4 files changed, 13 insertions, 0 deletions
diff --git a/drivers/gles3/storage/config.cpp b/drivers/gles3/storage/config.cpp
index 609ecacded..943df3b156 100644
--- a/drivers/gles3/storage/config.cpp
+++ b/drivers/gles3/storage/config.cpp
@@ -94,6 +94,7 @@ Config::Config() {
 	glGetIntegerv(GL_MAX_TEXTURE_IMAGE_UNITS, &max_texture_image_units);
 	glGetIntegerv(GL_MAX_TEXTURE_SIZE, &max_texture_size);
 	glGetIntegerv(GL_MAX_UNIFORM_BLOCK_SIZE, &max_uniform_buffer_size);
+	glGetIntegerv(GL_MAX_VIEWPORT_DIMS, &max_viewport_size);
 
 	glGetIntegerv(GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT, &uniform_buffer_offset_alignment);
 
diff --git a/drivers/gles3/storage/config.h b/drivers/gles3/storage/config.h
index de08385e04..d4b38acd18 100644
--- a/drivers/gles3/storage/config.h
+++ b/drivers/gles3/storage/config.h
@@ -64,6 +64,7 @@ public:
 	int max_texture_image_units = 0;
 	int max_texture_size = 0;
 	int max_uniform_buffer_size = 0;
+	int max_viewport_size = 0;
 	int max_renderable_elements = 0;
 	int max_renderable_lights = 0;
 	int max_lights_per_object = 0;
diff --git a/drivers/gles3/storage/utilities.cpp b/drivers/gles3/storage/utilities.cpp
index 6e91f38050..0a04f0d4d0 100644
--- a/drivers/gles3/storage/utilities.cpp
+++ b/drivers/gles3/storage/utilities.cpp
@@ -356,4 +356,13 @@ String Utilities::get_video_adapter_api_version() const {
 	return (const char *)glGetString(GL_VERSION);
 }
 
+Size2i Utilities::get_maximum_viewport_size() const {
+	Config *config = Config::get_singleton();
+	if (!config) {
+		return Size2i();
+	}
+
+	return Size2i(config->max_viewport_size, config->max_viewport_size);
+}
+
 #endif // GLES3_ENABLED
diff --git a/drivers/gles3/storage/utilities.h b/drivers/gles3/storage/utilities.h
index e054f2f816..936ac35cc9 100644
--- a/drivers/gles3/storage/utilities.h
+++ b/drivers/gles3/storage/utilities.h
@@ -150,6 +150,8 @@ public:
 	virtual String get_video_adapter_vendor() const override;
 	virtual RenderingDevice::DeviceType get_video_adapter_type() const override;
 	virtual String get_video_adapter_api_version() const override;
+
+	virtual Size2i get_maximum_viewport_size() const override;
 };
 
 } // namespace GLES3