mirror of
https://github.com/brl/mutter.git
synced 2024-11-24 00:50:42 -05:00
3248bb1b75
COGL is starting to have more enumerations than I can handle by hand. Let's use glib-mkenums and be done with it.
721 lines
24 KiB
C
721 lines
24 KiB
C
/*
|
|
* Cogl
|
|
*
|
|
* An object oriented GL/GLES Abstraction/Utility Layer
|
|
*
|
|
* Copyright (C) 2008,2009 Intel Corporation.
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the
|
|
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
* Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
#ifndef __COGL_H__
|
|
#define __COGL_H__
|
|
|
|
#include <glib.h>
|
|
|
|
#define __COGL_H_INSIDE__
|
|
|
|
#include <cogl/cogl-defines-@CLUTTER_COGL@.h>
|
|
|
|
#include <cogl/cogl-vertex-buffer.h>
|
|
#include <cogl/cogl-matrix.h>
|
|
#include <cogl/cogl-vertex-buffer.h>
|
|
#include <cogl/cogl-fixed.h>
|
|
#include <cogl/cogl-color.h>
|
|
#include <cogl/cogl-offscreen.h>
|
|
#include <cogl/cogl-material.h>
|
|
#include <cogl/cogl-path.h>
|
|
#include <cogl/cogl-shader.h>
|
|
#include <cogl/cogl-bitmap.h>
|
|
#include <cogl/cogl-texture.h>
|
|
#include <cogl/cogl-types.h>
|
|
#include <cogl/cogl-debug.h>
|
|
#include <cogl/cogl-deprecated.h>
|
|
#include <cogl/cogl-enum-types.h>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
/**
|
|
* SECTION:cogl
|
|
* @short_description: General purpose API
|
|
*
|
|
* General utility functions for COGL.
|
|
*/
|
|
|
|
/**
|
|
* cogl_get_option_group:
|
|
*
|
|
* Retrieves the #GOptionGroup used by COGL to parse the command
|
|
* line options. Clutter uses this to handle the COGL command line
|
|
* options during its initialization process.
|
|
*
|
|
* Return value: a #GOptionGroup
|
|
*
|
|
* Since: 1.0
|
|
*/
|
|
GOptionGroup * cogl_get_option_group (void);
|
|
|
|
/* Misc */
|
|
/**
|
|
* cogl_get_features:
|
|
*
|
|
* Returns all of the features supported by COGL.
|
|
*
|
|
* Return value: A logical OR of all the supported COGL features.
|
|
*
|
|
* Since: 0.8
|
|
*/
|
|
CoglFeatureFlags cogl_get_features (void);
|
|
|
|
/**
|
|
* cogl_features_available:
|
|
* @features: A bitmask of features to check for
|
|
*
|
|
* Checks whether the given COGL features are available. Multiple
|
|
* features can be checked for by or-ing them together with the '|'
|
|
* operator. %TRUE is only returned if all of the requested features
|
|
* are available.
|
|
*
|
|
* Return value: %TRUE if the features are available, %FALSE otherwise.
|
|
*/
|
|
gboolean cogl_features_available (CoglFeatureFlags features);
|
|
|
|
/**
|
|
* cogl_get_proc_address:
|
|
* @name: the name of the function.
|
|
*
|
|
* Gets a pointer to a given GL or GL ES extension function. This acts
|
|
* as a wrapper around glXGetProcAddress() or whatever is the
|
|
* appropriate function for the current backend.
|
|
*
|
|
* Return value: a pointer to the requested function or %NULL if the
|
|
* function is not available.
|
|
*/
|
|
CoglFuncPtr cogl_get_proc_address (const gchar *name);
|
|
|
|
/**
|
|
* cogl_check_extension:
|
|
* @name: extension to check for
|
|
* @ext: list of extensions
|
|
*
|
|
* Check whether @name occurs in list of extensions in @ext.
|
|
*
|
|
* Returns: %TRUE if the extension occurs in the list, %FALSE otherwize.
