mirror of
https://github.com/brl/mutter.git
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4553ca0695
This adds the following new public experimental functions to set
uniform values on a CoglPipeline:
void
cogl_pipeline_set_uniform_1f (CoglPipeline *pipeline,
int uniform_location,
float value);
void
cogl_pipeline_set_uniform_1i (CoglPipeline *pipeline,
int uniform_location,
int value);
void
cogl_pipeline_set_uniform_float (CoglPipeline *pipeline,
int uniform_location,
int n_components,
int count,
const float *value);
void
cogl_pipeline_set_uniform_int (CoglPipeline *pipeline,
int uniform_location,
int n_components,
int count,
const int *value);
void
cogl_pipeline_set_uniform_matrix (CoglPipeline *pipeline,
int uniform_location,
int dimensions,
int count,
gboolean transpose,
const float *value);
These are similar to the old functions used to set uniforms on a
CoglProgram. To get a value to pass in as the uniform_location there
is also:
int
cogl_pipeline_get_uniform_location (CoglPipeline *pipeline,
const char *uniform_name);
Conceptually the uniform locations are tied to the pipeline so that
whenever setting a value for a new pipeline the application is
expected to call this function. However in practice the uniform
locations are global to the CoglContext. The names are stored in a
linked list where the position in the list is the uniform location.
The global indices are used so that each pipeline can store a mask of
which uniforms it overrides. That way it is quicker to detect which
uniforms are different from the last pipeline that used the same
CoglProgramState so it can avoid flushing uniforms that haven't
changed. Currently the values are not actually compared which means
that it will only avoid flushing a uniform if there is a common
ancestor that sets the value (or if the same pipeline is being flushed
again - in which case the pipeline and its common ancestor are the
same thing).
The uniform values are stored in the big state of the pipeline as a
sparse linked list. A bitmask stores which values have been overridden
and only overridden values are stored in the linked list.
Reviewed-by: Robert Bragg <robert@linux.intel.com>
945 lines
31 KiB
C
945 lines
31 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) 2007,2008,2009,2011 Intel Corporation.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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*
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*/
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#if !defined(__COGL_H_INSIDE__) && !defined(CLUTTER_COMPILATION)
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#error "Only <cogl/cogl.h> can be included directly."
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#endif
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#ifndef __COGL_PIPELINE_STATE_H__
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#define __COGL_PIPELINE_STATE_H__
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#include <cogl/cogl-pipeline.h>
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#include <cogl/cogl-color.h>
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#include <glib.h>
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G_BEGIN_DECLS
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#ifdef COGL_ENABLE_EXPERIMENTAL_API
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#define cogl_pipeline_set_color cogl_pipeline_set_color_EXP
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/**
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* cogl_pipeline_set_color:
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* @pipeline: A #CoglPipeline 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 pipeline, 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 pipeline 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: 2.0
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* Stability: Unstable
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*/
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void
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cogl_pipeline_set_color (CoglPipeline *pipeline,
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const CoglColor *color);
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#define cogl_pipeline_set_color4ub cogl_pipeline_set_color4ub_EXP
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/**
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* cogl_pipeline_set_color4ub:
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* @pipeline: A #CoglPipeline 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 pipeline, 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: 2.0
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* Stability: Unstable
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*/
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void
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cogl_pipeline_set_color4ub (CoglPipeline *pipeline,
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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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#define cogl_pipeline_set_color4f cogl_pipeline_set_color4f_EXP
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/**
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* cogl_pipeline_set_color4f:
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* @pipeline: A #CoglPipeline 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 pipeline, used when no lighting is enabled.
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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: 2.0
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* Stability: Unstable
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*/
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void
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cogl_pipeline_set_color4f (CoglPipeline *pipeline,
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float red,
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float green,
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float blue,
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float alpha);
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#define cogl_pipeline_get_color cogl_pipeline_get_color_EXP
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/**
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* cogl_pipeline_get_color:
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* @pipeline: A #CoglPipeline object
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* @color: (out): The location to store the color
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*
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* Retrieves the current pipeline color.
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*
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* Since: 2.0
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* Stability: Unstable
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*/
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void
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cogl_pipeline_get_color (CoglPipeline *pipeline,
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CoglColor *color);
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#define cogl_pipeline_set_ambient cogl_pipeline_set_ambient_EXP
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/**
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* cogl_pipeline_set_ambient:
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* @pipeline: A #CoglPipeline object
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* @ambient: The components of the desired ambient color
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*
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* Sets the pipeline's ambient color, in the standard OpenGL lighting
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* model. The ambient color affects the overall color of the object.
