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'''OpenGL extension EXT.copy_image |
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This module customises the behaviour of the |
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OpenGL.raw.GLES2.EXT.copy_image 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 enables efficient image data transfer between image |
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objects (i.e. textures and renderbuffers) without the need to bind |
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the objects or otherwise configure the rendering pipeline. |
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This is accomplised by adding a new entry-point CopyImageSubData, |
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which takes a named source and destination. |
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CopyImageSubData does not perform general-purpose conversions |
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such as scaling, resizing, blending, color-space, or format |
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conversions. It should be considered to operate in a manner |
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similar to a CPU memcpy, but using the GPU for the copy. |
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CopyImageSubData supports copies between images with different |
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internal formats, if the formats are compatible as described in |
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this extension. |
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CopyImageSubData also supports copying between compressed and |
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uncompressed images if the compressed block / uncompressed texel |
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sizes are the same. |
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The official definition of this extension is available here: |
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http://www.opengl.org/registry/specs/EXT/copy_image.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.EXT.copy_image import * |
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from OpenGL.raw.GLES2.EXT.copy_image import _EXTENSION_NAME |
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def glInitCopyImageEXT(): |
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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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