|
|
*/
|
|
gboolean cogl_check_extension (const gchar *name,
|
|
const gchar *ext);
|
|
|
|
/**
|
|
* cogl_get_bitmasks:
|
|
* @red: Return location for the number of red bits or %NULL
|
|
* @green: Return location for the number of green bits or %NULL
|
|
* @blue: Return location for the number of blue bits or %NULL
|
|
* @alpha: Return location for the number of alpha bits or %NULL
|
|
*
|
|
* Gets the number of bitplanes used for each of the color components
|
|
* in the color buffer. Pass %NULL for any of the arguments if the
|
|
* value is not required.
|
|
*/
|
|
void cogl_get_bitmasks (gint *red,
|
|
gint *green,
|
|
gint *blue,
|
|
gint *alpha);
|
|
|
|
/**
|
|
* cogl_perspective:
|
|
* @fovy: Vertical of view angle in degrees.
|
|
* @aspect: Aspect ratio of diesplay
|
|
* @z_near: Nearest visible point
|
|
* @z_far: Furthest visible point along the z-axis
|
|
*
|
|
* Replaces the current projection matrix with a perspective matrix
|
|
* based on the provided values.
|
|
*/
|
|
void cogl_perspective (float fovy,
|
|
float aspect,
|
|
float z_near,
|
|
float z_far);
|
|
|
|
/**
|
|
* cogl_frustum:
|
|
* @left: Left clipping plane
|
|
* @right: Right clipping plane
|
|
* @bottom: Bottom clipping plane
|
|
* @top: Top clipping plane
|
|
* @z_near: Nearest visible point
|
|
* @z_far: Furthest visible point along the z-axis
|
|
*
|
|
* Replaces the current projection matrix with a perspective matrix
|
|
* for the given viewing frustum.
|
|
*
|
|
* Since: 0.8.2
|
|
*/
|
|
void cogl_frustum (float left,
|
|
float right,
|
|
float bottom,
|
|
float top,
|
|
float z_near,
|
|
float z_far);
|
|
|
|
/**
|
|
* cogl_ortho:
|
|
* @left: The coordinate for the left clipping plane
|
|
* @right: The coordinate for the right clipping plane
|
|
* @bottom: The coordinate for the bottom clipping plane
|
|
* @top: The coordinate for the top clipping plane
|
|
* @near: The coordinate for the near clipping plane (may be negative if
|
|
* the plane is behind the viewer)
|
|
* @far: The coordinate for the far clipping plane (may be negative if
|
|
* the plane is behind the viewer)
|
|
*
|
|
* Replaces the current projection matrix with a parallel projection
|
|
* matrix.
|
|
*
|
|
* Since: 1.0
|
|
*/
|
|
void cogl_ortho (float left,
|
|
float right,
|
|
float bottom,
|
|
float top,
|
|
float near,
|
|
float far);
|
|
|
|
/*
|
|
* _cogl_setup_viewport:
|
|
* @width: Width of the viewport
|
|
* @height: Height of the viewport
|
|
* @fovy: Field of view angle in degrees
|
|
* @aspect: Aspect ratio to determine the field of view along the x-axis
|
|
* @z_near: Nearest visible point along the z-axis
|
|
* @z_far: Furthest visible point along the z-axis
|
|
*
|
|
* Replaces the current viewport and projection matrix with the given
|
|
* values. The viewport is placed at the top left corner of the window
|
|
* with the given width and height. The projection matrix is replaced
|
|
* with one that has a viewing angle of @fovy along the y-axis and a
|
|
* view scaled according to @aspect along the x-axis. The view is
|
|
* clipped according to @z_near and @z_far on the z-axis.
|
|
*
|
|
* This function is used only by Clutter.
|
|
*/
|
|
void _cogl_setup_viewport (guint width,
|
|
guint height,
|
|
float fovy,
|
|
float aspect,
|
|
float z_near,
|
|
float z_far);
|
|
|
|
/**
|
|
* cogl_viewport:
|
|
* @width: Width of the viewport
|
|
* @height: Height of the viewport
|
|
*
|
|
* Replace the current viewport with the given values.
