From dac1290597eb1af50854314ac7b8a8abe34a5b11 Mon Sep 17 00:00:00 2001
From: scrawl <scrawl@baseoftrash.de>
Date: Thu, 29 Jan 2015 22:59:38 +0100
Subject: [PATCH] Reduce size of water plane and increase subdivisions (Fixes
 #969)

---
 apps/openmw/mwrender/renderingmanager.cpp |  1 +
 apps/openmw/mwrender/water.cpp            | 10 +++-------
 files/materials/water.shader              | 11 ++++++-----
 3 files changed, 10 insertions(+), 12 deletions(-)

diff --git a/apps/openmw/mwrender/renderingmanager.cpp b/apps/openmw/mwrender/renderingmanager.cpp
index 149080d93..3ffd787c7 100644
--- a/apps/openmw/mwrender/renderingmanager.cpp
+++ b/apps/openmw/mwrender/renderingmanager.cpp
@@ -409,6 +409,7 @@ void RenderingManager::update (float duration, bool paused)
 
     mSkyManager->setGlare(mOcclusionQuery->getSunVisibility());
 
+    mWater->changeCell(player.getCell()->getCell());
 
     mWater->updateUnderwater(world->isUnderwater(player.getCell(), cam));
 
diff --git a/apps/openmw/mwrender/water.cpp b/apps/openmw/mwrender/water.cpp
index fd790b363..9960b7b21 100644
--- a/apps/openmw/mwrender/water.cpp
+++ b/apps/openmw/mwrender/water.cpp
@@ -210,10 +210,10 @@ Water::Water (Ogre::Camera *camera, RenderingManager* rend) :
 
     mWaterPlane = Plane(Vector3::UNIT_Z, 0);
 
-    int waterScale = 300;
+    int waterScale = 30;
 
     MeshManager::getSingleton().createPlane("water", ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME, mWaterPlane,
-        CELL_SIZE*5*waterScale, CELL_SIZE*5*waterScale, 10, 10, true, 1, 3*waterScale,3*waterScale, Vector3::UNIT_Y);
+        CELL_SIZE*5*waterScale, CELL_SIZE*5*waterScale, 40, 40, true, 1, 3*waterScale,3*waterScale, Vector3::UNIT_Y);
 
     mWater = mSceneMgr->createEntity("water");
     mWater->setVisibilityFlags(RV_Water);
@@ -305,11 +305,7 @@ Water::~Water()
 
 void Water::changeCell(const ESM::Cell* cell)
 {
-    mTop = cell->mWater;
-
-    setHeight(mTop);
-
-    if(!(cell->mData.mFlags & cell->Interior))
+    if(cell->isExterior())
         mWaterNode->setPosition(getSceneNodeCoordinates(cell->mData.mX, cell->mData.mY));
 }
 
diff --git a/files/materials/water.shader b/files/materials/water.shader
index a6f49e0a1..4dec57276 100644
--- a/files/materials/water.shader
+++ b/files/materials/water.shader
@@ -71,8 +71,6 @@
 
     SH_BEGIN_PROGRAM
         shUniform(float4x4, wvp)                @shAutoConstant(wvp, worldviewproj_matrix)
-        shVertexInput(float2, uv0)
-        shOutput(float2, UV)
         
         shOutput(float3, screenCoordsPassthrough)
         shOutput(float4, position)
@@ -98,7 +96,6 @@
     SH_START_PROGRAM
     {
 	    shOutputPosition = shMatrixMult(wvp, shInputPosition);
-	    UV = uv0;
 	   
 	   
 	    #if !SH_GLSL
@@ -187,7 +184,6 @@
     }
 
     SH_BEGIN_PROGRAM
-		shInput(float2, UV)
 		shInput(float3, screenCoordsPassthrough)
 		shInput(float4, position)
 		shInput(float, depthPassthrough)
@@ -206,9 +202,10 @@
 		shSampler2D(depthMap)
 		shSampler2D(normalMap)
 
+    shUniform(float4x4, wMat) @shAutoConstant(wMat, world_matrix)
+
             #if RIPPLES
                 shSampler2D(rippleNormalMap)
-                shUniform(float4x4, wMat) @shAutoConstant(wMat, world_matrix)
             #endif
 		
 		shUniform(float3, windDir_windSpeed) @shSharedParameter(windDir_windSpeed)
@@ -251,6 +248,10 @@
 
     SH_START_PROGRAM
     {
+            float3 worldPos = shMatrixMult (wMat, position).xyz;
+            float2 UV = worldPos.xy / (8192.0*5.0) * 3.0;
+            UV.y *= -1.0;
+
 #if SHADOWS
             float shadow = depthShadowPCF (shadowMap0, lightSpacePos0, invShadowmapSize0);
 #endif