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| Name |
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| SUN_convolution_border_modes |
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| Name Strings |
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| GL_SUN_convolution_border_modes |
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| Contact |
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| Ron Bielaski, Sun (Ron.Bielaski 'at' eng.sun.com) |
| Jack Middleton, Sun (Jack.Middleton 'at' eng.sun.com) |
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| Status |
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| Shipping |
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| Version |
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| $Date: 1999/12/28 01:40:37 $ $Revision: 1.3 $ |
| SUN Date: 1999/06/26 05:05:47 Revision: 1.3 |
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| Number |
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| 182 |
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| Dependencies |
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| EXT_convolution is required |
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| Overview |
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| This extension provides an additional border mode for the |
| EXT_convolution extension. |
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| New Procedures and Functions |
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| None |
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| New Tokens |
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| Accepted by the <param> parameter of ConvolutionParameteriEXT, |
| and ConvolutionParameterfEXT, and by the <params> parameter of |
| ConvolutionParameterivEXT and ConvolutionParameterfvEXT, when the |
| <pname> parameter is CONVOLUTION_BORDER_MODE_EXT: |
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| WRAP_BORDER_SUN 0x81D4 |
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| Additions to Chapter 2 of the 1.2 Specification (OpenGL Operation) |
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| None |
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| Additions to Chapter 3 of the 1.2 Specification (Rasterization) |
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| The description of the convolution border mode is replaced with |
| the following: |
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| The convolution border mode for a specific convolution filter is |
| specified using ConvolutionParameteriEXT with the <target> |
| parameter set to the name of the filter, the <pname> parameter |
| set to CONVOLUTION_BORDER_MODE_EXT, and <param> set to one of |
| REDUCE_EXT, IGNORE_BORDER_HP, CONSTANT_BORDER_HP, |
| WRAP_BORDER_SUN, or REPLICATE_BORDER_HP. |
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| If the convolution border mode is WRAP_BORDER_SUN, the output image |
| has the same dimensions as the source image, and the source image is |
| assumed to be continuously wrapped in both x and y directions. |
| Therefore, source image pixels in the Cw columns on the right edge |
| are used in the convolution computation for the Cw columns on the |
| left edge of the image, and vice versa. Similarly, source image |
| pixels in the Ch rows on the top of the image are used in the |
| convolution computation for the Ch rows on the bottom of the |
| image and vice versa. |
| |
| Additions to Chapter 4 of the 1.2 Specification (Per-Fragment Operations |
| and the Frame buffer) |
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| None |
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| Additions to Chapter 5 of the 1.2 Specification (Special Functions) |
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| None |
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| Additions to Chapter 6 of the 1.2 Specification (State and State Requests) |
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| None |
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| Additions to the GLX / WGL / AGL Specifications |
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| None |
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| GLX Protocol |
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| No new protocol is needed. |
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| Dependencies on EXT_convolution |
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| EXT_convolution is required. This extension adds capability to |
| the convolution operations defined in that extension. |
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| Errors |
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| INVALID_ENUM is generated if ConvolutionParameterivEXT or |
| ConvolutionParameterfvEXT parameter <pname> is not |
| CONVOLUTION_FILTER_SCALE_EXT, CONVOLUTION_FILTER_BIAS_EXT, |
| CONVOLUTION_BORDER_MODE_EXT, or CONVOLUTION_BORDER_COLOR_HP. |
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| INVALID_ENUM is generated if ConvolutionParameteriEXT, |
| ConvolutionParameterfEXT, ConvolutionParameterivEXT, or |
| ConvolutionParameterfvEXT parameter <pname> is |
| CONVOLUTION_BORDER_MODE_EXT and parameter <params> is |
| not one of REDUCE_EXT, IGNORE_BORDER_HP, CONSTANT_BORDER_HP, |
| WRAP_BORDER_SUN, or REPLICATE_BORDER_HP. |
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| INVALID_ENUM is generated if GetConvolutionParameterivEXT or |
| GetConvolutionParameterfvEXT parameter <pname> is not |
| CONVOLUTION_FILTER_SCALE_EXT, CONVOLUTION_FILTER_BIAS_EXT, |
| CONVOLUTION_BORDER_MODE_EXT, CONVOLUTION_FORMAT_EXT, |
| CONVOLUTION_WIDTH_EXT, CONVOLUTION_HEIGHT_EXT, |
| MAX_CONVOLUTION_WIDTH_EXT, MAX_CONVOLUTION_HEIGHT_EXT, |
| or CONVOLUTION_BORDER_COLOR_HP. |
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| New State |
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| None |
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| New Implementation Dependent State |
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| None |
| Revision History |
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| 6/24/99 - Added fields from the new extension template. |
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