Difference between revisions of "3D Fundamentals Tutorial 9"
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gfx.PutPixel( x,y,effect.ps( iLine ) ); | gfx.PutPixel( x,y,effect.ps( iLine ) ); | ||
</syntaxhighlight> | </syntaxhighlight> | ||
| − | * .. | + | * Changes to the <code>Pipeline</code> class [https://youtu.be/pef2405M-os?t=5m37s 5:37] |
| − | * ... [https://youtu.be/pef2405M-os?t= | + | :* The <code>Pipeline</code> object now holds an <code>Effect</code> object (which holds all shader data and methods) |
| + | :* Coding the <code>Effect</code> class [https://youtu.be/pef2405M-os?t=6m03s 6:03] | ||
| + | :* Coding the <code>PixelShader</code> class [https://youtu.be/pef2405M-os?t=6m22s 6:22] | ||
| + | * Putting it all together in a new <code>CubeSkinScene.h</code> class [https://youtu.be/pef2405M-os?t=7m26s 7:26] | ||
| + | :* The code now renders the same scene, but has become completely configurable | ||
| + | * Making a new <code>Effect</code>: Color Blending [https://youtu.be/pef2405M-os?t=8m31s 8:31] | ||
| + | |||
| + | * Making a new <code>Effect</code>: Solid Colors [https://youtu.be/pef2405M-os?t=14m47s 14:47] | ||
| + | |||
* ... [https://youtu.be/pef2405M-os?t=0m20s 0:20] | * ... [https://youtu.be/pef2405M-os?t=0m20s 0:20] | ||
* ... [https://youtu.be/pef2405M-os?t=0m20s 0:20] | * ... [https://youtu.be/pef2405M-os?t=0m20s 0:20] | ||
Revision as of 20:00, 1 June 2020
In this tutorial we incorporate our first shader stage into the 3D pipeline: the pixel shader stage. We also explore some basic example pixel shaders (more heavy-duty stuff to come later).
Video
The tutorial video is on YouTube here.
- What is a Pixel Shader and why is it used? 0:20
- We want to make color mapping of the triangles in the rendering pipeline configurable
- One way is to use templated function objects (functors) as "plug-in" code
- These functors determine the color of the pixel based on their input
- Refactoring of the
gfx.PutPixel(...)function inPipeline.h2:04
- This is where we are ultimately determining the color of the pixel
- Inside the PutPixel function, we want to call a shader object that defines the coloring behavior
- Implementation of the programmable pixel shader stage in the pipeline 3:11
- We template the pipeline class on an
<class Effect> - We will adjust the definition of the
Vertexclass depending on what effect we are using - We adjust
gfx.PutPixel(...)to take a pixel shader object, and call the function operator with the interpolated Vertex data:
gfx.PutPixel( x,y,effect.ps( iLine ) );
- We template the pipeline class on an
- Changes to the
Pipelineclass 5:37
- Putting it all together in a new
CubeSkinScene.hclass 7:26
- The code now renders the same scene, but has become completely configurable
- Making a new
Effect: Color Blending 8:31
- Making a new
Effect: Solid Colors 14:47
Downloads
The GitHub repository for the tutorial code is here.