|
|
*
|
|
* Since: 0.8.2
|
|
*/
|
|
void cogl_viewport (guint width,
|
|
guint height);
|
|
|
|
/**
|
|
* cogl_push_matrix:
|
|
*
|
|
* Store the current model-view matrix on the matrix stack. The matrix
|
|
* can later be restored with cogl_pop_matrix().
|
|
*/
|
|
void cogl_push_matrix (void);
|
|
|
|
/**
|
|
* cogl_pop_matrix:
|
|
*
|
|
* Restore the current model-view matrix from the matrix stack.
|
|
*/
|
|
void cogl_pop_matrix (void);
|
|
|
|
/**
|
|
* cogl_scale:
|
|
* @x: Amount to scale along the x-axis
|
|
* @y: Amount to scale along the y-axis
|
|
* @z: Amount to scale along the z-axis
|
|
*
|
|
* Multiplies the current model-view matrix by one that scales the x,
|
|
* y and z axes by the given values.
|
|
*/
|
|
void cogl_scale (float x,
|
|
float y,
|
|
float z);
|
|
|
|
/**
|
|
* cogl_translate:
|
|
* @x: Distance to translate along the x-axis
|
|
* @y: Distance to translate along the y-axis
|
|
* @z: Distance to translate along the z-axis
|
|
*
|
|
* Multiplies the current model-view matrix by one that translates the
|
|
* model along all three axes according to the given values.
|
|
*/
|
|
void cogl_translate (float x,
|
|
float y,
|
|
float z);
|
|
|
|
/**
|
|
* cogl_rotate:
|
|
* @angle: Angle in degrees to rotate.
|
|
* @x: X-component of vertex to rotate around.
|
|
* @y: Y-component of vertex to rotate around.
|
|
* @z: Z-component of vertex to rotate around.
|
|
*
|
|
* Multiplies the current model-view matrix by one that rotates the
|
|
* model around the vertex specified by @x, @y and @z. The rotation
|
|
* follows the right-hand thumb rule so for example rotating by 10
|
|
* degrees about the vertex (0, 0, 1) causes a small counter-clockwise
|
|
* rotation.
|
|
*/
|
|
void cogl_rotate (float angle,
|
|
float x,
|
|
float y,
|
|
float z);
|
|
|
|
/**
|
|
* cogl_get_modelview_matrix:
|
|
* @matrix: pointer to a CoglMatrix to recieve the matrix
|
|
*
|
|
* Stores the current model-view matrix in @matrix.
|
|
*/
|
|
void cogl_get_modelview_matrix (CoglMatrix *matrix);
|
|
|
|
/**
|
|
* cogl_set_modelview_matrix:
|
|
* @matrix: pointer to a CoglMatrix to set as the new model-view matrix
|
|
*
|
|
* Loads matrix as the new model-view matrix.
|
|
*/
|
|
void cogl_set_modelview_matrix (CoglMatrix *matrix);
|
|
|
|
/**
|
|
* cogl_get_projection_matrix:
|
|
* @matrix: pointer to a CoglMatrix to recieve the matrix
|
|
*
|
|
* Stores the current projection matrix in @matrix.
|
|
*/
|
|
void cogl_get_projection_matrix (CoglMatrix *matrix);
|
|
|
|
/**
|
|
* cogl_set_projection_matrix:
|
|
* @matrix: pointer to a CoglMatrix to set as the new projection matrix
|
|
*
|
|
* Loads matrix as the new projection matrix.
|
|
*/
|
|
void cogl_set_projection_matrix (CoglMatrix *matrix);
|
|
|
|
/**
|
|
* cogl_get_viewport:
|
|
* @v: pointer to a 4 element array of #float<!-- -->s to
|
|
* receive the viewport dimensions.
