File size: 2,802 Bytes
910db9a | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 | import sys,os,math
import pygame as pg
from OpenGL import GL
sys.path.append("..")
sys.path.append("data")
import myframework
from vertices_perspective import VERTICES
class Shader(myframework.BaseShader):
def __init__(self,vertices,vert_file,frag_file):
myframework.BaseShader.__init__(self,vertices,vert_file,frag_file)
GL.glEnable(GL.GL_CULL_FACE)
GL.glCullFace(GL.GL_BACK)
GL.glFrontFace(GL.GL_CW)
def setup_uniforms(self):
self.offset_location = GL.glGetUniformLocation(self.shader,"offset")
self.perspective_matrix_unif = GL.glGetUniformLocation(self.shader,"perspectiveMatrix")
self.frustum_scale = 1.0
self.z_near,self.z_far = 0.5,3.0
self.create_matrix()
GL.glUseProgram(self.shader)
GL.glUniformMatrix4fv(self.perspective_matrix_unif,1,GL.GL_FALSE,self.the_matrix)
GL.glUseProgram(0)
def create_matrix(self):
self.the_matrix = [0.0 for i in range(16)]
self.the_matrix[0] = self.frustum_scale
self.the_matrix[5] = self.frustum_scale
self.the_matrix[10] = (self.z_far+self.z_near)/(self.z_near-self.z_far)
self.the_matrix[14] = (2*self.z_far*self.z_near)/(self.z_near-self.z_far)
self.the_matrix[11] = -1.0
def display(self):
GL.glClearColor(0,0,0,0)
GL.glClear(GL.GL_COLOR_BUFFER_BIT)
GL.glUseProgram(self.shader)
GL.glUniform2f(self.offset_location,0.5,0.5)
color_data = GL.GLvoidp((len(self.vertices)*self.size_float)/2)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, self.vbo)
GL.glEnableVertexAttribArray(0)
GL.glEnableVertexAttribArray(1)
GL.glVertexAttribPointer(0,self.vert_comp,GL.GL_FLOAT,GL.GL_FALSE,0,None)
GL.glVertexAttribPointer(1,self.vert_comp,GL.GL_FLOAT,GL.GL_FALSE,0,color_data)
GL.glDrawArrays(GL.GL_TRIANGLES,0,36)
GL.glDisableVertexAttribArray(0)
GL.glDisableVertexAttribArray(1)
GL.glUseProgram(0)
def main():
pg.init()
os.environ['SDL_VIDEO_CENTERED'] = '1'
SCREEN = pg.display.set_mode((500,500),pg.HWSURFACE|pg.OPENGL|pg.DOUBLEBUF|pg.RESIZABLE)
MyClock = pg.time.Clock()
MyGL = Shader(VERTICES[:],os.path.join("data","MatrixPerspective.vert"),os.path.join("data","StandardColors.frag"))
done = False
while not done:
for event in pg.event.get():
if event.type==pg.QUIT or (event.type==pg.KEYDOWN and event.key==pg.K_ESCAPE):
done = True
elif event.type == pg.KEYDOWN:
pass
elif event.type == pg.VIDEORESIZE:
MyGL.reshape(*event.size)
MyGL.display()
pg.display.flip()
MyClock.tick(60)
if __name__ == '__main__':
main()
pg.quit()
sys.exit()
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