Sha256: d52d030c1fff32338381b71297f25174aa706b171ea39757913fdd08e8c14c86
Contents?: true
Size: 1.39 KB
Versions: 19
Compression:
Stored size: 1.39 KB
Contents
require 'fiddle'
module Mittsu
class OpenGLShader
attr_reader :shader
def initialize(type, string)
@shader = glCreateShader(type)
# filename = type == GL_VERTEX_SHADER ? 'vertex.glsl' : 'fragment.glsl'
# File.write filename, string
string_pointer = Fiddle::Pointer[string]
string_length = Fiddle::Pointer[string.length]
glShaderSource(@shader, 1, string_pointer.ref, string_length.ref)
glCompileShader(@shader)
if !compile_status
puts "ERROR: Mittsu::OpenGLShader: Shader couldn't compile"
end
log_info = shader_info_log
if !log_info.empty?
puts "WARNING: Mittsu::OpenGLShader: glGetShaderInfoLog, #{log_info}"
puts add_line_numbers(string)
end
end
private
def compile_status
ptr = ' '*8
glGetShaderiv @shader, GL_COMPILE_STATUS, ptr
ptr.unpack('L')[0]
end
def shader_info_log
ptr = ' '*8
glGetShaderiv @shader, GL_INFO_LOG_LENGTH, ptr
length = ptr.unpack('L')[0]
if length > 0
log = ' '*length
glGetShaderInfoLog @shader, length, ptr, log
log.unpack("A#{length}")[0]
else
''
end
end
def add_line_numbers(string)
string.split("\n").each_with_index.map { |line, i|
line_number = "#{i + 1}".rjust(4, ' ')
"#{line_number}: #{line}"
}.join("\n")
end
end
end
Version data entries
19 entries across 19 versions & 1 rubygems