GL

From 37a92b86d13e89d0dcec92be6d23ceced29dbc36 Mon Sep 17 00:00:00 2001 From: scuri Date: Mon, 21 Jun 2010 22:55:10 +0000 Subject: *** empty log message *** --- html/en/drv/gl.html | 108 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 108 insertions(+) create mode 100644 html/en/drv/gl.html (limited to 'html') diff --git a/html/en/drv/gl.html b/html/en/drv/gl.html new file mode 100644 index 0000000..2b94b10 --- /dev/null +++ b/html/en/drv/gl.html @@ -0,0 +1,108 @@ + + + + + + +GL + + + + + + +

GL Driver

+ +

This driver represents a basic driver for all system-dependent drivers + implemented in the X-Windows system using the + OpenGL SDK. The implementation uses the OpenGL, GLU and GLX API functions. + For the font support, this driver uses the + FTGL + API functions, which it was written against the + Free Type library.

+ +

Behavior of Functions

Control

+ Play: does nothing, returns + CD_ERROR.

Coordinate System and Clipping

+ + UpdateYAxis: does nothing.
+ Clipping: only support rectangular areas.
+ Complex Regions: not supported.

Primitives

+ Begin: CD_PATH + is simulated.
Floating point primitives are supported.

Client Images

Images are bitmaps, and cannot be directly rotated or scaled.

Attributes

+ + LineStyle: in + CD_CUSTOM, style patterns more than 16 bits are not supported.
+ + LineCap: does nothing.
+ + LineJoin: does nothing.
+ Stipple: + does nothing. There is no support for patterns more than 16 bits.
+ Pattern: + does nothing.
+ + FillMode: does nothing.
+ + NativeFont: also accepts the + X-Windows font string format.
+ Font: "Courier" is mapped to + "Courier New", "Helvetica" is mapped to "Arial", and "Times" is mapped to + "Times New Roman". Underline and Strikeout are NOT supported.

Colors

+ + Palette: does nothing.

Exclusive Attributes

+ +

"ROTATE": allows the usage of 1 + angle and 1 coordinate (x, y), that define a global rotation transformation + centered in the specified coordinate. Use 1 real and 2 integer values inside a + string ("%g %d %d" = angle x y).

+ +

"GLVERSION": returns a string with + the OpenGL version or release number. It is empty if the OpenGL is not available.

+ + + + -- cgit v1.2.3