source/blender/render/hydra/viewport_engine.cc

@@ -12,7 +12,7 @@
 #include "BKE_camera.h"
 #include "BLI_math_matrix.h"
 #include "DEG_depsgraph_query.h"
-#include "GPU_batch.h"
+#include "GPU_matrix.h"
 // clang-format on
 
 #include "camera.h"
@@ -132,18 +132,30 @@ pxr::GfCamera ViewSettings::gf_camera()
                                             (float)border[3] / screen_height));
 }
 
-GLTexture::GLTexture() : texture(nullptr), width(0), height(0), channels(4)
+DrawTexture::DrawTexture() : texture(nullptr), width(0), height(0), channels(4)
 {
+  float coords[8] = {0.0, 0.0, 1.0, 0.0, 1.0, 1.0, 0.0, 1.0};
+
+  GPUVertFormat format = {0};
+  GPU_vertformat_attr_add(&format, "pos", GPU_COMP_F32, 2, GPU_FETCH_FLOAT);
+  GPU_vertformat_attr_add(&format, "texCoord", GPU_COMP_F32, 2, GPU_FETCH_FLOAT);
+  GPUVertBuf *vbo = GPU_vertbuf_create_with_format(&format);
+  GPU_vertbuf_data_alloc(vbo, 4);
+  GPU_vertbuf_attr_fill(vbo, 0, coords);
+  GPU_vertbuf_attr_fill(vbo, 1, coords);
+
+  batch = GPU_batch_create_ex(GPU_PRIM_TRI_FAN, vbo, nullptr, GPU_BATCH_OWNS_VBO);
 }
 
-GLTexture::~GLTexture()
+DrawTexture::~DrawTexture()
 {
   if (texture) {
     free();
   }
+  GPU_batch_discard(batch);
 }
 
-void GLTexture::set_buffer(pxr::HdRenderBuffer *buffer)
+void DrawTexture::set_buffer(pxr::HdRenderBuffer *buffer)
 {
   if (!texture) {
     create(buffer);
@@ -161,53 +173,44 @@ void GLTexture::set_buffer(pxr::HdRenderBuffer *buffer)
   buffer->Unmap();
 }
 
-void GLTexture::create(pxr::HdRenderBuffer *buffer)
+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("HydraRendeViewport",
-                                      width,
-                                      height,
-                                      1,
-                                      GPU_RGBA16F,
-                                      GPU_TEXTURE_USAGE_GENERAL,
-                                      (float *)data);
+                                  width,
+                                  height,
+                                  1,
+                                  GPU_RGBA16F,
+                                  GPU_TEXTURE_USAGE_GENERAL,
+                                  (float *)data);
   buffer->Unmap();
 
   GPU_texture_filter_mode(texture, true);
   GPU_texture_wrap_mode(texture, true, true);
 }
 
-void GLTexture::free()
+void DrawTexture::free()
 {
   GPU_texture_free(texture);
   texture = nullptr;
 }
 
-void GLTexture::draw(GPUShader *shader, float x, float y)
+void DrawTexture::draw(GPUShader *shader, float x, float y)
 {
-  float position[8] = {x, y, x + width, y, x + width, y + height, x, y + height};
-  float texcoord[8] = {0.0, 0.0, 1.0, 0.0, 1.0, 1.0, 0.0, 1.0};
-
-  GPUVertFormat format = {0};
-  GPU_vertformat_attr_add(&format, "pos", GPU_COMP_F32, 2, GPU_FETCH_FLOAT);
-  GPU_vertformat_attr_add(&format, "texCoord", GPU_COMP_F32, 2, GPU_FETCH_FLOAT);
-  GPUVertBuf *vbo = GPU_vertbuf_create_with_format(&format);
-  GPU_vertbuf_data_alloc(vbo, 4);
-  GPU_vertbuf_attr_fill(vbo, 0, position);
-  GPU_vertbuf_attr_fill(vbo, 1, texcoord);
-
   int slot = GPU_shader_get_sampler_binding(shader, "image");
   GPU_texture_bind(texture, slot);
   GPU_shader_uniform_1i(shader, "image", slot);
 
-  GPUBatch *gpu_batch = GPU_batch_create_ex(GPU_PRIM_TRI_FAN, vbo, nullptr, GPU_BATCH_OWNS_VBO);
-  GPU_batch_set_shader(gpu_batch, shader);
-  GPU_batch_draw(gpu_batch);
-
-  GPU_batch_discard(gpu_batch);
+  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 ViewportEngine::sync(Depsgraph *depsgraph,
@@ -268,8 +271,8 @@ void ViewportEngine::render(Depsgraph *depsgraph, bContext *context)
     engine->Execute(render_index.get(), &tasks);
 
     if ((bl_engine->type->flag & RE_USE_GPU_CONTEXT) == 0) {
-      texture.set_buffer(render_task_delegate->get_renderer_aov(pxr::HdAovTokens->color));
-      texture.draw(shader, view_settings.border[0], view_settings.border[1]);
+      draw_texture.set_buffer(render_task_delegate->get_renderer_aov(pxr::HdAovTokens->color));
+      draw_texture.draw(shader, view_settings.border[0], view_settings.border[1]);
     }
   }
 

source/blender/render/hydra/viewport_engine.h

@@ -7,17 +7,18 @@
 
 #include <pxr/imaging/hd/renderBuffer.h>
 
-#include "GPU_texture.h"
+#include "GPU_batch.h"
 #include "GPU_shader.h"
+#include "GPU_texture.h"
 
 #include "engine.h"
 
 namespace blender::render::hydra {
 
-class GLTexture {
+class DrawTexture {
  public:
-  GLTexture();
-  ~GLTexture();
+  DrawTexture();
+  ~DrawTexture();
   void set_buffer(pxr::HdRenderBuffer *buffer);
   void draw(GPUShader *shader, float x, float y);
 
@@ -26,6 +27,7 @@ class GLTexture {
   void free();
 
   GPUTexture *texture;
+  GPUBatch *batch;
   int width, height, channels;
 };
 
@@ -44,7 +46,7 @@ class ViewportEngine : public Engine {
  private:
   std::chrono::time_point<std::chrono::steady_clock> time_begin;
 
-  GLTexture texture;
+  DrawTexture draw_texture;
 };
 
 }  // namespace blender::render::hydra