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527 lines
16 KiB
C
527 lines
16 KiB
C
/*
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* Cogl
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*
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* A Low Level GPU Graphics and Utilities API
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*
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* Copyright (C) 2008,2009 Intel Corporation.
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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*
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*/
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#if !defined(__COGL_H_INSIDE__) && !defined(COGL_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 <stdint.h>
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#include <stddef.h>
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#include <cogl/cogl-defines.h>
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#include <glib.h>
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#include <glib-object.h>
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G_BEGIN_DECLS
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/**
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* SECTION:cogl-types
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* @short_description: Types used throughout the library
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*
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* General types used by various Cogl functions.
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*/
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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 COGL_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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/* To help catch accidental changes to public structs that should
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* be stack allocated we use this macro to compile time assert that
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* a struct size is as expected.
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*/
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#define COGL_STRUCT_SIZE_ASSERT(TYPE, SIZE) \
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typedef struct { \
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char compile_time_assert_ ## TYPE ## _size[ \
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(sizeof (TYPE) == (SIZE)) ? 1 : -1]; \
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} _ ## TYPE ## SizeCheck
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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 void * CoglHandle;
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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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/* We forward declare this in cogl-types to avoid circular dependencies
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* between cogl-matrix.h and cogl-quaterion.h */
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typedef struct _CoglMatrix CoglMatrix;
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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 int32_t 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_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_DEPTH_BIT (1 << 8)
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#define COGL_STENCIL_BIT (1 << 9)
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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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* @red: amount of red
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* @green: amount of green
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* @blue: amount of green
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* @alpha: alpha
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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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uint8_t COGL_PRIVATE (red);
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uint8_t COGL_PRIVATE (green);
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uint8_t COGL_PRIVATE (blue);
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uint8_t 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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uint32_t COGL_PRIVATE (padding0);
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uint32_t COGL_PRIVATE (padding1);
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uint32_t COGL_PRIVATE (padding2);
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};
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COGL_STRUCT_SIZE_ASSERT (CoglColor, 16);
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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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COGL_STRUCT_SIZE_ASSERT (CoglTextureVertex, 36);
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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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{
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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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* 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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{
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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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uint32_t
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cogl_blend_string_error_quark (void);
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#define COGL_SYSTEM_ERROR (_cogl_system_error_quark ())
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/**
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* CoglSystemError:
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* @COGL_SYSTEM_ERROR_UNSUPPORTED: You tried to use a feature or
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* configuration not currently available.
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* @COGL_SYSTEM_ERROR_NO_MEMORY: You tried to allocate a resource
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* such as a texture and there wasn't enough memory.
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*
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* Error enumeration for Cogl
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*
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* The @COGL_SYSTEM_ERROR_UNSUPPORTED error can be thrown for a
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* variety of reasons. For example:
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*
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* <itemizedlist>
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* <listitem><para>You've tried to use a feature that is not
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* advertised by cogl_has_feature().</para></listitem>
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* <listitem><para>The GPU can not handle the configuration you have
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* requested. An example might be if you try to use too many texture
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* layers in a single #CoglPipeline</para></listitem>
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* <listitem><para>The driver does not support some
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* configuration.</para></listiem>
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* </itemizedlist>
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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.
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*
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* Since: 1.4
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* Stability: unstable
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*/
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typedef enum /*< prefix=COGL_ERROR >*/
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{
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COGL_SYSTEM_ERROR_UNSUPPORTED,
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COGL_SYSTEM_ERROR_NO_MEMORY
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} CoglSystemError;
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uint32_t
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_cogl_system_error_quark (void);
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/**
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* CoglAttributeType:
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* @COGL_ATTRIBUTE_TYPE_BYTE: Data is the same size of a byte
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* @COGL_ATTRIBUTE_TYPE_UNSIGNED_BYTE: Data is the same size of an
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* unsigned byte
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* @COGL_ATTRIBUTE_TYPE_SHORT: Data is the same size of a short integer
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* @COGL_ATTRIBUTE_TYPE_UNSIGNED_SHORT: Data is the same size of
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* an unsigned short integer
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* @COGL_ATTRIBUTE_TYPE_FLOAT: Data is the same size of a float
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*
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* Data types for the components of a vertex attribute.
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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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{
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COGL_ATTRIBUTE_TYPE_BYTE = 0x1400,
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COGL_ATTRIBUTE_TYPE_UNSIGNED_BYTE = 0x1401,
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COGL_ATTRIBUTE_TYPE_SHORT = 0x1402,
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COGL_ATTRIBUTE_TYPE_UNSIGNED_SHORT = 0x1403,
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COGL_ATTRIBUTE_TYPE_FLOAT = 0x1406
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} CoglAttributeType;
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/**
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* CoglIndicesType:
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* @COGL_INDICES_TYPE_UNSIGNED_BYTE: Your indices are unsigned bytes
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* @COGL_INDICES_TYPE_UNSIGNED_SHORT: Your indices are unsigned shorts
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* @COGL_INDICES_TYPE_UNSIGNED_INT: Your indices are unsigned ints
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*
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* You should aim to use the smallest data type that gives you enough
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* range, since it reduces the size of your index array and can help
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* reduce the demand on memory bandwidth.
