It is possible to retrieve the bitmap data HTML Canvas 2D element, is it also possible to access the rendered content of a Canvas 3D / WebGL element as bitmap data?
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It is possible to retrieve the bitmap data HTML Canvas 2D element, is it also possible to access the rendered content of a Canvas 3D / WebGL element as bitmap data?
The signature of WebGL’s readPixels has changed in a later draft.
Instead of returning a new array with the pixel data everytime, you pass an array to fill as last argument :
void readPixels(GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, ArrayBufferView pixels)
This allows to reuse the same array for multiple readPixels operations.