mirror of
https://github.com/brl/mutter.git
synced 2024-11-25 17:40:40 -05:00
c4767b6c01
Upstream the annotations used in Gala, make more Cogl methods available since things got moved to a GObject base and thus works natively with the introspection. Add all the public API to the introspection. Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3619>
477 lines
18 KiB
C
477 lines
18 KiB
C
/*
|
|
* Cogl
|
|
*
|
|
* A Low Level GPU Graphics and Utilities API
|
|
*
|
|
* Copyright (C) 2007,2008,2009 Intel Corporation.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person
|
|
* obtaining a copy of this software and associated documentation
|
|
* files (the "Software"), to deal in the Software without
|
|
* restriction, including without limitation the rights to use, copy,
|
|
* modify, merge, publish, distribute, sublicense, and/or sell copies
|
|
* of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be
|
|
* included in all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
|
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
|
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
* SOFTWARE.
|
|
*
|
|
*
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#if !defined(__COGL_H_INSIDE__) && !defined(COGL_COMPILATION)
|
|
#error "Only <cogl/cogl.h> can be included directly."
|
|
#endif
|
|
|
|
#include "cogl/cogl-pipeline.h"
|
|
#include "cogl/cogl-color.h"
|
|
#include "cogl/cogl-texture.h"
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
/**
|
|
* CoglPipelineFilter:
|
|
* @COGL_PIPELINE_FILTER_NEAREST: Measuring in manhatten distance from the,
|
|
* current pixel center, use the nearest texture texel
|
|
* @COGL_PIPELINE_FILTER_LINEAR: Use the weighted average of the 4 texels
|
|
* nearest the current pixel center
|
|
* @COGL_PIPELINE_FILTER_NEAREST_MIPMAP_NEAREST: Select the mimap level whose
|
|
* texel size most closely matches the current pixel, and use the
|
|
* %COGL_PIPELINE_FILTER_NEAREST criterion
|
|
* @COGL_PIPELINE_FILTER_LINEAR_MIPMAP_NEAREST: Select the mimap level whose
|
|
* texel size most closely matches the current pixel, and use the
|
|
* %COGL_PIPELINE_FILTER_LINEAR criterion
|
|
* @COGL_PIPELINE_FILTER_NEAREST_MIPMAP_LINEAR: Select the two mimap levels
|
|
* whose texel size most closely matches the current pixel, use
|
|
* the %COGL_PIPELINE_FILTER_NEAREST criterion on each one and take
|
|
* their weighted average
|
|
* @COGL_PIPELINE_FILTER_LINEAR_MIPMAP_LINEAR: Select the two mimap levels
|
|
* whose texel size most closely matches the current pixel, use
|
|
* the %COGL_PIPELINE_FILTER_LINEAR criterion on each one and take
|
|
* their weighted average
|
|
*
|
|
* Texture filtering is used whenever the current pixel maps either to more
|
|
* than one texture element (texel) or less than one. These filter enums
|
|
* correspond to different strategies used to come up with a pixel color, by
|
|
* possibly referring to multiple neighbouring texels and taking a weighted
|
|
* average or simply using the nearest texel.
|
|
*/
|
|
typedef enum
|
|
{
|
|
COGL_PIPELINE_FILTER_NEAREST = 0x2600,
|
|
COGL_PIPELINE_FILTER_LINEAR = 0x2601,
|
|
COGL_PIPELINE_FILTER_NEAREST_MIPMAP_NEAREST = 0x2700,
|
|
COGL_PIPELINE_FILTER_LINEAR_MIPMAP_NEAREST = 0x2701,
|
|
COGL_PIPELINE_FILTER_NEAREST_MIPMAP_LINEAR = 0x2702,
|
|
COGL_PIPELINE_FILTER_LINEAR_MIPMAP_LINEAR = 0x2703
|
|
} CoglPipelineFilter;
|
|
/* NB: these values come from the equivalents in gl.h */
|
|
|
|
/**
|
|
* CoglPipelineWrapMode:
|
|
* @COGL_PIPELINE_WRAP_MODE_REPEAT: The texture will be repeated. This
|
|
* is useful for example to draw a tiled background.
