func createProgram(shdrList []gl.Shader) gl.Program {
prog := gl.CreateProgram()
for _, shd := range shdrList {
prog.AttachShader(shd)
}
prog.BindFragDataLocation(0, "outputColor")
fmt.Println("frag data:", gl.GetError())
prog.Link()
status := prog.Get(gl.LINK_STATUS)
if status == gl.FALSE {
log := prog.GetInfoLog()
panic("linker: " + log)
}
for _, shd := range shdrList {
prog.DetachShader(shd)
}
return prog
}
func initGraphics() {
//opengl stuff
if gl.Init() != 0 {
panic("gl error")
}
lines = make([]line, 0, 10)
ents = make([]ent, 0, 10)
near = 1
far = 100
mu = sync.Mutex{}
fmt.Println("opengl stuff")
fmt.Println(gl.GetString(gl.VERSION))
cameraMatrix[0] = 0.001
cameraMatrix[5] = 0.001
cameraMatrix[10] = 1
cameraMatrix[15] = 1
OrthProj(true)
vertShdr := `
#version 150
uniform mat4 viewMatrix, projMatrix;
in vec4 Position;
void main()
{
gl_Position = projMatrix * viewMatrix * Position;
}`
fragShdr := `
#version 150
uniform vec4 baseColor;
out vec4 outputColor;
void main()
{
outputColor = baseColor;
}`
fmt.Println(gl.GetError())
fmt.Println("shader")
shdrList := []gl.Shader{
createShader(gl.VERTEX_SHADER, vertShdr),
createShader(gl.FRAGMENT_SHADER, fragShdr),
}
fmt.Println(gl.GetError())
fmt.Println("prog")
uniColor.prog = createProgram(shdrList)
fmt.Println("1", gl.GetError())
uniColor.vLoc = uniColor.prog.GetAttribLocation("Position")
uniColor.cLoc = uniColor.prog.GetUniformLocation("baseColor")
uniColor.viewLoc = uniColor.prog.GetUniformLocation("viewMatrix")
uniColor.projLoc = uniColor.prog.GetUniformLocation("projMatrix")
fmt.Println(".", gl.GetError())
for _, shd := range shdrList {
shd.Delete()
}
fmt.Println(".", gl.GetError())
fmt.Println("done")
gl.ClearColor(0.5, 0.5, 0.5, 0.5)
initMeshes()
fmt.Println("post init:", gl.GetError())
}