(Python OpenGL) "4" Uniform variable Pyopengl

1 __author__="WSX"2 ImportNumPy as NP3  fromOpengl.glutImport*4  fromOpengl.glImport*5 ImportcTYPES6 ImportMath7 Globalgscalelocation8Scale = 0.09 #Vertex shader SectionTenVertex_shader ="""    One #version A  - Layout (location = 0) in vec3 Position; -  the uniform float Gscale; - void Main () - { - gl_position = VEC4 (Gscale * position.x, Gscale * position.y, POSITION.Z, 1.0); +     } - """ + #Fragment Shader section, String type AFragment_shader ="""  at #version - Out vec4 fragcolor; - void Main () - { - Fragcolor = VEC4 (1.0, 0.0, 0.0, 1.0); -     } in """ - defCreate_shader (Shaderprogram, Shader_type, Source):#Create and add shaders (equivalent to Addshader) Shader_type to type toShaderobj = Glcreateshader (Shader_type)#Create a Shader object + Glshadersource (shaderobj, Source) -Glcompileshader (Shaderobj)#to compile theGlattachshader (Shaderprogram, Shaderobj)#associating a shader object to a program *  $ Panax Notoginseng defCompile_shader ():#Compiling shaders -     Globalgscalelocation theShader_program = Glcreateprogram ()#Create an empty shader program + Create_shader (Shader_program, Gl_vertex_shader, Vertex_shader) A Create_shader (Shader_program, Gl_fragment_shader, Fragment_shader) the Gllinkprogram (Shader_program) + Gluseprogram (Shader_program) -Gscalelocation = Glgetuniformlocation (Shader_program,"Gscale") $  $ defDraw (): -     Global Scale - glclear (gl_color_buffer_bit) theScale + = 0.001 - gluniform1f (gscalelocation, Math.sin (scale))Wuyi Glenablevertexattribarray (0) the Glbindbuffer (Gl_array_buffer, VBO) -Glvertexattribpointer (0, 3, gl_float, Gl_false, 0, None)#None of this here can be written as 0. WuGldrawarrays (gl_triangles, 0, 3) -Gldisablevertexattribarray (0)#parsing data such as a matrix containing position, color, and a variety of information About glutswapbuffers () $  -  - defCreatebuffer ():#creating a vertex buffer -     GlobalVBO#set to global variable AVertex = Np.array ([[ -1.0,-1.0,0.0], +[1.0,-1.0,0.0], the[0.0,1.0,0.0]],dtype="float32")#creating a vertex array -VBO = glgenbuffers (1)#Create Cache $Glbindbuffer (Gl_array_buffer, VBO)#binding theGlbufferdata (Gl_array_buffer, Vertex.nbytes, Vertex, Gl_static_draw)#input Data the  the  the definitializeglutcallbacks (): -Glutdisplayfunc (Draw)#callback function in Glutidlefunc (Draw) the  the defMain (): About Glutinit ([]) theGlutinitdisplaymode (glut_double | GLUT_RGBA)#display mode dual cache theGlutinitwindowposition (100, 100)#Window Position theGlutinitwindowsize (500, 500)#Window Size +Glutcreatewindow ("Sanjiao")#Create Window -Glutinitcontextversion (4,3)#for compatibility theGlutinitcontextprofile (Glut_core_profile)#for compatibilityBayi initializeglutcallbacks () theGlclearcolor (0.0, 0.0, 0.0, 0.0) the Createbuffer () - Compile_shader () - Glutmainloop () the  theMain ()

Effect: (Dynamic effect, added later)

(Python OpenGL) "4" Uniform variable Pyopengl