Fix ImageKnob after last couple of changes

Signed-off-by: falkTX <falktx@falktx.com>

dgl/OpenGL.hpp

@@ -117,6 +117,28 @@ struct OpenGLGraphicsContext : GraphicsContext
 
 // -----------------------------------------------------------------------
 
+static inline
+GLenum asOpenGLImageFormat(const ImageFormat format)
+{
+    switch (format)
+    {
+    case kImageFormatNull:
+        break;
+    case kImageFormatBGR:
+        return GL_BGR;
+    case kImageFormatBGRA:
+        return GL_BGRA;
+    case kImageFormatRGB:
+        return GL_RGB;
+    case kImageFormatRGBA:
+        return GL_RGBA;
+    }
+
+    return 0x0;
+}
+
+// -----------------------------------------------------------------------
+
 /**
    OpenGL Image class.
 

dgl/src/ImageWidgets.cpp

@@ -358,13 +358,14 @@ void ImageKnob::onDisplay()
             const uint& v1(fIsImgVertical ? fImgLayerWidth : fImgLayerHeight);
             const uint& v2(fIsImgVertical ? fImgLayerHeight : fImgLayerWidth);
 
-            const uint layerDataSize   = v1 * v2 * ((fImage.getFormat() == GL_BGRA || fImage.getFormat() == GL_RGBA) ? 4 : 3);
+            const uint layerDataSize   = v1 * v2 * ((fImage.getFormat() == kImageFormatBGRA ||
+                                                     fImage.getFormat() == kImageFormatRGBA) ? 4 : 3);
             /*      */ imageDataOffset = layerDataSize * uint(normValue * float(fImgLayerCount-1));
         }
 
         glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA,
                      static_cast<GLsizei>(getWidth()), static_cast<GLsizei>(getHeight()), 0,
-                     fImage.getFormat(), fImage.getType(), fImage.getRawData() + imageDataOffset);
+                     asOpenGLImageFormat(fImage.getFormat()), GL_UNSIGNED_BYTE, fImage.getRawData() + imageDataOffset);
 
         fIsReady = true;
     }

dgl/src/OpenGL.cpp

@@ -270,25 +270,6 @@ template class Rectangle<ushort>;
 // -----------------------------------------------------------------------
 // OpenGLImage
 
-static GLenum asOpenGLImageFormat(const ImageFormat format)
-{
-    switch (format)
-    {
-    case kImageFormatNull:
-        break;
-    case kImageFormatBGR:
-        return GL_BGR;
-    case kImageFormatBGRA:
-        return GL_BGRA;
-    case kImageFormatRGB:
-        return GL_RGB;
-    case kImageFormatRGBA:
-        return GL_RGBA;
-    }
-
-    return 0x0;
-}
-
 static void setupOpenGLImage(const OpenGLImage& image, GLuint textureId)
 {
     DISTRHO_SAFE_ASSERT_RETURN(image.isValid(),);