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*
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* Note that %COGL_INDICES_TYPE_UNSIGNED_INT is only supported if the
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* %COGL_FEATURE_ID_UNSIGNED_INT_INDICES feature is available. This
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* should always be available on OpenGL but on OpenGL ES it will only
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* be available if the GL_OES_element_index_uint extension is
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* advertized.
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*/
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typedef enum
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{
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COGL_INDICES_TYPE_UNSIGNED_BYTE,
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COGL_INDICES_TYPE_UNSIGNED_SHORT,
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COGL_INDICES_TYPE_UNSIGNED_INT
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} CoglIndicesType;
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/**
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* CoglVerticesMode:
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* @COGL_VERTICES_MODE_POINTS: FIXME, equivalent to
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* <constant>GL_POINTS</constant>
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* @COGL_VERTICES_MODE_LINES: FIXME, equivalent to <constant>GL_LINES</constant>
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* @COGL_VERTICES_MODE_LINE_LOOP: FIXME, equivalent to
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* <constant>GL_LINE_LOOP</constant>
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* @COGL_VERTICES_MODE_LINE_STRIP: FIXME, equivalent to
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* <constant>GL_LINE_STRIP</constant>
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* @COGL_VERTICES_MODE_TRIANGLES: FIXME, equivalent to
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* <constant>GL_TRIANGLES</constant>
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* @COGL_VERTICES_MODE_TRIANGLE_STRIP: FIXME, equivalent to
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* <constant>GL_TRIANGLE_STRIP</constant>
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* @COGL_VERTICES_MODE_TRIANGLE_FAN: FIXME, equivalent to <constant>GL_TRIANGLE_FAN</constant>
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*
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* Different ways of interpreting vertices when drawing.
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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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{
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COGL_VERTICES_MODE_POINTS = 0x0000,
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COGL_VERTICES_MODE_LINES = 0x0001,
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COGL_VERTICES_MODE_LINE_LOOP = 0x0002,
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COGL_VERTICES_MODE_LINE_STRIP = 0x0003,
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COGL_VERTICES_MODE_TRIANGLES = 0x0004,
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COGL_VERTICES_MODE_TRIANGLE_STRIP = 0x0005,
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COGL_VERTICES_MODE_TRIANGLE_FAN = 0x0006
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} CoglVerticesMode;
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/* NB: The above definitions are taken from gl.h equivalents */
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/* XXX: should this be CoglMaterialDepthTestFunction?
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* It makes it very verbose but would be consistent with
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* CoglMaterialWrapMode */
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/**
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* CoglDepthTestFunction:
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* @COGL_DEPTH_TEST_FUNCTION_NEVER: Never passes.
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* @COGL_DEPTH_TEST_FUNCTION_LESS: Passes if the fragment's depth
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* value is less than the value currently in the depth buffer.
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* @COGL_DEPTH_TEST_FUNCTION_EQUAL: Passes if the fragment's depth
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* value is equal to the value currently in the depth buffer.
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* @COGL_DEPTH_TEST_FUNCTION_LEQUAL: Passes if the fragment's depth
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* value is less or equal to the value currently in the depth buffer.
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* @COGL_DEPTH_TEST_FUNCTION_GREATER: Passes if the fragment's depth
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* value is greater than the value currently in the depth buffer.
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* @COGL_DEPTH_TEST_FUNCTION_NOTEQUAL: Passes if the fragment's depth
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* value is not equal to the value currently in the depth buffer.
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* @COGL_DEPTH_TEST_FUNCTION_GEQUAL: Passes if the fragment's depth
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* value greater than or equal to the value currently in the depth buffer.
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* @COGL_DEPTH_TEST_FUNCTION_ALWAYS: Always passes.
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*
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* When using depth testing one of these functions is used to compare
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* the depth of an incoming fragment against the depth value currently
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* stored in the depth buffer. The function is changed using
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* cogl_depth_state_set_test_function().
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*
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* The test is only done when depth testing is explicitly enabled. (See
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* cogl_depth_state_set_test_enabled())
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*/
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typedef enum
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{
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COGL_DEPTH_TEST_FUNCTION_NEVER = 0x0200,
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COGL_DEPTH_TEST_FUNCTION_LESS = 0x0201,
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COGL_DEPTH_TEST_FUNCTION_EQUAL = 0x0202,
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COGL_DEPTH_TEST_FUNCTION_LEQUAL = 0x0203,
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COGL_DEPTH_TEST_FUNCTION_GREATER = 0x0204,
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COGL_DEPTH_TEST_FUNCTION_NOTEQUAL = 0x0205,
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COGL_DEPTH_TEST_FUNCTION_GEQUAL = 0x0206,
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COGL_DEPTH_TEST_FUNCTION_ALWAYS = 0x0207
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} CoglDepthTestFunction;
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/* NB: The above definitions are taken from gl.h equivalents */
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typedef enum /*< prefix=COGL_RENDERER_ERROR >*/
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{
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COGL_RENDERER_ERROR_XLIB_DISPLAY_OPEN,
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COGL_RENDERER_ERROR_BAD_CONSTRAINT
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} CoglRendererError;
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/**
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* CoglFilterReturn:
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* @COGL_FILTER_CONTINUE: The event was not handled, continues the
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* processing
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* @COGL_FILTER_REMOVE: Remove the event, stops the processing
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*
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* Return values for the #CoglXlibFilterFunc and #CoglWin32FilterFunc functions.
