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GLSL ES 300 #4

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mattdesl opened this issue Jun 24, 2015 · 0 comments
Open

GLSL ES 300 #4

mattdesl opened this issue Jun 24, 2015 · 0 comments

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@mattdesl
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Changes at a glance:
http://www.shaderific.com/blog/2014/3/13/tutorial-how-to-update-a-shader-for-opengl-es-30

  • #version 300 es appears at top
  • texture2D -> texture
  • attribute -> in
  • gl_FragCoord - custom out
  • varying -> in / out
  • some more constants:
    • gl_VertexID, gl_InstanceID, 'gl_MaxVertexAttribs', 'gl_MaxVertexUniformVectors', 'gl_MaxVertexOutputVectors', 'gl_MaxFragmentInputVectors', 'gl_MaxVertexTextureImageUnits', 'gl_MaxCombinedTextureImageUnits', 'gl_MaxTextureImageUnits', 'gl_MaxFragmentUniformVectors', 'gl_MaxDrawBuffers', 'gl_MinProgramTexelOffset', 'gl_MaxProgramTexelOffset',
  • new functions like textureSize, inversesqrt, transpose, inverse, textureProj
  • new literals like sampler2DArray

Reference:
https://www.khronos.org/registry/gles/specs/3.0/GLSL_ES_Specification_3.00.3.pdf
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@mattdesl