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http://rubykaigi.org/2016/presentations/elct9620.html Learning GLSL (OpenGL Shader Language) is a little harder to me, but if I can create shader like Unreal Engine 4's material design tool? Let's play with Shader on OpenFrameworks. I using mruby and OpenFrameworks to create a scriptable GLSL generator to create shader. By the power of Ruby DSL, the shader generate becomes very fun and simplely. 蒼時弦也, @elct9620 A Web Developer focus on Interaction Design, and love Game, Animation and Comic. Current working on develop game and website.
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The video titled **"Play with GLSL on OpenFrameworks"**, presented by **Tong Shulian (elct9620)** at **RubyKaigi 2016**, revolves around utilizing GLSL (OpenGL Shader Language) with Ruby through OpenFrameworks for creative shader development. ### Key Points Covered: - **Introduction to GLSL and OpenFrameworks:** The speaker defines GLSL and explains its role in creating shaders that manipulate graphical rendering, especially in 3D modeling. OpenFrameworks serves as a toolkit for artists and designers seeking to create visual effects and interactive creations without extensive programming skills. - **Personal Background:** Tong shares their journey into programming, emphasizing its creative aspects, and their active participation in Taiwan's Ruby community. - **Demonstration of Shader Creation:** A practical demonstration showcases the creation of a **diffuse shader**. This shader visually represents how light interacts with surfaces, crucial for realistic 3D rendering. The demo included interactions such as mouse movements affecting light sources and rotating a Ruby logo model to observe light effects. - **Shader Conceptualization and Implementation:** The importance of shaders in computer graphics mining through points and pixel color manipulation is discussed. The speaker breaks down the components: vertex shaders for point transformations and fragment shaders for color determination. - **Building a Shader Generator in Ruby:** The core of the talk focuses on building a **Domain Specific Language (DSL)** for creating shaders using Ruby. Tong discusses: - Embedding Ruby into C++ classes to develop an efficient shader generator. - Converting Ruby syntax to shader code with typesafety and formatting. - Class structure and methods that facilitate dynamic shader creation. - **Real-time Code Modification:** Demonstrating the ease of modifying Ruby code in real-time, the speaker highlights how changes instantly impact the shader’s output, promoting an agile development environment. - **Call to Action:** Aiming to make shader programming accessible, Tong encourages wider community engagement with graphics programming. - **Resource Sharing:** The video concludes with the speaker sharing their GitHub repository hosting the shader generator code, enabling viewers to experiment and enhance their understanding further. ### Takeaway Conclusion: The talk highlights the blending of creative graphics programming with user-friendly coding practices through Ruby and OpenFrameworks, advocating for artist engagement in technology-driven creative fields.
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