9b16b74b5d
You could probably move (most of) what's left into a static-inline kind of header that only gets consumed by the tests. https://gitlab.gnome.org/GNOME/mutter/merge_requests/922
644 lines
25 KiB
C
644 lines
25 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) 2007,2008,2009 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_MATERIAL_H__
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#define __COGL_MATERIAL_H__
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#include <cogl/cogl-types.h>
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#include <cogl/cogl-matrix.h>
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#include <cogl/cogl-depth-state.h>
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#include <cogl/cogl-macros.h>
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#include <cogl/cogl-object.h>
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G_BEGIN_DECLS
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/**
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* SECTION:cogl-material
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* @short_description: Fuctions for creating and manipulating materials
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*
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* COGL allows creating and manipulating materials used to fill in
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* geometry. Materials may simply be lighting attributes (such as an
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* ambient and diffuse colour) or might represent one or more textures
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* blended together.
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*/
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typedef struct _CoglMaterial CoglMaterial;
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typedef struct _CoglMaterialLayer CoglMaterialLayer;
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#define COGL_TYPE_MATERIAL (cogl_material_get_type ())
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GType cogl_material_get_type (void);
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#define COGL_MATERIAL(OBJECT) ((CoglMaterial *)OBJECT)
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/**
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* CoglMaterialFilter:
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* @COGL_MATERIAL_FILTER_NEAREST: Measuring in manhatten distance from the,
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* current pixel center, use the nearest texture texel
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* @COGL_MATERIAL_FILTER_LINEAR: Use the weighted average of the 4 texels
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* nearest the current pixel center
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* @COGL_MATERIAL_FILTER_NEAREST_MIPMAP_NEAREST: Select the mimap level whose
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* texel size most closely matches the current pixel, and use the
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* %COGL_MATERIAL_FILTER_NEAREST criterion
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* @COGL_MATERIAL_FILTER_LINEAR_MIPMAP_NEAREST: Select the mimap level whose
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* texel size most closely matches the current pixel, and use the
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* %COGL_MATERIAL_FILTER_LINEAR criterion
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* @COGL_MATERIAL_FILTER_NEAREST_MIPMAP_LINEAR: Select the two mimap levels
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* whose texel size most closely matches the current pixel, use
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* the %COGL_MATERIAL_FILTER_NEAREST criterion on each one and take
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* their weighted average
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* @COGL_MATERIAL_FILTER_LINEAR_MIPMAP_LINEAR: Select the two mimap levels
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* whose texel size most closely matches the current pixel, use
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* the %COGL_MATERIAL_FILTER_LINEAR criterion on each one and take
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* their weighted average
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*
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* Texture filtering is used whenever the current pixel maps either to more
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* than one texture element (texel) or less than one. These filter enums
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* correspond to different strategies used to come up with a pixel color, by
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* possibly referring to multiple neighbouring texels and taking a weighted
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* average or simply using the nearest texel.
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*/
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typedef enum
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{
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COGL_MATERIAL_FILTER_NEAREST = 0x2600,
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COGL_MATERIAL_FILTER_LINEAR = 0x2601,
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COGL_MATERIAL_FILTER_NEAREST_MIPMAP_NEAREST = 0x2700,
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COGL_MATERIAL_FILTER_LINEAR_MIPMAP_NEAREST = 0x2701,
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COGL_MATERIAL_FILTER_NEAREST_MIPMAP_LINEAR = 0x2702,
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COGL_MATERIAL_FILTER_LINEAR_MIPMAP_LINEAR = 0x2703
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} CoglMaterialFilter;
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/* NB: these values come from the equivalents in gl.h */
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/**
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* CoglMaterialWrapMode:
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* @COGL_MATERIAL_WRAP_MODE_REPEAT: The texture will be repeated. This
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* is useful for example to draw a tiled background.
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* @COGL_MATERIAL_WRAP_MODE_CLAMP_TO_EDGE: The coordinates outside the
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* range 0→1 will sample copies of the edge pixels of the
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* texture. This is useful to avoid artifacts if only one copy of
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* the texture is being rendered.
