diff --git a/raylib/raylib.go b/raylib/raylib.go
index 7e8208b..0c27020 100644
--- a/raylib/raylib.go
+++ b/raylib/raylib.go
@@ -318,9 +318,13 @@ const (
 	KeyVolumeDown = 25
 
 	// Mouse Buttons
-	MouseLeftButton   = 0
-	MouseRightButton  = 1
-	MouseMiddleButton = 2
+	MouseLeftButton    = 0
+	MouseRightButton   = 1
+	MouseMiddleButton  = 2
+	MouseSideButton    = 3
+	MouseExtraButton   = 4
+	MouseForwardButton = 5
+	MouseBackButton    = 6
 
 	// Touch points registered
 	MaxTouchPoints = 2
@@ -930,12 +934,14 @@ type BlendMode int32
 
 // Color blending modes (pre-defined)
 const (
-	BlendAlpha          BlendMode = iota // Blend textures considering alpha (default)
-	BlendAdditive                        // Blend textures adding colors
-	BlendMultiplied                      // Blend textures multiplying colors
-	BlendAddColors                       // Blend textures adding colors (alternative)
-	BlendSubtractColors                  // Blend textures subtracting colors (alternative)
-	BlendCustom                          // Blend textures using custom src/dst factors (use SetBlendModeCustom())
+	BlendAlpha            BlendMode = iota // Blend textures considering alpha (default)
+	BlendAdditive                          // Blend textures adding colors
+	BlendMultiplied                        // Blend textures multiplying colors
+	BlendAddColors                         // Blend textures adding colors (alternative)
+	BlendSubtractColors                    // Blend textures subtracting colors (alternative)
+	BlendAlphaPremultiply                  // Blend premultiplied textures considering alpha
+	BlendCustom                            // Blend textures using custom src/dst factors
+	BlendCustomSeparate                    // Blend textures using custom rgb/alpha separate src/dst factors
 )
 
 // Shader type (generic shader)
diff --git a/raylib/rmodels.go b/raylib/rmodels.go
index 4ea40ee..aee6ea2 100644
--- a/raylib/rmodels.go
+++ b/raylib/rmodels.go
@@ -158,6 +158,28 @@ func DrawCylinderWires(position Vector3, radiusTop float32, radiusBottom float32
 	C.DrawCylinderWires(*cposition, cradiusTop, cradiusBottom, cheight, cslices, *ccolor)
 }
 
+// DrawCapsule - Draw a capsule with the center of its sphere caps at startPos and endPos
+func DrawCapsule(startPos, endPos Vector3, radius float32, slices, rings int32, col color.RGBA) {
+	cstartPos := startPos.cptr()
+	cendPos := startPos.cptr()
+	cradius := (C.float)(radius)
+	cslices := (C.int)(slices)
+	crings := (C.int)(slices)
+	ccolor := colorCptr(col)
+	C.DrawCapsule(*cstartPos, *cendPos, cradius, cslices, crings, *ccolor)
+}
+
+// DrawCapsuleWires - Draw capsule wireframe with the center of its sphere caps at startPos and endPos
+func DrawCapsuleWires(startPos, endPos Vector3, radius float32, slices, rings int32, col color.RGBA) {
+	cstartPos := startPos.cptr()
+	cendPos := startPos.cptr()
+	cradius := (C.float)(radius)
+	cslices := (C.int)(slices)
+	crings := (C.int)(slices)
+	ccolor := colorCptr(col)
+	C.DrawCapsuleWires(*cstartPos, *cendPos, cradius, cslices, crings, *ccolor)
+}
+
 // DrawPlane - Draw a plane XZ
 func DrawPlane(centerPos Vector3, size Vector2, col color.RGBA) {
 	ccenterPos := centerPos.cptr()
diff --git a/raylib/rtextures.go b/raylib/rtextures.go
index 8657d2d..ba343a5 100644
--- a/raylib/rtextures.go
+++ b/raylib/rtextures.go
@@ -384,7 +384,7 @@ func ImageDraw(dst, src *Image, srcRec, dstRec Rectangle, tint color.RGBA) {
 	C.ImageDraw(cdst, *csrc, *csrcRec, *cdstRec, *ctint)
 }
 
