renderer_opengl/utils: Forward declare private structs

Keeps the definitions hidden and allows changes to the structs without
needing to recompile all users of classes containing said structs.

src/video_core/renderer_opengl/utils.cpp

@@ -16,6 +16,13 @@
 
 namespace OpenGL {
 
+struct VertexArrayPushBuffer::Entry {
+    GLuint binding_index{};
+    const GLuint* buffer{};
+    GLintptr offset{};
+    GLsizei stride{};
+};
+
 VertexArrayPushBuffer::VertexArrayPushBuffer() = default;
 
 VertexArrayPushBuffer::~VertexArrayPushBuffer() = default;
@@ -47,6 +54,13 @@ void VertexArrayPushBuffer::Bind() {
     }
 }
 
+struct BindBuffersRangePushBuffer::Entry {
+    GLuint binding;
+    const GLuint* buffer;
+    GLintptr offset;
+    GLsizeiptr size;
+};
+
 BindBuffersRangePushBuffer::BindBuffersRangePushBuffer(GLenum target) : target{target} {}
 
 BindBuffersRangePushBuffer::~BindBuffersRangePushBuffer() = default;

src/video_core/renderer_opengl/utils.h

@@ -26,12 +26,7 @@ public:
     void Bind();
 
 private:
-    struct Entry {
-        GLuint binding_index{};
-        const GLuint* buffer{};
-        GLintptr offset{};
-        GLsizei stride{};
-    };
+    struct Entry;
 
     GLuint vao{};
     const GLuint* index_buffer{};
@@ -50,12 +45,7 @@ public:
     void Bind();
 
 private:
-    struct Entry {
-        GLuint binding;
-        const GLuint* buffer;
-        GLintptr offset;
-        GLsizeiptr size;
-    };
+    struct Entry;
 
     GLenum target;
     std::vector<Entry> entries;