Prototyping the ResourceBuffer with the DrawBounds Job, yeah

libraries/render/src/render/DrawTask.cpp

@@ -166,6 +166,18 @@ void DrawBounds::run(const SceneContextPointer& sceneContext, const RenderContex
     const Inputs& items) {
     RenderArgs* args = renderContext->args;
 
+    auto numItems = items.size();
+    if (numItems == 0) {
+        return;
+    }
+
+    static const uint32_t sizeOfItemBound = sizeof(ItemBound);
+    if (!_drawBuffer) {
+        _drawBuffer = std::make_shared<gpu::Buffer>(sizeOfItemBound);
+    }
+    
+    _drawBuffer->setData(numItems * sizeOfItemBound, (const gpu::Byte*) items.data());
+
     gpu::doInBatch(args->_context, [&](gpu::Batch& batch) {
         args->_batch = &batch;
 
@@ -180,17 +192,23 @@ void DrawBounds::run(const SceneContextPointer& sceneContext, const RenderContex
 
         // Bind program
         batch.setPipeline(getPipeline());
-        assert(_cornerLocation >= 0);
-        assert(_scaleLocation >= 0);
+//        assert(_cornerLocation >= 0);
+   //     assert(_scaleLocation >= 0);
 
         // Render bounds
-        for (const auto& item : items) {
+       /* for (const auto& item : items) {
             batch._glUniform3fv(_cornerLocation, 1, (const float*)(&item.bound.getCorner()));
             batch._glUniform3fv(_scaleLocation, 1, (const float*)(&item.bound.getScale()));
 
             static const int NUM_VERTICES_PER_CUBE = 24;
             batch.draw(gpu::LINES, NUM_VERTICES_PER_CUBE, 0);
         }
+        */
+
+        batch.setResourceBuffer(0, _drawBuffer);
+
+        static const int NUM_VERTICES_PER_CUBE = 24;
+        batch.draw(gpu::LINES, NUM_VERTICES_PER_CUBE * numItems, 0);
     });
 }
 

libraries/render/src/render/DrawTask.h

@@ -67,6 +67,7 @@ private:
     gpu::PipelinePointer _boundsPipeline;
     int _cornerLocation { -1 };
     int _scaleLocation { -1 };
+    gpu::BufferPointer _drawBuffer;
 };
 
 }

libraries/render/src/render/Item.h

@@ -227,6 +227,7 @@ class ItemBound {
 
         ItemID id;
         AABox bound;
+        uint32_t padding;
 };
 
 // many Item Bounds in a vector

libraries/render/src/render/drawItemBounds.slv

@@ -22,8 +22,14 @@ uniform vec3 inBoundPos;
 uniform vec3 inBoundDim;
 uniform ivec4 inCellLocation;
 
+
+struct ItemBound {
+    vec4 id_boundPos;
+    vec4 boundDim_s;
+};
+
 layout(std140) buffer ssbo0Buffer {
-    vec4 perBoundData[];
+    ItemBound bounds[];
 };
 
 
@@ -55,11 +61,17 @@ void main(void) {
         0, 4,
         1, 5
     );
-    vec4 cubeVec = UNIT_BOX[UNIT_BOX_LINE_INDICES[gl_VertexID]];
 
-    vec4 offset = perBoundData[gl_VertexID];
+    int boundID = gl_VertexID / 24;
+    int vertexID = gl_VertexID - boundID * 24;
 
-    vec4 pos = vec4(inBoundPos + inBoundDim * cubeVec.xyz, 1.0);
+    vec4 cubeVec = UNIT_BOX[UNIT_BOX_LINE_INDICES[vertexID]];
+
+    ItemBound bound = bounds[boundID];
+    vec3 boundPos = bound.id_boundPos.yzw;
+    vec3 boundDim = bound.boundDim_s.xyz;
+
+    vec4 pos = vec4(boundPos + boundDim * cubeVec.xyz, 1.0);
 
     // standard transform
     TransformCamera cam = getTransformCamera();
@@ -68,7 +80,7 @@ void main(void) {
 
     bool subcell = bool((inCellLocation.z));
     float cellDepth = float(inCellLocation.w);
-    varColor = vec4(colorWheel(fract(cellDepth / 5.0)), 1.0 - float(subcell)) + offset;
-    varTexcoord = vec2(cubeVec.w, length(inBoundDim));
+    varColor = vec4(colorWheel(fract(cellDepth / 5.0)), 1.0 - float(subcell));
+    varTexcoord = vec2(cubeVec.w, length(boundDim));
 
 }