same for pixelgl

pixelgl/attr.go

@@ -8,9 +8,9 @@ type AttrFormat map[string]AttrType
 
 // Contains checks whether a format contains a specific attribute.
 //
-// It does a little more than a hard check: e.g. if you query a Vec2 attribute, but the format contains Vec3,
-// Contains returns true, because Vec2 is assignable to Vec3. Specifically, Float -> Vec2 -> Vec3 -> Vec4 (transitively).
-// This however does not work for matrices or ints.
+// It does a little more than a hard check: e.g. if you query a Vec2 attribute, but the format
+// contains Vec3, Contains returns true, because Vec2 is assignable to Vec3. Specifically,
+// Float -> Vec2 -> Vec3 -> Vec4 (transitively).  This however does not work for matrices or ints.
 func (af AttrFormat) Contains(attr Attr) bool {
 	if typ, ok := af[attr.Name]; ok {
 		if (Float <= typ && typ <= Vec4) && (Float <= attr.Type && attr.Type <= typ) {
@@ -30,7 +30,8 @@ func (af AttrFormat) Size() int {
 	return total
 }
 
-// Attr represents an arbitrary OpenGL attribute, such as a vertex attribute or a shader uniform attribute.
+// Attr represents an arbitrary OpenGL attribute, such as a vertex attribute or a shader
+// uniform attribute.
 type Attr struct {
 	Name string
 	Type AttrType

pixelgl/doc.go

@@ -1,4 +1,6 @@
-// Package pixelgl provides higher-level abstractions around the basic OpenGL primitives and operations.
+// Package pixelgl provides higher-level abstractions around the basic OpenGL primitives and
+// operations.
 //
-// This package deliberately does not handle nor report OpenGL errors, it's up to you to cause none.
+// This package deliberately does not handle nor report OpenGL errors, it's up to you to
+// cause none.
 package pixelgl

pixelgl/interface.go

@@ -2,15 +2,16 @@ package pixelgl
 
 // Doer is an interface for manipulating OpenGL state.
 //
-// OpenGL is a state machine. Every object can 'enter' it's state and 'leave' it's state. For example,
-// you can bind a buffer and unbind a buffer, bind a texture and unbind it, use shader and unuse it, and so on.
+// OpenGL is a state machine. Every object can 'enter' it's state and 'leave' it's state. For
+// example, you can bind a buffer and unbind a buffer, bind a texture and unbind it, use shader
+// and unuse it, and so on.
 //
-// This interface provides a clever and flexible way to do it. A typical workflow of an OpenGL object is that
-// you enter (load, bind) that object's state, then do something with it, and then leave the state. That 'something'
-// in between, let's call it sub (as in subroutine).
+// This interface provides a clever and flexible way to do it. A typical workflow of an OpenGL
+// object is that you enter (load, bind) that object's state, then do something with it, and
+// then leave the state. That 'something' in between, let's call it sub (as in subroutine).
 //
-// The recommended way to implement a Doer is to wrap another Doer (vertex array wraps texture and so on), let's call
-// it parent. Then the Do method will look like this:
+// The recommended way to implement a Doer is to wrap another Doer (vertex array wraps texture
+// and so on), let's call it parent. Then the Do method will look like this:
 //
 //   func (o *MyObject) Do(sub func(Context)) {
 //       o.parent.Do(func(ctx Context) {
@@ -20,21 +21,23 @@ package pixelgl
 //       })
 //   }
 //
-// It might seem difficult to grasp this kind of recursion at first, but it's really simple. What it's basically saying
-// is: "Hey parent, enter your state, then let me enter mine, then I'll do whatever I'm supposed to do in the middle.
-// After that I'll leave my state and please leave your state too parent."
+// It might seem difficult to grasp this kind of recursion at first, but it's really simple. What
+// it's basically saying is: "Hey parent, enter your state, then let me enter mine, then I'll
+// do whatever I'm supposed to do in the middle.  After that I'll leave my state and please
+// leave your state too parent."
 //
-// Also notice, that the functions are passing a Context around. This context contains the most important state variables.
-// Usually, you just pass it as you received it. If you want to pass a changed context to your child (e.g. your a shader),
-// use ctx.With* methods.
+// Also notice, that the functions are passing a Context around. This context contains the
+// most important state variables.  Usually, you just pass it as you received it. If you want
+// to pass a changed context to your child (e.g. your a shader), use ctx.With* methods.
 //
 // If possible and makes sense, Do method should be reentrant.
 type Doer interface {
 	Do(sub func(Context))
 }
 
