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54735dec84
The coding style has for a long time said to avoid using redundant glib
data types such as gint or gchar etc because we feel that they make the
code look unnecessarily foreign to developers coming from outside of the
Gnome developer community.
Note: When we tried to find the historical rationale for the types we
just found that they were apparently only added for consistent syntax
highlighting which didn't seem that compelling.
Up until now we have been continuing to use some of the platform
specific type such as gint{8,16,32,64} and gsize but this patch switches
us over to using the standard c99 equivalents instead so we can further
ensure that our code looks familiar to the widest range of C developers
who might potentially contribute to Cogl.
So instead of using the gint{8,16,32,64} and guint{8,16,32,64} types this
switches all Cogl code to instead use the int{8,16,32,64}_t and
uint{8,16,32,64}_t c99 types instead.
Instead of gsize we now use size_t
For now we are not going to use the c99 _Bool type and instead we have
introduced a new CoglBool type to use instead of gboolean.
Reviewed-by: Neil Roberts <neil@linux.intel.com>
(cherry picked from commit 5967dad2400d32ca6319cef6cb572e81bf2c15f0)
174 lines
5.1 KiB
C
174 lines
5.1 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 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_H__
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#define __COGL_PIPELINE_H__
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/* We forward declare the CoglPipeline type here to avoid some circular
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* dependency issues with the following headers.
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*/
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typedef struct _CoglPipeline CoglPipeline;
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#include <cogl/cogl-types.h>
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#include <cogl/cogl-context.h>
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#include <cogl/cogl-snippet.h>
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G_BEGIN_DECLS
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#ifdef COGL_ENABLE_EXPERIMENTAL_API
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/**
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* SECTION:cogl-pipeline
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* @short_description: Functions for creating and manipulating the GPU
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* pipeline
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*
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* Cogl allows creating and manipulating objects representing the full
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* configuration of the GPU pipeline. In simplified terms the GPU
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* pipeline takes primitive geometry as the input, it first performs
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* vertex processing, allowing you to deform your geometry, then
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* rasterizes that (turning it from pure geometry into fragments) then
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* performs fragment processing including depth testing and texture
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* mapping. Finally it blends the result with the framebuffer.
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*/
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#define COGL_PIPELINE(OBJECT) ((CoglPipeline *)OBJECT)
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/**
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* cogl_pipeline_new:
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* @context: a #CoglContext
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*
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* Allocates and initializes a default simple pipeline that will color
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* a primitive white.
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*
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* Return value: a pointer to a new #CoglPipeline
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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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CoglPipeline *
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cogl_pipeline_new (CoglContext *context);
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/**
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* cogl_pipeline_copy:
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* @source: a #CoglPipeline object to copy
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*
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* Creates a new pipeline with the configuration copied from the
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* source pipeline.
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*
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* We would strongly advise developers to always aim to use
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* cogl_pipeline_copy() instead of cogl_pipeline_new() whenever there will
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* be any similarity between two pipelines. Copying a pipeline helps Cogl
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* keep track of a pipelines ancestry which we may use to help minimize GPU
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* state changes.
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*
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* Returns: a pointer to the newly allocated #CoglPipeline
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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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CoglPipeline *
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cogl_pipeline_copy (CoglPipeline *source);
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/**
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* cogl_is_pipeline:
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* @object: A #CoglObject
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*
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* Gets whether the given @object references an existing pipeline object.
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*
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* Return value: %TRUE if the @object references a #CoglPipeline,
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* %FALSE otherwise
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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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CoglBool
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cogl_is_pipeline (void *object);
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/**
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* CoglPipelineLayerCallback:
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* @pipeline: The #CoglPipeline whos layers are being iterated
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* @layer_index: The current layer index
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* @user_data: The private data passed to cogl_pipeline_foreach_layer()
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*
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* The callback prototype used with cogl_pipeline_foreach_layer() for
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* iterating all the layers of a @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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typedef CoglBool (*CoglPipelineLayerCallback) (CoglPipeline *pipeline,
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int layer_index,
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void *user_data);
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/**
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* cogl_pipeline_foreach_layer:
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* @pipeline: A #CoglPipeline object
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* @callback: A #CoglPipelineLayerCallback to be called for each layer
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* index
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* @user_data: Private data that will be passed to the callback
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*
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* Iterates all the layer indices of the given @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_foreach_layer (CoglPipeline *pipeline,
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CoglPipelineLayerCallback callback,
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void *user_data);
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/**
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* cogl_pipeline_get_uniform_location:
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* @pipeline: A #CoglPipeline object
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* @uniform_name: The name of a uniform
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*
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* This is used to get an integer representing the uniform with the
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* name @uniform_name. The integer can be passed to functions such as
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* cogl_pipeline_set_uniform_1f() to set the value of a uniform.
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*
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* This function will always return a valid integer. Ie, unlike
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* OpenGL, it does not return -1 if the uniform is not available in
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* this pipeline so it can not be used to test whether uniforms are
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* present. It is not necessary to set the program on the pipeline
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* before calling this function.
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*
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* Return value: A integer representing the location of the given uniform.
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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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int
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cogl_pipeline_get_uniform_location (CoglPipeline *pipeline,
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const char *uniform_name);
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#endif /* COGL_ENABLE_EXPERIMENTAL_API */
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G_END_DECLS
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#endif /* __COGL_PIPELINE_H__ */
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