2 files changed, 22 insertions, 0 deletions
diff --git a/src/mbgl/gl/context.cpp b/src/mbgl/gl/context.cpp
index 811a038caf..c63819bc03 100644
--- a/src/mbgl/gl/context.cpp
+++ b/src/mbgl/gl/context.cpp
@@ -118,6 +118,17 @@ std::unique_ptr<uint8_t[]> Context::readFramebuffer(const Size size, const Textu
     return data;
 }
 
+#if not MBGL_USE_GLES2
+void Context::drawPixels(const Size size, const void* data, TextureFormat format) {
+    pixelStoreUnpack = { 1 };
+    if (format != TextureFormat::RGBA) {
+        format = static_cast<TextureFormat>(GL_LUMINANCE);
+    }
+    MBGL_CHECK_ERROR(glDrawPixels(size.width, size.height, static_cast<GLenum>(GL_LUMINANCE),
+                                  GL_UNSIGNED_BYTE, data));
+}
+#endif // MBGL_USE_GLES2
+
 namespace {
 
 void checkFramebuffer() {
diff --git a/src/mbgl/gl/context.hpp b/src/mbgl/gl/context.hpp
index 169aa5566e..438450fe14 100644
--- a/src/mbgl/gl/context.hpp
+++ b/src/mbgl/gl/context.hpp
@@ -71,6 +71,14 @@ public:
         return { size, readFramebuffer(size, format, flip) };
     }
 
+#if not MBGL_USE_GLES2
+    template <typename Image>
+    void drawPixels(const Image& image) {
+        auto format = image.channels == 4 ? TextureFormat::RGBA : TextureFormat::Alpha;
+        drawPixels(image.size, image.data.get(), format);
+    }
+#endif // MBGL_USE_GLES2
+
     // Create a texture from an image with data.
     template <typename Image>
     Texture createTexture(const Image& image, TextureUnit unit = 0) {
@@ -177,6 +185,9 @@ private:
     UniqueFramebuffer createFramebuffer();
     UniqueRenderbuffer createRenderbuffer(RenderbufferType, Size size);
     std::unique_ptr<uint8_t[]> readFramebuffer(Size, TextureFormat, bool flip);
+#if not MBGL_USE_GLES2
+    void drawPixels(Size size, const void* data, TextureFormat);
+#endif // MBGL_USE_GLES2
 
     PrimitiveType operator()(const Points&);
     PrimitiveType operator()(const Lines&);