From 95f2dfa551ae0177f8b99741949ed39a9f867d61 Mon Sep 17 00:00:00 2001
From: Anna <anna@highfidelity.io>
Date: Mon, 1 Jul 2019 15:31:26 -0700
Subject: [PATCH] added horizontal flip back to mirror mode

---
 libraries/gpu/src/gpu/DrawTextureMirroredX.slf |  2 +-
 libraries/render/src/render/ResampleTask.cpp   | 11 ++++++++---
 libraries/render/src/render/ResampleTask.h     |  1 +
 3 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/libraries/gpu/src/gpu/DrawTextureMirroredX.slf b/libraries/gpu/src/gpu/DrawTextureMirroredX.slf
index acb93fa5ca..f959d8480b 100644
--- a/libraries/gpu/src/gpu/DrawTextureMirroredX.slf
+++ b/libraries/gpu/src/gpu/DrawTextureMirroredX.slf
@@ -2,7 +2,7 @@
 <$VERSION_HEADER$>
 //  Generated on <$_SCRIBE_DATE$>
 //
-//  DrawTextureSRGBToLinearMirroredX.frag
+//  DrawTextureMirroredX.frag
 //
 //  Draw texture 0 fetched at (1.0 - texcoord.x, texcoord.y)
 //
diff --git a/libraries/render/src/render/ResampleTask.cpp b/libraries/render/src/render/ResampleTask.cpp
index 3e9bfec8da..1a7a075af6 100644
--- a/libraries/render/src/render/ResampleTask.cpp
+++ b/libraries/render/src/render/ResampleTask.cpp
@@ -16,6 +16,7 @@
 #include <shaders/Shaders.h>
 
 using namespace render;
+using namespace shader::gpu::program;
 
 gpu::PipelinePointer HalfDownsample::_pipeline;
 
@@ -137,6 +138,7 @@ void Upsample::run(const RenderContextPointer& renderContext, const gpu::Framebu
 }
 
 gpu::PipelinePointer UpsampleToBlitFramebuffer::_pipeline;
+gpu::PipelinePointer UpsampleToBlitFramebuffer::_mirrorPipeline;
 
 void UpsampleToBlitFramebuffer::run(const RenderContextPointer& renderContext, const Input& input, gpu::FramebufferPointer& resampledFrameBuffer) {
     assert(renderContext->args);
@@ -148,14 +150,17 @@ void UpsampleToBlitFramebuffer::run(const RenderContextPointer& renderContext, c
 
     if (resampledFrameBuffer != sourceFramebuffer) {
         if (!_pipeline) {
-            gpu::ShaderPointer program = gpu::Shader::createProgram(shader::gpu::program::drawTransformUnitQuadTextureOpaque);
             gpu::StatePointer state = gpu::StatePointer(new gpu::State());
             state->setDepthTest(gpu::State::DepthTest(false, false));
-            _pipeline = gpu::Pipeline::create(program, state);
+
+            _pipeline = gpu::Pipeline::create(gpu::Shader::createProgram(drawTransformUnitQuadTextureOpaque), state);
+            _mirrorPipeline = gpu::Pipeline::create(gpu::Shader::createProgram(DrawTextureMirroredX), state);
         }
         const auto bufferSize = resampledFrameBuffer->getSize();
         glm::ivec4 viewport{ 0, 0, bufferSize.x, bufferSize.y };
 
+        gpu::PipelinePointer pipeline = args->_renderMode == RenderArgs::MIRROR_RENDER_MODE ? _mirrorPipeline : _pipeline;
+
         gpu::doInBatch("Upsample::run", args->_context, [&](gpu::Batch& batch) {
             batch.enableStereo(false);
 
@@ -164,7 +169,7 @@ void UpsampleToBlitFramebuffer::run(const RenderContextPointer& renderContext, c
             batch.setViewportTransform(viewport);
             batch.setProjectionTransform(glm::mat4());
             batch.resetViewTransform();
-            batch.setPipeline(_pipeline);
+            batch.setPipeline(pipeline);
 
             batch.setModelTransform(gpu::Framebuffer::evalSubregionTexcoordTransform(bufferSize, viewport));
             batch.setResourceTexture(0, sourceFramebuffer->getRenderBuffer(0));
diff --git a/libraries/render/src/render/ResampleTask.h b/libraries/render/src/render/ResampleTask.h
index e62b76e6d0..92f720c843 100644
--- a/libraries/render/src/render/ResampleTask.h
+++ b/libraries/render/src/render/ResampleTask.h
@@ -80,6 +80,7 @@ namespace render {
     protected:
 
         static gpu::PipelinePointer _pipeline;
+        static gpu::PipelinePointer _mirrorPipeline;
     };
 }