Updating the Alamo church facade

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Alamo Facade (see Gallery for full size)

Seven years ago I posted a video of my first Alamo 3D model on YouTube.  Since then, I have been gradually improving my technical abilities and tools to create a more photo-realistic result.

The render above, represents my latest work: reworking the Alamo church facade.  For comparison, here is a render of my model in 2009.

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2009 Model

Here is a summary of the improvements:

  • Using a physically accurate render engine with global illumination (Blender Cycles) produces realistic lighting.
  • The lighting source is from an HDRI image (Hyperfocal Design).  This is another important contribution to realistic lighting and background.
  • Color grading.  The rendered result was corrected to improve color balance.
  • More geometry.  The new model has a higher level of detail.  For example the spirals in the pillars.
  • Higher texel density.  The size of the textures is sufficient for a sharp image of objects that are 1-2 meters from the camera.  Also, the texel density is more uniform across objects in the scene.
  • Bump and normal map textures add detail without increased geometry.  For example, the decorations on the doorway.
  • Physically based material workflow.  Materials were created using Allegorithmic Substance Designer and Painter.
  • Hand generated textures.  The stonework textures were created by hand using a workflow involving Photoshop, Inkscape and Substance Painter. This allowed the addition of realistic weather, dirt and damage effects.

Not visible in this render are the other improvements like the complete modeling of Bexar and more realistic landscape around the San Antonio River.

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