Category: Google+ Hangouts

Hangout Highlights – How Exponential Numbers Affects Custom Shader Effects

Last week on Corona Geek Hangout 153, Steven Johnson highlighted some of the issues related to using exponentially increasing numbers to create custom shader effects. We looked the visual representation of these “numerical issues” and talked about how to overcome hardware limitations to achieve device level precision. Here are clips from the Hangout.

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Corona Geek #153 – Custom Shader Math and 2D Shadow Effects

Today, Steven Johnson of led us through part 4 of our ongoing discussion on creating custom shader effects. During the Hangout Steven highlighted some of the exponential numerical issues surrounding shader math. We looked at a few visual representations of these “numerical issues” and talked about how to overcome hardware limitations to achieve device level precision.

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Hangout Highlights – Custom Vertex Shaders and Visualizing Polygon Points

Last week on Corona Geek Hangout 150, Steven Johnson introduced us to creating custom vertex shaders effects in Corona SDK. We also looked at some shader code examples to see the effects in action and we revealed a tip for using wireframe mode with display.setDrawMode to see the points of a polygon in a vertex shader example. Here are the clips from the Hangout.

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Corona Geek #150 – Custom Vertex Shader Effects and More Playground Examples

On today’s Corona Geek Hangout, Steven Johnson introduced us to vertex shaders as part 2 of our introduction the topic of creating and working with custom shader effects. We looked at several working shader playground examples and learned a tip for using wireframe mode with display.setDrawMode to see the points of a polygon in a vertex shader example.

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