adding hit effect logic

libraries/render-utils/src/HitEffect.cpp

@@ -0,0 +1,105 @@
+//
+//  HitEffect.cpp
+//  interface/src/renderer
+//
+//  Created by Andrzej Kapolka on 7/14/13.
+//  Copyright 2013 High Fidelity, Inc.
+//
+//  Distributed under the Apache License, Version 2.0.
+//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
+//
+
+// include this before QOpenGLFramebufferObject, which includes an earlier version of OpenGL
+#include <gpu/GPUConfig.h>
+
+#include <gpu/GLBackend.h>
+
+#include <glm/gtc/random.hpp>
+
+#include <PathUtils.h>
+#include <SharedUtil.h>
+
+#include "AbstractViewStateInterface.h"
+#include "HitEffect.h"
+#include "ProgramObject.h"
+#include "RenderUtil.h"
+#include "TextureCache.h"
+#include "DependencyManager.h"
+#include "ViewFrustum.h"
+#include "GeometryCache.h"
+
+#include "hit_effect_vert.h"
+#include "hit_effect_frag.h"
+
+
+HitEffect::HitEffect() {
+}
+
+const gpu::PipelinePointer& HitEffect::getHitEffectPipeline() {
+    if (!_hitEffectPipeline) {
+        auto vs = gpu::ShaderPointer(gpu::Shader::createVertex(std::string(hit_effect_vert)));
+        auto ps = gpu::ShaderPointer(gpu::Shader::createPixel(std::string(hit_effect_frag)));
+        gpu::ShaderPointer program = gpu::ShaderPointer(gpu::Shader::createProgram(vs, ps));
+        
+        
+        gpu::Shader::BindingSet slotBindings;
+        gpu::Shader::makeProgram(*program, slotBindings);
+        
+        _screenSizeLocation = program->getUniforms().findLocation("screenSize");
+        
+        gpu::StatePointer state = gpu::StatePointer(new gpu::State());
+        
+        state->setDepthTest(false, false, gpu::LESS_EQUAL);
+        
+        // Blend on transparent
+        state->setBlendFunction(true,
+                                gpu::State::SRC_ALPHA, gpu::State::BLEND_OP_ADD, gpu::State::INV_SRC_ALPHA);
+        
+        
+        // Good to go add the brand new pipeline
+        _hitEffectPipeline.reset(gpu::Pipeline::create(program, state));
+    }
+    return _hitEffectPipeline;
+}
+
+
+
+
+void HitEffect::run(const render::SceneContextPointer& sceneContext, const render::RenderContextPointer& renderContext) {
+    
+    // create a simple pipeline that does:
+    
+    assert(renderContext->args);
+    assert(renderContext->args->_viewFrustum);
+    RenderArgs* args = renderContext->args;
+    
+    // Allright, something to render let's do it
+    gpu::Batch batch;
+    
+    glm::mat4 projMat;
+    Transform viewMat;
+    args->_viewFrustum->evalProjectionMatrix(projMat);
+    args->_viewFrustum->evalViewTransform(viewMat);
+    batch.setProjectionTransform(projMat);
+    batch.setViewTransform(viewMat);
+    batch.setModelTransform(Transform());
+    
+
+
+    
+    // bind the first gpu::Pipeline we need - for calculating occlusion buffer
+    batch.setPipeline(getHitEffectPipeline());
+
+    
+    glm::vec4 color(0.0f, 0.0f, 0.0f, 1.0f);
+    glm::vec2 bottomLeft(-1.0f, -1.0f);
+    glm::vec2 topRight(1.0f, 1.0f);
+    DependencyManager::get<GeometryCache>()->renderQuad(batch, bottomLeft, topRight, color);
+
+    
+    // Ready to render
+    renderContext->args->_context->syncCache();
+    args->_context->render((batch));
+    
+}
+

