opengl: Remove arrayBufferLayoutPart.dataType

internal/opengl/program.go

@@ -27,7 +27,6 @@ import (
 type arrayBufferLayoutPart struct {
 	// TODO: This struct should belong to a program and know it.
 	name string
-	dataType DataType
 	num  int
 }
 
@@ -47,7 +46,7 @@ func (a *arrayBufferLayout) totalBytes() int {
 	}
 	t := 0
 	for _, p := range a.parts {
-		t += p.dataType.SizeInBytes() * p.num
+		t += Float.SizeInBytes() * p.num
 	}
 	a.total = t
 	return a.total
@@ -66,8 +65,8 @@ func (a *arrayBufferLayout) enable(program program) {
 	total := a.totalBytes()
 	offset := 0
 	for _, p := range a.parts {
-		GetContext().vertexAttribPointer(program, p.name, p.num, p.dataType, total, offset)
-		offset += p.dataType.SizeInBytes() * p.num
+		GetContext().vertexAttribPointer(program, p.name, p.num, Float, total, offset)
+		offset += Float.SizeInBytes() * p.num
 	}
 }
 
@@ -88,17 +87,14 @@ func initializeArrayBuferLayout() {
 		parts: []arrayBufferLayoutPart{
 			{
 				name: "vertex",
-				dataType: Float,
 				num:  2,
 			},
 			{
 				name: "tex_coord",
-				dataType: Float,
 				num:  4,
 			},
 			{
 				name: "color_scale",
-				dataType: Float,
 				num:  4,
 			},
 		},