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* @COGL_MATERIAL_WRAP_MODE_AUTOMATIC: Cogl will try to automatically
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* decide which of the above two to use. For cogl_rectangle(), it
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* will use repeat mode if any of the texture coordinates are
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* outside the range 0→1, otherwise it will use clamp to edge. For
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* cogl_polygon() it will always use repeat mode. For
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* cogl_vertex_buffer_draw() it will use repeat mode except for
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* layers that have point sprite coordinate generation enabled. This
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* is the default value.
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*
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* The wrap mode specifies what happens when texture coordinates
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* outside the range 0→1 are used. Note that if the filter mode is
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* anything but %COGL_MATERIAL_FILTER_NEAREST then texels outside the
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* range 0→1 might be used even when the coordinate is exactly 0 or 1
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* because OpenGL will try to sample neighbouring pixels. For example
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* if you are trying to render the full texture then you may get
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* artifacts around the edges when the pixels from the other side are
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* merged in if the wrap mode is set to repeat.
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*
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* Since: 1.4
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*/
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/* GL_ALWAYS is just used here as a value that is known not to clash
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* with any valid GL wrap modes
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*
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* XXX: keep the values in sync with the CoglMaterialWrapModeInternal
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* enum so no conversion is actually needed.
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*/
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typedef enum
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{
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COGL_MATERIAL_WRAP_MODE_REPEAT = 0x2901,
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COGL_MATERIAL_WRAP_MODE_CLAMP_TO_EDGE = 0x812F,
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COGL_MATERIAL_WRAP_MODE_AUTOMATIC = 0x0207
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} CoglMaterialWrapMode;
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/* NB: these values come from the equivalents in gl.h */
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/**
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* cogl_material_new:
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*
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* Allocates and initializes a blank white material
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*
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* Return value: a pointer to a new #CoglMaterial
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* Deprecated: 1.16: Use cogl_pipeline_new() instead
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*/
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COGL_DEPRECATED_FOR (cogl_pipeline_new)
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CoglMaterial *
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cogl_material_new (void);
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/**
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* cogl_material_set_color:
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* @material: A #CoglMaterial object
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* @color: The components of the color
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*
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* Sets the basic color of the material, used when no lighting is enabled.
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*
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* Note that if you don't add any layers to the material then the color
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* will be blended unmodified with the destination; the default blend
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* expects premultiplied colors: for example, use (0.5, 0.0, 0.0, 0.5) for
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* semi-transparent red. See cogl_color_premultiply().
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*
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* The default value is (1.0, 1.0, 1.0, 1.0)
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*
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* Since: 1.0
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* Deprecated: 1.16: Use cogl_pipeline_set_color() instead
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*/
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COGL_DEPRECATED_FOR (cogl_pipeline_set_color)
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void
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cogl_material_set_color (CoglMaterial *material,
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const CoglColor *color);
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/**
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* cogl_material_set_color4ub:
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* @material: A #CoglMaterial object
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* @red: The red component
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* @green: The green component
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* @blue: The blue component
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* @alpha: The alpha component
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*
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* Sets the basic color of the material, used when no lighting is enabled.
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*
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* The default value is (0xff, 0xff, 0xff, 0xff)
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*
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* Since: 1.0
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* Deprecated: 1.16: Use cogl_pipeline_set_color4ub() instead
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*/
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COGL_DEPRECATED_FOR (cogl_pipeline_set_color4ub)
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void
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cogl_material_set_color4ub (CoglMaterial *material,
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uint8_t red,
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uint8_t green,
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uint8_t blue,
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uint8_t alpha);
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/**
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* CoglMaterialAlphaFunc:
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* @COGL_MATERIAL_ALPHA_FUNC_NEVER: Never let the fragment through.
