More purego functions added

raylib/raylib_purego.go

@@ -23,6 +23,9 @@ var windowShouldClose func() bool
 var beginDrawing func()
 var endDrawing func()
 var clearBackground func(col uintptr)
+var loadTexture func(texture uintptr, fileName string)
+var unloadTexture func(texture uintptr)
+var drawTextureV func(texture uintptr, position uintptr, tint uintptr)
 
 func init() {
 	switch runtime.GOOS {
@@ -38,6 +41,9 @@ func init() {
 	purego.RegisterLibFunc(&beginDrawing, raylibDll, "BeginDrawing")
 	purego.RegisterLibFunc(&endDrawing, raylibDll, "EndDrawing")
 	purego.RegisterLibFunc(&clearBackground, raylibDll, "ClearBackground")
+	purego.RegisterLibFunc(&loadTexture, raylibDll, "LoadTexture")
+	purego.RegisterLibFunc(&unloadTexture, raylibDll, "UnloadTexture")
+	purego.RegisterLibFunc(&drawTextureV, raylibDll, "DrawTextureV")
 }
 
 // InitWindow - Initialize Window and OpenGL Graphics
@@ -69,3 +75,20 @@ func EndDrawing() {
 func ClearBackground(col color.RGBA) {
 	clearBackground(*(*uintptr)(unsafe.Pointer(&col)))
 }
+
+// LoadTexture - Load an image as texture into GPU memory
+func LoadTexture(fileName string) Texture2D {
+	var texture Texture2D
+	loadTexture(uintptr(unsafe.Pointer(&texture)), fileName)
+	return texture
+}
+
+// UnloadTexture - Unload texture from GPU memory
+func UnloadTexture(texture Texture2D) {
+	unloadTexture(uintptr(unsafe.Pointer(&texture)))
+}
+
+// DrawTextureV - Draw a Texture2D with position defined as Vector2
+func DrawTextureV(texture Texture2D, position Vector2, tint color.RGBA) {
+	drawTextureV(uintptr(unsafe.Pointer(&texture)), *(*uintptr)(unsafe.Pointer(&position)), *(*uintptr)(unsafe.Pointer(&tint)))
+}