Stuff draws correctly with different sizes and colors. Trying to pull out the draw() function failed.
parent
ccc61e9a07
commit
286efb85c5
159
main.go
159
main.go
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@ -57,8 +57,8 @@ func run() {
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// Capture the mouse for movement
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sdl.SetRelativeMouseMode(true)
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// Init and configure global settings
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gl.Init()
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gl.ClearColor(0.0, 0.0, 0.0, 1.0)
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gameWindow, err := game_window.NewGameWindow(GameTitle)
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if err != nil {
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@ -66,24 +66,23 @@ func run() {
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}
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defer gameWindow.Destroy()
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camera := gl_objects.NewCamera()
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camera := gl_objects.NewCamera(gameWindow.GLProgram)
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camera.Position = mgl32.Vec3{0, 0, 10}
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camera.Draw(gameWindow.GLProgram)
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modelUniform := gl.GetUniformLocation(gameWindow.GLProgram, gl.Str("model\x00"))
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//gl.BindFragDataLocation(gameWindow.GLProgram, 0, gl.Str("outputColor\x00"))
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texture, err := gl_helpers.NewTexture("square.png")
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textureId, err := gl_helpers.NewTexture("square.png")
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if err != nil {
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log.Fatal(err)
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}
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box := gl_objects.NewBox(6.0, 4.0, 2.0, mgl32.Vec3{0, 0, 0}, mgl32.Vec3{1, 1, 1}, true)
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vertices := box.GetVertexArray()
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log.Println(vertices)
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box := gl_objects.NewBox(6.0, 4.0, 2.0, mgl32.Vec3{0, 0, 0}, mgl32.Vec3{1, 0, 0})
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//box.GLInit(gameWindow.GLProgram)
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//box.SetTexture(texture)
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/*
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*/
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vertexArray := box.VertexArray
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var vao uint32
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gl.GenVertexArrays(1, &vao)
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gl.BindVertexArray(vao)
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@ -91,28 +90,32 @@ func run() {
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var vbo uint32
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gl.GenBuffers(1, &vbo)
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gl.BindBuffer(gl.ARRAY_BUFFER, vbo)
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gl.BufferData(gl.ARRAY_BUFFER, len(vertices)*4, gl.Ptr(vertices), gl.STATIC_DRAW)
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gl.BufferData(gl.ARRAY_BUFFER, len(vertexArray)*4, gl.Ptr(vertexArray), gl.STATIC_DRAW)
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var sizeofFloat int32 = 4
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stride := gl_objects.VertexSize * sizeofFloat
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vertAttrib := uint32(gl.GetAttribLocation(gameWindow.GLProgram, gl.Str("vert\x00")))
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gl.EnableVertexAttribArray(vertAttrib)
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gl.VertexAttribPointerWithOffset(vertAttrib, 3, gl.FLOAT, false, 8*4, 0)
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gl.VertexAttribPointerWithOffset(vertAttrib, 3, gl.FLOAT, false, stride, uintptr(0))
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vertColorAttrib := uint32(gl.GetAttribLocation(gameWindow.GLProgram, gl.Str("vertColor\x00")))
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gl.EnableVertexAttribArray(vertColorAttrib)
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gl.VertexAttribPointerWithOffset(vertColorAttrib, 3, gl.FLOAT, false, 8*4, 3*4)
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gl.VertexAttribPointerWithOffset(vertColorAttrib, 3, gl.FLOAT, false, stride, uintptr(3*sizeofFloat))
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texCoordAttrib := uint32(gl.GetAttribLocation(gameWindow.GLProgram, gl.Str("vertTexCoord\x00")))
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gl.EnableVertexAttribArray(texCoordAttrib)
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gl.VertexAttribPointerWithOffset(texCoordAttrib, 2, gl.FLOAT, false, 8*4, 6*4)
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// Configure global settings
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gl.Enable(gl.DEPTH_TEST)
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gl.DepthFunc(gl.LESS)
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gl.ClearColor(0.0, 0.0, 0.0, 1.0)
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gl.VertexAttribPointerWithOffset(texCoordAttrib, 2, gl.FLOAT, false, stride, uintptr(6*sizeofFloat))
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/*
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*/
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model := mgl32.Ident4()
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gl.UniformMatrix4fv(modelUniform, 1, false, &model[0])
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// Global options after setup is all done
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gl.ClearColor(0.0, 0.0, 0.0, 1.0)
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gl.Enable(gl.DEPTH_TEST)
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gl.DepthFunc(gl.LESS)
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running := true
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var angle float32 = 0.0
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for running {
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@ -120,21 +123,27 @@ func run() {