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* @COGL_MATERIAL_ALPHA_FUNC_LESS: Let the fragment through if the incoming
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* alpha value is less than the reference alpha value
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* @COGL_MATERIAL_ALPHA_FUNC_EQUAL: Let the fragment through if the incoming
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* alpha value equals the reference alpha value
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* @COGL_MATERIAL_ALPHA_FUNC_LEQUAL: Let the fragment through if the incoming
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* alpha value is less than or equal to the reference alpha value
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* @COGL_MATERIAL_ALPHA_FUNC_GREATER: Let the fragment through if the incoming
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* alpha value is greater than the reference alpha value
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* @COGL_MATERIAL_ALPHA_FUNC_NOTEQUAL: Let the fragment through if the incoming
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* alpha value does not equal the reference alpha value
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* @COGL_MATERIAL_ALPHA_FUNC_GEQUAL: Let the fragment through if the incoming
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* alpha value is greater than or equal to the reference alpha value.
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* @COGL_MATERIAL_ALPHA_FUNC_ALWAYS: Always let the fragment through.
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*
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* Alpha testing happens before blending primitives with the framebuffer and
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* gives an opportunity to discard fragments based on a comparison with the
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* incoming alpha value and a reference alpha value. The #CoglMaterialAlphaFunc
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* determines how the comparison is done.
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*/
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typedef enum
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{
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COGL_MATERIAL_ALPHA_FUNC_NEVER = 0x0200,
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COGL_MATERIAL_ALPHA_FUNC_LESS = 0x0201,
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COGL_MATERIAL_ALPHA_FUNC_EQUAL = 0x0202,
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COGL_MATERIAL_ALPHA_FUNC_LEQUAL = 0x0203,
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COGL_MATERIAL_ALPHA_FUNC_GREATER = 0x0204,
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COGL_MATERIAL_ALPHA_FUNC_NOTEQUAL = 0x0205,
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COGL_MATERIAL_ALPHA_FUNC_GEQUAL = 0x0206,
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COGL_MATERIAL_ALPHA_FUNC_ALWAYS = 0x0207
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} CoglMaterialAlphaFunc;
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/**
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* cogl_material_set_alpha_test_function:
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* @material: A #CoglMaterial object
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* @alpha_func: A @CoglMaterialAlphaFunc constant
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* @alpha_reference: A reference point that the chosen alpha function uses
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* to compare incoming fragments to.
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*
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* Before a primitive is blended with the framebuffer, it goes through an
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* alpha test stage which lets you discard fragments based on the current
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* alpha value. This function lets you change the function used to evaluate
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* the alpha channel, and thus determine which fragments are discarded
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* and which continue on to the blending stage.
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*
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* The default is %COGL_MATERIAL_ALPHA_FUNC_ALWAYS
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*
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* Since: 1.0
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* Deprecated: 1.16: Use cogl_pipeline_set_alpha_test_function() instead
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*/
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COGL_DEPRECATED_FOR (cogl_pipeline_set_alpha_test_function)
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void
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cogl_material_set_alpha_test_function (CoglMaterial *material,
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CoglMaterialAlphaFunc alpha_func,
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float alpha_reference);
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/**
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* cogl_material_set_blend:
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* @material: A #CoglMaterial object
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* @blend_string: A <link linkend="cogl-Blend-Strings">Cogl blend string</link>
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* describing the desired blend function.
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* @error: return location for a #GError that may report lack of driver
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* support if you give separate blend string statements for the alpha
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* channel and RGB channels since some drivers, or backends such as
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* GLES 1.1, don't support this feature. May be %NULL, in which case a
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* warning will be printed out using GLib's logging facilities if an
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* error is encountered.
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*
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* If not already familiar; please refer <link linkend="cogl-Blend-Strings">here</link>
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* for an overview of what blend strings are, and their syntax.
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*
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* Blending occurs after the alpha test function, and combines fragments with
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* the framebuffer.
