[core] move framebuffer reading to gl::Context

1 files changed, 1 insertions, 15 deletions

diff --git a/src/mbgl/util/offscreen_texture.cpp b/src/mbgl/util/offscreen_texture.cpp
index 6352e38ab7..aad20e59d3 100644
--- a/src/mbgl/util/offscreen_texture.cpp
+++ b/src/mbgl/util/offscreen_texture.cpp
@@ -1,6 +1,5 @@
 #include <mbgl/util/offscreen_texture.hpp>
 #include <mbgl/gl/context.hpp>
-#include <mbgl/gl/gl.hpp>
 
 #include <cstring>
 #include <cassert>
@@ -29,20 +28,7 @@ gl::Texture& OffscreenTexture::getTexture() {
 }
 
 PremultipliedImage OffscreenTexture::readStillImage() {
-    PremultipliedImage image { size };
-    MBGL_CHECK_ERROR(
-        glReadPixels(0, 0, size.width, size.height, GL_RGBA, GL_UNSIGNED_BYTE, image.data.get()));
-
-    const auto stride = image.stride();
-    auto tmp = std::make_unique<uint8_t[]>(stride);
-    uint8_t* rgba = image.data.get();
-    for (int i = 0, j = size.height - 1; i < j; i++, j--) {
-        std::memcpy(tmp.get(), rgba + i * stride, stride);
-        std::memcpy(rgba + i * stride, rgba + j * stride, stride);
-        std::memcpy(rgba + j * stride, tmp.get(), stride);
-    }
-
-    return image;
+    return context.readFramebuffer<PremultipliedImage>(size);
 }