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*
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* Since the diffuse color will be intense when the light hits the surface
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* directly, the ambient will be most apparent where the light hits at a
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* slant.
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*
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* The default value is (0.2, 0.2, 0.2, 1.0)
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*
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* Since: 2.0
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* Stability: Unstable
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*/
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void
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cogl_pipeline_set_ambient (CoglPipeline *pipeline,
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const CoglColor *ambient);
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#define cogl_pipeline_get_ambient cogl_pipeline_get_ambient_EXP
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/**
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* cogl_pipeline_get_ambient:
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* @pipeline: A #CoglPipeline object
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* @ambient: The location to store the ambient color
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*
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* Retrieves the current ambient color for @pipeline
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*
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* Since: 2.0
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* Stability: Unstable
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*/
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void
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cogl_pipeline_get_ambient (CoglPipeline *pipeline,
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CoglColor *ambient);
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#define cogl_pipeline_set_diffuse cogl_pipeline_set_diffuse_EXP
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/**
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* cogl_pipeline_set_diffuse:
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* @pipeline: A #CoglPipeline object
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* @diffuse: The components of the desired diffuse color
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*
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* Sets the pipeline's diffuse color, in the standard OpenGL lighting
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* model. The diffuse color is most intense where the light hits the
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* surface directly - perpendicular to the surface.
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*
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* The default value is (0.8, 0.8, 0.8, 1.0)
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*
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* Since: 2.0
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* Stability: Unstable
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*/
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void
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cogl_pipeline_set_diffuse (CoglPipeline *pipeline,
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const CoglColor *diffuse);
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#define cogl_pipeline_get_diffuse cogl_pipeline_get_diffuse_EXP
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/**
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* cogl_pipeline_get_diffuse:
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* @pipeline: A #CoglPipeline object
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* @diffuse: The location to store the diffuse color
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*
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* Retrieves the current diffuse color for @pipeline
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*
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* Since: 2.0
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* Stability: Unstable
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*/
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void
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cogl_pipeline_get_diffuse (CoglPipeline *pipeline,
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CoglColor *diffuse);
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#define cogl_pipeline_set_ambient_and_diffuse \
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cogl_pipeline_set_ambient_and_diffuse_EXP
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/**
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* cogl_pipeline_set_ambient_and_diffuse:
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* @pipeline: A #CoglPipeline object
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* @color: The components of the desired ambient and diffuse colors
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*
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* Conveniently sets the diffuse and ambient color of @pipeline at the same
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* time. See cogl_pipeline_set_ambient() and cogl_pipeline_set_diffuse().
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*
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* The default ambient color is (0.2, 0.2, 0.2, 1.0)
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*
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* The default diffuse color is (0.8, 0.8, 0.8, 1.0)
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*
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* Since: 2.0
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* Stability: Unstable
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*/
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void
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cogl_pipeline_set_ambient_and_diffuse (CoglPipeline *pipeline,
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const CoglColor *color);
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#define cogl_pipeline_set_specular cogl_pipeline_set_specular_EXP
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/**
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* cogl_pipeline_set_specular:
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* @pipeline: A #CoglPipeline object
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* @specular: The components of the desired specular color
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*
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* Sets the pipeline's specular color, in the standard OpenGL lighting
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* model. The intensity of the specular color depends on the viewport
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* position, and is brightest along the lines of reflection.
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*
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* The default value is (0.0, 0.0, 0.0, 1.0)
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*
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* Since: 2.0
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* Stability: Unstable
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*/
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void
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cogl_pipeline_set_specular (CoglPipeline *pipeline,
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const CoglColor *specular);
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#define cogl_pipeline_get_specular cogl_pipeline_get_specular_EXP
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/**
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* cogl_pipeline_get_specular:
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* @pipeline: A #CoglPipeline object
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* @specular: The location to store the specular color
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*
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* Retrieves the pipelines current specular color.
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*
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* Since: 2.0
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* Stability: Unstable
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*/
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void
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cogl_pipeline_get_specular (CoglPipeline *pipeline,
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CoglColor *specular);
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#define cogl_pipeline_set_shininess cogl_pipeline_set_shininess_EXP
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/**
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* cogl_pipeline_set_shininess:
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* @pipeline: A #CoglPipeline object
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* @shininess: The desired shininess; must be >= 0.0
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*
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* Sets the shininess of the pipeline, in the standard OpenGL lighting
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* model, which determines the size of the specular highlights. A
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* higher @shininess will produce smaller highlights which makes the
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* object appear more shiny.