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* Currently the only blend function Cogl exposes is ADD(). So any valid
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* blend statements will be of the form:
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*
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* |[
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* <channel-mask>=ADD(SRC_COLOR*(<factor>), DST_COLOR*(<factor>))
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* ]|
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*
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* <warning>The brackets around blend factors are currently not
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* optional!</warning>
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*
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* This is the list of source-names usable as blend factors:
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* <itemizedlist>
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* <listitem><para>SRC_COLOR: The color of the in comming fragment</para></listitem>
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* <listitem><para>DST_COLOR: The color of the framebuffer</para></listitem>
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* <listitem><para>CONSTANT: The constant set via cogl_material_set_blend_constant()</para></listitem>
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* </itemizedlist>
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*
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* The source names can be used according to the
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* <link linkend="cogl-Blend-String-syntax">color-source and factor syntax</link>,
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* so for example "(1-SRC_COLOR[A])" would be a valid factor, as would
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* "(CONSTANT[RGB])"
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*
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* These can also be used as factors:
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* <itemizedlist>
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* <listitem>0: (0, 0, 0, 0)</listitem>
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* <listitem>1: (1, 1, 1, 1)</listitem>
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* <listitem>SRC_ALPHA_SATURATE_FACTOR: (f,f,f,1) where f = MIN(SRC_COLOR[A],1-DST_COLOR[A])</listitem>
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* </itemizedlist>
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*
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* <note>Remember; all color components are normalized to the range [0, 1]
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* before computing the result of blending.</note>
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*
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* <example id="cogl-Blend-Strings-blend-unpremul">
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* <title>Blend Strings/1</title>
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* <para>Blend a non-premultiplied source over a destination with
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* premultiplied alpha:</para>
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* <programlisting>
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* "RGB = ADD(SRC_COLOR*(SRC_COLOR[A]), DST_COLOR*(1-SRC_COLOR[A]))"
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* "A = ADD(SRC_COLOR, DST_COLOR*(1-SRC_COLOR[A]))"
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* </programlisting>
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* </example>
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*
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* <example id="cogl-Blend-Strings-blend-premul">
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* <title>Blend Strings/2</title>
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* <para>Blend a premultiplied source over a destination with
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* premultiplied alpha</para>
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* <programlisting>
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* "RGBA = ADD(SRC_COLOR, DST_COLOR*(1-SRC_COLOR[A]))"
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* </programlisting>
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* </example>
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*
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* The default blend string is:
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* |[
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* RGBA = ADD (SRC_COLOR, DST_COLOR*(1-SRC_COLOR[A]))
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* ]|
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*
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* That gives normal alpha-blending when the calculated color for the material
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* is in premultiplied form.
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*
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* Return value: %TRUE if the blend string was successfully parsed, and the
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* described blending is supported by the underlying driver/hardware. If
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* there was an error, %FALSE is returned and @error is set accordingly (if
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* present).
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*
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* Since: 1.0
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* Deprecated: 1.16: Use cogl_pipeline_set_blend() instead
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*/
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COGL_DEPRECATED_FOR (cogl_pipeline_set_blend)
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gboolean
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cogl_material_set_blend (CoglMaterial *material,
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const char *blend_string,
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GError **error);
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/**
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* cogl_material_set_blend_constant:
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* @material: A #CoglMaterial object
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* @constant_color: The constant color you want
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*
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* When blending is setup to reference a CONSTANT blend factor then
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* blending will depend on the constant set with this function.
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*
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* Since: 1.0
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* Deprecated: 1.16: Use cogl_pipeline_set_blend_constant() instead
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*/
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COGL_DEPRECATED_FOR (cogl_pipeline_set_blend_constant)
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void
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cogl_material_set_blend_constant (CoglMaterial *material,
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const CoglColor *constant_color);
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/**
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* cogl_material_set_point_size:
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* @material: a material.
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* @point_size: the new point size.
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*
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* Changes the size of points drawn when %COGL_VERTICES_MODE_POINTS is
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* used with the vertex buffer API. Note that typically the GPU will
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* only support a limited minimum and maximum range of point sizes. If
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* the chosen point size is outside that range then the nearest value
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* within that range will be used instead. The size of a point is in
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* screen space so it will be the same regardless of any
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* transformations. The default point size is 1.0.
