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'''OpenGL extension INTEL.conservative_rasterization |
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This module customises the behaviour of the |
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OpenGL.raw.GL.INTEL.conservative_rasterization to provide a more |
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Python-friendly API |
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Overview (from the spec) |
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Regular rasterization includes fragments with at least one |
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sample covered by a polygon. Conservative rasterization includes all |
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fragments that are at least partially covered by the polygon. |
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In some use cases, it is also important to know if a fragment is fully |
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covered by a polygon, i.e. if all parts of the fragment are within the |
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polygon. An application may, for example, want to process fully covered |
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fragments different from the "edge" pixels. This extension adds an option |
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for the fragment shader to receive this information via gl_SampleMaskIn[]. |
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This extension affects only polygons in FILL mode and specifically does not |
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imply any changes in processing of lines or points. |
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Conservative rasterization automatically disables polygon antialiasing |
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rasterization if enabled by POLYGON_SMOOTH. |
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The official definition of this extension is available here: |
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http://www.opengl.org/registry/specs/INTEL/conservative_rasterization.txt |
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''' |
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from OpenGL import platform, constant, arrays |
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from OpenGL import extensions, wrapper |
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import ctypes |
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from OpenGL.raw.GL import _types, _glgets |
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from OpenGL.raw.GL.INTEL.conservative_rasterization import * |
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from OpenGL.raw.GL.INTEL.conservative_rasterization import _EXTENSION_NAME |
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def glInitConservativeRasterizationINTEL(): |
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'''Return boolean indicating whether this extension is available''' |
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from OpenGL import extensions |
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return extensions.hasGLExtension( _EXTENSION_NAME ) |
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