Fixed c_renderer_pipeline::end.

Added i_frame_buffer::set_from_external.
Added stored_frame_buffer in i_state_pipeline.

Author: 0suddenly0

backends/directx11/src/null-render-backend-directx11.h

@@ -158,7 +158,7 @@ namespace ntl::render::directx11 {
                 context->ClearState();
                 backend::renderer->create_objects();
 
-                auto res = swap_chain->ResizeBuffers(0, render::shared::viewport.x, render::shared::viewport.y, DXGI_FORMAT_UNKNOWN, 0);
+                HRESULT res = swap_chain->ResizeBuffers(0, render::shared::viewport.x, render::shared::viewport.y, DXGI_FORMAT_UNKNOWN, 0);
                 backend::renderer->end_resize_viewport();
                 resize_buffers = false;
             }

backends/directx11/src/null-render-backend-directx11/internal/frame-buffer/frame-buffer.cpp

@@ -1,8 +1,21 @@
 #include "frame-buffer.h"
 
 namespace ntl::render::directx11 {
+    void c_frame_buffer::set_from_external(void* external_resource) {
+        if(render_target == external_resource) return;
+        if(render_target) destroy();
+        render_target = (ID3D11RenderTargetView*)external_resource;
+        render_target->AddRef();
+
+        ID3D11Resource* resource{ };
+        render_target->GetResource(&resource);
+        resource->QueryInterface<ID3D11Texture2D>(&render_target_texture);
+        resource->Release();
+    }
+
     void c_frame_buffer::create() {
         if(!empty()) return;
+        if(type == backend::e_frame_buffer_type::external) return;
 
         //@note: creating texture for render target
         if(type == backend::e_frame_buffer_type::postprocessing) {

backends/directx11/src/null-render-backend-directx11/internal/frame-buffer/frame-buffer.h

@@ -16,6 +16,8 @@ namespace ntl::render::directx11 {
         void* get_surface() override { return render_target_texture; }
         void* get_texture() override { return shader_resource_view; }
 
+        void set_from_external(void* external_resource) override;
+
     public:
         void create() override;
         void destroy() override;

backends/directx11/src/null-render-backend-directx11/state-pipeline/state-pipeline.cpp

@@ -14,6 +14,7 @@ namespace ntl::render::directx11 {
 
     void c_state_pipeline::save_state() {
         shared.context->OMGetRenderTargets(1, &saved_state.render_target_view, &saved_state.depth_stencil_view);
+        stored_frame_buffer->set_from_external(saved_state.render_target_view);
 
         saved_state.scissor_rects_count = saved_state.viewports_count = D3D11_VIEWPORT_AND_SCISSORRECT_OBJECT_COUNT_PER_PIPELINE;
         shared.context->RSGetScissorRects(&saved_state.scissor_rects_count, saved_state.scissor_rects);

backends/directx9/src/null-render-backend-directx9/internal/frame-buffer/frame-buffer.cpp

@@ -1,8 +1,16 @@
 #include "frame-buffer.h"
 
 namespace ntl::render::directx9 {
+    void c_frame_buffer::set_from_external(void* external_resource) {
+        if(surface == external_resource) return;
+        if(surface) destroy();
+        surface = (IDirect3DSurface9*)external_resource;
+        surface->AddRef();
+    }
+
     void c_frame_buffer::create() {
         if(!empty()) return;
+        if(type == backend::e_frame_buffer_type::external) return;
 
         //@note: creating texture for render target
         if(type == backend::e_frame_buffer_type::postprocessing) {

backends/directx9/src/null-render-backend-directx9/internal/frame-buffer/frame-buffer.h

@@ -13,6 +13,8 @@ namespace ntl::render::directx9 {
         void* get_surface() override { return surface; }
         void* get_texture() override { return texture; }
 
+        void set_from_external(void* external_resource) override;
+
     public:
         void create() override;
         void destroy() override;

backends/directx9/src/null-render-backend-directx9/state-pipeline/state-pipeline.cpp

@@ -56,6 +56,8 @@ namespace ntl::render::directx9 {
         shared.device->GetVertexDeclaration(&vertex_declaration);
         shared.device->GetStreamSource(0, &vertex_buffer, &vertex_offset, &vertex_stride);
         shared.device->GetIndices(&index_buffer);
+
+        stored_frame_buffer->set_from_external(framebuffer);
     }
 
     void c_state_pipeline::restore_state() {

backends/opengl3/src/null-render-backend-opengl3/internal/frame-buffer/frame-buffer.cpp

@@ -4,6 +4,7 @@
 namespace ntl::render::opengl3 {
     void c_frame_buffer::create() {
         if(!empty()) return;
+        if(type == backend::e_frame_buffer_type::external) return;
 
         if(type == backend::e_frame_buffer_type::postprocessing) {
             opengl::gen_framebuffers(1, &fbo);

backends/opengl3/src/null-render-backend-opengl3/internal/frame-buffer/frame-buffer.h

@@ -11,6 +11,8 @@ namespace ntl::render::opengl3 {
         void* get_surface() override { return (void*)fbo; }
         void* get_texture() override { return (void*)fbo_attachment; }
 
+        void set_from_external(void* external_resource) override { fbo = (std::uint32_t)external_resource; }
+
     public:
         void create() override;
         void destroy() override;

backends/opengl3/src/null-render-backend-opengl3/state-pipeline/state-pipeline.cpp

@@ -63,6 +63,8 @@ namespace ntl::render::opengl3 {
         //@note: rasterizer save
         saved_rasterizer.enable_scissor_test = opengl::is_enabled(opengl::e_scissor_test);
         saved_rasterizer.enable_multisample = opengl::is_enabled(opengl::e_multisample);
+
+        stored_frame_buffer->set_from_external((void*)saved_state.draw_fbo);
     }
 
     void c_state_pipeline::restore_state() {