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*
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* Since: 1.4
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* Deprecated: 1.16: Use cogl_pipeline_set_point_size() instead
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*/
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COGL_DEPRECATED_FOR (cogl_pipeline_set_point_size)
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void
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cogl_material_set_point_size (CoglMaterial *material,
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float point_size);
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/**
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* cogl_material_set_user_program:
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* @material: a #CoglMaterial object.
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* @program: A #CoglHandle to a linked CoglProgram
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*
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* Associates a linked CoglProgram with the given material so that the
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* program can take full control of vertex and/or fragment processing.
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*
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* This is an example of how it can be used to associate an ARBfp
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* program with a #CoglMaterial:
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* |[
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* CoglHandle shader;
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* CoglHandle program;
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* CoglMaterial *material;
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*
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* shader = cogl_create_shader (COGL_SHADER_TYPE_FRAGMENT);
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* cogl_shader_source (shader,
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* "!!ARBfp1.0\n"
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* "MOV result.color,fragment.color;\n"
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* "END\n");
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* cogl_shader_compile (shader);
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*
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* program = cogl_create_program ();
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* cogl_program_attach_shader (program, shader);
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* cogl_program_link (program);
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*
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* material = cogl_material_new ();
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* cogl_material_set_user_program (material, program);
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*
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* cogl_set_source_color4ub (0xff, 0x00, 0x00, 0xff);
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* cogl_rectangle (0, 0, 100, 100);
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* ]|
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*
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* It is possibly worth keeping in mind that this API is not part of
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* the long term design for how we want to expose shaders to Cogl
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* developers (We are planning on deprecating the cogl_program and
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* cogl_shader APIs in favour of a "snippet" framework) but in the
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* meantime we hope this will handle most practical GLSL and ARBfp
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* requirements.
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*
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* Since: 1.4
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* Deprecated: 1.16: Use #CoglSnippet api instead instead
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*/
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COGL_DEPRECATED_FOR (cogl_snippet_)
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void
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cogl_material_set_user_program (CoglMaterial *material,
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CoglHandle program);
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/**
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* cogl_material_set_layer:
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* @material: A #CoglMaterial object
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* @layer_index: the index of the layer
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* @texture: a #CoglHandle for the layer object
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*
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* In addition to the standard OpenGL lighting model a Cogl material may have
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* one or more layers comprised of textures that can be blended together in
|
|
* order, with a number of different texture combine modes. This function
|
|
* defines a new texture layer.
|
|
*
|
|
* The index values of multiple layers do not have to be consecutive; it is
|
|
* only their relative order that is important.
|
|
*
|
|
* <note>In the future, we may define other types of material layers, such
|
|
* as purely GLSL based layers.</note>
|
|
*
|
|
* Since: 1.0
|
|
* Deprecated: 1.16: Use cogl_pipeline_set_layer() instead
|
|
*/
|
|
COGL_DEPRECATED_FOR (cogl_pipeline_set_layer)
|
|
void
|
|
cogl_material_set_layer (CoglMaterial *material,
|
|
int layer_index,
|
|
CoglHandle texture);
|
|
|
|
/**
|
|
* cogl_material_set_layer_combine:
|
|
* @material: A #CoglMaterial object
|
|
* @layer_index: Specifies the layer you want define a combine function for
|
|
* @blend_string: A <link linkend="cogl-Blend-Strings">Cogl blend string</link>
|
|
* describing the desired texture combine function.
|
|
* @error: A #GError that may report parse errors or lack of GPU/driver
|
|
* support. May be %NULL, in which case a warning will be printed out if an
|
|
* error is encountered.
|
|
*
|
|
* If not already familiar; you can refer
|
|
* <link linkend="cogl-Blend-Strings">here</link> for an overview of what blend
|
|
* strings are and there syntax.