|
|
* @COGL_PIPELINE_WRAP_MODE_CLAMP_TO_EDGE: The coordinates outside the
|
|
* range 0→1 will sample copies of the edge pixels of the
|
|
* texture. This is useful to avoid artifacts if only one copy of
|
|
* the texture is being rendered.
|
|
* @COGL_PIPELINE_WRAP_MODE_AUTOMATIC: Cogl will try to automatically
|
|
* decide which of the above two to use. For cogl_rectangle(), it
|
|
* will use repeat mode if any of the texture coordinates are
|
|
* outside the range 0→1, otherwise it will use clamp to edge. For
|
|
* cogl_polygon() it will always use repeat mode. For
|
|
* cogl_vertex_buffer_draw() it will use repeat mode except for
|
|
* layers that have point sprite coordinate generation enabled. This
|
|
* is the default value.
|
|
*
|
|
* The wrap mode specifies what happens when texture coordinates
|
|
* outside the range 0→1 are used. Note that if the filter mode is
|
|
* anything but %COGL_PIPELINE_FILTER_NEAREST then texels outside the
|
|
* range 0→1 might be used even when the coordinate is exactly 0 or 1
|
|
* because OpenGL will try to sample neighbouring pixels. For example
|
|
* if you are trying to render the full texture then you may get
|
|
* artifacts around the edges when the pixels from the other side are
|
|
* merged in if the wrap mode is set to repeat.
|
|
*/
|
|
/* GL_ALWAYS is just used here as a value that is known not to clash
|
|
* with any valid GL wrap modes
|
|
*
|
|
* XXX: keep the values in sync with the CoglPipelineWrapModeInternal
|
|
* enum so no conversion is actually needed.
|
|
*/
|
|
typedef enum
|
|
{
|
|
COGL_PIPELINE_WRAP_MODE_REPEAT = 0x2901,
|
|
COGL_PIPELINE_WRAP_MODE_MIRRORED_REPEAT = 0x8370,
|
|
COGL_PIPELINE_WRAP_MODE_CLAMP_TO_EDGE = 0x812F,
|
|
COGL_PIPELINE_WRAP_MODE_AUTOMATIC = 0x0207 /* GL_ALWAYS */
|
|
} CoglPipelineWrapMode;
|
|
/* NB: these values come from the equivalents in gl.h */
|
|
|
|
/**
|
|
* cogl_pipeline_set_layer:
|
|
* @pipeline: A #CoglPipeline object
|
|
* @layer_index: the index of the layer
|
|
* @texture: a #CoglTexture for the layer object
|
|
*
|
|
* In addition to the standard OpenGL lighting model a Cogl pipeline may have
|
|
* 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.
|
|
*
|
|
* The @texture parameter can also be %NULL in which case the pipeline
|
|
* will use a default white texture. The type of the default texture
|
|
* will be the same as whatever texture was last used for the pipeline
|
|
* or %COGL_TEXTURE_TYPE_2D if none has been specified yet. To
|
|
* explicitly specify the type of default texture required, use
|
|
* cogl_pipeline_set_layer_null_texture() instead.
|
|
*
|
|
* In the future, we may define other types of pipeline layers, such
|
|
* as purely GLSL based layers.
|
|
*/
|
|
COGL_EXPORT void
|
|
cogl_pipeline_set_layer_texture (CoglPipeline *pipeline,
|
|
int layer_index,
|
|
CoglTexture *texture);
|
|
|
|
/**
|
|
* cogl_pipeline_set_layer_null_texture:
|
|
* @pipeline: A #CoglPipeline
|
|
* @layer_index: The layer number to modify
|
|
*
|
|
* Sets the texture for this layer to be the default texture for the
|
|
* given type. The default texture is a 1x1 pixel white texture.
|
|
*
|
|
* This function is mostly useful if you want to create a base
|
|
* pipeline that you want to create multiple copies from using
|
|
* cogl_pipeline_copy(). In that case this function can be used to
|
|
* specify the texture type so that any pipeline copies can share the
|
|
* internal texture type state for efficiency.
