create GLSL programs from shader sources

pywfobj-view.py

@@ -8,6 +8,34 @@ import getopt
 from OpenGL.GL import *
 from OpenGL.GLU import *
 
+def make_program(v_fname, f_fname):
+    vfh = open(v_fname, 'r')
+    v_source = vfh.read()
+    vfh.close()
+    ffh = open(f_fname, 'r')
+    f_source = ffh.read()
+    ffh.close()
+
+    v_id = glCreateShader(GL_VERTEX_SHADER)
+    f_id = glCreateShader(GL_FRAGMENT_SHADER)
+
+    glShaderSource(v_id, [v_source])
+    glShaderSource(f_id, [f_source])
+
+    glCompileShader(v_id)
+    glCompileShader(f_id)
+
+    p_id = glCreateProgram()
+    glAttachShader(p_id, v_id)
+    glAttachShader(p_id, f_id)
+
+    glLinkProgram(p_id)
+
+    glDeleteShader(v_id)
+    glDeleteShader(f_id)
+
+    return p_id
+
 def main(argv):
     options, args = getopt.getopt(argv[1:], '')
     if len(args) == 0:
@@ -21,6 +49,16 @@ def main(argv):
     window.UseVerticalSync(True)
     window.SetActive(True)
 
+    plain_program = make_program('v_shader.glsl', 'f_shader.glsl')
+    tex_program = make_program('v_tex_shader.glsl', 'f_tex_shader.glsl')
+
+    if plain_program == 0:
+        sys.stderr.write('plain_program did not build successfully\n')
+        return 2
+    if tex_program == 0:
+        sys.sterr.write('tex_program did not build successfully\n')
+        return 2
+
     glClearDepth(1)
     glClearColor(0, 0, 0, 0)
     glEnable(GL_LIGHTING)