74 lines
3 KiB
Python
74 lines
3 KiB
Python
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from OpenGL.GL import *
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import numpy as np
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from OpenGL.GL.ARB.vertex_array_object import glDeleteVertexArrays
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from OpenGL.GL.framebufferobjects import glBindRenderbuffer
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from OpenGL.GLUT import *
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import OpenGL.GLUT.freeglut
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from OpenGL.GLU import *
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from OpenGL.GL import *
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from ctypes import sizeof, c_float, c_void_p, c_uint
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from MatrixStuff.Transformations import *
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class Light:
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programId = {}
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depthshaderId = -1
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def getDepthProgram(self,vertexshader=-1,geometryshader=-1):
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if ((vertexshader,geometryshader) not in self.programId.keys() and vertexshader != -1 and geometryshader != -1):
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if self.depthshaderId == -1:
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with open('./Lights/depthfragment.glsl', 'r') as f:
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fragment_shader_string = f.read()
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fragment_shader_id = glCreateShader(GL_FRAGMENT_SHADER)
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glShaderSource(fragment_shader_id, fragment_shader_string)
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glCompileShader(fragment_shader_id)
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if glGetShaderiv(fragment_shader_id, GL_COMPILE_STATUS) != GL_TRUE:
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raise RuntimeError(glGetShaderInfoLog(fragment_shader_id))
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program_id = glCreateProgram()
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glAttachShader(program_id, vertexshader)
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glAttachShader(program_id, geometryshader)
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glAttachShader(program_id, fragment_shader_id)
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glLinkProgram(program_id)
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self.programId[(vertexshader, geometryshader)] = program_id
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return program_id
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else:
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if (vertexshader,geometryshader) not in self.programId.keys():
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return -1
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return self.programId[(vertexshader,geometryshader)]
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def __init__(self):
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self.ModelviewProjectionMatrix = np.identity(4)
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self.FramebufferId = -1
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self.DepthBuffer = -1
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def prepareForDepthMapping(self):
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new = False
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if self.FramebufferId == -1:
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self.FramebufferId = glGenFramebuffers(1)
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new = True
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glClearColor(1.0,1.0,1.0,1.0)
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glBindFramebuffer(GL_FRAMEBUFFER,self.FramebufferId)
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glCullFace(GL_FRONT)
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glViewport(0, 0, 512, 512)
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if new:
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if self.DepthBuffer == -1:
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self.DepthBuffer = glGenTextures(1)
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glBindTexture(GL_TEXTURE_2D, self.DepthBuffer)
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glTexImage2D(GL_TEXTURE_2D, 0,GL_DEPTH_COMPONENT, 512, 512, 0,GL_DEPTH_COMPONENT, GL_FLOAT, None)
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST)
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST)
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glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT,GL_TEXTURE_2D, self.FramebufferId, 0)
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DrawBuffers = [GL_NONE]
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glDrawBuffers(DrawBuffers)
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if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE):
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return False
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def finishDepthMapping(self):
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glCullFace(GL_BACK)
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DrawBuffers = [GL_COLOR_ATTACHMENT0]
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glDrawBuffers(DrawBuffers)
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glClearColor(0.0, 0.0, 0.0, 1.0)
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glBindFramebuffer(GL_FRAMEBUFFER,0)
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