From: vortex <vortex@d7cf8633-e32d-0410-b094-e92efae38249>
Date: Tue, 22 Mar 2011 15:15:59 +0000 (+0000)
Subject: GLSL shader: make dp_waterscroll work with dp_reflect and dp_refract
X-Git-Tag: xonotic-v0.6.0~163^2~588
X-Git-Url: https://git.rm.cloudns.org/?a=commitdiff_plain;h=dbd8e60c7e473f960271f3f52d66382e205001db;p=xonotic%2Fdarkplaces.git

GLSL shader: make dp_waterscroll work with dp_reflect and dp_refract

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@10958 d7cf8633-e32d-0410-b094-e92efae38249
---

diff --git a/gl_rmain.c b/gl_rmain.c
index 5ea6bb04..f60e7e2b 100644
--- a/gl_rmain.c
+++ b/gl_rmain.c
@@ -2072,14 +2072,14 @@ void R_SetupShader_Surface(const vec3_t lightcolorbase, qboolean modellighting,
 	r_waterstate_waterplane_t *waterplane = (r_waterstate_waterplane_t *)surfacewaterplane;
 	if (rsurface.texture->currentmaterialflags & MATERIALFLAG_ALPHATEST)
 		permutation |= SHADERPERMUTATION_ALPHAKILL;
+	if (rsurface.texture->r_water_waterscroll[0] && rsurface.texture->r_water_waterscroll[1])
+		permutation |= SHADERPERMUTATION_NORMALMAPSCROLLBLEND; // todo: make generic
 	if (rsurfacepass == RSURFPASS_BACKGROUND)
 	{
 		// distorted background
 		if (rsurface.texture->currentmaterialflags & MATERIALFLAG_WATERSHADER)
 		{
 			mode = SHADERMODE_WATER;
-			if (rsurface.texture->r_water_waterscroll[0] && rsurface.texture->r_water_waterscroll[1])
-				permutation |= SHADERPERMUTATION_NORMALMAPSCROLLBLEND;
 			if((r_wateralpha.value < 1) && (rsurface.texture->currentmaterialflags & MATERIALFLAG_WATERALPHA))
 			{
 				// this is the right thing to do for wateralpha
diff --git a/shader_glsl.h b/shader_glsl.h
index 0d4d3b5f..1b0c1b18 100644
--- a/shader_glsl.h
+++ b/shader_glsl.h
@@ -355,13 +355,23 @@
 "uniform mediump vec4 ReflectColor;\n"
 "uniform mediump float ReflectFactor;\n"
 "uniform mediump float ReflectOffset;\n"
+"uniform highp float ClientTime;\n"
+"#ifdef USENORMALMAPSCROLLBLEND\n"
+"uniform highp vec2 NormalmapScrollBlend;\n"
+"#endif\n"
 "\n"
 "void main(void)\n"
 "{\n"
 "	vec2 ScreenScaleRefractReflectIW = ScreenScaleRefractReflect.xy * (1.0 / ModelViewProjectionPosition.w);\n"
 "	//vec2 ScreenTexCoord = (ModelViewProjectionPosition.xy + normalize(vec3(dp_texture2D(Texture_Normal, TexCoord)) - vec3(0.5)).xy * DistortScaleRefractReflect.xy * 100) * ScreenScaleRefractReflectIW + ScreenCenterRefractReflect.xy;\n"
 "	vec2 SafeScreenTexCoord = ModelViewProjectionPosition.xy * ScreenScaleRefractReflectIW + ScreenCenterRefractReflect.xy;\n"
-"	vec2 ScreenTexCoord = SafeScreenTexCoord + vec2(normalize(vec3(dp_texture2D(Texture_Normal, TexCoord)) - vec3(0.5))).xy * DistortScaleRefractReflect.xy;\n"
+"	#ifdef USENORMALMAPSCROLLBLEND\n"
+"		vec3 normal = dp_texture2D(Texture_Normal, (TexCoord + vec2(0.08, 0.08)*ClientTime*NormalmapScrollBlend.x*0.5)*NormalmapScrollBlend.y).rgb - vec3(1.0);\n"