-// Context takes state from one object to another. OpenGL is a state machine, so we have to approach it like that.
-// However, global variables are evil, so we have Context, that transfers important OpenGL state from one object to another.
+// Context takes state from one object to another. OpenGL is a state machine, so we have
+// to approach it like that.  However, global variables are evil, so we have Context, that
+// transfers important OpenGL state from one object to another.
 //
 // This type does *not* represent an OpenGL context in the OpenGL terminology.
 type Context struct {

pixelgl/shader.go

@@ -17,9 +17,11 @@ type Shader struct {
 	uniforms   map[string]int32
 }
 
-// NewShader creates a new shader program from the specified vertex shader and fragment shader sources.
+// NewShader creates a new shader program from the specified vertex shader and fragment shader
+// sources.
 //
-// Note that vertexShader and fragmentShader parameters must contain the source code, they're not filenames.
+// Note that vertexShader and fragmentShader parameters must contain the source code, they're
+// not filenames.
 func NewShader(parent Doer, vertexFmt, uniformFmt AttrFormat, vertexShader, fragmentShader string) (*Shader, error) {
 	shader := &Shader{
 		parent: parent,
@@ -144,7 +146,8 @@ func (s *Shader) UniformFormat() AttrFormat {
 //
 // If the attribute does not exist, this method returns false.
 //
-// Supplied value must correspond to the type of the attribute. Correct types are these (right-hand is the type of the value):
+// Supplied value must correspond to the type of the attribute. Correct types are these
+// (right-hand is the type of the value):
 //   Attr{Type: Int}:   int32
 //   Attr{Type: Float}: float32
 //   Attr{Type: Vec2}:  mgl32.Vec2

pixelgl/thread.go

@@ -6,7 +6,8 @@ import (
 	"github.com/go-gl/gl/v3.3-core/gl"
 )
 
-// Due to the limitations of OpenGL and operating systems, all OpenGL related calls must be done from the main thread.
+// Due to the limitations of OpenGL and operating systems, all OpenGL related calls must be
+// done from the main thread.
 
 var callQueue = make(chan func(), 32)
 
@@ -14,11 +15,11 @@ func init() {
 	runtime.LockOSThread()
 }
 
-// Run is essentialy the "main" function of the pixelgl package.
-// Run this function from the main function (because that's guaranteed to run in the main thread).
+// Run is essentialy the "main" function of the pixelgl package.  Run this function from the
+// main function (because that's guaranteed to run in the main thread).
 //
-// This function reserves the main thread for the OpenGL stuff and runs a supplied run function in a
-// separate goroutine.
+// This function reserves the main thread for the OpenGL stuff and runs a supplied run function
+// in a separate goroutine.
 //
 // Run returns when the provided run function finishes.
 func Run(run func()) {
@@ -43,8 +44,8 @@ loop:
 // Init initializes OpenGL by loading the function pointers from the active OpenGL context.
 // This function must be manually run inside the main thread (Do, DoErr, DoVal, etc.).
 //
-// It must be called under the presence of an active OpenGL context, e.g., always after calling window.MakeContextCurrent().
-// Also, always call this function when switching contexts.
+// It must be called under the presence of an active OpenGL context, e.g., always after calling
+// window.MakeContextCurrent().  Also, always call this function when switching contexts.
 func Init() {
 	err := gl.Init()
 	if err != nil {
@@ -54,14 +55,13 @@ func Init() {
 	gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
 }
 
-// DoNoBlock executes a function inside the main OpenGL thread.
-// DoNoBlock does not wait until the function finishes.
+// DoNoBlock executes a function inside the main OpenGL thread.  DoNoBlock does not wait until
+// the function finishes.
 func DoNoBlock(f func()) {
 	callQueue <- f
 }
 
-// Do executes a function inside the main OpenGL thread.
-// Do blocks until the function finishes.
+// Do executes a function inside the main OpenGL thread.  Do blocks until the function finishes.
 //
 // All OpenGL calls must be done in the dedicated thread.
 func Do(f func()) {

pixelgl/vertex.go

@@ -23,8 +23,9 @@ type VertexArray struct {
 
 // NewVertexArray creates a new empty vertex array and wraps another Doer around it.
 //
-// You cannot specify vertex attributes in this constructor, only their count. Use SetVertexAttribute* methods to
-// set the vertex attributes. Use indices to specify how you want to combine vertices into triangles.
+// You cannot specify vertex attributes in this constructor, only their count. Use
+// SetVertexAttribute* methods to set the vertex attributes. Use indices to specify how you
+// want to combine vertices into triangles.
 func NewVertexArray(parent Doer, format AttrFormat, numVertices int, indices []int) (*VertexArray, error) {
 	va := &VertexArray{
 		parent: parent,
@@ -144,9 +145,9 @@ func (va *VertexArray) Draw() {
 	va.Do(func(Context) {})
 }
 