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*
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* The default value is 0.0
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*
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* Since: 2.0
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* Stability: Unstable
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*/
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void
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cogl_pipeline_set_shininess (CoglPipeline *pipeline,
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float shininess);
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#define cogl_pipeline_get_shininess cogl_pipeline_get_shininess_EXP
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/**
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* cogl_pipeline_get_shininess:
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* @pipeline: A #CoglPipeline object
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*
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* Retrieves the pipelines current emission color.
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*
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* Return value: The pipelines current shininess value
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*
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* Since: 2.0
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* Stability: Unstable
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*/
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float
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cogl_pipeline_get_shininess (CoglPipeline *pipeline);
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#define cogl_pipeline_set_emission cogl_pipeline_set_emission_EXP
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/**
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* cogl_pipeline_set_emission:
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* @pipeline: A #CoglPipeline object
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* @emission: The components of the desired emissive color
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*
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* Sets the pipeline's emissive color, in the standard OpenGL lighting
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* model. It will look like the surface is a light source emitting this
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* color.
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*
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* The default value is (0.0, 0.0, 0.0, 1.0)
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*
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* Since: 2.0
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* Stability: Unstable
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*/
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void
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cogl_pipeline_set_emission (CoglPipeline *pipeline,
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const CoglColor *emission);
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#define cogl_pipeline_get_emission cogl_pipeline_get_emission_EXP
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/**
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* cogl_pipeline_get_emission:
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* @pipeline: A #CoglPipeline object
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* @emission: The location to store the emission color
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*
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* Retrieves the pipelines current emission color.
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*
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* Since: 2.0
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* Stability: Unstable
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*/
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void
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cogl_pipeline_get_emission (CoglPipeline *pipeline,
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CoglColor *emission);
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/**
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* CoglPipelineAlphaFunc:
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* @COGL_PIPELINE_ALPHA_FUNC_NEVER: Never let the fragment through.
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* @COGL_PIPELINE_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_PIPELINE_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_PIPELINE_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_PIPELINE_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_PIPELINE_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_PIPELINE_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_PIPELINE_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 #CoglPipelineAlphaFunc
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* determines how the comparison is done.
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*/
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typedef enum {
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COGL_PIPELINE_ALPHA_FUNC_NEVER = 0x0200,
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COGL_PIPELINE_ALPHA_FUNC_LESS = 0x0201,
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COGL_PIPELINE_ALPHA_FUNC_EQUAL = 0x0202,
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COGL_PIPELINE_ALPHA_FUNC_LEQUAL = 0x0203,
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COGL_PIPELINE_ALPHA_FUNC_GREATER = 0x0204,
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COGL_PIPELINE_ALPHA_FUNC_NOTEQUAL = 0x0205,
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COGL_PIPELINE_ALPHA_FUNC_GEQUAL = 0x0206,
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COGL_PIPELINE_ALPHA_FUNC_ALWAYS = 0x0207
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} CoglPipelineAlphaFunc;
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/* NB: these values come from the equivalents in gl.h */
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#define cogl_pipeline_set_alpha_test_function \
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cogl_pipeline_set_alpha_test_function_EXP
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/**
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* cogl_pipeline_set_alpha_test_function:
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* @pipeline: A #CoglPipeline object
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* @alpha_func: A @CoglPipelineAlphaFunc 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_PIPELINE_ALPHA_FUNC_ALWAYS
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*
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* Since: 2.0
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* Stability: Unstable
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*/
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void
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cogl_pipeline_set_alpha_test_function (CoglPipeline *pipeline,
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CoglPipelineAlphaFunc alpha_func,
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float alpha_reference);
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#define cogl_pipeline_get_alpha_test_function \
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cogl_pipeline_get_alpha_test_function_EXP
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/**
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* cogl_pipeline_get_alpha_test_function:
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* @pipeline: A #CoglPipeline object
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*
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* Return value: The alpha test function of @pipeline.
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*
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* Since: 2.0
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* Stability: Unstable
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*/
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CoglPipelineAlphaFunc
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cogl_pipeline_get_alpha_test_function (CoglPipeline *pipeline);
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#define cogl_pipeline_get_alpha_test_reference \
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cogl_pipeline_get_alpha_test_reference_EXP
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/**
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* cogl_pipeline_get_alpha_test_reference:
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* @pipeline: A #CoglPipeline object
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*
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* Return value: The alpha test reference value of @pipeline.