|
|
*/
|
|
COGL_EXPORT void
|
|
cogl_pipeline_set_layer_null_texture (CoglPipeline *pipeline,
|
|
int layer_index);
|
|
|
|
/**
|
|
* cogl_pipeline_get_layer_texture:
|
|
* @pipeline: A #CoglPipeline object
|
|
* @layer_index: the index of the layer
|
|
*
|
|
* Return value: (transfer none): the texture that was set for the
|
|
* given layer of the pipeline or %NULL if no texture was set.
|
|
*/
|
|
COGL_EXPORT CoglTexture *
|
|
cogl_pipeline_get_layer_texture (CoglPipeline *pipeline,
|
|
int layer_index);
|
|
|
|
/**
|
|
* cogl_pipeline_remove_layer:
|
|
* @pipeline: A #CoglPipeline object
|
|
* @layer_index: Specifies the layer you want to remove
|
|
*
|
|
* This function removes a layer from your pipeline
|
|
*/
|
|
COGL_EXPORT void
|
|
cogl_pipeline_remove_layer (CoglPipeline *pipeline,
|
|
int layer_index);
|
|
|
|
/**
|
|
* cogl_pipeline_set_layer_combine:
|
|
* @pipeline: A #CoglPipeline object
|
|
* @layer_index: Specifies the layer you want define a combine function for
|
|
* @blend_string: A Cogl blend string 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.
|
|
*
|
|
*
|
|
* These are all the functions available for texture combining:
|
|
*
|
|
* - `REPLACE(arg0) = arg0`
|
|
* - `MODULATE(arg0, arg1) = arg0 x arg1`
|
|
* - `ADD(arg0, arg1) = arg0 + arg1`
|
|
* - `ADD_SIGNED(arg0, arg1) = arg0 + arg1 - 0.5`
|
|
* - `INTERPOLATE(arg0, arg1, arg2) = arg0 x arg2 + arg1 x (1 - arg2)`
|
|
* - `SUBTRACT(arg0, arg1) = arg0 - arg1`
|
|
* -
|
|
* ```
|
|
* 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))
|
|
* ```
|
|
* -
|
|
* ```
|
|
* 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))
|
|
* ```
|
|
*
|
|
* The valid source names for texture combining are:
|
|
*
|
|
* - `TEXTURE`: Use the color from the current texture layer
|
|
* - `TEXTURE_0, TEXTURE_1, etc`: Use the color from the specified texture layer
|
|
* - `CONSTANT`: Use the color from the constant given with
|
|
* [method@Cogl.Pipeline.set_layer_combine_constant]
|
|
* - `PRIMARY`: Use the color of the pipeline as set with
|
|
* [method@Cogl.Pipeline.set_color]
|
|
* - `PREVIOUS`: Either use the texture color from the previous layer, or
|
|
* if this is layer 0, use the color of the pipeline as set with
|
|
* [method@Cogl.Pipeline.set_color]
|
|
*
|
|
* Layer Combine Examples:
|
|
*
|
|
* This is effectively what the default blending is:
|
|
*
|
|
* ```
|
|
* RGBA = MODULATE (PREVIOUS, TEXTURE)
|
|
* ```
|
|
*
|
|
* 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 [method@Cogl.Pipeline.set_layer_combine_constant].
|
|
*
|
|
* ```
|
|
* RGBA = INTERPOLATE (PREVIOUS, TEXTURE, CONSTANT[A])
|
|
* ```
|
|
*
|
|
* You can't give a multiplication factor for arguments as you can
|
|
* with blending.
|
|
*
|
|
* 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
|
|
*/
|
|
COGL_EXPORT gboolean
|
|
cogl_pipeline_set_layer_combine (CoglPipeline *pipeline,
|
|
int layer_index,
|
|
const char *blend_string,
|
|
GError **error);
|
|
|
|
/**
|
|
* cogl_pipeline_set_layer_combine_constant:
|
|
* @pipeline: A #CoglPipeline 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.
