @COGL_BLEND_STRING_ERROR_ARGUMENT_PARSE_ERROR: Argument parse error
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* @COGL_BLEND_STRING_ERROR_INVALID_ERROR: Internal parser error
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* @COGL_BLEND_STRING_ERROR_GPU_UNSUPPORTED_ERROR: Blend string not
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* supported by the GPU
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*
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* Error enumeration for the blend strings parser
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*
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* Since: 1.0
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*/
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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
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cogl_blend_string_error_quark (void);
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#define COGL_ERROR (_cogl_error_quark ())
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/**
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* CoglError:
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* @COGL_ERROR_MISSING_FEATURE: You tried to use a feature not
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* currently available; likely because of missing driver support.
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*
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* Error enumeration for Cogl
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*
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* Currently this is only used by Cogl API marked as experimental so
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* this enum should also be considered experimental.
|
|
*
|
|
* Since: 1.4
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|
*/
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|
typedef enum { /*< prefix=COGL_ERROR >*/
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|
COGL_ERROR_MISSING_FEATURE
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|
} CoglError;
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|
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|
GQuark
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|
_cogl_error_quark (void);
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|
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|
G_END_DECLS
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|
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|
#endif /* __COGL_TYPES_H__ */
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