|
|
*
|
|
* Stores the current viewport in @v. @v[0] and @v[1] get the x and y
|
|
* position of the viewport and @v[2] and @v[3] get the width and
|
|
* height.
|
|
*/
|
|
void cogl_get_viewport (float v[4]);
|
|
|
|
/**
|
|
* cogl_set_depth_test_enable:
|
|
* @setting: %TRUE to enable depth testing or %FALSE to disable.
|
|
*
|
|
* Sets whether depth testing is enabled. If it is disabled then the
|
|
* order that actors are layered on the screen depends solely on the
|
|
* order specified using clutter_actor_raise() and
|
|
* clutter_actor_lower(), otherwise it will also take into account the
|
|
* actor's depth. Depth testing is disabled by default.
|
|
*/
|
|
void cogl_set_depth_test_enable (gboolean setting);
|
|
|
|
/**
|
|
* cogl_get_depth_test_enable:
|
|
*
|
|
* Queries if depth testing has been enabled via cogl_set_depth_test_enable()
|
|
*
|
|
* Returns: TRUE if depth testing is enabled else FALSE
|
|
*/
|
|
gboolean cogl_get_depth_test_enable (void);
|
|
|
|
/**
|
|
* cogl_set_backface_culling_enabled:
|
|
* @setting: %TRUE to enable backface culling or %FALSE to disable.
|
|
*
|
|
* Sets whether textures positioned so that their backface is showing
|
|
* should be hidden. This can be used to efficiently draw two-sided
|
|
* textures or fully closed cubes without enabling depth testing. This
|
|
* only affects calls to the cogl_rectangle* family of functions and
|
|
* cogl_vertex_buffer_draw*. Backface culling is disabled by default.
|
|
*/
|
|
void cogl_set_backface_culling_enabled (gboolean setting);
|
|
|
|
/**
|
|
* cogl_get_backface_culling_enabled:
|
|
*
|
|
* Queries if backface culling has been enabled via
|
|
* cogl_set_backface_culling_enabled()
|
|
*
|
|
* Returns: TRUE if backface culling is enabled else FALSE
|
|
*/
|
|
gboolean cogl_get_backface_culling_enabled (void);
|
|
|
|
/**
|
|
* cogl_set_fog:
|
|
* @fog_color: The color of the fog
|
|
* @mode: A CoglFogMode that determines the equation used to calculate the
|
|
* fogging blend factor.
|
|
* @density: Used by the EXPONENTIAL and EXPONENTIAL_SQUARED CoglFogMode
|
|
* equations.
|
|
* @z_near: Position along z-axis where no fogging should be applied
|
|
* @z_far: Position along z-axes where full fogging should be applied
|
|
*
|
|
* Enables fogging. Fogging causes vertices that are further away from
|
|
* the eye to be rendered with a different color. The color is determined
|
|
* according to the chosen fog mode; at it's simplest the color is
|
|
* linearly interpolated so that vertices at @z_near are drawn fully
|
|
* with their original color and vertices at @z_far are drawn fully
|
|
* with @fog_color. Fogging will remain enabled until you call
|
|
* cogl_disable_fog().
|
|
*/
|
|
void cogl_set_fog (const CoglColor *fog_color,
|
|
CoglFogMode mode,
|
|
float density,
|
|
float z_near,
|
|
float z_far);
|
|
|
|
/**
|
|
* cogl_disable_fog:
|
|
*
|
|
* This function disables fogging, so primitives drawn afterwards will not be
|
|
* blended with any previously set fog color.