-// SetIndices sets the indices of triangles to be drawn. Triangles will be formed from the vertices of the array
-// as defined by these indices. The first drawn triangle is specified by the first three indices, the second by
-// the fourth through sixth and so on.
+// SetIndices sets the indices of triangles to be drawn. Triangles will be formed from the
+// vertices of the array as defined by these indices. The first drawn triangle is specified by
+// the first three indices, the second by the fourth through sixth and so on.
 func (va *VertexArray) SetIndices(indices []int) {
 	if len(indices)%3 != 0 {
 		panic("vertex array set indices: number of indices not divisible by 3")
@@ -180,10 +181,11 @@ func (va *VertexArray) Indices() []int {
 
 // SetVertexAttr sets the value of the specified vertex attribute of the specified vertex.
 //
-// If the vertex attribute does not exist, this method returns false. If the vertex is out of range,
-// this method panics.
+// If the vertex attribute does not exist, this method returns false. If the vertex is out of
+// range, this method panics.
 //
-// Supplied value must correspond to the type of the attribute. Correct types are these (righ-hand is the type of the value):
+// Supplied value must correspond to the type of the attribute. Correct types are these
+// (righ-hand is the type of the value):
 //   Attr{Type: Float}: float32
 //   Attr{Type: Vec2}:  mgl32.Vec2
 //   Attr{Type: Vec3}:  mgl32.Vec3
@@ -228,8 +230,8 @@ func (va *VertexArray) SetVertexAttr(vertex int, attr Attr, value interface{}) (
 
 // VertexAttr returns the current value of the specified vertex attribute of the specified vertex.
 //
-// If the vertex attribute does not exist, this method returns nil and false. If the vertex is out of range,
-// this method panics.
+// If the vertex attribute does not exist, this method returns nil and false. If the vertex is
+// out of range, this method panics.
 //
 // The type of the returned value follows the same rules as with SetVertexAttr.
 func (va *VertexArray) VertexAttr(vertex int, attr Attr) (value interface{}, ok bool) {
@@ -273,7 +275,8 @@ func (va *VertexArray) VertexAttr(vertex int, attr Attr) (value interface{}, ok
 	return value, true
 }
 
-// SetVertex sets values of the attributes specified in the supplied map. All other attributes will be set to zero.
+// SetVertex sets values of the attributes specified in the supplied map. All other attributes
+// will be set to zero.
 //
 // Not existing attributes are silently skipped.
 func (va *VertexArray) SetVertex(vertex int, values map[Attr]interface{}) {
@@ -361,8 +364,9 @@ func (va *VertexArray) Vertex(vertex int) (values map[Attr]interface{}) {
 	return values
 }
 
-// SetVertices sets values of vertex attributes of all vertices as specified in the supplied slice of maps. If the length of vertices
-// does not match the number of vertices in the vertex array, this method panics.
+// SetVertices sets values of vertex attributes of all vertices as specified in the supplied
+// slice of maps. If the length of vertices does not match the number of vertices in the vertex
+// array, this method panics.
 //
 // Not existing attributes are silently skipped.
 func (va *VertexArray) SetVertices(vertices []map[Attr]interface{}) {
@@ -405,7 +409,8 @@ func (va *VertexArray) SetVertices(vertices []map[Attr]interface{}) {
 	})
 }
 
-// Vertices returns values of vertex attributes of all vertices in a vertex array in a slice of maps.
+// Vertices returns values of vertex attributes of all vertices in a vertex array in a slice
+// of maps.
 func (va *VertexArray) Vertices() (vertices []map[Attr]interface{}) {
 	data := make([]float32, va.numVertices*va.format.Size()/4)
 
@@ -448,7 +453,8 @@ func (va *VertexArray) Vertices() (vertices []map[Attr]interface{}) {
 	return vertices
 }
 
-// Do binds a vertex arrray and it's associated vertex buffer, executes sub, and unbinds the vertex array and it's vertex buffer.
+// Do binds a vertex arrray and it's associated vertex buffer, executes sub, and unbinds the
+// vertex array and it's vertex buffer.
 func (va *VertexArray) Do(sub func(Context)) {
 	va.parent.Do(func(ctx Context) {
 		DoNoBlock(func() {