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'''OpenGL extension IMG.framebuffer_downsample |
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This module customises the behaviour of the |
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OpenGL.raw.GLES2.IMG.framebuffer_downsample to provide a more |
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Python-friendly API |
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Overview (from the spec) |
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This extension introduces the ability to attach color buffers to a |
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framebuffer that are at a lower resolution than the framebuffer itself, with |
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the GPU automatically downsampling the color attachment to fit. |
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This can be useful for various post-process rendering techniques where it is |
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desirable to generate downsampled images in an efficient manner, or for a |
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lower resolution post-process technique. |
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This extension exposes at least a 2 x 2 downscale. Other downsampling modes |
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may be exposed on the system and this can be queried. |
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The official definition of this extension is available here: |
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http://www.opengl.org/registry/specs/IMG/framebuffer_downsample.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.GLES2 import _types, _glgets |
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from OpenGL.raw.GLES2.IMG.framebuffer_downsample import * |
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from OpenGL.raw.GLES2.IMG.framebuffer_downsample import _EXTENSION_NAME |
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def glInitFramebufferDownsampleIMG(): |
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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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