|
|
*/
|
|
void cogl_disable_fog (void);
|
|
|
|
/**
|
|
* CoglBufferBit:
|
|
* @COGL_BUFFER_BIT_COLOR: Selects the primary color buffer
|
|
* @COGL_BUFFER_BIT_DEPTH: Selects the depth buffer
|
|
* @COGL_BUFFER_BIT_STENCIL: Selects the stencil buffer
|
|
*
|
|
* Types of auxiliary buffers
|
|
*
|
|
* Since: 1.0
|
|
*/
|
|
typedef enum {
|
|
COGL_BUFFER_BIT_COLOR = 1L<<0,
|
|
COGL_BUFFER_BIT_DEPTH = 1L<<1,
|
|
COGL_BUFFER_BIT_STENCIL = 1L<<2
|
|
} CoglBufferBit;
|
|
|
|
/**
|
|
* cogl_clear:
|
|
* @color: Background color to clear to
|
|
* @buffers: A mask of #CoglBufferBit<!-- -->'s identifying which auxiliary
|
|
* buffers to clear
|
|
*
|
|
* Clears all the auxiliary buffers identified in the @buffers mask, and if
|
|
* that includes the color buffer then the specified @color is used.
|
|
*/
|
|
void cogl_clear (const CoglColor *color,
|
|
gulong buffers);
|
|
|
|
/**
|
|
* cogl_set_source:
|
|
* @material: A CoglMaterial object
|
|
*
|
|
* This function sets the source material that will be used to fill subsequent
|
|
* geometry emitted via the cogl API.
|
|
*
|
|
* Note: in the future we may add the ability to set a front facing material,
|
|
* and a back facing material, in which case this function will set both to the
|
|
* same.
|
|
*
|
|
* Since 1.0
|
|
*/
|
|
void cogl_set_source (CoglHandle material);
|
|
|
|
/**
|
|
* cogl_set_source_color:
|
|
* @color: a #CoglColor
|
|
*
|
|
* Sets the source color using normalized values for each component.
|
|
* This color will be used for any subsequent drawing operation.
|
|
*
|
|
* See also cogl_set_source_color4ub() and cogl_set_source_color4f()
|
|
* if you already have the color components.
|
|
*
|
|
* Since: 1.0
|
|
*/
|
|
void cogl_set_source_color (const CoglColor *color);
|
|
|
|
/**
|
|
* cogl_set_source_color4ub:
|
|
* @red: value of the red channel, between 0 and 255
|
|
* @green: value of the green channel, between 0 and 255
|
|
* @blue: value of the blue channel, between 0 and 255
|
|
* @alpha: value of the alpha channel, between 0 and 255
|
|
*
|
|
* This is a convenience function for creating a solid fill source material
|
|
* from the given color using unsigned bytes for each component. This
|
|
* color will be used for any subsequent drawing operation.
|
|
*
|
|
* The value for each component is an unsigned byte in the range
|
|
* between 0 and 255.
|
|
*
|
|
* Since: 1.0
|
|
*/
|
|
void cogl_set_source_color4ub (guint8 red,
|
|
guint8 green,
|
|
guint8 blue,
|
|
guint8 alpha);
|
|
|
|
/**
|
|
* cogl_set_source_color4f:
|
|
* @red: value of the red channel, between 0 and %1.0
|
|
* @green: value of the green channel, between 0 and %1.0
|
|
* @blue: value of the blue channel, between 0 and %1.0
|
|
* @alpha: value of the alpha channel, between 0 and %1.0
|
|
*
|
|
* This is a convenience function for creating a solid fill source material
|
|
* from the given color using normalized values for each component. This color
|
|
* will be used for any subsequent drawing operation.
|
|
*
|
|
* The value for each component is a fixed point number in the range
|
|
* between 0 and %1.0. If the values passed in are outside that
|
|
* range, they will be clamped.
|
|
*
|
|
* Since: 1.0
|
|
*/
|
|
void cogl_set_source_color4f (float red,
|
|
float green,
|
|
float blue,
|
|
float alpha);
|
|
|
|
/**
|
|
* cogl_set_source_texture:
|
|
* @texture_handle: The Cogl texture you want as your source
|
|
*
|
|
* This is a convenience function for creating a material with the first
|
|
* layer set to #texture_handle and setting that material as the source with
|
|
* cogl_set_source.