|
|
*
|
|
* These are all the functions available for texture combining:
|
|
* <itemizedlist>
|
|
* <listitem>REPLACE(arg0) = arg0</listitem>
|
|
* <listitem>MODULATE(arg0, arg1) = arg0 x arg1</listitem>
|
|
* <listitem>ADD(arg0, arg1) = arg0 + arg1</listitem>
|
|
* <listitem>ADD_SIGNED(arg0, arg1) = arg0 + arg1 - 0.5</listitem>
|
|
* <listitem>INTERPOLATE(arg0, arg1, arg2) = arg0 x arg2 + arg1 x (1 - arg2)</listitem>
|
|
* <listitem>SUBTRACT(arg0, arg1) = arg0 - arg1</listitem>
|
|
* <listitem>
|
|
* <programlisting>
|
|
* DOT3_RGB(arg0, arg1) = 4 x ((arg0[R] - 0.5)) * (arg1[R] - 0.5) +
|
|
* (arg0[G] - 0.5)) * (arg1[G] - 0.5) +
|
|
* (arg0[B] - 0.5)) * (arg1[B] - 0.5))
|
|
* </programlisting>
|
|
* </listitem>
|
|
* <listitem>
|
|
* <programlisting>
|
|
* DOT3_RGBA(arg0, arg1) = 4 x ((arg0[R] - 0.5)) * (arg1[R] - 0.5) +
|
|
* (arg0[G] - 0.5)) * (arg1[G] - 0.5) +
|
|
* (arg0[B] - 0.5)) * (arg1[B] - 0.5))
|
|
* </programlisting>
|
|
* </listitem>
|
|
* </itemizedlist>
|
|
*
|
|
* Refer to the
|
|
* <link linkend="cogl-Blend-String-syntax">color-source syntax</link> for
|
|
* describing the arguments. The valid source names for texture combining
|
|
* are:
|
|
* <variablelist>
|
|
* <varlistentry>
|
|
* <term>TEXTURE</term>
|
|
* <listitem>Use the color from the current texture layer</listitem>
|
|
* </varlistentry>
|
|
* <varlistentry>
|
|
* <term>TEXTURE_0, TEXTURE_1, etc</term>
|
|
* <listitem>Use the color from the specified texture layer</listitem>
|
|
* </varlistentry>
|
|
* <varlistentry>
|
|
* <term>CONSTANT</term>
|
|
* <listitem>Use the color from the constant given with
|
|
* cogl_material_set_layer_constant()</listitem>
|
|
* </varlistentry>
|
|
* <varlistentry>
|
|
* <term>PRIMARY</term>
|
|
* <listitem>Use the color of the material as set with
|
|
* cogl_material_set_color()</listitem>
|
|
* </varlistentry>
|
|
* <varlistentry>
|
|
* <term>PREVIOUS</term>
|
|
* <listitem>Either use the texture color from the previous layer, or
|
|
* if this is layer 0, use the color of the material as set with
|
|
* cogl_material_set_color()</listitem>
|
|
* </varlistentry>
|
|
* </variablelist>
|
|
*
|
|
* <refsect2 id="cogl-Layer-Combine-Examples">
|
|
* <title>Layer Combine Examples</title>
|
|
* <para>This is effectively what the default blending is:</para>
|
|
* <informalexample><programlisting>
|
|
* RGBA = MODULATE (PREVIOUS, TEXTURE)
|
|
* </programlisting></informalexample>
|
|
* <para>This could be used to cross-fade between two images, using
|
|
* the alpha component of a constant as the interpolator. The constant
|
|
* color is given by calling cogl_material_set_layer_constant.</para>
|
|
* <informalexample><programlisting>
|
|
* RGBA = INTERPOLATE (PREVIOUS, TEXTURE, CONSTANT[A])
|
|
* </programlisting></informalexample>
|
|
* </refsect2>
|
|
*
|
|
* <note>You can't give a multiplication factor for arguments as you can
|
|
* with blending.</note>
|
|
*
|
|
* Return value: %TRUE if the blend string was successfully parsed, and the
|
|
* described texture combining is supported by the underlying driver and
|
|
* or hardware. On failure, %FALSE is returned and @error is set
|
|
*
|
|
* Since: 1.0
|
|
* Deprecated: 1.16: Use cogl_pipeline_set_layer_combine() instead
|
|
*/
|
|
COGL_DEPRECATED_FOR (cogl_pipeline_set_layer_combine)
|
|
gboolean
|
|
cogl_material_set_layer_combine (CoglMaterial *material,
|
|
int layer_index,
|
|
const char *blend_string,
|
|
GError **error);
|
|
|
|
/**
|
|
* cogl_material_set_layer_combine_constant:
|
|
* @material: A #CoglMaterial object
|
|
* @layer_index: Specifies the layer you want to specify a constant used
|
|
* for texture combining
|
|
* @constant: The constant color you want
|
|
*
|
|
* When you are using the 'CONSTANT' color source in a layer combine
|
|
* description then you can use this function to define its value.