libraries/render-utils/src/HitEffect.h

@@ -0,0 +1,34 @@
+//
+//  hitEffect.h
+//  hifi
+//
+//  Created by eric levin on 7/17/15.
+//
+//
+
+#ifndef hifi_hitEffect_h
+#define hifi_hitEffect_h
+
+#include <DependencyManager.h>
+#include "render/DrawTask.h"
+
+class AbstractViewStateInterface;
+class ProgramObject;
+
+class HitEffect {
+public:
+    
+    HitEffect();
+    
+    void run(const render::SceneContextPointer& sceneContext, const render::RenderContextPointer& renderContext);
+    typedef render::Job::Model<HitEffect> JobModel;
+    
+    const gpu::PipelinePointer&     getHitEffectPipeline();
+    
+private:
+    
+    gpu::PipelinePointer _hitEffectPipeline;
+    GLuint _screenSizeLocation;
+};
+
+#endif

libraries/render-utils/src/RenderDeferredTask.cpp

@@ -16,6 +16,7 @@
 #include "ViewFrustum.h"
 #include "RenderArgs.h"
 #include "TextureCache.h"
+#include "HitEffect.h"
 
 #include "render/DrawStatus.h"
 
@@ -54,6 +55,7 @@ RenderDeferredTask::RenderDeferredTask() : Task() {
     _jobs.push_back(Job(new DepthSortItems::JobModel("DepthSortOpaque", _jobs.back().getOutput())));
     auto& renderedOpaques = _jobs.back().getOutput();
     _jobs.push_back(Job(new DrawOpaqueDeferred::JobModel("DrawOpaqueDeferred", _jobs.back().getOutput())));
+  
     _jobs.push_back(Job(new DrawLight::JobModel("DrawLight")));
     _jobs.push_back(Job(new ResetGLState::JobModel()));
     _jobs.push_back(Job(new RenderDeferred::JobModel("RenderDeferred")));
@@ -75,7 +77,9 @@ RenderDeferredTask::RenderDeferredTask() : Task() {
     _drawStatusJobIndex = _jobs.size() - 1;
 
     _jobs.push_back(Job(new DrawOverlay3D::JobModel("DrawOverlay3D")));
+    _jobs.push_back(Job(new HitEffect::JobModel("HitEffect")));
     _jobs.push_back(Job(new ResetGLState::JobModel()));
+    
 
     // Give ourselves 3 frmaes of timer queries
     _timerQueries.push_back(gpu::QueryPointer(new gpu::Query()));

libraries/render-utils/src/hit_effect.slf

@@ -0,0 +1,29 @@
+<@include gpu/Config.slh@>
+<$VERSION_HEADER$>
+//  Generated on <$_SCRIBE_DATE$>
+//
+//  ambient_occlusion.frag
+//  fragment shader
+//
+//  Created by Eric Levin on 7/20
+//  Copyright 2015 High Fidelity, Inc.
+//
+//  Distributed under the Apache License, Version 2.0.
+//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
+//
+<@include gpu/Transform.slh@>
+<$declareStandardTransform()$>
+<@include DeferredBufferWrite.slh@>
+
+void main(void) {
+
+  TransformCamera cam = getTransformCamera();
+  vec4 myViewport;
+  <$transformCameraViewport(cam, myViewport)$>
+  vec2 center = vec2(myViewport.z/2.0, myViewport.w/2.0);
+  float distFromCenter = distance(center, gl_FragCoord.xy);
+  //normalize
+  distFromCenter = distFromCenter/myViewport.z;
+  float alpha = mix(0.0, 1.0, distFromCenter);
+  gl_FragColor = vec4(0.7, 0.0, 0.0, alpha);
+}

libraries/render-utils/src/hit_effect.slv

@@ -0,0 +1,21 @@
+<@include gpu/Config.slh@>
+<$VERSION_HEADER$>
+//  Generated on <$_SCRIBE_DATE$>
+//
+//  ambient_occlusion.vert
+//  vertex shader
+//
+//  Created by Niraj Venkat on 7/20/15.
+//  Copyright 2015 High Fidelity, Inc.
+//
+//  Distributed under the Apache License, Version 2.0.
+//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
+//
+
+<@include gpu/Transform.slh@>
+
+<$declareStandardTransform()$>
+
+void main(void) {
+  gl_Position = gl_Vertex;
+}