|
|
*
|
|
* Note: There is no interaction between calls to cogl_set_source_color
|
|
* and cogl_set_source_texture. If you need to blend a texture with a color then
|
|
* you can create a simple material like this:
|
|
* <programlisting>
|
|
* material = cogl_material_new ();
|
|
* cogl_material_set_color4ub (material, 0xff, 0x00, 0x00, 0x80);
|
|
* cogl_material_set_layer (material, 0, tex_handle);
|
|
* cogl_set_source (material);
|
|
* </programlisting>
|
|
*
|
|
* Since 1.0
|
|
*/
|
|
void cogl_set_source_texture (CoglHandle texture_handle);
|
|
|
|
/**
|
|
* SECTION:cogl-clipping
|
|
* @short_description: Fuctions for manipulating a stack of clipping regions
|
|
*
|
|
* To support clipping your geometry to rectangles or paths Cogl exposes a
|
|
* stack based API whereby each clip region you push onto the stack is
|
|
* intersected with the previous region.
|
|
*/
|
|
|
|
/**
|
|
* cogl_clip_push_window_rect:
|
|
* @x_offset: left edge of the clip rectangle in window coordinates
|
|
* @y_offset: top edge of the clip rectangle in window coordinates
|
|
* @width: width of the clip rectangle
|
|
* @height: height of the clip rectangle
|
|
*
|
|
* Specifies a rectangular clipping area for all subsequent drawing
|
|
* operations. Any drawing commands that extend outside the rectangle
|
|
* will be clipped so that only the portion inside the rectangle will
|
|
* be displayed. The rectangle dimensions are not transformed by the
|
|
* current model-view matrix.
|
|
*
|
|
* The rectangle is intersected with the current clip region. To undo
|
|
* the effect of this function, call cogl_clip_pop().
|
|
*/
|
|
void cogl_clip_push_window_rect (float x_offset,
|
|
float y_offset,
|
|
float width,
|
|
float height);
|
|
|
|
/**
|
|
* cogl_clip_push:
|
|
* @x_offset: left edge of the clip rectangle
|
|
* @y_offset: top edge of the clip rectangle
|
|
* @width: width of the clip rectangle
|
|
* @height: height of the clip rectangle
|
|
*
|
|
* Specifies a rectangular clipping area for all subsequent drawing
|
|
* operations. Any drawing commands that extend outside the rectangle
|
|
* will be clipped so that only the portion inside the rectangle will
|
|
* be displayed. The rectangle dimensions are transformed by the
|
|
* current model-view matrix.
|
|
*
|
|
* The rectangle is intersected with the current clip region. To undo
|
|
* the effect of this function, call cogl_clip_pop().
|
|
*/
|
|
void cogl_clip_push (float x_offset,
|
|
float y_offset,
|
|
float width,
|
|
float height);
|
|
|
|
/**
|
|
* cogl_clip_push_from_path:
|
|
*
|
|
* Sets a new clipping area using the current path. The current path
|
|
* is then cleared. The clipping area is intersected with the previous
|
|
* clipping area. To restore the previous clipping area, call
|
|
* cogl_clip_pop().
|
|
*
|
|
* Since: 1.0
|
|
*/
|
|
void cogl_clip_push_from_path (void);
|
|
|
|
/**
|
|
* cogl_clip_push_from_path_preserve:
|
|
*
|
|
* Sets a new clipping area using the current path. The current path
|
|
* is then cleared. The clipping area is intersected with the previous
|
|
* clipping area. To restore the previous clipping area, call
|
|
* cogl_clip_pop().
|
|
*
|
|
* Since: 1.0
|
|
*/
|
|
void cogl_clip_push_from_path_preserve (void);
|
|
|
|
/**
|
|
* cogl_clip_pop:
|
|
*
|
|
* Reverts the clipping region to the state before the last call to
|
|
* cogl_clip_push().
|
|
*/
|
|
void cogl_clip_pop (void);
|
|
|
|
/**
|
|
* cogl_clip_ensure:
|
|
*
|
|
* Ensures that the current clipping region has been set in GL. This
|
|
* will automatically be called before any Cogl primitives but it
|
|
* maybe be neccessary to call if you are using raw GL calls with
|
|
* clipping.