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model = mgl32.Ident4()
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camera.Update()
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camera.Draw(gameWindow.GLProgram)
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camera.Draw()
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angle += 0.01
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// TODO can rotate each object separately
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angle += 0.00
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model = mgl32.HomogRotate3D(angle, mgl32.Vec3{0, 1, 0})
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gl.UniformMatrix4fv(modelUniform, 1, false, &model[0])
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// I think this is what I might need to abstract out into each Draw()
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//box.Update()
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//box.Draw()
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/*
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*/
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gl.BindVertexArray(vao)
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gl.ActiveTexture(gl.TEXTURE0)
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gl.BindTexture(gl.TEXTURE_2D, texture)
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gl.BindTexture(gl.TEXTURE_2D, textureId)
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gl.DrawArrays(gl.TRIANGLES, 0, 6*2*3) // 6 sides, 2 triangles, 3 points each
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// end Draw()
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/*
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*/
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gameWindow.SDLWindow.GLSwap()
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@ -242,3 +251,105 @@ func handleEvents(running bool, gameWindow *game_window.GameWindow, camera *gl_o
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return running
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}
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var cubeVertices = []float32{
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// X, Y, Z, texture U, V
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// Bottom
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-1.0, -1.0, -1.0, 1.0, 1.0, 1.0, 0.0, 0.0,
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1.0, -1.0, -1.0, 1.0, 1.0, 1.0, 1.0, 0.0,
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-1.0, -1.0, 1.0, 1.0, 1.0, 1.0, 0.0, 1.0,
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1.0, -1.0, -1.0, 1.0, 1.0, 1.0, 1.0, 0.0,
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1.0, -1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0,
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-1.0, -1.0, 1.0, 1.0, 1.0, 1.0, 0.0, 1.0,
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// Top
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-1.0, 1.0, -1.0, 1.0, 1.0, 1.0, 0.0, 0.0,
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-1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 0.0, 1.0,
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1.0, 1.0, -1.0, 1.0, 1.0, 1.0, 1.0, 0.0,
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1.0, 1.0, -1.0, 1.0, 1.0, 1.0, 1.0, 0.0,
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-1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 0.0, 1.0,
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1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0,
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// Front
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-1.0, -1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 0.0,
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1.0, -1.0, 1.0, 1.0, 1.0, 1.0, 0.0, 0.0,
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-1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0,
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1.0, -1.0, 1.0, 1.0, 1.0, 1.0, 0.0, 0.0,
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1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 0.0, 1.0,
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-1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0,
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// Back
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-1.0, -1.0, -1.0, 1.0, 1.0, 1.0, 0.0, 0.0,
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-1.0, 1.0, -1.0, 1.0, 1.0, 1.0, 0.0, 1.0,
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1.0, -1.0, -1.0, 1.0, 1.0, 1.0, 1.0, 0.0,
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1.0, -1.0, -1.0, 1.0, 1.0, 1.0, 1.0, 0.0,
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-1.0, 1.0, -1.0, 1.0, 1.0, 1.0, 0.0, 1.0,
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1.0, 1.0, -1.0, 1.0, 1.0, 1.0, 1.0, 1.0,
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// Left
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-1.0, -1.0, 1.0, 1.0, 1.0, 1.0, 0.0, 1.0,
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-1.0, 1.0, -1.0, 1.0, 1.0, 1.0, 1.0, 0.0,
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-1.0, -1.0, -1.0, 1.0, 1.0, 1.0, 0.0, 0.0,
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-1.0, -1.0, 1.0, 1.0, 1.0, 1.0, 0.0, 1.0,
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-1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0,
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-1.0, 1.0, -1.0, 1.0, 1.0, 1.0, 1.0, 0.0,
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// Right
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1.0, -1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0,
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1.0, -1.0, -1.0, 1.0, 1.0, 1.0, 1.0, 0.0,
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1.0, 1.0, -1.0, 1.0, 1.0, 1.0, 0.0, 0.0,
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1.0, -1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0,
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1.0, 1.0, -1.0, 1.0, 1.0, 1.0, 0.0, 0.0,
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1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 0.0, 1.0,
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}
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var cubeVerticesOrig = []float32{
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// X, Y, Z, texture U, V
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// Bottom