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*
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* Since: 2.0
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* Stability: Unstable
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*/
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float
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cogl_pipeline_get_alpha_test_reference (CoglPipeline *pipeline);
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#define cogl_pipeline_set_blend cogl_pipeline_set_blend_EXP
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/**
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* cogl_pipeline_set_blend:
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* @pipeline: A #CoglPipeline 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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* 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_pipeline_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>
|
|
* <listitem>1: (1, 1, 1, 1)</listitem>
|
|
* <listitem>SRC_ALPHA_SATURATE_FACTOR: (f,f,f,1) where f = MIN(SRC_COLOR[A],1-DST_COLOR[A])</listitem>
|
|
* </itemizedlist>
|
|
*
|
|
* <note>Remember; all color components are normalized to the range [0, 1]
|
|
* before computing the result of blending.</note>
|
|
*
|
|
* <example id="cogl-Blend-Strings-blend-unpremul">
|
|
* <title>Blend Strings/1</title>
|
|
* <para>Blend a non-premultiplied source over a destination with
|
|
* premultiplied alpha:</para>
|
|
* <programlisting>
|
|
* "RGB = ADD(SRC_COLOR*(SRC_COLOR[A]), DST_COLOR*(1-SRC_COLOR[A]))"
|
|
* "A = ADD(SRC_COLOR, DST_COLOR*(1-SRC_COLOR[A]))"
|
|
* </programlisting>
|
|
* </example>
|
|
*
|
|
* <example id="cogl-Blend-Strings-blend-premul">
|
|
* <title>Blend Strings/2</title>
|
|
* <para>Blend a premultiplied source over a destination with
|
|
* premultiplied alpha</para>
|
|
* <programlisting>
|
|
* "RGBA = ADD(SRC_COLOR, DST_COLOR*(1-SRC_COLOR[A]))"
|
|
* </programlisting>
|
|
* </example>
|
|
*
|
|
* The default blend string is:
|
|
* |[
|
|
* RGBA = ADD (SRC_COLOR, DST_COLOR*(1-SRC_COLOR[A]))
|
|
* ]|
|
|
*
|
|
* That gives normal alpha-blending when the calculated color for the pipeline
|
|
* is in premultiplied form.
|
|
*
|
|
* Return value: %TRUE if the blend string was successfully parsed, and the
|
|
* described blending is supported by the underlying driver/hardware. If
|
|
* there was an error, %FALSE is returned and @error is set accordingly (if
|
|
* present).
|
|
*
|
|
* Since: 2.0
|
|
* Stability: Unstable
|
|
*/
|
|
gboolean
|
|
cogl_pipeline_set_blend (CoglPipeline *pipeline,
|
|
const char *blend_string,
|
|
GError **error);
|
|
|
|
#define cogl_pipeline_set_blend_constant cogl_pipeline_set_blend_constant_EXP
|
|
/**
|
|
* cogl_pipeline_set_blend_constant:
|
|
* @pipeline: A #CoglPipeline object
|
|
* @constant_color: The constant color you want
|
|
*
|
|
* When blending is setup to reference a CONSTANT blend factor then
|
|
* blending will depend on the constant set with this function.
|
|
*
|
|
* Since: 2.0
|
|
* Stability: Unstable
|
|
*/
|
|
void
|
|
cogl_pipeline_set_blend_constant (CoglPipeline *pipeline,
|
|
const CoglColor *constant_color);
|
|
|
|
#define cogl_pipeline_set_point_size cogl_pipeline_set_point_size_EXP
|
|
/**
|
|
* cogl_pipeline_set_point_size:
|
|
* @pipeline: a #CoglPipeline pointer
|
|
* @point_size: the new point size.
|
|
*
|
|
* Changes the size of points drawn when %COGL_VERTICES_MODE_POINTS is
|
|
* used with the vertex buffer API. Note that typically the GPU will
|
|
* only support a limited minimum and maximum range of point sizes. If
|
|
* the chosen point size is outside that range then the nearest value
|
|
* within that range will be used instead. The size of a point is in
|
|
* screen space so it will be the same regardless of any
|
|
* transformations. The default point size is 1.0.
|
|
*
|
|
* Since: 2.0
|
|
* Stability: Unstable
|
|
*/
|
|
void
|
|
cogl_pipeline_set_point_size (CoglPipeline *pipeline,
|
|
float point_size);
|
|
|
|
#define cogl_pipeline_get_point_size cogl_pipeline_get_point_size_EXP
|
|
/**
|
|
* cogl_pipeline_get_point_size:
|
|
* @pipeline: a #CoglPipeline pointer
|
|
*
|
|
* Get the size of points drawn when %COGL_VERTICES_MODE_POINTS is
|
|
* used with the vertex buffer API.