|
|
*
|
|
* Since: 1.0
|
|
*/
|
|
void cogl_clip_ensure (void);
|
|
|
|
/**
|
|
* cogl_clip_stack_save:
|
|
*
|
|
* Save the entire state of the clipping stack and then clear all
|
|
* clipping. The previous state can be returned to with
|
|
* cogl_clip_stack_restore(). Each call to cogl_clip_push() after this
|
|
* must be matched by a call to cogl_clip_pop() before calling
|
|
* cogl_clip_stack_restore().
|
|
*
|
|
* Since: 0.8.2
|
|
*/
|
|
void cogl_clip_stack_save (void);
|
|
|
|
/**
|
|
* cogl_clip_stack_restore:
|
|
*
|
|
* Restore the state of the clipping stack that was previously saved
|
|
* by cogl_clip_stack_save().
|
|
*
|
|
* Since: 0.8.2
|
|
*/
|
|
void cogl_clip_stack_restore (void);
|
|
|
|
/**
|
|
* cogl_set_draw_buffer:
|
|
* @target: A #CoglBufferTarget that specifies what kind of draw buffer you
|
|
* are setting as the render target.
|
|
* @offscreen: If you are setting a draw buffer of type COGL_OFFSCREEN_BUFFER
|
|
* then this is a CoglHandle for the offscreen buffer.
|
|
*
|
|
* This redirects all subsequent drawing to the specified draw buffer. This
|
|
* can either be an offscreen buffer created with
|
|
* cogl_offscreen_new_to_texture () or you can revert to your original
|
|
* on screen window buffer.
|
|
*/
|
|
void cogl_set_draw_buffer (CoglBufferTarget target,
|
|
CoglHandle offscreen);
|
|
|
|
/**
|
|
* cogl_push_draw_buffer:
|
|
*
|
|
* Save cogl_set_draw_buffer() state.
|
|
*/
|
|
void cogl_push_draw_buffer (void);
|
|
|
|
/**
|
|
* cogl_pop_draw_buffer:
|
|
*
|
|
* Restore cogl_set_draw_buffer() state.
|
|
*/
|
|
void cogl_pop_draw_buffer (void);
|
|
|
|
|
|
/*
|
|
* Internal API available only to Clutter.
|
|
*
|
|
* These are typically only to deal with the poor seperation of
|
|
* responsabilities that currently exists between Clutter and Cogl.
|
|
* Eventually a lot of the backend code currently in Clutter will
|
|
* move down into Cogl and these functions will be removed.
|
|
*/
|
|
|
|
void _cogl_destroy_context (void);
|
|
|
|
/* XXX: Removed before we release Clutter 1.0 since the implementation
|
|
* wasn't complete, and so we assume no one is using this yet. Util we
|
|
* have some one with a good usecase, we can't pretend to support breaking
|
|
* out into raw OpenGL. */
|
|
#if 0
|
|
/*
|
|
* cogl_flush_gl_state:
|
|
* @flags: flags controlling what is flushed; currently unused, pass in 0
|
|
*
|
|
* As an optimization, COGL functions may not immediately modify GL's
|
|
* state, instead batching up changes and applying them "just in
|
|
* time." Unapplied state could include glEnable() flags and the
|
|
* current transformation matrix among other examples. If you want to
|
|
* use GL directly, you need to flush any state COGL may have kept
|
|
* around. cogl_flush_gl_state() syncs all of COGL's state to GL.
|
|
*
|
|
* Since: 1.0
|
|
*/
|
|
void cogl_flush_gl_state (int flags);
|
|
#endif
|
|
|
|
/* private */
|
|
void _cogl_set_indirect_context (gboolean indirect);
|
|
|
|
G_END_DECLS
|
|
|
|
#undef __COGL_H_INSIDE__
|
|
|
|
#endif /* __COGL_H__ */
|