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-1.0, -1.0, -1.0, 0.0, 0.0,
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1.0, -1.0, -1.0, 1.0, 0.0,
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-1.0, -1.0, 1.0, 0.0, 1.0,
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1.0, -1.0, -1.0, 1.0, 0.0,
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1.0, -1.0, 1.0, 1.0, 1.0,
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-1.0, -1.0, 1.0, 0.0, 1.0,
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// Top
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-1.0, 1.0, -1.0, 0.0, 0.0,
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-1.0, 1.0, 1.0, 0.0, 1.0,
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1.0, 1.0, -1.0, 1.0, 0.0,
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1.0, 1.0, -1.0, 1.0, 0.0,
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-1.0, 1.0, 1.0, 0.0, 1.0,
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1.0, 1.0, 1.0, 1.0, 1.0,
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// Front
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-1.0, -1.0, 1.0, 1.0, 0.0,
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1.0, -1.0, 1.0, 0.0, 0.0,
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-1.0, 1.0, 1.0, 1.0, 1.0,
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1.0, -1.0, 1.0, 0.0, 0.0,
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1.0, 1.0, 1.0, 0.0, 1.0,
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-1.0, 1.0, 1.0, 1.0, 1.0,
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// Back
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-1.0, -1.0, -1.0, 0.0, 0.0,
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-1.0, 1.0, -1.0, 0.0, 1.0,
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1.0, -1.0, -1.0, 1.0, 0.0,
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1.0, -1.0, -1.0, 1.0, 0.0,
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-1.0, 1.0, -1.0, 0.0, 1.0,
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1.0, 1.0, -1.0, 1.0, 1.0,
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// Left
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-1.0, -1.0, 1.0, 0.0, 1.0,
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-1.0, 1.0, -1.0, 1.0, 0.0,
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-1.0, -1.0, -1.0, 0.0, 0.0,
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-1.0, -1.0, 1.0, 0.0, 1.0,
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-1.0, 1.0, 1.0, 1.0, 1.0,
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-1.0, 1.0, -1.0, 1.0, 0.0,
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// Right
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1.0, -1.0, 1.0, 1.0, 1.0,
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1.0, -1.0, -1.0, 1.0, 0.0,
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1.0, 1.0, -1.0, 0.0, 0.0,
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1.0, -1.0, 1.0, 1.0, 1.0,
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1.0, 1.0, -1.0, 0.0, 0.0,
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1.0, 1.0, 1.0, 0.0, 1.0,
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}
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@ -92,10 +92,10 @@ uniform mat4 model;
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in vec3 vert;
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in vec3 vertColor;
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in vec2 vertTexCoord;
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out vec3 outColor;
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out vec3 fragColor;
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out vec2 fragTexCoord;
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void main() {
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outColor = vertColor;
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fragColor = vertColor;
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fragTexCoord = vertTexCoord;
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gl_Position = projection * camera * model * vec4(vert, 1);
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}
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@ -104,11 +104,11 @@ void main() {
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var fragmentShader = `
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#version 330
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uniform sampler2D tex;
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in vec3 fragColor;
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in vec2 fragTexCoord;
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in vec3 inColor;
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out vec4 outputColor;
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void main() {
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outputColor = vec4(inColor, 1);
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outputColor = texture(tex, fragTexCoord) * vec4(fragColor, 1);
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}
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` + "\x00"
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@ -1,45 +1,51 @@
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package gl_objects
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import (
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gl "github.com/go-gl/gl/v3.1/gles2"
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"github.com/go-gl/mathgl/mgl32"
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)
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type Box struct {
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Size int32
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Faces []*Face
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Color mgl32.Vec3
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Position mgl32.Vec3
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TextureOn bool
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Size int32
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Faces []*Face
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Color mgl32.Vec3
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Position mgl32.Vec3
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TextureOn bool
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VertexArray []float32
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GLProgram uint32
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GLVertexArrayId uint32
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GLVertexBufferId uint32