|
|
*/
|
|
COGL_EXPORT void
|
|
cogl_pipeline_set_layer_combine_constant (CoglPipeline *pipeline,
|
|
int layer_index,
|
|
const CoglColor *constant);
|
|
|
|
/**
|
|
* cogl_pipeline_set_layer_matrix:
|
|
* @pipeline: A #CoglPipeline object
|
|
* @layer_index: the index for the layer inside @pipeline
|
|
* @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 pipeline used to fill your geometry.
|
|
*/
|
|
COGL_EXPORT void
|
|
cogl_pipeline_set_layer_matrix (CoglPipeline *pipeline,
|
|
int layer_index,
|
|
const graphene_matrix_t *matrix);
|
|
|
|
/**
|
|
* cogl_pipeline_get_n_layers:
|
|
* @pipeline: A #CoglPipeline object
|
|
*
|
|
* Retrieves the number of layers defined for the given @pipeline
|
|
*
|
|
* Return value: the number of layers
|
|
*/
|
|
COGL_EXPORT int
|
|
cogl_pipeline_get_n_layers (CoglPipeline *pipeline);
|
|
|
|
/**
|
|
* cogl_pipeline_get_layer_filters:
|
|
* @pipeline: A #CoglPipeline object
|
|
* @layer_index: the layer number to change.
|
|
* @min_filter: (out): Return location for the filter used when scaling
|
|
* a texture down.
|
|
* @mag_filter: (out): Return location for the filter used when magnifying
|
|
* a texture.
|
|
*
|
|
* Returns the decimation and interpolation filters used when a texture is
|
|
* drawn at other scales than 100%.
|
|
*/
|
|
COGL_EXPORT void
|
|
cogl_pipeline_get_layer_filters (CoglPipeline *pipeline,
|
|
int layer_index,
|
|
CoglPipelineFilter *min_filter,
|
|
CoglPipelineFilter *mag_filter);
|
|
|
|
/**
|
|
* cogl_pipeline_set_layer_filters:
|
|
* @pipeline: A #CoglPipeline 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%.
|
|
*
|
|
* It is an error to pass anything other than
|
|
* %COGL_PIPELINE_FILTER_NEAREST or %COGL_PIPELINE_FILTER_LINEAR as
|
|
* magnification filters since magnification doesn't ever need to
|
|
* reference values stored in the mipmap chain.
|
|
*/
|
|
COGL_EXPORT void
|
|
cogl_pipeline_set_layer_filters (CoglPipeline *pipeline,
|
|
int layer_index,
|
|
CoglPipelineFilter min_filter,
|
|
CoglPipelineFilter mag_filter);
|
|
|
|
/**
|
|
* cogl_pipeline_set_layer_point_sprite_coords_enabled:
|
|
* @pipeline: A #CoglPipeline object
|
|
* @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.
|
|
*/
|
|
COGL_EXPORT gboolean
|
|
cogl_pipeline_set_layer_point_sprite_coords_enabled (CoglPipeline *pipeline,
|
|
int layer_index,
|
|
gboolean enable,
|
|
GError **error);
|
|
|
|
/**
|
|
* cogl_pipeline_get_layer_point_sprite_coords_enabled:
|
|
* @pipeline: A #CoglPipeline object
|
|
* @layer_index: the layer number to check.
|
|
*
|
|
* Gets whether point sprite coordinate generation is enabled for this
|
|
* texture layer.
|
|
*
|
|
* Return value: whether the texture coordinates will be replaced with
|
|
* point sprite coordinates.
|
|
*/
|
|
COGL_EXPORT gboolean
|
|
cogl_pipeline_get_layer_point_sprite_coords_enabled (CoglPipeline *pipeline,
|
|
int layer_index);
|
|
|
|
/**
|
|
* cogl_pipeline_get_layer_wrap_mode_s:
|
|
* @pipeline: A #CoglPipeline object
|
|
* @layer_index: the layer number to change.
|
|
*
|
|
* Returns the wrap mode for the 's' coordinate of texture lookups on this
|
|
* layer.
