a0441778ad
Since the Cogl 1.18 branch is actively maintained in parallel with the
master branch; this is a counter part to commit 1b83ef938fc16b which
re-licensed the master branch to use the MIT license.
This re-licensing is a follow up to the proposal that was sent to the
Cogl mailing list:
http://lists.freedesktop.org/archives/cogl/2013-December/001465.html
Note: there was a copyright assignment policy in place for Clutter (and
therefore Cogl which was part of Clutter at the time) until the 11th of
June 2010 and so we only checked the details after that point (commit
0bbf50f905)
For each file, authors were identified via this Git command:
$ git blame -p -C -C -C20 -M -M10 0bbf50f905..HEAD
We received blanket approvals for re-licensing all Red Hat and Collabora
contributions which reduced how many people needed to be contacted
individually:
- http://lists.freedesktop.org/archives/cogl/2013-December/001470.html
- http://lists.freedesktop.org/archives/cogl/2014-January/001536.html
Individual approval requests were sent to all the other identified authors
who all confirmed the re-license on the Cogl mailinglist:
http://lists.freedesktop.org/archives/cogl/2014-January
As well as updating the copyright header in all sources files, the
COPYING file has been updated to reflect the license change and also
document the other licenses used in Cogl such as the SGI Free Software
License B, version 2.0 and the 3-clause BSD license.
This patch was not simply cherry-picked from master; but the same
methodology was used to check the source files.
197 lines
7.2 KiB
C
197 lines
7.2 KiB
C
/*
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* Cogl
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*
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* A Low Level GPU Graphics and Utilities API
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*
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* Copyright (C) 2007,2008,2009 Intel Corporation.
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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*
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*/
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#ifndef __COGL_PRIMITIVES_H
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#define __COGL_PRIMITIVES_H
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#include <glib.h>
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COGL_BEGIN_DECLS
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/**
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* SECTION:cogl-primitives
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* @short_description: Functions that draw various primitive 3D shapes
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*
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* The primitives API provides utilities for drawing some
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* common 3D shapes in a more convenient way than the CoglVertexBuffer
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* API provides.
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*/
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/**
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* cogl_rectangle:
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* @x_1: X coordinate of the top-left corner
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* @y_1: Y coordinate of the top-left corner
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* @x_2: X coordinate of the bottom-right corner
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* @y_2: Y coordinate of the bottom-right corner
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*
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* Fills a rectangle at the given coordinates with the current source material
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**/
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void
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cogl_rectangle (float x_1,
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float y_1,
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float x_2,
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float y_2);
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/**
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* cogl_rectangle_with_texture_coords:
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* @x1: x coordinate upper left on screen.
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* @y1: y coordinate upper left on screen.
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* @x2: x coordinate lower right on screen.
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* @y2: y coordinate lower right on screen.
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* @tx1: x part of texture coordinate to use for upper left pixel
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* @ty1: y part of texture coordinate to use for upper left pixel
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* @tx2: x part of texture coordinate to use for lower right pixel
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* @ty2: y part of texture coordinate to use for left pixel
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*
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* Draw a rectangle using the current material and supply texture coordinates
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* to be used for the first texture layer of the material. To draw the entire
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* texture pass in @tx1=0.0 @ty1=0.0 @tx2=1.0 @ty2=1.0.
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*
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* Since: 1.0
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*/
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void
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cogl_rectangle_with_texture_coords (float x1,
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float y1,
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float x2,
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float y2,
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float tx1,
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float ty1,
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float tx2,
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float ty2);
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/**
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* cogl_rectangle_with_multitexture_coords:
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* @x1: x coordinate upper left on screen.
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* @y1: y coordinate upper left on screen.
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* @x2: x coordinate lower right on screen.
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* @y2: y coordinate lower right on screen.
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* @tex_coords: (in) (array) (transfer none): An array containing groups of
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* 4 float values: [tx1, ty1, tx2, ty2] that are interpreted as two texture
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* coordinates; one for the upper left texel, and one for the lower right
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* texel. Each value should be between 0.0 and 1.0, where the coordinate
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* (0.0, 0.0) represents the top left of the texture, and (1.0, 1.0) the
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* bottom right.
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* @tex_coords_len: The length of the tex_coords array. (e.g. for one layer
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* and one group of texture coordinates, this would be 4)
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*
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* This function draws a rectangle using the current source material to
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* texture or fill with. As a material may contain multiple texture layers
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* this interface lets you supply texture coordinates for each layer of the
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* material.
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*
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* The first pair of coordinates are for the first layer (with the smallest
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* layer index) and if you supply less texture coordinates than there are
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* layers in the current source material then default texture coordinates
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* (0.0, 0.0, 1.0, 1.0) are generated.
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*
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* Since: 1.0
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*/
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void
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cogl_rectangle_with_multitexture_coords (float x1,
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float y1,
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float x2,
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float y2,
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const float *tex_coords,
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int tex_coords_len);
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/**
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* cogl_rectangles_with_texture_coords:
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* @verts: (in) (array) (transfer none): an array of vertices
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* @n_rects: number of rectangles to draw
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*
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* Draws a series of rectangles in the same way that
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* cogl_rectangle_with_texture_coords() does. In some situations it can give a
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* significant performance boost to use this function rather than
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* calling cogl_rectangle_with_texture_coords() separately for each rectangle.
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*
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* @verts should point to an array of #float<!-- -->s with
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* @n_rects * 8 elements. Each group of 8 values corresponds to the
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* parameters x1, y1, x2, y2, tx1, ty1, tx2 and ty2 and have the same
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* meaning as in cogl_rectangle_with_texture_coords().
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*
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* Since: 0.8.6
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*/
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void
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cogl_rectangles_with_texture_coords (const float *verts,
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unsigned int n_rects);
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/**
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* cogl_rectangles:
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* @verts: (in) (array) (transfer none): an array of vertices
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* @n_rects: number of rectangles to draw
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*
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* Draws a series of rectangles in the same way that
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* cogl_rectangle() does. In some situations it can give a
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* significant performance boost to use this function rather than
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* calling cogl_rectangle() separately for each rectangle.
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*
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* @verts should point to an array of #float<!-- -->s with
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* @n_rects * 4 elements. Each group of 4 values corresponds to the
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* parameters x1, y1, x2, and y2, and have the same
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* meaning as in cogl_rectangle().
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*
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* Since: 1.0
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*/
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void
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cogl_rectangles (const float *verts,
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unsigned int n_rects);
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/**
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* cogl_polygon:
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* @vertices: An array of #CoglTextureVertex structs
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* @n_vertices: The length of the vertices array
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* @use_color: %TRUE if the color member of #CoglTextureVertex should be used
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*
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* Draws a convex polygon using the current source material to fill / texture
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* with according to the texture coordinates passed.
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*
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* If @use_color is %TRUE then the color will be changed for each vertex using
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* the value specified in the color member of #CoglTextureVertex. This can be
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* used for example to make the texture fade out by setting the alpha value of
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* the color.
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*
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* All of the texture coordinates must be in the range [0,1] and repeating the
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* texture is not supported.
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*
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* Because of the way this function is implemented it will currently
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* only work if either the texture is not sliced or the backend is not
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* OpenGL ES and the minifying and magnifying functions are both set
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* to COGL_MATERIAL_FILTER_NEAREST.
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*
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* Since: 1.0
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*/
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void
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cogl_polygon (const CoglTextureVertex *vertices,
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unsigned int n_vertices,
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CoglBool use_color);
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COGL_END_DECLS
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#endif /* __COGL_PRIMITIVES_H */
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