|
|
*
|
|
* Return value: the point size of the @pipeline.
|
|
*
|
|
* Since: 2.0
|
|
* Stability: Unstable
|
|
*/
|
|
float
|
|
cogl_pipeline_get_point_size (CoglPipeline *pipeline);
|
|
|
|
#define cogl_pipeline_get_color_mask cogl_pipeline_get_color_mask_EXP
|
|
/**
|
|
* cogl_pipeline_get_color_mask:
|
|
* @pipeline: a #CoglPipeline object.
|
|
*
|
|
* Gets the current #CoglColorMask of which channels would be written to the
|
|
* current framebuffer. Each bit set in the mask means that the
|
|
* corresponding color would be written.
|
|
*
|
|
* Returns: A #CoglColorMask
|
|
* Since: 1.8
|
|
* Stability: unstable
|
|
*/
|
|
CoglColorMask
|
|
cogl_pipeline_get_color_mask (CoglPipeline *pipeline);
|
|
|
|
#define cogl_pipeline_set_color_mask cogl_pipeline_set_color_mask_EXP
|
|
/**
|
|
* cogl_pipeline_set_color_mask:
|
|
* @pipeline: a #CoglPipeline object.
|
|
* @color_mask: A #CoglColorMask of which color channels to write to
|
|
* the current framebuffer.
|
|
*
|
|
* Defines a bit mask of which color channels should be written to the
|
|
* current framebuffer. If a bit is set in @color_mask that means that
|
|
* color will be written.
|
|
*
|
|
* Since: 1.8
|
|
* Stability: unstable
|
|
*/
|
|
void
|
|
cogl_pipeline_set_color_mask (CoglPipeline *pipeline,
|
|
CoglColorMask color_mask);
|
|
|
|
#define cogl_pipeline_get_user_program cogl_pipeline_get_user_program_EXP
|
|
/**
|
|
* cogl_pipeline_get_user_program:
|
|
* @pipeline: a #CoglPipeline object.
|
|
*
|
|
* Queries what user program has been associated with the given
|
|
* @pipeline using cogl_pipeline_set_user_program().
|
|
*
|
|
* Return value: The current user program or %COGL_INVALID_HANDLE.
|
|
*
|
|
* Since: 2.0
|
|
* Stability: Unstable
|
|
*/
|
|
CoglHandle
|
|
cogl_pipeline_get_user_program (CoglPipeline *pipeline);
|
|
|
|
#define cogl_pipeline_set_user_program cogl_pipeline_set_user_program_EXP
|
|
/**
|
|
* cogl_pipeline_set_user_program:
|
|
* @pipeline: a #CoglPipeline object.
|
|
* @program: A #CoglHandle to a linked CoglProgram
|
|
*
|
|
* Associates a linked CoglProgram with the given pipeline so that the
|
|
* program can take full control of vertex and/or fragment processing.
|
|
*
|
|
* This is an example of how it can be used to associate an ARBfp
|
|
* program with a #CoglPipeline:
|
|
* |[
|
|
* CoglHandle shader;
|
|
* CoglHandle program;
|
|
* CoglPipeline *pipeline;
|
|
*
|
|
* shader = cogl_create_shader (COGL_SHADER_TYPE_FRAGMENT);
|
|
* cogl_shader_source (shader,
|
|
* "!!ARBfp1.0\n"
|
|
* "MOV result.color,fragment.color;\n"
|
|
* "END\n");
|
|
* cogl_shader_compile (shader);
|
|
*
|
|
* program = cogl_create_program ();
|
|
* cogl_program_attach_shader (program, shader);
|
|
* cogl_program_link (program);
|
|
*
|
|
* pipeline = cogl_pipeline_new ();
|
|
* cogl_pipeline_set_user_program (pipeline, program);
|
|
*
|
|
* cogl_set_source_color4ub (0xff, 0x00, 0x00, 0xff);
|
|
* cogl_rectangle (0, 0, 100, 100);
|
|
* ]|
|
|
*
|
|
* It is possibly worth keeping in mind that this API is not part of
|
|
* the long term design for how we want to expose shaders to Cogl
|
|
* developers (We are planning on deprecating the cogl_program and
|
|
* cogl_shader APIs in favour of a "snippet" framework) but in the
|
|
* meantime we hope this will handle most practical GLSL and ARBfp
|
|
* requirements.
|
|
*
|
|
* Also remember you need to check for either the
|
|
* %COGL_FEATURE_SHADERS_GLSL or %COGL_FEATURE_SHADERS_ARBFP before
|
|
* using the cogl_program or cogl_shader API.
