diff options
Diffstat (limited to 'mesalib/docs/MESA_window_pos.spec')
-rw-r--r-- | mesalib/docs/MESA_window_pos.spec | 252 |
1 files changed, 126 insertions, 126 deletions
diff --git a/mesalib/docs/MESA_window_pos.spec b/mesalib/docs/MESA_window_pos.spec index 4d01f1814..ac3e5b1b3 100644 --- a/mesalib/docs/MESA_window_pos.spec +++ b/mesalib/docs/MESA_window_pos.spec @@ -1,126 +1,126 @@ -Name - - MESA_window_pos - -Name Strings - - GL_MESA_window_pos - -Contact - - Brian Paul, brian.paul 'at' tungstengraphics.com - -Status - - Shipping (since Mesa version 1.2.8) - -Version - - -Number - - 197 - -Dependencies - - OpenGL 1.0 is required. - The extension is written against the OpenGL 1.2 Specification - -Overview - - In order to set the current raster position to a specific window - coordinate with the RasterPos command, the modelview matrix, projection - matrix and viewport must be set very carefully. Furthermore, if the - desired window coordinate is outside of the window's bounds one must - rely on a subtle side-effect of the Bitmap command in order to circumvent - frustum clipping. - - This extension provides a set of functions to directly set the - current raster position, bypassing the modelview matrix, the - projection matrix and the viewport to window mapping. Furthermore, - clip testing is not performed. - - This greatly simplifies the process of setting the current raster - position to a specific window coordinate prior to calling DrawPixels, - CopyPixels or Bitmap. - -New Procedures and Functions - - void WindowPos2dMESA(double x, double y) - void WindowPos2fMESA(float x, float y) - void WindowPos2iMESA(int x, int y) - void WindowPos2sMESA(short x, short y) - void WindowPos2ivMESA(const int *p) - void WindowPos2svMESA(const short *p) - void WindowPos2fvMESA(const float *p) - void WindowPos2dvMESA(const double *p) - void WindowPos3iMESA(int x, int y, int z) - void WindowPos3sMESA(short x, short y, short z) - void WindowPos3fMESA(float x, float y, float z) - void WindowPos3dMESA(double x, double y, double z) - void WindowPos3ivMESA(const int *p) - void WindowPos3svMESA(const short *p) - void WindowPos3fvMESA(const float *p) - void WindowPos3dvMESA(const double *p) - void WindowPos4iMESA(int x, int y, int z, int w) - void WindowPos4sMESA(short x, short y, short z, short w) - void WindowPos4fMESA(float x, float y, float z, float w) - void WindowPos4dMESA(double x, double y, double z, double ) - void WindowPos4ivMESA(const int *p) - void WindowPos4svMESA(const short *p) - void WindowPos4fvMESA(const float *p) - void WindowPos4dvMESA(const double *p) - -New Tokens - - none - -Additions to Chapter 2 of the OpenGL 1.2 Specification (OpenGL Operation) - - - (2.12, p. 41) Insert after third paragraph: - - Alternately, the current raster position may be set by one of the - WindowPosMESA commands: - - void WindowPos{234}{sidf}MESA( T coords ); - void WindowPos{234}{sidf}vMESA( T coords ); - - WindosPos4MESA takes four values indicating x, y, z, and w. - WindowPos3MESA (or WindowPos2MESA) is analaguos, but sets only - x, y, and z with w implicitly set to 1 (or only x and y with z - implicititly set to 0 and w implicitly set to 1). - - WindowPosMESA operates like RasterPos except that the current modelview - matrix, projection matrix and viewport parameters are ignored and the - clip test operation always passes. The current raster position values - are directly set to the parameters passed to WindowPosMESA. The current - color, color index and texture coordinate update the current raster - position's associated data. - -Additions to the AGL/GLX/WGL Specifications - - None - -GLX Protocol - - Not specified at this time. However, a protocol message very similar - to that of RasterPos is expected. - -Errors - - INVALID_OPERATION is generated if WindowPosMESA is called betweeen - Begin and End. - -New State - - None. - -New Implementation Dependent State - - None. - -Revision History - - * Revision 1.0 - Initial specification - * Revision 1.1 - Minor clean-up (7 Jan 2000, Brian Paul) - +Name
+
+ MESA_window_pos
+
+Name Strings
+
+ GL_MESA_window_pos
+
+Contact
+
+ Brian Paul, brian.paul 'at' tungstengraphics.com
+
+Status
+
+ Shipping (since Mesa version 1.2.8)
+
+Version
+
+
+Number
+
+ 197
+
+Dependencies
+
+ OpenGL 1.0 is required.
