A question, how can your code works???? It looks like a total mess here. Here:
# # Copyright Tristam Macdonald 2008. # # Distributed under the Boost Software License, Version 1.0 # (see http://www.boost.org/LICENSE_1_0.txt) # from pyglet.gl import * class Shader: # vert, frag and geom take arrays of source strings # the arrays will be concattenated into one string by OpenGL def __init__(self, vert = [], frag = [], geom = []): # create the program handle self.handle = glCreateProgram() # we are not linked yet self.linked = False # create the vertex shader self.createShader(vert, GL_VERTEX_SHADER) # create the fragment shader self.createShader(frag, GL_FRAGMENT_SHADER) # the geometry shader will be the same, once pyglet supports the extension # self.createShader(frag, GL_GEOMETRY_SHADER_EXT) # attempt to link the program self.link() def createShader(self, strings, type): count = len(strings) # if we have no source code, ignore this shader if count < 1: return # create the shader handle shader = glCreateShader(type) # convert the source strings into a ctypes pointer-to-char array, and upload them # this is deep, dark, dangerous black magick - don't try stuff like this at home! src = (c_char_p * count)(*strings) glShaderSource(shader, count, cast(pointer(src), POINTER(POINTER(c_char))), None) # compile the shader glCompileShader(shader) temp = c_int(0) # retrieve the compile status glGetShaderiv(shader, GL_COMPILE_STATUS, byref(temp)) # if compilation failed, print the log if not temp: # retrieve the log length glGetShaderiv(shader, GL_INFO_LOG_LENGTH, byref(temp)) # create a buffer for the log buffer = create_string_buffer(temp.value) # retrieve the log text glGetShaderInfoLog(shader, temp, None, buffer) # print the log to the console print buffer.value else: # all is well, so attach the shader to the program glAttachShader(self.handle, shader); def link(self): # link the program glLinkProgram(self.handle) temp = c_int(0) # retrieve the link status glGetProgramiv(self.handle, GL_LINK_STATUS, byref(temp)) # if linking failed, print the log if not temp: # retrieve the log length glGetProgramiv(self.handle, GL_INFO_LOG_LENGTH, byref(temp)) # create a buffer for the log buffer = create_string_buffer(temp.value) # retrieve the log text glGetProgramInfoLog(self.handle, temp, None, buffer) # print the log to the console print buffer.value else: # all is well, so we are linked self.linked = True def bind(self): # bind the program glUseProgram(self.handle) def unbind(self): # unbind whatever program is currently bound - not necessarily this program, # so this should probably be a class method instead glUseProgram(0) # upload a floating point uniform # this program must be currently bound def uniformf(self, name, *vals): # check there are 1-4 values if len(vals) in range(1, 5): # select the correct function { 1 : glUniform1f, 2 : glUniform2f, 3 : glUniform3f, 4 : glUniform4f # retrieve the uniform location, and set }[len(vals)](glGetUniformLocation(self.handle, name), *vals) # upload an integer uniform # this program must be currently bound def uniformi(self, name, *vals): # check there are 1-4 values if len(vals) in range(1, 5): # select the correct function { 1 : glUniform1i, 2 : glUniform2i, 3 : glUniform3i, 4 : glUniform4i # retrieve the uniform location, and set }[len(vals)](glGetUniformLocation(self.handle, name), *vals) # upload a uniform matrix # works with matrices stored as lists, # as well as euclid matrices def uniform_matrixf(self, name, mat): # obtian the uniform location loc = glGetUniformLocation(self.Handle, name) # uplaod the 4x4 floating point matrix glUniformMatrix4fv(loc, 1, False, (c_float * 16)(*mat)) [/sourcecode] Note that there isn't anything restricting this class to use with Pyglet - a simple change to the import statement should allow it to be used with any setup based on OpenGL/ctypes. I hope someone finds this useful, and I would love to hear if you use it to make anything cool/interesting -- You received this message because you are subscribed to the Google Groups "pyglet-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/pyglet-users. For more options, visit https://groups.google.com/d/optout.