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GLTextureId uint32
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}
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func NewBox(
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length, width, depth float32,
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position, color mgl32.Vec3, textureOn bool) *Box {
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// length = z axis (towards)
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depth, width, height float32,
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position, color mgl32.Vec3) *Box {
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// depth = z axis (towards)
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// width = x axis (right)
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// depth = y axis (up)
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// height = y axis (up)
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box := Box{}
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box.Color = color
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box.Size = 6
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topPos := mgl32.Vec3{position.X(), position.Y() + depth/2.0, position.Z()}
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top := NewFace(width, length, topPos, mgl32.Vec3{0, 1, 0}, color, textureOn)
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topPos := mgl32.Vec3{position.X(), position.Y() + height/2.0, position.Z()}
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top := NewFace(width, depth, topPos, mgl32.Vec3{0, 1, 0}, color)
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bottomPos := mgl32.Vec3{position.X(), position.Y() - depth/2.0, position.Z()}
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bottom := NewFace(width, length, bottomPos, mgl32.Vec3{0, -1, 0}, color, textureOn)
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bottomPos := mgl32.Vec3{position.X(), position.Y() - height/2.0, position.Z()}
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bottom := NewFace(width, depth, bottomPos, mgl32.Vec3{0, -1, 0}, color)
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frontPos := mgl32.Vec3{position.X(), position.Y(), position.Z() + length/2.0}
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front := NewFace(width, depth, frontPos, mgl32.Vec3{0, 0, 1}, color, textureOn)
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frontPos := mgl32.Vec3{position.X(), position.Y(), position.Z() + depth/2.0}
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front := NewFace(width, height, frontPos, mgl32.Vec3{0, 0, 1}, color)
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backPos := mgl32.Vec3{position.X(), position.Y(), position.Z() - length/2.0}
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back := NewFace(width, depth, backPos, mgl32.Vec3{0, 0, -1}, color, textureOn)
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backPos := mgl32.Vec3{position.X(), position.Y(), position.Z() - depth/2.0}
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back := NewFace(width, height, backPos, mgl32.Vec3{0, 0, -1}, color)
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rightPos := mgl32.Vec3{position.X() + width/2.0, position.Y(), position.Z()}
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right := NewFace(length, depth, rightPos, mgl32.Vec3{1, 0, 0}, color, textureOn)
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right := NewFace(height, depth, rightPos, mgl32.Vec3{1, 0, 0}, color)
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leftPos := mgl32.Vec3{position.X() - width/2.0, position.Y(), position.Z()}
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left := NewFace(length, depth, leftPos, mgl32.Vec3{-1, 0, 0}, color, textureOn)
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left := NewFace(height, depth, leftPos, mgl32.Vec3{-1, 0, 0}, color)
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box.Faces = []*Face{
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top,
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@ -50,9 +56,53 @@ func NewBox(
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left,
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}
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box.VertexArray = box.GetVertexArray()
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return &box
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}
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func (b *Box) GLInit(glProgram uint32) {
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gl.GenVertexArrays(1, &b.GLVertexArrayId)
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gl.BindVertexArray(b.GLVertexArrayId)
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gl.GenBuffers(1, &b.GLVertexBufferId)
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gl.BindBuffer(gl.ARRAY_BUFFER, b.GLVertexBufferId)
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gl.BufferData(gl.ARRAY_BUFFER, len(b.VertexArray)*4, gl.Ptr(b.VertexArray), gl.STATIC_DRAW)
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var sizeofFloat int32 = 4
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stride := VertexSize * sizeofFloat
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vertAttrib := uint32(gl.GetAttribLocation(b.GLProgram, gl.Str("vert\x00")))
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gl.EnableVertexAttribArray(vertAttrib)
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gl.VertexAttribPointerWithOffset(vertAttrib, 3, gl.FLOAT, false, stride, uintptr(0))
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vertColorAttrib := uint32(gl.GetAttribLocation(b.GLProgram, gl.Str("vertColor\x00")))
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gl.EnableVertexAttribArray(vertColorAttrib)
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gl.VertexAttribPointerWithOffset(vertColorAttrib, 3, gl.FLOAT, false, stride, uintptr(3*sizeofFloat))
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texCoordAttrib := uint32(gl.GetAttribLocation(b.GLProgram, gl.Str("vertTexCoord\x00")))
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gl.EnableVertexAttribArray(texCoordAttrib)
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gl.VertexAttribPointerWithOffset(texCoordAttrib, 2, gl.FLOAT, false, stride, uintptr(6*sizeofFloat))
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}
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func (b *Box) Update() {
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// TODO anything?