|
|
*
|
|
* Since: 2.0
|
|
* Stability: Unstable
|
|
*/
|
|
void
|
|
cogl_pipeline_set_user_program (CoglPipeline *pipeline,
|
|
CoglHandle program);
|
|
|
|
#define cogl_pipeline_set_depth_state cogl_pipeline_set_depth_state_EXP
|
|
/**
|
|
* cogl_pipeline_set_depth_state:
|
|
* @pipeline: A #CoglPipeline object
|
|
* @state: A #CoglDepthState struct
|
|
* @error: A #GError to report failures to setup the given @state.
|
|
*
|
|
* This commits all the depth state configured in @state struct to the
|
|
* given @pipeline. The configuration values are copied into the
|
|
* pipeline so there is no requirement to keep the #CoglDepthState
|
|
* struct around if you don't need it any more.
|
|
*
|
|
* Note: Since some platforms do not support the depth range feature
|
|
* it is possible for this function to fail and report an @error.
|
|
*
|
|
* Returns: TRUE if the GPU supports all the given @state else %FALSE
|
|
* and returns an @error.
|
|
*
|
|
* Since: 2.0
|
|
* Stability: Unstable
|
|
*/
|
|
gboolean
|
|
cogl_pipeline_set_depth_state (CoglPipeline *pipeline,
|
|
const CoglDepthState *state,
|
|
GError **error);
|
|
|
|
#define cogl_pipeline_get_depth_state cogl_pipeline_get_depth_state_EXP
|
|
/**
|
|
* cogl_pipeline_get_depth_state
|
|
* @pipeline: A #CoglPipeline object
|
|
* @state: A destination #CoglDepthState struct
|
|
*
|
|
* Retrieves the current depth state configuration for the given
|
|
* @pipeline as previously set using cogl_pipeline_set_depth_state().
|
|
*
|
|
* Since: 2.0
|
|
* Stability: Unstable
|
|
*/
|
|
void
|
|
cogl_pipeline_get_depth_state (CoglPipeline *pipeline,
|
|
CoglDepthState *state_out);
|
|
|
|
/**
|
|
* CoglPipelineCullFaceMode:
|
|
* @COGL_PIPELINE_CULL_FACE_MODE_NONE: Neither face will be
|
|
* called. This is the default.
|
|
* @COGL_PIPELINE_CULL_FACE_MODE_FRONT: Front faces will be called.
|
|
* @COGL_PIPELINE_CULL_FACE_MODE_BACK: Back faces will be called.
|
|
* @COGL_PIPELINE_CULL_FACE_MODE_BOTH: All faces will be called.
|
|
*
|
|
* Specifies which faces should be called. This can be set on a
|
|
* pipeline using cogl_pipeline_set_cull_face_mode().
|
|
*/
|
|
typedef enum
|
|
{
|
|
COGL_PIPELINE_CULL_FACE_MODE_NONE,
|
|
COGL_PIPELINE_CULL_FACE_MODE_FRONT,
|
|
COGL_PIPELINE_CULL_FACE_MODE_BACK,
|
|
COGL_PIPELINE_CULL_FACE_MODE_BOTH
|
|
} CoglPipelineCullFaceMode;
|
|
|
|
/**
|
|
* cogl_pipeline_set_cull_face_mode:
|
|
* @pipeline: A #CoglPipeline
|
|
* @cull_face_mode: The new mode to set
|
|
*
|
|
* Sets which faces will be culled when drawing. Face culling can be
|
|
* used to increase efficiency by avoiding drawing faces that would
|
|
* get overridden. For example, if a model has gaps so that it is
|
|
* impossible to see the inside then faces which are facing away from
|
|
* the screen will never be seen so there is no point in drawing
|
|
* them. This can be acheived by setting the cull face mode to
|
|
* %COGL_PIPELINE_CULL_FACE_MODE_BACK.
|
|
*
|
|
* Face culling relies on the primitives being drawn with a specific
|
|
* order to represent which faces are facing inside and outside the
|
|
* model. This order can be specified by calling
|
|
* cogl_pipeline_set_front_face_winding().
|
|
*
|
|
* Status: Unstable
|
|
* Since: 2.0
|
|
*/
|
|
void
|
|
cogl_pipeline_set_cull_face_mode (CoglPipeline *pipeline,
|
|
CoglPipelineCullFaceMode cull_face_mode);
|
|
|
|
/**
|
|
* cogl_pipeline_get_cull_face_mode:
|
|
*
|
|
* Return value: the cull face mode that was previously set with
|
|
* cogl_pipeline_set_cull_face_mode().
