Starting to expose the number of changes to the input format

examples/utilities/render/stats.qml

@@ -173,6 +173,11 @@ Item {
                     prop: "frameSetPipelineCount",
                     label: "Pipelines",
                     color: "#E2334D"
+                },
+                {
+                    prop: "frameSetInputFormatCount",
+                    label: "Input Formats",
+                    color: "#1AC567"
                 }
             ]
         }  

libraries/gpu/src/gpu/GLBackendInput.cpp

@@ -12,13 +12,34 @@
 
 using namespace gpu;
 
+
+GLBackend::GLInputFormat::GLInputFormat() {
+}
+
+GLBackend::GLInputFormat:: ~GLInputFormat() {
+
+}
+
+GLBackend::GLInputFormat* GLBackend::syncGPUObject(const Stream::Format& inputFormat) {
+    GLInputFormat* object = Backend::getGPUObject<GLBackend::GLInputFormat>(inputFormat);
+
+    if (object) {
+        return object;
+    }
+
+    object = new GLInputFormat();
+    Backend::setGPUObject(inputFormat, object);
+}
+
 void GLBackend::do_setInputFormat(Batch& batch, size_t paramOffset) {
     Stream::FormatPointer format = batch._streamFormats.get(batch._params[paramOffset]._uint);
-
+    GLInputFormat* ifo = GLBackend::syncGPUObject(*format);
+    if (ifo) {
         if (format != _input._format) {
             _input._format = format;
             _input._invalidFormat = true;
         }
+    }
 }
 
 void GLBackend::do_setInputBuffer(Batch& batch, size_t paramOffset) {
@@ -89,7 +110,7 @@ void GLBackend::syncInputStateCache() {
 // Core 41 doesn't expose the features to really separate the vertex format from the vertex buffers binding
 // Core 43 does :)
 // FIXME crashing problem with glVertexBindingDivisor / glVertexAttribFormat
-#if 1 || (GPU_INPUT_PROFILE == GPU_CORE_41)
+#if(GPU_INPUT_PROFILE == GPU_CORE_41)
 #define NO_SUPPORT_VERTEX_ATTRIB_FORMAT
 #else
 #define SUPPORT_VERTEX_ATTRIB_FORMAT

libraries/render/src/render/EngineStats.cpp

@@ -50,6 +50,7 @@ void EngineStats::run(const SceneContextPointer& sceneContext, const RenderConte
     config->frameTextureMemoryUsage = _gpuStats._RSAmountTextureMemoryBounded - gpuStats._RSAmountTextureMemoryBounded;
 
     config->frameSetPipelineCount = _gpuStats._PSNumSetPipelines - gpuStats._PSNumSetPipelines;
+    config->frameSetInputFormatCount = _gpuStats._ISNumFormatChanges - gpuStats._ISNumFormatChanges;
 
     config->emitDirty();
 }

libraries/render/src/render/EngineStats.h

@@ -48,6 +48,7 @@ namespace render {
         Q_PROPERTY(quint32 frameTextureMemoryUsage MEMBER frameTextureMemoryUsage NOTIFY dirty)
 
         Q_PROPERTY(quint32 frameSetPipelineCount MEMBER frameSetPipelineCount NOTIFY dirty)
+        Q_PROPERTY(quint32 frameSetInputFormatCount MEMBER frameSetInputFormatCount NOTIFY dirty)
 
 
     public:
@@ -78,6 +79,8 @@ namespace render {
 
         quint32 frameSetPipelineCount{ 0 };
 
+        quint32 frameSetInputFormatCount{ 0 };
+
 
 
         void emitDirty() { emit dirty(); }