def initializeGL(self):
try:
GL.Init()
GL.Viewport(0, 0, context['width'], context['height'])
vert = GL.NewVertexShader('''
#version 330
in vec2 vert;
out vec2 tex_coord;
uniform vec2 scale;
uniform float rotation;
void main() {
mat2 rot = mat2(cos(rotation), sin(rotation), -sin(rotation), cos(rotation));
gl_Position = vec4((rot * vert) * scale, 0.0, 1.0);
tex_coord = vert;
}
''')
frag = GL.NewFragmentShader('''
#version 330
uniform sampler2D texture;
in vec2 tex_coord;
out vec4 color;
void main() {
color = vec4(texture2D(texture, tex_coord).rgb, 1.0);
}
''')
prog = GL.NewProgram([vert, frag])
context['rotation'] = prog['rotation']
vbo = GL.NewVertexBuffer(
struct.pack('6f', 1.0, 0.0, -0.5, 0.86, -0.5, -0.86))
context['vao'] = GL.NewVertexArray(prog, vbo, '2f', ['vert'])
GL.SetUniform(prog['scale'],
context['height'] / context['width'] * 0.75, 0.75)
tex = GL.NewTexture(256, 256,
Image.open('../DataFiles/Noise.jpg').tobytes())
GL.UseTexture(tex)
except GL.Error as error:
print(error)
exit(1)
in vec2 tex_coord;
out vec4 color;
void main() {
color = vec4(texture2D(texture, tex_coord).rgb, 1.0);
}
''')
prog = GL.NewProgram([vert, frag])
vbo = GL.NewVertexBuffer(struct.pack('6f', 1.0, 0.0, -0.5, 0.86, -0.5, -0.86))
vao = GL.NewVertexArray(prog, vbo, '2f', ['vert'])
GL.SetUniform(prog['scale'], height / width * 0.75, 0.75)
tex = GL.NewTexture(256, 256, Image.open('../DataFiles/Noise.jpg').tobytes())
GL.UseTexture(tex)
running = True
while running:
for event in pygame.event.get():
if event.type == pygame.QUIT:
running = False
GL.Clear(240, 240, 240)
GL.SetUniform(prog['rotation'], time.time() - start)
GL.RenderTriangles(vao, 3)
pygame.display.flip()
pygame.time.wait(10)
GL.DisableMultisample() GL.EnableBlend() GL.EnableCullFace() GL.EnableDepthTest() GL.EnableMultisample() GL.NewAdvancedVertexArray() GL.NewFragmentShader() GL.NewFramebuffer() GL.NewGeometryShader() GL.NewIndexBuffer() GL.NewProgram() GL.NewTessControlShader() GL.NewTessEvaluationShader() GL.NewTexture() GL.NewUniformBuffer() GL.NewVertexArray() GL.NewVertexBuffer() GL.NewVertexShader() GL.ReadPixel() GL.ReadPixels() GL.ReadDepthPixel() GL.ReadDepthPixels() GL.ReadStorageBuffer() GL.RenderLineLoop() GL.RenderLineStrip()