+ The extension is written against the OpenGL 1.2 Specification
+
+Overview
+
+ In order to set the current raster position to a specific window
+ coordinate with the RasterPos command, the modelview matrix, projection
+ matrix and viewport must be set very carefully. Furthermore, if the
+ desired window coordinate is outside of the window's bounds one must
+ rely on a subtle side-effect of the Bitmap command in order to circumvent
+ frustum clipping.
+
+ This extension provides a set of functions to directly set the
+ current raster position, bypassing the modelview matrix, the
+ projection matrix and the viewport to window mapping. Furthermore,
+ clip testing is not performed.
+
+ This greatly simplifies the process of setting the current raster
+ position to a specific window coordinate prior to calling DrawPixels,
+ CopyPixels or Bitmap.
+
+New Procedures and Functions
+
+ void WindowPos2dMESA(double x, double y)
+ void WindowPos2fMESA(float x, float y)
+ void WindowPos2iMESA(int x, int y)
+ void WindowPos2sMESA(short x, short y)
+ void WindowPos2ivMESA(const int *p)
+ void WindowPos2svMESA(const short *p)
+ void WindowPos2fvMESA(const float *p)
+ void WindowPos2dvMESA(const double *p)
+ void WindowPos3iMESA(int x, int y, int z)
+ void WindowPos3sMESA(short x, short y, short z)
+ void WindowPos3fMESA(float x, float y, float z)
+ void WindowPos3dMESA(double x, double y, double z)
+ void WindowPos3ivMESA(const int *p)
+ void WindowPos3svMESA(const short *p)
+ void WindowPos3fvMESA(const float *p)
+ void WindowPos3dvMESA(const double *p)
+ void WindowPos4iMESA(int x, int y, int z, int w)
+ void WindowPos4sMESA(short x, short y, short z, short w)
+ void WindowPos4fMESA(float x, float y, float z, float w)
+ void WindowPos4dMESA(double x, double y, double z, double )
+ void WindowPos4ivMESA(const int *p)
+ void WindowPos4svMESA(const short *p)
+ void WindowPos4fvMESA(const float *p)
+ void WindowPos4dvMESA(const double *p)
+
+New Tokens
+
+ none
+
+Additions to Chapter 2 of the OpenGL 1.2 Specification (OpenGL Operation)
+
+ - (2.12, p. 41) Insert after third paragraph:
+
+ Alternately, the current raster position may be set by one of the
+ WindowPosMESA commands:
+
+ void WindowPos{234}{sidf}MESA( T coords );
+ void WindowPos{234}{sidf}vMESA( T coords );
+
+ WindosPos4MESA takes four values indicating x, y, z, and w.
+ WindowPos3MESA (or WindowPos2MESA) is analaguos, but sets only
+ x, y, and z with w implicitly set to 1 (or only x and y with z
+ implicitly set to 0 and w implicitly set to 1).
+
+ WindowPosMESA operates like RasterPos except that the current modelview
+ matrix, projection matrix and viewport parameters are ignored and the
+ clip test operation always passes. The current raster position values
+ are directly set to the parameters passed to WindowPosMESA. The current
+ color, color index and texture coordinate update the current raster
+ position's associated data.
+
+Additions to the AGL/GLX/WGL Specifications
+
+ None
+
+GLX Protocol
+
+ Not specified at this time. However, a protocol message very similar
+ to that of RasterPos is expected.
+
+Errors
+
+ INVALID_OPERATION is generated if WindowPosMESA is called between
+ Begin and End.
+
+New State
+
+ None.
+
+New Implementation Dependent State
+
+ None.
+
+Revision History
+
+ * Revision 1.0 - Initial specification
+ * Revision 1.1 - Minor clean-up (7 Jan 2000, Brian Paul)
+
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