HDRI Local Preview (#953)

* #926 WIP - HDRI import prototype v0

* #926 WIP -- add OpenEXR to autobuild.xml

* #926 WIP -- Add OpenEXR cmake

* #926 WIP -- Attempt at using OpenEXR autobuild package and don't hard code .exr file to load

* #926 Unmangle autobuild.xml and get dll's in the right place (thanks, Caladbolg!)

* implement mac shared libs plumbing for OpenEXR for secondlife/viewer#926

* Fix Xcode/clang compile error regarding new[]/delete[] mismatch

* #926 HDRI Preview finishing touches.

- Full ACES when HDRI is enabled
- Fix for probes getting stuck paused
- Add exposure and rotation controls

---------

Co-authored-by: Brad Linden <brad@lindenlab.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/indra/newview/pipeline.cpp b/indra/newview/pipeline.cpp
index 94ec5c0817..7809129743 100644
--- a/indra/newview/pipeline.cpp
+++ b/indra/newview/pipeline.cpp
@@ -6869,6 +6869,8 @@ void LLPipeline::generateExposure(LLRenderTarget* src, LLRenderTarget* dst, bool
 	}
 }
 
+extern LLPointer<LLImageGL> gEXRImage;
+
 void LLPipeline::gammaCorrect(LLRenderTarget* src, LLRenderTarget* dst) {
 	dst->bindTarget();
 	// gamma correct lighting
@@ -6905,8 +6907,10 @@ void LLPipeline::gammaCorrect(LLRenderTarget* src, LLRenderTarget* dst) {
 		F32 e = llclamp(exposure(), 0.5f, 4.f);
 
 		static LLStaticHashedString s_exposure("exposure");
+        static LLStaticHashedString aces_mix("aces_mix");
 
         shader.uniform1f(s_exposure, e);
+        shader.uniform1f(aces_mix, gEXRImage.notNull() ? 0.f : 0.3f);
 
 		mScreenTriangleVB->setBuffer();
 		mScreenTriangleVB->drawArrays(LLRender::TRIANGLES, 0, 3);