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.TH "al_build_shader" "3" "" "Allegro reference manual" ""
.hy
.SH NAME
.PP
al_build_shader - Allegro 5 API
.SH SYNOPSIS
.IP
.nf
\f[C]
#include <allegro5/allegro.h>

bool al_build_shader(ALLEGRO_SHADER *shader)
\f[R]
.fi
.SH DESCRIPTION
.PP
This is required before the shader can be used with al_use_shader(3).
It should be called after successfully attaching the pixel and/or vertex
shaders with al_attach_shader_source(3) or
al_attach_shader_source_file(3).
.PP
Returns true on success and false on error, in which case the error log
is updated.
The error log can be retrieved with al_get_shader_log(3).
.RS
.PP
\f[I]Note:\f[R] If you are using the ALLEGRO_PROGRAMMABLE_PIPELINE flag,
then you must specify both a pixel and a vertex shader sources for
anything to be rendered.
.RE
.SH SINCE
.PP
5.1.6
.SH SEE ALSO
.PP
al_use_shader(3), al_get_shader_log(3)