Exemplo n.º 1
0
func initScene() {
	halfW, halfH := float32(Width)*0.5, float32(Height)*0.5

	Projection = mgl.Ortho2D(-halfW, halfW, -halfH, halfH).Mul4(
		mgl.Translate3D(-halfW, -halfH, 0))

	ModelView = mgl.Ident4f().Mul4(mgl.Scale3D(100, 100, 0))
	MVP <- Projection.Mul4(ModelView)

	gl.Disable(gl.DEPTH_TEST)
	gl.DepthMask(false)

	program := Program(FragmentShader(fsh), VertexShader(vsh))
	gl.UseProgram(uint(program))
	uMVP = gl.GetUniformLocation(program, "uMVP")
	attrPos = gl.GetAttribLocation(program, "pos")
	attrColor = gl.GetAttribLocation(program, "color")

	gl.EnableVertexAttribArray(uint(attrPos))
	gl.EnableVertexAttribArray(uint(attrColor))
	gl.ClearColor(0.0, 0.0, 0.0, 1.0)
	gl.VertexAttribPointer(uint(attrPos), 2, gl.FLOAT, false, 0, uintptr(gl.Void(&POSITION[0])))
	gl.VertexAttribPointer(uint(attrColor), 4, gl.FLOAT, false, 0, uintptr(gl.Void(&COLOR[0])))

}
Exemplo n.º 2
0
func draw(width, height int) {
	gl.Viewport(0, 0, width, height)
	gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
	gl.BindBuffer(gl.ARRAY_BUFFER, verticesArrayBuffer)
	gl.VertexAttribPointer(attrPos, 4, gl.FLOAT, false, 0, 0)
	gl.BindBuffer(gl.ARRAY_BUFFER, colorsArrayBuffer)
	gl.VertexAttribPointer(attrColor, 4, gl.FLOAT, false, 0, 0)
	gl.DrawArrays(gl.TRIANGLES, 0, 3)
	gl.Flush()
	gl.Finish()
}
Exemplo n.º 3
0
func draw(width, height int) {
	gl.Viewport(0, 0, width, height)
	gl.Clear(gl.COLOR_BUFFER_BIT)
	gl.BindBuffer(gl.ARRAY_BUFFER, verticesArrayBuffer)
	gl.VertexAttribPointer(attrPos, 4, gl.FLOAT, false, 6*4, 0)

	// bind texture - FIX size of vertex

	gl.VertexAttribPointer(attrTexIn, 2, gl.FLOAT, false, 6*4, 4*4)

	gl.ActiveTexture(gl.TEXTURE0)
	gl.BindTexture(gl.TEXTURE_2D, textureBuffer)
	gl.Uniform1i(unifTexture, 0)

	gl.DrawArrays(gl.TRIANGLE_FAN, 0, 4)
	gl.Flush()
	gl.Finish()
}