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*
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* Stability: Unstable
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*/
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typedef enum _CoglFilterReturn { /*< prefix=COGL_FILTER >*/
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COGL_FILTER_CONTINUE,
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COGL_FILTER_REMOVE
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} CoglFilterReturn;
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typedef enum _CoglWinsysFeature
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{
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/* Available if the window system can support multiple onscreen
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* framebuffers at the same time. */
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COGL_WINSYS_FEATURE_MULTIPLE_ONSCREEN,
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/* Available if onscreen framebuffer swaps can be automatically
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* throttled to the vblank frequency. */
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COGL_WINSYS_FEATURE_SWAP_THROTTLE,
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/* Available if its possible to query a counter that
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* increments at each vblank. */
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COGL_WINSYS_FEATURE_VBLANK_COUNTER,
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/* Available if its possible to wait until the next vertical
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* blank period */
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COGL_WINSYS_FEATURE_VBLANK_WAIT,
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/* Available if the window system supports mapping native
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* pixmaps to textures. */
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COGL_WINSYS_FEATURE_TEXTURE_FROM_PIXMAP,
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/* Available if the window system supports reporting an event
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* for swap buffer completions. */
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COGL_WINSYS_FEATURE_SWAP_BUFFERS_EVENT,
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/* Available if it's possible to swap a list of sub rectangles
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* from the back buffer to the front buffer */
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COGL_WINSYS_FEATURE_SWAP_REGION,
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/* Available if swap_region requests can be automatically throttled
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* to the vblank frequency. */
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COGL_WINSYS_FEATURE_SWAP_REGION_THROTTLE,
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/* Available if the swap region implementation won't tear and thus
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* only needs to be throttled to the framerate */
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COGL_WINSYS_FEATURE_SWAP_REGION_SYNCHRONIZED,
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/* Avaiable if the age of the back buffer can be queried */
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COGL_WINSYS_FEATURE_BUFFER_AGE,
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/* Avaiable if the winsys directly handles _SYNC and _COMPLETE events */
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COGL_WINSYS_FEATURE_SYNC_AND_COMPLETE_EVENT,
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COGL_WINSYS_FEATURE_N_FEATURES
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} CoglWinsysFeature;
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/**
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* CoglWinding:
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* @COGL_WINDING_CLOCKWISE: Vertices are in a clockwise order
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* @COGL_WINDING_COUNTER_CLOCKWISE: Vertices are in a counter-clockwise order
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*
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* Enum used to represent the two directions of rotation. This can be
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* used to set the front face for culling by calling
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* cogl_pipeline_set_front_face_winding().
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*/
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typedef enum
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{
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COGL_WINDING_CLOCKWISE,
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COGL_WINDING_COUNTER_CLOCKWISE
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} CoglWinding;
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/**
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* CoglBufferBit:
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* @COGL_BUFFER_BIT_COLOR: Selects the primary color buffer
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* @COGL_BUFFER_BIT_DEPTH: Selects the depth buffer
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* @COGL_BUFFER_BIT_STENCIL: Selects the stencil buffer
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*
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* Types of auxiliary buffers
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|
*
|
|
* Since: 1.0
|
|
*/
|
|
typedef enum
|
|
{
|
|
COGL_BUFFER_BIT_COLOR = 1L<<0,
|
|
COGL_BUFFER_BIT_DEPTH = 1L<<1,
|
|
COGL_BUFFER_BIT_STENCIL = 1L<<2
|
|
} CoglBufferBit;
|
|
|
|
/**
|
|
* CoglReadPixelsFlags:
|
|
* @COGL_READ_PIXELS_COLOR_BUFFER: Read from the color buffer
|
|
*
|
|
* Flags for cogl_framebuffer_read_pixels_into_bitmap()
|
|
*
|
|
* Since: 1.0
|
|
*/
|
|
typedef enum /*< prefix=COGL_READ_PIXELS >*/
|
|
{
|
|
COGL_READ_PIXELS_COLOR_BUFFER = 1L << 0
|
|
} CoglReadPixelsFlags;
|
|
|
|
/**
|
|
* CoglStereoMode:
|
|
* @COGL_STEREO_BOTH: draw to both stereo buffers
|
|
* @COGL_STEREO_LEFT: draw only to the left stereo buffer
|
|
* @COGL_STEREO_RIGHT: draw only to the left stereo buffer
|
|
*
|
|
* Represents how draw should affect the two buffers
|
|
* of a stereo framebuffer. See cogl_framebuffer_set_stereo_mode().
|
|
*/
|
|
typedef enum
|
|
{
|
|
COGL_STEREO_BOTH,
|
|
COGL_STEREO_LEFT,
|
|
COGL_STEREO_RIGHT
|
|
} CoglStereoMode;
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __COGL_TYPES_H__ */
|