|
|
*
|
|
* Return value: the wrap mode for the 's' coordinate of texture lookups on
|
|
* this layer.
|
|
*/
|
|
COGL_EXPORT CoglPipelineWrapMode
|
|
cogl_pipeline_get_layer_wrap_mode_s (CoglPipeline *pipeline,
|
|
int layer_index);
|
|
|
|
/**
|
|
* cogl_pipeline_set_layer_wrap_mode_s:
|
|
* @pipeline: A #CoglPipeline object
|
|
* @layer_index: the layer number to change.
|
|
* @mode: the new wrap mode
|
|
*
|
|
* Sets the wrap mode for the 's' coordinate of texture lookups on this layer.
|
|
*/
|
|
COGL_EXPORT void
|
|
cogl_pipeline_set_layer_wrap_mode_s (CoglPipeline *pipeline,
|
|
int layer_index,
|
|
CoglPipelineWrapMode mode);
|
|
|
|
/**
|
|
* cogl_pipeline_get_layer_wrap_mode_t:
|
|
* @pipeline: A #CoglPipeline object
|
|
* @layer_index: the layer number to change.
|
|
*
|
|
* Returns the wrap mode for the 't' coordinate of texture lookups on this
|
|
* layer.
|
|
*
|
|
* Return value: the wrap mode for the 't' coordinate of texture lookups on
|
|
* this layer.
|
|
*/
|
|
COGL_EXPORT CoglPipelineWrapMode
|
|
cogl_pipeline_get_layer_wrap_mode_t (CoglPipeline *pipeline,
|
|
int layer_index);
|
|
|
|
|
|
/**
|
|
* cogl_pipeline_set_layer_wrap_mode_t:
|
|
* @pipeline: A #CoglPipeline object
|
|
* @layer_index: the layer number to change.
|
|
* @mode: the new wrap mode
|
|
*
|
|
* Sets the wrap mode for the 't' coordinate of texture lookups on this layer.
|
|
*/
|
|
COGL_EXPORT void
|
|
cogl_pipeline_set_layer_wrap_mode_t (CoglPipeline *pipeline,
|
|
int layer_index,
|
|
CoglPipelineWrapMode mode);
|
|
|
|
/**
|
|
* cogl_pipeline_set_layer_wrap_mode:
|
|
* @pipeline: A #CoglPipeline object
|
|
* @layer_index: the layer number to change.
|
|
* @mode: the new wrap mode
|
|
*
|
|
* Sets the wrap mode for all three coordinates of texture lookups on
|
|
* this layer. This is equivalent to calling
|
|
* cogl_pipeline_set_layer_wrap_mode_s() and
|
|
* cogl_pipeline_set_layer_wrap_mode_t() separately.
|
|
*/
|
|
COGL_EXPORT void
|
|
cogl_pipeline_set_layer_wrap_mode (CoglPipeline *pipeline,
|
|
int layer_index,
|
|
CoglPipelineWrapMode mode);
|
|
|
|
/**
|
|
* cogl_pipeline_add_layer_snippet:
|
|
* @pipeline: A #CoglPipeline
|
|
* @layer: The layer to hook the snippet to
|
|
* @snippet: A #CoglSnippet
|
|
*
|
|
* Adds a shader snippet that will hook on to the given layer of the
|
|
* pipeline. The exact part of the pipeline that the snippet wraps
|
|
* around depends on the hook that is given to
|
|
* cogl_snippet_new(). Note that some hooks can't be used with a layer
|
|
* and need to be added with cogl_pipeline_add_snippet() instead.
|
|
*/
|
|
COGL_EXPORT void
|
|
cogl_pipeline_add_layer_snippet (CoglPipeline *pipeline,
|
|
int layer,
|
|
CoglSnippet *snippet);
|
|
|
|
COGL_EXPORT void
|
|
cogl_pipeline_set_layer_max_mipmap_level (CoglPipeline *pipeline,
|
|
int layer,
|
|
int max_level);
|
|
|
|
G_END_DECLS
|