source/blender/render/hydra/final_engine.cc

@@ -41,20 +41,23 @@ void FinalEngine::render(Depsgraph *depsgraph)
   pxr::GfCamera camera =
       CameraData(scene->camera, image_res, pxr::GfVec4f(0, 0, 1, 1)).gf_camera(border);
 
-  pxr::HdTaskSharedPtrVector tasks;
   free_camera_delegate_->SetCamera(camera);
   render_task_delegate_->set_viewport(pxr::GfVec4d(0, 0, resolution_[0], resolution_[1]));
   if (light_tasks_delegate_) {
     light_tasks_delegate_->set_viewport(pxr::GfVec4d(0, 0, resolution_[0], resolution_[1]));
+  }
+
+  render_task_delegate_->add_aov(pxr::HdAovTokens->color);
+  render_task_delegate_->add_aov(pxr::HdAovTokens->depth);
+
+  render_task_delegate_->bind();
+
+  pxr::HdTaskSharedPtrVector tasks;
+  if (light_tasks_delegate_) {
     tasks.push_back(light_tasks_delegate_->skydome_task());
     tasks.push_back(light_tasks_delegate_->simple_task());
   }
   tasks.push_back(render_task_delegate_->task());
-
-  render_task_delegate_->add_aov(pxr::HdAovTokens->color);
-  render_task_delegate_->add_aov(pxr::HdAovTokens->depth);
-  render_task_delegate_->bind();
-
   engine_->Execute(render_index_.get(), &tasks);
 
   char elapsed_time[32];
@@ -106,7 +109,7 @@ void FinalEngine::update_render_result()
     else if (STREQ(pass->name, "Depth")) {
       aov_key = pxr::HdAovTokens->depth;
     }
-    render_task_delegate_->get_aov_data(aov_key, pass->ibuf->float_buffer.data);
+    render_task_delegate_->read_aov(aov_key, pass->ibuf->float_buffer.data);
   }
 
   RE_engine_end_result(bl_engine_, result, false, false, false);

source/blender/render/hydra/render_task_delegate.cc

@@ -107,7 +107,7 @@ void RenderTaskDelegate::add_aov(pxr::TfToken const &aov_key)
   render_index.GetChangeTracker().MarkTaskDirty(task_id_, pxr::HdChangeTracker::DirtyParams);
 }
 
-void RenderTaskDelegate::get_aov_data(pxr::TfToken const &aov_key, void *data)
+void RenderTaskDelegate::read_aov(pxr::TfToken const &aov_key, void *data)
 {
   pxr::HdRenderBuffer *buffer = (pxr::HdRenderBuffer *)GetRenderIndex().GetBprim(
       pxr::HdPrimTypeTokens->renderBuffer, buffer_id(aov_key));
@@ -141,10 +141,12 @@ void GPURenderTaskDelegate::set_viewport(pxr::GfVec4d const &viewport)
 
   if (tex_color_) {
     GPU_texture_free(tex_color_);
+    tex_color_ = nullptr;
     add_aov(pxr::HdAovTokens->color);
   }
   if (tex_depth_) {
     GPU_texture_free(tex_depth_);
+    tex_depth_ = nullptr;
     add_aov(pxr::HdAovTokens->depth);
   }
 }
@@ -165,6 +167,10 @@ void GPURenderTaskDelegate::add_aov(pxr::TfToken const &aov_key)
     return;
   }
 
+  if (*tex) {
+    return;
+  }
+
   *tex = GPU_texture_create_2d(("tex_render_hydra_" + aov_key.GetString()).c_str(),
                                task_params_.viewport[2] - task_params_.viewport[0],
                                task_params_.viewport[3] - task_params_.viewport[1],
@@ -174,7 +180,7 @@ void GPURenderTaskDelegate::add_aov(pxr::TfToken const &aov_key)
                                nullptr);
 }
 