+"		normal += dp_texture2D(Texture_Normal, (TexCoord + vec2(-0.06, -0.09)*ClientTime*NormalmapScrollBlend.x)*NormalmapScrollBlend.y*0.75).rgb;\n"
+"		vec2 ScreenTexCoord = SafeScreenTexCoord + vec3(normalize(myhalf3(normal))).xy * DistortScaleRefractReflect.zw;\n"
+"	#else\n"
+"		vec2 ScreenTexCoord = SafeScreenTexCoord + vec3(normalize(myhalf3(offsetMappedTexture2D(Texture_Normal)) - myhalf3(0.5))).xy * DistortScaleRefractReflect.zw;\n"
+"	#endif\n"
 "	// FIXME temporary hack to detect the case that the reflection\n"
 "	// gets blackened at edges due to leaving the area that contains actual\n"
 "	// content.\n"
@@ -1064,6 +1074,10 @@
 "uniform sampler3D Texture_BounceGrid;\n"
 "uniform float BounceGridIntensity;\n"
 "#endif\n"
+"uniform highp float ClientTime;\n"
+"#ifdef USENORMALMAPSCROLLBLEND\n"
+"uniform highp vec2 NormalmapScrollBlend;\n"
+"#endif\n"
 "void main(void)\n"
 "{\n"
 "#ifdef USEOFFSETMAPPING\n"
@@ -1072,8 +1086,10 @@
 "	vec2 dPdy = dp_offsetmapping_dFdy(TexCoordSurfaceLightmap.xy);\n"
 "	vec2 TexCoordOffset = OffsetMapping(TexCoordSurfaceLightmap.xy, dPdx, dPdy);\n"
 "# define offsetMappedTexture2D(t) dp_textureGrad(t, TexCoordOffset, dPdx, dPdy)\n"
+"# define TexCoord TexCoordOffset\n"
 "#else\n"
 "# define offsetMappedTexture2D(t) dp_texture2D(t, TexCoordSurfaceLightmap.xy)\n"
+"# define TexCoord TexCoordSurfaceLightmap.xy\n"
 "#endif\n"
 "\n"
 "	// combine the diffuse textures (base, pants, shirt)\n"
@@ -1281,7 +1297,13 @@
 "	vec4 ScreenScaleRefractReflectIW = ScreenScaleRefractReflect * (1.0 / ModelViewProjectionPosition.w);\n"
 "	//vec4 ScreenTexCoord = (ModelViewProjectionPosition.xyxy + normalize(myhalf3(offsetMappedTexture2D(Texture_Normal)) - myhalf3(0.5)).xyxy * DistortScaleRefractReflect * 100) * ScreenScaleRefractReflectIW + ScreenCenterRefractReflect;\n"
 "	vec2 SafeScreenTexCoord = ModelViewProjectionPosition.xy * ScreenScaleRefractReflectIW.zw + ScreenCenterRefractReflect.zw;\n"
-"	vec2 ScreenTexCoord = SafeScreenTexCoord + vec3(normalize(myhalf3(offsetMappedTexture2D(Texture_Normal)) - myhalf3(0.5))).xy * DistortScaleRefractReflect.zw;\n"
+"	#ifdef USENORMALMAPSCROLLBLEND\n"
+"		vec3 normal = dp_texture2D(Texture_Normal, (TexCoord + vec2(0.08, 0.08)*ClientTime*NormalmapScrollBlend.x*0.5)*NormalmapScrollBlend.y).rgb - vec3(1.0);\n"
+"		normal += dp_texture2D(Texture_Normal, (TexCoord + vec2(-0.06, -0.09)*ClientTime*NormalmapScrollBlend.x)*NormalmapScrollBlend.y*0.75).rgb;\n"
+"		vec2 ScreenTexCoord = SafeScreenTexCoord + vec3(normalize(myhalf3(normal))).xy * DistortScaleRefractReflect.zw;\n"
+"	#else\n"
+"		vec2 ScreenTexCoord = SafeScreenTexCoord + vec3(normalize(myhalf3(offsetMappedTexture2D(Texture_Normal)) - myhalf3(0.5))).xy * DistortScaleRefractReflect.zw;\n"
+"	#endif\n"
 "	// FIXME temporary hack to detect the case that the reflection\n"
 "	// gets blackened at edges due to leaving the area that contains actual\n"
 "	// content.\n"