Updated docs.

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Бранимир Караџић 2023-05-18 23:04:27 -07:00
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@ -136,6 +136,49 @@ Predefined Uniforms
For more info, see the `shader helper macros For more info, see the `shader helper macros
<https://github.com/bkaradzic/bgfx/blob/master/src/bgfx_shader.sh>`__. <https://github.com/bkaradzic/bgfx/blob/master/src/bgfx_shader.sh>`__.
Vertex Shader Attributes
~~~~~~~~~~~~~~~~~~~~~~~~
``$input`` tokens for vertex shader can be only following:
================ ===================
Attribute bgfx::Attrib::Enum
================ ===================
a_position Position
a_normal Normal
a_tangent Tangent
a_bitangent Bitangent
a_color0 Color0
a_color1 Color1
a_color2 Color2
a_color3 Color3
a_indices Indices
a_weight Weight
a_texcoord0 TexCoord0
a_texcoord1 TexCoord1
a_texcoord2 TexCoord2
a_texcoord3 TexCoord3
a_texcoord4 TexCoord4
a_texcoord5 TexCoord5
a_texcoord6 TexCoord6
a_texcoord7 TexCoord7
================ ===================
In ``varying.def.sc``, instance buffer input must use ``i_dataN`` as identifier where ``N`` is the index
of the attribute in the buffer. Type must be ``vec4``, and the stride must be multiple of 16.
The semantic must be ``TEXCOORDN`` with a decreasing index starting from ``TEXCOORD7``.
::
vec4 i_data0 : TEXCOORD7;
vec4 i_data1 : TEXCOORD6;
vec4 i_data2 : TEXCOORD5;
vec4 i_data3 : TEXCOORD4;
vec4 i_data4 : TEXCOORD3;
Options
~~~~~~~
Options: Options:
-h, --help Display this help and exit. -h, --help Display this help and exit.