-void GPURenderTaskDelegate::get_aov_data(pxr::TfToken const &aov_key, void *data)
+void GPURenderTaskDelegate::read_aov(pxr::TfToken const &aov_key, void *data)
 {
   GPUTexture *tex = nullptr;
   int c;
@@ -218,7 +224,7 @@ void GPURenderTaskDelegate::bind()
 
 void GPURenderTaskDelegate::unbind()
 {
-  glDeleteVertexArrays(1, &VAO_);
+  //glDeleteVertexArrays(1, &VAO_);
   GPU_framebuffer_free(framebuffer_);
   GPU_texture_free(tex_color_);
   GPU_texture_free(tex_depth_);

source/blender/render/hydra/render_task_delegate.h

@@ -26,7 +26,7 @@ class RenderTaskDelegate : public pxr::HdSceneDelegate {
   void set_camera(pxr::SdfPath const &camera_id);
   virtual void set_viewport(pxr::GfVec4d const &viewport);
   virtual void add_aov(pxr::TfToken const &aov_key);
-  virtual void get_aov_data(pxr::TfToken const &aov_key, void *data);
+  virtual void read_aov(pxr::TfToken const &aov_key, void *data);
   virtual void bind();
   virtual void unbind();
 
@@ -45,7 +45,7 @@ class GPURenderTaskDelegate : public RenderTaskDelegate {
 
   void set_viewport(pxr::GfVec4d const &viewport) override;
   void add_aov(pxr::TfToken const &aov_key) override;
-  void get_aov_data(pxr::TfToken const &aov_key, void *data) override;
+  void read_aov(pxr::TfToken const &aov_key, void *data) override;
   void bind() override;
   void unbind() override;
 

source/blender/render/hydra/viewport_engine.cc

@@ -5,19 +5,15 @@
 #include <pxr/imaging/glf/drawTarget.h>
 #include <pxr/usd/usdGeom/camera.h>
 
-#include "DNA_camera_types.h"
-#include "DNA_screen_types.h"
 #include "DNA_vec_types.h" /* this include must be before BKE_camera.h due to "rctf" type */
 
+#include "DNA_camera_types.h"
+#include "DNA_screen_types.h"
 #include "BKE_camera.h"
-
 #include "BLI_math_matrix.h"
 #include "BLI_timecode.h"
-
 #include "DEG_depsgraph_query.h"
-
 #include "GPU_matrix.h"
-
 #include "PIL_time.h"
 
 #include "camera.h"
@@ -136,7 +132,7 @@ pxr::GfCamera ViewSettings::gf_camera()
                                             (float)border[3] / screen_height));
 }
 
-DrawTexture::DrawTexture() : texture_(nullptr), width_(0), height_(0), channels_(4)
+DrawTexture::DrawTexture()
 {
   float coords[8] = {0.0, 0.0, 1.0, 0.0, 1.0, 1.0, 0.0, 1.0};
 
@@ -154,67 +150,50 @@ DrawTexture::DrawTexture() : texture_(nullptr), width_(0), height_(0), channels_
 DrawTexture::~DrawTexture()
 {
   if (texture_) {
-    free();
+    GPU_texture_free(texture_);
   }
   GPU_batch_discard(batch_);
 }
 
-void DrawTexture::set_buffer(pxr::HdRenderBuffer *buffer)
+void DrawTexture::write_data(int width, int height, const void *data)
 {
-  if (!texture_) {
+  if (texture_ && width == GPU_texture_width(texture_) && height == GPU_texture_height(texture_)) {
-    create(buffer);
-    return;
-  }
-
-  if (width_ != buffer->GetWidth() || height_ != buffer->GetHeight()) {
-    free();
-    create(buffer);
-    return;
-  }
-
-  void *data = buffer->Map();
     GPU_texture_update(texture_, GPU_DATA_FLOAT, data);
-  buffer->Unmap();
+    return;
   }
 
-void DrawTexture::draw(GPUShader *shader, float x, float y)
+  if (texture_ ) {
-{
+    GPU_texture_free(texture_);
-  int slot = GPU_shader_get_sampler_binding(shader, "image");
-  GPU_texture_bind(texture_, slot);
-  GPU_shader_uniform_1i(shader, "image", slot);
-
-  GPU_matrix_push();
-  GPU_matrix_translate_2f(x, y);
-  GPU_matrix_scale_2f(width_, height_);
-  GPU_batch_set_shader(batch_, shader);
-  GPU_batch_draw(batch_);
-  GPU_matrix_pop();
   }
 