|
|
*
|
|
* Since: 1.0
|
|
* Deprecated: 1.16: Use cogl_pipeline_set_layer_combine_constant()
|
|
* instead
|
|
*/
|
|
COGL_DEPRECATED_FOR (cogl_pipeline_set_layer_combine_constant)
|
|
void
|
|
cogl_material_set_layer_combine_constant (CoglMaterial *material,
|
|
int layer_index,
|
|
const CoglColor *constant);
|
|
|
|
/**
|
|
* cogl_material_set_layer_matrix:
|
|
* @material: A #CoglMaterial object
|
|
* @layer_index: the index for the layer inside @material
|
|
* @matrix: the transformation matrix for the layer
|
|
*
|
|
* This function lets you set a matrix that can be used to e.g. translate
|
|
* and rotate a single layer of a material used to fill your geometry.
|
|
* Deprecated: 1.16: Use cogl_pipeline_set_layer_matrix() instead
|
|
*/
|
|
COGL_DEPRECATED_FOR (cogl_pipeline_set_layer_matrix)
|
|
void
|
|
cogl_material_set_layer_matrix (CoglMaterial *material,
|
|
int layer_index,
|
|
const CoglMatrix *matrix);
|
|
|
|
/**
|
|
* cogl_material_set_layer_filters:
|
|
* @material: A #CoglMaterial object
|
|
* @layer_index: the layer number to change.
|
|
* @min_filter: the filter used when scaling a texture down.
|
|
* @mag_filter: the filter used when magnifying a texture.
|
|
*
|
|
* Changes the decimation and interpolation filters used when a texture is
|
|
* drawn at other scales than 100%.
|
|
* Deprecated: 1.16: Use cogl_pipeline_set_layer_filters() instead
|
|
*/
|
|
COGL_DEPRECATED_FOR (cogl_pipeline_set_layer_filters)
|
|
void
|
|
cogl_material_set_layer_filters (CoglMaterial *material,
|
|
int layer_index,
|
|
CoglMaterialFilter min_filter,
|
|
CoglMaterialFilter mag_filter);
|
|
|
|
/**
|
|
* cogl_material_set_layer_point_sprite_coords_enabled:
|
|
* @material: a #CoglHandle to a material.
|
|
* @layer_index: the layer number to change.
|
|
* @enable: whether to enable point sprite coord generation.
|
|
* @error: A return location for a GError, or NULL to ignore errors.
|
|
*
|
|
* When rendering points, if @enable is %TRUE then the texture
|
|
* coordinates for this layer will be replaced with coordinates that
|
|
* vary from 0.0 to 1.0 across the primitive. The top left of the
|
|
* point will have the coordinates 0.0,0.0 and the bottom right will
|
|
* have 1.0,1.0. If @enable is %FALSE then the coordinates will be
|
|
* fixed for the entire point.
|
|
*
|
|
* Return value: %TRUE if the function succeeds, %FALSE otherwise.
|
|
* Since: 1.4
|
|
* Deprecated: 1.16: Use cogl_pipeline_set_layer_point_sprite_coords_enabled()
|
|
* instead
|
|
*/
|
|
COGL_DEPRECATED_FOR (cogl_pipeline_set_layer_point_sprite_coords_enabled)
|
|
gboolean
|
|
cogl_material_set_layer_point_sprite_coords_enabled (CoglMaterial *material,
|
|
int layer_index,
|
|
gboolean enable,
|
|
GError **error);
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __COGL_MATERIAL_H__ */
|