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// maybe collision detection
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return
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}
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func (b *Box) Draw() {
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gl.BindVertexArray(b.GLVertexArrayId)
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gl.ActiveTexture(gl.TEXTURE0)
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gl.BindTexture(gl.TEXTURE_2D, b.GLTextureId)
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gl.DrawArrays(gl.TRIANGLES, 0, 6*2*3) // 6 sides, 2 triangles, 3 points each
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||||
}
|
||||
|
||||
func (b *Box) SetTexture(textureId uint32) {
|
||||
b.GLTextureId = textureId
|
||||
}
|
||||
|
||||
func (b *Box) GetVertexArray() []float32 {
|
||||
// Boxes have 6 faces, 2 triangles per face, 3 vertices per triangle
|
||||
// (technically 2 vertices overlap in a face, but ignore that for now)
|
||||
|
|
|
|||
|
|
@ -23,9 +23,10 @@ type Camera struct {
|
|||
RotationVelocity float32
|
||||
RotateStep float32
|
||||
MouseSensitivity float32
|
||||
GLProgram uint32
|
||||
}
|
||||
|
||||
func NewCamera() Camera {
|
||||
func NewCamera(glProgram uint32) Camera {
|
||||
camera := Camera{}
|
||||
camera.Up = mgl32.Vec3{0, 1, 0}
|
||||
camera.OriginalUp = mgl32.Vec3{0, 1, 0}
|
||||
|
|
@ -34,6 +35,7 @@ func NewCamera() Camera {
|
|||
camera.MoveStep = 0.1
|
||||
camera.RotateStep = 0.01
|
||||
camera.MouseSensitivity = 0.06
|
||||
camera.GLProgram = glProgram
|
||||
return camera
|
||||
}
|
||||
|
||||
|
|
@ -41,9 +43,9 @@ func (c *Camera) GetCenter() mgl32.Vec3 {
|
|||
return c.Position.Add(c.Direction)
|
||||
}
|
||||
|
||||
func (c *Camera) Draw(program uint32) {
|
||||
func (c *Camera) Draw() {
|
||||
cameraMatrix := mgl32.LookAtV(c.Position, c.GetCenter(), c.Up)
|
||||
cameraUniform := gl.GetUniformLocation(program, gl.Str("camera\x00"))
|
||||
cameraUniform := gl.GetUniformLocation(c.GLProgram, gl.Str("camera\x00"))
|
||||
gl.UniformMatrix4fv(cameraUniform, 1, false, &cameraMatrix[0])
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -15,46 +15,43 @@ type Face struct {
|
|||
func NewFace(
|
||||
width, height float32,
|
||||
center, normal mgl32.Vec3,
|
||||
color mgl32.Vec3, textureOn bool) *Face {
|
||||
|
||||
// TODO texture
|
||||
texture := mgl32.Vec2{0, 0}
|
||||
color mgl32.Vec3) *Face {
|
||||
|
||||
// top left
|
||||
v1 := newFaceVertex(
|
||||
height/2.0,
|
||||
-1*width/2.0,
|
||||
height/2.0,
|
||||
center,
|
||||
normal,
|
||||
color,
|
||||
texture)
|
||||
mgl32.Vec2{0, 1})
|
||||
|
||||
// bottom left
|
||||
v2 := newFaceVertex(
|
||||
-1*height/2.0,
|
||||
-1*width/2.0,
|
||||
-1*height/2.0,
|
||||
center,
|
||||
normal,
|
||||
color,
|
||||
texture)
|
||||
mgl32.Vec2{0, 0})
|
||||
|
||||
// bottom right
|
||||
v3 := newFaceVertex(
|
||||
-1*height/2.0,
|
||||
width/2.0,
|
||||
-1*height/2.0,
|
||||
center,
|
||||
normal,
|
||||
color,
|
||||
texture)
|
||||
mgl32.Vec2{1, 0})
|
||||
|
||||
// top right
|
||||
v4 := newFaceVertex(
|
||||
height/2.0,
|
||||
width/2.0,
|
||||
height/2.0,
|
||||
center,
|
||||
normal,
|
||||
color,
|
||||
texture)
|
||||
mgl32.Vec2{1, 1})
|
||||
|
||||
t1 := NewTriangle(v1, v2, v3)
|
||||
t2 := NewTriangle(v3, v4, v1)
|
||||
|
|
|
|||
Loading…
Reference in New Issue