|
|
*
|
|
* Status: Unstable
|
|
* Since: 2.0
|
|
*/
|
|
CoglPipelineCullFaceMode
|
|
cogl_pipeline_get_cull_face_mode (CoglPipeline *pipeline);
|
|
|
|
/**
|
|
* cogl_pipeline_set_front_face_winding:
|
|
*
|
|
* The order of the vertices within a primitive specifies whether it
|
|
* is considered to be front or back facing. This function specifies
|
|
* which order is considered to be the front
|
|
* faces. %COGL_WINDING_COUNTER_CLOCKWISE sets the front faces to
|
|
* primitives with vertices in a counter-clockwise order and
|
|
* %COGL_WINDING_CLOCKWISE sets them to be clockwise. The default is
|
|
* %COGL_WINDING_COUNTER_CLOCKWISE.
|
|
*
|
|
* Status: Unstable
|
|
* Since: 2.0
|
|
*/
|
|
void
|
|
cogl_pipeline_set_front_face_winding (CoglPipeline *pipeline,
|
|
CoglWinding front_winding);
|
|
|
|
/**
|
|
* cogl_pipeline_set_front_face_winding:
|
|
*
|
|
* The order of the vertices within a primitive specifies whether it
|
|
* is considered to be front or back facing. This function specifies
|
|
* which order is considered to be the front
|
|
* faces. %COGL_WINDING_COUNTER_CLOCKWISE sets the front faces to
|
|
* primitives with vertices in a counter-clockwise order and
|
|
* %COGL_WINDING_CLOCKWISE sets them to be clockwise. The default is
|
|
* %COGL_WINDING_COUNTER_CLOCKWISE.
|
|
*
|
|
* Status: Unstable
|
|
* Since: 2.0
|
|
*/
|
|
CoglWinding
|
|
cogl_pipeline_get_front_face_winding (CoglPipeline *pipeline);
|
|
|
|
#define cogl_pipeline_set_uniform_1f \
|
|
cogl_pipeline_set_uniform_1f_EXP
|
|
/**
|
|
* cogl_pipeline_set_uniform_1f:
|
|
* @pipeline: A #CoglPipeline object
|
|
* @uniform_location: The uniform's location identifier
|
|
* @value: The new value for the uniform
|
|
*
|
|
* Sets a new value for the uniform at @uniform_location. If this
|
|
* pipeline has a user program attached and is later used as a source
|
|
* for drawing, the given value will be assigned to the uniform which
|
|
* can be accessed from the shader's source. The value for
|
|
* @uniform_location should be retrieved from the string name of the
|
|
* uniform by calling cogl_pipeline_get_uniform_location().
|
|
*
|
|
* This function should be used to set uniforms that are of type
|
|
* float. It can also be used to set a single member of a float array
|
|
* uniform.
|
|
*
|
|
* Since: 2.0
|
|
* Stability: Unstable
|
|
*/
|
|
void
|
|
cogl_pipeline_set_uniform_1f (CoglPipeline *pipeline,
|
|
int uniform_location,
|
|
float value);
|
|
|
|
#define cogl_pipeline_set_uniform_1i \
|
|
cogl_pipeline_set_uniform_1i_EXP
|
|
/**
|
|
* cogl_pipeline_set_uniform_1i:
|
|
* @pipeline: A #CoglPipeline object
|
|
* @uniform_location: The uniform's location identifier
|
|
* @value: The new value for the uniform
|
|
*
|
|
* Sets a new value for the uniform at @uniform_location. If this
|
|
* pipeline has a user program attached and is later used as a source
|
|
* for drawing, the given value will be assigned to the uniform which
|
|
* can be accessed from the shader's source. The value for
|
|
* @uniform_location should be retrieved from the string name of the
|
|
* uniform by calling cogl_pipeline_get_uniform_location().
|
|
*
|
|
* This function should be used to set uniforms that are of type
|
|
* int. It can also be used to set a single member of a int array
|
|
* uniform or a sampler uniform.
|
|
*
|
|
* Since: 2.0
|
|
* Stability: Unstable
|
|
*/
|
|
void
|
|
cogl_pipeline_set_uniform_1i (CoglPipeline *pipeline,
|
|
int uniform_location,
|
|
int value);
|
|
|
|
#define cogl_pipeline_set_uniform_float \
|
|
cogl_pipeline_set_uniform_float_EXP
|
|
/**
|
|
* cogl_pipeline_set_uniform_float:
|
|
* @pipeline: A #CoglPipeline object
|
|
* @uniform_location: The uniform's location identifier
|
|
* @n_components: The number of components in the corresponding uniform's type
|
|
* @count: The number of values to set
|
|
* @value: Pointer to the new values to set
|
|
*
|
|
* Sets new values for the uniform at @uniform_location. If this
|
|
* pipeline has a user program attached and is later used as a source
|
|
* for drawing, the given values will be assigned to the uniform which
|
|
* can be accessed from the shader's source. The value for
|
|
* @uniform_location should be retrieved from the string name of the
|
|
* uniform by calling cogl_pipeline_get_uniform_location().
