1 files changed, 43 insertions, 5 deletions

diff --git a/src/video_core/renderer_opengl/utils.cpp b/src/video_core/renderer_opengl/utils.cpp
index 68c36988d..c504a2c1a 100644
--- a/src/video_core/renderer_opengl/utils.cpp
+++ b/src/video_core/renderer_opengl/utils.cpp
@@ -13,29 +13,67 @@
 
 namespace OpenGL {
 
+VertexArrayPushBuffer::VertexArrayPushBuffer() = default;
+
+VertexArrayPushBuffer::~VertexArrayPushBuffer() = default;
+
+void VertexArrayPushBuffer::Setup(GLuint vao_) {
+    vao = vao_;
+    index_buffer = nullptr;
+    vertex_buffers.clear();
+}
+
+void VertexArrayPushBuffer::SetIndexBuffer(const GLuint* buffer) {
+    index_buffer = buffer;
+}
+
+void VertexArrayPushBuffer::SetVertexBuffer(GLuint binding_index, const GLuint* buffer,
+                                            GLintptr offset, GLsizei stride) {
+    vertex_buffers.push_back(Entry{binding_index, buffer, offset, stride});
+}
+
+void VertexArrayPushBuffer::Bind() {
+    if (index_buffer) {
+        glVertexArrayElementBuffer(vao, *index_buffer);
+    }
+
+    // TODO(Rodrigo): Find a way to ARB_multi_bind this
+    for (const auto& entry : vertex_buffers) {
+        glVertexArrayVertexBuffer(vao, entry.binding_index, *entry.buffer, entry.offset,
+                                  entry.stride);
+    }
+}
+
 BindBuffersRangePushBuffer::BindBuffersRangePushBuffer(GLenum target) : target{target} {}
 
 BindBuffersRangePushBuffer::~BindBuffersRangePushBuffer() = default;
 
 void BindBuffersRangePushBuffer::Setup(GLuint first_) {
     first = first_;
-    buffers.clear();
+    buffer_pointers.clear();
     offsets.clear();
     sizes.clear();
 }
 
-void BindBuffersRangePushBuffer::Push(GLuint buffer, GLintptr offset, GLsizeiptr size) {
-    buffers.push_back(buffer);
+void BindBuffersRangePushBuffer::Push(const GLuint* buffer, GLintptr offset, GLsizeiptr size) {
+    buffer_pointers.push_back(buffer);
     offsets.push_back(offset);
     sizes.push_back(size);
 }
 
-void BindBuffersRangePushBuffer::Bind() const {
-    const std::size_t count{buffers.size()};
+void BindBuffersRangePushBuffer::Bind() {
+    // Ensure sizes are valid.
+    const std::size_t count{buffer_pointers.size()};
     DEBUG_ASSERT(count == offsets.size() && count == sizes.size());
     if (count == 0) {
         return;
     }
+
+    // Dereference buffers.
+    buffers.resize(count);
+    std::transform(buffer_pointers.begin(), buffer_pointers.end(), buffers.begin(),
+                   [](const GLuint* pointer) { return *pointer; });
+
     glBindBuffersRange(target, first, static_cast<GLsizei>(count), buffers.data(), offsets.data(),
                        sizes.data());
 }