 | | Re: Bricksmith 2.4: Faster. Much Faster.
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(...) Hoo...that takes me back! :-) Doing the second shader was a bit of a blast from the past, actually - it's over 10 years since I last wrote assembler in anger! Alex (14 years ago, 16-Jun-10, to lugnet.cad.dev)
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| | Re: Bricksmith 2.4: Faster. Much Faster.
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(...) ... Wow, that is simple. It looks just like the description of the algorithm in the LDRAW specs. I haven't felt this old since manipulating the colormap for animation went outta style. :^) Thanks for sharing, Don (14 years ago, 16-Jun-10, to lugnet.cad.dev)
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| | Re: Bricksmith 2.4: Faster. Much Faster.
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(...) Actually, it's even simpler! This is the code for the geometry-shader: #version 120 #extension GL_NV_geometry_shader4 : enable varying out vec4 gl_TexCoord[]; float determinant(mat2 m) { return m[0][0] * m[1][1] - m[0][1] * m[1][0]; } void (...) (14 years ago, 16-Jun-10, to lugnet.cad.dev)
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| | Re: Bricksmith 2.4: Faster. Much Faster.
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(...) Ah ha! Yet another reason to read that vertex-shader book. So, are you suggesting running this algorithm on the graphics card (with counters for the vertices instead counting pixels in the stencil buffer) or perhaps some other algorithm? (...) (14 years ago, 16-Jun-10, to lugnet.cad.dev, FTX)
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| | Re: Bricksmith 2.4: Faster. Much Faster.
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(...) One drawback with VBOs is that - unlike displaylists - you can't stick arbitrary GL calls in them. I'm using lists because I need to be able to put matrix operations in them as well as geometry. (...) Change the cull-face orientation ;-) (...) (...) (14 years ago, 16-Jun-10, to lugnet.cad.dev.mac, FTX)
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