|
|
*
|
|
* This function can be used to set any floating point type uniform,
|
|
* including float arrays and float vectors. For example, to set a
|
|
* single vec4 uniform you would use 4 for @n_components and 1 for
|
|
* @count. To set an array of 8 float values, you could use 1 for
|
|
* @n_components and 8 for @count.
|
|
*
|
|
* Since: 2.0
|
|
* Stability: Unstable
|
|
*/
|
|
void
|
|
cogl_pipeline_set_uniform_float (CoglPipeline *pipeline,
|
|
int uniform_location,
|
|
int n_components,
|
|
int count,
|
|
const float *value);
|
|
|
|
#define cogl_pipeline_set_uniform_int \
|
|
cogl_pipeline_set_uniform_int_EXP
|
|
/**
|
|
* cogl_pipeline_set_uniform_int:
|
|
* @pipeline: A #CoglPipeline object
|
|
* @uniform_location: The uniform's location identifier
|
|
* @n_components: The number of components in the corresponding uniform's type
|
|
* @count: The number of values to set
|
|
* @value: Pointer to the new values to set
|
|
*
|
|
* Sets new values for the uniform at @uniform_location. If this
|
|
* pipeline has a user program attached and is later used as a source
|
|
* for drawing, the given values will be assigned to the uniform which
|
|
* can be accessed from the shader's source. The value for
|
|
* @uniform_location should be retrieved from the string name of the
|
|
* uniform by calling cogl_pipeline_get_uniform_location().
|
|
*
|
|
* This function can be used to set any integer type uniform,
|
|
* including int arrays and int vectors. For example, to set a single
|
|
* ivec4 uniform you would use 4 for @n_components and 1 for
|
|
* @count. To set an array of 8 int values, you could use 1 for
|
|
* @n_components and 8 for @count.
|
|
*
|
|
* Since: 2.0
|
|
* Stability: Unstable
|
|
*/
|
|
void
|
|
cogl_pipeline_set_uniform_int (CoglPipeline *pipeline,
|
|
int uniform_location,
|
|
int n_components,
|
|
int count,
|
|
const int *value);
|
|
|
|
#define cogl_pipeline_set_uniform_matrix \
|
|
cogl_pipeline_set_uniform_matrix_EXP
|
|
/**
|
|
* cogl_pipeline_set_uniform_matrix:
|
|
* @pipeline: A #CoglPipeline object
|
|
* @uniform_location: The uniform's location identifier
|
|
* @dimensions: The size of the matrix
|
|
* @count: The number of values to set
|
|
* @transpose: Whether to transpose the matrix
|
|
* @value: Pointer to the new values to set
|
|
*
|
|
* Sets new values for the uniform at @uniform_location. If this
|
|
* pipeline has a user program attached and is later used as a source
|
|
* for drawing, the given values will be assigned to the uniform which
|
|
* can be accessed from the shader's source. The value for
|
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* @uniform_location should be retrieved from the string name of the
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* uniform by calling cogl_pipeline_get_uniform_location().
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*
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* This function can be used to set any matrix type uniform, including
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* matrix arrays. For example, to set a single mat4 uniform you would
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* use 4 for @dimensions and 1 for @count. To set an array of 8
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* mat3 values, you could use 3 for @dimensions and 8 for @count.
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*
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* If @transpose is %FALSE then the matrix is expected to be in
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* column-major order or if it is %TRUE then the matrix is in
|
|
* row-major order. You can pass a #CoglMatrix by calling by passing
|
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* the result of cogl_matrix_get_array() in @value and setting
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* @transpose to %FALSE.
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*
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* Since: 2.0
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* Stability: Unstable
|
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*/
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|
void
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cogl_pipeline_set_uniform_matrix (CoglPipeline *pipeline,
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int uniform_location,
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int dimensions,
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int count,
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gboolean transpose,
|
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const float *value);
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#endif /* COGL_ENABLE_EXPERIMENTAL_API */
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G_END_DECLS
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#endif /* __COGL_PIPELINE_STATE_H__ */
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