-// ImageDrawCircle - Draw circle within an image
+// ImageDrawCircle - Draw a filled circle within an image
 func ImageDrawCircle(dst *Image, centerX, centerY, radius int32, col color.RGBA) {
 	cdst := dst.cptr()
 	ccenterX := (C.int)(centerX)
@@ -394,7 +394,7 @@ func ImageDrawCircle(dst *Image, centerX, centerY, radius int32, col color.RGBA)
 	C.ImageDrawCircle(cdst, ccenterX, ccenterY, cradius, *ccolor)
 }
 
-// ImageDrawCircleV - Draw circle within an image
+// ImageDrawCircleV - Draw a filled circle within an image (Vector version)
 func ImageDrawCircleV(dst *Image, center Vector2, radius int32, col color.RGBA) {
 	cdst := dst.cptr()
 	ccenter := center.cptr()
@@ -403,6 +403,25 @@ func ImageDrawCircleV(dst *Image, center Vector2, radius int32, col color.RGBA)
 	C.ImageDrawCircleV(cdst, *ccenter, cradius, *ccolor)
 }
 
+// ImageDrawCircleLines - Draw circle outline within an image
+func ImageDrawCircleLines(dst *Image, centerX, centerY, radius int32, col color.RGBA) {
+	cdst := dst.cptr()
+	ccenterX := (C.int)(centerX)
+	ccenterY := (C.int)(centerY)
+	cradius := (C.int)(radius)
+	ccolor := colorCptr(col)
+	C.ImageDrawCircleLines(cdst, ccenterX, ccenterY, cradius, *ccolor)
+}
+
+// ImageDrawCircleLinesV - Draw circle outline within an image (Vector version)
+func ImageDrawCircleLinesV(dst *Image, center Vector2, radius int32, col color.RGBA) {
+	cdst := dst.cptr()
+	ccenter := center.cptr()
+	cradius := (C.int)(radius)
+	ccolor := colorCptr(col)
+	C.ImageDrawCircleLinesV(cdst, *ccenter, cradius, *ccolor)
+}
+
 // ImageDrawPixel - Draw pixel within an image
 func ImageDrawPixel(dst *Image, posX, posY int32, col color.RGBA) {
 	cdst := dst.cptr()
@@ -555,6 +574,19 @@ func GenImageWhiteNoise(width, height int, factor float32) *Image {
 	return v
 }
 
+// GenImagePerlinNoise - Generate image: perlin noise
+func GenImagePerlinNoise(width, height, offsetX, offsetY int, scale float32) *Image {
+	cwidth := (C.int)(width)
+	cheight := (C.int)(height)
+	coffsetX := (C.int)(offsetX)
+	coffsetY := (C.int)(offsetY)
+	cscale := (C.float)(scale)
+
+	ret := C.GenImagePerlinNoise(cwidth, cheight, coffsetX, coffsetY, cscale)
+	v := newImageFromPointer(unsafe.Pointer(&ret))
+	return v
+}
+
 // GenImageCellular - Generate image: cellular algorithm. Bigger tileSize means bigger cells
 func GenImageCellular(width, height, tileSize int) *Image {
 	cwidth := (C.int)(width)
@@ -566,6 +598,18 @@ func GenImageCellular(width, height, tileSize int) *Image {
 	return v
 }
 
+// GenImageText - Generate image: grayscale image from text data
+func GenImageText(width, height int, text string) *Image {
+	cwidth := (C.int)(width)
+	cheight := (C.int)(height)
+	ctext := C.CString(text)
+	defer C.free(unsafe.Pointer(ctext))
+
+	ret := C.GenImageText(cwidth, cheight, ctext)
+	v := newImageFromPointer(unsafe.Pointer(&ret))
+	return v
+}
+
 // GenTextureMipmaps - Generate GPU mipmaps for a texture
 func GenTextureMipmaps(texture *Texture2D) {
 	ctexture := texture.cptr()