1 files changed, 48 insertions, 7 deletions

diff --git a/indra/newview/lldrawpoolwlsky.cpp b/indra/newview/lldrawpoolwlsky.cpp
index 4580744a1f..12c76e301d 100644
--- a/indra/newview/lldrawpoolwlsky.cpp
+++ b/indra/newview/lldrawpoolwlsky.cpp
@@ -44,6 +44,7 @@
 #include "llsky.h"
 #include "llvowlsky.h"
 #include "llsettingsvo.h"
+#include "llviewercontrol.h"
 
 extern bool gCubeSnapshot;
 
@@ -127,6 +128,19 @@ void LLDrawPoolWLSky::renderDome(const LLVector3& camPosLocal, F32 camHeightLoca
 	gGL.popMatrix();
 }
 
+extern LLPointer<LLImageGL> gEXRImage;
+
+static bool use_hdri_sky()
+{
+    static LLCachedControl<F32> hdri_split(gSavedSettings, "RenderHDRISplitScreen", 1.f);
+    static LLCachedControl<bool> irradiance_only(gSavedSettings, "RenderHDRIIrradianceOnly", false);
+
+    return gCubeSnapshot && (!irradiance_only || !gPipeline.mReflectionMapManager.isRadiancePass()) ? gEXRImage.notNull() : // always use HDRI for reflection probes when available
+        gEXRImage.notNull() ? hdri_split > 0.f : // fallback to EEP sky when split screen is zero
+        false; // no HDRI available, always use EEP sky
+
+}
+
 void LLDrawPoolWLSky::renderSkyHazeDeferred(const LLVector3& camPosLocal, F32 camHeightLocal) const
 {
     if (!gSky.mVOSkyp)
@@ -138,9 +152,34 @@ void LLDrawPoolWLSky::renderSkyHazeDeferred(const LLVector3& camPosLocal, F32 ca
 
 	if (gPipeline.canUseWindLightShaders() && gPipeline.hasRenderType(LLPipeline::RENDER_TYPE_SKY))
 	{
-        LLGLSPipelineDepthTestSkyBox sky(true, true);
+        if (use_hdri_sky())
+        {
+            sky_shader = &gEnvironmentMapProgram;
+            sky_shader->bind();
+            S32 idx = sky_shader->enableTexture(LLShaderMgr::ENVIRONMENT_MAP);
+            if (idx > -1)
+            {
+                gGL.getTexUnit(idx)->bind(gEXRImage);
+            }
+
+            static LLCachedControl<F32> hdri_exposure(gSavedSettings, "RenderHDRIExposure", 0.0f);
+            static LLCachedControl<F32> hdri_rotation(gSavedSettings, "RenderHDRIRotation", 0.f);
+            static LLCachedControl<F32> hdri_split(gSavedSettings, "RenderHDRISplitScreen", 1.f);
+            static LLStaticHashedString hdri_split_screen("hdri_split_screen");
 
-        sky_shader->bind();
+            LLMatrix3 rot;
+            rot.setRot(0.f, hdri_rotation*DEG_TO_RAD, 0.f);
+
+            sky_shader->uniform1f(LLShaderMgr::SKY_HDR_SCALE, powf(2.f, hdri_exposure));
+            sky_shader->uniformMatrix3fv(LLShaderMgr::DEFERRED_ENV_MAT, 1, GL_FALSE, (F32*) rot.mMatrix);
+            sky_shader->uniform1f(hdri_split_screen, gCubeSnapshot ? 1.f : hdri_split);
+        }
+        else
+        {
+            sky_shader->bind();
+        }
+
+        LLGLSPipelineDepthTestSkyBox sky(true, true);
 
         sky_shader->uniform1i(LLShaderMgr::CUBE_SNAPSHOT, gCubeSnapshot ? 1 : 0);
 
@@ -180,7 +219,7 @@ void LLDrawPoolWLSky::renderSkyHazeDeferred(const LLVector3& camPosLocal, F32 ca
 
 void LLDrawPoolWLSky::renderStarsDeferred(const LLVector3& camPosLocal) const
 {
-    if (!gSky.mVOSkyp)
+    if (!gSky.mVOSkyp || use_hdri_sky())
     {
         return;
     }
@@ -251,6 +290,11 @@ void LLDrawPoolWLSky::renderStarsDeferred(const LLVector3& camPosLocal) const
 
 void LLDrawPoolWLSky::renderSkyCloudsDeferred(const LLVector3& camPosLocal, F32 camHeightLocal, LLGLSLShader* cloudshader) const
 {
+    if (use_hdri_sky())
+    {
+        return;
+    }
+
 	if (gPipeline.canUseWindLightShaders() && gPipeline.hasRenderType(LLPipeline::RENDER_TYPE_CLOUDS) && gSky.mVOSkyp && gSky.mVOSkyp->getCloudNoiseTex())
 	{
         LLSettingsSky::ptr_t psky = LLEnvironment::instance().getCurrentSky();
@@ -310,7 +354,7 @@ void LLDrawPoolWLSky::renderSkyCloudsDeferred(const LLVector3& camPosLocal, F32
 
 void LLDrawPoolWLSky::renderHeavenlyBodies()
 {
-    if (!gSky.mVOSkyp) return;
+    if (!gSky.mVOSkyp || use_hdri_sky()) return;
 
     LLGLSPipelineBlendSkyBox gls_skybox(true, true); // SL-14113 we need moon to write to depth to clip stars behind
 
@@ -438,8 +482,6 @@ void LLDrawPoolWLSky::renderDeferred(S32 pass)
 
     const F32 camHeightLocal = LLEnvironment::instance().getCamHeight();
 
-	gGL.setColorMask(true, false);
-
     LLVector3 const & origin = LLViewerCamera::getInstance()->getOrigin();
 
     if (gPipeline.canUseWindLightShaders())
@@ -456,7 +498,6 @@ void LLDrawPoolWLSky::renderDeferred(S32 pass)
             renderSkyCloudsDeferred(origin, camHeightLocal, cloud_shader);
         }
     }
-    gGL.setColorMask(true, true);
 }