-void DrawTexture::create(pxr::HdRenderBuffer *buffer)
-{
-  width_ = buffer->GetWidth();
-  height_ = buffer->GetHeight();
-  channels_ = pxr::HdGetComponentCount(buffer->GetFormat());
-
-  void *data = buffer->Map();
   texture_ = GPU_texture_create_2d("tex_hydra_render_viewport",
-                                   width_,
+                                   width,
-                                   height_,
+                                   height,
                                    1,
                                    GPU_RGBA16F,
                                    GPU_TEXTURE_USAGE_GENERAL,
                                    (float *)data);
-  buffer->Unmap();
-
   GPU_texture_filter_mode(texture_, true);
   GPU_texture_mipmap_mode(texture_, true, true);
 }
 
-void DrawTexture::free()
+void DrawTexture::draw(GPUShader *shader, const pxr::GfVec4d &viewport)
 {
-  GPU_texture_free(texture_);
+  draw(shader, texture_, viewport);
-  texture_ = nullptr;
+}
+
+void DrawTexture::draw(GPUShader *shader, GPUTexture *tex, const pxr::GfVec4d &viewport)
+{
+  int slot = GPU_shader_get_sampler_binding(shader, "image");
+  GPU_texture_bind(tex, slot);
+  GPU_shader_uniform_1i(shader, "image", slot);
+
+  GPU_matrix_push();
+  GPU_matrix_translate_2f(viewport[0], viewport[1]);
+  GPU_matrix_scale_2f(viewport[2] - viewport[0], viewport[3] - viewport[1]);
+  GPU_batch_set_shader(batch_, shader);
+  GPU_batch_draw(batch_);
+  GPU_matrix_pop();
 }
 
 void ViewportEngine::render(Depsgraph * /* depsgraph */)
@@ -231,16 +210,14 @@ void ViewportEngine::render(Depsgraph * /* depsgraph */, bContext *context)
 
   pxr::GfCamera gf_camera = view_settings.gf_camera();
   free_camera_delegate_->SetCamera(gf_camera);
-  render_task_delegate_->set_viewport(pxr::GfVec4d(view_settings.border[0],
-                                                   view_settings.border[1],
-                                                   view_settings.border[2],
-                                                   view_settings.border[3]));
 
-  if (light_tasks_delegate_) {
+  pxr::GfVec4d viewport(view_settings.border[0],
-    light_tasks_delegate_->set_viewport(pxr::GfVec4d(view_settings.border[0],
                         view_settings.border[1],
                         view_settings.border[2],
-                                                     view_settings.border[3]));
+                        view_settings.border[3]);
+  render_task_delegate_->set_viewport(viewport);
+  if (light_tasks_delegate_) {
+    light_tasks_delegate_->set_viewport(viewport);
   }
 
   if ((bl_engine_->type->flag & RE_USE_GPU_CONTEXT) == 0) {
@@ -256,12 +233,13 @@ void ViewportEngine::render(Depsgraph * /* depsgraph */, bContext *context)
     tasks.push_back(light_tasks_delegate_->simple_task());
   }
   tasks.push_back(render_task_delegate_->task());
-
   engine_->Execute(render_index_.get(), &tasks);
 
   if ((bl_engine_->type->flag & RE_USE_GPU_CONTEXT) == 0) {
-    //draw_texture_.set_buffer(render_task_delegate_->get_aov(pxr::HdAovTokens->color));
+    std::vector<float> data(view_settings.width() * view_settings.height() * 4, 0.0f);
-    draw_texture_.draw(shader, view_settings.border[0], view_settings.border[1]);
+    render_task_delegate_->read_aov(pxr::HdAovTokens->color, data.data());
+    draw_texture_.write_data(view_settings.width(), view_settings.height(), data.data());
+    draw_texture_.draw(shader, viewport);
   }
 
   GPU_shader_unbind();

source/blender/render/hydra/viewport_engine.h

@@ -18,16 +18,13 @@ class DrawTexture {
   DrawTexture();
   ~DrawTexture();
 
-  void set_buffer(pxr::HdRenderBuffer *buffer);
+  void write_data(int width, int height, const void *data);
-  void draw(GPUShader *shader, float x, float y);
+  void draw(GPUShader *shader, const pxr::GfVec4d &viewport);
+  void draw(GPUShader *shader, GPUTexture *tex, const pxr::GfVec4d &viewport);
 
  private:
-  void create(pxr::HdRenderBuffer *buffer);
+  GPUTexture *texture_ = nullptr;
-  void free();
-
-  GPUTexture *texture_;
   GPUBatch *batch_;
-  int width_, height_, channels_;
 };
 
 class ViewportEngine : public Engine {