graphicsdriver: Rename MaxTextureSize -> MaxImageSize

internal/graphicscommand/image.go

@@ -21,22 +21,21 @@ import (
 )
 
 var (
-	// maxTextureSize is the maximum texture size
+	// maxImageSize is the maximum texture size
 	//
-	// maxTextureSize also represents the default size (width or height) of viewport.
-	maxTextureSize = 0
+	// maxImageSize also represents the default size (width or height) of viewport.
+	maxImageSize = 0
 )
 
 // MaxImageSize returns the maximum of width/height of an image.
 func MaxImageSize() int {
-	if maxTextureSize == 0 {
-		maxTextureSize = driver().MaxTextureSize()
-		if maxTextureSize == 0 {
+	if maxImageSize == 0 {
+		maxImageSize = driver().MaxImageSize()
+		if maxImageSize == 0 {
 			panic("graphics: failed to get the max texture size")
 		}
 	}
-	s := maxTextureSize
-	return s
+	return maxImageSize
 }
 
 // Image represents an image that is implemented with OpenGL.

internal/graphicsdriver/graphicsdriver.go

@@ -23,7 +23,7 @@ type GraphicsDriver interface {
 	BufferSubData(vertices []float32, indices []uint16)
 	DrawElements(len int, offsetInBytes int)
 	Flush()
-	MaxTextureSize() int
+	MaxImageSize() int
 	NewImage(width, height int) (Image, error)
 	NewScreenFramebufferImage(width, height int) Image
 	Reset() error

internal/graphicsdriver/opengl/driver.go

@@ -83,6 +83,6 @@ func (d *Driver) Flush() {
 	theContext.flush()
 }
 
-func (d *Driver) MaxTextureSize() int {
+func (d *Driver) MaxImageSize() int {
 	return theContext.getMaxTextureSize()
 }