e7e8978029
The texture filters are now a property of the material layer rather than the texture object. Whenever a texture is painted with a material it sets the filters on all of the GL textures in the Cogl texture. The filter is cached so that it won't be changed unnecessarily. The automatic mipmap generation has changed so that the mipmaps are only generated when the texture is painted instead of every time the data changes. Changing the texture sets a flag to mark that the mipmaps are dirty. This works better if the FBO extension is available because we can use glGenerateMipmap. If the extension is not available it will temporarily enable automatic mipmap generation and reupload the first pixel of each slice. This requires tracking the data for the first pixel. The COGL_TEXTURE_AUTO_MIPMAP flag has been replaced with COGL_TEXTURE_NO_AUTO_MIPMAP so that it will default to auto-mipmapping. The mipmap generation is now effectively free if you are not using a mipmap filter mode so you would only want to disable it if you had some special reason to generate your own mipmaps. ClutterTexture no longer has to store its own copy of the filter mode. Instead it stores it in the material and the property is directly set and read from that. This fixes problems with the filters getting out of sync when a cogl handle is set on the texture directly. It also avoids the mess of having to rerealize the texture if the filter quality changes to HIGH because Cogl will take of generating the mipmaps if needed.
300 lines
9 KiB
C
300 lines
9 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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CoglHandle cogl_handle_ref (CoglHandle handle);
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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: FIXME
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* @COGL_PIXEL_FORMAT_G_8: FIXME
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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.
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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_texture_polygon().
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*
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* Used to specify vertex information when calling cogl_texture_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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} 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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G_END_DECLS
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#endif /* __COGL_TYPES_H__ */
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